1/*
2 * Copyright (C) 2007 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 com.android.internal.app;
18
19import android.app.Activity;
20import android.app.Dialog;
21import android.content.DialogInterface;
22import android.os.Bundle;
23import android.view.KeyEvent;
24import android.view.ViewGroup;
25import android.view.accessibility.AccessibilityEvent;
26
27/**
28 * An activity that follows the visual style of an AlertDialog.
29 *
30 * @see #mAlert
31 * @see #mAlertParams
32 * @see #setupAlert()
33 */
34public abstract class AlertActivity extends Activity implements DialogInterface {
35
36    /**
37     * The model for the alert.
38     *
39     * @see #mAlertParams
40     */
41    protected AlertController mAlert;
42
43    /**
44     * The parameters for the alert.
45     */
46    protected AlertController.AlertParams mAlertParams;
47
48    @Override
49    protected void onCreate(Bundle savedInstanceState) {
50        super.onCreate(savedInstanceState);
51
52        mAlert = AlertController.create(this, this, getWindow());
53        mAlertParams = new AlertController.AlertParams(this);
54    }
55
56    public void cancel() {
57        finish();
58    }
59
60    public void dismiss() {
61        // This is called after the click, since we finish when handling the
62        // click, don't do that again here.
63        if (!isFinishing()) {
64            finish();
65        }
66    }
67
68    @Override
69    public boolean dispatchPopulateAccessibilityEvent(AccessibilityEvent event) {
70        return dispatchPopulateAccessibilityEvent(this, event);
71    }
72
73    public static boolean dispatchPopulateAccessibilityEvent(Activity act,
74            AccessibilityEvent event) {
75        event.setClassName(Dialog.class.getName());
76        event.setPackageName(act.getPackageName());
77
78        ViewGroup.LayoutParams params = act.getWindow().getAttributes();
79        boolean isFullScreen = (params.width == ViewGroup.LayoutParams.MATCH_PARENT) &&
80                (params.height == ViewGroup.LayoutParams.MATCH_PARENT);
81        event.setFullScreen(isFullScreen);
82
83        return false;
84    }
85
86    /**
87     * Sets up the alert, including applying the parameters to the alert model,
88     * and installing the alert's content.
89     *
90     * @see #mAlert
91     * @see #mAlertParams
92     */
93    protected void setupAlert() {
94        mAlert.installContent(mAlertParams);
95    }
96
97    @Override
98    public boolean onKeyDown(int keyCode, KeyEvent event) {
99        if (mAlert.onKeyDown(keyCode, event)) return true;
100        return super.onKeyDown(keyCode, event);
101    }
102
103    @Override
104    public boolean onKeyUp(int keyCode, KeyEvent event) {
105        if (mAlert.onKeyUp(keyCode, event)) return true;
106        return super.onKeyUp(keyCode, event);
107    }
108}
109