1/*
2 * Copyright (C) 2011 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
17package android.view;
18
19import android.content.Context;
20import android.graphics.Canvas;
21import android.graphics.Color;
22import android.os.SystemClock;
23import android.util.AttributeSet;
24import android.util.Log;
25import android.view.View;
26
27/**
28 * A View that will throw a RuntimeException if onAttachedToWindow and
29 * onDetachedFromWindow is called in the wrong order for ViewAttachTest
30 */
31public class ViewAttachView extends View {
32    public static final String TAG = "OnAttachedTest";
33    private boolean attached;
34
35    public ViewAttachView(Context context, AttributeSet attrs, int defStyle) {
36        super(context, attrs, defStyle);
37        init(attrs, defStyle);
38    }
39
40    public ViewAttachView(Context context, AttributeSet attrs) {
41        super(context, attrs);
42        init(attrs, 0);
43    }
44
45    public ViewAttachView(Context context) {
46        super(context);
47        init(null, 0);
48    }
49
50    private void init(AttributeSet attrs, int defStyle) {
51        SystemClock.sleep(2000);
52    }
53
54    @Override
55    protected void onAttachedToWindow() {
56        Log.d(TAG, "onAttachedToWindow");
57        super.onAttachedToWindow();
58        if (attached) {
59            throw new RuntimeException("OnAttachedToWindow called more than once in a row");
60        }
61        attached = true;
62    }
63
64    @Override
65    protected void onDetachedFromWindow() {
66        Log.d(TAG, "onDetachedFromWindow");
67        super.onDetachedFromWindow();
68        if (!attached) {
69            throw new RuntimeException(
70                    "onDetachedFromWindowcalled without prior call to OnAttachedToWindow");
71        }
72        attached = false;
73    }
74
75    @Override
76    protected void onDraw(Canvas canvas) {
77        super.onDraw(canvas);
78        canvas.drawColor(Color.BLUE);
79    }
80}
81