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The source code/* * JEditTextArea.java - jEdit's text component * Copyright (C) 1999, 2000 Slava Pestov * Portion Copyrights (C) 2001-2003 Romain Guy * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License * as published by the Free Software Foundation; either version 2 * of the License, or any later version. * * This program 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 for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ package org.gjt.sp.jedit.textarea; import javax.swing.event.*; import javax.swing.text.*; import javax.swing.undo.*; import javax.swing.*; import java.awt.datatransfer.*; import java.awt.event.*; import java.awt.*; import java.awt.font.*; import java.util.Enumeration; import java.util.Vector; import org.gjt.sp.jedit.syntax.*; import org.gjt.sp.jedit.gui.KeyEventWorkaround; import org.jext.JextFrame; import org.jext.JextTextArea; /** * jEdit's text area component. It is more suited for editing program * source code than JEditorPane, because it drops the unnecessary features * (images, variable-width lines, and so on) and adds a whole bunch of * useful goodies such as: *
* * To use it in your app, treat it like any other component, for example: * JEditTextArea ta = new JEditTextArea();
* ta.setTokenMarker(new JavaTokenMarker());
* ta.setText("public class Test {\n"
* + " public static void main(String[] args) {\n"
* + " System.out.println(\"Hello World\");\n"
* + " }\n"
* + "}");
*
* @author Slava Pestov
* @version $Id: JEditTextArea.java,v 1.10 2003/06/30 17:31:08 blaisorblade Exp $
*/
public class JEditTextArea extends JComponent
{
private JextFrame view;
/**
* Adding components with this name to the text area will place
* them left of the horizontal scroll bar. In jEdit, the status
* bar is added this way.
*/
public static String LEFT_OF_SCROLLBAR = "los";
/**
* Creates a new JEditTextArea with the default settings.
*/
public JEditTextArea(JextFrame view)
{
this(view, TextAreaDefaults.getDefaults());
}
/**
* Creates a new JEditTextArea with the specified settings.
* @param defaults The default settings
*/
public JEditTextArea(JextFrame view, TextAreaDefaults defaults)
{
this.view = view;
// Enable the necessary events
enableEvents(AWTEvent.KEY_EVENT_MASK);
// Initialize some misc. stuff
painter = new TextAreaPainter(this, defaults);
gutter = new Gutter(this, defaults);
documentHandler = new DocumentHandler();
listenerList = new EventListenerList();
caretEvent = new MutableCaretEvent();
bracketLine = bracketPosition = -1;
blink = true;
lineSegment = new Segment();
// Initialize the GUI
setLayout(new ScrollLayout());
add(LEFT, gutter);
add(CENTER, painter);
add(RIGHT, vertical = new JScrollBar(JScrollBar.VERTICAL));
add(BOTTOM, horizontal = new JScrollBar(JScrollBar.HORIZONTAL));
// Add some event listeners
vertical.addAdjustmentListener(new AdjustHandler());
horizontal.addAdjustmentListener(new AdjustHandler());
painter.addComponentListener(new ComponentHandler());
painter.addMouseListener(new MouseHandler());
painter.addMouseMotionListener(new DragHandler());
addFocusListener(new FocusHandler());
// Load the defaults
editable = defaults.editable;
caretVisible = defaults.caretVisible;
caretBlinks = defaults.caretBlinks;
electricScroll = defaults.electricScroll;
popup = defaults.popup;
setDocument(new SyntaxDocument());
// We don't seem to get the initial focus event?
focusedComponent = this;
}
public boolean getFocusTraversalKeysEnabled()
{
return false;
}
public InputHandler getInputHandler()
{
return view.getInputHandler();
}
/**
* Returns if this component can be traversed by pressing
* the Tab key. This returns false.
*/
public final boolean isManagingFocus()
{
return true;
}
/**
* Returns 0,0 for split pane compatibility.
*/
public final Dimension getMinimumSize()
{
return new Dimension(0, 0);
}
/**
* Returns the object responsible for painting this text area.
*/
public final TextAreaPainter getPainter()
{
return painter;
}
/**
* Returns the gutter to the left of the text area or null if the gutter
* is disabled
*/
public final Gutter getGutter()
{
return gutter;
}
/**
* Returns true if the caret is blinking, false otherwise.
*/
public final boolean isCaretBlinkEnabled()
{
return caretBlinks;
}
/**
* Toggles caret blinking.
* @param caretBlinks True if the caret should blink, false otherwise
*/
public void setCaretBlinkEnabled(boolean caretBlinks)
{
this.caretBlinks = caretBlinks;
if (!caretBlinks)
blink = false;
painter.invalidateSelectedLines();
}
/**
* Returns true if the caret is visible, false otherwise.
*/
public final boolean isCaretVisible()
{
return (!caretBlinks || blink) && caretVisible;
}
/**
* Sets if the caret should be visible.
* @param caretVisible True if the caret should be visible, false
* otherwise
*/
public void setCaretVisible(boolean caretVisible)
{
this.caretVisible = caretVisible;
blink = true;
painter.invalidateSelectedLines();
}
/**
* Blinks the caret.
*/
public final void blinkCaret()
{
if (caretBlinks)
{
blink = !blink;
painter.invalidateSelectedLines();
} else
blink = true;
}
/**
* Returns the number of lines from the top and button of the
* text area that are always visible.
*/
public final int getElectricScroll()
{
return electricScroll;
}
/**
* Sets the number of lines from the top and bottom of the text
* area that are always visible
* @param electricScroll The number of lines always visible from
* the top or bottom
*/
public final void setElectricScroll(int electricScroll)
{
this.electricScroll = electricScroll;
}
/**
* Updates the state of the scroll bars. This should be called
* if the number of lines in the document changes, or when the
* size of the text are changes.
*/
public void updateScrollBars()
{
if (vertical != null && visibleLines != 0)
{
int lineCount = getLineCount();
if (firstLine < 0)
{
setFirstLine(0);
return;
} else if (lineCount < firstLine + visibleLines) {
int newFirstLine = Math.max(0, lineCount - visibleLines);
if (newFirstLine != firstLine)
{
setFirstLine(newFirstLine);
return;
}
}
vertical.setValues(firstLine, visibleLines, 0, getLineCount());
vertical.setUnitIncrement(2);
vertical.setBlockIncrement(visibleLines);
}
int width = painter.getWidth();
if (horizontal != null && width != 0)
{
maxHorizontalScrollWidth = 0;
painter.repaint();
horizontal.setUnitIncrement(painter.getFontMetrics().charWidth('w'));
horizontal.setBlockIncrement(width / 2);
}
}
/**
* Returns the line displayed at the text area's origin.
*/
public final int getFirstLine()
{
return firstLine;
}
/**
* Sets the line displayed at the text area's origin without
* updating the scroll bars.
*/
public void setFirstLine(int firstLine)
{
if (firstLine == this.firstLine)
return;
int oldFirstLine = this.firstLine;
this.firstLine = firstLine;
maxHorizontalScrollWidth = 0;
if (firstLine != vertical.getValue())
updateScrollBars();
painter.repaint();
gutter.repaint();
}
/**
* Returns the number of lines visible in this text area.
*/
public final int getVisibleLines()
{
return visibleLines;
}
/**
* Recalculates the number of visible lines. This should not
* be called directly.
*/
public final void recalculateVisibleLines()
{
if (painter == null)
return;
int height = painter.getHeight();
int lineHeight = painter.getFontMetrics().getHeight();
int oldVisibleLines = visibleLines;
visibleLines = height / lineHeight;
updateScrollBars();
}
void updateMaxHorizontalScrollWidth()
{
int _maxHorizontalScrollWidth = getTokenMarker().getMaxLineWidth(firstLine, visibleLines);
if (_maxHorizontalScrollWidth != maxHorizontalScrollWidth)
{
maxHorizontalScrollWidth = _maxHorizontalScrollWidth;
horizontal.setValues(-horizontalOffset, painter.getWidth(), 0,
maxHorizontalScrollWidth + painter.getFontMetrics().charWidth('w'));
}
}
/**
* Returns the horizontal offset of drawn lines.
*/
public final int getHorizontalOffset()
{
return horizontalOffset;
}
/**
* Sets the horizontal offset of drawn lines. This can be used to
* implement horizontal scrolling.
* @param horizontalOffset offset The new horizontal offset
*/
public void setHorizontalOffset(int horizontalOffset)
{
if (horizontalOffset == this.horizontalOffset)
return;
this.horizontalOffset = horizontalOffset;
if (horizontalOffset != horizontal.getValue())
updateScrollBars();
painter.repaint();
}
/**
* A fast way of changing both the first line and horizontal
* offset.
* @param firstLine The new first line
* @param horizontalOffset The new horizontal offset
* @return True if any of the values were changed, false otherwise
*/
public boolean setOrigin(int firstLine, int horizontalOffset)
{
boolean changed = false;
int oldFirstLine = this.firstLine;
if (horizontalOffset != this.horizontalOffset)
{
this.horizontalOffset = horizontalOffset;
changed = true;
}
if (firstLine != this.firstLine)
{
this.firstLine = firstLine;
changed = true;
}
if (changed)
{
updateScrollBars();
painter.repaint();
gutter.repaint();
}
return changed;
}
/**
* Ensures that the caret is visible by scrolling the text area if
* necessary.
* @return True if scrolling was actually performed, false if the
* caret was already visible
*/
public boolean scrollToCaret()
{
int line = getCaretLine();
int lineStart = getLineStartOffset(line);
int offset = Math.max(0, Math.min(getLineLength(line) - 1, getCaretPosition() - lineStart));
return scrollTo(line, offset);
}
/**
* Ensures that the specified line and offset is visible by scrolling
* the text area if necessary.
* @param line The line to scroll to
* @param offset The offset in the line to scroll to
* @return True if scrolling was actually performed, false if the
* line and offset was already visible
*/
public boolean scrollTo(int line, int offset)
{
// visibleLines == 0 before the component is realized
// we can't do any proper scrolling then, so we have
// this hack...
if (visibleLines == 0)
{
setFirstLine(Math.max(0, line - electricScroll));
return true;
}
int newFirstLine = firstLine;
int newHorizontalOffset = horizontalOffset;
if (line < firstLine + electricScroll)
{
newFirstLine = Math.max(0, line - electricScroll);
} else if (line + electricScroll >= firstLine + visibleLines) {
newFirstLine = (line - visibleLines) + electricScroll + 1;
if (newFirstLine + visibleLines >= getLineCount())
newFirstLine = getLineCount() - visibleLines;
if (newFirstLine < 0)
newFirstLine = 0;
}
int x = offsetToX(line, offset);
int width = painter.getFontMetrics().charWidth('w');
if (x < 0)
{
newHorizontalOffset = Math.min(0, horizontalOffset - x + width + 5);
} else if (x + width >= painter.getWidth()) {
newHorizontalOffset = horizontalOffset + (painter.getWidth() - x) - width - 5;
}
return setOrigin(newFirstLine, newHorizontalOffset);
}
/**
* Converts a line index to a y co-ordinate.
* @param line The line
*/
public int lineToY(int line)
{
FontMetrics fm = painter.getFontMetrics();
return (line - firstLine) * fm.getHeight() - (fm.getLeading() + fm.getMaxDescent());
}
/**
* Converts a y co-ordinate to a line index.
* @param y The y co-ordinate
*/
public int yToLine(int y)
{
FontMetrics fm = painter.getFontMetrics();
int height = fm.getHeight();
return Math.max(0, Math.min(getLineCount() - 1, y / height + firstLine));
}
/**
* Converts an offset in a line into an x co-ordinate.
* @param line The line
* @param offset The offset, from the start of the line
*/
public int offsetToX(int line, int offset)
{
TokenMarker tokenMarker = getTokenMarker();
/* Use painter's cached info for speed */
FontMetrics fm = painter.getFontMetrics();
getLineText(line, lineSegment);
int segmentOffset = lineSegment.offset;
int x = horizontalOffset;
/* If syntax coloring is disabled, do simple translation */
if (tokenMarker == null)
{
lineSegment.count = offset;
return x + Utilities.getTabbedTextWidth(lineSegment, fm, x, painter, 0);
}
/* If syntax coloring is enabled, we have to do this because
* tokens can vary in width */
else
{
Token tokens = tokenMarker.markTokens(lineSegment, line);
Toolkit toolkit = painter.getToolkit();
Font defaultFont = painter.getFont();
SyntaxStyle[] styles = painter.getStyles();
for (;;)
{
byte id = tokens.id;
if (id == Token.END)
{
return x;
}
if (id == Token.NULL)
fm = painter.getFontMetrics();
else
fm = styles[id].getFontMetrics(defaultFont);
int length = tokens.length;
if (offset + segmentOffset < lineSegment.offset + length)
{
lineSegment.count = offset - (lineSegment.offset - segmentOffset);
return x + Utilities.getTabbedTextWidth(lineSegment, fm, x, painter, 0);
} else {
lineSegment.count = length;
x += Utilities.getTabbedTextWidth(lineSegment, fm, x, painter, 0);
lineSegment.offset += length;
}
tokens = tokens.next;
}
}
}
/**
* Converts an x co-ordinate to an offset within a line.
* @param line The line
* @param x The x co-ordinate
*/
public int xToOffset(int line, int x)
{
TokenMarker tokenMarker = getTokenMarker();
/* Use painter's cached info for speed */
FontMetrics fm = painter.getFontMetrics();
getLineText(line, lineSegment);
char[] segmentArray = lineSegment.array;
int segmentOffset = lineSegment.offset;
int segmentCount = lineSegment.count;
int width = horizontalOffset;
if (tokenMarker == null)
{
for (int i = 0; i < segmentCount; i++)
{
char c = segmentArray[i + segmentOffset];
int charWidth;
if (c == '\t')
charWidth = (int) painter.nextTabStop(width, i) - width;
else
charWidth = fm.charWidth(c);
if (painter.isBlockCaretEnabled())
{
if (x - charWidth <= width)
return i;
} else {
if (x - charWidth / 2 <= width)
return i;
}
width += charWidth;
}
return segmentCount;
} else {
Token tokens = tokenMarker.markTokens(lineSegment, line);
int offset = 0;
Toolkit toolkit = painter.getToolkit();
Font defaultFont = painter.getFont();
SyntaxStyle[] styles = painter.getStyles();
for (;;)
{
byte id = tokens.id;
if (id == Token.END)
return offset;
if (id == Token.NULL)
fm = painter.getFontMetrics();
else
fm = styles[id].getFontMetrics(defaultFont);
int length = tokens.length;
for (int i = 0; i < length; i++)
{
char c = segmentArray[segmentOffset + offset + i];
int charWidth;
if (c == '\t')
charWidth = (int) painter.nextTabStop(width, offset + i) - width;
else
charWidth = fm.charWidth(c);
if (painter.isBlockCaretEnabled())
{
if (x - charWidth <= width)
return offset + i;
} else {
if (x - charWidth / 2 <= width)
return offset + i;
}
width += charWidth;
}
offset += length;
tokens = tokens.next;
}
}
}
/**
* Converts a point to an offset, from the start of the text.
* @param x The x co-ordinate of the point
* @param y The y co-ordinate of the point
*/
public int xyToOffset(int x, int y)
{
int line = yToLine(y);
int start = getLineStartOffset(line);
return start + xToOffset(line, x);
}
/**
* Returns the document this text area is editing.
*/
public final SyntaxDocument getDocument()
{
return document;
}
/**
* Sets the document this text area is editing.
* @param document The document
*/
public void setDocument(SyntaxDocument document)
{
if (this.document == document)
return;
if (this.document != null)
this.document.removeDocumentListener(documentHandler);
this.document = document;
document.addDocumentListener(documentHandler);
documentHandlerInstalled = true;
maxHorizontalScrollWidth = 0;
select(0, 0);
updateScrollBars();
painter.repaint();
gutter.repaint();
}
/**
* Returns the document's token marker. Equivalent to calling
* getDocument().getTokenMarker().
*/
public final TokenMarker getTokenMarker()
{
return document.getTokenMarker();
}
/**
* Sets the document's token marker. Equivalent to caling
* getDocument().setTokenMarker().
* @param tokenMarker The token marker
*/
public final void setTokenMarker(TokenMarker tokenMarker)
{
document.setTokenMarker(tokenMarker);
}
/**
* Returns the length of the document. Equivalent to calling
* getDocument().getLength().
*/
public final int getDocumentLength()
{
return document.getLength();
}
/**
* Returns the number of lines in the document.
*/
public final int getLineCount()
{
return document.getDefaultRootElement().getElementCount();
}
/**
* Returns the line containing the specified offset.
* @param offset The offset
*/
public final int getLineOfOffset(int offset)
{
return document.getDefaultRootElement().getElementIndex(offset);
}
/**
* Returns the start offset of the specified line.
* @param line The line
* @return The start offset of the specified line, or -1 if the line is
* invalid
*/
public int getLineStartOffset(int line)
{
Element lineElement = document.getDefaultRootElement().getElement(line);
if (lineElement == null)
return -1;
else
return lineElement.getStartOffset();
}
/**
* Returns the end offset of the specified line.
* @param line The line
* @return The end offset of the specified line, or -1 if the line is
* invalid.
*/
public int getLineEndOffset(int line)
{
Element lineElement = document.getDefaultRootElement().getElement(line);
if (lineElement == null)
return -1;
else
return lineElement.getEndOffset();
}
/**
* Returns the length of the specified line.
* @param line The line
*/
public int getLineLength(int line)
{
Element lineElement = document.getDefaultRootElement().getElement(line);
if (lineElement == null)
return -1;
else
return lineElement.getEndOffset() - lineElement.getStartOffset() - 1;
}
/**
* Returns the entire text of this text area.
*/
public String getText()
{
try
{
return document.getText(0, document.getLength());
} catch (BadLocationException bl) {
bl.printStackTrace();
return null;
}
}
/**
* Sets the entire text of this text area.
*/
public void setText(String text)
{
try
{
document.beginCompoundEdit();
document.remove(0, document.getLength());
document.insertString(0, text, null);
} catch (BadLocationException bl) {
bl.printStackTrace();
} finally {
document.endCompoundEdit();
}
}
/**
* Returns the specified substring of the document.
* @param start The start offset
* @param len The length of the substring
* @return The substring, or null if the offsets are invalid
*/
public final String getText(int start, int len)
{
try
{
return document.getText(start, len);
} catch (BadLocationException bl) {
bl.printStackTrace();
return null;
}
}
/**
* Copies the specified substring of the document into a segment.
* If the offsets are invalid, the segment will contain a null string.
* @param start The start offset
* @param len The length of the substring
* @param segment The segment
*/
public final void getText(int start, int len, Segment segment)
{
try
{
document.getText(start, len, segment);
} catch (BadLocationException bl) {
bl.printStackTrace();
segment.offset = segment.count = 0;
}
}
/**
* Returns the text on the specified line.
* @param lineIndex The line
* @return The text, or null if the line is invalid
*/
public final String getLineText(int lineIndex)
{
int start = getLineStartOffset(lineIndex);
return getText(start, getLineEndOffset(lineIndex) - start - 1);
}
/**
* Copies the text on the specified line into a segment. If the line
* is invalid, the segment will contain a null string.
* @param lineIndex The line
*/
public final void getLineText(int lineIndex, Segment segment)
{
int start = getLineStartOffset(lineIndex);
getText(start, getLineEndOffset(lineIndex) - start - 1, segment);
}
/**
* Returns the selection start offset.
*/
public final int getSelectionStart()
{
return selectionStart;
}
/**
* Returns the offset where the selection starts on the specified
* line.
*/
public int getSelectionStart(int line)
{
if (line == selectionStartLine)
return selectionStart;
else if (rectSelect)
{
Element map = document.getDefaultRootElement();
int start = selectionStart - map.getElement(selectionStartLine).getStartOffset();
Element lineElement = map.getElement(line);
int lineStart = lineElement.getStartOffset();
int lineEnd = lineElement.getEndOffset() - 1;
return Math.min(lineEnd, lineStart + start);
} else
return getLineStartOffset(line);
}
/**
* Returns the selection start line.
*/
public final int getSelectionStartLine()
{
return selectionStartLine;
}
/**
* Sets the selection start. The new selection will be the new
* selection start and the old selection end.
* @param selectionStart The selection start
* @see #select(int,int)
*/
public final void setSelectionStart(int selectionStart)
{
select(selectionStart, selectionEnd);
}
/**
* Returns the selection end offset.
*/
public final int getSelectionEnd()
{
return selectionEnd;
}
/**
* Returns the offset where the selection ends on the specified
* line.
*/
public int getSelectionEnd(int line)
{
if (line == selectionEndLine)
return selectionEnd;
else if (rectSelect)
{
Element map = document.getDefaultRootElement();
int end = selectionEnd - map.getElement(selectionEndLine).getStartOffset();
Element lineElement = map.getElement(line);
int lineStart = lineElement.getStartOffset();
int lineEnd = lineElement.getEndOffset() - 1;
return Math.min(lineEnd, lineStart + end);
} else
return getLineEndOffset(line) - 1;
}
/**
* Returns the selection end line.
*/
public final int getSelectionEndLine()
{
return selectionEndLine;
}
/**
* Sets the selection end. The new selection will be the old
* selection start and the bew selection end.
* @param selectionEnd The selection end
* @see #select(int,int)
*/
public final void setSelectionEnd(int selectionEnd)
{
select(selectionStart, selectionEnd);
}
/**
* Returns the caret position. This will either be the selection
* start or the selection end, depending on which direction the
* selection was made in.
*/
public final int getCaretPosition()
{
return (biasLeft ? selectionStart : selectionEnd);
}
/**
* Returns the caret line.
*/
public final int getCaretLine()
{
return (biasLeft ? selectionStartLine : selectionEndLine);
}
/**
* Returns the mark position. This will be the opposite selection
* bound to the caret position.
* @see #getCaretPosition()
*/
public final int getMarkPosition()
{
return (biasLeft ? selectionEnd : selectionStart);
}
/**
* Returns the mark line.
*/
public final int getMarkLine()
{
return (biasLeft ? selectionEndLine : selectionStartLine);
}
/**
* Sets the caret position. The new selection will consist of the
* caret position only (hence no text will be selected)
* @param caret The caret position
* @see #select(int,int)
*/
public final void setCaretPosition(int caret)
{
select(caret, caret);
}
/**
* Selects all text in the document.
*/
public final void selectAll()
{
select(0, getDocumentLength());
}
/**
* Moves the mark to the caret position.
*/
public final void selectNone()
{
select(getCaretPosition(), getCaretPosition());
}
/**
* Selects from the start offset to the end offset. This is the
* general selection method used by all other selecting methods.
* The caret position will be start if start < end, and end
* if end > start.
* @param start The start offset
* @param end The end offset
*/
public void select(int start, int end)
{
int newStart, newEnd;
boolean newBias;
if (start <= end)
{
newStart = start;
newEnd = end;
newBias = false;
} else {
newStart = end;
newEnd = start;
newBias = true;
}
if (newStart < 0 || newEnd > getDocumentLength())
{
throw new IllegalArgumentException("Bounds out of" + " range: " + newStart + "," + newEnd);
}
// If the new position is the same as the old, we don't
// do all this crap, however we still do the stuff at
// the end (clearing magic position, scrolling)
if (newStart != selectionStart || newEnd != selectionEnd || newBias != biasLeft)
{
updateBracketHighlight(end);
int newStartLine = getLineOfOffset(newStart);
int newEndLine = getLineOfOffset(newEnd);
painter.invalidateLineRange(selectionStartLine, selectionEndLine);
painter.invalidateLineRange(newStartLine, newEndLine);
document.addUndoableEdit(new CaretUndo(selectionStart, selectionEnd, newStart, newEnd));
selectionStart = newStart;
selectionEnd = newEnd;
selectionStartLine = newStartLine;
selectionEndLine = newEndLine;
biasLeft = newBias;
gutter.repaint();
fireCaretEvent();
}
// When the user is typing, etc, we don't want the caret
// to blink
blink = true;
caretTimer.restart();
// Disable rectangle select if selection start = selection end
if (selectionStart == selectionEnd)
rectSelect = false;
// Clear the `magic' caret position used by up/down
magicCaret = -1;
scrollToCaret();
}
/**
* Returns the selected text, or null if no selection is active.
*/
public final String getSelectedText()
{
if (selectionStart == selectionEnd)
return null;
if (rectSelect)
{
// Return each row of the selection on a new line
Element map = document.getDefaultRootElement();
int start = selectionStart - map.getElement(selectionStartLine).getStartOffset();
int end = selectionEnd - map.getElement(selectionEndLine).getStartOffset();
// Certain rectangles satisfy this condition...
if (end < start)
{
int tmp = end;
end = start;
start = tmp;
}
StringBuffer buf = new StringBuffer();
Segment seg = new Segment();
for (int i = selectionStartLine; i <= selectionEndLine; i++)
{
Element lineElement = map.getElement(i);
int lineStart = lineElement.getStartOffset();
int lineEnd = lineElement.getEndOffset() - 1;
int lineLen = lineEnd - lineStart;
lineStart = Math.min(lineStart + start, lineEnd);
lineLen = Math.min(end - start, lineEnd - lineStart);
getText(lineStart, lineLen, seg);
buf.append(seg.array, seg.offset, seg.count);
if (i != selectionEndLine)
buf.append('\n');
}
return buf.toString();
} else {
return getText(selectionStart, selectionEnd - selectionStart);
}
}
/**
* Replaces the selection with the specified text.
* @param selectedText The replacement text for the selection
*/
public void setSelectedText(String selectedText)
{
if (!editable)
{
throw new InternalError("Text component" + " read only");
}
document.beginCompoundEdit();
try
{
if (rectSelect)
{
Element map = document.getDefaultRootElement();
int start = selectionStart - map.getElement(selectionStartLine).getStartOffset();
int end = selectionEnd - map.getElement(selectionEndLine).getStartOffset();
// Certain rectangles satisfy this condition...
if (end < start)
{
int tmp = end;
end = start;
start = tmp;
}
int lastNewline = 0;
int currNewline = 0;
for (int i = selectionStartLine; i <= selectionEndLine; i++)
{
Element lineElement = map.getElement(i);
int lineStart = lineElement.getStartOffset();
int lineEnd = lineElement.getEndOffset() - 1;
int rectStart = Math.min(lineEnd, lineStart + start);
document.remove(rectStart, Math.min(lineEnd - rectStart, end - start));
if (selectedText == null)
continue;
currNewline = selectedText.indexOf('\n',lastNewline);
if (currNewline == -1)
currNewline = selectedText.length();
document.insertString(rectStart, selectedText .substring(lastNewline, currNewline), null);
lastNewline = Math.min(selectedText.length(), currNewline + 1);
}
if (selectedText != null && currNewline != selectedText.length())
{
int offset = map.getElement(selectionEndLine).getEndOffset() - 1;
document.insertString(offset, "\n",null);
document.insertString(offset + 1, selectedText .substring(currNewline + 1), null);
}
} else {
document.remove(selectionStart, selectionEnd - selectionStart);
if (selectedText != null)
{
document.insertString(selectionStart, selectedText, null);
}
}
} catch (BadLocationException bl) {
bl.printStackTrace();
throw new InternalError("Cannot replace" + " selection");
} finally {
document.endCompoundEdit();
}
setCaretPosition(selectionEnd);
}
/**
* Returns true if this text area is editable, false otherwise.
*/
public final boolean isEditable()
{
return editable;
}
/**
* Sets if this component is editable.
* @param editable True if this text area should be editable,
* false otherwise
*/
public final void setEditable(boolean editable)
{
this.editable = editable;
}
/**
* Returns the right click popup menu.
*/
public final JPopupMenu getRightClickPopup()
{
return popup;
}
/**
* Sets the right click popup menu.
* @param popup The popup
*/
public final void setRightClickPopup(JPopupMenu popup)
{
this.popup = popup;
}
/**
* Returns the `magic' caret position. This can be used to preserve
* the column position when moving up and down lines.
*/
public final int getMagicCaretPosition()
{
return magicCaret;
}
/**
* Sets the `magic' caret position. This can be used to preserve
* the column position when moving up and down lines.
* @param magicCaret The magic caret position
*/
public final void setMagicCaretPosition(int magicCaret)
{
this.magicCaret = magicCaret;
}
/**
* Similar to setSelectedText(), but overstrikes the
* appropriate number of characters if overwrite mode is enabled.
* @param str The string
* @see #setSelectedText(String)
* @see #isOverwriteEnabled()
*/
public void overwriteSetSelectedText(String str)
{
// Don't overstrike if there is a selection
if (!overwrite || selectionStart != selectionEnd)
{
setSelectedText(str);
return;
}
// Don't overstrike if we're on the end of
// the line
int caret = getCaretPosition();
int caretLineEnd = getLineEndOffset(getCaretLine());
if (caretLineEnd - caret <= str.length())
{
setSelectedText(str);
return;
}
document.beginCompoundEdit();
try
{
document.remove(caret, str.length());
document.insertString(caret, str, null);
} catch (BadLocationException bl) {
bl.printStackTrace();
} finally {
document.endCompoundEdit();
}
}
/**
* Returns true if overwrite mode is enabled, false otherwise.
*/
public final boolean isOverwriteEnabled()
{
return overwrite;
}
/**
* Sets if overwrite mode should be enabled.
* @param overwrite True if overwrite mode should be enabled,
* false otherwise.
*/
public final void setOverwriteEnabled(boolean overwrite)
{
this.overwrite = overwrite;
painter.invalidateSelectedLines();
}
/**
* Returns true if the selection is rectangular, false otherwise.
*/
public final boolean isSelectionRectangular()
{
return rectSelect;
}
/**
* Sets if the selection should be rectangular.
* @param overwrite True if the selection should be rectangular,
* false otherwise.
*/
public final void setSelectionRectangular(boolean rectSelect)
{
this.rectSelect = rectSelect;
painter.invalidateSelectedLines();
}
/**
* Returns the position of the highlighted bracket (the bracket
* matching the one before the caret)
*/
public final int getBracketPosition()
{
return bracketPosition;
}
/**
* Returns the line of the highlighted bracket (the bracket
* matching the one before the caret)
*/
public final int getBracketLine()
{
return bracketLine;
}
/**
* Adds a caret change listener to this text area.
* @param listener The listener
*/
public final void addCaretListener(CaretListener listener)
{
listenerList.add(CaretListener.class, listener);
}
/**
* Removes a caret change listener from this text area.
* @param listener The listener
*/
public final void removeCaretListener(CaretListener listener)
{
listenerList.remove(CaretListener.class, listener);
}
public void appendCut()
{
if (editable)
{
appendCopy();
if (selectionStart == selectionEnd)
{
int line = getCaretLine();
int start = getLineStartOffset(line);
int end = getLineEndOffset(line);
if (end == document.getLength() + 1)
end--;
try
{
document.remove(start, end - start);
} catch (BadLocationException ble) { }
} else
setSelectedText("");
}
}
/**
* Deletes the selected text from the text area and places it
* into the clipboard.
*/
public void cut()
{
if (editable)
{
copy();
if (selectionStart == selectionEnd)
{
int line = getCaretLine();
int start = getLineStartOffset(line);
int end = getLineEndOffset(line);
if (end == document.getLength() + 1)
end--;
try
{
document.remove(start, end - start);
} catch (BadLocationException ble) { }
} else
setSelectedText("");
}
}
public void appendCopy()
{
String selection;
if (selectionStart == selectionEnd)
{
int line = getCaretLine();
int start = getLineStartOffset(line);
int end = getLineEndOffset(line);
selection = getText(start, end - start);
setSelectionStart(start);
setSelectionEnd(start);
} else
selection = getSelectedText();
Clipboard clipboard = getToolkit().getSystemClipboard();
try
{
String clipped = ((String) clipboard.getContents(this).getTransferData(DataFlavor.stringFlavor)).replace('\r','\n');
clipboard.setContents(new StringSelection(clipped + selection), null);
} catch (Exception e) {
clipboard.setContents(new StringSelection(selection), null);
}
}
/**
* Places the selected text into the clipboard.
*/
public void copy()
{
String selection;
if (selectionStart == selectionEnd)
{
int line = getCaretLine();
int start = getLineStartOffset(line);
int end = getLineEndOffset(line);
selection = getText(start, end - start);
setSelectionStart(start);
setSelectionEnd(start);
} else
selection = getSelectedText();
Clipboard clipboard = getToolkit().getSystemClipboard();
clipboard.setContents(new StringSelection(selection), null);
}
/**
* Inserts the clipboard contents into the text.
*/
public void paste()
{
if (editable)
{
Clipboard clipboard = getToolkit().getSystemClipboard();
try
{
// The MacOS MRJ doesn't convert \r to \n,
// so do it here
String selection =
((String) clipboard.getContents(this).getTransferData(DataFlavor.stringFlavor)).replace('\r','\n');
setSelectedText(selection);
} catch (Exception e) {
getToolkit().beep();
}
}
}
/**
* Returns the status bar component (which was added with a name
* of LEFT_OF_SCROLLBAR).
*/
public Component getStatus()
{
return ((ScrollLayout) getLayout()).leftOfScrollBar;
}
/**
* Called by the AWT when this component is added to a parent.
* Adds document listener.
*/
public void addNotify()
{
super.addNotify();
if (!documentHandlerInstalled)
{
documentHandlerInstalled = true;
document.addDocumentListener(documentHandler);
}
}
/**
* Called by the AWT when this component is removed from it's parent.
* This clears the pointer to the currently focused component.
* Also removes document listener.
*/
public void removeNotify()
{
super.removeNotify();
if (focusedComponent == this)
focusedComponent = null;
if (documentHandlerInstalled)
{
document.removeDocumentListener(documentHandler);
documentHandlerInstalled = false;
}
}
protected void processKeyEvent(KeyEvent evt)
{
//JextFrame view = MenuAction.getJextParent(evt);
evt = KeyEventWorkaround.processKeyEvent(evt);
if (evt == null)
return;
InputHandler inputHandler = view.getInputHandler();
KeyListener keyEventInterceptor = view.getKeyEventInterceptor();
switch (evt.getID())
{
case KeyEvent.KEY_TYPED:
if (keyEventInterceptor != null)
keyEventInterceptor.keyTyped(evt);
else
inputHandler.keyTyped(evt);
break;
case KeyEvent.KEY_PRESSED:
if (keyEventInterceptor != null)
keyEventInterceptor.keyPressed(evt);
else
inputHandler.keyPressed(evt);
break;
case KeyEvent.KEY_RELEASED:
if (keyEventInterceptor != null)
keyEventInterceptor.keyReleased(evt);
else
inputHandler.keyReleased(evt);
break;
}
if (!evt.isConsumed())
super.processKeyEvent(evt);
}
// package-private members
Segment lineSegment;
// protected members
protected static String CENTER = "center";
protected static String RIGHT = "right";
protected static String LEFT = "left";
protected static String BOTTOM = "bottom";
protected static JEditTextArea focusedComponent;
protected static Timer caretTimer;
protected TextAreaPainter painter;
protected Gutter gutter;
protected JPopupMenu popup;
protected EventListenerList listenerList;
protected MutableCaretEvent caretEvent;
protected boolean caretBlinks;
protected boolean caretVisible;
protected boolean blink;
protected boolean editable;
protected int maxHorizontalScrollWidth;
protected int firstLine;
protected int visibleLines;
protected int electricScroll;
protected int horizontalOffset;
protected JScrollBar vertical;
protected JScrollBar horizontal;
protected boolean scrollBarsInitialized;
protected InputHandler inputHandler;
protected SyntaxDocument document;
protected DocumentHandler documentHandler;
protected boolean documentHandlerInstalled;
protected int selectionStart;
protected int selectionStartLine;
protected int selectionEnd;
protected int selectionEndLine;
protected boolean biasLeft;
protected int bracketPosition;
protected int bracketLine;
protected int magicCaret;
protected boolean overwrite;
protected boolean rectSelect;
protected void fireCaretEvent()
{
Object[] listeners = listenerList.getListenerList();
for (int i = listeners.length - 2; i >= 0; i--)
{
if (listeners[i] == CaretListener.class)
{
((CaretListener) listeners[i + 1]).caretUpdate(caretEvent);
}
}
}
protected void updateBracketHighlight(int newCaretPosition)
{
if (!painter.isBracketHighlightEnabled())
return;
if (bracketLine != -1)
painter.invalidateLine(bracketLine);
if (newCaretPosition == 0)
{
bracketPosition = bracketLine = -1;
return;
}
try
{
int offset = TextUtilities.findMatchingBracket(document, newCaretPosition - 1);
if (offset != -1)
{
bracketLine = getLineOfOffset(offset);
bracketPosition = offset - getLineStartOffset(bracketLine);
if (bracketLine != -1)
painter.invalidateLine(bracketLine);
return;
}
}
catch (BadLocationException bl)
{
bl.printStackTrace();
}
bracketLine = bracketPosition = -1;
}
protected void documentChanged(DocumentEvent evt)
{
DocumentEvent.ElementChange ch = evt.getChange(document.getDefaultRootElement());
int count;
if (ch == null)
count = 0;
else
count = ch.getChildrenAdded().length - ch.getChildrenRemoved().length;
int line = getLineOfOffset(evt.getOffset());
if (count == 0)
{
painter.invalidateLine(line);
}
// do magic stuff
else if (line < firstLine)
{
setFirstLine(firstLine + count);
}
// end of magic stuff
else
{
painter.invalidateLineRange(line, firstLine + visibleLines);
gutter.repaint();
updateScrollBars();
}
}
// private members
// for event handlers only
private int clickCount;
class ScrollLayout implements LayoutManager
{
public void addLayoutComponent(String name, Component comp)
{
if (name.equals(CENTER))
center = comp;
else if (name.equals(RIGHT))
right = comp;
else if (name.equals(LEFT))
left = comp;
else if (name.equals(BOTTOM))
bottom = comp;
else if (name.equals(LEFT_OF_SCROLLBAR))
leftOfScrollBar = comp;
}
public void removeLayoutComponent(Component comp)
{
if (center == comp)
center = null;
else if (right == comp)
right = null;
else if (left == comp)
left = null;
else if (bottom == comp)
bottom = null;
else
leftOfScrollBar = null;
}
public Dimension preferredLayoutSize(Container parent)
{
Dimension dim = new Dimension();
Insets insets = getInsets();
dim.width = insets.left + insets.right;
dim.height = insets.top + insets.bottom;
Dimension leftPref = left.getPreferredSize();
dim.width += leftPref.width;
Dimension centerPref = center.getPreferredSize();
dim.width += centerPref.width;
dim.height += centerPref.height;
Dimension rightPref = right.getPreferredSize();
dim.width += rightPref.width;
Dimension bottomPref = bottom.getPreferredSize();
dim.height += bottomPref.height;
return dim;
}
public Dimension minimumLayoutSize(Container parent)
{
Dimension dim = new Dimension();
Insets insets = getInsets();
dim.width = insets.left + insets.right;
dim.height = insets.top + insets.bottom;
Dimension leftPref = left.getMinimumSize();
dim.width += leftPref.width;
Dimension centerPref = center.getMinimumSize();
dim.width += centerPref.width;
dim.height += centerPref.height;
Dimension rightPref = right.getMinimumSize();
dim.width += rightPref.width;
Dimension bottomPref = bottom.getMinimumSize();
dim.height += bottomPref.height;
return dim;
}
public void layoutContainer(Container parent)
{
Dimension size = parent.getSize();
Insets insets = parent.getInsets();
int itop = insets.top;
int ileft = insets.left;
int ibottom = insets.bottom;
int iright = insets.right;
int rightWidth = right.getPreferredSize().width;
int leftWidth = left.getPreferredSize().width;
int bottomHeight = bottom.getPreferredSize().height;
int centerWidth = size.width - leftWidth - rightWidth - ileft - iright;
int centerHeight = size.height - bottomHeight - itop - ibottom;
left.setBounds(ileft, itop, leftWidth, centerHeight);
center.setBounds(ileft + leftWidth, itop, centerWidth, centerHeight);
right.setBounds(ileft + leftWidth + centerWidth, itop, rightWidth, centerHeight);
if (leftOfScrollBar != null)
{
Dimension dim = leftOfScrollBar.getPreferredSize();
leftOfScrollBar.setBounds(ileft, itop + centerHeight, dim.width, bottomHeight);
ileft += dim.width;
}
bottom.setBounds(ileft, itop + centerHeight, size.width - rightWidth - ileft - iright, bottomHeight);
}
Component center;
Component left;
Component right;
Component bottom;
Component leftOfScrollBar;
}
static class CaretBlinker implements ActionListener
{
public void actionPerformed(ActionEvent evt)
{
if (focusedComponent != null && focusedComponent.hasFocus())
focusedComponent.blinkCaret();
}
}
class MutableCaretEvent extends CaretEvent
{
MutableCaretEvent()
{
super(JEditTextArea.this);
}
public int getDot()
{
return getCaretPosition();
}
public int getMark()
{
return getMarkPosition();
}
}
class AdjustHandler implements AdjustmentListener
{
public void adjustmentValueChanged(final AdjustmentEvent evt)
{
if (!scrollBarsInitialized)
return;
// If this is not done, mousePressed events accumilate
// and the result is that scrolling doesn't stop after
// the mouse is released
SwingUtilities.invokeLater(new Runnable()
{
public void run()
{
if (evt.getAdjustable() == vertical)
setFirstLine(vertical.getValue());
else
setHorizontalOffset(-horizontal.getValue());
}
}
);
}
}
class ComponentHandler extends ComponentAdapter
{
public void componentResized(ComponentEvent evt)
{
recalculateVisibleLines();
scrollBarsInitialized = true;
}
}
class DocumentHandler implements DocumentListener
{
public void insertUpdate(DocumentEvent evt)
{
documentChanged(evt);
int offset = evt.getOffset();
int length = evt.getLength();
int newStart;
int newEnd;
boolean change = false;
if (selectionStart > offset || (selectionStart == selectionEnd && selectionStart == offset))
{
change = true;
newStart = selectionStart + length;
}
else
newStart = selectionStart;
if (selectionEnd >= offset)
{
change = true;
newEnd = selectionEnd + length;
}
else
newEnd = selectionEnd;
if (change)
select(newStart, newEnd);
else
updateBracketHighlight(getCaretPosition());
}
public void removeUpdate(DocumentEvent evt)
{
documentChanged(evt);
int offset = evt.getOffset();
int length = evt.getLength();
int newStart;
int newEnd;
boolean change = false;
if (selectionStart > offset)
{
change = true;
if (selectionStart > offset + length)
newStart = selectionStart - length;
else
newStart = offset;
}
else
newStart = selectionStart;
if (selectionEnd > offset)
{
change = true;
if (selectionEnd > offset + length)
newEnd = selectionEnd - length;
else
newEnd = offset;
}
else
newEnd = selectionEnd;
if (change)
select(newStart, newEnd);
else
updateBracketHighlight(getCaretPosition());
}
public void changedUpdate(DocumentEvent evt)
{
}
}
class DragHandler implements MouseMotionListener
{
public void mouseDragged(MouseEvent evt)
{
if (popup != null && popup.isVisible())
return;
if (dragText)
{
boolean ctrldown = evt.isControlDown();
if (ctrldown != dragControlDown)
dragCursor = false;
dragControlDown = ctrldown;
if (!dragCursor)
{
if (evt.isControlDown())
painter.setCursor(java.awt.dnd.DragSource.DefaultCopyDrop);
else
painter.setCursor(java.awt.dnd.DragSource.DefaultMoveDrop);
dragCursor = true;
}
setShadowCaretPosition(xyToOffset(evt.getX(), evt.getY()));
return;
}
setSelectionRectangular(evt.isControlDown());
switch (clickCount)
{
case 1:
doSingleDrag(evt);
break;
case 2:
doDoubleDrag(evt);
break;
case 3:
doTripleDrag(evt);
break;
}
}
public void mouseMoved(MouseEvent evt)
{
}
private void doSingleDrag(MouseEvent evt)
{
select(getMarkPosition(), xyToOffset(evt.getX(), evt.getY()));
}
private void doDoubleDrag(MouseEvent evt)
{
int markLine = getMarkLine();
int markLineStart = getLineStartOffset(markLine);
int markLineLength = getLineLength(markLine);
int mark = getMarkPosition() - markLineStart;
int line = yToLine(evt.getY());
int lineStart = getLineStartOffset(line);
int lineLength = getLineLength(line);
int offset = xToOffset(line, evt.getX());
String lineText = getLineText(line);
String markLineText = getLineText(markLine);
String noWordSep = (String) document.getProperty("noWordSep");
if (markLineStart + mark > lineStart + offset)
{
if (offset != 0 && offset != lineLength)
{
offset = TextUtilities.findWordStart(lineText, offset, noWordSep);
}
if (markLineLength != 0)
{
mark = TextUtilities.findWordEnd(markLineText, mark, noWordSep);
}
}
else
{
if (offset != 0 && lineLength != 0)
{
offset = TextUtilities.findWordEnd(lineText, offset, noWordSep);
}
if (mark != 0 && mark != markLineLength)
{
mark = TextUtilities.findWordStart(markLineText, mark, noWordSep);
}
}
select(markLineStart + mark, lineStart + offset);
}
private void doTripleDrag(MouseEvent evt)
{
int mark = getMarkLine();
int mouse = yToLine(evt.getY());
int offset = xToOffset(mouse, evt.getX());
if (mark > mouse)
{
mark = getLineEndOffset(mark) - 1;
if (offset == getLineLength(mouse))
mouse = getLineEndOffset(mouse) - 1;
else
mouse = getLineStartOffset(mouse);
}
else
{
mark = getLineStartOffset(mark);
if (offset == 0)
mouse = getLineStartOffset(mouse);
else
mouse = getLineEndOffset(mouse) - 1;
}
select(mark, mouse);
}
}
class FocusHandler implements FocusListener
{
public void focusGained(FocusEvent evt)
{
setCaretVisible(true);
focusedComponent = JEditTextArea.this;
}
public void focusLost(FocusEvent evt)
{
setCaretVisible(false);
focusedComponent = null;
}
}
//////////////////////////////////////////////////////////////////
// ONE CLICK HACK
//////////////////////////////////////////////////////////////////
public void setOneClick(org.jext.OneClickAction oneClick)
{
setOneClick(oneClick, null);
}
public void setOneClick(org.jext.OneClickAction oneClick, ActionEvent oneClickEvent)
{
this.oneClick = oneClick;
this.oneClickEvent = oneClickEvent;
JextTextArea area = (JextTextArea) this;
area.getJextParent().setStatus(area);
}
protected ActionEvent oneClickEvent;
public org.jext.OneClickAction oneClick;
//////////////////////////////////////////////////////////////////
// END OF ONE CLICK HACK
//////////////////////////////////////////////////////////////////
private boolean dragText = false;
private boolean dragCursor = false;
private boolean dragControlDown = false;
private int shadowCaretLine = -1;
private int shadowCaretOffset = -1;
public void setShadowCaretPosition(int offset)
{
this.shadowCaretOffset = offset;
if (offset == -1)
{
shadowCaretLine = -1;
} else {
shadowCaretLine = getLineOfOffset(offset);
if (!scrollTo(shadowCaretLine, shadowCaretOffset - getLineStartOffset(shadowCaretLine)))
repaint();
}
}
public int getShadowCaretLine()
{
return shadowCaretLine;
}
public int getShadowCaretPosition()
{
return shadowCaretOffset;
}
class MouseHandler extends MouseAdapter
{
public void mouseReleased(MouseEvent evt)
{
int line = yToLine(evt.getY());
int offset = xToOffset(line, evt.getX());
int dot = getLineStartOffset(line) + offset;
if (dragText)
{
if (dot > getSelectionStart() && dot < getSelectionEnd())
{
doSingleClick(evt, line, offset, dot);
} else {
// moves text
String text = getSelectedText();
try
{
if (!evt.isControlDown())
{
if (getSelectionStart() < dot)
dot -= text.length();
setSelectedText("");
}
document.insertString(dot, text, null);
select(dot, dot + text.length());
} catch (BadLocationException ble) { }
}
setShadowCaretPosition(-1);
dragText = false;
if (dragCursor)
{
dragCursor = false;
painter.setCursor(Cursor.getPredefinedCursor(Cursor.TEXT_CURSOR));
}
}
}
public void mousePressed(MouseEvent evt)
{
requestFocus();
// Focus events not fired sometimes?
setCaretVisible(true);
focusedComponent = JEditTextArea.this;
if ((evt.getModifiers() & InputEvent.BUTTON3_MASK) != 0 && popup != null)
{
doRightClick(evt);
return;
}
int line = yToLine(evt.getY());
int offset = xToOffset(line, evt.getX());
int dot = getLineStartOffset(line) + offset;
clickCount = evt.getClickCount();
switch (clickCount)
{
case 1:
if (getSelectionStart() != getSelectionEnd() &&
dot > getSelectionStart() && dot < getSelectionEnd())
{
dragText = true;
} else
doSingleClick(evt, line, offset, dot);
break;
case 2:
// It uses the bracket matching stuff, so
// it can throw a BLE
try
{
doDoubleClick(evt, line, offset, dot);
} catch (BadLocationException bl) {
bl.printStackTrace();
}
break;
case 3:
doTripleClick(evt, line, offset, dot);
break;
}
}
private void doSingleClick(MouseEvent evt, int line, int offset, int dot)
{
if (evt.isShiftDown())
{
rectSelect = evt.isControlDown();
select(getMarkPosition(), dot);
} else
setCaretPosition(dot);
if (oneClick != null)
oneClick.oneClickActionPerformed(oneClickEvent);
((JextTextArea) JEditTextArea.this).endCurrentEdit();
}
private void doDoubleClick(MouseEvent evt, int line, int offset, int dot) throws BadLocationException
{
// Ignore empty lines
if (getLineLength(line) == 0)
return;
try
{
int bracket = TextUtilities.findMatchingBracket(document, Math.max(0, dot - 1));
if (bracket != -1)
{
int mark = getMarkPosition();
// Hack
if (bracket > mark)
{
bracket++;
mark--;
}
select(mark, bracket);
return;
}
} catch (BadLocationException bl) {
bl.printStackTrace();
}
// Ok, it's not a bracket... select the word
String lineText = getLineText(line);
String noWordSep = (String) document.getProperty("noWordSep");
if (offset == getLineLength(line))
offset--;
int wordStart = TextUtilities.findWordStart(lineText, offset, noWordSep);
int wordEnd = TextUtilities.findWordEnd(lineText, offset + 1, noWordSep);
int lineStart = getLineStartOffset(line);
select(lineStart + wordStart, lineStart + wordEnd);
}
private void doTripleClick(MouseEvent evt, int line, int offset, int dot)
{
select(getLineStartOffset(line), getLineEndOffset(line) - 1);
}
private void doRightClick(MouseEvent evt)
{
int x = evt.getX();
int y = evt.getY();
JextFrame view = ((JextTextArea) JEditTextArea.this).getJextParent();
if (view != null)
{
Dimension viewSize = view.getSize();
Point viewLocation = view.getLocationOnScreen();
Insets viewInsets = view.getInsets();
Point tapLocation = painter.getLocationOnScreen();
Dimension popupSize = popup.getSize();
if ((tapLocation.x + x + popupSize.width) > (viewLocation.x + viewSize.width - viewInsets.right))
x -= popupSize.width;
if ((tapLocation.y + y + popupSize.height) > (viewLocation.y + viewSize.height - viewInsets.bottom))
y = (viewLocation.y + viewSize.height - viewInsets.bottom) - (tapLocation.y + popupSize.height);
}
popup.show(painter, x, y);
}
}
class CaretUndo extends AbstractUndoableEdit
{
private int start;
private int end;
private int newStart;
private int newEnd;
CaretUndo(int start, int end, int newStart, int newEnd)
{
this.start = start;
this.end = end;
this.newStart = newStart;
this.newEnd = newEnd;
}
public boolean isSignificant()
{
return false;
}
public String getPresentationName()
{
return "caret move";
}
public void undo() throws CannotUndoException
{
super.undo();
select(start, end);
}
public boolean addEdit(UndoableEdit edit)
{
if (edit instanceof CaretUndo)
{
CaretUndo cedit = (CaretUndo) edit;
cedit.die();
return true;
} else
return false;
}
public String toString()
{
return getPresentationName() + "[start=" + start + ",end=" + end + "]";
}
}
static
{
caretTimer = new Timer(500, new CaretBlinker());
caretTimer.setInitialDelay(500);
caretTimer.start();
}
}
/*
* ChangeLog:
* $Log: JEditTextArea.java,v $
* Revision 1.10 2003/06/30 17:31:08 blaisorblade
* Fix for line-ends.
*
* Revision 1.9 2003/06/29 13:37:27 gfx
* Support of JDK 1.4.2
*
* Revision 1.8 2003/03/08 21:27:14 gfx
* Added a line term selector on each text area
*
* Revision 1.7 2003/01/21 23:53:16 gfx
* New stuffs
*
* Revision 1.6 2002/08/08 13:21:18 orangeherbert
* KeyEvent workaround added for ALT+arrows. Thanks and credit to Slava.
*
* Revision 1.5 2001/09/27 23:38:34 gfx
* Jext 3.0pre10 |
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