MousePopupListener.java
// @formatter:off
/*******************************************************************************
*
* This file is part of JMad.
*
* Copyright (c) 2008-2011, CERN. All rights reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
******************************************************************************/
// @formatter:on
package cern.accsoft.steering.util.gui.menu;
import java.awt.Component;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;
import javax.swing.JPopupMenu;
/**
* extension for {@link MouseAdapter} to check if a popup menu shall show up.
*
* @author Kajetan Fuchsberger (kajetan.fuchsberger at cern.ch)
*/
public class MousePopupListener extends MouseAdapter {
private JPopupMenu popupMenu;
private Component invoker;
/**
* the constructor
*
* @param invoker the parent component
* @param popupMenu the popupMenu that shall show up, when the mouse is clicked
*/
public MousePopupListener(Component invoker, JPopupMenu popupMenu) {
this.invoker = invoker;
this.invoker.addMouseListener(this);
this.popupMenu = popupMenu;
}
@Override
public void mousePressed(MouseEvent evt) {
super.mousePressed(evt);
checkPopup(evt);
}
@Override
public void mouseReleased(MouseEvent evt) {
super.mouseReleased(evt);
checkPopup(evt);
}
@Override
public void mouseClicked(MouseEvent evt) {
super.mouseClicked(evt);
checkPopup(evt);
}
private void checkPopup(MouseEvent evt) {
if (evt.isPopupTrigger()) {
popupMenu.show(invoker, evt.getX(), evt.getY());
}
}
}