content: /*
   * Created on Oct 8, 2007
   * 
   * 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.
   * 
   * Copyright @2007-2013 the original author or authors.
   */
  package org.fest.swing.monitor;
  
  import java.awt.Window;
  import java.awt.event.ComponentEvent;
  import java.awt.event.ComponentListener;
  import java.awt.event.WindowAdapter;
  import java.awt.event.WindowEvent;
  
  import javax.annotation.Nonnull;
  
  import org.fest.swing.annotation.RunsInEDT;
  
  /**
   * Keeps track of window visibility state.
   * 
   * @author Alex Ruiz
   * @author Yvonne Wang
   */
  class WindowVisibilityMonitor extends WindowAdapter implements ComponentListener {
    private final Windows windows;
  
    WindowVisibilityMonitor(@Nonnull Windows windows) {
      this.windows = windows;
    }
  
    @Override
    public void componentShown(ComponentEvent e) {
      Object source = e.getSource();
      if (!(source instanceof Window)) {
        return;
      }
      windows.markAsShowing((Window) source);
    }
  
    @Override
    public void componentHidden(ComponentEvent e) {
      Object source = e.getSource();
      if (!(source instanceof Window)) {
        return;
      }
      windows.markAsHidden((Window) source);
    }
  
    @RunsInEDT
    @Override
    public void windowClosed(WindowEvent e) {
      Window w = e.getWindow();
      w.removeComponentListener(this);
      w.removeWindowListener(this);
    }
  
    @Override
    public void componentMoved(ComponentEvent e) {}
  
    @Override
    public void componentResized(ComponentEvent e) {}
  }
  