Examples of ae.java.awt.peer.ComponentPeer

ae.java.awt.peer.ComponentPeer
The peer interfaces are intended only for use in porting the AWT. They are not intended for use by application developers, and developers should not implement peers nor invoke any of the peer methods directly on the peer instances.

         * Except KeyEvents, they will be processed by peer after
         * all KeyEventPostProcessors
         * (see DefaultKeyboardFocusManager.dispatchKeyEvent())
         */
        if (!(e instanceof KeyEvent)) {
            ComponentPeer tpeer = peer;
            if (e instanceof FocusEvent && (tpeer == null || tpeer instanceof LightweightPeer)) {
                // if focus owner is lightweight then its native container
                // processes event
                Component source = (Component)e.getSource();
                if (source != null) {
                    Container target = source.getNativeContainer();
                    if (target != null) {
                        tpeer = target.getPeer();
                    }
                }
            }
            if (tpeer != null) {
                tpeer.handleEvent(e);
            }
        }
    } // dispatchEventImpl()

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     * @deprecated As of JDK version 1.1,
     * replaced by dispatchEvent(AWTEvent).
     */
    @Deprecated
    public boolean postEvent(Event e) {
        ComponentPeer peer = this.peer;


        if (handleEvent(e)) {
            e.consume();
            return true;
        }

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     * @see       #removeNotify
     * @since JDK1.0
     */
    public void addNotify() {
        synchronized (getTreeLock()) {
            ComponentPeer peer = this.peer;
            if (peer == null || peer instanceof LightweightPeer){
                if (peer == null) {
                    // Update both the Component's peer variable and the local
                    // variable we use for thread safety.
                    this.peer = peer = getToolkit().createComponent(this);

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//                if (inputContext != null) {
//                    inputContext.removeNotify(this);
//                }
//            }


            ComponentPeer p = peer;
            if (p != null) {
                boolean isLightweight = isLightweight();


                if (bufferStrategy instanceof FlipBufferStrategy) {
                    ((FlipBufferStrategy)bufferStrategy).destroyBuffers();
                }


                if (dropTarget != null) dropTarget.removeNotify(peer);


                // Hide peer first to stop system events such as cursor moves.
                if (visible) {
                    p.hide();
                }


                peer = null; // Stop peer updates.
                peerFont = null;


                Toolkit.getEventQueue().removeSourceEvents(this, false);
                KeyboardFocusManager.getCurrentKeyboardFocusManager().
                    discardKeyEvents(this);


                p.dispose();


                mixOnHiding(isLightweight);
                removePropertyChangeListener("opaque", opaquePropertyChangeListener);


                isAddNotifyComplete = false;

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                return false;
            }
            window = window.parent;
        }


        ComponentPeer peer = this.peer;
        Component heavyweight = (peer instanceof LightweightPeer)
            ? getNativeContainer() : this;
        if (heavyweight == null || !heavyweight.isVisible()) {
            if (focusLog.isLoggable(Level.FINEST)) {
                focusLog.log(Level.FINEST, "Component is not a part of visible hierarchy");
            }
            return false;
        }
        peer = heavyweight.peer;
        if (peer == null) {
            if (focusLog.isLoggable(Level.FINEST)) {
                focusLog.log(Level.FINEST, "Peer is null");
            }
            return false;
        }


        // Focus this Component
        long time = EventQueue.getMostRecentEventTime();
        boolean success = peer.requestFocus
            (this, temporary, focusedWindowChangeAllowed, time, cause);
        if (!success) {
            KeyboardFocusManager.getCurrentKeyboardFocusManager
                (appContext).dequeueKeyEvents(time, this);
            if (focusLog.isLoggable(Level.FINEST)) {

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                focusLog.log(Level.FINEST, "Not focusable or not visible");
            }
            return false;
        }


        ComponentPeer peer = this.peer;
        if (peer == null) {
            if (focusLog.isLoggable(Level.FINEST)) {
                focusLog.log(Level.FINEST, "peer is null");
            }
            return false;

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     * @param shape Shape to be applied to the component
     */
    void applyCompoundShape(Region shape) {
        checkTreeLock();
        if (!isLightweight()) {
            ComponentPeer peer = getPeer();
            if (peer != null) {
                // The Region class has some optimizations. That's why
                // we should manually check whether it's empty and
                // substitute the object ourselves. Otherwise we end up
                // with some incorrect Region object with loX being
                // greater than the hiX for instance.
                if (shape.isEmpty()) {
                    shape = Region.getInstanceXYWH(0, 0, 0, 0);
                }


                // Note: the shape is not really copied/cloned. We create
                // the Region object ourselves, so there's no any possibility
                // to modify the object outside of the mixing code.
                this.compoundShape = shape;


                if (areBoundsValid()) {
                    Point compAbsolute = getLocationOnWindow();


                    if (mixingLog.isLoggable(Level.FINER)) {
                        mixingLog.fine("this = " + this +
                            "; compAbsolute=" + compAbsolute + "; shape=" + shape);
                    }


                    peer.applyShape(shape.getTranslatedRegion(-compAbsolute.x, -compAbsolute.y));
                }
            }
        }
    }

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    public synchronized void setComponent(Component c) {
        if (component == c || component != null && component.equals(c))
            return;


        Component     old;
        ComponentPeer oldPeer = null;


        if ((old = component) != null) {
            clearAutoscroll();


            component = null;

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            }
        }
    }


    private boolean coalescePaintEvent(PaintEvent e) {
        ComponentPeer sourcePeer = ((Component)e.getSource()).peer;
        if (sourcePeer != null) {
            sourcePeer.coalescePaintEvent(e);
        }
        EventQueueItem[] cache = ((Component)e.getSource()).eventCache;
        if (cache == null) {
            return false;
        }

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     * @deprecated As of JDK version 1.1,
     * replaced by <code>getInsets()</code>.
     */
    @Deprecated
    public Insets insets() {
        ComponentPeer peer = this.peer;
        if (peer instanceof ContainerPeer) {
            ContainerPeer cpeer = (ContainerPeer)peer;
            return (Insets)cpeer.insets().clone();
        }
        return new Insets(0, 0, 0, 0);

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Related Classes of ae.java.awt.peer.ComponentPeer

ae.java.awt.AWTEvent

ae.java.awt.Component

ae.java.awt.Container

ae.java.awt.DefaultFocusTraversalPolicy

ae.java.awt.DefaultKeyboardFocusManager

ae.java.awt.dnd.DropTarget

ae.java.awt.EventQueue

ae.sun.awt.ComponentAccessor

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