content: /*
   * Created on Apr 2, 2008
   *
   * 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 @2008-2013 the original author or authors.
   */
  package org.fest.swing.core;
  
  import static org.fest.swing.timing.Pause.pause;
  
  import java.awt.AWTEvent;
  import java.awt.Component;
  import java.awt.EventQueue;
  import java.awt.Toolkit;
  
  import javax.annotation.Nonnull;
  import javax.annotation.Nullable;
  
  import org.fest.swing.input.InputState;
  import org.fest.swing.monitor.WindowMonitor;
  
  /**
   * Posts {@code AWTEvent}s in an AWT {@code EventQueue}.
   *
   * @author Yvonne Wang
   */
  class AWTEventPoster {
    private final Toolkit toolkit;
    private final InputState inputState;
    private final WindowMonitor windowMonitor;
    private final Settings settings;
  
    AWTEventPoster(@Nonnull Toolkit toolkit, @Nonnull InputState inputState, @Nonnull WindowMonitor windowMonitor,
        @Nonnull Settings settings) {
      this.toolkit = toolkit;
      this.inputState = inputState;
      this.windowMonitor = windowMonitor;
      this.settings = settings;
    }
  
    // Post the given event to the corresponding event queue for the given component.
    void postEvent(@Nullable Component c, @Nonnull AWTEvent event) {
      // Force an update of the input state, so that we're in synch internally. Otherwise we might post more events before
      // this one gets processed and end up using stale values for those events.
      inputState.update(event);
      EventQueue eventQueue = eventQueueFor(c);
      if (eventQueue != null) {
        eventQueue.postEvent(event);
      }
      pause(settings.delayBetweenEvents());
    }
  
    /* Usually only needed when dealing with Applets. */
    private @Nullable EventQueue eventQueueFor(@Nullable Component c) {
      return c != null ? windowMonitor.eventQueueFor(c) : toolkit.getSystemEventQueue();
    }
  }
  