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 import android.widget.ImeAwareEditText;
25 
26 /**
27  * An EditText that, instead of scrolling to itself when focused, will request scrolling to its
28  * parent. This is used in ChooseLockPassword to do make a best effort for not hiding the error
29  * messages for why the password is invalid under the keyboard.
30  */
31 public class ScrollToParentEditText extends ImeAwareEditText {
32 
33     private Rect mRect = new Rect();
34 
ScrollToParentEditText(Context context, AttributeSet attrs)35     public ScrollToParentEditText(Context context, AttributeSet attrs) {
36         super(context, attrs);
37     }
38 
39     @Override
requestRectangleOnScreen(Rect rectangle, boolean immediate)40     public boolean requestRectangleOnScreen(Rect rectangle, boolean immediate) {
41         ViewParent parent = getParent();
42         if (parent instanceof View) {
43             // Request the entire parent view to be shown, which in ChooseLockPassword's case,
44             // will include messages for why the password is invalid (if any).
45             ((View) parent).getDrawingRect(mRect);
46             return ((View) parent).requestRectangleOnScreen(mRect, immediate);
47         } else {
48             return super.requestRectangleOnScreen(rectangle, immediate);
49         }
50     }
51 }
52