Java example source code file (JTable.java)
The JTable.java Java example source code/*
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
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* published by the Free Software Foundation. Oracle designates this
* particular file as subject to the "Classpath" exception as provided
* by Oracle in the LICENSE file that accompanied this code.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
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package javax.swing;
import java.util.*;
import java.applet.Applet;
import java.awt.*;
import java.awt.event.*;
import java.awt.print.*;
import java.beans.*;
import java.io.Serializable;
import java.io.ObjectOutputStream;
import java.io.ObjectInputStream;
import java.io.IOException;
import javax.accessibility.*;
import javax.swing.event.*;
import javax.swing.plaf.*;
import javax.swing.table.*;
import javax.swing.border.*;
import java.text.NumberFormat;
import java.text.DateFormat;
import java.text.MessageFormat;
import javax.print.attribute.*;
import javax.print.PrintService;
import sun.reflect.misc.ReflectUtil;
import sun.swing.SwingUtilities2;
import sun.swing.SwingUtilities2.Section;
import static sun.swing.SwingUtilities2.Section.*;
import sun.swing.PrintingStatus;
import sun.swing.SwingLazyValue;
/**
* The <code>JTable is used to display and edit regular two-dimensional tables
* of cells.
* See <a href="http://docs.oracle.com/javase/tutorial/uiswing/components/table.html">How to Use Tables
* in <em>The Java Tutorial
* for task-oriented documentation and examples of using <code>JTable.
*
* <p>
* The <code>JTable has many
* facilities that make it possible to customize its rendering and editing
* but provides defaults for these features so that simple tables can be
* set up easily. For example, to set up a table with 10 rows and 10
* columns of numbers:
*
* <pre>
* TableModel dataModel = new AbstractTableModel() {
* public int getColumnCount() { return 10; }
* public int getRowCount() { return 10;}
* public Object getValueAt(int row, int col) { return new Integer(row*col); }
* };
* JTable table = new JTable(dataModel);
* JScrollPane scrollpane = new JScrollPane(table);
* </pre>
* <p>
* {@code JTable}s are typically placed inside of a {@code JScrollPane}. By
* default, a {@code JTable} will adjust its width such that
* a horizontal scrollbar is unnecessary. To allow for a horizontal scrollbar,
* invoke {@link #setAutoResizeMode} with {@code AUTO_RESIZE_OFF}.
* Note that if you wish to use a <code>JTable in a standalone
* view (outside of a <code>JScrollPane) and want the header
* displayed, you can get it using {@link #getTableHeader} and
* display it separately.
* <p>
* To enable sorting and filtering of rows, use a
* {@code RowSorter}.
* You can set up a row sorter in either of two ways:
* <ul>
* <li>Directly set the {@code RowSorter}. For example:
* {@code table.setRowSorter(new TableRowSorter(model))}.
* <li>Set the {@code autoCreateRowSorter}
* property to {@code true}, so that the {@code JTable}
* creates a {@code RowSorter} for
* you. For example: {@code setAutoCreateRowSorter(true)}.
* </ul>
* <p>
* When designing applications that use the <code>JTable it is worth paying
* close attention to the data structures that will represent the table's data.
* The <code>DefaultTableModel is a model implementation that
* uses a <code>Vector of
* <p>
* @param rowData the data for the new table
* @param columnNames names of each column
*/
public JTable(Vector rowData, Vector columnNames) {
this(new DefaultTableModel(rowData, columnNames));
}
/**
* Constructs a <code>JTable to display the values in the two dimensional array,
* <code>rowData, with column names, columnNames.
* <code>rowData is an array of rows, so the value of the cell at row 1,
* column 5 can be obtained with the following code:
*
* <pre> rowData[1][5];
* <p>
* All rows must be of the same length as <code>columnNames.
* <p>
* @param rowData the data for the new table
* @param columnNames names of each column
*/
public JTable(final Object[][] rowData, final Object[] columnNames) {
this(new AbstractTableModel() {
public String getColumnName(int column) { return columnNames[column].toString(); }
public int getRowCount() { return rowData.length; }
public int getColumnCount() { return columnNames.length; }
public Object getValueAt(int row, int col) { return rowData[row][col]; }
public boolean isCellEditable(int row, int column) { return true; }
public void setValueAt(Object value, int row, int col) {
rowData[row][col] = value;
fireTableCellUpdated(row, col);
}
});
}
/**
* Calls the <code>configureEnclosingScrollPane method.
*
* @see #configureEnclosingScrollPane
*/
public void addNotify() {
super.addNotify();
configureEnclosingScrollPane();
}
/**
* If this <code>JTable is the viewportView of an enclosing JScrollPane
* (the usual situation), configure this <code>ScrollPane by, amongst other things,
* installing the table's <code>tableHeader as the columnHeaderView of the scroll pane.
* When a <code>JTable is added to a JScrollPane in the usual way,
* using <code>new JScrollPane(myTable), addNotify is
* called in the <code>JTable (when the table is added to the viewport).
* <code>JTable's addNotify method in turn calls this method,
* which is protected so that this default installation procedure can
* be overridden by a subclass.
*
* @see #addNotify
*/
protected void configureEnclosingScrollPane() {
Container parent = SwingUtilities.getUnwrappedParent(this);
if (parent instanceof JViewport) {
JViewport port = (JViewport) parent;
Container gp = port.getParent();
if (gp instanceof JScrollPane) {
JScrollPane scrollPane = (JScrollPane)gp;
// Make certain we are the viewPort's view and not, for
// example, the rowHeaderView of the scrollPane -
// an implementor of fixed columns might do this.
JViewport viewport = scrollPane.getViewport();
if (viewport == null ||
SwingUtilities.getUnwrappedView(viewport) != this) {
return;
}
scrollPane.setColumnHeaderView(getTableHeader());
// configure the scrollpane for any LAF dependent settings
configureEnclosingScrollPaneUI();
}
}
}
/**
* This is a sub-part of configureEnclosingScrollPane() that configures
* anything on the scrollpane that may change when the look and feel
* changes. It needed to be split out from configureEnclosingScrollPane() so
* that it can be called from updateUI() when the LAF changes without
* causing the regression found in bug 6687962. This was because updateUI()
* is called from the constructor which then caused
* configureEnclosingScrollPane() to be called by the constructor which
* changes its contract for any subclass that overrides it. So by splitting
* it out in this way configureEnclosingScrollPaneUI() can be called both
* from configureEnclosingScrollPane() and updateUI() in a safe manor.
*/
private void configureEnclosingScrollPaneUI() {
Container parent = SwingUtilities.getUnwrappedParent(this);
if (parent instanceof JViewport) {
JViewport port = (JViewport) parent;
Container gp = port.getParent();
if (gp instanceof JScrollPane) {
JScrollPane scrollPane = (JScrollPane)gp;
// Make certain we are the viewPort's view and not, for
// example, the rowHeaderView of the scrollPane -
// an implementor of fixed columns might do this.
JViewport viewport = scrollPane.getViewport();
if (viewport == null ||
SwingUtilities.getUnwrappedView(viewport) != this) {
return;
}
// scrollPane.getViewport().setBackingStoreEnabled(true);
Border border = scrollPane.getBorder();
if (border == null || border instanceof UIResource) {
Border scrollPaneBorder =
UIManager.getBorder("Table.scrollPaneBorder");
if (scrollPaneBorder != null) {
scrollPane.setBorder(scrollPaneBorder);
}
}
// add JScrollBar corner component if available from LAF and not already set by the user
Component corner =
scrollPane.getCorner(JScrollPane.UPPER_TRAILING_CORNER);
if (corner == null || corner instanceof UIResource){
corner = null;
try {
corner = (Component) UIManager.get(
"Table.scrollPaneCornerComponent");
} catch (Exception e) {
// just ignore and don't set corner
}
scrollPane.setCorner(JScrollPane.UPPER_TRAILING_CORNER,
corner);
}
}
}
}
/**
* Calls the <code>unconfigureEnclosingScrollPane method.
*
* @see #unconfigureEnclosingScrollPane
*/
public void removeNotify() {
KeyboardFocusManager.getCurrentKeyboardFocusManager().
removePropertyChangeListener("permanentFocusOwner", editorRemover);
editorRemover = null;
unconfigureEnclosingScrollPane();
super.removeNotify();
}
/**
* Reverses the effect of <code>configureEnclosingScrollPane
* by replacing the <code>columnHeaderView of the enclosing
* scroll pane with <code>null. JTable's
* <code>removeNotify method calls
* this method, which is protected so that this default uninstallation
* procedure can be overridden by a subclass.
*
* @see #removeNotify
* @see #configureEnclosingScrollPane
* @since 1.3
*/
protected void unconfigureEnclosingScrollPane() {
Container parent = SwingUtilities.getUnwrappedParent(this);
if (parent instanceof JViewport) {
JViewport port = (JViewport) parent;
Container gp = port.getParent();
if (gp instanceof JScrollPane) {
JScrollPane scrollPane = (JScrollPane)gp;
// Make certain we are the viewPort's view and not, for
// example, the rowHeaderView of the scrollPane -
// an implementor of fixed columns might do this.
JViewport viewport = scrollPane.getViewport();
if (viewport == null ||
SwingUtilities.getUnwrappedView(viewport) != this) {
return;
}
scrollPane.setColumnHeaderView(null);
// remove ScrollPane corner if one was added by the LAF
Component corner =
scrollPane.getCorner(JScrollPane.UPPER_TRAILING_CORNER);
if (corner instanceof UIResource){
scrollPane.setCorner(JScrollPane.UPPER_TRAILING_CORNER,
null);
}
}
}
}
void setUIProperty(String propertyName, Object value) {
if (propertyName == "rowHeight") {
if (!isRowHeightSet) {
setRowHeight(((Number)value).intValue());
isRowHeightSet = false;
}
return;
}
super.setUIProperty(propertyName, value);
}
//
// Static Methods
//
/**
* Equivalent to <code>new JScrollPane(aTable).
*
* @deprecated As of Swing version 1.0.2,
* replaced by <code>new JScrollPane(aTable).
*/
@Deprecated
static public JScrollPane createScrollPaneForTable(JTable aTable) {
return new JScrollPane(aTable);
}
//
// Table Attributes
//
/**
* Sets the <code>tableHeader working with this JTable to newHeader.
* It is legal to have a <code>null tableHeader.
*
* @param tableHeader new tableHeader
* @see #getTableHeader
* @beaninfo
* bound: true
* description: The JTableHeader instance which renders the column headers.
*/
public void setTableHeader(JTableHeader tableHeader) {
if (this.tableHeader != tableHeader) {
JTableHeader old = this.tableHeader;
// Release the old header
if (old != null) {
old.setTable(null);
}
this.tableHeader = tableHeader;
if (tableHeader != null) {
tableHeader.setTable(this);
}
firePropertyChange("tableHeader", old, tableHeader);
}
}
/**
* Returns the <code>tableHeader used by this JTable.
*
* @return the <code>tableHeader used by this table
* @see #setTableHeader
*/
public JTableHeader getTableHeader() {
return tableHeader;
}
/**
* Sets the height, in pixels, of all cells to <code>rowHeight,
* revalidates, and repaints.
* The height of the cells will be equal to the row height minus
* the row margin.
*
* @param rowHeight new row height
* @exception IllegalArgumentException if <code>rowHeight is
* less than 1
* @see #getRowHeight
* @beaninfo
* bound: true
* description: The height of the specified row.
*/
public void setRowHeight(int rowHeight) {
if (rowHeight <= 0) {
throw new IllegalArgumentException("New row height less than 1");
}
int old = this.rowHeight;
this.rowHeight = rowHeight;
rowModel = null;
if (sortManager != null) {
sortManager.modelRowSizes = null;
}
isRowHeightSet = true;
resizeAndRepaint();
firePropertyChange("rowHeight", old, rowHeight);
}
/**
* Returns the height of a table row, in pixels.
*
* @return the height in pixels of a table row
* @see #setRowHeight
*/
public int getRowHeight() {
return rowHeight;
}
private SizeSequence getRowModel() {
if (rowModel == null) {
rowModel = new SizeSequence(getRowCount(), getRowHeight());
}
return rowModel;
}
/**
* Sets the height for <code>row to rowHeight,
* revalidates, and repaints. The height of the cells in this row
* will be equal to the row height minus the row margin.
*
* @param row the row whose height is being
changed
* @param rowHeight new row height, in pixels
* @exception IllegalArgumentException if <code>rowHeight is
* less than 1
* @beaninfo
* bound: true
* description: The height in pixels of the cells in <code>row
* @since 1.3
*/
public void setRowHeight(int row, int rowHeight) {
if (rowHeight <= 0) {
throw new IllegalArgumentException("New row height less than 1");
}
getRowModel().setSize(row, rowHeight);
if (sortManager != null) {
sortManager.setViewRowHeight(row, rowHeight);
}
resizeAndRepaint();
}
/**
* Returns the height, in pixels, of the cells in <code>row.
* @param row the row whose height is to be returned
* @return the height, in pixels, of the cells in the row
* @since 1.3
*/
public int getRowHeight(int row) {
return (rowModel == null) ? getRowHeight() : rowModel.getSize(row);
}
/**
* Sets the amount of empty space between cells in adjacent rows.
*
* @param rowMargin the number of pixels between cells in a row
* @see #getRowMargin
* @beaninfo
* bound: true
* description: The amount of space between cells.
*/
public void setRowMargin(int rowMargin) {
int old = this.rowMargin;
this.rowMargin = rowMargin;
resizeAndRepaint();
firePropertyChange("rowMargin", old, rowMargin);
}
/**
* Gets the amount of empty space, in pixels, between cells. Equivalent to:
* <code>getIntercellSpacing().height.
* @return the number of pixels between cells in a row
*
* @see #setRowMargin
*/
public int getRowMargin() {
return rowMargin;
}
/**
* Sets the <code>rowMargin and the columnMargin --
* the height and width of the space between cells -- to
* <code>intercellSpacing.
*
* @param intercellSpacing a <code>Dimension
* specifying the new width
* and height between cells
* @see #getIntercellSpacing
* @beaninfo
* description: The spacing between the cells,
* drawn in the background color of the JTable.
*/
public void setIntercellSpacing(Dimension intercellSpacing) {
// Set the rowMargin here and columnMargin in the TableColumnModel
setRowMargin(intercellSpacing.height);
getColumnModel().setColumnMargin(intercellSpacing.width);
resizeAndRepaint();
}
/**
* Returns the horizontal and vertical space between cells.
* The default spacing is look and feel dependent.
*
* @return the horizontal and vertical spacing between cells
* @see #setIntercellSpacing
*/
public Dimension getIntercellSpacing() {
return new Dimension(getColumnModel().getColumnMargin(), rowMargin);
}
/**
* Sets the color used to draw grid lines to <code>gridColor and redisplays.
* The default color is look and feel dependent.
*
* @param gridColor the new color of the grid lines
* @exception IllegalArgumentException if <code>gridColor is null
* @see #getGridColor
* @beaninfo
* bound: true
* description: The grid color.
*/
public void setGridColor(Color gridColor) {
if (gridColor == null) {
throw new IllegalArgumentException("New color is null");
}
Color old = this.gridColor;
this.gridColor = gridColor;
firePropertyChange("gridColor", old, gridColor);
// Redraw
repaint();
}
/**
* Returns the color used to draw grid lines.
* The default color is look and feel dependent.
*
* @return the color used to draw grid lines
* @see #setGridColor
*/
public Color getGridColor() {
return gridColor;
}
/**
* Sets whether the table draws grid lines around cells.
* If <code>showGrid is true it does; if it is false it doesn't.
* There is no <code>getShowGrid method as this state is held
* in two variables -- <code>showHorizontalLines and showVerticalLines --
* each of which can be queried independently.
*
* @param showGrid true if table view should draw grid lines
*
* @see #setShowVerticalLines
* @see #setShowHorizontalLines
* @beaninfo
* description: The color used to draw the grid lines.
*/
public void setShowGrid(boolean showGrid) {
setShowHorizontalLines(showGrid);
setShowVerticalLines(showGrid);
// Redraw
repaint();
}
/**
* Sets whether the table draws horizontal lines between cells.
* If <code>showHorizontalLines is true it does; if it is false it doesn't.
*
* @param showHorizontalLines true if table view should draw horizontal lines
* @see #getShowHorizontalLines
* @see #setShowGrid
* @see #setShowVerticalLines
* @beaninfo
* bound: true
* description: Whether horizontal lines should be drawn in between the cells.
*/
public void setShowHorizontalLines(boolean showHorizontalLines) {
boolean old = this.showHorizontalLines;
this.showHorizontalLines = showHorizontalLines;
firePropertyChange("showHorizontalLines", old, showHorizontalLines);
// Redraw
repaint();
}
/**
* Sets whether the table draws vertical lines between cells.
* If <code>showVerticalLines is true it does; if it is false it doesn't.
*
* @param showVerticalLines true if table view should draw vertical lines
* @see #getShowVerticalLines
* @see #setShowGrid
* @see #setShowHorizontalLines
* @beaninfo
* bound: true
* description: Whether vertical lines should be drawn in between the cells.
*/
public void setShowVerticalLines(boolean showVerticalLines) {
boolean old = this.showVerticalLines;
this.showVerticalLines = showVerticalLines;
firePropertyChange("showVerticalLines", old, showVerticalLines);
// Redraw
repaint();
}
/**
* Returns true if the table draws horizontal lines between cells, false if it
* doesn't. The default value is look and feel dependent.
*
* @return true if the table draws horizontal lines between cells, false if it
* doesn't
* @see #setShowHorizontalLines
*/
public boolean getShowHorizontalLines() {
return showHorizontalLines;
}
/**
* Returns true if the table draws vertical lines between cells, false if it
* doesn't. The default value is look and feel dependent.
*
* @return true if the table draws vertical lines between cells, false if it
* doesn't
* @see #setShowVerticalLines
*/
public boolean getShowVerticalLines() {
return showVerticalLines;
}
/**
* Sets the table's auto resize mode when the table is resized. For further
* information on how the different resize modes work, see
* {@link #doLayout}.
*
* @param mode One of 5 legal values:
* AUTO_RESIZE_OFF,
* AUTO_RESIZE_NEXT_COLUMN,
* AUTO_RESIZE_SUBSEQUENT_COLUMNS,
* AUTO_RESIZE_LAST_COLUMN,
* AUTO_RESIZE_ALL_COLUMNS
*
* @see #getAutoResizeMode
* @see #doLayout
* @beaninfo
* bound: true
* description: Whether the columns should adjust themselves automatically.
* enum: AUTO_RESIZE_OFF JTable.AUTO_RESIZE_OFF
* AUTO_RESIZE_NEXT_COLUMN JTable.AUTO_RESIZE_NEXT_COLUMN
* AUTO_RESIZE_SUBSEQUENT_COLUMNS JTable.AUTO_RESIZE_SUBSEQUENT_COLUMNS
* AUTO_RESIZE_LAST_COLUMN JTable.AUTO_RESIZE_LAST_COLUMN
* AUTO_RESIZE_ALL_COLUMNS JTable.AUTO_RESIZE_ALL_COLUMNS
*/
public void setAutoResizeMode(int mode) {
if ((mode == AUTO_RESIZE_OFF) ||
(mode == AUTO_RESIZE_NEXT_COLUMN) ||
(mode == AUTO_RESIZE_SUBSEQUENT_COLUMNS) ||
(mode == AUTO_RESIZE_LAST_COLUMN) ||
(mode == AUTO_RESIZE_ALL_COLUMNS)) {
int old = autoResizeMode;
autoResizeMode = mode;
resizeAndRepaint();
if (tableHeader != null) {
tableHeader.resizeAndRepaint();
}
firePropertyChange("autoResizeMode", old, autoResizeMode);
}
}
/**
* Returns the auto resize mode of the table. The default mode
* is AUTO_RESIZE_SUBSEQUENT_COLUMNS.
*
* @return the autoResizeMode of the table
*
* @see #setAutoResizeMode
* @see #doLayout
*/
public int getAutoResizeMode() {
return autoResizeMode;
}
/**
* Sets this table's <code>autoCreateColumnsFromModel flag.
* This method calls <code>createDefaultColumnsFromModel if
* <code>autoCreateColumnsFromModel changes from false to true.
*
* @param autoCreateColumnsFromModel true if <code>JTable should automatically create columns
* @see #getAutoCreateColumnsFromModel
* @see #createDefaultColumnsFromModel
* @beaninfo
* bound: true
* description: Automatically populates the columnModel when a new TableModel is submitted.
*/
public void setAutoCreateColumnsFromModel(boolean autoCreateColumnsFromModel) {
if (this.autoCreateColumnsFromModel != autoCreateColumnsFromModel) {
boolean old = this.autoCreateColumnsFromModel;
this.autoCreateColumnsFromModel = autoCreateColumnsFromModel;
if (autoCreateColumnsFromModel) {
createDefaultColumnsFromModel();
}
firePropertyChange("autoCreateColumnsFromModel", old, autoCreateColumnsFromModel);
}
}
/**
* Determines whether the table will create default columns from the model.
* If true, <code>setModel will clear any existing columns and
* create new columns from the new model. Also, if the event in
* the <code>tableChanged notification specifies that the
* entire table changed, then the columns will be rebuilt.
* The default is true.
*
* @return the autoCreateColumnsFromModel of the table
* @see #setAutoCreateColumnsFromModel
* @see #createDefaultColumnsFromModel
*/
public boolean getAutoCreateColumnsFromModel() {
return autoCreateColumnsFromModel;
}
/**
* Creates default columns for the table from
* the data model using the <code>getColumnCount method
* defined in the <code>TableModel interface.
* <p>
* Clears any existing columns before creating the
* new columns based on information from the model.
*
* @see #getAutoCreateColumnsFromModel
*/
public void createDefaultColumnsFromModel() {
TableModel m = getModel();
if (m != null) {
// Remove any current columns
TableColumnModel cm = getColumnModel();
while (cm.getColumnCount() > 0) {
cm.removeColumn(cm.getColumn(0));
}
// Create new columns from the data model info
for (int i = 0; i < m.getColumnCount(); i++) {
TableColumn newColumn = new TableColumn(i);
addColumn(newColumn);
}
}
}
/**
* Sets a default cell renderer to be used if no renderer has been set in
* a <code>TableColumn. If renderer is null,
* removes the default renderer for this column class.
*
* @param columnClass set the default cell renderer for this columnClass
* @param renderer default cell renderer to be used for this
* columnClass
* @see #getDefaultRenderer
* @see #setDefaultEditor
*/
public void setDefaultRenderer(Class<?> columnClass, TableCellRenderer renderer) {
if (renderer != null) {
defaultRenderersByColumnClass.put(columnClass, renderer);
}
else {
defaultRenderersByColumnClass.remove(columnClass);
}
}
/**
* Returns the cell renderer to be used when no renderer has been set in
* a <code>TableColumn. During the rendering of cells the renderer is fetched from
* a <code>Hashtable of entries according to the class of the cells in the column. If
* there is no entry for this <code>columnClass the method returns
* the entry for the most specific superclass. The <code>JTable installs entries
* for <code>Object, Number, and Boolean, all of which can be modified
* or replaced.
*
* @param columnClass return the default cell renderer
* for this columnClass
* @return the renderer for this columnClass
* @see #setDefaultRenderer
* @see #getColumnClass
*/
public TableCellRenderer getDefaultRenderer(Class<?> columnClass) {
if (columnClass == null) {
return null;
}
else {
Object renderer = defaultRenderersByColumnClass.get(columnClass);
if (renderer != null) {
return (TableCellRenderer)renderer;
}
else {
Class c = columnClass.getSuperclass();
if (c == null && columnClass != Object.class) {
c = Object.class;
}
return getDefaultRenderer(c);
}
}
}
/**
* Sets a default cell editor to be used if no editor has been set in
* a <code>TableColumn. If no editing is required in a table, or a
* particular column in a table, uses the <code>isCellEditable
* method in the <code>TableModel interface to ensure that this
* <code>JTable will not start an editor in these columns.
* If editor is <code>null, removes the default editor for this
* column class.
*
* @param columnClass set the default cell editor for this columnClass
* @param editor default cell editor to be used for this columnClass
* @see TableModel#isCellEditable
* @see #getDefaultEditor
* @see #setDefaultRenderer
*/
public void setDefaultEditor(Class<?> columnClass, TableCellEditor editor) {
if (editor != null) {
defaultEditorsByColumnClass.put(columnClass, editor);
}
else {
defaultEditorsByColumnClass.remove(columnClass);
}
}
/**
* Returns the editor to be used when no editor has been set in
* a <code>TableColumn. During the editing of cells the editor is fetched from
* a <code>Hashtable of entries according to the class of the cells in the column. If
* there is no entry for this <code>columnClass the method returns
* the entry for the most specific superclass. The <code>JTable installs entries
* for <code>Object, Number, and Boolean, all of which can be modified
* or replaced.
*
* @param columnClass return the default cell editor for this columnClass
* @return the default cell editor to be used for this columnClass
* @see #setDefaultEditor
* @see #getColumnClass
*/
public TableCellEditor getDefaultEditor(Class<?> columnClass) {
if (columnClass == null) {
return null;
}
else {
Object editor = defaultEditorsByColumnClass.get(columnClass);
if (editor != null) {
return (TableCellEditor)editor;
}
else {
return getDefaultEditor(columnClass.getSuperclass());
}
}
}
/**
* Turns on or off automatic drag handling. In order to enable automatic
* drag handling, this property should be set to {@code true}, and the
* table's {@code TransferHandler} needs to be {@code non-null}.
* The default value of the {@code dragEnabled} property is {@code false}.
* <p>
* The job of honoring this property, and recognizing a user drag gesture,
* lies with the look and feel implementation, and in particular, the table's
* {@code TableUI}. When automatic drag handling is enabled, most look and
* feels (including those that subclass {@code BasicLookAndFeel}) begin a
* drag and drop operation whenever the user presses the mouse button over
* an item (in single selection mode) or a selection (in other selection
* modes) and then moves the mouse a few pixels. Setting this property to
* {@code true} can therefore have a subtle effect on how selections behave.
* <p>
* If a look and feel is used that ignores this property, you can still
* begin a drag and drop operation by calling {@code exportAsDrag} on the
* table's {@code TransferHandler}.
*
* @param b whether or not to enable automatic drag handling
* @exception HeadlessException if
* <code>b is true and
* <code>GraphicsEnvironment.isHeadless()
* returns <code>true
* @see java.awt.GraphicsEnvironment#isHeadless
* @see #getDragEnabled
* @see #setTransferHandler
* @see TransferHandler
* @since 1.4
*
* @beaninfo
* description: determines whether automatic drag handling is enabled
* bound: false
*/
public void setDragEnabled(boolean b) {
if (b && GraphicsEnvironment.isHeadless()) {
throw new HeadlessException();
}
dragEnabled = b;
}
/**
* Returns whether or not automatic drag handling is enabled.
*
* @return the value of the {@code dragEnabled} property
* @see #setDragEnabled
* @since 1.4
*/
public boolean getDragEnabled() {
return dragEnabled;
}
/**
* Sets the drop mode for this component. For backward compatibility,
* the default for this property is <code>DropMode.USE_SELECTION.
* Usage of one of the other modes is recommended, however, for an
* improved user experience. <code>DropMode.ON, for instance,
* offers similar behavior of showing items as selected, but does so without
* affecting the actual selection in the table.
* <p>
* <code>JTable supports the following drop modes:
* <ul>
* <li>DropMode.USE_SELECTION
* <li>DropMode.ON
* <li>DropMode.INSERT
* <li>DropMode.INSERT_ROWS
* <li>DropMode.INSERT_COLS
* <li>DropMode.ON_OR_INSERT
* <li>DropMode.ON_OR_INSERT_ROWS
* <li>DropMode.ON_OR_INSERT_COLS
* </ul>
* <p>
* The drop mode is only meaningful if this component has a
* <code>TransferHandler that accepts drops.
*
* @param dropMode the drop mode to use
* @throws IllegalArgumentException if the drop mode is unsupported
* or <code>null
* @see #getDropMode
* @see #getDropLocation
* @see #setTransferHandler
* @see TransferHandler
* @since 1.6
*/
public final void setDropMode(DropMode dropMode) {
if (dropMode != null) {
switch (dropMode) {
case USE_SELECTION:
case ON:
case INSERT:
case INSERT_ROWS:
case INSERT_COLS:
case ON_OR_INSERT:
case ON_OR_INSERT_ROWS:
case ON_OR_INSERT_COLS:
this.dropMode = dropMode;
return;
}
}
throw new IllegalArgumentException(dropMode + ": Unsupported drop mode for table");
}
/**
* Returns the drop mode for this component.
*
* @return the drop mode for this component
* @see #setDropMode
* @since 1.6
*/
public final DropMode getDropMode() {
return dropMode;
}
/**
* Calculates a drop location in this component, representing where a
* drop at the given point should insert data.
*
* @param p the point to calculate a drop location for
* @return the drop location, or <code>null
*/
DropLocation dropLocationForPoint(Point p) {
DropLocation location = null;
int row = rowAtPoint(p);
int col = columnAtPoint(p);
boolean outside = Boolean.TRUE == getClientProperty("Table.isFileList")
&& SwingUtilities2.pointOutsidePrefSize(this, row, col, p);
Rectangle rect = getCellRect(row, col, true);
Section xSection, ySection;
boolean between = false;
boolean ltr = getComponentOrientation().isLeftToRight();
switch(dropMode) {
case USE_SELECTION:
case ON:
if (row == -1 || col == -1 || outside) {
location = new DropLocation(p, -1, -1, false, false);
} else {
location = new DropLocation(p, row, col, false, false);
}
break;
case INSERT:
if (row == -1 && col == -1) {
location = new DropLocation(p, 0, 0, true, true);
break;
}
xSection = SwingUtilities2.liesInHorizontal(rect, p, ltr, true);
if (row == -1) {
if (xSection == LEADING) {
location = new DropLocation(p, getRowCount(), col, true, true);
} else if (xSection == TRAILING) {
location = new DropLocation(p, getRowCount(), col + 1, true, true);
} else {
location = new DropLocation(p, getRowCount(), col, true, false);
}
} else if (xSection == LEADING || xSection == TRAILING) {
ySection = SwingUtilities2.liesInVertical(rect, p, true);
if (ySection == LEADING) {
between = true;
} else if (ySection == TRAILING) {
row++;
between = true;
}
location = new DropLocation(p, row,
xSection == TRAILING ? col + 1 : col,
between, true);
} else {
if (SwingUtilities2.liesInVertical(rect, p, false) == TRAILING) {
row++;
}
location = new DropLocation(p, row, col, true, false);
}
break;
case INSERT_ROWS:
if (row == -1 && col == -1) {
location = new DropLocation(p, -1, -1, false, false);
break;
}
if (row == -1) {
location = new DropLocation(p, getRowCount(), col, true, false);
break;
}
if (SwingUtilities2.liesInVertical(rect, p, false) == TRAILING) {
row++;
}
location = new DropLocation(p, row, col, true, false);
break;
case ON_OR_INSERT_ROWS:
if (row == -1 && col == -1) {
location = new DropLocation(p, -1, -1, false, false);
break;
}
if (row == -1) {
location = new DropLocation(p, getRowCount(), col, true, false);
break;
}
ySection = SwingUtilities2.liesInVertical(rect, p, true);
if (ySection == LEADING) {
between = true;
} else if (ySection == TRAILING) {
row++;
between = true;
}
location = new DropLocation(p, row, col, between, false);
break;
case INSERT_COLS:
if (row == -1) {
location = new DropLocation(p, -1, -1, false, false);
break;
}
if (col == -1) {
location = new DropLocation(p, getColumnCount(), col, false, true);
break;
}
if (SwingUtilities2.liesInHorizontal(rect, p, ltr, false) == TRAILING) {
col++;
}
location = new DropLocation(p, row, col, false, true);
break;
case ON_OR_INSERT_COLS:
if (row == -1) {
location = new DropLocation(p, -1, -1, false, false);
break;
}
if (col == -1) {
location = new DropLocation(p, row, getColumnCount(), false, true);
break;
}
xSection = SwingUtilities2.liesInHorizontal(rect, p, ltr, true);
if (xSection == LEADING) {
between = true;
} else if (xSection == TRAILING) {
col++;
between = true;
}
location = new DropLocation(p, row, col, false, between);
break;
case ON_OR_INSERT:
if (row == -1 && col == -1) {
location = new DropLocation(p, 0, 0, true, true);
break;
}
xSection = SwingUtilities2.liesInHorizontal(rect, p, ltr, true);
if (row == -1) {
if (xSection == LEADING) {
location = new DropLocation(p, getRowCount(), col, true, true);
} else if (xSection == TRAILING) {
location = new DropLocation(p, getRowCount(), col + 1, true, true);
} else {
location = new DropLocation(p, getRowCount(), col, true, false);
}
break;
}
ySection = SwingUtilities2.liesInVertical(rect, p, true);
if (ySection == LEADING) {
between = true;
} else if (ySection == TRAILING) {
row++;
between = true;
}
location = new DropLocation(p, row,
xSection == TRAILING ? col + 1 : col,
between,
xSection != MIDDLE);
break;
default:
assert false : "Unexpected drop mode";
}
return location;
}
/**
* Called to set or clear the drop location during a DnD operation.
* In some cases, the component may need to use it's internal selection
* temporarily to indicate the drop location. To help facilitate this,
* this method returns and accepts as a parameter a state object.
* This state object can be used to store, and later restore, the selection
* state. Whatever this method returns will be passed back to it in
* future calls, as the state parameter. If it wants the DnD system to
* continue storing the same state, it must pass it back every time.
* Here's how this is used:
* <p>
* Let's say that on the first call to this method the component decides
* to save some state (because it is about to use the selection to show
* a drop index). It can return a state object to the caller encapsulating
* any saved selection state. On a second call, let's say the drop location
* is being changed to something else. The component doesn't need to
* restore anything yet, so it simply passes back the same state object
* to have the DnD system continue storing it. Finally, let's say this
* method is messaged with <code>null. This means DnD
* is finished with this component for now, meaning it should restore
* state. At this point, it can use the state parameter to restore
* said state, and of course return <code>null since there's
* no longer anything to store.
*
* @param location the drop location (as calculated by
* <code>dropLocationForPoint) or null
* if there's no longer a valid drop location
* @param state the state object saved earlier for this component,
* or <code>null
* @param forDrop whether or not the method is being called because an
* actual drop occurred
* @return any saved state for this component, or <code>null if none
*/
Object setDropLocation(TransferHandler.DropLocation location,
Object state,
boolean forDrop) {
Object retVal = null;
DropLocation tableLocation = (DropLocation)location;
if (dropMode == DropMode.USE_SELECTION) {
if (tableLocation == null) {
if (!forDrop && state != null) {
clearSelection();
int[] rows = ((int[][])state)[0];
int[] cols = ((int[][])state)[1];
int[] anchleads = ((int[][])state)[2];
for (int row : rows) {
addRowSelectionInterval(row, row);
}
for (int col : cols) {
addColumnSelectionInterval(col, col);
}
SwingUtilities2.setLeadAnchorWithoutSelection(
getSelectionModel(), anchleads[1], anchleads[0]);
SwingUtilities2.setLeadAnchorWithoutSelection(
getColumnModel().getSelectionModel(),
anchleads[3], anchleads[2]);
}
} else {
if (dropLocation == null) {
retVal = new int[][]{
getSelectedRows(),
getSelectedColumns(),
{getAdjustedIndex(getSelectionModel()
.getAnchorSelectionIndex(), true),
getAdjustedIndex(getSelectionModel()
.getLeadSelectionIndex(), true),
getAdjustedIndex(getColumnModel().getSelectionModel()
.getAnchorSelectionIndex(), false),
getAdjustedIndex(getColumnModel().getSelectionModel()
.getLeadSelectionIndex(), false)}};
} else {
retVal = state;
}
if (tableLocation.getRow() == -1) {
clearSelectionAndLeadAnchor();
} else {
setRowSelectionInterval(tableLocation.getRow(),
tableLocation.getRow());
setColumnSelectionInterval(tableLocation.getColumn(),
tableLocation.getColumn());
}
}
}
DropLocation old = dropLocation;
dropLocation = tableLocation;
firePropertyChange("dropLocation", old, dropLocation);
return retVal;
}
/**
* Returns the location that this component should visually indicate
* as the drop location during a DnD operation over the component,
* or {@code null} if no location is to currently be shown.
* <p>
* This method is not meant for querying the drop location
* from a {@code TransferHandler}, as the drop location is only
* set after the {@code TransferHandler}'s <code>canImport
* has returned and has allowed for the location to be shown.
* <p>
* When this property changes, a property change event with
* name "dropLocation" is fired by the component.
*
* @return the drop location
* @see #setDropMode
* @see TransferHandler#canImport(TransferHandler.TransferSupport)
* @since 1.6
*/
public final DropLocation getDropLocation() {
return dropLocation;
}
/**
* Specifies whether a {@code RowSorter} should be created for the
* table whenever its model changes.
* <p>
* When {@code setAutoCreateRowSorter(true)} is invoked, a {@code
* TableRowSorter} is immediately created and installed on the
* table. While the {@code autoCreateRowSorter} property remains
* {@code true}, every time the model is changed, a new {@code
* TableRowSorter} is created and set as the table's row sorter.
* The default value for the {@code autoCreateRowSorter}
* property is {@code false}.
*
* @param autoCreateRowSorter whether or not a {@code RowSorter}
* should be automatically created
* @see javax.swing.table.TableRowSorter
* @beaninfo
* bound: true
* preferred: true
* description: Whether or not to turn on sorting by default.
* @since 1.6
*/
public void setAutoCreateRowSorter(boolean autoCreateRowSorter) {
boolean oldValue = this.autoCreateRowSorter;
this.autoCreateRowSorter = autoCreateRowSorter;
if (autoCreateRowSorter) {
setRowSorter(new TableRowSorter<TableModel>(getModel()));
}
firePropertyChange("autoCreateRowSorter", oldValue,
autoCreateRowSorter);
}
/**
* Returns {@code true} if whenever the model changes, a new
* {@code RowSorter} should be created and installed
* as the table's sorter; otherwise, returns {@code false}.
*
* @return true if a {@code RowSorter} should be created when
* the model changes
* @since 1.6
*/
public boolean getAutoCreateRowSorter() {
return autoCreateRowSorter;
}
/**
* Specifies whether the selection should be updated after sorting.
* If true, on sorting the selection is reset such that
* the same rows, in terms of the model, remain selected. The default
* is true.
*
* @param update whether or not to update the selection on sorting
* @beaninfo
* bound: true
* expert: true
* description: Whether or not to update the selection on sorting
* @since 1.6
*/
public void setUpdateSelectionOnSort(boolean update) {
if (updateSelectionOnSort != update) {
updateSelectionOnSort = update;
firePropertyChange("updateSelectionOnSort", !update, update);
}
}
/**
* Returns true if the selection should be updated after sorting.
*
* @return whether to update the selection on a sort
* @since 1.6
*/
public boolean getUpdateSelectionOnSort() {
return updateSelectionOnSort;
}
/**
* Sets the <code>RowSorter. RowSorter is used
* to provide sorting and filtering to a <code>JTable.
* <p>
* This method clears the selection and resets any variable row heights.
* <p>
* This method fires a <code>PropertyChangeEvent when appropriate,
* with the property name <code>"rowSorter". For
* backward-compatibility, this method fires an additional event with the
* property name <code>"sorter".
* <p>
* If the underlying model of the <code>RowSorter differs from
* that of this <code>JTable undefined behavior will result.
*
* @param sorter the <code>RowSorter; null turns
* sorting off
* @see javax.swing.table.TableRowSorter
* @beaninfo
* bound: true
* description: The table's RowSorter
* @since 1.6
*/
public void setRowSorter(RowSorter<? extends TableModel> sorter) {
RowSorter<? extends TableModel> oldRowSorter = null;
if (sortManager != null) {
oldRowSorter = sortManager.sorter;
sortManager.dispose();
sortManager = null;
}
rowModel = null;
clearSelectionAndLeadAnchor();
if (sorter != null) {
sortManager = new SortManager(sorter);
}
resizeAndRepaint();
firePropertyChange("rowSorter", oldRowSorter, sorter);
firePropertyChange("sorter", oldRowSorter, sorter);
}
/**
* Returns the object responsible for sorting.
*
* @return the object responsible for sorting
* @since 1.6
*/
public RowSorter<? extends TableModel> getRowSorter() {
return (sortManager != null) ? sortManager.sorter : null;
}
//
// Selection methods
//
/**
* Sets the table's selection mode to allow only single selections, a single
* contiguous interval, or multiple intervals.
* <P>
* <b>Note:
* <code>JTable provides all the methods for handling
* column and row selection. When setting states,
* such as <code>setSelectionMode, it not only
* updates the mode for the row selection model but also sets similar
* values in the selection model of the <code>columnModel.
* If you want to have the row and column selection models operating
* in different modes, set them both directly.
* <p>
* Both the row and column selection models for <code>JTable
* default to using a <code>DefaultListSelectionModel
* so that <code>JTable works the same way as the
* <code>JList. See the setSelectionMode method
* in <code>JList for details about the modes.
*
* @see JList#setSelectionMode
* @beaninfo
* description: The selection mode used by the row and column selection models.
* enum: SINGLE_SELECTION ListSelectionModel.SINGLE_SELECTION
* SINGLE_INTERVAL_SELECTION ListSelectionModel.SINGLE_INTERVAL_SELECTION
* MULTIPLE_INTERVAL_SELECTION ListSelectionModel.MULTIPLE_INTERVAL_SELECTION
*/
public void setSelectionMode(int selectionMode) {
clearSelection();
getSelectionModel().setSelectionMode(selectionMode);
getColumnModel().getSelectionModel().setSelectionMode(selectionMode);
}
/**
* Sets whether the rows in this model can be selected.
*
* @param rowSelectionAllowed true if this model will allow row selection
* @see #getRowSelectionAllowed
* @beaninfo
* bound: true
* attribute: visualUpdate true
* description: If true, an entire row is selected for each selected cell.
*/
public void setRowSelectionAllowed(boolean rowSelectionAllowed) {
boolean old = this.rowSelectionAllowed;
this.rowSelectionAllowed = rowSelectionAllowed;
if (old != rowSelectionAllowed) {
repaint();
}
firePropertyChange("rowSelectionAllowed", old, rowSelectionAllowed);
}
/**
* Returns true if rows can be selected.
*
* @return true if rows can be selected, otherwise false
* @see #setRowSelectionAllowed
*/
public boolean getRowSelectionAllowed() {
return rowSelectionAllowed;
}
/**
* Sets whether the columns in this model can be selected.
*
* @param columnSelectionAllowed true if this model will allow column selection
* @see #getColumnSelectionAllowed
* @beaninfo
* bound: true
* attribute: visualUpdate true
* description: If true, an entire column is selected for each selected cell.
*/
public void setColumnSelectionAllowed(boolean columnSelectionAllowed) {
boolean old = columnModel.getColumnSelectionAllowed();
columnModel.setColumnSelectionAllowed(columnSelectionAllowed);
if (old != columnSelectionAllowed) {
repaint();
}
firePropertyChange("columnSelectionAllowed", old, columnSelectionAllowed);
}
/**
* Returns true if columns can be selected.
*
* @return true if columns can be selected, otherwise false
* @see #setColumnSelectionAllowed
*/
public boolean getColumnSelectionAllowed() {
return columnModel.getColumnSelectionAllowed();
}
/**
* Sets whether this table allows both a column selection and a
* row selection to exist simultaneously. When set,
* the table treats the intersection of the row and column selection
* models as the selected cells. Override <code>isCellSelected to
* change this default behavior. This method is equivalent to setting
* both the <code>rowSelectionAllowed property and
* <code>columnSelectionAllowed property of the
* <code>columnModel to the supplied value.
*
* @param cellSelectionEnabled true if simultaneous row and column
* selection is allowed
* @see #getCellSelectionEnabled
* @see #isCellSelected
* @beaninfo
* bound: true
* attribute: visualUpdate true
* description: Select a rectangular region of cells rather than
* rows or columns.
*/
public void setCellSelectionEnabled(boolean cellSelectionEnabled) {
setRowSelectionAllowed(cellSelectionEnabled);
setColumnSelectionAllowed(cellSelectionEnabled);
boolean old = this.cellSelectionEnabled;
this.cellSelectionEnabled = cellSelectionEnabled;
firePropertyChange("cellSelectionEnabled", old, cellSelectionEnabled);
}
/**
* Returns true if both row and column selection models are enabled.
* Equivalent to <code>getRowSelectionAllowed() &&
* getColumnSelectionAllowed()</code>.
*
* @return true if both row and column selection models are enabled
*
* @see #setCellSelectionEnabled
*/
public boolean getCellSelectionEnabled() {
return getRowSelectionAllowed() && getColumnSelectionAllowed();
}
/**
* Selects all rows, columns, and cells in the table.
*/
public void selectAll() {
// If I'm currently editing, then I should stop editing
if (isEditing()) {
removeEditor();
}
if (getRowCount() > 0 && getColumnCount() > 0) {
int oldLead;
int oldAnchor;
ListSelectionModel selModel;
selModel = selectionModel;
selModel.setValueIsAdjusting(true);
oldLead = getAdjustedIndex(selModel.getLeadSelectionIndex(), true);
oldAnchor = getAdjustedIndex(selModel.getAnchorSelectionIndex(), true);
setRowSelectionInterval(0, getRowCount()-1);
// this is done to restore the anchor and lead
SwingUtilities2.setLeadAnchorWithoutSelection(selModel, oldLead, oldAnchor);
selModel.setValueIsAdjusting(false);
selModel = columnModel.getSelectionModel();
selModel.setValueIsAdjusting(true);
oldLead = getAdjustedIndex(selModel.getLeadSelectionIndex(), false);
oldAnchor = getAdjustedIndex(selModel.getAnchorSelectionIndex(), false);
setColumnSelectionInterval(0, getColumnCount()-1);
// this is done to restore the anchor and lead
SwingUtilities2.setLeadAnchorWithoutSelection(selModel, oldLead, oldAnchor);
selModel.setValueIsAdjusting(false);
}
}
/**
* Deselects all selected columns and rows.
*/
public void clearSelection() {
selectionModel.clearSelection();
columnModel.getSelectionModel().clearSelection();
}
private void clearSelectionAndLeadAnchor() {
selectionModel.setValueIsAdjusting(true);
columnModel.getSelectionModel().setValueIsAdjusting(true);
clearSelection();
selectionModel.setAnchorSelectionIndex(-1);
selectionModel.setLeadSelectionIndex(-1);
columnModel.getSelectionModel().setAnchorSelectionIndex(-1);
columnModel.getSelectionModel().setLeadSelectionIndex(-1);
selectionModel.setValueIsAdjusting(false);
columnModel.getSelectionModel().setValueIsAdjusting(false);
}
private int getAdjustedIndex(int index, boolean row) {
int compare = row ? getRowCount() : getColumnCount();
return index < compare ? index : -1;
}
private int boundRow(int row) throws IllegalArgumentException {
if (row < 0 || row >= getRowCount()) {
throw new IllegalArgumentException("Row index out of range");
}
return row;
}
private int boundColumn(int col) {
if (col< 0 || col >= getColumnCount()) {
throw new IllegalArgumentException("Column index out of range");
}
return col;
}
/**
* Selects the rows from <code>index0 to index1,
* inclusive.
*
* @exception IllegalArgumentException if <code>index0 or
* <code>index1 lie outside
* [0, <code>getRowCount()-1]
* @param index0 one end of the interval
* @param index1 the other end of the interval
*/
public void setRowSelectionInterval(int index0, int index1) {
selectionModel.setSelectionInterval(boundRow(index0), boundRow(index1));
}
/**
* Selects the columns from <code>index0 to index1,
* inclusive.
*
* @exception IllegalArgumentException if <code>index0 or
* <code>index1 lie outside
* [0, <code>getColumnCount()-1]
* @param index0 one end of the interval
* @param index1 the other end of the interval
*/
public void setColumnSelectionInterval(int index0, int index1) {
columnModel.getSelectionModel().setSelectionInterval(boundColumn(index0), boundColumn(index1));
}
/**
* Adds the rows from <code>index0 to index1, inclusive, to
* the current selection.
*
* @exception IllegalArgumentException if <code>index0 or index1
* lie outside [0, <code>getRowCount()-1]
* @param index0 one end of the interval
* @param index1 the other end of the interval
*/
public void addRowSelectionInterval(int index0, int index1) {
selectionModel.addSelectionInterval(boundRow(index0), boundRow(index1));
}
/**
* Adds the columns from <code>index0 to index1,
* inclusive, to the current selection.
*
* @exception IllegalArgumentException if <code>index0 or
* <code>index1 lie outside
* [0, <code>getColumnCount()-1]
* @param index0 one end of the interval
* @param index1 the other end of the interval
*/
public void addColumnSelectionInterval(int index0, int index1) {
columnModel.getSelectionModel().addSelectionInterval(boundColumn(index0), boundColumn(index1));
}
/**
* Deselects the rows from <code>index0 to index1, inclusive.
*
* @exception IllegalArgumentException if <code>index0 or
* <code>index1 lie outside
* [0, <code>getRowCount()-1]
* @param index0 one end of the interval
* @param index1 the other end of the interval
*/
public void removeRowSelectionInterval(int index0, int index1) {
selectionModel.removeSelectionInterval(boundRow(index0), boundRow(index1));
}
/**
* Deselects the columns from <code>index0 to index1, inclusive.
*
* @exception IllegalArgumentException if <code>index0 or
* <code>index1 lie outside
* [0, <code>getColumnCount()-1]
* @param index0 one end of the interval
* @param index1 the other end of the interval
*/
public void removeColumnSelectionInterval(int index0, int index1) {
columnModel.getSelectionModel().removeSelectionInterval(boundColumn(index0), boundColumn(index1));
}
/**
* Returns the index of the first selected row, -1 if no row is selected.
* @return the index of the first selected row
*/
public int getSelectedRow() {
return selectionModel.getMinSelectionIndex();
}
/**
* Returns the index of the first selected column,
* -1 if no column is selected.
* @return the index of the first selected column
*/
public int getSelectedColumn() {
return columnModel.getSelectionModel().getMinSelectionIndex();
}
/**
* Returns the indices of all selected rows.
*
* @return an array of integers containing the indices of all selected rows,
* or an empty array if no row is selected
* @see #getSelectedRow
*/
public int[] getSelectedRows() {
int iMin = selectionModel.getMinSelectionIndex();
int iMax = selectionModel.getMaxSelectionIndex();
if ((iMin == -1) || (iMax == -1)) {
return new int[0];
}
int[] rvTmp = new int[1+ (iMax - iMin)];
int n = 0;
for(int i = iMin; i <= iMax; i++) {
if (selectionModel.isSelectedIndex(i)) {
rvTmp[n++] = i;
}
}
int[] rv = new int[n];
System.arraycopy(rvTmp, 0, rv, 0, n);
return rv;
}
/**
* Returns the indices of all selected columns.
*
* @return an array of integers containing the indices of all selected columns,
* or an empty array if no column is selected
* @see #getSelectedColumn
*/
public int[] getSelectedColumns() {
return columnModel.getSelectedColumns();
}
/**
* Returns the number of selected rows.
*
* @return the number of selected rows, 0 if no rows are selected
*/
public int getSelectedRowCount() {
int iMin = selectionModel.getMinSelectionIndex();
int iMax = selectionModel.getMaxSelectionIndex();
int count = 0;
for(int i = iMin; i <= iMax; i++) {
if (selectionModel.isSelectedIndex(i)) {
count++;
}
}
return count;
}
/**
* Returns the number of selected columns.
*
* @return the number of selected columns, 0 if no columns are selected
*/
public int getSelectedColumnCount() {
return columnModel.getSelectedColumnCount();
}
/**
* Returns true if the specified index is in the valid range of rows,
* and the row at that index is selected.
*
* @return true if <code>row is a valid index and the row at
* that index is selected (where 0 is the first row)
*/
public boolean isRowSelected(int row) {
return selectionModel.isSelectedIndex(row);
}
/**
* Returns true if the specified index is in the valid range of columns,
* and the column at that index is selected.
*
* @param column the column in the column model
* @return true if <code>column is a valid index and the column at
* that index is selected (where 0 is the first column)
*/
public boolean isColumnSelected(int column) {
return columnModel.getSelectionModel().isSelectedIndex(column);
}
/**
* Returns true if the specified indices are in the valid range of rows
* and columns and the cell at the specified position is selected.
* @param row the row being queried
* @param column the column being queried
*
* @return true if <code>row and column are valid indices
* and the cell at index <code>(row, column) is selected,
* where the first row and first column are at index 0
*/
public boolean isCellSelected(int row, int column) {
if (!getRowSelectionAllowed() && !getColumnSelectionAllowed()) {
return false;
}
return (!getRowSelectionAllowed() || isRowSelected(row)) &&
(!getColumnSelectionAllowed() || isColumnSelected(column));
}
private void changeSelectionModel(ListSelectionModel sm, int index,
boolean toggle, boolean extend, boolean selected,
int anchor, boolean anchorSelected) {
if (extend) {
if (toggle) {
if (anchorSelected) {
sm.addSelectionInterval(anchor, index);
} else {
sm.removeSelectionInterval(anchor, index);
// this is a Windows-only behavior that we want for file lists
if (Boolean.TRUE == getClientProperty("Table.isFileList")) {
sm.addSelectionInterval(index, index);
sm.setAnchorSelectionIndex(anchor);
}
}
}
else {
sm.setSelectionInterval(anchor, index);
}
}
else {
if (toggle) {
if (selected) {
sm.removeSelectionInterval(index, index);
}
else {
sm.addSelectionInterval(index, index);
}
}
else {
sm.setSelectionInterval(index, index);
}
}
}
/**
* Updates the selection models of the table, depending on the state of the
* two flags: <code>toggle and extend. Most changes
* to the selection that are the result of keyboard or mouse events received
* by the UI are channeled through this method so that the behavior may be
* overridden by a subclass. Some UIs may need more functionality than
* this method provides, such as when manipulating the lead for discontiguous
* selection, and may not call into this method for some selection changes.
* <p>
* This implementation uses the following conventions:
* <ul>
* <li> toggle: false, extend: false.
* Clear the previous selection and ensure the new cell is selected.
* <li> toggle: false, extend: true.
* Extend the previous selection from the anchor to the specified cell,
* clearing all other selections.
* <li> toggle: true, extend: false.
* If the specified cell is selected, deselect it. If it is not selected, select it.
* <li> toggle: true, extend: true.
* Apply the selection state of the anchor to all cells between it and the
* specified cell.
* </ul>
* @param rowIndex affects the selection at <code>row
* @param columnIndex affects the selection at <code>column
* @param toggle see description above
* @param extend if true, extend the current selection
*
* @since 1.3
*/
public void changeSelection(int rowIndex, int columnIndex, boolean toggle, boolean extend) {
ListSelectionModel rsm = getSelectionModel();
ListSelectionModel csm = getColumnModel().getSelectionModel();
int anchorRow = getAdjustedIndex(rsm.getAnchorSelectionIndex(), true);
int anchorCol = getAdjustedIndex(csm.getAnchorSelectionIndex(), false);
boolean anchorSelected = true;
if (anchorRow == -1) {
if (getRowCount() > 0) {
anchorRow = 0;
}
anchorSelected = false;
}
if (anchorCol == -1) {
if (getColumnCount() > 0) {
anchorCol = 0;
}
anchorSelected = false;
}
// Check the selection here rather than in each selection model.
// This is significant in cell selection mode if we are supposed
// to be toggling the selection. In this case it is better to
// ensure that the cell's selection state will indeed be changed.
// If this were done in the code for the selection model it
// might leave a cell in selection state if the row was
// selected but the column was not - as it would toggle them both.
boolean selected = isCellSelected(rowIndex, columnIndex);
anchorSelected = anchorSelected && isCellSelected(anchorRow, anchorCol);
changeSelectionModel(csm, columnIndex, toggle, extend, selected,
anchorCol, anchorSelected);
changeSelectionModel(rsm, rowIndex, toggle, extend, selected,
anchorRow, anchorSelected);
// Scroll after changing the selection as blit scrolling is immediate,
// so that if we cause the repaint after the scroll we end up painting
// everything!
if (getAutoscrolls()) {
Rectangle cellRect = getCellRect(rowIndex, columnIndex, false);
if (cellRect != null) {
scrollRectToVisible(cellRect);
}
}
}
/**
* Returns the foreground color for selected cells.
*
* @return the <code>Color object for the foreground property
* @see #setSelectionForeground
* @see #setSelectionBackground
*/
public Color getSelectionForeground() {
return selectionForeground;
}
/**
* Sets the foreground color for selected cells. Cell renderers
* can use this color to render text and graphics for selected
* cells.
* <p>
* The default value of this property is defined by the look
* and feel implementation.
* <p>
* This is a <a href="http://docs.oracle.com/javase/tutorial/javabeans/writing/properties.html">JavaBeans bound property.
*
* @param selectionForeground the <code>Color to use in the foreground
* for selected list items
* @see #getSelectionForeground
* @see #setSelectionBackground
* @see #setForeground
* @see #setBackground
* @see #setFont
* @beaninfo
* bound: true
* description: A default foreground color for selected cells.
*/
public void setSelectionForeground(Color selectionForeground) {
Color old = this.selectionForeground;
this.selectionForeground = selectionForeground;
firePropertyChange("selectionForeground", old, selectionForeground);
repaint();
}
/**
* Returns the background color for selected cells.
*
* @return the <code>Color used for the background of selected list items
* @see #setSelectionBackground
* @see #setSelectionForeground
*/
public Color getSelectionBackground() {
return selectionBackground;
}
/**
* Sets the background color for selected cells. Cell renderers
* can use this color to the fill selected cells.
* <p>
* The default value of this property is defined by the look
* and feel implementation.
* <p>
* This is a <a href="http://docs.oracle.com/javase/tutorial/javabeans/writing/properties.html">JavaBeans bound property.
*
* @param selectionBackground the <code>Color to use for the background
* of selected cells
* @see #getSelectionBackground
* @see #setSelectionForeground
* @see #setForeground
* @see #setBackground
* @see #setFont
* @beaninfo
* bound: true
* description: A default background color for selected cells.
*/
public void setSelectionBackground(Color selectionBackground) {
Color old = this.selectionBackground;
this.selectionBackground = selectionBackground;
firePropertyChange("selectionBackground", old, selectionBackground);
repaint();
}
/**
* Returns the <code>TableColumn object for the column in the table
* whose identifier is equal to <code>identifier, when compared using
* <code>equals.
*
* @return the <code>TableColumn object that matches the identifier
* @exception IllegalArgumentException if <code>identifier is null or no TableColumn has this identifier
*
* @param identifier the identifier object
*/
public TableColumn getColumn(Object identifier) {
TableColumnModel cm = getColumnModel();
int columnIndex = cm.getColumnIndex(identifier);
return cm.getColumn(columnIndex);
}
//
// Informally implement the TableModel interface.
//
/**
* Maps the index of the column in the view at
* <code>viewColumnIndex to the index of the column
* in the table model. Returns the index of the corresponding
* column in the model. If <code>viewColumnIndex
* is less than zero, returns <code>viewColumnIndex.
*
* @param viewColumnIndex the index of the column in the view
* @return the index of the corresponding column in the model
*
* @see #convertColumnIndexToView
*/
public int convertColumnIndexToModel(int viewColumnIndex) {
return SwingUtilities2.convertColumnIndexToModel(
getColumnModel(), viewColumnIndex);
}
/**
* Maps the index of the column in the table model at
* <code>modelColumnIndex to the index of the column
* in the view. Returns the index of the
* corresponding column in the view; returns -1 if this column is not
* being displayed. If <code>modelColumnIndex is less than zero,
* returns <code>modelColumnIndex.
*
* @param modelColumnIndex the index of the column in the model
* @return the index of the corresponding column in the view
*
* @see #convertColumnIndexToModel
*/
public int convertColumnIndexToView(int modelColumnIndex) {
return SwingUtilities2.convertColumnIndexToView(
getColumnModel(), modelColumnIndex);
}
/**
* Maps the index of the row in terms of the
* <code>TableModel to the view. If the contents of the
* model are not sorted the model and view indices are the same.
*
* @param modelRowIndex the index of the row in terms of the model
* @return the index of the corresponding row in the view, or -1 if
* the row isn't visible
* @throws IndexOutOfBoundsException if sorting is enabled and passed an
* index outside the number of rows of the <code>TableModel
* @see javax.swing.table.TableRowSorter
* @since 1.6
*/
public int convertRowIndexToView(int modelRowIndex) {
RowSorter sorter = getRowSorter();
if (sorter != null) {
return sorter.convertRowIndexToView(modelRowIndex);
}
return modelRowIndex;
}
/**
* Maps the index of the row in terms of the view to the
* underlying <code>TableModel. If the contents of the
* model are not sorted the model and view indices are the same.
*
* @param viewRowIndex the index of the row in the view
* @return the index of the corresponding row in the model
* @throws IndexOutOfBoundsException if sorting is enabled and passed an
* index outside the range of the <code>JTable as
* determined by the method <code>getRowCount
* @see javax.swing.table.TableRowSorter
* @see #getRowCount
* @since 1.6
*/
public int convertRowIndexToModel(int viewRowIndex) {
RowSorter sorter = getRowSorter();
if (sorter != null) {
return sorter.convertRowIndexToModel(viewRowIndex);
}
return viewRowIndex;
}
/**
* Returns the number of rows that can be shown in the
* <code>JTable, given unlimited space. If a
* <code>RowSorter with a filter has been specified, the
* number of rows returned may differ from that of the underlying
* <code>TableModel.
*
* @return the number of rows shown in the <code>JTable
* @see #getColumnCount
*/
public int getRowCount() {
RowSorter sorter = getRowSorter();
if (sorter != null) {
return sorter.getViewRowCount();
}
return getModel().getRowCount();
}
/**
* Returns the number of columns in the column model. Note that this may
* be different from the number of columns in the table model.
*
* @return the number of columns in the table
* @see #getRowCount
* @see #removeColumn
*/
public int getColumnCount() {
return getColumnModel().getColumnCount();
}
/**
* Returns the name of the column appearing in the view at
* column position <code>column.
*
* @param column the column in the view being queried
* @return the name of the column at position <code>column
in the view where the first column is column 0
*/
public String getColumnName(int column) {
return getModel().getColumnName(convertColumnIndexToModel(column));
}
/**
* Returns the type of the column appearing in the view at
* column position <code>column.
*
* @param column the column in the view being queried
* @return the type of the column at position <code>column
* in the view where the first column is column 0
*/
public Class<?> getColumnClass(int column) {
return getModel().getColumnClass(convertColumnIndexToModel(column));
}
/**
* Returns the cell value at <code>row and column.
* <p>
* <b>Note: The column is specified in the table view's display
* order, and not in the <code>TableModel's column
* order. This is an important distinction because as the
* user rearranges the columns in the table,
* the column at a given index in the view will change.
* Meanwhile the user's actions never affect the model's
* column ordering.
*
* @param row the row whose value is to be queried
* @param column the column whose value is to be queried
* @return the Object at the specified cell
*/
public Object getValueAt(int row, int column) {
return getModel().getValueAt(convertRowIndexToModel(row),
convertColumnIndexToModel(column));
}
/**
* Sets the value for the cell in the table model at <code>row
* and <code>column.
* <p>
* <b>Note: The column is specified in the table view's display
* order, and not in the <code>TableModel's column
* order. This is an important distinction because as the
* user rearranges the columns in the table,
* the column at a given index in the view will change.
* Meanwhile the user's actions never affect the model's
* column ordering.
*
* <code>aValue is the new value.
*
* @param aValue the new value
* @param row the row of the cell to be changed
* @param column the column of the cell to be changed
* @see #getValueAt
*/
public void setValueAt(Object aValue, int row, int column) {
getModel().setValueAt(aValue, convertRowIndexToModel(row),
convertColumnIndexToModel(column));
}
/**
* Returns true if the cell at <code>row and column
* is editable. Otherwise, invoking <code>setValueAt on the cell
* will have no effect.
* <p>
* <b>Note: The column is specified in the table view's display
* order, and not in the <code>TableModel's column
* order. This is an important distinction because as the
* user rearranges the columns in the table,
* the column at a given index in the view will change.
* Meanwhile the user's actions never affect the model's
* column ordering.
*
*
* @param row the row whose value is to be queried
* @param column the column whose value is to be queried
* @return true if the cell is editable
* @see #setValueAt
*/
public boolean isCellEditable(int row, int column) {
return getModel().isCellEditable(convertRowIndexToModel(row),
convertColumnIndexToModel(column));
}
//
// Adding and removing columns in the view
//
/**
* Appends <code>aColumn to the end of the array of columns held by
* this <code>JTable's column model.
* If the column name of <code>aColumn is null,
* sets the column name of <code>aColumn to the name
* returned by <code>getModel().getColumnName().
* <p>
* To add a column to this <code>JTable to display the
* <code>modelColumn'th column of data in the model with a
* given <code>width, cellRenderer,
* and <code>cellEditor you can use:
* <pre>
*
* addColumn(new TableColumn(modelColumn, width, cellRenderer, cellEditor));
*
* </pre>
* [Any of the <code>TableColumn constructors can be used
* instead of this one.]
* The model column number is stored inside the <code>TableColumn
* and is used during rendering and editing to locate the appropriates
* data values in the model. The model column number does not change
* when columns are reordered in the view.
*
* @param aColumn the <code>TableColumn to be added
* @see #removeColumn
*/
public void addColumn(TableColumn aColumn) {
if (aColumn.getHeaderValue() == null) {
int modelColumn = aColumn.getModelIndex();
String columnName = getModel().getColumnName(modelColumn);
aColumn.setHeaderValue(columnName);
}
getColumnModel().addColumn(aColumn);
}
/**
* Removes <code>aColumn from this JTable's
* array of columns. Note: this method does not remove the column
* of data from the model; it just removes the <code>TableColumn
* that was responsible for displaying it.
*
* @param aColumn the <code>TableColumn to be removed
* @see #addColumn
*/
public void removeColumn(TableColumn aColumn) {
getColumnModel().removeColumn(aColumn);
}
/**
* Moves the column <code>column to the position currently
* occupied by the column <code>targetColumn in the view.
* The old column at <code>targetColumn is
* shifted left or right to make room.
*
* @param column the index of column to be moved
* @param targetColumn the new index of the column
*/
public void moveColumn(int column, int targetColumn) {
getColumnModel().moveColumn(column, targetColumn);
}
//
// Cover methods for various models and helper methods
//
/**
* Returns the index of the column that <code>point lies in,
* or -1 if the result is not in the range
* [0, <code>getColumnCount()-1].
*
* @param point the location of interest
* @return the index of the column that <code>point lies in,
* or -1 if the result is not in the range
* [0, <code>getColumnCount()-1]
* @see #rowAtPoint
*/
public int columnAtPoint(Point point) {
int x = point.x;
if( !getComponentOrientation().isLeftToRight() ) {
x = getWidth() - x - 1;
}
return getColumnModel().getColumnIndexAtX(x);
}
/**
* Returns the index of the row that <code>point lies in,
* or -1 if the result is not in the range
* [0, <code>getRowCount()-1].
*
* @param point the location of interest
* @return the index of the row that <code>point lies in,
* or -1 if the result is not in the range
* [0, <code>getRowCount()-1]
* @see #columnAtPoint
*/
public int rowAtPoint(Point point) {
int y = point.y;
int result = (rowModel == null) ? y/getRowHeight() : rowModel.getIndex(y);
if (result < 0) {
return -1;
}
else if (result >= getRowCount()) {
return -1;
}
else {
return result;
}
}
/**
* Returns a rectangle for the cell that lies at the intersection of
* <code>row and column.
* If <code>includeSpacing is true then the value returned
* has the full height and width of the row and column
* specified. If it is false, the returned rectangle is inset by the
* intercell spacing to return the true bounds of the rendering or
* editing component as it will be set during rendering.
* <p>
* If the column index is valid but the row index is less
* than zero the method returns a rectangle with the
* <code>y and height values set appropriately
* and the <code>x and width values both set
* to zero. In general, when either the row or column indices indicate a
* cell outside the appropriate range, the method returns a rectangle
* depicting the closest edge of the closest cell that is within
* the table's range. When both row and column indices are out
* of range the returned rectangle covers the closest
* point of the closest cell.
* <p>
* In all cases, calculations that use this method to calculate
* results along one axis will not fail because of anomalies in
* calculations along the other axis. When the cell is not valid
* the <code>includeSpacing parameter is ignored.
*
* @param row the row index where the desired cell
* is located
* @param column the column index where the desired cell
* is located in the display; this is not
* necessarily the same as the column index
* in the data model for the table; the
* {@link #convertColumnIndexToView(int)}
* method may be used to convert a data
* model column index to a display
* column index
* @param includeSpacing if false, return the true cell bounds -
* computed by subtracting the intercell
* spacing from the height and widths of
* the column and row models
*
* @return the rectangle containing the cell at location
* <code>row,column
* @see #getIntercellSpacing
*/
public Rectangle getCellRect(int row, int column, boolean includeSpacing) {
Rectangle r = new Rectangle();
boolean valid = true;
if (row < 0) {
// y = height = 0;
valid = false;
}
else if (row >= getRowCount()) {
r.y = getHeight();
valid = false;
}
else {
r.height = getRowHeight(row);
r.y = (rowModel == null) ? row * r.height : rowModel.getPosition(row);
}
if (column < 0) {
if( !getComponentOrientation().isLeftToRight() ) {
r.x = getWidth();
}
// otherwise, x = width = 0;
valid = false;
}
else if (column >= getColumnCount()) {
if( getComponentOrientation().isLeftToRight() ) {
r.x = getWidth();
}
// otherwise, x = width = 0;
valid = false;
}
else {
TableColumnModel cm = getColumnModel();
if( getComponentOrientation().isLeftToRight() ) {
for(int i = 0; i < column; i++) {
r.x += cm.getColumn(i).getWidth();
}
} else {
for(int i = cm.getColumnCount()-1; i > column; i--) {
r.x += cm.getColumn(i).getWidth();
}
}
r.width = cm.getColumn(column).getWidth();
}
if (valid && !includeSpacing) {
// Bound the margins by their associated dimensions to prevent
// returning bounds with negative dimensions.
int rm = Math.min(getRowMargin(), r.height);
int cm = Math.min(getColumnModel().getColumnMargin(), r.width);
// This is not the same as grow(), it rounds differently.
r.setBounds(r.x + cm/2, r.y + rm/2, r.width - cm, r.height - rm);
}
return r;
}
private int viewIndexForColumn(TableColumn aColumn) {
TableColumnModel cm = getColumnModel();
for (int column = 0; column < cm.getColumnCount(); column++) {
if (cm.getColumn(column) == aColumn) {
return column;
}
}
return -1;
}
/**
* Causes this table to lay out its rows and columns. Overridden so
* that columns can be resized to accommodate a change in the size of
* a containing parent.
* Resizes one or more of the columns in the table
* so that the total width of all of this <code>JTable's
* columns is equal to the width of the table.
* <p>
* Before the layout begins the method gets the
* <code>resizingColumn of the tableHeader.
* When the method is called as a result of the resizing of an enclosing window,
* the <code>resizingColumn is null. This means that resizing
* has taken place "outside" the <code>JTable and the change -
* or "delta" - should be distributed to all of the columns regardless
* of this <code>JTable's automatic resize mode.
* <p>
* If the <code>resizingColumn is not null, it is one of
* the columns in the table that has changed size rather than
* the table itself. In this case the auto-resize modes govern
* the way the extra (or deficit) space is distributed
* amongst the available columns.
* <p>
* The modes are:
* <ul>
* <li> AUTO_RESIZE_OFF: Don't automatically adjust the column's
* widths at all. Use a horizontal scrollbar to accommodate the
* columns when their sum exceeds the width of the
* <code>Viewport. If the JTable is not
* enclosed in a <code>JScrollPane this may
* leave parts of the table invisible.
* <li> AUTO_RESIZE_NEXT_COLUMN: Use just the column after the
* resizing column. This results in the "boundary" or divider
* between adjacent cells being independently adjustable.
* <li> AUTO_RESIZE_SUBSEQUENT_COLUMNS: Use all columns after the
* one being adjusted to absorb the changes. This is the
* default behavior.
* <li> AUTO_RESIZE_LAST_COLUMN: Automatically adjust the
* size of the last column only. If the bounds of the last column
* prevent the desired size from being allocated, set the
* width of the last column to the appropriate limit and make
* no further adjustments.
* <li> AUTO_RESIZE_ALL_COLUMNS: Spread the delta amongst all the columns
* in the <code>JTable, including the one that is being
* adjusted.
* </ul>
* <p>
* <b>Note: When a JTable makes adjustments
* to the widths of the columns it respects their minimum and
* maximum values absolutely. It is therefore possible that,
* even after this method is called, the total width of the columns
* is still not equal to the width of the table. When this happens
* the <code>JTable does not put itself
* in AUTO_RESIZE_OFF mode to bring up a scroll bar, or break other
* commitments of its current auto-resize mode -- instead it
* allows its bounds to be set larger (or smaller) than the total of the
* column minimum or maximum, meaning, either that there
* will not be enough room to display all of the columns, or that the
* columns will not fill the <code>JTable's bounds.
* These respectively, result in the clipping of some columns
* or an area being painted in the <code>JTable's
* background color during painting.
* <p>
* The mechanism for distributing the delta amongst the available
* columns is provided in a private method in the <code>JTable
* class:
* <pre>
* adjustSizes(long targetSize, final Resizable3 r, boolean inverse)
* </pre>
* an explanation of which is provided in the following section.
* <code>Resizable3 is a private
* interface that allows any data structure containing a collection
* of elements with a size, preferred size, maximum size and minimum size
* to have its elements manipulated by the algorithm.
*
* <H3> Distributing the delta
*
* <H4> Overview
* <P>
* Call "DELTA" the difference between the target size and the
* sum of the preferred sizes of the elements in r. The individual
* sizes are calculated by taking the original preferred
* sizes and adding a share of the DELTA - that share being based on
* how far each preferred size is from its limiting bound (minimum or
* maximum).
*
* <H4>Definition
* <P>
* Call the individual constraints min[i], max[i], and pref[i].
* <p>
* Call their respective sums: MIN, MAX, and PREF.
* <p>
* Each new size will be calculated using:
*
* <pre>
* size[i] = pref[i] + delta[i]
* </pre>
* where each individual delta[i] is calculated according to:
* <p>
* If (DELTA < 0) we are in shrink mode where:
*
* <PRE>
* DELTA
* delta[i] = ------------ * (pref[i] - min[i])
* (PREF - MIN)
* </PRE>
* If (DELTA > 0) we are in expand mode where:
*
* <PRE>
* DELTA
* delta[i] = ------------ * (max[i] - pref[i])
* (MAX - PREF)
* </PRE>
* <P>
* The overall effect is that the total size moves that same percentage,
* k, towards the total minimum or maximum and that percentage guarantees
* accommodation of the required space, DELTA.
*
* <H4>Details
* <P>
* Naive evaluation of the formulae presented here would be subject to
* the aggregated rounding errors caused by doing this operation in finite
* precision (using ints). To deal with this, the multiplying factor above,
* is constantly recalculated and this takes account of the rounding
* errors in the previous iterations. The result is an algorithm that
* produces a set of integers whose values exactly sum to the supplied
* <code>targetSize, and does so by spreading the rounding
* errors evenly over the given elements.
*
* <H4>When the MAX and MIN bounds are hit
* <P>
* When <code>targetSize is outside the [MIN, MAX] range,
* the algorithm sets all sizes to their appropriate limiting value
* (maximum or minimum).
*
*/
public void doLayout() {
TableColumn resizingColumn = getResizingColumn();
if (resizingColumn == null) {
setWidthsFromPreferredWidths(false);
}
else {
// JTable behaves like a layout manger - but one in which the
// user can come along and dictate how big one of the children
// (columns) is supposed to be.
// A column has been resized and JTable may need to distribute
// any overall delta to other columns, according to the resize mode.
int columnIndex = viewIndexForColumn(resizingColumn);
int delta = getWidth() - getColumnModel().getTotalColumnWidth();
accommodateDelta(columnIndex, delta);
delta = getWidth() - getColumnModel().getTotalColumnWidth();
// If the delta cannot be completely accomodated, then the
// resizing column will have to take any remainder. This means
// that the column is not being allowed to take the requested
// width. This happens under many circumstances: For example,
// AUTO_RESIZE_NEXT_COLUMN specifies that any delta be distributed
// to the column after the resizing column. If one were to attempt
// to resize the last column of the table, there would be no
// columns after it, and hence nowhere to distribute the delta.
// It would then be given entirely back to the resizing column,
// preventing it from changing size.
if (delta != 0) {
resizingColumn.setWidth(resizingColumn.getWidth() + delta);
}
// At this point the JTable has to work out what preferred sizes
// would have resulted in the layout the user has chosen.
// Thereafter, during window resizing etc. it has to work off
// the preferred sizes as usual - the idea being that, whatever
// the user does, everything stays in synch and things don't jump
// around.
setWidthsFromPreferredWidths(true);
}
super.doLayout();
}
private TableColumn getResizingColumn() {
return (tableHeader == null) ? null
: tableHeader.getResizingColumn();
}
/**
* Sizes the table columns to fit the available space.
* @deprecated As of Swing version 1.0.3,
* replaced by <code>doLayout().
* @see #doLayout
*/
@Deprecated
public void sizeColumnsToFit(boolean lastColumnOnly) {
int oldAutoResizeMode = autoResizeMode;
setAutoResizeMode(lastColumnOnly ? AUTO_RESIZE_LAST_COLUMN
: AUTO_RESIZE_ALL_COLUMNS);
sizeColumnsToFit(-1);
setAutoResizeMode(oldAutoResizeMode);
}
/**
* Obsolete as of Java 2 platform v1.4. Please use the
* <code>doLayout() method instead.
* @param resizingColumn the column whose resizing made this adjustment
* necessary or -1 if there is no such column
* @see #doLayout
*/
public void sizeColumnsToFit(int resizingColumn) {
if (resizingColumn == -1) {
setWidthsFromPreferredWidths(false);
}
else {
if (autoResizeMode == AUTO_RESIZE_OFF) {
TableColumn aColumn = getColumnModel().getColumn(resizingColumn);
aColumn.setPreferredWidth(aColumn.getWidth());
}
else {
int delta = getWidth() - getColumnModel().getTotalColumnWidth();
accommodateDelta(resizingColumn, delta);
setWidthsFromPreferredWidths(true);
}
}
}
private void setWidthsFromPreferredWidths(final boolean inverse) {
int totalWidth = getWidth();
int totalPreferred = getPreferredSize().width;
int target = !inverse ? totalWidth : totalPreferred;
final TableColumnModel cm = columnModel;
Resizable3 r = new Resizable3() {
public int getElementCount() { return cm.getColumnCount(); }
public int getLowerBoundAt(int i) { return cm.getColumn(i).getMinWidth(); }
public int getUpperBoundAt(int i) { return cm.getColumn(i).getMaxWidth(); }
public int getMidPointAt(int i) {
if (!inverse) {
return cm.getColumn(i).getPreferredWidth();
}
else {
return cm.getColumn(i).getWidth();
}
}
public void setSizeAt(int s, int i) {
if (!inverse) {
cm.getColumn(i).setWidth(s);
}
else {
cm.getColumn(i).setPreferredWidth(s);
}
}
};
adjustSizes(target, r, inverse);
}
// Distribute delta over columns, as indicated by the autoresize mode.
private void accommodateDelta(int resizingColumnIndex, int delta) {
int columnCount = getColumnCount();
int from = resizingColumnIndex;
int to;
// Use the mode to determine how to absorb the changes.
switch(autoResizeMode) {
case AUTO_RESIZE_NEXT_COLUMN:
from = from + 1;
to = Math.min(from + 1, columnCount); break;
case AUTO_RESIZE_SUBSEQUENT_COLUMNS:
from = from + 1;
to = columnCount; break;
case AUTO_RESIZE_LAST_COLUMN:
from = columnCount - 1;
to = from + 1; break;
case AUTO_RESIZE_ALL_COLUMNS:
from = 0;
to = columnCount; break;
default:
return;
}
final int start = from;
final int end = to;
final TableColumnModel cm = columnModel;
Resizable3 r = new Resizable3() {
public int getElementCount() { return end-start; }
public int getLowerBoundAt(int i) { return cm.getColumn(i+start).getMinWidth(); }
public int getUpperBoundAt(int i) { return cm.getColumn(i+start).getMaxWidth(); }
public int getMidPointAt(int i) { return cm.getColumn(i+start).getWidth(); }
public void setSizeAt(int s, int i) { cm.getColumn(i+start).setWidth(s); }
};
int totalWidth = 0;
for(int i = from; i < to; i++) {
TableColumn aColumn = columnModel.getColumn(i);
int input = aColumn.getWidth();
totalWidth = totalWidth + input;
}
adjustSizes(totalWidth + delta, r, false);
}
private interface Resizable2 {
public int getElementCount();
public int getLowerBoundAt(int i);
public int getUpperBoundAt(int i);
public void setSizeAt(int newSize, int i);
}
private interface Resizable3 extends Resizable2 {
public int getMidPointAt(int i);
}
private void adjustSizes(long target, final Resizable3 r, boolean inverse) {
int N = r.getElementCount();
long totalPreferred = 0;
for(int i = 0; i < N; i++) {
totalPreferred += r.getMidPointAt(i);
}
Resizable2 s;
if ((target < totalPreferred) == !inverse) {
s = new Resizable2() {
public int getElementCount() { return r.getElementCount(); }
public int getLowerBoundAt(int i) { return r.getLowerBoundAt(i); }
public int getUpperBoundAt(int i) { return r.getMidPointAt(i); }
public void setSizeAt(int newSize, int i) { r.setSizeAt(newSize, i); }
};
}
else {
s = new Resizable2() {
public int getElementCount() { return r.getElementCount(); }
public int getLowerBoundAt(int i) { return r.getMidPointAt(i); }
public int getUpperBoundAt(int i) { return r.getUpperBoundAt(i); }
public void setSizeAt(int newSize, int i) { r.setSizeAt(newSize, i); }
};
}
adjustSizes(target, s, !inverse);
}
private void adjustSizes(long target, Resizable2 r, boolean limitToRange) {
long totalLowerBound = 0;
long totalUpperBound = 0;
for(int i = 0; i < r.getElementCount(); i++) {
totalLowerBound += r.getLowerBoundAt(i);
totalUpperBound += r.getUpperBoundAt(i);
}
if (limitToRange) {
target = Math.min(Math.max(totalLowerBound, target), totalUpperBound);
}
for(int i = 0; i < r.getElementCount(); i++) {
int lowerBound = r.getLowerBoundAt(i);
int upperBound = r.getUpperBoundAt(i);
// Check for zero. This happens when the distribution of the delta
// finishes early due to a series of "fixed" entries at the end.
// In this case, lowerBound == upperBound, for all subsequent terms.
int newSize;
if (totalLowerBound == totalUpperBound) {
newSize = lowerBound;
}
else {
double f = (double)(target - totalLowerBound)/(totalUpperBound - totalLowerBound);
newSize = (int)Math.round(lowerBound+f*(upperBound - lowerBound));
// We'd need to round manually in an all integer version.
// size[i] = (int)(((totalUpperBound - target) * lowerBound +
// (target - totalLowerBound) * upperBound)/(totalUpperBound-totalLowerBound));
}
r.setSizeAt(newSize, i);
target -= newSize;
totalLowerBound -= lowerBound;
totalUpperBound -= upperBound;
}
}
/**
* Overrides <code>JComponent's getToolTipText
* method in order to allow the renderer's tips to be used
* if it has text set.
* <p>
* <b>Note: For JTable to properly display
* tooltips of its renderers
* <code>JTable must be a registered component with the
* <code>ToolTipManager.
* This is done automatically in <code>initializeLocalVars,
* but if at a later point <code>JTable is told
* <code>setToolTipText(null) it will unregister the table
* component, and no tips from renderers will display anymore.
*
* @see JComponent#getToolTipText
*/
public String getToolTipText(MouseEvent event) {
String tip = null;
Point p = event.getPoint();
// Locate the renderer under the event location
int hitColumnIndex = columnAtPoint(p);
int hitRowIndex = rowAtPoint(p);
if ((hitColumnIndex != -1) && (hitRowIndex != -1)) {
TableCellRenderer renderer = getCellRenderer(hitRowIndex, hitColumnIndex);
Component component = prepareRenderer(renderer, hitRowIndex, hitColumnIndex);
// Now have to see if the component is a JComponent before
// getting the tip
if (component instanceof JComponent) {
// Convert the event to the renderer's coordinate system
Rectangle cellRect = getCellRect(hitRowIndex, hitColumnIndex, false);
p.translate(-cellRect.x, -cellRect.y);
MouseEvent newEvent = new MouseEvent(component, event.getID(),
event.getWhen(), event.getModifiers(),
p.x, p.y,
event.getXOnScreen(),
event.getYOnScreen(),
event.getClickCount(),
event.isPopupTrigger(),
MouseEvent.NOBUTTON);
tip = ((JComponent)component).getToolTipText(newEvent);
}
}
// No tip from the renderer get our own tip
if (tip == null)
tip = getToolTipText();
return tip;
}
//
// Editing Support
//
/**
* Sets whether editors in this JTable get the keyboard focus
* when an editor is activated as a result of the JTable
* forwarding keyboard events for a cell.
* By default, this property is false, and the JTable
* retains the focus unless the cell is clicked.
*
* @param surrendersFocusOnKeystroke true if the editor should get the focus
* when keystrokes cause the editor to be
* activated
*
*
* @see #getSurrendersFocusOnKeystroke
* @since 1.4
*/
public void setSurrendersFocusOnKeystroke(boolean surrendersFocusOnKeystroke) {
this.surrendersFocusOnKeystroke = surrendersFocusOnKeystroke;
}
/**
* Returns true if the editor should get the focus
* when keystrokes cause the editor to be activated
*
* @return true if the editor should get the focus
* when keystrokes cause the editor to be
* activated
*
* @see #setSurrendersFocusOnKeystroke
* @since 1.4
*/
public boolean getSurrendersFocusOnKeystroke() {
return surrendersFocusOnKeystroke;
}
/**
* Programmatically starts editing the cell at <code>row and
* <code>column, if those indices are in the valid range, and
* the cell at those indices is editable.
* Note that this is a convenience method for
* <code>editCellAt(int, int, null).
*
* @param row the row to be edited
* @param column the column to be edited
* @return false if for any reason the cell cannot be edited,
* or if the indices are invalid
*/
public boolean editCellAt(int row, int column) {
return editCellAt(row, column, null);
}
/**
* Programmatically starts editing the cell at <code>row and
* <code>column, if those indices are in the valid range, and
* the cell at those indices is editable.
* To prevent the <code>JTable from
* editing a particular table, column or cell value, return false from
* the <code>isCellEditable method in the TableModel
* interface.
*
* @param row the row to be edited
* @param column the column to be edited
* @param e event to pass into <code>shouldSelectCell;
* note that as of Java 2 platform v1.2, the call to
* <code>shouldSelectCell is no longer made
* @return false if for any reason the cell cannot be edited,
* or if the indices are invalid
*/
public boolean editCellAt(int row, int column, EventObject e){
if (cellEditor != null && !cellEditor.stopCellEditing()) {
return false;
}
if (row < 0 || row >= getRowCount() ||
column < 0 || column >= getColumnCount()) {
return false;
}
if (!isCellEditable(row, column))
return false;
if (editorRemover == null) {
KeyboardFocusManager fm =
KeyboardFocusManager.getCurrentKeyboardFocusManager();
editorRemover = new CellEditorRemover(fm);
fm.addPropertyChangeListener("permanentFocusOwner", editorRemover);
}
TableCellEditor editor = getCellEditor(row, column);
if (editor != null && editor.isCellEditable(e)) {
editorComp = prepareEditor(editor, row, column);
if (editorComp == null) {
removeEditor();
return false;
}
editorComp.setBounds(getCellRect(row, column, false));
add(editorComp);
editorComp.validate();
editorComp.repaint();
setCellEditor(editor);
setEditingRow(row);
setEditingColumn(column);
editor.addCellEditorListener(this);
return true;
}
return false;
}
/**
* Returns true if a cell is being edited.
*
* @return true if the table is editing a cell
* @see #editingColumn
* @see #editingRow
*/
public boolean isEditing() {
return cellEditor != null;
}
/**
* Returns the component that is handling the editing session.
* If nothing is being edited, returns null.
*
* @return Component handling editing session
*/
public Component getEditorComponent() {
return editorComp;
}
/**
* Returns the index of the column that contains the cell currently
* being edited. If nothing is being edited, returns -1.
*
* @return the index of the column that contains the cell currently
* being edited; returns -1 if nothing being edited
* @see #editingRow
*/
public int getEditingColumn() {
return editingColumn;
}
/**
* Returns the index of the row that contains the cell currently
* being edited. If nothing is being edited, returns -1.
*
* @return the index of the row that contains the cell currently
* being edited; returns -1 if nothing being edited
* @see #editingColumn
*/
public int getEditingRow() {
return editingRow;
}
//
// Managing TableUI
//
/**
* Returns the L&F object that renders this component.
*
* @return the <code>TableUI object that renders this component
*/
public TableUI getUI() {
return (TableUI)ui;
}
/**
* Sets the L&F object that renders this component and repaints.
*
* @param ui the TableUI L&F object
* @see UIDefaults#getUI
* @beaninfo
* bound: true
* hidden: true
* attribute: visualUpdate true
* description: The UI object that implements the Component's LookAndFeel.
*/
public void setUI(TableUI ui) {
if (this.ui != ui) {
super.setUI(ui);
repaint();
}
}
/**
* Notification from the <code>UIManager that the L&F has changed.
* Replaces the current UI object with the latest version from the
* <code>UIManager.
*
* @see JComponent#updateUI
*/
public void updateUI() {
// Update the UIs of the cell renderers, cell editors and header renderers.
TableColumnModel cm = getColumnModel();
for(int column = 0; column < cm.getColumnCount(); column++) {
TableColumn aColumn = cm.getColumn(column);
SwingUtilities.updateRendererOrEditorUI(aColumn.getCellRenderer());
SwingUtilities.updateRendererOrEditorUI(aColumn.getCellEditor());
SwingUtilities.updateRendererOrEditorUI(aColumn.getHeaderRenderer());
}
// Update the UIs of all the default renderers.
Enumeration defaultRenderers = defaultRenderersByColumnClass.elements();
while (defaultRenderers.hasMoreElements()) {
SwingUtilities.updateRendererOrEditorUI(defaultRenderers.nextElement());
}
// Update the UIs of all the default editors.
Enumeration defaultEditors = defaultEditorsByColumnClass.elements();
while (defaultEditors.hasMoreElements()) {
SwingUtilities.updateRendererOrEditorUI(defaultEditors.nextElement());
}
// Update the UI of the table header
if (tableHeader != null && tableHeader.getParent() == null) {
tableHeader.updateUI();
}
// Update UI applied to parent ScrollPane
configureEnclosingScrollPaneUI();
setUI((TableUI)UIManager.getUI(this));
}
/**
* Returns the suffix used to construct the name of the L&F class used to
* render this component.
*
* @return the string "TableUI"
* @see JComponent#getUIClassID
* @see UIDefaults#getUI
*/
public String getUIClassID() {
return uiClassID;
}
//
// Managing models
//
/**
* Sets the data model for this table to <code>newModel and registers
* with it for listener notifications from the new data model.
*
* @param dataModel the new data source for this table
* @exception IllegalArgumentException if <code>newModel is null
* @see #getModel
* @beaninfo
* bound: true
* description: The model that is the source of the data for this view.
*/
public void setModel(TableModel dataModel) {
if (dataModel == null) {
throw new IllegalArgumentException("Cannot set a null TableModel");
}
if (this.dataModel != dataModel) {
TableModel old = this.dataModel;
if (old != null) {
old.removeTableModelListener(this);
}
this.dataModel = dataModel;
dataModel.addTableModelListener(this);
tableChanged(new TableModelEvent(dataModel, TableModelEvent.HEADER_ROW));
firePropertyChange("model", old, dataModel);
if (getAutoCreateRowSorter()) {
setRowSorter(new TableRowSorter<TableModel>(dataModel));
}
}
}
/**
* Returns the <code>TableModel that provides the data displayed by this
* <code>JTable.
*
* @return the <code>TableModel that provides the data displayed by this JTable
* @see #setModel
*/
public TableModel getModel() {
return dataModel;
}
/**
* Sets the column model for this table to <code>newModel and registers
* for listener notifications from the new column model. Also sets
* the column model of the <code>JTableHeader to columnModel.
*
* @param columnModel the new data source for this table
* @exception IllegalArgumentException if <code>columnModel is null
* @see #getColumnModel
* @beaninfo
* bound: true
* description: The object governing the way columns appear in the view.
*/
public void setColumnModel(TableColumnModel columnModel) {
if (columnModel == null) {
throw new IllegalArgumentException("Cannot set a null ColumnModel");
}
TableColumnModel old = this.columnModel;
if (columnModel != old) {
if (old != null) {
old.removeColumnModelListener(this);
}
this.columnModel = columnModel;
columnModel.addColumnModelListener(this);
// Set the column model of the header as well.
if (tableHeader != null) {
tableHeader.setColumnModel(columnModel);
}
firePropertyChange("columnModel", old, columnModel);
resizeAndRepaint();
}
}
/**
* Returns the <code>TableColumnModel that contains all column information
* of this table.
*
* @return the object that provides the column state of the table
* @see #setColumnModel
*/
public TableColumnModel getColumnModel() {
return columnModel;
}
/**
* Sets the row selection model for this table to <code>newModel
* and registers for listener notifications from the new selection model.
*
* @param newModel the new selection model
* @exception IllegalArgumentException if <code>newModel is null
* @see #getSelectionModel
* @beaninfo
* bound: true
* description: The selection model for rows.
*/
public void setSelectionModel(ListSelectionModel newModel) {
if (newModel == null) {
throw new IllegalArgumentException("Cannot set a null SelectionModel");
}
ListSelectionModel oldModel = selectionModel;
if (newModel != oldModel) {
if (oldModel != null) {
oldModel.removeListSelectionListener(this);
}
selectionModel = newModel;
newModel.addListSelectionListener(this);
firePropertyChange("selectionModel", oldModel, newModel);
repaint();
}
}
/**
* Returns the <code>ListSelectionModel that is used to maintain row
* selection state.
*
* @return the object that provides row selection state, <code>null
* if row selection is not allowed
* @see #setSelectionModel
*/
public ListSelectionModel getSelectionModel() {
return selectionModel;
}
//
// RowSorterListener
//
/**
* <code>RowSorterListener notification that the
* <code>RowSorter has changed in some way.
*
* @param e the <code>RowSorterEvent describing the change
* @throws NullPointerException if <code>e is null
* @since 1.6
*/
public void sorterChanged(RowSorterEvent e) {
if (e.getType() == RowSorterEvent.Type.SORT_ORDER_CHANGED) {
JTableHeader header = getTableHeader();
if (header != null) {
header.repaint();
}
}
else if (e.getType() == RowSorterEvent.Type.SORTED) {
sorterChanged = true;
if (!ignoreSortChange) {
sortedTableChanged(e, null);
}
}
}
/**
* SortManager provides support for managing the selection and variable
* row heights when sorting is enabled. This information is encapsulated
* into a class to avoid bulking up JTable.
*/
private final class SortManager {
RowSorter<? extends TableModel> sorter;
// Selection, in terms of the model. This is lazily created
// as needed.
private ListSelectionModel modelSelection;
private int modelLeadIndex;
// Set to true while in the process of changing the selection.
// If this is true the selection change is ignored.
private boolean syncingSelection;
// Temporary cache of selection, in terms of model. This is only used
// if we don't need the full weight of modelSelection.
private int[] lastModelSelection;
// Heights of the rows in terms of the model.
private SizeSequence modelRowSizes;
SortManager(RowSorter<? extends TableModel> sorter) {
this.sorter = sorter;
sorter.addRowSorterListener(JTable.this);
}
/**
* Disposes any resources used by this SortManager.
*/
public void dispose() {
if (sorter != null) {
sorter.removeRowSorterListener(JTable.this);
}
}
/**
* Sets the height for a row at a specified index.
*/
public void setViewRowHeight(int viewIndex, int rowHeight) {
if (modelRowSizes == null) {
modelRowSizes = new SizeSequence(getModel().getRowCount(),
getRowHeight());
}
modelRowSizes.setSize(convertRowIndexToModel(viewIndex),rowHeight);
}
/**
* Invoked when the underlying model has completely changed.
*/
public void allChanged() {
modelLeadIndex = -1;
modelSelection = null;
modelRowSizes = null;
}
/**
* Invoked when the selection, on the view, has changed.
*/
public void viewSelectionChanged(ListSelectionEvent e) {
if (!syncingSelection && modelSelection != null) {
modelSelection = null;
}
}
/**
* Invoked when either the table model has changed, or the RowSorter
* has changed. This is invoked prior to notifying the sorter of the
* change.
*/
public void prepareForChange(RowSorterEvent sortEvent,
ModelChange change) {
if (getUpdateSelectionOnSort()) {
cacheSelection(sortEvent, change);
}
}
/**
* Updates the internal cache of the selection based on the change.
*/
private void cacheSelection(RowSorterEvent sortEvent,
ModelChange change) {
if (sortEvent != null) {
// sort order changed. If modelSelection is null and filtering
// is enabled we need to cache the selection in terms of the
// underlying model, this will allow us to correctly restore
// the selection even if rows are filtered out.
if (modelSelection == null &&
sorter.getViewRowCount() != getModel().getRowCount()) {
modelSelection = new DefaultListSelectionModel();
ListSelectionModel viewSelection = getSelectionModel();
int min = viewSelection.getMinSelectionIndex();
int max = viewSelection.getMaxSelectionIndex();
int modelIndex;
for (int viewIndex = min; viewIndex <= max; viewIndex++) {
if (viewSelection.isSelectedIndex(viewIndex)) {
modelIndex = convertRowIndexToModel(
sortEvent, viewIndex);
if (modelIndex != -1) {
modelSelection.addSelectionInterval(
modelIndex, modelIndex);
}
}
}
modelIndex = convertRowIndexToModel(sortEvent,
viewSelection.getLeadSelectionIndex());
SwingUtilities2.setLeadAnchorWithoutSelection(
modelSelection, modelIndex, modelIndex);
} else if (modelSelection == null) {
// Sorting changed, haven't cached selection in terms
// of model and no filtering. Temporarily cache selection.
cacheModelSelection(sortEvent);
}
} else if (change.allRowsChanged) {
// All the rows have changed, chuck any cached selection.
modelSelection = null;
} else if (modelSelection != null) {
// Table changed, reflect changes in cached selection model.
switch(change.type) {
case TableModelEvent.DELETE:
modelSelection.removeIndexInterval(change.startModelIndex,
change.endModelIndex);
break;
case TableModelEvent.INSERT:
modelSelection.insertIndexInterval(change.startModelIndex,
change.length,
true);
break;
default:
break;
}
} else {
// table changed, but haven't cached rows, temporarily
// cache them.
cacheModelSelection(null);
}
}
private void cacheModelSelection(RowSorterEvent sortEvent) {
lastModelSelection = convertSelectionToModel(sortEvent);
modelLeadIndex = convertRowIndexToModel(sortEvent,
selectionModel.getLeadSelectionIndex());
}
/**
* Inovked when either the table has changed or the sorter has changed
* and after the sorter has been notified. If necessary this will
* reapply the selection and variable row heights.
*/
public void processChange(RowSorterEvent sortEvent,
ModelChange change,
boolean sorterChanged) {
if (change != null) {
if (change.allRowsChanged) {
modelRowSizes = null;
rowModel = null;
} else if (modelRowSizes != null) {
if (change.type == TableModelEvent.INSERT) {
modelRowSizes.insertEntries(change.startModelIndex,
change.endModelIndex -
change.startModelIndex + 1,
getRowHeight());
} else if (change.type == TableModelEvent.DELETE) {
modelRowSizes.removeEntries(change.startModelIndex,
change.endModelIndex -
change.startModelIndex +1 );
}
}
}
if (sorterChanged) {
setViewRowHeightsFromModel();
restoreSelection(change);
}
}
/**
* Resets the variable row heights in terms of the view from
* that of the variable row heights in terms of the model.
*/
private void setViewRowHeightsFromModel() {
if (modelRowSizes != null) {
rowModel.setSizes(getRowCount(), getRowHeight());
for (int viewIndex = getRowCount() - 1; viewIndex >= 0;
viewIndex--) {
int modelIndex = convertRowIndexToModel(viewIndex);
rowModel.setSize(viewIndex,
modelRowSizes.getSize(modelIndex));
}
}
}
/**
* Restores the selection from that in terms of the model.
*/
private void restoreSelection(ModelChange change) {
syncingSelection = true;
if (lastModelSelection != null) {
restoreSortingSelection(lastModelSelection,
modelLeadIndex, change);
lastModelSelection = null;
} else if (modelSelection != null) {
ListSelectionModel viewSelection = getSelectionModel();
viewSelection.setValueIsAdjusting(true);
viewSelection.clearSelection();
int min = modelSelection.getMinSelectionIndex();
int max = modelSelection.getMaxSelectionIndex();
int viewIndex;
for (int modelIndex = min; modelIndex <= max; modelIndex++) {
if (modelSelection.isSelectedIndex(modelIndex)) {
viewIndex = convertRowIndexToView(modelIndex);
if (viewIndex != -1) {
viewSelection.addSelectionInterval(viewIndex,
viewIndex);
}
}
}
// Restore the lead
int viewLeadIndex = modelSelection.getLeadSelectionIndex();
if (viewLeadIndex != -1) {
viewLeadIndex = convertRowIndexToView(viewLeadIndex);
}
SwingUtilities2.setLeadAnchorWithoutSelection(
viewSelection, viewLeadIndex, viewLeadIndex);
viewSelection.setValueIsAdjusting(false);
}
syncingSelection = false;
}
}
/**
* ModelChange is used when sorting to restore state, it corresponds
* to data from a TableModelEvent. The values are precalculated as
* they are used extensively.
*/
private final class ModelChange {
// Starting index of the change, in terms of the model
int startModelIndex;
// Ending index of the change, in terms of the model
int endModelIndex;
// Type of change
int type;
// Number of rows in the model
int modelRowCount;
// The event that triggered this.
TableModelEvent event;
// Length of the change (end - start + 1)
int length;
// True if the event indicates all the contents have changed
boolean allRowsChanged;
ModelChange(TableModelEvent e) {
startModelIndex = Math.max(0, e.getFirstRow());
endModelIndex = e.getLastRow();
modelRowCount = getModel().getRowCount();
if (endModelIndex < 0) {
endModelIndex = Math.max(0, modelRowCount - 1);
}
length = endModelIndex - startModelIndex + 1;
type = e.getType();
event = e;
allRowsChanged = (e.getLastRow() == Integer.MAX_VALUE);
}
}
/**
* Invoked when <code>sorterChanged is invoked, or
* when <code>tableChanged is invoked and sorting is enabled.
*/
private void sortedTableChanged(RowSorterEvent sortedEvent,
TableModelEvent e) {
int editingModelIndex = -1;
ModelChange change = (e != null) ? new ModelChange(e) : null;
if ((change == null || !change.allRowsChanged) &&
this.editingRow != -1) {
editingModelIndex = convertRowIndexToModel(sortedEvent,
this.editingRow);
}
sortManager.prepareForChange(sortedEvent, change);
if (e != null) {
if (change.type == TableModelEvent.UPDATE) {
repaintSortedRows(change);
}
notifySorter(change);
if (change.type != TableModelEvent.UPDATE) {
// If the Sorter is unsorted we will not have received
// notification, force treating insert/delete as a change.
sorterChanged = true;
}
}
else {
sorterChanged = true;
}
sortManager.processChange(sortedEvent, change, sorterChanged);
if (sorterChanged) {
// Update the editing row
if (this.editingRow != -1) {
int newIndex = (editingModelIndex == -1) ? -1 :
convertRowIndexToView(editingModelIndex,change);
restoreSortingEditingRow(newIndex);
}
// And handle the appropriate repainting.
if (e == null || change.type != TableModelEvent.UPDATE) {
resizeAndRepaint();
}
}
// Check if lead/anchor need to be reset.
if (change != null && change.allRowsChanged) {
clearSelectionAndLeadAnchor();
resizeAndRepaint();
}
}
/**
* Repaints the sort of sorted rows in response to a TableModelEvent.
*/
private void repaintSortedRows(ModelChange change) {
if (change.startModelIndex > change.endModelIndex ||
change.startModelIndex + 10 < change.endModelIndex) {
// Too much has changed, punt
repaint();
return;
}
int eventColumn = change.event.getColumn();
int columnViewIndex = eventColumn;
if (columnViewIndex == TableModelEvent.ALL_COLUMNS) {
columnViewIndex = 0;
}
else {
columnViewIndex = convertColumnIndexToView(columnViewIndex);
if (columnViewIndex == -1) {
return;
}
}
int modelIndex = change.startModelIndex;
while (modelIndex <= change.endModelIndex) {
int viewIndex = convertRowIndexToView(modelIndex++);
if (viewIndex != -1) {
Rectangle dirty = getCellRect(viewIndex, columnViewIndex,
false);
int x = dirty.x;
int w = dirty.width;
if (eventColumn == TableModelEvent.ALL_COLUMNS) {
x = 0;
w = getWidth();
}
repaint(x, dirty.y, w, dirty.height);
}
}
}
/**
* Restores the selection after a model event/sort order changes.
* All coordinates are in terms of the model.
*/
private void restoreSortingSelection(int[] selection, int lead,
ModelChange change) {
// Convert the selection from model to view
for (int i = selection.length - 1; i >= 0; i--) {
selection[i] = convertRowIndexToView(selection[i], change);
}
lead = convertRowIndexToView(lead, change);
// Check for the common case of no change in selection for 1 row
if (selection.length == 0 ||
(selection.length == 1 && selection[0] == getSelectedRow())) {
return;
}
// And apply the new selection
selectionModel.setValueIsAdjusting(true);
selectionModel.clearSelection();
for (int i = selection.length - 1; i >= 0; i--) {
if (selection[i] != -1) {
selectionModel.addSelectionInterval(selection[i],
selection[i]);
}
}
SwingUtilities2.setLeadAnchorWithoutSelection(
selectionModel, lead, lead);
selectionModel.setValueIsAdjusting(false);
}
/**
* Restores the editing row after a model event/sort order change.
*
* @param editingRow new index of the editingRow, in terms of the view
*/
private void restoreSortingEditingRow(int editingRow) {
if (editingRow == -1) {
// Editing row no longer being shown, cancel editing
TableCellEditor editor = getCellEditor();
if (editor != null) {
// First try and cancel
editor.cancelCellEditing();
if (getCellEditor() != null) {
// CellEditor didn't cede control, forcefully
// remove it
removeEditor();
}
}
}
else {
// Repositioning handled in BasicTableUI
this.editingRow = editingRow;
repaint();
}
}
/**
* Notifies the sorter of a change in the underlying model.
*/
private void notifySorter(ModelChange change) {
try {
ignoreSortChange = true;
sorterChanged = false;
switch(change.type) {
case TableModelEvent.UPDATE:
if (change.event.getLastRow() == Integer.MAX_VALUE) {
sortManager.sorter.allRowsChanged();
} else if (change.event.getColumn() ==
TableModelEvent.ALL_COLUMNS) {
sortManager.sorter.rowsUpdated(change.startModelIndex,
change.endModelIndex);
} else {
sortManager.sorter.rowsUpdated(change.startModelIndex,
change.endModelIndex,
change.event.getColumn());
}
break;
case TableModelEvent.INSERT:
sortManager.sorter.rowsInserted(change.startModelIndex,
change.endModelIndex);
break;
case TableModelEvent.DELETE:
sortManager.sorter.rowsDeleted(change.startModelIndex,
change.endModelIndex);
break;
}
} finally {
ignoreSortChange = false;
}
}
/**
* Converts a model index to view index. This is called when the
* sorter or model changes and sorting is enabled.
*
* @param change describes the TableModelEvent that initiated the change;
* will be null if called as the result of a sort
*/
private int convertRowIndexToView(int modelIndex, ModelChange change) {
if (modelIndex < 0) {
return -1;
}
if (change != null && modelIndex >= change.startModelIndex) {
if (change.type == TableModelEvent.INSERT) {
if (modelIndex + change.length >= change.modelRowCount) {
return -1;
}
return sortManager.sorter.convertRowIndexToView(
modelIndex + change.length);
}
else if (change.type == TableModelEvent.DELETE) {
if (modelIndex <= change.endModelIndex) {
// deleted
return -1;
}
else {
if (modelIndex - change.length >= change.modelRowCount) {
return -1;
}
return sortManager.sorter.convertRowIndexToView(
modelIndex - change.length);
}
}
// else, updated
}
if (modelIndex >= getModel().getRowCount()) {
return -1;
}
return sortManager.sorter.convertRowIndexToView(modelIndex);
}
/**
* Converts the selection to model coordinates. This is used when
* the model changes or the sorter changes.
*/
private int[] convertSelectionToModel(RowSorterEvent e) {
int[] selection = getSelectedRows();
for (int i = selection.length - 1; i >= 0; i--) {
selection[i] = convertRowIndexToModel(e, selection[i]);
}
return selection;
}
private int convertRowIndexToModel(RowSorterEvent e, int viewIndex) {
if (e != null) {
if (e.getPreviousRowCount() == 0) {
return viewIndex;
}
// range checking handled by RowSorterEvent
return e.convertPreviousRowIndexToModel(viewIndex);
}
// Make sure the viewIndex is valid
if (viewIndex < 0 || viewIndex >= getRowCount()) {
return -1;
}
return convertRowIndexToModel(viewIndex);
}
//
// Implementing TableModelListener interface
//
/**
* Invoked when this table's <code>TableModel generates
* a <code>TableModelEvent.
* The <code>TableModelEvent should be constructed in the
* coordinate system of the model; the appropriate mapping to the
* view coordinate system is performed by this <code>JTable
* when it receives the event.
* <p>
* Application code will not use these methods explicitly, they
* are used internally by <code>JTable.
* <p>
* Note that as of 1.3, this method clears the selection, if any.
*/
public void tableChanged(TableModelEvent e) {
if (e == null || e.getFirstRow() == TableModelEvent.HEADER_ROW) {
// The whole thing changed
clearSelectionAndLeadAnchor();
rowModel = null;
if (sortManager != null) {
try {
ignoreSortChange = true;
sortManager.sorter.modelStructureChanged();
} finally {
ignoreSortChange = false;
}
sortManager.allChanged();
}
if (getAutoCreateColumnsFromModel()) {
// This will effect invalidation of the JTable and JTableHeader.
createDefaultColumnsFromModel();
return;
}
resizeAndRepaint();
return;
}
if (sortManager != null) {
sortedTableChanged(null, e);
return;
}
// The totalRowHeight calculated below will be incorrect if
// there are variable height rows. Repaint the visible region,
// but don't return as a revalidate may be necessary as well.
if (rowModel != null) {
repaint();
}
if (e.getType() == TableModelEvent.INSERT) {
tableRowsInserted(e);
return;
}
if (e.getType() == TableModelEvent.DELETE) {
tableRowsDeleted(e);
return;
}
int modelColumn = e.getColumn();
int start = e.getFirstRow();
int end = e.getLastRow();
Rectangle dirtyRegion;
if (modelColumn == TableModelEvent.ALL_COLUMNS) {
// 1 or more rows changed
dirtyRegion = new Rectangle(0, start * getRowHeight(),
getColumnModel().getTotalColumnWidth(), 0);
}
else {
// A cell or column of cells has changed.
// Unlike the rest of the methods in the JTable, the TableModelEvent
// uses the coordinate system of the model instead of the view.
// This is the only place in the JTable where this "reverse mapping"
// is used.
int column = convertColumnIndexToView(modelColumn);
dirtyRegion = getCellRect(start, column, false);
}
// Now adjust the height of the dirty region according to the value of "end".
// Check for Integer.MAX_VALUE as this will cause an overflow.
if (end != Integer.MAX_VALUE) {
dirtyRegion.height = (end-start+1)*getRowHeight();
repaint(dirtyRegion.x, dirtyRegion.y, dirtyRegion.width, dirtyRegion.height);
}
// In fact, if the end is Integer.MAX_VALUE we need to revalidate anyway
// because the scrollbar may need repainting.
else {
clearSelectionAndLeadAnchor();
resizeAndRepaint();
rowModel = null;
}
}
/*
* Invoked when rows have been inserted into the table.
* <p>
* Application code will not use these methods explicitly, they
* are used internally by JTable.
*
* @param e the TableModelEvent encapsulating the insertion
*/
private void tableRowsInserted(TableModelEvent e) {
int start = e.getFirstRow();
int end = e.getLastRow();
if (start < 0) {
start = 0;
}
if (end < 0) {
end = getRowCount()-1;
}
// Adjust the selection to account for the new rows.
int length = end - start + 1;
selectionModel.insertIndexInterval(start, length, true);
// If we have variable height rows, adjust the row model.
if (rowModel != null) {
rowModel.insertEntries(start, length, getRowHeight());
}
int rh = getRowHeight() ;
Rectangle drawRect = new Rectangle(0, start * rh,
getColumnModel().getTotalColumnWidth(),
(getRowCount()-start) * rh);
revalidate();
// PENDING(milne) revalidate calls repaint() if parent is a ScrollPane
// repaint still required in the unusual case where there is no ScrollPane
repaint(drawRect);
}
/*
* Invoked when rows have been removed from the table.
* <p>
* Application code will not use these methods explicitly, they
* are used internally by JTable.
*
* @param e the TableModelEvent encapsulating the deletion
*/
private void tableRowsDeleted(TableModelEvent e) {
int start = e.getFirstRow();
int end = e.getLastRow();
if (start < 0) {
start = 0;
}
if (end < 0) {
end = getRowCount()-1;
}
int deletedCount = end - start + 1;
int previousRowCount = getRowCount() + deletedCount;
// Adjust the selection to account for the new rows
selectionModel.removeIndexInterval(start, end);
// If we have variable height rows, adjust the row model.
if (rowModel != null) {
rowModel.removeEntries(start, deletedCount);
}
int rh = getRowHeight();
Rectangle drawRect = new Rectangle(0, start * rh,
getColumnModel().getTotalColumnWidth(),
(previousRowCount - start) * rh);
revalidate();
// PENDING(milne) revalidate calls repaint() if parent is a ScrollPane
// repaint still required in the unusual case where there is no ScrollPane
repaint(drawRect);
}
//
// Implementing TableColumnModelListener interface
//
/**
* Invoked when a column is added to the table column model.
* <p>
* Application code will not use these methods explicitly, they
* are used internally by JTable.
*
* @see TableColumnModelListener
*/
public void columnAdded(TableColumnModelEvent e) {
// If I'm currently editing, then I should stop editing
if (isEditing()) {
removeEditor();
}
resizeAndRepaint();
}
/**
* Invoked when a column is removed from the table column model.
* <p>
* Application code will not use these methods explicitly, they
* are used internally by JTable.
*
* @see TableColumnModelListener
*/
public void columnRemoved(TableColumnModelEvent e) {
// If I'm currently editing, then I should stop editing
if (isEditing()) {
removeEditor();
}
resizeAndRepaint();
}
/**
* Invoked when a column is repositioned. If a cell is being
* edited, then editing is stopped and the cell is redrawn.
* <p>
* Application code will not use these methods explicitly, they
* are used internally by JTable.
*
* @param e the event received
* @see TableColumnModelListener
*/
public void columnMoved(TableColumnModelEvent e) {
if (isEditing() && !getCellEditor().stopCellEditing()) {
getCellEditor().cancelCellEditing();
}
repaint();
}
/**
* Invoked when a column is moved due to a margin change.
* If a cell is being edited, then editing is stopped and the cell
* is redrawn.
* <p>
* Application code will not use these methods explicitly, they
* are used internally by JTable.
*
* @param e the event received
* @see TableColumnModelListener
*/
public void columnMarginChanged(ChangeEvent e) {
if (isEditing() && !getCellEditor().stopCellEditing()) {
getCellEditor().cancelCellEditing();
}
TableColumn resizingColumn = getResizingColumn();
// Need to do this here, before the parent's
// layout manager calls getPreferredSize().
if (resizingColumn != null && autoResizeMode == AUTO_RESIZE_OFF) {
resizingColumn.setPreferredWidth(resizingColumn.getWidth());
}
resizeAndRepaint();
}
private int limit(int i, int a, int b) {
return Math.min(b, Math.max(i, a));
}
/**
* Invoked when the selection model of the <code>TableColumnModel
* is changed.
* <p>
* Application code will not use these methods explicitly, they
* are used internally by JTable.
*
* @param e the event received
* @see TableColumnModelListener
*/
public void columnSelectionChanged(ListSelectionEvent e) {
boolean isAdjusting = e.getValueIsAdjusting();
if (columnSelectionAdjusting && !isAdjusting) {
// The assumption is that when the model is no longer adjusting
// we will have already gotten all the changes, and therefore
// don't need to do an additional paint.
columnSelectionAdjusting = false;
return;
}
columnSelectionAdjusting = isAdjusting;
// The getCellRect() call will fail unless there is at least one row.
if (getRowCount() <= 0 || getColumnCount() <= 0) {
return;
}
int firstIndex = limit(e.getFirstIndex(), 0, getColumnCount()-1);
int lastIndex = limit(e.getLastIndex(), 0, getColumnCount()-1);
int minRow = 0;
int maxRow = getRowCount() - 1;
if (getRowSelectionAllowed()) {
minRow = selectionModel.getMinSelectionIndex();
maxRow = selectionModel.getMaxSelectionIndex();
int leadRow = getAdjustedIndex(selectionModel.getLeadSelectionIndex(), true);
if (minRow == -1 || maxRow == -1) {
if (leadRow == -1) {
// nothing to repaint, return
return;
}
// only thing to repaint is the lead
minRow = maxRow = leadRow;
} else {
// We need to consider more than just the range between
// the min and max selected index. The lead row, which could
// be outside this range, should be considered also.
if (leadRow != -1) {
minRow = Math.min(minRow, leadRow);
maxRow = Math.max(maxRow, leadRow);
}
}
}
Rectangle firstColumnRect = getCellRect(minRow, firstIndex, false);
Rectangle lastColumnRect = getCellRect(maxRow, lastIndex, false);
Rectangle dirtyRegion = firstColumnRect.union(lastColumnRect);
repaint(dirtyRegion);
}
//
// Implementing ListSelectionListener interface
//
/**
* Invoked when the row selection changes -- repaints to show the new
* selection.
* <p>
* Application code will not use these methods explicitly, they
* are used internally by JTable.
*
* @param e the event received
* @see ListSelectionListener
*/
public void valueChanged(ListSelectionEvent e) {
if (sortManager != null) {
sortManager.viewSelectionChanged(e);
}
boolean isAdjusting = e.getValueIsAdjusting();
if (rowSelectionAdjusting && !isAdjusting) {
// The assumption is that when the model is no longer adjusting
// we will have already gotten all the changes, and therefore
// don't need to do an additional paint.
rowSelectionAdjusting = false;
return;
}
rowSelectionAdjusting = isAdjusting;
// The getCellRect() calls will fail unless there is at least one column.
if (getRowCount() <= 0 || getColumnCount() <= 0) {
return;
}
int firstIndex = limit(e.getFirstIndex(), 0, getRowCount()-1);
int lastIndex = limit(e.getLastIndex(), 0, getRowCount()-1);
Rectangle firstRowRect = getCellRect(firstIndex, 0, false);
Rectangle lastRowRect = getCellRect(lastIndex, getColumnCount()-1, false);
Rectangle dirtyRegion = firstRowRect.union(lastRowRect);
repaint(dirtyRegion);
}
//
// Implementing the CellEditorListener interface
//
/**
* Invoked when editing is finished. The changes are saved and the
* editor is discarded.
* <p>
* Application code will not use these methods explicitly, they
* are used internally by JTable.
*
* @param e the event received
* @see CellEditorListener
*/
public void editingStopped(ChangeEvent e) {
// Take in the new value
TableCellEditor editor = getCellEditor();
if (editor != null) {
Object value = editor.getCellEditorValue();
setValueAt(value, editingRow, editingColumn);
removeEditor();
}
}
/**
* Invoked when editing is canceled. The editor object is discarded
* and the cell is rendered once again.
* <p>
* Application code will not use these methods explicitly, they
* are used internally by JTable.
*
* @param e the event received
* @see CellEditorListener
*/
public void editingCanceled(ChangeEvent e) {
removeEditor();
}
//
// Implementing the Scrollable interface
//
/**
* Sets the preferred size of the viewport for this table.
*
* @param size a <code>Dimension object specifying the preferredSize of a
* <code>JViewport whose view is this table
* @see Scrollable#getPreferredScrollableViewportSize
* @beaninfo
* description: The preferred size of the viewport.
*/
public void setPreferredScrollableViewportSize(Dimension size) {
preferredViewportSize = size;
}
/**
* Returns the preferred size of the viewport for this table.
*
* @return a <code>Dimension object containing the preferredSize of the JViewport
* which displays this table
* @see Scrollable#getPreferredScrollableViewportSize
*/
public Dimension getPreferredScrollableViewportSize() {
return preferredViewportSize;
}
/**
* Returns the scroll increment (in pixels) that completely exposes one new
* row or column (depending on the orientation).
* <p>
* This method is called each time the user requests a unit scroll.
*
* @param visibleRect the view area visible within the viewport
* @param orientation either <code>SwingConstants.VERTICAL
* or <code>SwingConstants.HORIZONTAL
* @param direction less than zero to scroll up/left,
* greater than zero for down/right
* @return the "unit" increment for scrolling in the specified direction
* @see Scrollable#getScrollableUnitIncrement
*/
public int getScrollableUnitIncrement(Rectangle visibleRect,
int orientation,
int direction) {
int leadingRow;
int leadingCol;
Rectangle leadingCellRect;
int leadingVisibleEdge;
int leadingCellEdge;
int leadingCellSize;
leadingRow = getLeadingRow(visibleRect);
leadingCol = getLeadingCol(visibleRect);
if (orientation == SwingConstants.VERTICAL && leadingRow < 0) {
// Couldn't find leading row - return some default value
return getRowHeight();
}
else if (orientation == SwingConstants.HORIZONTAL && leadingCol < 0) {
// Couldn't find leading col - return some default value
return 100;
}
// Note that it's possible for one of leadingCol or leadingRow to be
// -1, depending on the orientation. This is okay, as getCellRect()
// still provides enough information to calculate the unit increment.
leadingCellRect = getCellRect(leadingRow, leadingCol, true);
leadingVisibleEdge = leadingEdge(visibleRect, orientation);
leadingCellEdge = leadingEdge(leadingCellRect, orientation);
if (orientation == SwingConstants.VERTICAL) {
leadingCellSize = leadingCellRect.height;
}
else {
leadingCellSize = leadingCellRect.width;
}
// 4 cases:
// #1: Leading cell fully visible, reveal next cell
// #2: Leading cell fully visible, hide leading cell
// #3: Leading cell partially visible, hide rest of leading cell
// #4: Leading cell partially visible, reveal rest of leading cell
if (leadingVisibleEdge == leadingCellEdge) { // Leading cell is fully
// visible
// Case #1: Reveal previous cell
if (direction < 0) {
int retVal = 0;
if (orientation == SwingConstants.VERTICAL) {
// Loop past any zero-height rows
while (--leadingRow >= 0) {
retVal = getRowHeight(leadingRow);
if (retVal != 0) {
break;
}
}
}
else { // HORIZONTAL
// Loop past any zero-width cols
while (--leadingCol >= 0) {
retVal = getCellRect(leadingRow, leadingCol, true).width;
if (retVal != 0) {
break;
}
}
}
return retVal;
}
else { // Case #2: hide leading cell
return leadingCellSize;
}
}
else { // Leading cell is partially hidden
// Compute visible, hidden portions
int hiddenAmt = Math.abs(leadingVisibleEdge - leadingCellEdge);
int visibleAmt = leadingCellSize - hiddenAmt;
if (direction > 0) {
// Case #3: hide showing portion of leading cell
return visibleAmt;
}
else { // Case #4: reveal hidden portion of leading cell
return hiddenAmt;
}
}
}
/**
* Returns <code>visibleRect.height or
* <code>visibleRect.width,
* depending on this table's orientation. Note that as of Swing 1.1.1
* (Java 2 v 1.2.2) the value
* returned will ensure that the viewport is cleanly aligned on
* a row boundary.
*
* @return <code>visibleRect.height or
* <code>visibleRect.width
* per the orientation
* @see Scrollable#getScrollableBlockIncrement
*/
public int getScrollableBlockIncrement(Rectangle visibleRect,
int orientation, int direction) {
if (getRowCount() == 0) {
// Short-circuit empty table model
if (SwingConstants.VERTICAL == orientation) {
int rh = getRowHeight();
return (rh > 0) ? Math.max(rh, (visibleRect.height / rh) * rh) :
visibleRect.height;
}
else {
return visibleRect.width;
}
}
// Shortcut for vertical scrolling of a table w/ uniform row height
if (null == rowModel && SwingConstants.VERTICAL == orientation) {
int row = rowAtPoint(visibleRect.getLocation());
assert row != -1;
int col = columnAtPoint(visibleRect.getLocation());
Rectangle cellRect = getCellRect(row, col, true);
if (cellRect.y == visibleRect.y) {
int rh = getRowHeight();
assert rh > 0;
return Math.max(rh, (visibleRect.height / rh) * rh);
}
}
if (direction < 0) {
return getPreviousBlockIncrement(visibleRect, orientation);
}
else {
return getNextBlockIncrement(visibleRect, orientation);
}
}
/**
* Called to get the block increment for upward scrolling in cases of
* horizontal scrolling, or for vertical scrolling of a table with
* variable row heights.
*/
private int getPreviousBlockIncrement(Rectangle visibleRect,
int orientation) {
// Measure back from visible leading edge
// If we hit the cell on its leading edge, it becomes the leading cell.
// Else, use following cell
int row;
int col;
int newEdge;
Point newCellLoc;
int visibleLeadingEdge = leadingEdge(visibleRect, orientation);
boolean leftToRight = getComponentOrientation().isLeftToRight();
int newLeadingEdge;
// Roughly determine the new leading edge by measuring back from the
// leading visible edge by the size of the visible rect, and find the
// cell there.
if (orientation == SwingConstants.VERTICAL) {
newEdge = visibleLeadingEdge - visibleRect.height;
int x = visibleRect.x + (leftToRight ? 0 : visibleRect.width);
newCellLoc = new Point(x, newEdge);
}
else if (leftToRight) {
newEdge = visibleLeadingEdge - visibleRect.width;
newCellLoc = new Point(newEdge, visibleRect.y);
}
else { // Horizontal, right-to-left
newEdge = visibleLeadingEdge + visibleRect.width;
newCellLoc = new Point(newEdge - 1, visibleRect.y);
}
row = rowAtPoint(newCellLoc);
col = columnAtPoint(newCellLoc);
// If we're measuring past the beginning of the table, we get an invalid
// cell. Just go to the beginning of the table in this case.
if (orientation == SwingConstants.VERTICAL & row < 0) {
newLeadingEdge = 0;
}
else if (orientation == SwingConstants.HORIZONTAL & col < 0) {
if (leftToRight) {
newLeadingEdge = 0;
}
else {
newLeadingEdge = getWidth();
}
}
else {
// Refine our measurement
Rectangle newCellRect = getCellRect(row, col, true);
int newCellLeadingEdge = leadingEdge(newCellRect, orientation);
int newCellTrailingEdge = trailingEdge(newCellRect, orientation);
// Usually, we hit in the middle of newCell, and want to scroll to
// the beginning of the cell after newCell. But there are a
// couple corner cases where we want to scroll to the beginning of
// newCell itself. These cases are:
// 1) newCell is so large that it ends at or extends into the
// visibleRect (newCell is the leading cell, or is adjacent to
// the leading cell)
// 2) newEdge happens to fall right on the beginning of a cell
// Case 1
if ((orientation == SwingConstants.VERTICAL || leftToRight) &&
(newCellTrailingEdge >= visibleLeadingEdge)) {
newLeadingEdge = newCellLeadingEdge;
}
else if (orientation == SwingConstants.HORIZONTAL &&
!leftToRight &&
newCellTrailingEdge <= visibleLeadingEdge) {
newLeadingEdge = newCellLeadingEdge;
}
// Case 2:
else if (newEdge == newCellLeadingEdge) {
newLeadingEdge = newCellLeadingEdge;
}
// Common case: scroll to cell after newCell
else {
newLeadingEdge = newCellTrailingEdge;
}
}
return Math.abs(visibleLeadingEdge - newLeadingEdge);
}
/**
* Called to get the block increment for downward scrolling in cases of
* horizontal scrolling, or for vertical scrolling of a table with
* variable row heights.
*/
private int getNextBlockIncrement(Rectangle visibleRect,
int orientation) {
// Find the cell at the trailing edge. Return the distance to put
// that cell at the leading edge.
int trailingRow = getTrailingRow(visibleRect);
int trailingCol = getTrailingCol(visibleRect);
Rectangle cellRect;
boolean cellFillsVis;
int cellLeadingEdge;
int cellTrailingEdge;
int newLeadingEdge;
int visibleLeadingEdge = leadingEdge(visibleRect, orientation);
// If we couldn't find trailing cell, just return the size of the
// visibleRect. Note that, for instance, we don't need the
// trailingCol to proceed if we're scrolling vertically, because
// cellRect will still fill in the required dimensions. This would
// happen if we're scrolling vertically, and the table is not wide
// enough to fill the visibleRect.
if (orientation == SwingConstants.VERTICAL && trailingRow < 0) {
return visibleRect.height;
}
else if (orientation == SwingConstants.HORIZONTAL && trailingCol < 0) {
return visibleRect.width;
}
cellRect = getCellRect(trailingRow, trailingCol, true);
cellLeadingEdge = leadingEdge(cellRect, orientation);
cellTrailingEdge = trailingEdge(cellRect, orientation);
if (orientation == SwingConstants.VERTICAL ||
getComponentOrientation().isLeftToRight()) {
cellFillsVis = cellLeadingEdge <= visibleLeadingEdge;
}
else { // Horizontal, right-to-left
cellFillsVis = cellLeadingEdge >= visibleLeadingEdge;
}
if (cellFillsVis) {
// The visibleRect contains a single large cell. Scroll to the end
// of this cell, so the following cell is the first cell.
newLeadingEdge = cellTrailingEdge;
}
else if (cellTrailingEdge == trailingEdge(visibleRect, orientation)) {
// The trailing cell happens to end right at the end of the
// visibleRect. Again, scroll to the beginning of the next cell.
newLeadingEdge = cellTrailingEdge;
}
else {
// Common case: the trailing cell is partially visible, and isn't
// big enough to take up the entire visibleRect. Scroll so it
// becomes the leading cell.
newLeadingEdge = cellLeadingEdge;
}
return Math.abs(newLeadingEdge - visibleLeadingEdge);
}
/*
* Return the row at the top of the visibleRect
*
* May return -1
*/
private int getLeadingRow(Rectangle visibleRect) {
Point leadingPoint;
if (getComponentOrientation().isLeftToRight()) {
leadingPoint = new Point(visibleRect.x, visibleRect.y);
}
else {
leadingPoint = new Point(visibleRect.x + visibleRect.width - 1,
visibleRect.y);
}
return rowAtPoint(leadingPoint);
}
/*
* Return the column at the leading edge of the visibleRect.
*
* May return -1
*/
private int getLeadingCol(Rectangle visibleRect) {
Point leadingPoint;
if (getComponentOrientation().isLeftToRight()) {
leadingPoint = new Point(visibleRect.x, visibleRect.y);
}
else {
leadingPoint = new Point(visibleRect.x + visibleRect.width - 1,
visibleRect.y);
}
return columnAtPoint(leadingPoint);
}
/*
* Return the row at the bottom of the visibleRect.
*
* May return -1
*/
private int getTrailingRow(Rectangle visibleRect) {
Point trailingPoint;
if (getComponentOrientation().isLeftToRight()) {
trailingPoint = new Point(visibleRect.x,
visibleRect.y + visibleRect.height - 1);
}
else {
trailingPoint = new Point(visibleRect.x + visibleRect.width - 1,
visibleRect.y + visibleRect.height - 1);
}
return rowAtPoint(trailingPoint);
}
/*
* Return the column at the trailing edge of the visibleRect.
*
* May return -1
*/
private int getTrailingCol(Rectangle visibleRect) {
Point trailingPoint;
if (getComponentOrientation().isLeftToRight()) {
trailingPoint = new Point(visibleRect.x + visibleRect.width - 1,
visibleRect.y);
}
else {
trailingPoint = new Point(visibleRect.x, visibleRect.y);
}
return columnAtPoint(trailingPoint);
}
/*
* Returns the leading edge ("beginning") of the given Rectangle.
* For VERTICAL, this is the top, for left-to-right, the left side, and for
* right-to-left, the right side.
*/
private int leadingEdge(Rectangle rect, int orientation) {
if (orientation == SwingConstants.VERTICAL) {
return rect.y;
}
else if (getComponentOrientation().isLeftToRight()) {
return rect.x;
}
else { // Horizontal, right-to-left
return rect.x + rect.width;
}
}
/*
* Returns the trailing edge ("end") of the given Rectangle.
* For VERTICAL, this is the bottom, for left-to-right, the right side, and
* for right-to-left, the left side.
*/
private int trailingEdge(Rectangle rect, int orientation) {
if (orientation == SwingConstants.VERTICAL) {
return rect.y + rect.height;
}
else if (getComponentOrientation().isLeftToRight()) {
return rect.x + rect.width;
}
else { // Horizontal, right-to-left
return rect.x;
}
}
/**
* Returns false if <code>autoResizeMode is set to
* <code>AUTO_RESIZE_OFF, which indicates that the
* width of the viewport does not determine the width
* of the table. Otherwise returns true.
*
* @return false if <code>autoResizeMode is set
* to <code>AUTO_RESIZE_OFF, otherwise returns true
* @see Scrollable#getScrollableTracksViewportWidth
*/
public boolean getScrollableTracksViewportWidth() {
return !(autoResizeMode == AUTO_RESIZE_OFF);
}
/**
* Returns {@code false} to indicate that the height of the viewport does
* not determine the height of the table, unless
* {@code getFillsViewportHeight} is {@code true} and the preferred height
* of the table is smaller than the viewport's height.
*
* @return {@code false} unless {@code getFillsViewportHeight} is
* {@code true} and the table needs to be stretched to fill
* the viewport
* @see Scrollable#getScrollableTracksViewportHeight
* @see #setFillsViewportHeight
* @see #getFillsViewportHeight
*/
public boolean getScrollableTracksViewportHeight() {
Container parent = SwingUtilities.getUnwrappedParent(this);
return getFillsViewportHeight()
&& parent instanceof JViewport
&& parent.getHeight() > getPreferredSize().height;
}
/**
* Sets whether or not this table is always made large enough
* to fill the height of an enclosing viewport. If the preferred
* height of the table is smaller than the viewport, then the table
* will be stretched to fill the viewport. In other words, this
* ensures the table is never smaller than the viewport.
* The default for this property is {@code false}.
*
* @param fillsViewportHeight whether or not this table is always
* made large enough to fill the height of an enclosing
* viewport
* @see #getFillsViewportHeight
* @see #getScrollableTracksViewportHeight
* @since 1.6
* @beaninfo
* bound: true
* description: Whether or not this table is always made large enough
* to fill the height of an enclosing viewport
*/
public void setFillsViewportHeight(boolean fillsViewportHeight) {
boolean old = this.fillsViewportHeight;
this.fillsViewportHeight = fillsViewportHeight;
resizeAndRepaint();
firePropertyChange("fillsViewportHeight", old, fillsViewportHeight);
}
/**
* Returns whether or not this table is always made large enough
* to fill the height of an enclosing viewport.
*
* @return whether or not this table is always made large enough
* to fill the height of an enclosing viewport
* @see #setFillsViewportHeight
* @since 1.6
*/
public boolean getFillsViewportHeight() {
return fillsViewportHeight;
}
//
// Protected Methods
//
protected boolean processKeyBinding(KeyStroke ks, KeyEvent e,
int condition, boolean pressed) {
boolean retValue = super.processKeyBinding(ks, e, condition, pressed);
// Start editing when a key is typed. UI classes can disable this behavior
// by setting the client property JTable.autoStartsEdit to Boolean.FALSE.
if (!retValue && condition == WHEN_ANCESTOR_OF_FOCUSED_COMPONENT &&
isFocusOwner() &&
!Boolean.FALSE.equals(getClientProperty("JTable.autoStartsEdit"))) {
// We do not have a binding for the event.
Component editorComponent = getEditorComponent();
if (editorComponent == null) {
// Only attempt to install the editor on a KEY_PRESSED,
if (e == null || e.getID() != KeyEvent.KEY_PRESSED) {
return false;
}
// Don't start when just a modifier is pressed
int code = e.getKeyCode();
if (code == KeyEvent.VK_SHIFT || code == KeyEvent.VK_CONTROL ||
code == KeyEvent.VK_ALT) {
return false;
}
// Try to install the editor
int leadRow = getSelectionModel().getLeadSelectionIndex();
int leadColumn = getColumnModel().getSelectionModel().
getLeadSelectionIndex();
if (leadRow != -1 && leadColumn != -1 && !isEditing()) {
if (!editCellAt(leadRow, leadColumn, e)) {
return false;
}
}
editorComponent = getEditorComponent();
if (editorComponent == null) {
return false;
}
}
// If the editorComponent is a JComponent, pass the event to it.
if (editorComponent instanceof JComponent) {
retValue = ((JComponent)editorComponent).processKeyBinding
(ks, e, WHEN_FOCUSED, pressed);
// If we have started an editor as a result of the user
// pressing a key and the surrendersFocusOnKeystroke property
// is true, give the focus to the new editor.
if (getSurrendersFocusOnKeystroke()) {
editorComponent.requestFocus();
}
}
}
return retValue;
}
private void setLazyValue(Hashtable h, Class c, String s) {
h.put(c, new SwingLazyValue(s));
}
private void setLazyRenderer(Class c, String s) {
setLazyValue(defaultRenderersByColumnClass, c, s);
}
/**
* Creates default cell renderers for objects, numbers, doubles, dates,
* booleans, and icons.
* @see javax.swing.table.DefaultTableCellRenderer
*
*/
protected void createDefaultRenderers() {
defaultRenderersByColumnClass = new UIDefaults(8, 0.75f);
// Objects
setLazyRenderer(Object.class, "javax.swing.table.DefaultTableCellRenderer$UIResource");
// Numbers
setLazyRenderer(Number.class, "javax.swing.JTable$NumberRenderer");
// Doubles and Floats
setLazyRenderer(Float.class, "javax.swing.JTable$DoubleRenderer");
setLazyRenderer(Double.class, "javax.swing.JTable$DoubleRenderer");
// Dates
setLazyRenderer(Date.class, "javax.swing.JTable$DateRenderer");
// Icons and ImageIcons
setLazyRenderer(Icon.class, "javax.swing.JTable$IconRenderer");
setLazyRenderer(ImageIcon.class, "javax.swing.JTable$IconRenderer");
// Booleans
setLazyRenderer(Boolean.class, "javax.swing.JTable$BooleanRenderer");
}
/**
* Default Renderers
**/
static class NumberRenderer extends DefaultTableCellRenderer.UIResource {
public NumberRenderer() {
super();
setHorizontalAlignment(JLabel.RIGHT);
}
}
static class DoubleRenderer extends NumberRenderer {
NumberFormat formatter;
public DoubleRenderer() { super(); }
public void setValue(Object value) {
if (formatter == null) {
formatter = NumberFormat.getInstance();
}
setText((value == null) ? "" : formatter.format(value));
}
}
static class DateRenderer extends DefaultTableCellRenderer.UIResource {
DateFormat formatter;
public DateRenderer() { super(); }
public void setValue(Object value) {
if (formatter==null) {
formatter = DateFormat.getDateInstance();
}
setText((value == null) ? "" : formatter.format(value));
}
}
static class IconRenderer extends DefaultTableCellRenderer.UIResource {
public IconRenderer() {
super();
setHorizontalAlignment(JLabel.CENTER);
}
public void setValue(Object value) { setIcon((value instanceof Icon) ? (Icon)value : null); }
}
static class BooleanRenderer extends JCheckBox implements TableCellRenderer, UIResource
{
private static final Border noFocusBorder = new EmptyBorder(1, 1, 1, 1);
public BooleanRenderer() {
super();
setHorizontalAlignment(JLabel.CENTER);
setBorderPainted(true);
}
public Component getTableCellRendererComponent(JTable table, Object value,
boolean isSelected, boolean hasFocus, int row, int column) {
if (isSelected) {
setForeground(table.getSelectionForeground());
super.setBackground(table.getSelectionBackground());
}
else {
setForeground(table.getForeground());
setBackground(table.getBackground());
}
setSelected((value != null && ((Boolean)value).booleanValue()));
if (hasFocus) {
setBorder(UIManager.getBorder("Table.focusCellHighlightBorder"));
} else {
setBorder(noFocusBorder);
}
return this;
}
}
private void setLazyEditor(Class c, String s) {
setLazyValue(defaultEditorsByColumnClass, c, s);
}
/**
* Creates default cell editors for objects, numbers, and boolean values.
* @see DefaultCellEditor
*/
protected void createDefaultEditors() {
defaultEditorsByColumnClass = new UIDefaults(3, 0.75f);
// Objects
setLazyEditor(Object.class, "javax.swing.JTable$GenericEditor");
// Numbers
setLazyEditor(Number.class, "javax.swing.JTable$NumberEditor");
// Booleans
setLazyEditor(Boolean.class, "javax.swing.JTable$BooleanEditor");
}
/**
* Default Editors
*/
static class GenericEditor extends DefaultCellEditor {
Class[] argTypes = new Class[]{String.class};
java.lang.reflect.Constructor constructor;
Object value;
public GenericEditor() {
super(new JTextField());
getComponent().setName("Table.editor");
}
public boolean stopCellEditing() {
String s = (String)super.getCellEditorValue();
// Here we are dealing with the case where a user
// has deleted the string value in a cell, possibly
// after a failed validation. Return null, so that
// they have the option to replace the value with
// null or use escape to restore the original.
// For Strings, return "" for backward compatibility.
try {
if ("".equals(s)) {
if (constructor.getDeclaringClass() == String.class) {
value = s;
}
return super.stopCellEditing();
}
SwingUtilities2.checkAccess(constructor.getModifiers());
value = constructor.newInstance(new Object[]{s});
}
catch (Exception e) {
((JComponent)getComponent()).setBorder(new LineBorder(Color.red));
return false;
}
return super.stopCellEditing();
}
public Component getTableCellEditorComponent(JTable table, Object value,
boolean isSelected,
int row, int column) {
this.value = null;
((JComponent)getComponent()).setBorder(new LineBorder(Color.black));
try {
Class<?> type = table.getColumnClass(column);
// Since our obligation is to produce a value which is
// assignable for the required type it is OK to use the
// String constructor for columns which are declared
// to contain Objects. A String is an Object.
if (type == Object.class) {
type = String.class;
}
ReflectUtil.checkPackageAccess(type);
SwingUtilities2.checkAccess(type.getModifiers());
constructor = type.getConstructor(argTypes);
}
catch (Exception e) {
return null;
}
return super.getTableCellEditorComponent(table, value, isSelected, row, column);
}
public Object getCellEditorValue() {
return value;
}
}
static class NumberEditor extends GenericEditor {
public NumberEditor() {
((JTextField)getComponent()).setHorizontalAlignment(JTextField.RIGHT);
}
}
static class BooleanEditor extends DefaultCellEditor {
public BooleanEditor() {
super(new JCheckBox());
JCheckBox checkBox = (JCheckBox)getComponent();
checkBox.setHorizontalAlignment(JCheckBox.CENTER);
}
}
/**
* Initializes table properties to their default values.
*/
protected void initializeLocalVars() {
updateSelectionOnSort = true;
setOpaque(true);
createDefaultRenderers();
createDefaultEditors();
setTableHeader(createDefaultTableHeader());
setShowGrid(true);
setAutoResizeMode(AUTO_RESIZE_SUBSEQUENT_COLUMNS);
setRowHeight(16);
isRowHeightSet = false;
setRowMargin(1);
setRowSelectionAllowed(true);
setCellEditor(null);
setEditingColumn(-1);
setEditingRow(-1);
setSurrendersFocusOnKeystroke(false);
setPreferredScrollableViewportSize(new Dimension(450, 400));
// I'm registered to do tool tips so we can draw tips for the renderers
ToolTipManager toolTipManager = ToolTipManager.sharedInstance();
toolTipManager.registerComponent(this);
setAutoscrolls(true);
}
/**
* Returns the default table model object, which is
* a <code>DefaultTableModel. A subclass can override this
* method to return a different table model object.
*
* @return the default table model object
* @see javax.swing.table.DefaultTableModel
*/
protected TableModel createDefaultDataModel() {
return new DefaultTableModel();
}
/**
* Returns the default column model object, which is
* a <code>DefaultTableColumnModel. A subclass can override this
* method to return a different column model object.
*
* @return the default column model object
* @see javax.swing.table.DefaultTableColumnModel
*/
protected TableColumnModel createDefaultColumnModel() {
return new DefaultTableColumnModel();
}
/**
* Returns the default selection model object, which is
* a <code>DefaultListSelectionModel. A subclass can override this
* method to return a different selection model object.
*
* @return the default selection model object
* @see javax.swing.DefaultListSelectionModel
*/
protected ListSelectionModel createDefaultSelectionModel() {
return new DefaultListSelectionModel();
}
/**
* Returns the default table header object, which is
* a <code>JTableHeader. A subclass can override this
* method to return a different table header object.
*
* @return the default table header object
* @see javax.swing.table.JTableHeader
*/
protected JTableHeader createDefaultTableHeader() {
return new JTableHeader(columnModel);
}
/**
* Equivalent to <code>revalidate followed by repaint.
*/
protected void resizeAndRepaint() {
revalidate();
repaint();
}
/**
* Returns the active cell editor, which is {@code null} if the table
* is not currently editing.
*
* @return the {@code TableCellEditor} that does the editing,
* or {@code null} if the table is not currently editing.
* @see #cellEditor
* @see #getCellEditor(int, int)
*/
public TableCellEditor getCellEditor() {
return cellEditor;
}
/**
* Sets the active cell editor.
*
* @param anEditor the active cell editor
* @see #cellEditor
* @beaninfo
* bound: true
* description: The table's active cell editor.
*/
public void setCellEditor(TableCellEditor anEditor) {
TableCellEditor oldEditor = cellEditor;
cellEditor = anEditor;
firePropertyChange("tableCellEditor", oldEditor, anEditor);
}
/**
* Sets the <code>editingColumn variable.
* @param aColumn the column of the cell to be edited
*
* @see #editingColumn
*/
public void setEditingColumn(int aColumn) {
editingColumn = aColumn;
}
/**
* Sets the <code>editingRow variable.
* @param aRow the row of the cell to be edited
*
* @see #editingRow
*/
public void setEditingRow(int aRow) {
editingRow = aRow;
}
/**
* Returns an appropriate renderer for the cell specified by this row and
* column. If the <code>TableColumn for this column has a non-null
* renderer, returns that. If not, finds the class of the data in
* this column (using <code>getColumnClass)
* and returns the default renderer for this type of data.
* <p>
* <b>Note:
* Throughout the table package, the internal implementations always
* use this method to provide renderers so that this default behavior
* can be safely overridden by a subclass.
*
* @param row the row of the cell to render, where 0 is the first row
* @param column the column of the cell to render,
* where 0 is the first column
* @return the assigned renderer; if <code>null
* returns the default renderer
* for this type of object
* @see javax.swing.table.DefaultTableCellRenderer
* @see javax.swing.table.TableColumn#setCellRenderer
* @see #setDefaultRenderer
*/
public TableCellRenderer getCellRenderer(int row, int column) {
TableColumn tableColumn = getColumnModel().getColumn(column);
TableCellRenderer renderer = tableColumn.getCellRenderer();
if (renderer == null) {
renderer = getDefaultRenderer(getColumnClass(column));
}
return renderer;
}
/**
* Prepares the renderer by querying the data model for the
* value and selection state
* of the cell at <code>row, column.
* Returns the component (may be a <code>Component
* or a <code>JComponent) under the event location.
* <p>
* During a printing operation, this method will configure the
* renderer without indicating selection or focus, to prevent
* them from appearing in the printed output. To do other
* customizations based on whether or not the table is being
* printed, you can check the value of
* {@link javax.swing.JComponent#isPaintingForPrint()}, either here
* or within custom renderers.
* <p>
* <b>Note:
* Throughout the table package, the internal implementations always
* use this method to prepare renderers so that this default behavior
* can be safely overridden by a subclass.
*
* @param renderer the <code>TableCellRenderer to prepare
* @param row the row of the cell to render, where 0 is the first row
* @param column the column of the cell to render,
* where 0 is the first column
* @return the <code>Component under the event location
*/
public Component prepareRenderer(TableCellRenderer renderer, int row, int column) {
Object value = getValueAt(row, column);
boolean isSelected = false;
boolean hasFocus = false;
// Only indicate the selection and focused cell if not printing
if (!isPaintingForPrint()) {
isSelected = isCellSelected(row, column);
boolean rowIsLead =
(selectionModel.getLeadSelectionIndex() == row);
boolean colIsLead =
(columnModel.getSelectionModel().getLeadSelectionIndex() == column);
hasFocus = (rowIsLead && colIsLead) && isFocusOwner();
}
return renderer.getTableCellRendererComponent(this, value,
isSelected, hasFocus,
row, column);
}
/**
* Returns an appropriate editor for the cell specified by
* <code>row and column. If the
* <code>TableColumn for this column has a non-null editor,
* returns that. If not, finds the class of the data in this
* column (using <code>getColumnClass)
* and returns the default editor for this type of data.
* <p>
* <b>Note:
* Throughout the table package, the internal implementations always
* use this method to provide editors so that this default behavior
* can be safely overridden by a subclass.
*
* @param row the row of the cell to edit, where 0 is the first row
* @param column the column of the cell to edit,
* where 0 is the first column
* @return the editor for this cell;
* if <code>null return the default editor for
* this type of cell
* @see DefaultCellEditor
*/
public TableCellEditor getCellEditor(int row, int column) {
TableColumn tableColumn = getColumnModel().getColumn(column);
TableCellEditor editor = tableColumn.getCellEditor();
if (editor == null) {
editor = getDefaultEditor(getColumnClass(column));
}
return editor;
}
/**
* Prepares the editor by querying the data model for the value and
* selection state of the cell at <code>row, column.
* <p>
* <b>Note:
* Throughout the table package, the internal implementations always
* use this method to prepare editors so that this default behavior
* can be safely overridden by a subclass.
*
* @param editor the <code>TableCellEditor to set up
* @param row the row of the cell to edit,
* where 0 is the first row
* @param column the column of the cell to edit,
* where 0 is the first column
* @return the <code>Component being edited
*/
public Component prepareEditor(TableCellEditor editor, int row, int column) {
Object value = getValueAt(row, column);
boolean isSelected = isCellSelected(row, column);
Component comp = editor.getTableCellEditorComponent(this, value, isSelected,
row, column);
if (comp instanceof JComponent) {
JComponent jComp = (JComponent)comp;
if (jComp.getNextFocusableComponent() == null) {
jComp.setNextFocusableComponent(this);
}
}
return comp;
}
/**
* Discards the editor object and frees the real estate it used for
* cell rendering.
*/
public void removeEditor() {
KeyboardFocusManager.getCurrentKeyboardFocusManager().
removePropertyChangeListener("permanentFocusOwner", editorRemover);
editorRemover = null;
TableCellEditor editor = getCellEditor();
if(editor != null) {
editor.removeCellEditorListener(this);
if (editorComp != null) {
Component focusOwner =
KeyboardFocusManager.getCurrentKeyboardFocusManager().getFocusOwner();
boolean isFocusOwnerInTheTable = focusOwner != null?
SwingUtilities.isDescendingFrom(focusOwner, this):false;
remove(editorComp);
if(isFocusOwnerInTheTable) {
requestFocusInWindow();
}
}
Rectangle cellRect = getCellRect(editingRow, editingColumn, false);
setCellEditor(null);
setEditingColumn(-1);
setEditingRow(-1);
editorComp = null;
repaint(cellRect);
}
}
//
// Serialization
//
/**
* See readObject() and writeObject() in JComponent for more
* information about serialization in Swing.
*/
private void writeObject(ObjectOutputStream s) throws IOException {
s.defaultWriteObject();
if (getUIClassID().equals(uiClassID)) {
byte count = JComponent.getWriteObjCounter(this);
JComponent.setWriteObjCounter(this, --count);
if (count == 0 && ui != null) {
ui.installUI(this);
}
}
}
private void readObject(ObjectInputStream s)
throws IOException, ClassNotFoundException
{
s.defaultReadObject();
if ((ui != null) && (getUIClassID().equals(uiClassID))) {
ui.installUI(this);
}
createDefaultRenderers();
createDefaultEditors();
// If ToolTipText != null, then the tooltip has already been
// registered by JComponent.readObject() and we don't want
// to re-register here
if (getToolTipText() == null) {
ToolTipManager.sharedInstance().registerComponent(this);
}
}
/* Called from the JComponent's EnableSerializationFocusListener to
* do any Swing-specific pre-serialization configuration.
*/
void compWriteObjectNotify() {
super.compWriteObjectNotify();
// If ToolTipText != null, then the tooltip has already been
// unregistered by JComponent.compWriteObjectNotify()
if (getToolTipText() == null) {
ToolTipManager.sharedInstance().unregisterComponent(this);
}
}
/**
* Returns a string representation of this table. This method
* is intended to be used only for debugging purposes, and the
* content and format of the returned string may vary between
* implementations. The returned string may be empty but may not
* be <code>null.
*
* @return a string representation of this table
*/
protected String paramString() {
String gridColorString = (gridColor != null ?
gridColor.toString() : "");
String showHorizontalLinesString = (showHorizontalLines ?
"true" : "false");
String showVerticalLinesString = (showVerticalLines ?
"true" : "false");
String autoResizeModeString;
if (autoResizeMode == AUTO_RESIZE_OFF) {
autoResizeModeString = "AUTO_RESIZE_OFF";
} else if (autoResizeMode == AUTO_RESIZE_NEXT_COLUMN) {
autoResizeModeString = "AUTO_RESIZE_NEXT_COLUMN";
} else if (autoResizeMode == AUTO_RESIZE_SUBSEQUENT_COLUMNS) {
autoResizeModeString = "AUTO_RESIZE_SUBSEQUENT_COLUMNS";
} else if (autoResizeMode == AUTO_RESIZE_LAST_COLUMN) {
autoResizeModeString = "AUTO_RESIZE_LAST_COLUMN";
} else if (autoResizeMode == AUTO_RESIZE_ALL_COLUMNS) {
autoResizeModeString = "AUTO_RESIZE_ALL_COLUMNS";
} else autoResizeModeString = "";
String autoCreateColumnsFromModelString = (autoCreateColumnsFromModel ?
"true" : "false");
String preferredViewportSizeString = (preferredViewportSize != null ?
preferredViewportSize.toString()
: "");
String rowSelectionAllowedString = (rowSelectionAllowed ?
"true" : "false");
String cellSelectionEnabledString = (cellSelectionEnabled ?
"true" : "false");
String selectionForegroundString = (selectionForeground != null ?
selectionForeground.toString() :
"");
String selectionBackgroundString = (selectionBackground != null ?
selectionBackground.toString() :
"");
return super.paramString() +
",autoCreateColumnsFromModel=" + autoCreateColumnsFromModelString +
",autoResizeMode=" + autoResizeModeString +
",cellSelectionEnabled=" + cellSelectionEnabledString +
",editingColumn=" + editingColumn +
",editingRow=" + editingRow +
",gridColor=" + gridColorString +
",preferredViewportSize=" + preferredViewportSizeString +
",rowHeight=" + rowHeight +
",rowMargin=" + rowMargin +
",rowSelectionAllowed=" + rowSelectionAllowedString +
",selectionBackground=" + selectionBackgroundString +
",selectionForeground=" + selectionForegroundString +
",showHorizontalLines=" + showHorizontalLinesString +
",showVerticalLines=" + showVerticalLinesString;
}
// This class tracks changes in the keyboard focus state. It is used
// when the JTable is editing to determine when to cancel the edit.
// If focus switches to a component outside of the jtable, but in the
// same window, this will cancel editing.
class CellEditorRemover implements PropertyChangeListener {
KeyboardFocusManager focusManager;
public CellEditorRemover(KeyboardFocusManager fm) {
this.focusManager = fm;
}
public void propertyChange(PropertyChangeEvent ev) {
if (!isEditing() || getClientProperty("terminateEditOnFocusLost") != Boolean.TRUE) {
return;
}
Component c = focusManager.getPermanentFocusOwner();
while (c != null) {
if (c == JTable.this) {
// focus remains inside the table
return;
} else if ((c instanceof Window) ||
(c instanceof Applet && c.getParent() == null)) {
if (c == SwingUtilities.getRoot(JTable.this)) {
if (!getCellEditor().stopCellEditing()) {
getCellEditor().cancelCellEditing();
}
}
break;
}
c = c.getParent();
}
}
}
/////////////////
// Printing Support
/////////////////
/**
* A convenience method that displays a printing dialog, and then prints
* this <code>JTable in mode PrintMode.FIT_WIDTH,
* with no header or footer text. A modal progress dialog, with an abort
* option, will be shown for the duration of printing.
* <p>
* Note: In headless mode, no dialogs are shown and printing
* occurs on the default printer.
*
* @return true, unless printing is cancelled by the user
* @throws SecurityException if this thread is not allowed to
* initiate a print job request
* @throws PrinterException if an error in the print system causes the job
* to be aborted
* @see #print(JTable.PrintMode, MessageFormat, MessageFormat,
* boolean, PrintRequestAttributeSet, boolean, PrintService)
* @see #getPrintable
*
* @since 1.5
*/
public boolean print() throws PrinterException {
return print(PrintMode.FIT_WIDTH);
}
/**
* A convenience method that displays a printing dialog, and then prints
* this <code>JTable in the given printing mode,
* with no header or footer text. A modal progress dialog, with an abort
* option, will be shown for the duration of printing.
* <p>
* Note: In headless mode, no dialogs are shown and printing
* occurs on the default printer.
*
* @param printMode the printing mode that the printable should use
* @return true, unless printing is cancelled by the user
* @throws SecurityException if this thread is not allowed to
* initiate a print job request
* @throws PrinterException if an error in the print system causes the job
* to be aborted
* @see #print(JTable.PrintMode, MessageFormat, MessageFormat,
* boolean, PrintRequestAttributeSet, boolean, PrintService)
* @see #getPrintable
*
* @since 1.5
*/
public boolean print(PrintMode printMode) throws PrinterException {
return print(printMode, null, null);
}
/**
* A convenience method that displays a printing dialog, and then prints
* this <code>JTable in the given printing mode,
* with the specified header and footer text. A modal progress dialog,
* with an abort option, will be shown for the duration of printing.
* <p>
* Note: In headless mode, no dialogs are shown and printing
* occurs on the default printer.
*
* @param printMode the printing mode that the printable should use
* @param headerFormat a <code>MessageFormat specifying the text
* to be used in printing a header,
* or null for none
* @param footerFormat a <code>MessageFormat specifying the text
* to be used in printing a footer,
* or null for none
* @return true, unless printing is cancelled by the user
* @throws SecurityException if this thread is not allowed to
* initiate a print job request
* @throws PrinterException if an error in the print system causes the job
* to be aborted
* @see #print(JTable.PrintMode, MessageFormat, MessageFormat,
* boolean, PrintRequestAttributeSet, boolean, PrintService)
* @see #getPrintable
*
* @since 1.5
*/
public boolean print(PrintMode printMode,
MessageFormat headerFormat,
MessageFormat footerFormat) throws PrinterException {
boolean showDialogs = !GraphicsEnvironment.isHeadless();
return print(printMode, headerFormat, footerFormat,
showDialogs, null, showDialogs);
}
/**
* Prints this table, as specified by the fully featured
* {@link #print(JTable.PrintMode, MessageFormat, MessageFormat,
* boolean, PrintRequestAttributeSet, boolean, PrintService) print}
* method, with the default printer specified as the print service.
*
* @param printMode the printing mode that the printable should use
* @param headerFormat a <code>MessageFormat specifying the text
* to be used in printing a header,
* or <code>null for none
* @param footerFormat a <code>MessageFormat specifying the text
* to be used in printing a footer,
* or <code>null for none
* @param showPrintDialog whether or not to display a print dialog
* @param attr a <code>PrintRequestAttributeSet
* specifying any printing attributes,
* or <code>null for none
* @param interactive whether or not to print in an interactive mode
* @return true, unless printing is cancelled by the user
* @throws HeadlessException if the method is asked to show a printing
* dialog or run interactively, and
* <code>GraphicsEnvironment.isHeadless
* returns <code>true
* @throws SecurityException if this thread is not allowed to
* initiate a print job request
* @throws PrinterException if an error in the print system causes the job
* to be aborted
* @see #print(JTable.PrintMode, MessageFormat, MessageFormat,
* boolean, PrintRequestAttributeSet, boolean, PrintService)
* @see #getPrintable
*
* @since 1.5
*/
public boolean print(PrintMode printMode,
MessageFormat headerFormat,
MessageFormat footerFormat,
boolean showPrintDialog,
PrintRequestAttributeSet attr,
boolean interactive) throws PrinterException,
HeadlessException {
return print(printMode,
headerFormat,
footerFormat,
showPrintDialog,
attr,
interactive,
null);
}
/**
* Prints this <code>JTable. Takes steps that the majority of
* developers would take in order to print a <code>JTable.
* In short, it prepares the table, calls <code>getPrintable to
* fetch an appropriate <code>Printable, and then sends it to the
* printer.
* <p>
* A <code>boolean parameter allows you to specify whether or not
* a printing dialog is displayed to the user. When it is, the user may
* use the dialog to change the destination printer or printing attributes,
* or even to cancel the print. Another two parameters allow for a
* <code>PrintService and printing attributes to be specified.
* These parameters can be used either to provide initial values for the
* print dialog, or to specify values when the dialog is not shown.
* <p>
* A second <code>boolean parameter allows you to specify whether
* or not to perform printing in an interactive mode. If <code>true,
* a modal progress dialog, with an abort option, is displayed for the
* duration of printing . This dialog also prevents any user action which
* may affect the table. However, it can not prevent the table from being
* modified by code (for example, another thread that posts updates using
* <code>SwingUtilities.invokeLater). It is therefore the
* responsibility of the developer to ensure that no other code modifies
* the table in any way during printing (invalid modifications include
* changes in: size, renderers, or underlying data). Printing behavior is
* undefined when the table is changed during printing.
* <p>
* If <code>false is specified for this parameter, no dialog will
* be displayed and printing will begin immediately on the event-dispatch
* thread. This blocks any other events, including repaints, from being
* processed until printing is complete. Although this effectively prevents
* the table from being changed, it doesn't provide a good user experience.
* For this reason, specifying <code>false is only recommended when
* printing from an application with no visible GUI.
* <p>
* Note: Attempting to show the printing dialog or run interactively, while
* in headless mode, will result in a <code>HeadlessException.
* <p>
* Before fetching the printable, this method will gracefully terminate
* editing, if necessary, to prevent an editor from showing in the printed
* result. Additionally, <code>JTable will prepare its renderers
* during printing such that selection and focus are not indicated.
* As far as customizing further how the table looks in the printout,
* developers can provide custom renderers or paint code that conditionalize
* on the value of {@link javax.swing.JComponent#isPaintingForPrint()}.
* <p>
* See {@link #getPrintable} for more description on how the table is
* printed.
*
* @param printMode the printing mode that the printable should use
* @param headerFormat a <code>MessageFormat specifying the text
* to be used in printing a header,
* or <code>null for none
* @param footerFormat a <code>MessageFormat specifying the text
* to be used in printing a footer,
* or <code>null for none
* @param showPrintDialog whether or not to display a print dialog
* @param attr a <code>PrintRequestAttributeSet
* specifying any printing attributes,
* or <code>null for none
* @param interactive whether or not to print in an interactive mode
* @param service the destination <code>PrintService,
* or <code>null to use the default printer
* @return true, unless printing is cancelled by the user
* @throws HeadlessException if the method is asked to show a printing
* dialog or run interactively, and
* <code>GraphicsEnvironment.isHeadless
* returns <code>true
* @throws SecurityException if a security manager exists and its
* {@link java.lang.SecurityManager#checkPrintJobAccess}
* method disallows this thread from creating a print job request
* @throws PrinterException if an error in the print system causes the job
* to be aborted
* @see #getPrintable
* @see java.awt.GraphicsEnvironment#isHeadless
*
* @since 1.6
*/
public boolean print(PrintMode printMode,
MessageFormat headerFormat,
MessageFormat footerFormat,
boolean showPrintDialog,
PrintRequestAttributeSet attr,
boolean interactive,
PrintService service) throws PrinterException,
HeadlessException {
// complain early if an invalid parameter is specified for headless mode
boolean isHeadless = GraphicsEnvironment.isHeadless();
if (isHeadless) {
if (showPrintDialog) {
throw new HeadlessException("Can't show print dialog.");
}
if (interactive) {
throw new HeadlessException("Can't run interactively.");
}
}
// Get a PrinterJob.
// Do this before anything with side-effects since it may throw a
// security exception - in which case we don't want to do anything else.
final PrinterJob job = PrinterJob.getPrinterJob();
if (isEditing()) {
// try to stop cell editing, and failing that, cancel it
if (!getCellEditor().stopCellEditing()) {
getCellEditor().cancelCellEditing();
}
}
if (attr == null) {
attr = new HashPrintRequestAttributeSet();
}
final PrintingStatus printingStatus;
// fetch the Printable
Printable printable =
getPrintable(printMode, headerFormat, footerFormat);
if (interactive) {
// wrap the Printable so that we can print on another thread
printable = new ThreadSafePrintable(printable);
printingStatus = PrintingStatus.createPrintingStatus(this, job);
printable = printingStatus.createNotificationPrintable(printable);
} else {
// to please compiler
printingStatus = null;
}
// set the printable on the PrinterJob
job.setPrintable(printable);
// if specified, set the PrintService on the PrinterJob
if (service != null) {
job.setPrintService(service);
}
// if requested, show the print dialog
if (showPrintDialog && !job.printDialog(attr)) {
// the user cancelled the print dialog
return false;
}
// if not interactive, just print on this thread (no dialog)
if (!interactive) {
// do the printing
job.print(attr);
// we're done
return true;
}
// make sure this is clear since we'll check it after
printError = null;
// to synchronize on
final Object lock = new Object();
// copied so we can access from the inner class
final PrintRequestAttributeSet copyAttr = attr;
// this runnable will be used to do the printing
// (and save any throwables) on another thread
Runnable runnable = new Runnable() {
public void run() {
try {
// do the printing
job.print(copyAttr);
} catch (Throwable t) {
// save any Throwable to be rethrown
synchronized(lock) {
printError = t;
}
} finally {
// we're finished - hide the dialog
printingStatus.dispose();
}
}
};
// start printing on another thread
Thread th = new Thread(runnable);
th.start();
printingStatus.showModal(true);
// look for any error that the printing may have generated
Throwable pe;
synchronized(lock) {
pe = printError;
printError = null;
}
// check the type of error and handle it
if (pe != null) {
// a subclass of PrinterException meaning the job was aborted,
// in this case, by the user
if (pe instanceof PrinterAbortException) {
return false;
} else if (pe instanceof PrinterException) {
throw (PrinterException)pe;
} else if (pe instanceof RuntimeException) {
throw (RuntimeException)pe;
} else if (pe instanceof Error) {
throw (Error)pe;
}
// can not happen
throw new AssertionError(pe);
}
return true;
}
/**
* Return a <code>Printable for use in printing this JTable.
* <p>
* This method is meant for those wishing to customize the default
* <code>Printable implementation used by JTable's
* <code>print methods. Developers wanting simply to print the table
* should use one of those methods directly.
* <p>
* The <code>Printable can be requested in one of two printing modes.
* In both modes, it spreads table rows naturally in sequence across
* multiple pages, fitting as many rows as possible per page.
* <code>PrintMode.NORMAL specifies that the table be
* printed at its current size. In this mode, there may be a need to spread
* columns across pages in a similar manner to that of the rows. When the
* need arises, columns are distributed in an order consistent with the
* table's <code>ComponentOrientation.
* <code>PrintMode.FIT_WIDTH specifies that the output be
* scaled smaller, if necessary, to fit the table's entire width
* (and thereby all columns) on each page. Width and height are scaled
* equally, maintaining the aspect ratio of the output.
* <p>
* The <code>Printable heads the portion of table on each page
* with the appropriate section from the table's <code>JTableHeader,
* if it has one.
* <p>
* Header and footer text can be added to the output by providing
* <code>MessageFormat arguments. The printing code requests
* Strings from the formats, providing a single item which may be included
* in the formatted string: an <code>Integer representing the current
* page number.
* <p>
* You are encouraged to read the documentation for
* <code>MessageFormat as some characters, such as single-quote,
* are special and need to be escaped.
* <p>
* Here's an example of creating a <code>MessageFormat that can be
* used to print "Duke's Table: Page - " and the current page number:
*
* <pre>
* // notice the escaping of the single quote
* // notice how the page number is included with "{0}"
* MessageFormat format = new MessageFormat("Duke''s Table: Page - {0}");
* </pre>
* <p>
* The <code>Printable constrains what it draws to the printable
* area of each page that it prints. Under certain circumstances, it may
* find it impossible to fit all of a page's content into that area. In
* these cases the output may be clipped, but the implementation
* makes an effort to do something reasonable. Here are a few situations
* where this is known to occur, and how they may be handled by this
* particular implementation:
* <ul>
* <li>In any mode, when the header or footer text is too wide to fit
* completely in the printable area -- print as much of the text as
* possible starting from the beginning, as determined by the table's
* <code>ComponentOrientation.
* <li>In any mode, when a row is too tall to fit in the
* printable area -- print the upper-most portion of the row
* and paint no lower border on the table.
* <li>In PrintMode.NORMAL when a column
* is too wide to fit in the printable area -- print the center
* portion of the column and leave the left and right borders
* off the table.
* </ul>
* <p>
* It is entirely valid for this <code>Printable to be wrapped
* inside another in order to create complex reports and documents. You may
* even request that different pages be rendered into different sized
* printable areas. The implementation must be prepared to handle this
* (possibly by doing its layout calculations on the fly). However,
* providing different heights to each page will likely not work well
* with <code>PrintMode.NORMAL when it has to spread columns
* across pages.
* <p>
* As far as customizing how the table looks in the printed result,
* <code>JTable itself will take care of hiding the selection
* and focus during printing. For additional customizations, your
* renderers or painting code can customize the look based on the value
* of {@link javax.swing.JComponent#isPaintingForPrint()}
* <p>
* Also, <i>before calling this method you may wish to first
* modify the state of the table, such as to cancel cell editing or
* have the user size the table appropriately. However, you must not
* modify the state of the table <i>after this Printable
* has been fetched (invalid modifications include changes in size or
* underlying data). The behavior of the returned <code>Printable
* is undefined once the table has been changed.
*
* @param printMode the printing mode that the printable should use
* @param headerFormat a <code>MessageFormat specifying the text to
* be used in printing a header, or null for none
* @param footerFormat a <code>MessageFormat specifying the text to
* be used in printing a footer, or null for none
* @return a <code>Printable for printing this JTable
* @see #print(JTable.PrintMode, MessageFormat, MessageFormat,
* boolean, PrintRequestAttributeSet, boolean)
* @see Printable
* @see PrinterJob
*
* @since 1.5
*/
public Printable getPrintable(PrintMode printMode,
MessageFormat headerFormat,
MessageFormat footerFormat) {
return new TablePrintable(this, printMode, headerFormat, footerFormat);
}
/**
* A <code>Printable implementation that wraps another
* <code>Printable, making it safe for printing on another thread.
*/
private class ThreadSafePrintable implements Printable {
/** The delegate <code>Printable. */
private Printable printDelegate;
/**
* To communicate any return value when delegating.
*/
private int retVal;
/**
* To communicate any <code>Throwable when delegating.
*/
private Throwable retThrowable;
/**
* Construct a <code>ThreadSafePrintable around the given
* delegate.
*
* @param printDelegate the <code>Printable to delegate to
*/
public ThreadSafePrintable(Printable printDelegate) {
this.printDelegate = printDelegate;
}
/**
* Prints the specified page into the given {@link Graphics}
* context, in the specified format.
* <p>
* Regardless of what thread this method is called on, all calls into
* the delegate will be done on the event-dispatch thread.
*
* @param graphics the context into which the page is drawn
* @param pageFormat the size and orientation of the page being drawn
* @param pageIndex the zero based index of the page to be drawn
* @return PAGE_EXISTS if the page is rendered successfully, or
* NO_SUCH_PAGE if a non-existent page index is specified
* @throws PrinterException if an error causes printing to be aborted
*/
public int print(final Graphics graphics,
final PageFormat pageFormat,
final int pageIndex) throws PrinterException {
// We'll use this Runnable
Runnable runnable = new Runnable() {
public synchronized void run() {
try {
// call into the delegate and save the return value
retVal = printDelegate.print(graphics, pageFormat, pageIndex);
} catch (Throwable throwable) {
// save any Throwable to be rethrown
retThrowable = throwable;
} finally {
// notify the caller that we're done
notifyAll();
}
}
};
synchronized(runnable) {
// make sure these are initialized
retVal = -1;
retThrowable = null;
// call into the EDT
SwingUtilities.invokeLater(runnable);
// wait for the runnable to finish
while (retVal == -1 && retThrowable == null) {
try {
runnable.wait();
} catch (InterruptedException ie) {
// short process, safe to ignore interrupts
}
}
// if the delegate threw a throwable, rethrow it here
if (retThrowable != null) {
if (retThrowable instanceof PrinterException) {
throw (PrinterException)retThrowable;
} else if (retThrowable instanceof RuntimeException) {
throw (RuntimeException)retThrowable;
} else if (retThrowable instanceof Error) {
throw (Error)retThrowable;
}
// can not happen
throw new AssertionError(retThrowable);
}
return retVal;
}
}
}
/////////////////
// Accessibility support
////////////////
/**
* Gets the AccessibleContext associated with this JTable.
* For tables, the AccessibleContext takes the form of an
* AccessibleJTable.
* A new AccessibleJTable instance is created if necessary.
*
* @return an AccessibleJTable that serves as the
* AccessibleContext of this JTable
*/
public AccessibleContext getAccessibleContext() {
if (accessibleContext == null) {
accessibleContext = new AccessibleJTable();
}
return accessibleContext;
}
//
// *** should also implement AccessibleSelection?
// *** and what's up with keyboard navigation/manipulation?
//
/**
* This class implements accessibility support for the
* <code>JTable class. It provides an implementation of the
* Java Accessibility API appropriate to table user-interface elements.
* <p>
* <strong>Warning:
* Serialized objects of this class will not be compatible with
* future Swing releases. The current serialization support is
* appropriate for short term storage or RMI between applications running
* the same version of Swing. As of 1.4, support for long term storage
* of all JavaBeans™
* has been added to the <code>java.beans package.
* Please see {@link java.beans.XMLEncoder}.
*/
protected class AccessibleJTable extends AccessibleJComponent
implements AccessibleSelection, ListSelectionListener, TableModelListener,
TableColumnModelListener, CellEditorListener, PropertyChangeListener,
AccessibleExtendedTable {
int lastSelectedRow;
int lastSelectedCol;
/**
* AccessibleJTable constructor
*
* @since 1.5
*/
protected AccessibleJTable() {
super();
JTable.this.addPropertyChangeListener(this);
JTable.this.getSelectionModel().addListSelectionListener(this);
TableColumnModel tcm = JTable.this.getColumnModel();
tcm.addColumnModelListener(this);
tcm.getSelectionModel().addListSelectionListener(this);
JTable.this.getModel().addTableModelListener(this);
lastSelectedRow = JTable.this.getSelectedRow();
lastSelectedCol = JTable.this.getSelectedColumn();
}
// Listeners to track model, etc. changes to as to re-place the other
// listeners
/**
* Track changes to selection model, column model, etc. so as to
* be able to re-place listeners on those in order to pass on
* information to the Accessibility PropertyChange mechanism
*/
public void propertyChange(PropertyChangeEvent e) {
String name = e.getPropertyName();
Object oldValue = e.getOldValue();
Object newValue = e.getNewValue();
// re-set tableModel listeners
if (name.compareTo("model") == 0) {
if (oldValue != null && oldValue instanceof TableModel) {
((TableModel) oldValue).removeTableModelListener(this);
}
if (newValue != null && newValue instanceof TableModel) {
((TableModel) newValue).addTableModelListener(this);
}
// re-set selectionModel listeners
} else if (name.compareTo("selectionModel") == 0) {
Object source = e.getSource();
if (source == JTable.this) { // row selection model
if (oldValue != null &&
oldValue instanceof ListSelectionModel) {
((ListSelectionModel) oldValue).removeListSelectionListener(this);
}
if (newValue != null &&
newValue instanceof ListSelectionModel) {
((ListSelectionModel) newValue).addListSelectionListener(this);
}
} else if (source == JTable.this.getColumnModel()) {
if (oldValue != null &&
oldValue instanceof ListSelectionModel) {
((ListSelectionModel) oldValue).removeListSelectionListener(this);
}
if (newValue != null &&
newValue instanceof ListSelectionModel) {
((ListSelectionModel) newValue).addListSelectionListener(this);
}
} else {
// System.out.println("!!! Bug in source of selectionModel propertyChangeEvent");
}
// re-set columnModel listeners
// and column's selection property listener as well
} else if (name.compareTo("columnModel") == 0) {
if (oldValue != null && oldValue instanceof TableColumnModel) {
TableColumnModel tcm = (TableColumnModel) oldValue;
tcm.removeColumnModelListener(this);
tcm.getSelectionModel().removeListSelectionListener(this);
}
if (newValue != null && newValue instanceof TableColumnModel) {
TableColumnModel tcm = (TableColumnModel) newValue;
tcm.addColumnModelListener(this);
tcm.getSelectionModel().addListSelectionListener(this);
}
// re-se cellEditor listeners
} else if (name.compareTo("tableCellEditor") == 0) {
if (oldValue != null && oldValue instanceof TableCellEditor) {
((TableCellEditor) oldValue).removeCellEditorListener(this);
}
if (newValue != null && newValue instanceof TableCellEditor) {
((TableCellEditor) newValue).addCellEditorListener(this);
}
}
}
// Listeners to echo changes to the AccessiblePropertyChange mechanism
/*
* Describes a change in the accessible table model.
*/
protected class AccessibleJTableModelChange
implements AccessibleTableModelChange {
protected int type;
protected int firstRow;
protected int lastRow;
protected int firstColumn;
protected int lastColumn;
protected AccessibleJTableModelChange(int type, int firstRow,
int lastRow, int firstColumn,
int lastColumn) {
this.type = type;
this.firstRow = firstRow;
this.lastRow = lastRow;
this.firstColumn = firstColumn;
this.lastColumn = lastColumn;
}
public int getType() {
return type;
}
public int getFirstRow() {
return firstRow;
}
public int getLastRow() {
return lastRow;
}
public int getFirstColumn() {
return firstColumn;
}
public int getLastColumn() {
return lastColumn;
}
}
/**
* Track changes to the table contents
*/
public void tableChanged(TableModelEvent e) {
firePropertyChange(AccessibleContext.ACCESSIBLE_VISIBLE_DATA_PROPERTY,
null, null);
if (e != null) {
int firstColumn = e.getColumn();
int lastColumn = e.getColumn();
if (firstColumn == TableModelEvent.ALL_COLUMNS) {
firstColumn = 0;
lastColumn = getColumnCount() - 1;
}
// Fire a property change event indicating the table model
// has changed.
AccessibleJTableModelChange change =
new AccessibleJTableModelChange(e.getType(),
e.getFirstRow(),
e.getLastRow(),
firstColumn,
lastColumn);
firePropertyChange(AccessibleContext.ACCESSIBLE_TABLE_MODEL_CHANGED,
null, change);
}
}
/**
* Track changes to the table contents (row insertions)
*/
public void tableRowsInserted(TableModelEvent e) {
firePropertyChange(AccessibleContext.ACCESSIBLE_VISIBLE_DATA_PROPERTY,
null, null);
// Fire a property change event indicating the table model
// has changed.
int firstColumn = e.getColumn();
int lastColumn = e.getColumn();
if (firstColumn == TableModelEvent.ALL_COLUMNS) {
firstColumn = 0;
lastColumn = getColumnCount() - 1;
}
AccessibleJTableModelChange change =
new AccessibleJTableModelChange(e.getType(),
e.getFirstRow(),
e.getLastRow(),
firstColumn,
lastColumn);
firePropertyChange(AccessibleContext.ACCESSIBLE_TABLE_MODEL_CHANGED,
null, change);
}
/**
* Track changes to the table contents (row deletions)
*/
public void tableRowsDeleted(TableModelEvent e) {
firePropertyChange(AccessibleContext.ACCESSIBLE_VISIBLE_DATA_PROPERTY,
null, null);
// Fire a property change event indicating the table model
// has changed.
int firstColumn = e.getColumn();
int lastColumn = e.getColumn();
if (firstColumn == TableModelEvent.ALL_COLUMNS) {
firstColumn = 0;
lastColumn = getColumnCount() - 1;
}
AccessibleJTableModelChange change =
new AccessibleJTableModelChange(e.getType(),
e.getFirstRow(),
e.getLastRow(),
firstColumn,
lastColumn);
firePropertyChange(AccessibleContext.ACCESSIBLE_TABLE_MODEL_CHANGED,
null, change);
}
/**
* Track changes to the table contents (column insertions)
*/
public void columnAdded(TableColumnModelEvent e) {
firePropertyChange(AccessibleContext.ACCESSIBLE_VISIBLE_DATA_PROPERTY,
null, null);
// Fire a property change event indicating the table model
// has changed.
int type = AccessibleTableModelChange.INSERT;
AccessibleJTableModelChange change =
new AccessibleJTableModelChange(type,
0,
0,
e.getFromIndex(),
e.getToIndex());
firePropertyChange(AccessibleContext.ACCESSIBLE_TABLE_MODEL_CHANGED,
null, change);
}
/**
* Track changes to the table contents (column deletions)
*/
public void columnRemoved(TableColumnModelEvent e) {
firePropertyChange(AccessibleContext.ACCESSIBLE_VISIBLE_DATA_PROPERTY,
null, null);
// Fire a property change event indicating the table model
// has changed.
int type = AccessibleTableModelChange.DELETE;
AccessibleJTableModelChange change =
new AccessibleJTableModelChange(type,
0,
0,
e.getFromIndex(),
e.getToIndex());
firePropertyChange(AccessibleContext.ACCESSIBLE_TABLE_MODEL_CHANGED,
null, change);
}
/**
* Track changes of a column repositioning.
*
* @see TableColumnModelListener
*/
public void columnMoved(TableColumnModelEvent e) {
firePropertyChange(AccessibleContext.ACCESSIBLE_VISIBLE_DATA_PROPERTY,
null, null);
// Fire property change events indicating the table model
// has changed.
int type = AccessibleTableModelChange.DELETE;
AccessibleJTableModelChange change =
new AccessibleJTableModelChange(type,
0,
0,
e.getFromIndex(),
e.getFromIndex());
firePropertyChange(AccessibleContext.ACCESSIBLE_TABLE_MODEL_CHANGED,
null, change);
int type2 = AccessibleTableModelChange.INSERT;
AccessibleJTableModelChange change2 =
new AccessibleJTableModelChange(type2,
0,
0,
e.getToIndex(),
e.getToIndex());
firePropertyChange(AccessibleContext.ACCESSIBLE_TABLE_MODEL_CHANGED,
null, change2);
}
/**
* Track changes of a column moving due to margin changes.
*
* @see TableColumnModelListener
*/
public void columnMarginChanged(ChangeEvent e) {
firePropertyChange(AccessibleContext.ACCESSIBLE_VISIBLE_DATA_PROPERTY,
null, null);
}
/**
* Track that the selection model of the TableColumnModel changed.
*
* @see TableColumnModelListener
*/
public void columnSelectionChanged(ListSelectionEvent e) {
// we should now re-place our TableColumn listener
}
/**
* Track changes to a cell's contents.
*
* Invoked when editing is finished. The changes are saved, the
* editor object is discarded, and the cell is rendered once again.
*
* @see CellEditorListener
*/
public void editingStopped(ChangeEvent e) {
// it'd be great if we could figure out which cell, and pass that
// somehow as a parameter
firePropertyChange(AccessibleContext.ACCESSIBLE_VISIBLE_DATA_PROPERTY,
null, null);
}
/**
* Invoked when editing is canceled. The editor object is discarded
* and the cell is rendered once again.
*
* @see CellEditorListener
*/
public void editingCanceled(ChangeEvent e) {
// nothing to report, 'cause nothing changed
}
/**
* Track changes to table cell selections
*/
public void valueChanged(ListSelectionEvent e) {
firePropertyChange(AccessibleContext.ACCESSIBLE_SELECTION_PROPERTY,
Boolean.valueOf(false), Boolean.valueOf(true));
int selectedRow = JTable.this.getSelectedRow();
int selectedCol = JTable.this.getSelectedColumn();
if (selectedRow != lastSelectedRow ||
selectedCol != lastSelectedCol) {
Accessible oldA = getAccessibleAt(lastSelectedRow,
lastSelectedCol);
Accessible newA = getAccessibleAt(selectedRow, selectedCol);
firePropertyChange(AccessibleContext.ACCESSIBLE_ACTIVE_DESCENDANT_PROPERTY,
oldA, newA);
lastSelectedRow = selectedRow;
lastSelectedCol = selectedCol;
}
}
// AccessibleContext support
/**
* Get the AccessibleSelection associated with this object. In the
* implementation of the Java Accessibility API for this class,
* return this object, which is responsible for implementing the
* AccessibleSelection interface on behalf of itself.
*
* @return this object
*/
public AccessibleSelection getAccessibleSelection() {
return this;
}
/**
* Gets the role of this object.
*
* @return an instance of AccessibleRole describing the role of the
* object
* @see AccessibleRole
*/
public AccessibleRole getAccessibleRole() {
return AccessibleRole.TABLE;
}
/**
* Returns the <code>Accessible child, if one exists,
* contained at the local coordinate <code>Point.
*
* @param p the point defining the top-left corner of the
* <code>Accessible, given in the coordinate space
* of the object's parent
* @return the <code>Accessible, if it exists,
* at the specified location; else <code>null
*/
public Accessible getAccessibleAt(Point p) {
int column = columnAtPoint(p);
int row = rowAtPoint(p);
if ((column != -1) && (row != -1)) {
TableColumn aColumn = getColumnModel().getColumn(column);
TableCellRenderer renderer = aColumn.getCellRenderer();
if (renderer == null) {
Class<?> columnClass = getColumnClass(column);
renderer = getDefaultRenderer(columnClass);
}
Component component = renderer.getTableCellRendererComponent(
JTable.this, null, false, false,
row, column);
return new AccessibleJTableCell(JTable.this, row, column,
getAccessibleIndexAt(row, column));
}
return null;
}
/**
* Returns the number of accessible children in the object. If all
* of the children of this object implement <code>Accessible,
* then this method should return the number of children of this object.
*
* @return the number of accessible children in the object
*/
public int getAccessibleChildrenCount() {
return (JTable.this.getColumnCount() * JTable.this.getRowCount());
}
/**
* Returns the nth <code>Accessible child of the object.
*
* @param i zero-based index of child
* @return the nth Accessible child of the object
*/
public Accessible getAccessibleChild(int i) {
if (i < 0 || i >= getAccessibleChildrenCount()) {
return null;
} else {
// children increase across, and then down, for tables
// (arbitrary decision)
int column = getAccessibleColumnAtIndex(i);
int row = getAccessibleRowAtIndex(i);
TableColumn aColumn = getColumnModel().getColumn(column);
TableCellRenderer renderer = aColumn.getCellRenderer();
if (renderer == null) {
Class<?> columnClass = getColumnClass(column);
renderer = getDefaultRenderer(columnClass);
}
Component component = renderer.getTableCellRendererComponent(
JTable.this, null, false, false,
row, column);
return new AccessibleJTableCell(JTable.this, row, column,
getAccessibleIndexAt(row, column));
}
}
// AccessibleSelection support
/**
* Returns the number of <code>Accessible children
* currently selected.
* If no children are selected, the return value will be 0.
*
* @return the number of items currently selected
*/
public int getAccessibleSelectionCount() {
int rowsSel = JTable.this.getSelectedRowCount();
int colsSel = JTable.this.getSelectedColumnCount();
if (JTable.this.cellSelectionEnabled) { // a contiguous block
return rowsSel * colsSel;
} else {
// a column swath and a row swath, with a shared block
if (JTable.this.getRowSelectionAllowed() &&
JTable.this.getColumnSelectionAllowed()) {
return rowsSel * JTable.this.getColumnCount() +
colsSel * JTable.this.getRowCount() -
rowsSel * colsSel;
// just one or more rows in selection
} else if (JTable.this.getRowSelectionAllowed()) {
return rowsSel * JTable.this.getColumnCount();
// just one or more rows in selection
} else if (JTable.this.getColumnSelectionAllowed()) {
return colsSel * JTable.this.getRowCount();
} else {
return 0; // JTable doesn't allow selections
}
}
}
/**
* Returns an <code>Accessible representing the
* specified selected child in the object. If there
* isn't a selection, or there are fewer children selected
* than the integer passed in, the return
* value will be <code>null.
* <p>Note that the index represents the i-th selected child, which
* is different from the i-th child.
*
* @param i the zero-based index of selected children
* @return the i-th selected child
* @see #getAccessibleSelectionCount
*/
public Accessible getAccessibleSelection(int i) {
if (i < 0 || i > getAccessibleSelectionCount()) {
return null;
}
int rowsSel = JTable.this.getSelectedRowCount();
int colsSel = JTable.this.getSelectedColumnCount();
int rowIndicies[] = getSelectedRows();
int colIndicies[] = getSelectedColumns();
int ttlCols = JTable.this.getColumnCount();
int ttlRows = JTable.this.getRowCount();
int r;
int c;
if (JTable.this.cellSelectionEnabled) { // a contiguous block
r = rowIndicies[i / colsSel];
c = colIndicies[i % colsSel];
return getAccessibleChild((r * ttlCols) + c);
} else {
// a column swath and a row swath, with a shared block
if (JTable.this.getRowSelectionAllowed() &&
JTable.this.getColumnSelectionAllowed()) {
// Situation:
// We have a table, like the 6x3 table below,
// wherein three colums and one row selected
// (selected cells marked with "*", unselected "0"):
//
// 0 * 0 * * 0
// * * * * * *
// 0 * 0 * * 0
//
// State machine below walks through the array of
// selected rows in two states: in a selected row,
// and not in one; continuing until we are in a row
// in which the ith selection exists. Then we return
// the appropriate cell. In the state machine, we
// always do rows above the "current" selected row first,
// then the cells in the selected row. If we're done
// with the state machine before finding the requested
// selected child, we handle the rows below the last
// selected row at the end.
//
int curIndex = i;
final int IN_ROW = 0;
final int NOT_IN_ROW = 1;
int state = (rowIndicies[0] == 0 ? IN_ROW : NOT_IN_ROW);
int j = 0;
int prevRow = -1;
while (j < rowIndicies.length) {
switch (state) {
case IN_ROW: // on individual row full of selections
if (curIndex < ttlCols) { // it's here!
c = curIndex % ttlCols;
r = rowIndicies[j];
return getAccessibleChild((r * ttlCols) + c);
} else { // not here
curIndex -= ttlCols;
}
// is the next row in table selected or not?
if (j + 1 == rowIndicies.length ||
rowIndicies[j] != rowIndicies[j+1] - 1) {
state = NOT_IN_ROW;
prevRow = rowIndicies[j];
}
j++; // we didn't return earlier, so go to next row
break;
case NOT_IN_ROW: // sparse bunch of rows of selections
if (curIndex <
(colsSel * (rowIndicies[j] -
(prevRow == -1 ? 0 : (prevRow + 1))))) {
// it's here!
c = colIndicies[curIndex % colsSel];
r = (j > 0 ? rowIndicies[j-1] + 1 : 0)
+ curIndex / colsSel;
return getAccessibleChild((r * ttlCols) + c);
} else { // not here
curIndex -= colsSel * (rowIndicies[j] -
(prevRow == -1 ? 0 : (prevRow + 1)));
}
state = IN_ROW;
break;
}
}
// we got here, so we didn't find it yet; find it in
// the last sparse bunch of rows
if (curIndex <
(colsSel * (ttlRows -
(prevRow == -1 ? 0 : (prevRow + 1))))) { // it's here!
c = colIndicies[curIndex % colsSel];
r = rowIndicies[j-1] + curIndex / colsSel + 1;
return getAccessibleChild((r * ttlCols) + c);
} else { // not here
// we shouldn't get to this spot in the code!
// System.out.println("Bug in AccessibleJTable.getAccessibleSelection()");
}
// one or more rows selected
} else if (JTable.this.getRowSelectionAllowed()) {
c = i % ttlCols;
r = rowIndicies[i / ttlCols];
return getAccessibleChild((r * ttlCols) + c);
// one or more columns selected
} else if (JTable.this.getColumnSelectionAllowed()) {
c = colIndicies[i % colsSel];
r = i / colsSel;
return getAccessibleChild((r * ttlCols) + c);
}
}
return null;
}
/**
* Determines if the current child of this object is selected.
*
* @param i the zero-based index of the child in this
* <code>Accessible object
* @return true if the current child of this object is selected
* @see AccessibleContext#getAccessibleChild
*/
public boolean isAccessibleChildSelected(int i) {
int column = getAccessibleColumnAtIndex(i);
int row = getAccessibleRowAtIndex(i);
return JTable.this.isCellSelected(row, column);
}
/**
* Adds the specified <code>Accessible child of the
* object to the object's selection. If the object supports
* multiple selections, the specified child is added to
* any existing selection, otherwise
* it replaces any existing selection in the object. If the
* specified child is already selected, this method has no effect.
* <p>
* This method only works on <code>JTables which have
* individual cell selection enabled.
*
* @param i the zero-based index of the child
* @see AccessibleContext#getAccessibleChild
*/
public void addAccessibleSelection(int i) {
// TIGER - 4495286
int column = getAccessibleColumnAtIndex(i);
int row = getAccessibleRowAtIndex(i);
JTable.this.changeSelection(row, column, true, false);
}
/**
* Removes the specified child of the object from the object's
* selection. If the specified item isn't currently selected, this
* method has no effect.
* <p>
* This method only works on <code>JTables which have
* individual cell selection enabled.
*
* @param i the zero-based index of the child
* @see AccessibleContext#getAccessibleChild
*/
public void removeAccessibleSelection(int i) {
if (JTable.this.cellSelectionEnabled) {
int column = getAccessibleColumnAtIndex(i);
int row = getAccessibleRowAtIndex(i);
JTable.this.removeRowSelectionInterval(row, row);
JTable.this.removeColumnSelectionInterval(column, column);
}
}
/**
* Clears the selection in the object, so that no children in the
* object are selected.
*/
public void clearAccessibleSelection() {
JTable.this.clearSelection();
}
/**
* Causes every child of the object to be selected, but only
* if the <code>JTable supports multiple selections,
* and if individual cell selection is enabled.
*/
public void selectAllAccessibleSelection() {
if (JTable.this.cellSelectionEnabled) {
JTable.this.selectAll();
}
}
// begin AccessibleExtendedTable implementation -------------
/**
* Returns the row number of an index in the table.
*
* @param index the zero-based index in the table
* @return the zero-based row of the table if one exists;
* otherwise -1.
* @since 1.4
*/
public int getAccessibleRow(int index) {
return getAccessibleRowAtIndex(index);
}
/**
* Returns the column number of an index in the table.
*
* @param index the zero-based index in the table
* @return the zero-based column of the table if one exists;
* otherwise -1.
* @since 1.4
*/
public int getAccessibleColumn(int index) {
return getAccessibleColumnAtIndex(index);
}
/**
* Returns the index at a row and column in the table.
*
* @param r zero-based row of the table
* @param c zero-based column of the table
* @return the zero-based index in the table if one exists;
* otherwise -1.
* @since 1.4
*/
public int getAccessibleIndex(int r, int c) {
return getAccessibleIndexAt(r, c);
}
// end of AccessibleExtendedTable implementation ------------
// start of AccessibleTable implementation ------------------
private Accessible caption;
private Accessible summary;
private Accessible [] rowDescription;
private Accessible [] columnDescription;
/**
* Gets the <code>AccessibleTable associated with this
* object. In the implementation of the Java Accessibility
* API for this class, return this object, which is responsible
* for implementing the <code>AccessibleTables interface
* on behalf of itself.
*
* @return this object
* @since 1.3
*/
public AccessibleTable getAccessibleTable() {
return this;
}
/**
* Returns the caption for the table.
*
* @return the caption for the table
* @since 1.3
*/
public Accessible getAccessibleCaption() {
return this.caption;
}
/**
* Sets the caption for the table.
*
* @param a the caption for the table
* @since 1.3
*/
public void setAccessibleCaption(Accessible a) {
Accessible oldCaption = caption;
this.caption = a;
firePropertyChange(AccessibleContext.ACCESSIBLE_TABLE_CAPTION_CHANGED,
oldCaption, this.caption);
}
/**
* Returns the summary description of the table.
*
* @return the summary description of the table
* @since 1.3
*/
public Accessible getAccessibleSummary() {
return this.summary;
}
/**
* Sets the summary description of the table.
*
* @param a the summary description of the table
* @since 1.3
*/
public void setAccessibleSummary(Accessible a) {
Accessible oldSummary = summary;
this.summary = a;
firePropertyChange(AccessibleContext.ACCESSIBLE_TABLE_SUMMARY_CHANGED,
oldSummary, this.summary);
}
/*
* Returns the total number of rows in this table.
*
* @return the total number of rows in this table
*/
public int getAccessibleRowCount() {
return JTable.this.getRowCount();
}
/*
* Returns the total number of columns in the table.
*
* @return the total number of columns in the table
*/
public int getAccessibleColumnCount() {
return JTable.this.getColumnCount();
}
/*
* Returns the <code>Accessible at a specified row
* and column in the table.
*
* @param r zero-based row of the table
* @param c zero-based column of the table
* @return the <code>Accessible at the specified row and column
* in the table
*/
public Accessible getAccessibleAt(int r, int c) {
return getAccessibleChild((r * getAccessibleColumnCount()) + c);
}
/**
* Returns the number of rows occupied by the <code>Accessible
* at a specified row and column in the table.
*
* @return the number of rows occupied by the <code>Accessible
* at a specified row and column in the table
* @since 1.3
*/
public int getAccessibleRowExtentAt(int r, int c) {
return 1;
}
/**
* Returns the number of columns occupied by the
* <code>Accessible at a given (row, column).
*
* @return the number of columns occupied by the <code>Accessible
* at a specified row and column in the table
* @since 1.3
*/
public int getAccessibleColumnExtentAt(int r, int c) {
return 1;
}
/**
* Returns the row headers as an <code>AccessibleTable.
*
* @return an <code>AccessibleTable representing the row
* headers
* @since 1.3
*/
public AccessibleTable getAccessibleRowHeader() {
// row headers are not supported
return null;
}
/**
* Sets the row headers as an <code>AccessibleTable.
*
* @param a an <code>AccessibleTable representing the row
* headers
* @since 1.3
*/
public void setAccessibleRowHeader(AccessibleTable a) {
// row headers are not supported
}
/**
* Returns the column headers as an <code>AccessibleTable.
*
* @return an <code>AccessibleTable representing the column
* headers, or <code>null if the table header is
* <code>null
* @since 1.3
*/
public AccessibleTable getAccessibleColumnHeader() {
JTableHeader header = JTable.this.getTableHeader();
return header == null ? null : new AccessibleTableHeader(header);
}
/*
* Private class representing a table column header
*/
private class AccessibleTableHeader implements AccessibleTable {
private JTableHeader header;
private TableColumnModel headerModel;
AccessibleTableHeader(JTableHeader header) {
this.header = header;
this.headerModel = header.getColumnModel();
}
/**
* Returns the caption for the table.
*
* @return the caption for the table
*/
public Accessible getAccessibleCaption() { return null; }
/**
* Sets the caption for the table.
*
* @param a the caption for the table
*/
public void setAccessibleCaption(Accessible a) {}
/**
* Returns the summary description of the table.
*
* @return the summary description of the table
*/
public Accessible getAccessibleSummary() { return null; }
/**
* Sets the summary description of the table
*
* @param a the summary description of the table
*/
public void setAccessibleSummary(Accessible a) {}
/**
* Returns the number of rows in the table.
*
* @return the number of rows in the table
*/
public int getAccessibleRowCount() { return 1; }
/**
* Returns the number of columns in the table.
*
* @return the number of columns in the table
*/
public int getAccessibleColumnCount() {
return headerModel.getColumnCount();
}
/**
* Returns the Accessible at a specified row and column
* in the table.
*
* @param row zero-based row of the table
* @param column zero-based column of the table
* @return the Accessible at the specified row and column
*/
public Accessible getAccessibleAt(int row, int column) {
// TIGER - 4715503
TableColumn aColumn = headerModel.getColumn(column);
TableCellRenderer renderer = aColumn.getHeaderRenderer();
if (renderer == null) {
renderer = header.getDefaultRenderer();
}
Component component = renderer.getTableCellRendererComponent(
header.getTable(),
aColumn.getHeaderValue(), false, false,
-1, column);
return new AccessibleJTableHeaderCell(row, column,
JTable.this.getTableHeader(),
component);
}
/**
* Returns the number of rows occupied by the Accessible at
* a specified row and column in the table.
*
* @return the number of rows occupied by the Accessible at a
* given specified (row, column)
*/
public int getAccessibleRowExtentAt(int r, int c) { return 1; }
/**
* Returns the number of columns occupied by the Accessible at
* a specified row and column in the table.
*
* @return the number of columns occupied by the Accessible at a
* given specified row and column
*/
public int getAccessibleColumnExtentAt(int r, int c) { return 1; }
/**
* Returns the row headers as an AccessibleTable.
*
* @return an AccessibleTable representing the row
* headers
*/
public AccessibleTable getAccessibleRowHeader() { return null; }
/**
* Sets the row headers.
*
* @param table an AccessibleTable representing the
* row headers
*/
public void setAccessibleRowHeader(AccessibleTable table) {}
/**
* Returns the column headers as an AccessibleTable.
*
* @return an AccessibleTable representing the column
* headers
*/
public AccessibleTable getAccessibleColumnHeader() { return null; }
/**
* Sets the column headers.
*
* @param table an AccessibleTable representing the
* column headers
* @since 1.3
*/
public void setAccessibleColumnHeader(AccessibleTable table) {}
/**
* Returns the description of the specified row in the table.
*
* @param r zero-based row of the table
* @return the description of the row
* @since 1.3
*/
public Accessible getAccessibleRowDescription(int r) { return null; }
/**
* Sets the description text of the specified row of the table.
*
* @param r zero-based row of the table
* @param a the description of the row
* @since 1.3
*/
public void setAccessibleRowDescription(int r, Accessible a) {}
/**
* Returns the description text of the specified column in the table.
*
* @param c zero-based column of the table
* @return the text description of the column
* @since 1.3
*/
public Accessible getAccessibleColumnDescription(int c) { return null; }
/**
* Sets the description text of the specified column in the table.
*
* @param c zero-based column of the table
* @param a the text description of the column
* @since 1.3
*/
public void setAccessibleColumnDescription(int c, Accessible a) {}
/**
* Returns a boolean value indicating whether the accessible at
* a specified row and column is selected.
*
* @param r zero-based row of the table
* @param c zero-based column of the table
* @return the boolean value true if the accessible at the
* row and column is selected. Otherwise, the boolean value
* false
* @since 1.3
*/
public boolean isAccessibleSelected(int r, int c) { return false; }
/**
* Returns a boolean value indicating whether the specified row
* is selected.
*
* @param r zero-based row of the table
* @return the boolean value true if the specified row is selected.
* Otherwise, false.
* @since 1.3
*/
public boolean isAccessibleRowSelected(int r) { return false; }
/**
* Returns a boolean value indicating whether the specified column
* is selected.
*
* @param c zero-based column of the table
* @return the boolean value true if the specified column is selected.
* Otherwise, false.
* @since 1.3
*/
public boolean isAccessibleColumnSelected(int c) { return false; }
/**
* Returns the selected rows in a table.
*
* @return an array of selected rows where each element is a
* zero-based row of the table
* @since 1.3
*/
public int [] getSelectedAccessibleRows() { return new int[0]; }
/**
* Returns the selected columns in a table.
*
* @return an array of selected columns where each element is a
* zero-based column of the table
* @since 1.3
*/
public int [] getSelectedAccessibleColumns() { return new int[0]; }
}
/**
* Sets the column headers as an <code>AccessibleTable.
*
* @param a an <code>AccessibleTable representing the
* column headers
* @since 1.3
*/
public void setAccessibleColumnHeader(AccessibleTable a) {
// XXX not implemented
}
/**
* Returns the description of the specified row in the table.
*
* @param r zero-based row of the table
* @return the description of the row
* @since 1.3
*/
public Accessible getAccessibleRowDescription(int r) {
if (r < 0 || r >= getAccessibleRowCount()) {
throw new IllegalArgumentException(Integer.toString(r));
}
if (rowDescription == null) {
return null;
} else {
return rowDescription[r];
}
}
/**
* Sets the description text of the specified row of the table.
*
* @param r zero-based row of the table
* @param a the description of the row
* @since 1.3
*/
public void setAccessibleRowDescription(int r, Accessible a) {
if (r < 0 || r >= getAccessibleRowCount()) {
throw new IllegalArgumentException(Integer.toString(r));
}
if (rowDescription == null) {
int numRows = getAccessibleRowCount();
rowDescription = new Accessible[numRows];
}
rowDescription[r] = a;
}
/**
* Returns the description of the specified column in the table.
*
* @param c zero-based column of the table
* @return the description of the column
* @since 1.3
*/
public Accessible getAccessibleColumnDescription(int c) {
if (c < 0 || c >= getAccessibleColumnCount()) {
throw new IllegalArgumentException(Integer.toString(c));
}
if (columnDescription == null) {
return null;
} else {
return columnDescription[c];
}
}
/**
* Sets the description text of the specified column of the table.
*
* @param c zero-based column of the table
* @param a the description of the column
* @since 1.3
*/
public void setAccessibleColumnDescription(int c, Accessible a) {
if (c < 0 || c >= getAccessibleColumnCount()) {
throw new IllegalArgumentException(Integer.toString(c));
}
if (columnDescription == null) {
int numColumns = getAccessibleColumnCount();
columnDescription = new Accessible[numColumns];
}
columnDescription[c] = a;
}
/**
* Returns a boolean value indicating whether the accessible at a
* given (row, column) is selected.
*
* @param r zero-based row of the table
* @param c zero-based column of the table
* @return the boolean value true if the accessible at (row, column)
* is selected; otherwise, the boolean value false
* @since 1.3
*/
public boolean isAccessibleSelected(int r, int c) {
return JTable.this.isCellSelected(r, c);
}
/**
* Returns a boolean value indicating whether the specified row
* is selected.
*
* @param r zero-based row of the table
* @return the boolean value true if the specified row is selected;
* otherwise, false
* @since 1.3
*/
public boolean isAccessibleRowSelected(int r) {
return JTable.this.isRowSelected(r);
}
/**
* Returns a boolean value indicating whether the specified column
* is selected.
*
* @param c zero-based column of the table
* @return the boolean value true if the specified column is selected;
* otherwise, false
* @since 1.3
*/
public boolean isAccessibleColumnSelected(int c) {
return JTable.this.isColumnSelected(c);
}
/**
* Returns the selected rows in a table.
*
* @return an array of selected rows where each element is a
* zero-based row of the table
* @since 1.3
*/
public int [] getSelectedAccessibleRows() {
return JTable.this.getSelectedRows();
}
/**
* Returns the selected columns in a table.
*
* @return an array of selected columns where each element is a
* zero-based column of the table
* @since 1.3
*/
public int [] getSelectedAccessibleColumns() {
return JTable.this.getSelectedColumns();
}
/**
* Returns the row at a given index into the table.
*
* @param i zero-based index into the table
* @return the row at a given index
* @since 1.3
*/
public int getAccessibleRowAtIndex(int i) {
int columnCount = getAccessibleColumnCount();
if (columnCount == 0) {
return -1;
} else {
return (i / columnCount);
}
}
/**
* Returns the column at a given index into the table.
*
* @param i zero-based index into the table
* @return the column at a given index
* @since 1.3
*/
public int getAccessibleColumnAtIndex(int i) {
int columnCount = getAccessibleColumnCount();
if (columnCount == 0) {
return -1;
} else {
return (i % columnCount);
}
}
/**
* Returns the index at a given (row, column) in the table.
*
* @param r zero-based row of the table
* @param c zero-based column of the table
* @return the index into the table
* @since 1.3
*/
public int getAccessibleIndexAt(int r, int c) {
return ((r * getAccessibleColumnCount()) + c);
}
// end of AccessibleTable implementation --------------------
/**
* The class provides an implementation of the Java Accessibility
* API appropriate to table cells.
*/
protected class AccessibleJTableCell extends AccessibleContext
implements Accessible, AccessibleComponent {
private JTable parent;
private int row;
private int column;
private int index;
/**
* Constructs an <code>AccessibleJTableHeaderEntry.
* @since 1.4
*/
public AccessibleJTableCell(JTable t, int r, int c, int i) {
parent = t;
row = r;
column = c;
index = i;
this.setAccessibleParent(parent);
}
/**
* Gets the <code>AccessibleContext associated with this
* component. In the implementation of the Java Accessibility
* API for this class, return this object, which is its own
* <code>AccessibleContext.
*
* @return this object
*/
public AccessibleContext getAccessibleContext() {
return this;
}
/**
* Gets the AccessibleContext for the table cell renderer.
*
* @return the <code>AccessibleContext for the table
* cell renderer if one exists;
* otherwise, returns <code>null.
* @since 1.6
*/
protected AccessibleContext getCurrentAccessibleContext() {
TableColumn aColumn = getColumnModel().getColumn(column);
TableCellRenderer renderer = aColumn.getCellRenderer();
if (renderer == null) {
Class<?> columnClass = getColumnClass(column);
renderer = getDefaultRenderer(columnClass);
}
Component component = renderer.getTableCellRendererComponent(
JTable.this, getValueAt(row, column),
false, false, row, column);
if (component instanceof Accessible) {
return component.getAccessibleContext();
} else {
return null;
}
}
/**
* Gets the table cell renderer component.
*
* @return the table cell renderer component if one exists;
* otherwise, returns <code>null.
* @since 1.6
*/
protected Component getCurrentComponent() {
TableColumn aColumn = getColumnModel().getColumn(column);
TableCellRenderer renderer = aColumn.getCellRenderer();
if (renderer == null) {
Class<?> columnClass = getColumnClass(column);
renderer = getDefaultRenderer(columnClass);
}
return renderer.getTableCellRendererComponent(
JTable.this, null, false, false,
row, column);
}
// AccessibleContext methods
/**
* Gets the accessible name of this object.
*
* @return the localized name of the object; <code>null
* if this object does not have a name
*/
public String getAccessibleName() {
AccessibleContext ac = getCurrentAccessibleContext();
if (ac != null) {
String name = ac.getAccessibleName();
if ((name != null) && (name != "")) {
// return the cell renderer's AccessibleName
return name;
}
}
if ((accessibleName != null) && (accessibleName != "")) {
return accessibleName;
} else {
// fall back to the client property
return (String)getClientProperty(AccessibleContext.ACCESSIBLE_NAME_PROPERTY);
}
}
/**
* Sets the localized accessible name of this object.
*
* @param s the new localized name of the object
*/
public void setAccessibleName(String s) {
AccessibleContext ac = getCurrentAccessibleContext();
if (ac != null) {
ac.setAccessibleName(s);
} else {
super.setAccessibleName(s);
}
}
//
// *** should check toolTip text for desc. (needs MouseEvent)
//
/**
* Gets the accessible description of this object.
*
* @return the localized description of the object;
* <code>null if this object does not have
* a description
*/
public String getAccessibleDescription() {
AccessibleContext ac = getCurrentAccessibleContext();
if (ac != null) {
return ac.getAccessibleDescription();
} else {
return super.getAccessibleDescription();
}
}
/**
* Sets the accessible description of this object.
*
* @param s the new localized description of the object
*/
public void setAccessibleDescription(String s) {
AccessibleContext ac = getCurrentAccessibleContext();
if (ac != null) {
ac.setAccessibleDescription(s);
} else {
super.setAccessibleDescription(s);
}
}
/**
* Gets the role of this object.
*
* @return an instance of <code>AccessibleRole
* describing the role of the object
* @see AccessibleRole
*/
public AccessibleRole getAccessibleRole() {
AccessibleContext ac = getCurrentAccessibleContext();
if (ac != null) {
return ac.getAccessibleRole();
} else {
return AccessibleRole.UNKNOWN;
}
}
/**
* Gets the state set of this object.
*
* @return an instance of <code>AccessibleStateSet
* containing the current state set of the object
* @see AccessibleState
*/
public AccessibleStateSet getAccessibleStateSet() {
AccessibleContext ac = getCurrentAccessibleContext();
AccessibleStateSet as = null;
if (ac != null) {
as = ac.getAccessibleStateSet();
}
if (as == null) {
as = new AccessibleStateSet();
}
Rectangle rjt = JTable.this.getVisibleRect();
Rectangle rcell = JTable.this.getCellRect(row, column, false);
if (rjt.intersects(rcell)) {
as.add(AccessibleState.SHOWING);
} else {
if (as.contains(AccessibleState.SHOWING)) {
as.remove(AccessibleState.SHOWING);
}
}
if (parent.isCellSelected(row, column)) {
as.add(AccessibleState.SELECTED);
} else if (as.contains(AccessibleState.SELECTED)) {
as.remove(AccessibleState.SELECTED);
}
if ((row == getSelectedRow()) && (column == getSelectedColumn())) {
as.add(AccessibleState.ACTIVE);
}
as.add(AccessibleState.TRANSIENT);
return as;
}
/**
* Gets the <code>Accessible parent of this object.
*
* @return the Accessible parent of this object;
* <code>null if this object does not
* have an <code>Accessible parent
*/
public Accessible getAccessibleParent() {
return parent;
}
/**
* Gets the index of this object in its accessible parent.
*
* @return the index of this object in its parent; -1 if this
* object does not have an accessible parent
* @see #getAccessibleParent
*/
public int getAccessibleIndexInParent() {
return index;
}
/**
* Returns the number of accessible children in the object.
*
* @return the number of accessible children in the object
*/
public int getAccessibleChildrenCount() {
AccessibleContext ac = getCurrentAccessibleContext();
if (ac != null) {
return ac.getAccessibleChildrenCount();
} else {
return 0;
}
}
/**
* Returns the specified <code>Accessible child of the
* object.
*
* @param i zero-based index of child
* @return the <code>Accessible child of the object
*/
public Accessible getAccessibleChild(int i) {
AccessibleContext ac = getCurrentAccessibleContext();
if (ac != null) {
Accessible accessibleChild = ac.getAccessibleChild(i);
ac.setAccessibleParent(this);
return accessibleChild;
} else {
return null;
}
}
/**
* Gets the locale of the component. If the component
* does not have a locale, then the locale of its parent
* is returned.
*
* @return this component's locale; if this component does
* not have a locale, the locale of its parent is returned
* @exception IllegalComponentStateException if the
* <code>Component does not have its own locale
* and has not yet been added to a containment hierarchy
* such that the locale can be determined from the
* containing parent
* @see #setLocale
*/
public Locale getLocale() {
AccessibleContext ac = getCurrentAccessibleContext();
if (ac != null) {
return ac.getLocale();
} else {
return null;
}
}
/**
* Adds a <code>PropertyChangeListener to the listener list.
* The listener is registered for all properties.
*
* @param l the <code>PropertyChangeListener
* to be added
*/
public void addPropertyChangeListener(PropertyChangeListener l) {
AccessibleContext ac = getCurrentAccessibleContext();
if (ac != null) {
ac.addPropertyChangeListener(l);
} else {
super.addPropertyChangeListener(l);
}
}
/**
* Removes a <code>PropertyChangeListener from the
* listener list. This removes a <code>PropertyChangeListener
* that was registered for all properties.
*
* @param l the <code>PropertyChangeListener
* to be removed
*/
public void removePropertyChangeListener(PropertyChangeListener l) {
AccessibleContext ac = getCurrentAccessibleContext();
if (ac != null) {
ac.removePropertyChangeListener(l);
} else {
super.removePropertyChangeListener(l);
}
}
/**
* Gets the <code>AccessibleAction associated with this
* object if one exists. Otherwise returns <code>null.
*
* @return the <code>AccessibleAction, or null
*/
public AccessibleAction getAccessibleAction() {
return getCurrentAccessibleContext().getAccessibleAction();
}
/**
* Gets the <code>AccessibleComponent associated with
* this object if one exists. Otherwise returns <code>null.
*
* @return the <code>AccessibleComponent, or
* <code>null
*/
public AccessibleComponent getAccessibleComponent() {
return this; // to override getBounds()
}
/**
* Gets the <code>AccessibleSelection associated with
* this object if one exists. Otherwise returns <code>null.
*
* @return the <code>AccessibleSelection, or
* <code>null
*/
public AccessibleSelection getAccessibleSelection() {
return getCurrentAccessibleContext().getAccessibleSelection();
}
/**
* Gets the <code>AccessibleText associated with this
* object if one exists. Otherwise returns <code>null.
*
* @return the <code>AccessibleText, or null
*/
public AccessibleText getAccessibleText() {
return getCurrentAccessibleContext().getAccessibleText();
}
/**
* Gets the <code>AccessibleValue associated with
* this object if one exists. Otherwise returns <code>null.
*
* @return the <code>AccessibleValue, or null
*/
public AccessibleValue getAccessibleValue() {
return getCurrentAccessibleContext().getAccessibleValue();
}
// AccessibleComponent methods
/**
* Gets the background color of this object.
*
* @return the background color, if supported, of the object;
* otherwise, <code>null
*/
public Color getBackground() {
AccessibleContext ac = getCurrentAccessibleContext();
if (ac instanceof AccessibleComponent) {
return ((AccessibleComponent) ac).getBackground();
} else {
Component c = getCurrentComponent();
if (c != null) {
return c.getBackground();
} else {
return null;
}
}
}
/**
* Sets the background color of this object.
*
* @param c the new <code>Color for the background
*/
public void setBackground(Color c) {
AccessibleContext ac = getCurrentAccessibleContext();
if (ac instanceof AccessibleComponent) {
((AccessibleComponent) ac).setBackground(c);
} else {
Component cp = getCurrentComponent();
if (cp != null) {
cp.setBackground(c);
}
}
}
/**
* Gets the foreground color of this object.
*
* @return the foreground color, if supported, of the object;
* otherwise, <code>null
*/
public Color getForeground() {
AccessibleContext ac = getCurrentAccessibleContext();
if (ac instanceof AccessibleComponent) {
return ((AccessibleComponent) ac).getForeground();
} else {
Component c = getCurrentComponent();
if (c != null) {
return c.getForeground();
} else {
return null;
}
}
}
/**
* Sets the foreground color of this object.
*
* @param c the new <code>Color for the foreground
*/
public void setForeground(Color c) {
AccessibleContext ac = getCurrentAccessibleContext();
if (ac instanceof AccessibleComponent) {
((AccessibleComponent) ac).setForeground(c);
} else {
Component cp = getCurrentComponent();
if (cp != null) {
cp.setForeground(c);
}
}
}
/**
* Gets the <code>Cursor of this object.
*
* @return the <code>Cursor, if supported,
* of the object; otherwise, <code>null
*/
public Cursor getCursor() {
AccessibleContext ac = getCurrentAccessibleContext();
if (ac instanceof AccessibleComponent) {
return ((AccessibleComponent) ac).getCursor();
} else {
Component c = getCurrentComponent();
if (c != null) {
return c.getCursor();
} else {
Accessible ap = getAccessibleParent();
if (ap instanceof AccessibleComponent) {
return ((AccessibleComponent) ap).getCursor();
} else {
return null;
}
}
}
}
/**
* Sets the <code>Cursor of this object.
*
* @param c the new <code>Cursor for the object
*/
public void setCursor(Cursor c) {
AccessibleContext ac = getCurrentAccessibleContext();
if (ac instanceof AccessibleComponent) {
((AccessibleComponent) ac).setCursor(c);
} else {
Component cp = getCurrentComponent();
if (cp != null) {
cp.setCursor(c);
}
}
}
/**
* Gets the <code>Font of this object.
*
* @return the <code>Font,if supported,
* for the object; otherwise, <code>null
*/
public Font getFont() {
AccessibleContext ac = getCurrentAccessibleContext();
if (ac instanceof AccessibleComponent) {
return ((AccessibleComponent) ac).getFont();
} else {
Component c = getCurrentComponent();
if (c != null) {
return c.getFont();
} else {
return null;
}
}
}
/**
* Sets the <code>Font of this object.
*
* @param f the new <code>Font for the object
*/
public void setFont(Font f) {
AccessibleContext ac = getCurrentAccessibleContext();
if (ac instanceof AccessibleComponent) {
((AccessibleComponent) ac).setFont(f);
} else {
Component c = getCurrentComponent();
if (c != null) {
c.setFont(f);
}
}
}
/**
* Gets the <code>FontMetrics of this object.
*
* @param f the <code>Font
* @return the <code>FontMetrics object, if supported;
* otherwise <code>null
* @see #getFont
*/
public FontMetrics getFontMetrics(Font f) {
AccessibleContext ac = getCurrentAccessibleContext();
if (ac instanceof AccessibleComponent) {
return ((AccessibleComponent) ac).getFontMetrics(f);
} else {
Component c = getCurrentComponent();
if (c != null) {
return c.getFontMetrics(f);
} else {
return null;
}
}
}
/**
* Determines if the object is enabled.
*
* @return true if object is enabled; otherwise, false
*/
public boolean isEnabled() {
AccessibleContext ac = getCurrentAccessibleContext();
if (ac instanceof AccessibleComponent) {
return ((AccessibleComponent) ac).isEnabled();
} else {
Component c = getCurrentComponent();
if (c != null) {
return c.isEnabled();
} else {
return false;
}
}
}
/**
* Sets the enabled state of the object.
*
* @param b if true, enables this object; otherwise, disables it
*/
public void setEnabled(boolean b) {
AccessibleContext ac = getCurrentAccessibleContext();
if (ac instanceof AccessibleComponent) {
((AccessibleComponent) ac).setEnabled(b);
} else {
Component c = getCurrentComponent();
if (c != null) {
c.setEnabled(b);
}
}
}
/**
* Determines if this object is visible. Note: this means that the
* object intends to be visible; however, it may not in fact be
* showing on the screen because one of the objects that this object
* is contained by is not visible. To determine if an object is
* showing on the screen, use <code>isShowing.
*
* @return true if object is visible; otherwise, false
*/
public boolean isVisible() {
AccessibleContext ac = getCurrentAccessibleContext();
if (ac instanceof AccessibleComponent) {
return ((AccessibleComponent) ac).isVisible();
} else {
Component c = getCurrentComponent();
if (c != null) {
return c.isVisible();
} else {
return false;
}
}
}
/**
* Sets the visible state of the object.
*
* @param b if true, shows this object; otherwise, hides it
*/
public void setVisible(boolean b) {
AccessibleContext ac = getCurrentAccessibleContext();
if (ac instanceof AccessibleComponent) {
((AccessibleComponent) ac).setVisible(b);
} else {
Component c = getCurrentComponent();
if (c != null) {
c.setVisible(b);
}
}
}
/**
* Determines if the object is showing. This is determined
* by checking the visibility of the object and ancestors
* of the object. Note: this will return true even if the
* object is obscured by another (for example,
* it happens to be underneath a menu that was pulled down).
*
* @return true if the object is showing; otherwise, false
*/
public boolean isShowing() {
AccessibleContext ac = getCurrentAccessibleContext();
if (ac instanceof AccessibleComponent) {
if (ac.getAccessibleParent() != null) {
return ((AccessibleComponent) ac).isShowing();
} else {
// Fixes 4529616 - AccessibleJTableCell.isShowing()
// returns false when the cell on the screen
// if no parent
return isVisible();
}
} else {
Component c = getCurrentComponent();
if (c != null) {
return c.isShowing();
} else {
return false;
}
}
}
/**
* Checks whether the specified point is within this
* object's bounds, where the point's x and y coordinates
* are defined to be relative to the coordinate system of
* the object.
*
* @param p the <code>Point relative to the
* coordinate system of the object
* @return true if object contains <code>Point;
* otherwise false
*/
public boolean contains(Point p) {
AccessibleContext ac = getCurrentAccessibleContext();
if (ac instanceof AccessibleComponent) {
Rectangle r = ((AccessibleComponent) ac).getBounds();
return r.contains(p);
} else {
Component c = getCurrentComponent();
if (c != null) {
Rectangle r = c.getBounds();
return r.contains(p);
} else {
return getBounds().contains(p);
}
}
}
/**
* Returns the location of the object on the screen.
*
* @return location of object on screen -- can be
* <code>null if this object is not on the screen
*/
public Point getLocationOnScreen() {
if (parent != null && parent.isShowing()) {
Point parentLocation = parent.getLocationOnScreen();
Point componentLocation = getLocation();
componentLocation.translate(parentLocation.x, parentLocation.y);
return componentLocation;
} else {
return null;
}
}
/**
* Gets the location of the object relative to the parent
* in the form of a point specifying the object's
* top-left corner in the screen's coordinate space.
*
* @return an instance of <code>Point representing
* the top-left corner of the object's bounds in the
* coordinate space of the screen; <code>null if
* this object or its parent are not on the screen
*/
public Point getLocation() {
if (parent != null) {
Rectangle r = parent.getCellRect(row, column, false);
if (r != null) {
return r.getLocation();
}
}
return null;
}
/**
* Sets the location of the object relative to the parent.
*/
public void setLocation(Point p) {
// if ((parent != null) && (parent.contains(p))) {
// ensureIndexIsVisible(indexInParent);
// }
}
public Rectangle getBounds() {
if (parent != null) {
return parent.getCellRect(row, column, false);
} else {
return null;
}
}
public void setBounds(Rectangle r) {
AccessibleContext ac = getCurrentAccessibleContext();
if (ac instanceof AccessibleComponent) {
((AccessibleComponent) ac).setBounds(r);
} else {
Component c = getCurrentComponent();
if (c != null) {
c.setBounds(r);
}
}
}
public Dimension getSize() {
if (parent != null) {
Rectangle r = parent.getCellRect(row, column, false);
if (r != null) {
return r.getSize();
}
}
return null;
}
public void setSize (Dimension d) {
AccessibleContext ac = getCurrentAccessibleContext();
if (ac instanceof AccessibleComponent) {
((AccessibleComponent) ac).setSize(d);
} else {
Component c = getCurrentComponent();
if (c != null) {
c.setSize(d);
}
}
}
public Accessible getAccessibleAt(Point p) {
AccessibleContext ac = getCurrentAccessibleContext();
if (ac instanceof AccessibleComponent) {
return ((AccessibleComponent) ac).getAccessibleAt(p);
} else {
return null;
}
}
public boolean isFocusTraversable() {
AccessibleContext ac = getCurrentAccessibleContext();
if (ac instanceof AccessibleComponent) {
return ((AccessibleComponent) ac).isFocusTraversable();
} else {
Component c = getCurrentComponent();
if (c != null) {
return c.isFocusTraversable();
} else {
return false;
}
}
}
public void requestFocus() {
AccessibleContext ac = getCurrentAccessibleContext();
if (ac instanceof AccessibleComponent) {
((AccessibleComponent) ac).requestFocus();
} else {
Component c = getCurrentComponent();
if (c != null) {
c.requestFocus();
}
}
}
public void addFocusListener(FocusListener l) {
AccessibleContext ac = getCurrentAccessibleContext();
if (ac instanceof AccessibleComponent) {
((AccessibleComponent) ac).addFocusListener(l);
} else {
Component c = getCurrentComponent();
if (c != null) {
c.addFocusListener(l);
}
}
}
public void removeFocusListener(FocusListener l) {
AccessibleContext ac = getCurrentAccessibleContext();
if (ac instanceof AccessibleComponent) {
((AccessibleComponent) ac).removeFocusListener(l);
} else {
Component c = getCurrentComponent();
if (c != null) {
c.removeFocusListener(l);
}
}
}
} // inner class AccessibleJTableCell
// Begin AccessibleJTableHeader ========== // TIGER - 4715503
/**
* This class implements accessibility for JTable header cells.
*/
private class AccessibleJTableHeaderCell extends AccessibleContext
implements Accessible, AccessibleComponent {
private int row;
private int column;
private JTableHeader parent;
private Component rendererComponent;
/**
* Constructs an <code>AccessibleJTableHeaderEntry instance.
*
* @param row header cell row index
* @param column header cell column index
* @param parent header cell parent
* @param rendererComponent component that renders the header cell
*/
public AccessibleJTableHeaderCell(int row, int column,
JTableHeader parent,
Component rendererComponent) {
this.row = row;
this.column = column;
this.parent = parent;
this.rendererComponent = rendererComponent;
this.setAccessibleParent(parent);
}
/**
* Gets the <code>AccessibleContext associated with this
* component. In the implementation of the Java Accessibility
* API for this class, return this object, which is its own
* <code>AccessibleContext.
*
* @return this object
*/
public AccessibleContext getAccessibleContext() {
return this;
}
/*
* Returns the AccessibleContext for the header cell
* renderer.
*/
private AccessibleContext getCurrentAccessibleContext() {
return rendererComponent.getAccessibleContext();
}
/*
* Returns the component that renders the header cell.
*/
private Component getCurrentComponent() {
return rendererComponent;
}
// AccessibleContext methods ==========
/**
* Gets the accessible name of this object.
*
* @return the localized name of the object; <code>null
* if this object does not have a name
*/
public String getAccessibleName() {
AccessibleContext ac = getCurrentAccessibleContext();
if (ac != null) {
String name = ac.getAccessibleName();
if ((name != null) && (name != "")) {
return ac.getAccessibleName();
}
}
if ((accessibleName != null) && (accessibleName != "")) {
return accessibleName;
} else {
return null;
}
}
/**
* Sets the localized accessible name of this object.
*
* @param s the new localized name of the object
*/
public void setAccessibleName(String s) {
AccessibleContext ac = getCurrentAccessibleContext();
if (ac != null) {
ac.setAccessibleName(s);
} else {
super.setAccessibleName(s);
}
}
/**
* Gets the accessible description of this object.
*
* @return the localized description of the object;
* <code>null if this object does not have
* a description
*/
public String getAccessibleDescription() {
AccessibleContext ac = getCurrentAccessibleContext();
if (ac != null) {
return ac.getAccessibleDescription();
} else {
return super.getAccessibleDescription();
}
}
/**
* Sets the accessible description of this object.
*
* @param s the new localized description of the object
*/
public void setAccessibleDescription(String s) {
AccessibleContext ac = getCurrentAccessibleContext();
if (ac != null) {
ac.setAccessibleDescription(s);
} else {
super.setAccessibleDescription(s);
}
}
/**
* Gets the role of this object.
*
* @return an instance of <code>AccessibleRole
* describing the role of the object
* @see AccessibleRole
*/
public AccessibleRole getAccessibleRole() {
AccessibleContext ac = getCurrentAccessibleContext();
if (ac != null) {
return ac.getAccessibleRole();
} else {
return AccessibleRole.UNKNOWN;
}
}
/**
* Gets the state set of this object.
*
* @return an instance of <code>AccessibleStateSet
* containing the current state set of the object
* @see AccessibleState
*/
public AccessibleStateSet getAccessibleStateSet() {
AccessibleContext ac = getCurrentAccessibleContext();
AccessibleStateSet as = null;
if (ac != null) {
as = ac.getAccessibleStateSet();
}
if (as == null) {
as = new AccessibleStateSet();
}
Rectangle rjt = JTable.this.getVisibleRect();
Rectangle rcell = JTable.this.getCellRect(row, column, false);
if (rjt.intersects(rcell)) {
as.add(AccessibleState.SHOWING);
} else {
if (as.contains(AccessibleState.SHOWING)) {
as.remove(AccessibleState.SHOWING);
}
}
if (JTable.this.isCellSelected(row, column)) {
as.add(AccessibleState.SELECTED);
} else if (as.contains(AccessibleState.SELECTED)) {
as.remove(AccessibleState.SELECTED);
}
if ((row == getSelectedRow()) && (column == getSelectedColumn())) {
as.add(AccessibleState.ACTIVE);
}
as.add(AccessibleState.TRANSIENT);
return as;
}
/**
* Gets the <code>Accessible parent of this object.
*
* @return the Accessible parent of this object;
* <code>null if this object does not
* have an <code>Accessible parent
*/
public Accessible getAccessibleParent() {
return parent;
}
/**
* Gets the index of this object in its accessible parent.
*
* @return the index of this object in its parent; -1 if this
* object does not have an accessible parent
* @see #getAccessibleParent
*/
public int getAccessibleIndexInParent() {
return column;
}
/**
* Returns the number of accessible children in the object.
*
* @return the number of accessible children in the object
*/
public int getAccessibleChildrenCount() {
AccessibleContext ac = getCurrentAccessibleContext();
if (ac != null) {
return ac.getAccessibleChildrenCount();
} else {
return 0;
}
}
/**
* Returns the specified <code>Accessible child of the
* object.
*
* @param i zero-based index of child
* @return the <code>Accessible child of the object
*/
public Accessible getAccessibleChild(int i) {
AccessibleContext ac = getCurrentAccessibleContext();
if (ac != null) {
Accessible accessibleChild = ac.getAccessibleChild(i);
ac.setAccessibleParent(this);
return accessibleChild;
} else {
return null;
}
}
/**
* Gets the locale of the component. If the component
* does not have a locale, then the locale of its parent
* is returned.
*
* @return this component's locale; if this component does
* not have a locale, the locale of its parent is returned
* @exception IllegalComponentStateException if the
* <code>Component does not have its own locale
* and has not yet been added to a containment hierarchy
* such that the locale can be determined from the
* containing parent
* @see #setLocale
*/
public Locale getLocale() {
AccessibleContext ac = getCurrentAccessibleContext();
if (ac != null) {
return ac.getLocale();
} else {
return null;
}
}
/**
* Adds a <code>PropertyChangeListener to the listener list.
* The listener is registered for all properties.
*
* @param l the <code>PropertyChangeListener
* to be added
*/
public void addPropertyChangeListener(PropertyChangeListener l) {
AccessibleContext ac = getCurrentAccessibleContext();
if (ac != null) {
ac.addPropertyChangeListener(l);
} else {
super.addPropertyChangeListener(l);
}
}
/**
* Removes a <code>PropertyChangeListener from the
* listener list. This removes a <code>PropertyChangeListener
* that was registered for all properties.
*
* @param l the <code>PropertyChangeListener
* to be removed
*/
public void removePropertyChangeListener(PropertyChangeListener l) {
AccessibleContext ac = getCurrentAccessibleContext();
if (ac != null) {
ac.removePropertyChangeListener(l);
} else {
super.removePropertyChangeListener(l);
}
}
/**
* Gets the <code>AccessibleAction associated with this
* object if one exists. Otherwise returns <code>null.
*
* @return the <code>AccessibleAction, or null
*/
public AccessibleAction getAccessibleAction() {
return getCurrentAccessibleContext().getAccessibleAction();
}
/**
* Gets the <code>AccessibleComponent associated with
* this object if one exists. Otherwise returns <code>null.
*
* @return the <code>AccessibleComponent, or
* <code>null
*/
public AccessibleComponent getAccessibleComponent() {
return this; // to override getBounds()
}
/**
* Gets the <code>AccessibleSelection associated with
* this object if one exists. Otherwise returns <code>null.
*
* @return the <code>AccessibleSelection, or
* <code>null
*/
public AccessibleSelection getAccessibleSelection() {
return getCurrentAccessibleContext().getAccessibleSelection();
}
/**
* Gets the <code>AccessibleText associated with this
* object if one exists. Otherwise returns <code>null.
*
* @return the <code>AccessibleText, or null
*/
public AccessibleText getAccessibleText() {
return getCurrentAccessibleContext().getAccessibleText();
}
/**
* Gets the <code>AccessibleValue associated with
* this object if one exists. Otherwise returns <code>null.
*
* @return the <code>AccessibleValue, or null
*/
public AccessibleValue getAccessibleValue() {
return getCurrentAccessibleContext().getAccessibleValue();
}
// AccessibleComponent methods ==========
/**
* Gets the background color of this object.
*
* @return the background color, if supported, of the object;
* otherwise, <code>null
*/
public Color getBackground() {
AccessibleContext ac = getCurrentAccessibleContext();
if (ac instanceof AccessibleComponent) {
return ((AccessibleComponent) ac).getBackground();
} else {
Component c = getCurrentComponent();
if (c != null) {
return c.getBackground();
} else {
return null;
}
}
}
/**
* Sets the background color of this object.
*
* @param c the new <code>Color for the background
*/
public void setBackground(Color c) {
AccessibleContext ac = getCurrentAccessibleContext();
if (ac instanceof AccessibleComponent) {
((AccessibleComponent) ac).setBackground(c);
} else {
Component cp = getCurrentComponent();
if (cp != null) {
cp.setBackground(c);
}
}
}
/**
* Gets the foreground color of this object.
*
* @return the foreground color, if supported, of the object;
* otherwise, <code>null
*/
public Color getForeground() {
AccessibleContext ac = getCurrentAccessibleContext();
if (ac instanceof AccessibleComponent) {
return ((AccessibleComponent) ac).getForeground();
} else {
Component c = getCurrentComponent();
if (c != null) {
return c.getForeground();
} else {
return null;
}
}
}
/**
* Sets the foreground color of this object.
*
* @param c the new <code>Color for the foreground
*/
public void setForeground(Color c) {
AccessibleContext ac = getCurrentAccessibleContext();
if (ac instanceof AccessibleComponent) {
((AccessibleComponent) ac).setForeground(c);
} else {
Component cp = getCurrentComponent();
if (cp != null) {
cp.setForeground(c);
}
}
}
/**
* Gets the <code>Cursor of this object.
*
* @return the <code>Cursor, if supported,
* of the object; otherwise, <code>null
*/
public Cursor getCursor() {
AccessibleContext ac = getCurrentAccessibleContext();
if (ac instanceof AccessibleComponent) {
return ((AccessibleComponent) ac).getCursor();
} else {
Component c = getCurrentComponent();
if (c != null) {
return c.getCursor();
} else {
Accessible ap = getAccessibleParent();
if (ap instanceof AccessibleComponent) {
return ((AccessibleComponent) ap).getCursor();
} else {
return null;
}
}
}
}
/**
* Sets the <code>Cursor of this object.
*
* @param c the new <code>Cursor for the object
*/
public void setCursor(Cursor c) {
AccessibleContext ac = getCurrentAccessibleContext();
if (ac instanceof AccessibleComponent) {
((AccessibleComponent) ac).setCursor(c);
} else {
Component cp = getCurrentComponent();
if (cp != null) {
cp.setCursor(c);
}
}
}
/**
* Gets the <code>Font of this object.
*
* @return the <code>Font,if supported,
* for the object; otherwise, <code>null
*/
public Font getFont() {
AccessibleContext ac = getCurrentAccessibleContext();
if (ac instanceof AccessibleComponent) {
return ((AccessibleComponent) ac).getFont();
} else {
Component c = getCurrentComponent();
if (c != null) {
return c.getFont();
} else {
return null;
}
}
}
/**
* Sets the <code>Font of this object.
*
* @param f the new <code>Font for the object
*/
public void setFont(Font f) {
AccessibleContext ac = getCurrentAccessibleContext();
if (ac instanceof AccessibleComponent) {
((AccessibleComponent) ac).setFont(f);
} else {
Component c = getCurrentComponent();
if (c != null) {
c.setFont(f);
}
}
}
/**
* Gets the <code>FontMetrics of this object.
*
* @param f the <code>Font
* @return the <code>FontMetrics object, if supported;
* otherwise <code>null
* @see #getFont
*/
public FontMetrics getFontMetrics(Font f) {
AccessibleContext ac = getCurrentAccessibleContext();
if (ac instanceof AccessibleComponent) {
return ((AccessibleComponent) ac).getFontMetrics(f);
} else {
Component c = getCurrentComponent();
if (c != null) {
return c.getFontMetrics(f);
} else {
return null;
}
}
}
/**
* Determines if the object is enabled.
*
* @return true if object is enabled; otherwise, false
*/
public boolean isEnabled() {
AccessibleContext ac = getCurrentAccessibleContext();
if (ac instanceof AccessibleComponent) {
return ((AccessibleComponent) ac).isEnabled();
} else {
Component c = getCurrentComponent();
if (c != null) {
return c.isEnabled();
} else {
return false;
}
}
}
/**
* Sets the enabled state of the object.
*
* @param b if true, enables this object; otherwise, disables it
*/
public void setEnabled(boolean b) {
AccessibleContext ac = getCurrentAccessibleContext();
if (ac instanceof AccessibleComponent) {
((AccessibleComponent) ac).setEnabled(b);
} else {
Component c = getCurrentComponent();
if (c != null) {
c.setEnabled(b);
}
}
}
/**
* Determines if this object is visible. Note: this means that the
* object intends to be visible; however, it may not in fact be
* showing on the screen because one of the objects that this object
* is contained by is not visible. To determine if an object is
* showing on the screen, use <code>isShowing.
*
* @return true if object is visible; otherwise, false
*/
public boolean isVisible() {
AccessibleContext ac = getCurrentAccessibleContext();
if (ac instanceof AccessibleComponent) {
return ((AccessibleComponent) ac).isVisible();
} else {
Component c = getCurrentComponent();
if (c != null) {
return c.isVisible();
} else {
return false;
}
}
}
/**
* Sets the visible state of the object.
*
* @param b if true, shows this object; otherwise, hides it
*/
public void setVisible(boolean b) {
AccessibleContext ac = getCurrentAccessibleContext();
if (ac instanceof AccessibleComponent) {
((AccessibleComponent) ac).setVisible(b);
} else {
Component c = getCurrentComponent();
if (c != null) {
c.setVisible(b);
}
}
}
/**
* Determines if the object is showing. This is determined
* by checking the visibility of the object and ancestors
* of the object. Note: this will return true even if the
* object is obscured by another (for example,
* it happens to be underneath a menu that was pulled down).
*
* @return true if the object is showing; otherwise, false
*/
public boolean isShowing() {
AccessibleContext ac = getCurrentAccessibleContext();
if (ac instanceof AccessibleComponent) {
if (ac.getAccessibleParent() != null) {
return ((AccessibleComponent) ac).isShowing();
} else {
// Fixes 4529616 - AccessibleJTableCell.isShowing()
// returns false when the cell on the screen
// if no parent
return isVisible();
}
} else {
Component c = getCurrentComponent();
if (c != null) {
return c.isShowing();
} else {
return false;
}
}
}
/**
* Checks whether the specified point is within this
* object's bounds, where the point's x and y coordinates
* are defined to be relative to the coordinate system of
* the object.
*
* @param p the <code>Point relative to the
* coordinate system of the object
* @return true if object contains <code>Point;
* otherwise false
*/
public boolean contains(Point p) {
AccessibleContext ac = getCurrentAccessibleContext();
if (ac instanceof AccessibleComponent) {
Rectangle r = ((AccessibleComponent) ac).getBounds();
return r.contains(p);
} else {
Component c = getCurrentComponent();
if (c != null) {
Rectangle r = c.getBounds();
return r.contains(p);
} else {
return getBounds().contains(p);
}
}
}
/**
* Returns the location of the object on the screen.
*
* @return location of object on screen -- can be
* <code>null if this object is not on the screen
*/
public Point getLocationOnScreen() {
if (parent != null && parent.isShowing()) {
Point parentLocation = parent.getLocationOnScreen();
Point componentLocation = getLocation();
componentLocation.translate(parentLocation.x, parentLocation.y);
return componentLocation;
} else {
return null;
}
}
/**
* Gets the location of the object relative to the parent
* in the form of a point specifying the object's
* top-left corner in the screen's coordinate space.
*
* @return an instance of <code>Point representing
* the top-left corner of the object's bounds in the
* coordinate space of the screen; <code>null if
* this object or its parent are not on the screen
*/
public Point getLocation() {
if (parent != null) {
Rectangle r = parent.getHeaderRect(column);
if (r != null) {
return r.getLocation();
}
}
return null;
}
/**
* Sets the location of the object relative to the parent.
* @param p the new position for the top-left corner
* @see #getLocation
*/
public void setLocation(Point p) {
}
/**
* Gets the bounds of this object in the form of a Rectangle object.
* The bounds specify this object's width, height, and location
* relative to its parent.
*
* @return A rectangle indicating this component's bounds; null if
* this object is not on the screen.
* @see #contains
*/
public Rectangle getBounds() {
if (parent != null) {
return parent.getHeaderRect(column);
} else {
return null;
}
}
/**
* Sets the bounds of this object in the form of a Rectangle object.
* The bounds specify this object's width, height, and location
* relative to its parent.
*
* @param r rectangle indicating this component's bounds
* @see #getBounds
*/
public void setBounds(Rectangle r) {
AccessibleContext ac = getCurrentAccessibleContext();
if (ac instanceof AccessibleComponent) {
((AccessibleComponent) ac).setBounds(r);
} else {
Component c = getCurrentComponent();
if (c != null) {
c.setBounds(r);
}
}
}
/**
* Returns the size of this object in the form of a Dimension object.
* The height field of the Dimension object contains this object's
* height, and the width field of the Dimension object contains this
* object's width.
*
* @return A Dimension object that indicates the size of this component;
* null if this object is not on the screen
* @see #setSize
*/
public Dimension getSize() {
if (parent != null) {
Rectangle r = parent.getHeaderRect(column);
if (r != null) {
return r.getSize();
}
}
return null;
}
/**
* Resizes this object so that it has width and height.
*
* @param d The dimension specifying the new size of the object.
* @see #getSize
*/
public void setSize (Dimension d) {
AccessibleContext ac = getCurrentAccessibleContext();
if (ac instanceof AccessibleComponent) {
((AccessibleComponent) ac).setSize(d);
} else {
Component c = getCurrentComponent();
if (c != null) {
c.setSize(d);
}
}
}
/**
* Returns the Accessible child, if one exists, contained at the local
* coordinate Point.
*
* @param p The point relative to the coordinate system of this object.
* @return the Accessible, if it exists, at the specified location;
* otherwise null
*/
public Accessible getAccessibleAt(Point p) {
AccessibleContext ac = getCurrentAccessibleContext();
if (ac instanceof AccessibleComponent) {
return ((AccessibleComponent) ac).getAccessibleAt(p);
} else {
return null;
}
}
/**
* Returns whether this object can accept focus or not. Objects that
* can accept focus will also have the AccessibleState.FOCUSABLE state
* set in their AccessibleStateSets.
*
* @return true if object can accept focus; otherwise false
* @see AccessibleContext#getAccessibleStateSet
* @see AccessibleState#FOCUSABLE
* @see AccessibleState#FOCUSED
* @see AccessibleStateSet
*/
public boolean isFocusTraversable() {
AccessibleContext ac = getCurrentAccessibleContext();
if (ac instanceof AccessibleComponent) {
return ((AccessibleComponent) ac).isFocusTraversable();
} else {
Component c = getCurrentComponent();
if (c != null) {
return c.isFocusTraversable();
} else {
return false;
}
}
}
/**
* Requests focus for this object. If this object cannot accept focus,
* nothing will happen. Otherwise, the object will attempt to take
* focus.
* @see #isFocusTraversable
*/
public void requestFocus() {
AccessibleContext ac = getCurrentAccessibleContext();
if (ac instanceof AccessibleComponent) {
((AccessibleComponent) ac).requestFocus();
} else {
Component c = getCurrentComponent();
if (c != null) {
c.requestFocus();
}
}
}
/**
* Adds the specified focus listener to receive focus events from this
* component.
*
* @param l the focus listener
* @see #removeFocusListener
*/
public void addFocusListener(FocusListener l) {
AccessibleContext ac = getCurrentAccessibleContext();
if (ac instanceof AccessibleComponent) {
((AccessibleComponent) ac).addFocusListener(l);
} else {
Component c = getCurrentComponent();
if (c != null) {
c.addFocusListener(l);
}
}
}
/**
* Removes the specified focus listener so it no longer receives focus
* events from this component.
*
* @param l the focus listener
* @see #addFocusListener
*/
public void removeFocusListener(FocusListener l) {
AccessibleContext ac = getCurrentAccessibleContext();
if (ac instanceof AccessibleComponent) {
((AccessibleComponent) ac).removeFocusListener(l);
} else {
Component c = getCurrentComponent();
if (c != null) {
c.removeFocusListener(l);
}
}
}
} // inner class AccessibleJTableHeaderCell
} // inner class AccessibleJTable
} // End of Class JTable
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