2.1/user/src/com/google/gwt/user/client/ui/ScrollListenerCollection.java

/*
 * Copyright 2007 Google Inc.
 * 
 * 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.
 */
package com.google.gwt.user.client.ui;

import java.util.ArrayList;

/**
 * A helper class for implementers of the SourcesScrollEvents interface. This
 * subclass of {@link ArrayList} assumes that all objects added to it will be of
 * type {@link com.google.gwt.user.client.ui.ScrollListener}.
 * 
 * @deprecated Widgets should now manage their own handlers via {@link Widget#addDomHandler}
 */
@Deprecated
public class ScrollListenerCollection extends ArrayList<ScrollListener> {

  /**
   * Fires a scroll event to all listeners.
   * 
   * @param sender the widget sending the event
   * @param scrollLeft the horizontal scroll offset
   * @param scrollTop the vertical scroll offset
   */
  public void fireScroll(Widget sender, int scrollLeft, int scrollTop) {
    for (ScrollListener listener : this) {
      listener.onScroll(sender, scrollLeft, scrollTop);
    }
  }
}