1 /*
2  * Copyright (C) 2017 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.settings.widget;
18 
19 import android.content.Context;
20 import android.graphics.Rect;
21 import android.util.AttributeSet;
22 import android.view.View;
23 import android.view.ViewParent;
24 
25 /**
26  * An EditText that, instead of scrolling to itself when focused, will request scrolling to its
27  * parent. This is used in ChooseLockPassword to do make a best effort for not hiding the error
28  * messages for why the password is invalid under the keyboard.
29  */
30 public class ScrollToParentEditText extends ImeAwareEditText {
31 
32     private Rect mRect = new Rect();
33 
ScrollToParentEditText(Context context, AttributeSet attrs)34     public ScrollToParentEditText(Context context, AttributeSet attrs) {
35         super(context, attrs);
36     }
37 
38     @Override
requestRectangleOnScreen(Rect rectangle, boolean immediate)39     public boolean requestRectangleOnScreen(Rect rectangle, boolean immediate) {
40         ViewParent parent = getParent();
41         if (parent instanceof View) {
42             // Request the entire parent view to be shown, which in ChooseLockPassword's case,
43             // will include messages for why the password is invalid (if any).
44             ((View) parent).getDrawingRect(mRect);
45             return ((View) parent).requestRectangleOnScreen(mRect, immediate);
46         } else {
47             return super.requestRectangleOnScreen(rectangle, immediate);
48         }
49     }
50 }
51