/*
* Copyright (c) 2002, 2010, 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
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*/
package com.sun.java.swing;
import sun.awt.EventQueueDelegate;
import sun.awt.AppContext;
import java.util.Collections;
import java.util.Map;
import java.util.WeakHashMap;
import java.util.concurrent.Callable;
import java.applet.Applet;
import java.awt.AWTEvent;
import java.awt.EventQueue;
import java.awt.Component;
import java.awt.Container;
import java.awt.Window;
import javax.swing.JComponent;
import javax.swing.RepaintManager;
/**
* A collection of utility methods for Swing.
* <p>
* <b>WARNING:</b> While this class is public, it should not be treated as
* public API and its API may change in incompatable ways between dot dot
* releases and even patch releases. You should not rely on this class even
* existing.
*
* This is a second part of sun.swing.SwingUtilities2. It is required
* to provide services for JavaFX applets.
*
*/
public class SwingUtilities3 {
/**
* The {@code clientProperty} key for delegate {@code RepaintManager}
*/
private static final Object DELEGATE_REPAINT_MANAGER_KEY =
new StringBuilder("DelegateRepaintManagerKey");
/**
* Registers delegate RepaintManager for {@code JComponent}.
*/
public static void setDelegateRepaintManager(JComponent component,
RepaintManager repaintManager) {
/* setting up flag in AppContext to speed up lookups in case
* there are no delegate RepaintManagers used.
*/
AppContext.getAppContext().put(DELEGATE_REPAINT_MANAGER_KEY,
Boolean.TRUE);
component.putClientProperty(DELEGATE_REPAINT_MANAGER_KEY,
repaintManager);
}
private static final Map<Container, Boolean> vsyncedMap =
Collections.synchronizedMap(new WeakHashMap<Container, Boolean>());
/**
* Sets vsyncRequested state for the {@code rootContainer}. If
* {@code isRequested} is {@code true} then vsynced
* {@code BufferStrategy} is enabled for this {@code rootContainer}.
*
* Note: requesting vsynced painting does not guarantee one. The outcome
* depends on current RepaintManager's RepaintManager.PaintManager
* and on the capabilities of the graphics hardware/software and what not.
*
* @param rootContainer topmost container. Should be either {@code Window}
* or {@code Applet}
* @param isRequested the value to set vsyncRequested state to
*/
public static void setVsyncRequested(Container rootContainer,
boolean isRequested) {
assert (rootContainer instanceof Applet) || (rootContainer instanceof Window);
if (isRequested) {
vsyncedMap.put(rootContainer, Boolean.TRUE);
} else {
vsyncedMap.remove(rootContainer);
}
}
/**
* Checks if vsync painting is requested for {@code rootContainer}
*
* @param rootContainer topmost container. Should be either Window or Applet
* @return {@code true} if vsync painting is requested for {@code rootContainer}
*/
public static boolean isVsyncRequested(Container rootContainer) {
assert (rootContainer instanceof Applet) || (rootContainer instanceof Window);
return Boolean.TRUE == vsyncedMap.get(rootContainer);
}
/**
* Returns delegate {@code RepaintManager} for {@code component} hierarchy.
*/
public static RepaintManager getDelegateRepaintManager(Component
component) {
RepaintManager delegate = null;
if (Boolean.TRUE == AppContext.getAppContext().get(
DELEGATE_REPAINT_MANAGER_KEY)) {
while (delegate == null && component != null) {
while (component != null
&& ! (component instanceof JComponent)) {
component = component.getParent();
}
if (component != null) {
delegate = (RepaintManager)
((JComponent) component)
.getClientProperty(DELEGATE_REPAINT_MANAGER_KEY);
component = component.getParent();
}
}
}
return delegate;
}
/*
* We use maps to avoid reflection. Hopefully it should perform better
* this way.
*/
public static void setEventQueueDelegate(
Map<String, Map<String, Object>> map) {
EventQueueDelegate.setDelegate(new EventQueueDelegateFromMap(map));
}
private static class EventQueueDelegateFromMap
implements EventQueueDelegate.Delegate {
private final AWTEvent[] afterDispatchEventArgument;
private final Object[] afterDispatchHandleArgument;
private final Callable<Void> afterDispatchCallable;
private final AWTEvent[] beforeDispatchEventArgument;
private final Callable<Object> beforeDispatchCallable;
private final EventQueue[] getNextEventEventQueueArgument;
private final Callable<AWTEvent> getNextEventCallable;
@SuppressWarnings("unchecked")
public EventQueueDelegateFromMap(Map<String, Map<String, Object>> objectMap) {
Map<String, Object> methodMap = objectMap.get("afterDispatch");
afterDispatchEventArgument = (AWTEvent[]) methodMap.get("event");
afterDispatchHandleArgument = (Object[]) methodMap.get("handle");
afterDispatchCallable = (Callable<Void>) methodMap.get("method");
methodMap = objectMap.get("beforeDispatch");
beforeDispatchEventArgument = (AWTEvent[]) methodMap.get("event");
beforeDispatchCallable = (Callable<Object>) methodMap.get("method");
methodMap = objectMap.get("getNextEvent");
getNextEventEventQueueArgument =
(EventQueue[]) methodMap.get("eventQueue");
getNextEventCallable = (Callable<AWTEvent>) methodMap.get("method");
}
@Override
public void afterDispatch(AWTEvent event, Object handle) throws InterruptedException {
afterDispatchEventArgument[0] = event;
afterDispatchHandleArgument[0] = handle;
try {
afterDispatchCallable.call();
} catch (InterruptedException e) {
throw e;
} catch (RuntimeException e) {
throw e;
} catch (Exception e) {
throw new RuntimeException(e);
}
}
@Override
public Object beforeDispatch(AWTEvent event) throws InterruptedException {
beforeDispatchEventArgument[0] = event;
try {
return beforeDispatchCallable.call();
} catch (InterruptedException e) {
throw e;
} catch (RuntimeException e) {
throw e;
} catch (Exception e) {
throw new RuntimeException(e);
}
}
@Override
public AWTEvent getNextEvent(EventQueue eventQueue) throws InterruptedException {
getNextEventEventQueueArgument[0] = eventQueue;
try {
return getNextEventCallable.call();
} catch (InterruptedException e) {
throw e;
} catch (RuntimeException e) {
throw e;
} catch (Exception e) {
throw new RuntimeException(e);
}
}
}
}