/*
 * Copyright 2009 Fred Sauer
 * 
 * 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.allen_sauer.gwt.dnd.client;

import com.allen_sauer.gwt.dnd.client.util.StringUtil;

import java.util.EventObject;

/**
 * Common implementation class for {@link DragStartEvent} and {@link DragEndEvent}.
 */
@SuppressWarnings("serial")
abstract class DragEvent extends EventObject {

  final transient DragContext context;

  DragEvent(DragContext context) {
    super(context.draggable);
    this.context = context;
  }

  /**
   * Get the drag context for the drag operation.
   * 
   * @return the drag context
   */
  public DragContext getContext() {
    return context;
  }

  String getSourceShortTypeName() {
    return StringUtil.getShortTypeName(getSource());
  }
}