/*
* Freeplane - mind map editor
* Copyright (C) 2013 Dimitry
*
* This file author is Dimitry
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
package org.freeplane.view.swing.ui;
import java.awt.Component;
import java.awt.Point;
import java.awt.Window;
import java.awt.event.MouseEvent;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
import javax.swing.SwingUtilities;
import org.freeplane.core.ui.components.UITools;
/**
* @author Dimitry Polivaev
* 21.01.2013
*/
public class MovedMouseEventFilter extends WindowAdapter {
private Window trackedWindow = null;
private Point mousePositionAfterFocusGained = null;
public boolean isRelevant(MouseEvent e) {
if(mousePositionAfterFocusGained == null)
return true;
final Component component = e.getComponent();
final Window windowToTrack = SwingUtilities.getWindowAncestor(component);
if(! windowToTrack.equals(trackedWindow))
return true;
final Point eventPoint = e.getPoint();
UITools.convertPointToAncestor(component, eventPoint, trackedWindow);
final boolean hasMoved = !eventPoint.equals(mousePositionAfterFocusGained);
if(hasMoved)
mousePositionAfterFocusGained = null;
return hasMoved;
}
@Override
public void windowGainedFocus(WindowEvent e) {
try {
mousePositionAfterFocusGained = trackedWindow.getMousePosition();
}
// Work around for mac os java bug
catch (ClassCastException ex) {
}
}
public void trackWindowForComponent(Component c){
final Window windowToTrack = SwingUtilities.getWindowAncestor(c);
if(windowToTrack.equals(trackedWindow))
return;
if(trackedWindow != null)
trackedWindow.removeWindowFocusListener(this);
trackedWindow = windowToTrack;
trackedWindow.addWindowFocusListener(this);
mousePositionAfterFocusGained = null;
}
}