* @see #invalidate
* @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);
}
// This is a lightweight component which means it won't be
// able to get window-related events by itself. If any
// have been enabled, then the nearest native container must
// be enabled.
if (parent != null) {
long mask = 0;
if ((mouseListener != null) || ((eventMask & AWTEvent.MOUSE_EVENT_MASK) != 0)) {
mask |= AWTEvent.MOUSE_EVENT_MASK;
}
if ((mouseMotionListener != null) ||
((eventMask & AWTEvent.MOUSE_MOTION_EVENT_MASK) != 0)) {
mask |= AWTEvent.MOUSE_MOTION_EVENT_MASK;
}
if ((mouseWheelListener != null ) ||
((eventMask & AWTEvent.MOUSE_WHEEL_EVENT_MASK) != 0)) {
mask |= AWTEvent.MOUSE_WHEEL_EVENT_MASK;
}
if (focusListener != null || (eventMask & AWTEvent.FOCUS_EVENT_MASK) != 0) {
mask |= AWTEvent.FOCUS_EVENT_MASK;
}
if (keyListener != null || (eventMask & AWTEvent.KEY_EVENT_MASK) != 0) {
mask |= AWTEvent.KEY_EVENT_MASK;
}
if (mask != 0) {
parent.proxyEnableEvents(mask);
}
}
} else {
// It's native. If the parent is lightweight it will need some
// help.
Container parent = getContainer();
if (parent != null && parent.isLightweight()) {
relocateComponent();
if (!parent.isRecursivelyVisibleUpToHeavyweightContainer())
{
peer.setVisible(false);
}
}
}
invalidate();