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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
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*
* 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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* 2 along with this work; if not, write to the Free Software Foundation,
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*
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package javax.swing.plaf.synth;
import java.awt.*;
import java.awt.event.*;
import java.beans.*;
import java.util.*;
import javax.swing.*;
import javax.swing.plaf.*;
import javax.swing.plaf.basic.*;
/**
* Provides the Synth L&F UI delegate for
* {@link javax.swing.JSplitPane}.
*
* @author Scott Violet
* @since 1.7
*/
public class SynthSplitPaneUI extends BasicSplitPaneUI
implements PropertyChangeListener, SynthUI {
/**
* Keys to use for forward focus traversal when the JComponent is
* managing focus.
*/
private static Set<KeyStroke> managingFocusForwardTraversalKeys;
/**
* Keys to use for backward focus traversal when the JComponent is
* managing focus.
*/
private static Set<KeyStroke> managingFocusBackwardTraversalKeys;
/**
* Style for the JSplitPane.
*/
private SynthStyle style;
/**
* Style for the divider.
*/
private SynthStyle dividerStyle;
/**
* Creates a new SynthSplitPaneUI instance
*
* @param x component to create UI object for
* @return the UI object
*/
public static ComponentUI createUI(JComponent x) {
return new SynthSplitPaneUI();
}
/**
* Installs the UI defaults.
*/
@Override
protected void installDefaults() {
updateStyle(splitPane);
setOrientation(splitPane.getOrientation());
setContinuousLayout(splitPane.isContinuousLayout());
resetLayoutManager();
/* Install the nonContinuousLayoutDivider here to avoid having to
add/remove everything later. */
if(nonContinuousLayoutDivider == null) {
setNonContinuousLayoutDivider(
createDefaultNonContinuousLayoutDivider(),
true);
} else {
setNonContinuousLayoutDivider(nonContinuousLayoutDivider, true);
}
// focus forward traversal key
if (managingFocusForwardTraversalKeys==null) {
managingFocusForwardTraversalKeys = new HashSet<KeyStroke>();
managingFocusForwardTraversalKeys.add(
KeyStroke.getKeyStroke(KeyEvent.VK_TAB, 0));
}
splitPane.setFocusTraversalKeys(KeyboardFocusManager.FORWARD_TRAVERSAL_KEYS,
managingFocusForwardTraversalKeys);
// focus backward traversal key
if (managingFocusBackwardTraversalKeys==null) {
managingFocusBackwardTraversalKeys = new HashSet<KeyStroke>();
managingFocusBackwardTraversalKeys.add(
KeyStroke.getKeyStroke(KeyEvent.VK_TAB, InputEvent.SHIFT_MASK));
}
splitPane.setFocusTraversalKeys(KeyboardFocusManager.BACKWARD_TRAVERSAL_KEYS,
managingFocusBackwardTraversalKeys);
}
private void updateStyle(JSplitPane splitPane) {
SynthContext context = getContext(splitPane, Region.SPLIT_PANE_DIVIDER,
ENABLED);
SynthStyle oldDividerStyle = dividerStyle;
dividerStyle = SynthLookAndFeel.updateStyle(context, this);
context = getContext(splitPane, ENABLED);
SynthStyle oldStyle = style;
style = SynthLookAndFeel.updateStyle(context, this);
if (style != oldStyle) {
Object value = style.get(context, "SplitPane.size");
if (value == null) {
value = Integer.valueOf(6);
}
LookAndFeel.installProperty(splitPane, "dividerSize", value);
dividerSize = ((Number)value).intValue();
value = style.get(context, "SplitPane.oneTouchExpandable");
if (value != null) {
LookAndFeel.installProperty(splitPane, "oneTouchExpandable", value);
}
if (divider != null) {
splitPane.remove(divider);
divider.setDividerSize(splitPane.getDividerSize());
}
if (oldStyle != null) {
uninstallKeyboardActions();
installKeyboardActions();
}
}
if (style != oldStyle || dividerStyle != oldDividerStyle) {
// Only way to force BasicSplitPaneDivider to reread the
// necessary properties.
if (divider != null) {
splitPane.remove(divider);
}
divider = createDefaultDivider();
divider.setBasicSplitPaneUI(this);
splitPane.add(divider, JSplitPane.DIVIDER);
}
}
/**
* Installs the event listeners for the UI.
*/
@Override
protected void installListeners() {
super.installListeners();
splitPane.addPropertyChangeListener(this);
}
/**
* Uninstalls the UI defaults.
*/
@Override
protected void uninstallDefaults() {
SynthContext context = getContext(splitPane, ENABLED);
style.uninstallDefaults(context);
style = null;
context = getContext(splitPane, Region.SPLIT_PANE_DIVIDER, ENABLED);
dividerStyle.uninstallDefaults(context);
dividerStyle = null;
super.uninstallDefaults();
}
/**
* Uninstalls the event listeners from the UI.
*/
@Override
protected void uninstallListeners() {
super.uninstallListeners();
splitPane.removePropertyChangeListener(this);
}
/**
* {@inheritDoc}
*/
@Override
public SynthContext getContext(JComponent c) {
return getContext(c, SynthLookAndFeel.getComponentState(c));
}
private SynthContext getContext(JComponent c, int state) {
return SynthContext.getContext(c, style, state);
}
SynthContext getContext(JComponent c, Region region) {
return getContext(c, region, getComponentState(c, region));
}
private SynthContext getContext(JComponent c, Region region, int state) {
if (region == Region.SPLIT_PANE_DIVIDER) {
return SynthContext.getContext(c, region, dividerStyle, state);
}
return SynthContext.getContext(c, region, style, state);
}
private int getComponentState(JComponent c, Region subregion) {
int state = SynthLookAndFeel.getComponentState(c);
if (divider.isMouseOver()) {
state |= MOUSE_OVER;
}
return state;
}
/**
* {@inheritDoc}
*/
@Override
public void propertyChange(PropertyChangeEvent e) {
if (SynthLookAndFeel.shouldUpdateStyle(e)) {
updateStyle((JSplitPane)e.getSource());
}
}
/**
* Creates the default divider.
*/
@Override
public BasicSplitPaneDivider createDefaultDivider() {
SynthSplitPaneDivider divider = new SynthSplitPaneDivider(this);
divider.setDividerSize(splitPane.getDividerSize());
return divider;
}
/**
* {@inheritDoc}
*/
@Override
@SuppressWarnings("serial") // anonymous class
protected Component createDefaultNonContinuousLayoutDivider() {
return new Canvas() {
public void paint(Graphics g) {
paintDragDivider(g, 0, 0, getWidth(), getHeight());
}
};
}
/**
* Notifies this UI delegate to repaint the specified component.
* This method paints the component background, then calls
* the {@link #paint(SynthContext,Graphics)} method.
*
* <p>In general, this method does not need to be overridden by subclasses.
* All Look and Feel rendering code should reside in the {@code paint} method.
*
* @param g the {@code Graphics} object used for painting
* @param c the component being painted
* @see #paint(SynthContext,Graphics)
*/
@Override
public void update(Graphics g, JComponent c) {
SynthContext context = getContext(c);
SynthLookAndFeel.update(context, g);
context.getPainter().paintSplitPaneBackground(context,
g, 0, 0, c.getWidth(), c.getHeight());
paint(context, g);
}
/**
* Paints the specified component according to the Look and Feel.
* <p>This method is not used by Synth Look and Feel.
* Painting is handled by the {@link #paint(SynthContext,Graphics)} method.
*
* @param g the {@code Graphics} object used for painting
* @param c the component being painted
* @see #paint(SynthContext,Graphics)
*/
@Override
public void paint(Graphics g, JComponent c) {
SynthContext context = getContext(c);
paint(context, g);
}
/**
* Paints the specified component. This implementation does nothing.
*
* @param context context for the component being painted
* @param g the {@code Graphics} object used for painting
* @see #update(Graphics,JComponent)
*/
protected void paint(SynthContext context, Graphics g) {
// This is done to update package private variables in
// BasicSplitPaneUI
super.paint(g, splitPane);
}
/**
* {@inheritDoc}
*/
@Override
public void paintBorder(SynthContext context, Graphics g, int x,
int y, int w, int h) {
context.getPainter().paintSplitPaneBorder(context, g, x, y, w, h);
}
private void paintDragDivider(Graphics g, int x, int y, int w, int h) {
SynthContext context = getContext(splitPane,Region.SPLIT_PANE_DIVIDER);
context.setComponentState(((context.getComponentState() | MOUSE_OVER) ^
MOUSE_OVER) | PRESSED);
Shape oldClip = g.getClip();
g.clipRect(x, y, w, h);
context.getPainter().paintSplitPaneDragDivider(context, g, x, y, w, h,
splitPane.getOrientation());
g.setClip(oldClip);
}
/**
* {@inheritDoc}
*/
@Override
public void finishedPaintingChildren(JSplitPane jc, Graphics g) {
if(jc == splitPane && getLastDragLocation() != -1 &&
!isContinuousLayout() && !draggingHW) {
if(jc.getOrientation() == JSplitPane.HORIZONTAL_SPLIT) {
paintDragDivider(g, getLastDragLocation(), 0, dividerSize - 1,
splitPane.getHeight() - 1);
} else {
paintDragDivider(g, 0, getLastDragLocation(),
splitPane.getWidth() - 1, dividerSize - 1);
}
}
}
}