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