DragEvent.java

/*
 * Copyright (c) 2010 Zhihua (Dennis) Jiang
 * 
 * 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.gwtmobile.ui.client.event;

import com.google.gwt.user.client.Event;

public class DragEvent {
    public enum Type {Start, Move, End};

	public final double X, Y;
	public final double OffsetX, OffsetY;
	private Event _nativeEvent;
    private boolean _stopPropagation = false;
    private Type _type;
    
	public DragEvent(Event nativeEvent, Type type, double x, double y, double offsetX, double offsetY) {
	    _nativeEvent = nativeEvent;
	    _type = type;
		X = x;
		Y = y;
		OffsetX = offsetX;
		OffsetY = offsetY;
	}
		
	public void stopPropagation() {
	    _nativeEvent.stopPropagation();
	    _stopPropagation = true;
	}
	
	public boolean getStopPropagation() {
	    return _stopPropagation;
	}
	
	public Event getNativeEvent() {
	    return _nativeEvent;
	}
	
	public void dispatch(DragEventsHandler handler) {
        switch (_type) {
        case Start:
            handler.onDragStart(this);
            break;
        case Move:
            handler.onDragMove(this);
            break;
        case End:
            handler.onDragEnd(this);
            break;
        }
	}

}