content: /*
   * Created on Oct 9, 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 static java.awt.AWTEvent.MOUSE_EVENT_MASK;
  import static java.awt.AWTEvent.MOUSE_MOTION_EVENT_MASK;
  import static java.awt.AWTEvent.PAINT_EVENT_MASK;
  import static javax.swing.SwingUtilities.getWindowAncestor;
  import static org.fest.swing.listener.WeakEventListener.attachAsWeakEventListener;
  
  import java.awt.AWTEvent;
  import java.awt.Component;
  import java.awt.Toolkit;
  import java.awt.Window;
  import java.awt.event.AWTEventListener;
  import java.awt.event.MouseEvent;
  
  import javax.annotation.Nonnull;
  
  import org.fest.swing.annotation.RunsInEDT;
  
  /**
   * Event listener that monitors when a window is ready to receive OS-level event input.
   * 
   * @author Alex Ruiz
   */
  final class WindowAvailabilityMonitor implements AWTEventListener {
    private static final long EVENT_MASK = MOUSE_MOTION_EVENT_MASK | MOUSE_EVENT_MASK | PAINT_EVENT_MASK;
  
    private final Windows windows;
  
    WindowAvailabilityMonitor(@Nonnull Windows windows) {
      this.windows = windows;
    }
  
    void attachTo(@Nonnull Toolkit toolkit) {
      attachAsWeakEventListener(toolkit, this, EVENT_MASK);
    }
  
    @RunsInEDT
    @Override
    public void eventDispatched(AWTEvent e) {
      if (!(e instanceof MouseEvent)) {
        return;
      }
      Object source = e.getSource();
      if (!(source instanceof Component)) {
        return;
      }
      Component c = (Component) source;
      Window w = c instanceof Window ? (Window) c : getWindowAncestor(c);
      windows.markAsReady(w);
    }
  }
  