/*
* Copyright (c) 2011, 2018, Oracle and/or its affiliates. All rights reserved.
* 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
* or visit www.oracle.com if you need additional information or have any
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*/
package com.apple.laf;
import java.awt.*;
import java.awt.event.*;
import java.util.Hashtable;
import javax.swing.*;
import sun.awt.AWTAccessor;
import sun.awt.SunToolkit;
import sun.lwawt.LWToolkit;
import sun.lwawt.macosx.*;
@SuppressWarnings("serial") // JDK implementation class
final class ScreenMenu extends Menu
implements ContainerListener, ComponentListener,
ScreenMenuPropertyHandler {
static {
java.security.AccessController.doPrivileged(
new java.security.PrivilegedAction<Void>() {
public Void run() {
System.loadLibrary("awt");
return null;
}
});
}
// screen menu stuff
private static native long addMenuListeners(ScreenMenu listener, long nativeMenu);
private static native void removeMenuListeners(long modelPtr);
private transient long fModelPtr;
private final Hashtable<Component, MenuItem> fItems;
private final JMenu fInvoker;
private Component fLastMouseEventTarget;
private Rectangle fLastTargetRect;
private volatile Rectangle[] fItemBounds;
private ScreenMenuPropertyListener fPropertyListener;
// Array of child hashes used to see if we need to recreate the Menu.
private int[] childHashArray;
ScreenMenu(final JMenu invoker) {
super(invoker.getText());
fInvoker = invoker;
int count = fInvoker.getMenuComponentCount();
if (count < 5) count = 5;
fItems = new Hashtable<Component, MenuItem>(count);
setEnabled(fInvoker.isEnabled());
updateItems();
}
/**
* Determine if we need to tear down the Menu and re-create it, since the contents may have changed in the Menu opened listener and
* we do not get notified of it, because EDT is busy in our code. We only need to update if the menu contents have changed in some
* way, such as the number of menu items, the text of the menuitems, icon, shortcut etc.
*/
private static boolean needsUpdate(final Component[] items, final int[] childHashArray) {
if (items == null || childHashArray == null) {
return true;
}
if (childHashArray.length != items.length) {
return true;
}
for (int i = 0; i < items.length; i++) {
final int hashCode = getHashCode(items[i]);
if (hashCode != childHashArray[i]) {
return true;
}
}
return false;
}
/**
* Used to recreate the AWT based Menu structure that implements the Screen Menu.
* Also computes hashcode and stores them so that we can compare them later in needsUpdate.
*/
private void updateItems() {
final int count = fInvoker.getMenuComponentCount();
final Component[] items = fInvoker.getMenuComponents();
if (needsUpdate(items, childHashArray)) {
removeAll();
fItems.clear();
if (count <= 0) return;
childHashArray = new int[count];
for (int i = 0; i < count; i++) {
addItem(items[i]);
childHashArray[i] = getHashCode(items[i]);
}
}
}
/**
* Callback from JavaMenuUpdater.m -- called when menu first opens
*/
public void invokeOpenLater() {
final JMenu invoker = fInvoker;
if (invoker == null) {
System.err.println("invoker is null!");
return;
}
try {
LWCToolkit.invokeAndWait(new Runnable() {
public void run() {
invoker.setSelected(true);
invoker.validate();
updateItems();
fItemBounds = new Rectangle[invoker.getMenuComponentCount()];
}
}, invoker);
} catch (final Exception e) {
System.err.println(e);
e.printStackTrace();
}
}
/**
* Callback from JavaMenuUpdater.m -- called when menu closes.
*/
public void invokeMenuClosing() {
final JMenu invoker = fInvoker;
if (invoker == null) return;
try {
LWCToolkit.invokeAndWait(new Runnable() {
public void run() {
invoker.setSelected(false);
// Null out the tracking rectangles and the array.
if (fItemBounds != null) {
for (int i = 0; i < fItemBounds.length; i++) {
fItemBounds[i] = null;
}
}
fItemBounds = null;
}
}, invoker);
} catch (final Exception e) {
e.printStackTrace();
}
}
/**
* Callback from JavaMenuUpdater.m -- called when menu item is hilighted.
*
* @param inWhichItem The menu item selected by the user. -1 if mouse moves off the menu.
* @param itemRectTop
* @param itemRectLeft
* @param itemRectBottom
* @param itemRectRight Tracking rectangle coordinates.
*/
public void handleItemTargeted(final int inWhichItem, final int itemRectTop, final int itemRectLeft, final int itemRectBottom, final int itemRectRight) {
if (fItemBounds == null || inWhichItem < 0 || inWhichItem > (fItemBounds.length - 1)) return;
final Rectangle itemRect = new Rectangle(itemRectLeft, itemRectTop, itemRectRight - itemRectLeft, itemRectBottom - itemRectTop);
fItemBounds[inWhichItem] = itemRect;
}
/**
* Callback from JavaMenuUpdater.m -- called when mouse event happens on the menu.
*/
public void handleMouseEvent(final int kind, final int x, final int y, final int modifiers, final long when) {
if (kind == 0) return;
if (fItemBounds == null) return;
SunToolkit.executeOnEventHandlerThread(fInvoker, new Runnable() {
@Override
public void run() {
Component target = null;
Rectangle targetRect = null;
for (int i = 0; i < fItemBounds.length; i++) {
final Rectangle testRect = fItemBounds[i];
if (testRect != null) {
if (testRect.contains(x, y)) {
target = fInvoker.getMenuComponent(i);
targetRect = testRect;
break;
}
}
}
if (target == null && fLastMouseEventTarget == null) return;
// Send a mouseExited to the previously hilited item, if it wasn't 0.
if (target != fLastMouseEventTarget) {
if (fLastMouseEventTarget != null) {
LWToolkit.postEvent(
new MouseEvent(fLastMouseEventTarget,
MouseEvent.MOUSE_EXITED, when,
modifiers, x - fLastTargetRect.x,
y - fLastTargetRect.y, 0,
false));
}
// Send a mouseEntered to the current hilited item, if it
// wasn't 0.
if (target != null) {
LWToolkit.postEvent(
new MouseEvent(target, MouseEvent.MOUSE_ENTERED,
when, modifiers,
x - targetRect.x,
y - targetRect.y, 0, false));
}
fLastMouseEventTarget = target;
fLastTargetRect = targetRect;
}
// Post a mouse event to the current item.
if (target == null) return;
LWToolkit.postEvent(
new MouseEvent(target, kind, when, modifiers,
x - targetRect.x, y - targetRect.y, 0,
false));
}
});
}
@Override
public void addNotify() {
synchronized (getTreeLock()) {
super.addNotify();
if (fModelPtr == 0) {
fInvoker.getPopupMenu().addContainerListener(this);
fInvoker.addComponentListener(this);
fPropertyListener = new ScreenMenuPropertyListener(this);
fInvoker.addPropertyChangeListener(fPropertyListener);
final Icon icon = fInvoker.getIcon();
if (icon != null) {
setIcon(icon);
}
final String tooltipText = fInvoker.getToolTipText();
if (tooltipText != null) {
setToolTipText(tooltipText);
}
final Object peer = AWTAccessor.getMenuComponentAccessor()
.getPeer(this);
if (peer instanceof CMenu) {
final CMenu menu = (CMenu) peer;
final long nativeMenu = menu.getNativeMenu();
fModelPtr = addMenuListeners(this, nativeMenu);
}
}
}
}
@Override
public void removeNotify() {
synchronized (getTreeLock()) {
// Call super so that the NSMenu has been removed, before we release
// the delegate in removeMenuListeners
super.removeNotify();
fItems.clear();
if (fModelPtr != 0) {
removeMenuListeners(fModelPtr);
fModelPtr = 0;
fInvoker.getPopupMenu().removeContainerListener(this);
fInvoker.removeComponentListener(this);
fInvoker.removePropertyChangeListener(fPropertyListener);
}
}
}
/**
* Invoked when a component has been added to the container.
*/
@Override
public void componentAdded(final ContainerEvent e) {
addItem(e.getChild());
}
/**
* Invoked when a component has been removed from the container.
*/
@Override
public void componentRemoved(final ContainerEvent e) {
final Component child = e.getChild();
final MenuItem sm = fItems.remove(child);
if (sm == null) return;
remove(sm);
}
/**
* Invoked when the component's size changes.
*/
@Override
public void componentResized(final ComponentEvent e) {}
/**
* Invoked when the component's position changes.
*/
@Override
public void componentMoved(final ComponentEvent e) {}
/**
* Invoked when the component has been made visible.
* See componentHidden - we should still have a MenuItem
* it just isn't inserted
*/
@Override
public void componentShown(final ComponentEvent e) {
setVisible(true);
}
/**
* Invoked when the component has been made invisible.
* MenuComponent.setVisible does nothing,
* so we remove the ScreenMenuItem from the ScreenMenu
* but leave it in fItems
*/
@Override
public void componentHidden(final ComponentEvent e) {
setVisible(false);
}
private void setVisible(final boolean b) {
// Tell our parent to add/remove us
final MenuContainer parent = getParent();
if (parent != null) {
if (parent instanceof ScreenMenu) {
final ScreenMenu sm = (ScreenMenu)parent;
sm.setChildVisible(fInvoker, b);
}
}
}
@Override
public void setChildVisible(final JMenuItem child, final boolean b) {
fItems.remove(child);
updateItems();
}
@Override
public void setAccelerator(final KeyStroke ks) {}
// only check and radio items can be indeterminate
@Override
public void setIndeterminate(boolean indeterminate) { }
@Override
public void setToolTipText(final String text) {
Object peer = AWTAccessor.getMenuComponentAccessor().getPeer(this);
if (!(peer instanceof CMenuItem)) return;
final CMenuItem cmi = (CMenuItem)peer;
cmi.setToolTipText(text);
}
@Override
public void setIcon(final Icon i) {
Object peer = AWTAccessor.getMenuComponentAccessor().getPeer(this);
if (!(peer instanceof CMenuItem)) return;
final CMenuItem cmi = (CMenuItem)peer;
Image img = null;
if (i != null) {
if (i.getIconWidth() > 0 && i.getIconHeight() > 0) {
img = AquaIcon.getImageForIcon(i);
}
}
cmi.setImage(img);
}
/**
* Gets a hashCode for a JMenu or JMenuItem or subclass so that we can compare for
* changes in the Menu.
*/
private static int getHashCode(final Component m) {
int hashCode = m.hashCode();
if (m instanceof JMenuItem) {
final JMenuItem mi = (JMenuItem) m;
final String text = mi.getText();
if (text != null) hashCode ^= text.hashCode();
final Icon icon = mi.getIcon();
if (icon != null) hashCode ^= icon.hashCode();
final Icon disabledIcon = mi.getDisabledIcon();
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