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      1 /*
      2  * Copyright (C) 2016 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.documentsui.dirlist;
     18 
     19 import android.view.DragEvent;
     20 import android.view.View;
     21 
     22 import com.android.documentsui.DragAndDropManager;
     23 import com.android.documentsui.ItemDragListener;
     24 
     25 import java.util.TimerTask;
     26 
     27 import javax.annotation.Nullable;
     28 
     29 class DirectoryDragListener extends ItemDragListener<DragHost<?>> {
     30 
     31 
     32     DirectoryDragListener(com.android.documentsui.dirlist.DragHost<?> host) {
     33         super(host);
     34     }
     35 
     36     @Override
     37     public boolean onDrag(View v, DragEvent event) {
     38         final boolean result = super.onDrag(v, event);
     39 
     40         switch (event.getAction()) {
     41             case DragEvent.ACTION_DRAG_ENDED:
     42                 // getResult() is true if drag was accepted
     43                 mDragHost.dragStopped(event.getResult());
     44                 break;
     45             default:
     46                 break;
     47         }
     48 
     49         return result;
     50     }
     51 
     52     @Override
     53     public boolean handleDropEventChecked(View v, DragEvent event) {
     54         return mDragHost.handleDropEvent(v, event);
     55     }
     56 
     57     @Override
     58     public @Nullable TimerTask createOpenTask(final View v, DragEvent event) {
     59         return mDragHost.canSpringOpen(v)
     60                 ? super.createOpenTask(v, event) : null;
     61     }
     62 }