/*
* Copyright (C) 2010 Eric Harlow
*
* 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.ericharlow.DragNDrop;
import android.view.View;
import android.widget.ListView;
/**
* Implement to handle an item being dragged.
*
* @author Eric Harlow
*/
public interface DragListener {
/**
* Called when a drag starts.
* @param itemView - the view of the item to be dragged i.e. the drag view
*/
void onStartDrag(View itemView);
/**
* Called when a drag is to be performed.
* @param x - horizontal coordinate of MotionEvent.
* @param y - verital coordinate of MotionEvent.
* @param listView - the listView
*/
void onDrag(int x, int y, ListView listView);
/**
* Called when a drag stops.
* Any changes in onStartDrag need to be undone here
* so that the view can be used in the list again.
* @param itemView - the view of the item to be dragged i.e. the drag view
*/
void onStopDrag(View itemView);
}