/*
* @(#)MetalToolBarUI.java 1.39 03/12/19
*
* Copyright 2004 Sun Microsystems, Inc. All rights reserved.
* SUN PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
*/
package javax.swing.plaf.metal;
import javax.swing.*;
import java.awt.Color;
import java.awt.Component;
import java.awt.Container;
import java.awt.Dimension;
import java.awt.Frame;
import java.awt.Graphics;
import java.awt.GraphicsEnvironment;
import java.awt.Insets;
import java.awt.Point;
import java.awt.Rectangle;
import java.awt.event.*;
import java.lang.ref.WeakReference;
import java.util.*;
import java.beans.PropertyChangeListener;
import javax.swing.event.*;
import javax.swing.border.*;
import javax.swing.plaf.*;
import javax.swing.plaf.basic.*;
/**
* A Metal Look and Feel implementation of ToolBarUI. This implementation
* is a "combined" view/controller.
* <p>
*
* @version 1.39 12/19/03
* @author Jeff Shapiro
*/
public class MetalToolBarUI extends BasicToolBarUI
{
/**
* An array of WeakReferences that point to JComponents. This will contain
* instances of JToolBars and JMenuBars and is used to find
* JToolBars/JMenuBars that border each other.
*/
private static java.util.List components = new ArrayList();
/**
* This protected field is implemenation specific. Do not access directly
* or override. Use the create method instead.
*
* @see #createContainerListener
*/
protected ContainerListener contListener;
/**
* This protected field is implemenation specific. Do not access directly
* or override. Use the create method instead.
*
* @see #createRolloverListener
*/
protected PropertyChangeListener rolloverListener;
private static Border nonRolloverBorder;
/**
* Registers the specified component.
*/
synchronized static void register(JComponent c) {
if (c == null) {
// Exception is thrown as convenience for callers that are
// typed to throw an NPE.
throw new NullPointerException("JComponent must be non-null");
}
components.add(new WeakReference(c));
}
/**
* Unregisters the specified component.
*/
synchronized static void unregister(JComponent c) {
for (int counter = components.size() - 1; counter >= 0; counter--) {
// Search for the component, removing any flushed references
// along the way.
WeakReference ref = (WeakReference)components.get(counter);
Object target = ((WeakReference)components.get(counter)).get();
if (target == c || target == null) {
components.remove(counter);
}
}
}
/**
* Finds a previously registered component of class <code>target</code>
* that shares the JRootPane ancestor of <code>from</code>.
*/
synchronized static Object findRegisteredComponentOfType(JComponent from,
Class target) {
JRootPane rp = SwingUtilities.getRootPane(from);
if (rp != null) {
for (int counter = components.size() - 1; counter >= 0; counter--){
Object component = ((WeakReference)components.get(counter)).
get();
if (component == null) {
// WeakReference has gone away, remove the WeakReference
components.remove(counter);
}
else if (target.isInstance(component) && SwingUtilities.
getRootPane((Component)component) == rp) {
return component;
}
}
}
return null;
}
/**
* Returns true if the passed in JMenuBar is above a horizontal
* JToolBar.
*/
static boolean doesMenuBarBorderToolBar(JMenuBar c) {
JToolBar tb = (JToolBar)MetalToolBarUI.
findRegisteredComponentOfType(c, JToolBar.class);
if (tb != null && tb.getOrientation() == JToolBar.HORIZONTAL) {
JRootPane rp = SwingUtilities.getRootPane(c);
Point point = new Point(0, 0);
point = SwingUtilities.convertPoint(c, point, rp);
int menuX = point.x;
int menuY = point.y;
point.x = point.y = 0;
point = SwingUtilities.convertPoint(tb, point, rp);
return (point.x == menuX && menuY + c.getHeight() == point.y &&
c.getWidth() == tb.getWidth());
}
return false;
}
public static ComponentUI createUI( JComponent c )
{
return new MetalToolBarUI();
}
public void installUI( JComponent c )
{
super.installUI( c );
register(c);
}
public void uninstallUI( JComponent c )
{
super.uninstallUI( c );
nonRolloverBorder = null;
unregister(c);
}
protected void installListeners() {
super.installListeners();
contListener = createContainerListener();
if (contListener != null) {
toolBar.addContainerListener(contListener);
}
rolloverListener = createRolloverListener();
if (rolloverListener != null) {
toolBar.addPropertyChangeListener(rolloverListener);
}
}
protected void uninstallListeners() {
super.uninstallListeners();
if (contListener != null) {
toolBar.removeContainerListener(contListener);
}
rolloverListener = createRolloverListener();
if (rolloverListener != null) {
toolBar.removePropertyChangeListener(rolloverListener);
}
}
protected Border createRolloverBorder() {
return super.createRolloverBorder();
}
protected Border createNonRolloverBorder() {
return super.createNonRolloverBorder();
}
/**
* Creates a non rollover border for Toggle buttons in the toolbar.
*/
private Border createNonRolloverToggleBorder() {
return createNonRolloverBorder();
}
protected void setBorderToNonRollover(Component c) {
if (c instanceof JToggleButton && !(c instanceof JCheckBox)) {
// 4735514, 4886944: The method createNonRolloverToggleBorder() is
// private in BasicToolBarUI so we can't override it. We still need
// to call super from this method so that it can save away the
// original border and then we install ours.
// Before calling super we get a handle to the old border, because
// super will install a non-UIResource border that we can't
// distinguish from one provided by an application.
JToggleButton b = (JToggleButton)c;
Border border = b.getBorder();
super.setBorderToNonRollover(c);
if (border instanceof UIResource) {
if (nonRolloverBorder == null) {
nonRolloverBorder = createNonRolloverToggleBorder();
}
b.setBorder(nonRolloverBorder);
}
} else {
super.setBorderToNonRollover(c);
}
}
/**
* Creates a container listener that will be added to the JToolBar.
* If this method returns null then it will not be added to the
* toolbar.
*
* @return an instance of a <code>ContainerListener</code> or null
*/
protected ContainerListener createContainerListener() {
return null;
}
/**
* Creates a property change listener that will be added to the JToolBar.
* If this method returns null then it will not be added to the
* toolbar.
*
* @return an instance of a <code>PropertyChangeListener</code> or null
*/
protected PropertyChangeListener createRolloverListener() {
return null;
}
protected MouseInputListener createDockingListener( )
{
return new MetalDockingListener( toolBar );
}
protected void setDragOffset(Point p) {
if (!GraphicsEnvironment.isHeadless()) {
if (dragWindow == null) {
dragWindow = createDragWindow(toolBar);
}
dragWindow.setOffset(p);
}
}
/**
* If necessary paints the background of the component, then invokes
* <code>paint</code>.
*
* @param g Graphics to paint to
* @param c JComponent painting on
* @throws NullPointerException if <code>g</code> or <code>c</code> is
* null
* @see javax.swing.plaf.ComponentUI#update
* @see javax.swing.plaf.ComponentUI#paint
* @since 1.5
*/
public void update(Graphics g, JComponent c) {
if (c.isOpaque() && (c.getBackground() instanceof UIResource) &&
((JToolBar)c).getOrientation() ==
JToolBar.HORIZONTAL && UIManager.get(
"MenuBar.gradient") != null) {
JRootPane rp = SwingUtilities.getRootPane(c);
JMenuBar mb = (JMenuBar)findRegisteredComponentOfType(
c, JMenuBar.class);
if (mb != null && mb.isOpaque() &&
(mb.getBackground() instanceof UIResource)) {
Point point = new Point(0, 0);
point = SwingUtilities.convertPoint(c, point, rp);
int x = point.x;
int y = point.y;
point.x = point.y = 0;
point = SwingUtilities.convertPoint(mb, point, rp);
if (point.x == x && y == point.y + mb.getHeight() &&
mb.getWidth() == c.getWidth() &&
MetalUtils.drawGradient(c, g, "MenuBar.gradient",
0, -mb.getHeight(), c.getWidth(), c.getHeight() +
mb.getHeight(), true)) {
paint(g, c);
return;
}
}
if (MetalUtils.drawGradient(c, g, "MenuBar.gradient",
0, 0, c.getWidth(), c.getHeight(), true)) {
paint(g, c);
return;
}
}
super.update(g, c);
}
// No longer used. Cannot remove for compatibility reasons
protected class MetalContainerListener
extends BasicToolBarUI.ToolBarContListener {}
// No longer used. Cannot remove for compatibility reasons
protected class MetalRolloverListener
extends BasicToolBarUI.PropertyListener {}
protected class MetalDockingListener extends DockingListener {
private boolean pressedInBumps = false;
public MetalDockingListener(JToolBar t) {
super(t);
}
public void mousePressed(MouseEvent e) {
super.mousePressed(e);
if (!toolBar.isEnabled()) {
return;
}
pressedInBumps = false;
Rectangle bumpRect = new Rectangle();
if (toolBar.getOrientation() == JToolBar.HORIZONTAL) {
int x = MetalUtils.isLeftToRight(toolBar) ? 0 : toolBar.getSize().width-14;
bumpRect.setBounds(x, 0, 14, toolBar.getSize().height);
} else { // vertical
bumpRect.setBounds(0, 0, toolBar.getSize().width, 14);
}
if (bumpRect.contains(e.getPoint())) {
pressedInBumps = true;
Point dragOffset = e.getPoint();
if (!MetalUtils.isLeftToRight(toolBar)) {
dragOffset.x -= (toolBar.getSize().width
- toolBar.getPreferredSize().width);
}
setDragOffset(dragOffset);
}
}
public void mouseDragged(MouseEvent e) {
if (pressedInBumps) {
super.mouseDragged(e);
}
}
} // end class MetalDockingListener
}
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