1 /* 2 * Copyright (C) 2008 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 package com.android.launcher3; 18 19 import android.view.View; 20 21 import com.android.launcher3.DropTarget.DragObject; 22 import com.android.launcher3.logging.UserEventDispatcher.LogContainerProvider; 23 24 /** 25 * Interface defining an object that can originate a drag. 26 */ 27 public interface DragSource extends LogContainerProvider { 28 29 /** 30 * @return whether items dragged from this source supports 'App Info' 31 */ 32 boolean supportsAppInfoDropTarget(); 33 34 /** 35 * @return whether items dragged from this source supports 'Delete' drop target (e.g. to remove 36 * a shortcut.) If this returns false, the drop target will say "Cancel" instead of "Remove." 37 */ 38 boolean supportsDeleteDropTarget(); 39 40 /* 41 * @return the scale of the icons over the workspace icon size 42 */ 43 float getIntrinsicIconScaleFactor(); 44 45 /** 46 * A callback made back to the source after an item from this source has been dropped on a 47 * DropTarget. 48 */ 49 void onDropCompleted(View target, DragObject d, boolean isFlingToDelete, boolean success); 50 } 51
