Java AppContext.isDisposed方法代码示例

import sun.awt.AppContext; //导入方法依赖的package包/类
private synchronized void initContext() {
    final AppContext context = AppContext.getAppContext();

    if (contentsContext != context) {
        // Need to synchronize on the AppContext to guarantee that it cannot
        // be disposed after the check, but before the listener is added.
        synchronized (context) {
            if (context.isDisposed()) {
                throw new IllegalStateException("Can't set contents from disposed AppContext");
            }
            context.addPropertyChangeListener
                (AppContext.DISPOSED_PROPERTY_NAME, this);
        }
        if (contentsContext != null) {
            contentsContext.removePropertyChangeListener
                (AppContext.DISPOSED_PROPERTY_NAME, this);
        }
        contentsContext = context;
    }
}
 

import sun.awt.AppContext; //导入方法依赖的package包/类
private void scheduleDisplayChanges() {
    // To avoid threading problems, we notify each RepaintManager
    // on the thread it was created on.
    for (Object c : AppContext.getAppContexts()) {
        AppContext context = (AppContext) c;
        synchronized(context) {
            if (!context.isDisposed()) {
                EventQueue eventQueue = (EventQueue)context.get(
                    AppContext.EVENT_QUEUE_KEY);
                if (eventQueue != null) {
                    eventQueue.postEvent(new InvocationEvent(
                        Toolkit.getDefaultToolkit(),
                        new DisplayChangedRunnable()));
                }
            }
        }
    }
}
 

import sun.awt.AppContext; //导入方法依赖的package包/类
private static void scheduleDisplayChanges() {
    // To avoid threading problems, we notify each RepaintManager
    // on the thread it was created on.
    for (AppContext context : AppContext.getAppContexts()) {
        synchronized(context) {
            if (!context.isDisposed()) {
                EventQueue eventQueue = (EventQueue)context.get(
                    AppContext.EVENT_QUEUE_KEY);
                if (eventQueue != null) {
                    eventQueue.postEvent(new InvocationEvent(
                        Toolkit.getDefaultToolkit(),
                        new DisplayChangedRunnable()));
                }
            }
        }
    }
}
 

import sun.awt.AppContext; //导入方法依赖的package包/类
@Override
public void firePropertyChange(final PropertyChangeEvent evt) {
    Object oldValue = evt.getOldValue();
    Object newValue = evt.getNewValue();
    String propertyName = evt.getPropertyName();
    if (oldValue != null && newValue != null && oldValue.equals(newValue)) {
        return;
    }
    Runnable updater = new Runnable() {
        public void run() {
            PropertyChangeSupport pcs = (PropertyChangeSupport)
                    AppContext.getAppContext().get(PROP_CHANGE_SUPPORT_KEY);
            if (null != pcs) {
                pcs.firePropertyChange(evt);
            }
        }
    };
    final AppContext currentAppContext = AppContext.getAppContext();
    for (AppContext appContext : AppContext.getAppContexts()) {
        if (null == appContext || appContext.isDisposed()) {
            continue;
        }
        if (currentAppContext == appContext) {
            updater.run();
        } else {
            final PeerEvent e = new PeerEvent(source, updater, PeerEvent.ULTIMATE_PRIORITY_EVENT);
            SunToolkit.postEvent(appContext, e);
        }
    }
}
 

import sun.awt.AppContext; //导入方法依赖的package包/类
/**
 * Sends a synthetic AWTEvent to a Component. If the Component is in
 * the current AppContext, then the event is immediately dispatched.
 * If the Component is in a different AppContext, then the event is
 * posted to the other AppContext's EventQueue, and this method blocks
 * until the event is handled or target AppContext is disposed.
 * Returns true if successfuly dispatched event, false if failed
 * to dispatch.
 */
static boolean sendMessage(Component target, AWTEvent e) {
    e.isPosted = true;
    AppContext myAppContext = AppContext.getAppContext();
    final AppContext targetAppContext = target.appContext;
    final SentEvent se =
        new DefaultKeyboardFocusManagerSentEvent(e, myAppContext);

    if (myAppContext == targetAppContext) {
        se.dispatch();
    } else {
        if (targetAppContext.isDisposed()) {
            return false;
        }
        SunToolkit.postEvent(targetAppContext, se);
        if (EventQueue.isDispatchThread()) {
            EventDispatchThread edt = (EventDispatchThread)
                Thread.currentThread();
            edt.pumpEvents(SentEvent.ID, new Conditional() {
                    public boolean evaluate() {
                        return !se.dispatched && !targetAppContext.isDisposed();
                    }
                });
        } else {
            synchronized (se) {
                while (!se.dispatched && !targetAppContext.isDisposed()) {
                    try {
                        se.wait(1000);
                    } catch (InterruptedException ie) {
                        break;
                    }
                }
            }
        }
    }
    return se.dispatched;
}
 

import sun.awt.AppContext; //导入方法依赖的package包/类
/**
 * Sends a synthetic AWTEvent to a Component. If the Component is in
 * the current AppContext, then the event is immediately dispatched.
 * If the Component is in a different AppContext, then the event is
 * posted to the other AppContext's EventQueue, and this method blocks
 * until the event is handled or target AppContext is disposed.
 * Returns true if successfully dispatched event, false if failed
 * to dispatch.
 */
static boolean sendMessage(Component target, AWTEvent e) {
    e.isPosted = true;
    AppContext myAppContext = AppContext.getAppContext();
    final AppContext targetAppContext = target.appContext;
    final SentEvent se =
        new DefaultKeyboardFocusManagerSentEvent(e, myAppContext);

    if (myAppContext == targetAppContext) {
        se.dispatch();
    } else {
        if (targetAppContext.isDisposed()) {
            return false;
        }
        SunToolkit.postEvent(targetAppContext, se);
        if (EventQueue.isDispatchThread()) {
            EventDispatchThread edt = (EventDispatchThread)
                Thread.currentThread();
            edt.pumpEvents(SentEvent.ID, new Conditional() {
                    public boolean evaluate() {
                        return !se.dispatched && !targetAppContext.isDisposed();
                    }
                });
        } else {
            synchronized (se) {
                while (!se.dispatched && !targetAppContext.isDisposed()) {
                    try {
                        se.wait(1000);
                    } catch (InterruptedException ie) {
                        break;
                    }
                }
            }
        }
    }
    return se.dispatched;
}
 

import sun.awt.AppContext; //导入方法依赖的package包/类
/**
 * Checks change of the {@code DataFlavor}s and, if necessary,
 * posts notifications on {@code FlavorEvent}s to the
 * AppContexts' EDTs.
 * The parameter {@code formats} is null iff we have just
 * failed to get formats available on the clipboard.
 *
 * @param formats data formats that have just been retrieved from
 *        this clipboard
 */
protected final void checkChange(final long[] formats) {
    if (Arrays.equals(formats, currentFormats)) {
        // we've been able to successfully get available on the clipboard
        // DataFlavors this and previous time and they are coincident;
        // don't notify
        return;
    }
    currentFormats = formats;

    for (final AppContext appContext : AppContext.getAppContexts()) {
        if (appContext == null || appContext.isDisposed()) {
            continue;
        }
        Set<FlavorListener> flavorListeners = getFlavorListeners(appContext);
        if (flavorListeners != null) {
            for (FlavorListener listener : flavorListeners) {
                if (listener != null) {
                    PeerEvent peerEvent = new PeerEvent(this,
                            () -> listener.flavorsChanged(new FlavorEvent(SunClipboard.this)),
                            PeerEvent.PRIORITY_EVENT);
                    SunToolkit.postEvent(appContext, peerEvent);
                }
            }
        }
    }
}