Examples of java.awt.peer.ComponentPeer

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.

        boolean focusable = aComponent.isFocusable();
        if (aComponent.isFocusTraversableOverridden()) {
            return focusable;
        }


        ComponentPeer peer = aComponent.getPeer();
        return (peer != null && peer.isFocusable());
    }

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        }


        synchronized (this) {
            source = newSource;
            if (comp != null) {
                ComponentPeer peer = comp.peer;
                if (peer != null) {
                    nativeSetSource(peer);
                }
            }
        }

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    boolean updateGraphicsData(GraphicsConfiguration gc) {
        checkTreeLock();


        graphicsConfig = gc;


        ComponentPeer peer = getPeer();
        if (peer != null) {
            return peer.updateGraphicsData(gc);
        }
        return false;
    }

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    /*
     * This is called by the native code, so client code can't
     * be called on the toolkit thread.
     */
    final Toolkit getToolkitImpl() {
        ComponentPeer peer = this.peer;
        if ((peer != null) && ! (peer instanceof LightweightPeer)){
            return peer.getToolkit();
        }
        Container parent = this.parent;
        if (parent != null) {
            return parent.getToolkitImpl();
        }

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    @Deprecated
    public void enable() {
        if (!enabled) {
            synchronized (getTreeLock()) {
                enabled = true;
                ComponentPeer peer = this.peer;
                if (peer != null) {
                    peer.setEnabled(true);
                    if (visible) {
                        updateCursorImmediately();
                    }
                }
            }

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                    // fails, we want the focus to stay on the disabled
                    // Component so that keyboard traversal, et. al. still
                    // makes sense to the user.
                    transferFocus(false);
                }
                ComponentPeer peer = this.peer;
                if (peer != null) {
                    peer.setEnabled(false);
                    if (visible) {
                        updateCursorImmediately();
                    }
                }
            }

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    public void show() {
        if (!visible) {
            synchronized (getTreeLock()) {
                visible = true;
                mixOnShowing();
                ComponentPeer peer = this.peer;
                if (peer != null) {
                    peer.setVisible(true);
                    createHierarchyEvents(HierarchyEvent.HIERARCHY_CHANGED,
                                          this, parent,
                                          HierarchyEvent.SHOWING_CHANGED,
                                          Toolkit.enabledOnToolkit(AWTEvent.HIERARCHY_EVENT_MASK));
                    if (peer instanceof LightweightPeer) {

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                visible = false;
                mixOnHiding(isLightweight());
                if (containsFocus() && KeyboardFocusManager.isAutoFocusTransferEnabled()) {
                    transferFocus(true);
                }
                ComponentPeer peer = this.peer;
                if (peer != null) {
                    peer.setVisible(false);
                    createHierarchyEvents(HierarchyEvent.HIERARCHY_CHANGED,
                                          this, parent,
                                          HierarchyEvent.SHOWING_CHANGED,
                                          Toolkit.enabledOnToolkit(AWTEvent.HIERARCHY_EVENT_MASK));
                    if (peer instanceof LightweightPeer) {

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     * @see #getForeground
     * @since JDK1.0
     */
    public void setForeground(Color c) {
        Color oldColor = foreground;
        ComponentPeer peer = this.peer;
        foreground = c;
        if (peer != null) {
            c = getForeground();
            if (c != null) {
                peer.setForeground(c);
            }
        }
        // This is a bound property, so report the change to
        // any registered listeners.  (Cheap if there are none.)
        firePropertyChange("foreground", oldColor, c);

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     * @beaninfo
     *       bound: true
     */
    public void setBackground(Color c) {
        Color oldColor = background;
        ComponentPeer peer = this.peer;
        background = c;
        if (peer != null) {
            c = getBackground();
            if (c != null) {
                peer.setBackground(c);
            }
        }
        // This is a bound property, so report the change to
        // any registered listeners.  (Cheap if there are none.)
        firePropertyChange("background", oldColor, c);

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