/********************************************************************************
* *
* (c) Copyright 2010 Verizon Communications USA and The Open University UK *
* *
* This software is freely distributed in accordance with *
* the GNU Lesser General Public (LGPL) license, version 3 or later *
* as published by the Free Software Foundation. *
* For details see LGPL: http://www.fsf.org/licensing/licenses/lgpl.html *
* and GPL: http://www.fsf.org/licensing/licenses/gpl-3.0.html *
* *
* This software is provided by the copyright holders and contributors "as is" *
* and any express or implied warranties, including, but not limited to, the *
* implied warranties of merchantability and fitness for a particular purpose *
* are disclaimed. In no event shall the copyright owner or contributors be *
* liable for any direct, indirect, incidental, special, exemplary, or *
* consequential damages (including, but not limited to, procurement of *
* substitute goods or services; loss of use, data, or profits; or business *
* interruption) however caused and on any theory of liability, whether in *
* contract, strict liability, or tort (including negligence or otherwise) *
* arising in any way out of the use of this software, even if advised of the *
* possibility of such damage. *
* *
********************************************************************************/
package com.compendium.ui.popups;
import java.awt.Component;
import java.awt.MouseInfo;
import javax.swing.JFrame;
import javax.swing.JPopupMenu;
import javax.swing.event.PopupMenuEvent;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
/**
* Base class for popup menus.
* @author rudolf
*
*/
public class UIPopupMenu extends JPopupMenu {
static final Logger log = LoggerFactory.getLogger(JPopupMenu.class);
/**
*
*/
private static final long serialVersionUID = -1230200820967163146L;
/**
* The frame of the parent.
*/
protected JFrame oAppframe = null;
/**
* Constructor.
* @param appframe the main application frame to bring to front when
* menu is shown
*/
public UIPopupMenu( JFrame appframe ) {
super();
oAppframe = appframe;
}
/**
* Show this popup at the current mouse position
* @param invoker the component on which to show the popup
*/
public void show(Component invoker) {
int x = MouseInfo.getPointerInfo().getLocation().x - invoker.getLocationOnScreen().x;
int y = MouseInfo.getPointerInfo().getLocation().y - invoker.getLocationOnScreen().y;
// bring application to front so that the popup menu won't get obscured
oAppframe.setAlwaysOnTop(true);
show( invoker, x, y );
repaint(); // without this, menu sometimes gets drawn incompletely
try {
synchronized( this ) {
// wait until the user has made his choice -> actionPerformed()
// (this is executed in the application thread)
wait();
}
}
catch( InterruptedException ex ) {
log.info("UIDropFilePopup.show: Interrupted."); //$NON-NLS-1$
}
finally {
oAppframe.setAlwaysOnTop(false);
}
}
/**
* When the popup menu becomes visible.
* @param event The event that occured
*/
public void popupMenuWillBecomeVisible(PopupMenuEvent event) {}
/**
* When the popup menu becomes invisible.
* @param event The event that occured
*/
public void popupMenuWillBecomeInvisible(PopupMenuEvent event) {}
/**
* When the popup menu is canceled.
* @param event The event that occured
*/
public void popupMenuCanceled(PopupMenuEvent event) {
synchronized( this ) {
// wake up application thread - user has cancelled the menu
// by clicking outside the menu
// (this is executed as a callback in the Swing thread)
notifyAll();
}
}
}