/**
* Sets the visibility of the popup menu.
*
* @param b true to make the popup visible, or false to hide it
* @beaninfo bound: true description: Makes the popup visible
*/
public void setVisible(boolean b) {
if (DEBUG) {
System.out.println("JPopupMenu.setVisible " + b);
}
// Is it a no-op?
if (b == isVisible()) return;
// if closing, first close all Submenus
if (b == false) {
// 4234793: This is a workaround because JPopupMenu.firePopupMenuCanceled is
// a protected method and cannot be called from BasicPopupMenuUI directly
// The real solution could be to make
// firePopupMenuCanceled public and call it directly.
Boolean doCanceled = (Boolean) getClientProperty("JPopupMenu.firePopupMenuCanceled");
if (doCanceled != null && doCanceled == Boolean.TRUE) {
putClientProperty("JPopupMenu.firePopupMenuCanceled", Boolean.FALSE);
firePopupMenuCanceled();
}
getSelectionModel().clearSelection();
} else {
// This is a popup menu with MenuElement children,
// set selection path before popping up!
if (isPopupMenu()) {
MenuElement me[] = new MenuElement[1];
me[0] = this;
MenuSelectionManager.defaultManager().setSelectedPath(me);
}
}
if (b) {
firePopupMenuWillBecomeVisible();
popup = getPopup();
firePropertyChange("visible", Boolean.FALSE, Boolean.TRUE);
} else if (popup != null) {
firePopupMenuWillBecomeInvisible();
popup.hide();
popup = null;
firePropertyChange("visible", Boolean.TRUE, Boolean.FALSE);
// 4694797: When popup menu is made invisible, selected path
// should be cleared
if (isPopupMenu()) {
MenuSelectionManager.defaultManager().clearSelectedPath();
}
}
}
/**
* Processes key stroke events such as mnemonics and accelerators.
*
* @param evt the key event to be processed
*/
protected void processKeyEvent(KeyEvent evt) {
MenuSelectionManager.defaultManager().processKeyEvent(evt);
if (evt.isConsumed()) {
return;
}
super.processKeyEvent(evt);
}