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;
18 
19 import android.content.Context;
20 import android.util.AttributeSet;
21 import android.view.View.OnDragListener;
22 import android.widget.TextView;
23 
24 /**
25  * An {@link TextView} that uses drawable states to distinct between normal and highlighted states.
26  */
27 
28 public final class DragOverTextView extends TextView {
29     private static final int[] STATE_HIGHLIGHTED = {R.attr.state_highlighted};
30 
31     private boolean mHighlighted = false;
32 
DragOverTextView(Context context, AttributeSet attrs)33     public DragOverTextView(Context context, AttributeSet attrs) {
34         super(context, attrs);
35     }
36 
37     @Override
onCreateDrawableState(int extraSpace)38     protected int[] onCreateDrawableState(int extraSpace) {
39         final int[] drawableState = super.onCreateDrawableState(extraSpace + 1);
40 
41         if (mHighlighted) {
42             mergeDrawableStates(drawableState, STATE_HIGHLIGHTED);
43         }
44 
45         return drawableState;
46     }
47 
setHighlight(boolean highlight)48     public void setHighlight(boolean highlight) {
49         mHighlighted = highlight;
50         refreshDrawableState();
51     }
52 }
53