Java example source code file (XTextAreaPeer.java)
The XTextAreaPeer.java Java example source code
/*
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* 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).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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package sun.awt.X11;
import java.awt.*;
import java.awt.peer.ComponentPeer;
import java.awt.peer.TextAreaPeer;
import java.awt.event.*;
import javax.swing.event.DocumentListener;
import javax.swing.event.DocumentEvent;
import javax.swing.JTextArea;
import javax.swing.JComponent;
import javax.swing.JScrollPane;
import javax.swing.JScrollBar;
import javax.swing.plaf.ComponentUI;
import com.sun.java.swing.plaf.motif.MotifTextAreaUI;
import javax.swing.plaf.UIResource;
import javax.swing.UIDefaults;
import javax.swing.border.Border;
import javax.swing.border.EmptyBorder;
import javax.swing.border.CompoundBorder;
import javax.swing.border.AbstractBorder;
import javax.swing.JButton;
import javax.swing.JViewport;
import javax.swing.InputMap;
import javax.swing.SwingUtilities;
import javax.swing.TransferHandler;
import javax.swing.plaf.basic.BasicArrowButton;
import javax.swing.plaf.basic.BasicScrollBarUI;
import javax.swing.plaf.basic.BasicScrollPaneUI;
import java.beans.PropertyChangeEvent;
import java.beans.PropertyChangeListener;
import javax.swing.text.Caret;
import javax.swing.text.DefaultCaret;
import javax.swing.text.JTextComponent;
import javax.swing.plaf.BorderUIResource;
import java.awt.im.InputMethodRequests;
import sun.awt.CausedFocusEvent;
import sun.awt.AWTAccessor;
import sun.awt.SunToolkit;
final class XTextAreaPeer extends XComponentPeer implements TextAreaPeer {
private final AWTTextPane textPane;
private final AWTTextArea jtext;
private final boolean firstChangeSkipped;
private final JavaMouseEventHandler javaMouseEventHandler =
new JavaMouseEventHandler(this);
/**
* Create a Text area.
*/
XTextAreaPeer(TextArea target) {
super(target);
// some initializations require that target be set even
// though init(target) has not been called
this.target = target;
//ComponentAccessor.enableEvents(target,AWTEvent.MOUSE_WHEEL_EVENT_MASK);
String text = target.getText();
jtext = new AWTTextArea(text, this);
jtext.setWrapStyleWord(true);
jtext.getDocument().addDocumentListener(jtext);
XToolkit.specialPeerMap.put(jtext,this);
textPane = new AWTTextPane(jtext,this, target.getParent());
setBounds(x, y, width, height, SET_BOUNDS);
textPane.setVisible(true);
textPane.validate();
AWTAccessor.ComponentAccessor compAccessor = AWTAccessor.getComponentAccessor();
foreground = compAccessor.getForeground(target);
if (foreground == null) {
foreground = SystemColor.textText;
}
setForeground(foreground);
background = compAccessor.getBackground(target);
if (background == null) {
if (target.isEditable()) background = SystemColor.text;
else background = SystemColor.control;
}
setBackground(background);
if (!target.isBackgroundSet()) {
// This is a way to set the background color of the TextArea
// without calling setBackground - go through accessor
compAccessor.setBackground(target, background);
}
if (!target.isForegroundSet()) {
target.setForeground(SystemColor.textText);
}
setFont(font);
// set the text of this object to the text of its target
setTextImpl(target.getText()); //?? should this be setText
int start = target.getSelectionStart();
int end = target.getSelectionEnd();
// Fix for 5100200
// Restoring Motif behaviour
// Since the end position of the selected text can be greater then the length of the text,
// so we should set caret to max position of the text
setCaretPosition(Math.min(end, text.length()));
if (end > start) {
// Should be called after setText() and setCaretPosition()
select(start, end);
}
setEditable(target.isEditable());
setScrollBarVisibility();
// After this line we should not change the component's text
firstChangeSkipped = true;
}
@Override
public void dispose() {
XToolkit.specialPeerMap.remove(jtext);
// visible caret has a timer thread which must be stopped
jtext.getCaret().setVisible(false);
jtext.removeNotify();
textPane.removeNotify();
super.dispose();
}
/*
* The method overrides one from XComponentPeer
* If ignoreSubComponents=={@code true} it calls super.
* If ignoreSubComponents=={@code false} it uses the XTextArea machinery
* to change cursor appropriately. In particular it changes the cursor to
* default if over scrollbars.
*/
@Override
public void pSetCursor(Cursor cursor, boolean ignoreSubComponents) {
if (ignoreSubComponents ||
javaMouseEventHandler == null) {
super.pSetCursor(cursor, true);
return;
}
Point cursorPos = new Point();
((XGlobalCursorManager)XGlobalCursorManager.getCursorManager()).getCursorPos(cursorPos);
final Point onScreen = getLocationOnScreen();
Point localPoint = new Point(cursorPos.x - onScreen.x, cursorPos.y - onScreen.y );
javaMouseEventHandler.setPointerToUnderPoint(localPoint);
javaMouseEventHandler.setCursor();
}
private void setScrollBarVisibility() {
int visibility = ((TextArea)target).getScrollbarVisibility();
jtext.setLineWrap(false);
if (visibility == TextArea.SCROLLBARS_NONE) {
textPane.setHorizontalScrollBarPolicy(JScrollPane.HORIZONTAL_SCROLLBAR_NEVER);
textPane.setVerticalScrollBarPolicy(JScrollPane.VERTICAL_SCROLLBAR_NEVER);
jtext.setLineWrap(true);
}
else if (visibility == TextArea.SCROLLBARS_BOTH) {
textPane.setHorizontalScrollBarPolicy(JScrollPane.HORIZONTAL_SCROLLBAR_ALWAYS);
textPane.setVerticalScrollBarPolicy(JScrollPane.VERTICAL_SCROLLBAR_ALWAYS);
}
else if (visibility == TextArea.SCROLLBARS_VERTICAL_ONLY) {
textPane.setHorizontalScrollBarPolicy(JScrollPane.HORIZONTAL_SCROLLBAR_NEVER);
textPane.setVerticalScrollBarPolicy(JScrollPane.VERTICAL_SCROLLBAR_ALWAYS);
jtext.setLineWrap(true);
}
else if (visibility == TextArea.SCROLLBARS_HORIZONTAL_ONLY) {
textPane.setVerticalScrollBarPolicy(JScrollPane.VERTICAL_SCROLLBAR_NEVER);
textPane.setHorizontalScrollBarPolicy(JScrollPane.HORIZONTAL_SCROLLBAR_ALWAYS);
}
}
/**
* Compute minimum size.
*/
@Override
public Dimension getMinimumSize() {
return getMinimumSize(10, 60);
}
@Override
public Dimension getPreferredSize(int rows, int cols) {
return getMinimumSize(rows, cols);
}
/**
* @see java.awt.peer.TextAreaPeer
*/
@Override
public Dimension getMinimumSize(int rows, int cols) {
/* Dimension d = null;
if (jtext != null) {
d = jtext.getMinimumSize(rows,cols);
}
return d;
*/
int vsbwidth=0;
int hsbheight=0;
JScrollBar vsb = textPane.getVerticalScrollBar();
if (vsb != null) {
vsbwidth = vsb.getMinimumSize().width;
}
JScrollBar hsb = textPane.getHorizontalScrollBar();
if (hsb != null) {
hsbheight = hsb.getMinimumSize().height;
}
Font f = jtext.getFont();
FontMetrics fm = jtext.getFontMetrics(f);
return new Dimension(fm.charWidth('0') * cols + /*2*XMARGIN +*/ vsbwidth,
fm.getHeight() * rows + /*2*YMARGIN +*/ hsbheight);
}
@Override
public boolean isFocusable() {
return true;
}
@Override
public void setVisible(boolean b) {
super.setVisible(b);
if (textPane != null)
textPane.setVisible(b);
}
void repaintText() {
jtext.repaintNow();
}
@Override
public void focusGained(FocusEvent e) {
super.focusGained(e);
jtext.forwardFocusGained(e);
}
@Override
public void focusLost(FocusEvent e) {
super.focusLost(e);
jtext.forwardFocusLost(e);
}
/**
* Paint the component
* this method is called when the repaint instruction has been used
*/
@Override
public void repaint() {
if (textPane != null) {
//textPane.validate();
textPane.repaint();
}
}
@Override
void paintPeer(final Graphics g) {
if (textPane != null) {
textPane.paint(g);
}
}
@Override
public void setBounds(int x, int y, int width, int height, int op) {
super.setBounds(x, y, width, height, op);
if (textPane != null) {
/*
* Fixed 6277332, 6198290:
* the coordinates is coming (to peer): relatively to closest HW parent
* the coordinates is setting (to textPane): relatively to closest ANY parent
* the parent of peer is target.getParent()
* the parent of textPane is the same
* see 6277332, 6198290 for more information
*/
int childX = x;
int childY = y;
Component parent = target.getParent();
// we up to heavyweight parent in order to be sure
// that the coordinates of the text pane is relatively to closest parent
while (parent.isLightweight()){
childX -= parent.getX();
childY -= parent.getY();
parent = parent.getParent();
}
textPane.setBounds(childX,childY,width,height);
textPane.validate();
}
}
@Override
void handleJavaKeyEvent(KeyEvent e) {
AWTAccessor.getComponentAccessor().processEvent(jtext,e);
}
@Override
public boolean handlesWheelScrolling() { return true; }
@Override
void handleJavaMouseWheelEvent(MouseWheelEvent e) {
AWTAccessor.getComponentAccessor().processEvent(textPane, e);
}
@Override
public void handleJavaMouseEvent( MouseEvent e ) {
super.handleJavaMouseEvent( e );
javaMouseEventHandler.handle( e );
}
@Override
void handleJavaInputMethodEvent(InputMethodEvent e) {
if (jtext != null)
jtext.processInputMethodEventPublic((InputMethodEvent)e);
}
/**
* @see java.awt.peer.TextComponentPeer
*/
@Override
public void select(int s, int e) {
jtext.select(s, e);
// Fixed 5100806
// We must take care that Swing components repainted correctly
jtext.repaint();
}
@Override
public void setBackground(Color c) {
super.setBackground(c);
// synchronized (getStateLock()) {
// background = c;
// }
if (jtext != null) {
jtext.setBackground(c);
jtext.setSelectedTextColor(c);
}
// repaintText();
}
@Override
public void setForeground(Color c) {
super.setForeground(c);
// synchronized (getStateLock()) {
// foreground = c;
// }
if (jtext != null) {
jtext.setForeground(foreground);
jtext.setSelectionColor(foreground);
jtext.setCaretColor(foreground);
}
// repaintText();
}
@Override
public void setFont(Font f) {
super.setFont(f);
// synchronized (getStateLock()) {
// font = f;
// }
if (jtext != null) {
jtext.setFont(font);
}
textPane.validate();
}
/**
* @see java.awt.peer.TextComponentPeer
*/
@Override
public void setEditable(boolean editable) {
if (jtext != null) jtext.setEditable(editable);
repaintText();
}
/**
* @see java.awt.peer.ComponentPeer
*/
@Override
public void setEnabled(boolean enabled) {
super.setEnabled(enabled);
if (jtext != null) {
jtext.setEnabled(enabled);
jtext.repaint();
}
}
/**
* @see java.awt.peer.TextComponentPeer
*/
@Override
public InputMethodRequests getInputMethodRequests() {
if (jtext != null) return jtext.getInputMethodRequests();
else return null;
}
/**
* @see java.awt.peer.TextComponentPeer
*/
@Override
public int getSelectionStart() {
return jtext.getSelectionStart();
}
/**
* @see java.awt.peer.TextComponentPeer
*/
@Override
public int getSelectionEnd() {
return jtext.getSelectionEnd();
}
/**
* @see java.awt.peer.TextComponentPeer
*/
@Override
public String getText() {
return jtext.getText();
}
/**
* @see java.awt.peer.TextComponentPeer
*/
@Override
public void setText(String text) {
setTextImpl(text);
repaintText();
}
private void setTextImpl(String txt) {
if (jtext != null) {
// JTextArea.setText() posts two different events (remove & insert).
// Since we make no differences between text events,
// the document listener has to be disabled while
// JTextArea.setText() is called.
jtext.getDocument().removeDocumentListener(jtext);
jtext.setText(txt);
if (firstChangeSkipped) {
postEvent(new TextEvent(target, TextEvent.TEXT_VALUE_CHANGED));
}
jtext.getDocument().addDocumentListener(jtext);
}
}
/**
* insert the text "txt on position "pos" in the array lines
* @see java.awt.peer.TextAreaPeer
*/
@Override
public void insert(String txt, int p) {
if (jtext != null) {
boolean doScroll = (p >= jtext.getDocument().getLength() && jtext.getDocument().getLength() != 0);
jtext.insert(txt,p);
textPane.validate();
if (doScroll) {
JScrollBar bar = textPane.getVerticalScrollBar();
if (bar != null) {
bar.setValue(bar.getMaximum()-bar.getVisibleAmount());
}
}
}
}
/**
* replace the text between the position "s" and "e" with "txt"
* @see java.awt.peer.TextAreaPeer
*/
@Override
public void replaceRange(String txt, int s, int e) {
if (jtext != null) {
// JTextArea.replaceRange() posts two different events.
// Since we make no differences between text events,
// the document listener has to be disabled while
// JTextArea.replaceRange() is called.
jtext.getDocument().removeDocumentListener(jtext);
jtext.replaceRange(txt, s, e);
postEvent(new TextEvent(target, TextEvent.TEXT_VALUE_CHANGED));
jtext.getDocument().addDocumentListener(jtext);
}
}
/**
* to be implemented.
* @see java.awt.peer.TextComponentPeer
*/
@Override
public void setCaretPosition(int position) {
jtext.setCaretPosition(position);
}
/**
* to be implemented.
* @see java.awt.peer.TextComponentPeer
*/
@Override
public int getCaretPosition() {
return jtext.getCaretPosition();
}
final class AWTTextAreaUI extends MotifTextAreaUI {
private JTextArea jta;
@Override
protected String getPropertyPrefix() { return "TextArea"; }
@Override
public void installUI(JComponent c) {
super.installUI(c);
jta = (JTextArea) c;
JTextArea editor = jta;
UIDefaults uidefaults = XToolkit.getUIDefaults();
String prefix = getPropertyPrefix();
Font f = editor.getFont();
if ((f == null) || (f instanceof UIResource)) {
editor.setFont(uidefaults.getFont(prefix + ".font"));
}
Color bg = editor.getBackground();
if ((bg == null) || (bg instanceof UIResource)) {
editor.setBackground(uidefaults.getColor(prefix + ".background"));
}
Color fg = editor.getForeground();
if ((fg == null) || (fg instanceof UIResource)) {
editor.setForeground(uidefaults.getColor(prefix + ".foreground"));
}
Color color = editor.getCaretColor();
if ((color == null) || (color instanceof UIResource)) {
editor.setCaretColor(uidefaults.getColor(prefix + ".caretForeground"));
}
Color s = editor.getSelectionColor();
if ((s == null) || (s instanceof UIResource)) {
editor.setSelectionColor(uidefaults.getColor(prefix + ".selectionBackground"));
}
Color sfg = editor.getSelectedTextColor();
if ((sfg == null) || (sfg instanceof UIResource)) {
editor.setSelectedTextColor(uidefaults.getColor(prefix + ".selectionForeground"));
}
Color dfg = editor.getDisabledTextColor();
if ((dfg == null) || (dfg instanceof UIResource)) {
editor.setDisabledTextColor(uidefaults.getColor(prefix + ".inactiveForeground"));
}
Border b = new BevelBorder(false,SystemColor.controlDkShadow,SystemColor.controlLtHighlight);
editor.setBorder(new BorderUIResource.CompoundBorderUIResource(
b,new EmptyBorder(2, 2, 2, 2)));
Insets margin = editor.getMargin();
if (margin == null || margin instanceof UIResource) {
editor.setMargin(uidefaults.getInsets(prefix + ".margin"));
}
}
@Override
protected void installKeyboardActions() {
super.installKeyboardActions();
JTextComponent comp = getComponent();
UIDefaults uidefaults = XToolkit.getUIDefaults();
String prefix = getPropertyPrefix();
InputMap map = (InputMap)uidefaults.get(prefix + ".focusInputMap");
if (map != null) {
SwingUtilities.replaceUIInputMap(comp, JComponent.WHEN_FOCUSED,
map);
}
}
@Override
protected Caret createCaret() {
return new XAWTCaret();
}
}
static final class XAWTCaret extends DefaultCaret {
@Override
public void focusGained(FocusEvent e) {
super.focusGained(e);
if (getComponent().isEnabled()){
// Make sure the cursor is visible in case of non-editable TextArea
super.setVisible(true);
}
getComponent().repaint();
}
@Override
public void focusLost(FocusEvent e) {
super.focusLost(e);
getComponent().repaint();
}
// Fix for 5100950: textarea.getSelectedText() returns the de-selected text, on XToolkit
// Restoring Motif behaviour
// If the text is unhighlighted then we should sets the selection range to zero
@Override
public void setSelectionVisible(boolean vis) {
if (vis){
super.setSelectionVisible(vis);
}else{
// In order to de-select the selection
setDot(getDot());
}
}
}
final class XAWTScrollBarButton extends BasicArrowButton {
private UIDefaults uidefaults = XToolkit.getUIDefaults();
private Color darkShadow = SystemColor.controlShadow;
private Color lightShadow = SystemColor.controlLtHighlight;
private Color buttonBack = uidefaults.getColor("ScrollBar.track");
XAWTScrollBarButton(int direction) {
super(direction);
switch (direction) {
case NORTH:
case SOUTH:
case EAST:
case WEST:
this.direction = direction;
break;
default:
throw new IllegalArgumentException("invalid direction");
}
setRequestFocusEnabled(false);
setOpaque(true);
setBackground(uidefaults.getColor("ScrollBar.thumb"));
setForeground(uidefaults.getColor("ScrollBar.foreground"));
}
@Override
public Dimension getPreferredSize() {
switch (direction) {
case NORTH:
case SOUTH:
return new Dimension(11, 12);
case EAST:
case WEST:
default:
return new Dimension(12, 11);
}
}
@Override
public Dimension getMinimumSize() {
return getPreferredSize();
}
@Override
public Dimension getMaximumSize() {
return getPreferredSize();
}
@Override
public boolean isFocusTraversable() {
return false;
}
@Override
public void paint(Graphics g)
{
int w = getWidth();
int h = getHeight();
if (isOpaque()) {
g.setColor(buttonBack);
g.fillRect(0, 0, w, h);
}
boolean isPressed = getModel().isPressed();
Color lead = (isPressed) ? darkShadow : lightShadow;
Color trail = (isPressed) ? lightShadow : darkShadow;
Color fill = getBackground();
int cx = w / 2;
int cy = h / 2;
int s = Math.min(w, h);
switch (direction) {
case NORTH:
g.setColor(lead);
g.drawLine(cx, 0, cx, 0);
for (int x = cx - 1, y = 1, dx = 1; y <= s - 2; y += 2) {
g.setColor(lead);
g.drawLine(x, y, x, y);
if (y >= (s - 2)) {
g.drawLine(x, y + 1, x, y + 1);
}
g.setColor(fill);
g.drawLine(x + 1, y, x + dx, y);
if (y < (s - 2)) {
g.drawLine(x, y + 1, x + dx + 1, y + 1);
}
g.setColor(trail);
g.drawLine(x + dx + 1, y, x + dx + 1, y);
if (y >= (s - 2)) {
g.drawLine(x + 1, y + 1, x + dx + 1, y + 1);
}
dx += 2;
x -= 1;
}
break;
case SOUTH:
g.setColor(trail);
g.drawLine(cx, s, cx, s);
for (int x = cx - 1, y = s - 1, dx = 1; y >= 1; y -= 2) {
g.setColor(lead);
g.drawLine(x, y, x, y);
if (y <= 2) {
g.drawLine(x, y - 1, x + dx + 1, y - 1);
}
g.setColor(fill);
g.drawLine(x + 1, y, x + dx, y);
if (y > 2) {
g.drawLine(x, y - 1, x + dx + 1, y - 1);
}
g.setColor(trail);
g.drawLine(x + dx + 1, y, x + dx + 1, y);
dx += 2;
x -= 1;
}
break;
case EAST:
g.setColor(lead);
g.drawLine(s, cy, s, cy);
for (int y = cy - 1, x = s - 1, dy = 1; x >= 1; x -= 2) {
g.setColor(lead);
g.drawLine(x, y, x, y);
if (x <= 2) {
g.drawLine(x - 1, y, x - 1, y + dy + 1);
}
g.setColor(fill);
g.drawLine(x, y + 1, x, y + dy);
if (x > 2) {
g.drawLine(x - 1, y, x - 1, y + dy + 1);
}
g.setColor(trail);
g.drawLine(x, y + dy + 1, x, y + dy + 1);
dy += 2;
y -= 1;
}
break;
case WEST:
g.setColor(trail);
g.drawLine(0, cy, 0, cy);
for (int y = cy - 1, x = 1, dy = 1; x <= s - 2; x += 2) {
g.setColor(lead);
g.drawLine(x, y, x, y);
if (x >= (s - 2)) {
g.drawLine(x + 1, y, x + 1, y);
}
g.setColor(fill);
g.drawLine(x, y + 1, x, y + dy);
if (x < (s - 2)) {
g.drawLine(x + 1, y, x + 1, y + dy + 1);
}
g.setColor(trail);
g.drawLine(x, y + dy + 1, x, y + dy + 1);
if (x >= (s - 2)) {
g.drawLine(x + 1, y + 1, x + 1, y + dy + 1);
}
dy += 2;
y -= 1;
}
break;
}
}
}
final class XAWTScrollBarUI extends BasicScrollBarUI {
@Override
protected void installDefaults()
{
super.installDefaults();
scrollbar.setBorder(new BevelBorder(false,SystemColor.controlDkShadow,SystemColor.controlLtHighlight) );
}
@Override
protected void configureScrollBarColors() {
UIDefaults uidefaults = XToolkit.getUIDefaults();
Color bg = scrollbar.getBackground();
if (bg == null || bg instanceof UIResource) {
scrollbar.setBackground(uidefaults.getColor("ScrollBar.background"));
}
Color fg = scrollbar.getForeground();
if (fg == null || fg instanceof UIResource) {
scrollbar.setForeground(uidefaults.getColor("ScrollBar.foreground"));
}
thumbHighlightColor = uidefaults.getColor("ScrollBar.thumbHighlight");
thumbLightShadowColor = uidefaults.getColor("ScrollBar.thumbShadow");
thumbDarkShadowColor = uidefaults.getColor("ScrollBar.thumbDarkShadow");
thumbColor = uidefaults.getColor("ScrollBar.thumb");
trackColor = uidefaults.getColor("ScrollBar.track");
trackHighlightColor = uidefaults.getColor("ScrollBar.trackHighlight");
}
@Override
protected JButton createDecreaseButton(int orientation) {
JButton b = new XAWTScrollBarButton(orientation);
return b;
}
@Override
protected JButton createIncreaseButton(int orientation) {
JButton b = new XAWTScrollBarButton(orientation);
return b;
}
public JButton getDecreaseButton(){
return decrButton;
}
public JButton getIncreaseButton(){
return incrButton;
}
@Override
public void paint(Graphics g, JComponent c) {
paintTrack(g, c, getTrackBounds());
Rectangle thumbBounds = getThumbBounds();
paintThumb(g, c, thumbBounds);
}
@Override
public void paintThumb(Graphics g, JComponent c, Rectangle thumbBounds)
{
if(!scrollbar.isEnabled()) {
return;
}
if (thumbBounds.isEmpty())
thumbBounds = getTrackBounds();
int w = thumbBounds.width;
int h = thumbBounds.height;
g.translate(thumbBounds.x, thumbBounds.y);
g.setColor(thumbColor);
g.fillRect(0, 0, w-1, h-1);
g.setColor(thumbHighlightColor);
g.drawLine(0, 0, 0, h-1);
g.drawLine(1, 0, w-1, 0);
g.setColor(thumbLightShadowColor);
g.drawLine(1, h-1, w-1, h-1);
g.drawLine(w-1, 1, w-1, h-2);
g.translate(-thumbBounds.x, -thumbBounds.y);
}
}
final class AWTTextArea extends JTextArea implements DocumentListener {
private boolean isFocused = false;
private final XTextAreaPeer peer;
AWTTextArea(String text, XTextAreaPeer peer) {
super(text);
setFocusable(false);
this.peer = peer;
}
@Override
public void insertUpdate(DocumentEvent e) {
if (peer != null) {
peer.postEvent(new TextEvent(peer.target,
TextEvent.TEXT_VALUE_CHANGED));
}
}
@Override
public void removeUpdate(DocumentEvent e) {
if (peer != null) {
peer.postEvent(new TextEvent(peer.target,
TextEvent.TEXT_VALUE_CHANGED));
}
}
@Override
public void changedUpdate(DocumentEvent e) {
if (peer != null) {
peer.postEvent(new TextEvent(peer.target,
TextEvent.TEXT_VALUE_CHANGED));
}
}
void forwardFocusGained( FocusEvent e) {
isFocused = true;
FocusEvent fe = CausedFocusEvent.retarget(e, this);
super.processFocusEvent(fe);
}
void forwardFocusLost( FocusEvent e) {
isFocused = false;
FocusEvent fe = CausedFocusEvent.retarget(e, this);
super.processFocusEvent(fe);
}
@Override
public boolean hasFocus() {
return isFocused;
}
public void repaintNow() {
paintImmediately(getBounds());
}
public void processMouseEventPublic(MouseEvent e) {
processMouseEvent(e);
}
public void processMouseMotionEventPublic(MouseEvent e) {
processMouseMotionEvent(e);
}
public void processInputMethodEventPublic(InputMethodEvent e) {
processInputMethodEvent(e);
}
@Override
public void updateUI() {
ComponentUI ui = new AWTTextAreaUI();
setUI(ui);
}
// Fix for 4915454 - override the default implementation to avoid
// loading SystemFlavorMap and associated classes.
@Override
public void setTransferHandler(TransferHandler newHandler) {
TransferHandler oldHandler = (TransferHandler)
getClientProperty(AWTAccessor.getClientPropertyKeyAccessor()
.getJComponent_TRANSFER_HANDLER());
putClientProperty(AWTAccessor.getClientPropertyKeyAccessor()
.getJComponent_TRANSFER_HANDLER(),
newHandler);
firePropertyChange("transferHandler", oldHandler, newHandler);
}
}
final class XAWTScrollPaneUI extends BasicScrollPaneUI {
private final Border vsbMarginBorderR = new EmptyBorder(0, 2, 0, 0);
private final Border vsbMarginBorderL = new EmptyBorder(0, 0, 0, 2);
private final Border hsbMarginBorder = new EmptyBorder(2, 0, 0, 0);
private Border vsbBorder;
private Border hsbBorder;
private PropertyChangeListener propertyChangeHandler;
@Override
protected void installListeners(JScrollPane scrollPane) {
super.installListeners(scrollPane);
propertyChangeHandler = createPropertyChangeHandler();
scrollPane.addPropertyChangeListener(propertyChangeHandler);
}
@Override
public void paint(Graphics g, JComponent c) {
Border vpBorder = scrollpane.getViewportBorder();
if (vpBorder != null) {
Rectangle r = scrollpane.getViewportBorderBounds();
vpBorder.paintBorder(scrollpane, g, r.x, r.y, r.width, r.height);
}
}
protected void uninstallListeners(JScrollPane scrollPane) {
super.uninstallListeners(scrollPane);
scrollPane.removePropertyChangeListener(propertyChangeHandler);
}
private PropertyChangeListener createPropertyChangeHandler() {
return new PropertyChangeListener() {
@Override
public void propertyChange(PropertyChangeEvent e) {
String propertyName = e.getPropertyName();
if (propertyName.equals("componentOrientation")) {
JScrollPane pane = (JScrollPane)e.getSource();
JScrollBar vsb = pane.getVerticalScrollBar();
if (vsb != null) {
if (isLeftToRight(pane)) {
vsbBorder = new CompoundBorder(new EmptyBorder(0, 4, 0, -4),
vsb.getBorder());
} else {
vsbBorder = new CompoundBorder(new EmptyBorder(0, -4, 0, 4),
vsb.getBorder());
}
vsb.setBorder(vsbBorder);
}
}
}};
}
boolean isLeftToRight( Component c ) {
return c.getComponentOrientation().isLeftToRight();
}
@Override
protected void installDefaults(JScrollPane scrollpane) {
Border b = scrollpane.getBorder();
UIDefaults uidefaults = XToolkit.getUIDefaults();
scrollpane.setBorder(uidefaults.getBorder("ScrollPane.border"));
scrollpane.setBackground(uidefaults.getColor("ScrollPane.background"));
scrollpane.setViewportBorder(uidefaults.getBorder("TextField.border"));
JScrollBar vsb = scrollpane.getVerticalScrollBar();
if (vsb != null) {
if (isLeftToRight(scrollpane)) {
vsbBorder = new CompoundBorder(vsbMarginBorderR,
vsb.getBorder());
}
else {
vsbBorder = new CompoundBorder(vsbMarginBorderL,
vsb.getBorder());
}
vsb.setBorder(vsbBorder);
}
JScrollBar hsb = scrollpane.getHorizontalScrollBar();
if (hsb != null) {
hsbBorder = new CompoundBorder(hsbMarginBorder, hsb.getBorder());
hsb.setBorder(hsbBorder);
}
}
@Override
protected void uninstallDefaults(JScrollPane c) {
super.uninstallDefaults(c);
JScrollBar vsb = scrollpane.getVerticalScrollBar();
if (vsb != null) {
if (vsb.getBorder() == vsbBorder) {
vsb.setBorder(null);
}
vsbBorder = null;
}
JScrollBar hsb = scrollpane.getHorizontalScrollBar();
if (hsb != null) {
if (hsb.getBorder() == hsbBorder) {
hsb.setBorder(null);
}
hsbBorder = null;
}
}
}
private class AWTTextPane extends JScrollPane implements FocusListener {
private final JTextArea jtext;
private final XWindow xwin;
private final Color control = SystemColor.control;
private final Color focus = SystemColor.activeCaptionBorder;
AWTTextPane(JTextArea jt, XWindow xwin, Container parent) {
super(jt);
this.xwin = xwin;
setDoubleBuffered(true);
jt.addFocusListener(this);
AWTAccessor.getComponentAccessor().setParent(this,parent);
setViewportBorder(new BevelBorder(false,SystemColor.controlDkShadow,SystemColor.controlLtHighlight) );
this.jtext = jt;
setFocusable(false);
addNotify();
}
@Override
public void invalidate() {
synchronized (getTreeLock()) {
final Container parent = getParent();
AWTAccessor.getComponentAccessor().setParent(this, null);
try {
super.invalidate();
} finally {
AWTAccessor.getComponentAccessor().setParent(this, parent);
}
}
}
@Override
public void focusGained(FocusEvent e) {
Graphics g = getGraphics();
Rectangle r = getViewportBorderBounds();
g.setColor(focus);
g.drawRect(r.x,r.y,r.width,r.height);
g.dispose();
}
@Override
public void focusLost(FocusEvent e) {
Graphics g = getGraphics();
Rectangle r = getViewportBorderBounds();
g.setColor(control);
g.drawRect(r.x,r.y,r.width,r.height);
g.dispose();
}
public Window getRealParent() {
return (Window) xwin.target;
}
@Override
public ComponentPeer getPeer() {
return (ComponentPeer) (xwin);
}
@Override
public void updateUI() {
ComponentUI ui = new XAWTScrollPaneUI();
setUI(ui);
}
@Override
public JScrollBar createVerticalScrollBar() {
return new XAWTScrollBar(JScrollBar.VERTICAL);
}
@Override
public JScrollBar createHorizontalScrollBar() {
return new XAWTScrollBar(JScrollBar.HORIZONTAL);
}
public JTextArea getTextArea () {
return this.jtext;
}
@Override
public Graphics getGraphics() {
return xwin.getGraphics();
}
final class XAWTScrollBar extends ScrollBar {
XAWTScrollBar(int i) {
super(i);
setFocusable(false);
}
@Override
public void updateUI() {
ComponentUI ui = new XAWTScrollBarUI();
setUI(ui);
}
}
}
static class BevelBorder extends AbstractBorder implements UIResource {
private Color darkShadow = SystemColor.controlDkShadow;
private Color lightShadow = SystemColor.controlLtHighlight;
private Color control = SystemColor.controlShadow;
private boolean isRaised;
BevelBorder(boolean isRaised, Color darkShadow, Color lightShadow) {
this.isRaised = isRaised;
this.darkShadow = darkShadow;
this.lightShadow = lightShadow;
}
@Override
public void paintBorder(Component c, Graphics g, int x, int y, int w, int h) {
g.setColor((isRaised) ? lightShadow : darkShadow);
g.drawLine(x, y, x+w-1, y); // top
g.drawLine(x, y+h-1, x, y+1); // left
g.setColor(control);
g.drawLine(x+1, y+1, x+w-2, y+1); // top
g.drawLine(x+1, y+h-1, x+1, y+1); // left
g.setColor((isRaised) ? darkShadow : lightShadow);
g.drawLine(x+1, y+h-1, x+w-1, y+h-1); // bottom
g.drawLine(x+w-1, y+h-1, x+w-1, y+1); // right
g.setColor(control);
g.drawLine(x+1, y+h-2, x+w-2, y+h-2); // bottom
g.drawLine(x+w-2, y+h-2, x+w-2, y+1); // right
}
@Override
public Insets getBorderInsets(Component c) {
return getBorderInsets(c, new Insets(0,0,0,0));
}
@Override
public Insets getBorderInsets(Component c, Insets insets) {
insets.top = insets.left = insets.bottom = insets.right = 2;
return insets;
}
public boolean isOpaque(Component c) {
return true;
}
}
// This class dispatches 'MouseEvent's to 'XTextAreaPeer''s (hidden)
// subcomponents, and overrides mouse cursor, e.g. for scrollbars.
//
// However, current dispatching is a kind of fake, and is tuned to do only
// what is necessary/possible. E.g. no additional mouse-exited/entered
// events are generated, when mouse exits scrollbar and enters viewport
// with JTextArea inside. Actually, no events are ever generated here (for
// now). They are only dispatched as correctly as possible/neccessary.
//
// In future, it would be better to replace fake-emulation of grab-detection
// and event-dispatching here, by reusing some common implementation of this
// functionality. Mouse-cursor setting should also be freed of hacked
// overloading here.
private static final class JavaMouseEventHandler {
private final XTextAreaPeer outer;
private final Pointer current = new Pointer();
private boolean grabbed = false;
JavaMouseEventHandler( XTextAreaPeer outer ) {
this.outer = outer;
}
// 1. We can make grab-tracking emulation here more robust to variations in
// in mouse-events order and consistence. E.g. by using such code:
// if( grabbed && event.getID()==MouseEvent.MOUSE_MOVED ) grabbed = false;
// Or we can also use 'assert'ions.
// 2. WARNING: Currently, while grab-detection mechanism _here_ says, that
// grab is in progress, we do not update 'current'. In case 'current'
// is set to a scrollbar or to a scroll-button, then references to their
// 'Component'-instances are "remembered". And events are dispatched to
// these remembered components, without checking, if XTextAreaPeer has
// replaced these instances with another ones. This also aplies to
// mouse-drags-from-outside (see comment in 'grabbed_update' method).
void handle( MouseEvent event ) {
if ( ! grabbed ) {
// dispatch() needs up-to-date pointer in ungrabbed case.
setPointerToUnderPoint( event.getPoint() );
}
dispatch( event );
boolean wasGrabbed = grabbed;
grabbed_update( event );
if ( wasGrabbed && ! grabbed ) {
setPointerToUnderPoint( event.getPoint() );
}
setCursor();
}
// Following is internally private:
// Here dispatching is performed, of 'MouseEvent's to (some)
// 'XTextAreaPeer''s (hidden) subcomponents.
private void dispatch( MouseEvent event ) {
switch( current.getType() )
{
case TEXT:
Point point = toViewportChildLocalSpace(
outer.textPane.getViewport(), event.getPoint() );
XTextAreaPeer.AWTTextArea jtext = outer.jtext;
MouseEvent newEvent = newMouseEvent( jtext, point, event );
int id = newEvent.getID();
if ( id==MouseEvent.MOUSE_MOVED || id==MouseEvent.MOUSE_DRAGGED ) {
jtext.processMouseMotionEventPublic( newEvent );
} else {
jtext.processMouseEventPublic( newEvent );
}
break;
// We perform (additional) dispatching of events to buttons of
// scrollbar, instead of leaving it to JScrollbar. This is
// required, because of different listeners in Swing and AWT,
// which trigger scrolling (ArrowButtonListener vs. TrackListener,
// accordingly). So we dispatch events to scroll-buttons, to
// invoke a correct Swing button listener.
// See CR 6175401 for more information.
case BAR:
case BUTTON:
Component c = current.getBar();
Point p = toLocalSpace( c, event.getPoint() );
if ( current.getType()==Pointer.Type.BUTTON ) {
c = current.getButton();
p = toLocalSpace( c, p );
}
AWTAccessor.getComponentAccessor().processEvent( c, newMouseEvent( c, p, event ) );
break;
}
}
private static MouseEvent newMouseEvent(
Component source, Point point, MouseEvent template )
{
MouseEvent e = template;
MouseEvent nme = new MouseEvent(
source,
e.getID(), e.getWhen(),
e.getModifiersEx() | e.getModifiers(),
point.x, point.y,
e.getXOnScreen(), e.getYOnScreen(),
e.getClickCount(), e.isPopupTrigger(), e.getButton() );
// Because these MouseEvents are dispatched directly to
// their target, we need to mark them as being
// system-generated here
SunToolkit.setSystemGenerated(nme);
return nme;
}
private void setCursor() {
if ( current.getType()==Pointer.Type.TEXT ) {
// 'target.getCursor()' is also applied from elsewhere
// (at least now), but only when mouse "entered", and
// before 'XTextAreaPeer.handleJavaMouseEvent' is invoked.
outer.pSetCursor( outer.target.getCursor(), true );
}
else {
// We can write here a more intelligent cursor selection
// mechanism, like getting cursor from 'current' component.
// However, I see no point in doing so now. But if you feel
// like implementing it, you'll probably need to introduce
// 'Pointer.Type.PANEL'.
outer.pSetCursor( outer.textPane.getCursor(), true );
}
}
// Current way of grab-detection causes interesting (but harmless)
// side-effect. If mouse is draged from outside to inside of TextArea,
// we will then (in some cases) be asked to dispatch mouse-entered/exited
// events. But, as at least one mouse-button is down, we will detect
// grab-mode is on (though the grab isn't ours).
//
// Thus, we will not update 'current' (see 'handle' method), and will
// dispatch events to the last subcomponent, the 'current' was set to.
// As always, we set cursor in this case also. But, all this seems
// harmless, because mouse entered/exited events seem to have no effect
// here, and cursor setting is ignored in case of drags from outside.
//
// Grab-detection can be further improved, e.g. by taking into account
// current event-ID, but I see not point in doing it now.
private void grabbed_update( MouseEvent event ) {
final int allButtonsMask
= MouseEvent.BUTTON1_DOWN_MASK
| MouseEvent.BUTTON2_DOWN_MASK
| MouseEvent.BUTTON3_DOWN_MASK;
grabbed = ( (event.getModifiersEx() & allButtonsMask) != 0 );
}
// 'toLocalSpace' and 'toViewportChildLocalSpace' can be "optimized" to
// 'return' 'void' and use 'Point' input-argument also as output.
private static Point toLocalSpace( Component local, Point inParentSpace )
{
Point p = inParentSpace;
Point l = local.getLocation();
return new Point( p.x - l.x, p.y - l.y );
}
private static Point toViewportChildLocalSpace( JViewport v, Point inViewportParentSpace )
{
Point l = toLocalSpace(v, inViewportParentSpace);
Point p = v.getViewPosition();
l.x += p.x;
l.y += p.y;
return l;
}
private void setPointerToUnderPoint( Point point ) {
if ( outer.textPane.getViewport().getBounds().contains( point ) ) {
current.setText();
}
else if ( ! setPointerIfPointOverScrollbar(
outer.textPane.getVerticalScrollBar(), point ) )
{
if ( ! setPointerIfPointOverScrollbar(
outer.textPane.getHorizontalScrollBar(), point ) )
{
current.setNone();
}
}
}
private boolean setPointerIfPointOverScrollbar( JScrollBar bar, Point point ) {
if ( ! bar.getBounds().contains( point ) ) {
return false;
}
current.setBar( bar );
Point local = toLocalSpace( bar, point );
XTextAreaPeer.XAWTScrollBarUI ui =
(XTextAreaPeer.XAWTScrollBarUI) bar.getUI();
if ( ! setPointerIfPointOverButton( ui.getIncreaseButton(), local ) ) {
setPointerIfPointOverButton( ui.getDecreaseButton(), local );
}
return true;
}
private boolean setPointerIfPointOverButton( JButton button, Point point ) {
if ( ! button.getBounds().contains( point ) ) {
return false;
}
current.setButton( button );
return true;
}
private static final class Pointer {
static enum Type {
NONE, TEXT, BAR, BUTTON // , PANEL
}
Type getType() {
return type;
}
boolean isNone() {
return type==Type.NONE;
}
JScrollBar getBar() {
boolean ok = type==Type.BAR || type==Type.BUTTON;
assert ok;
return ok ? bar : null;
}
JButton getButton() {
boolean ok = type==Type.BUTTON;
assert ok;
return ok ? button : null;
}
void setNone() {
type = Type.NONE;
}
void setText() {
type = Type.TEXT;
}
void setBar( JScrollBar bar ) {
this.bar=bar;
type=Type.BAR;
}
void setButton( JButton button ) {
this.button=button;
type=Type.BUTTON;
}
private Type type;
private JScrollBar bar;
private JButton button;
}
}
}
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