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 
17 package com.android.internal.app;
18 
19 import android.app.Activity;
20 import android.app.Dialog;
21 import android.content.DialogInterface;
22 import android.os.Bundle;
23 import android.view.KeyEvent;
24 import android.view.ViewGroup;
25 import 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  */
34 public 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
onCreate(Bundle savedInstanceState)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 
cancel()56     public void cancel() {
57         finish();
58     }
59 
dismiss()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
dispatchPopulateAccessibilityEvent(AccessibilityEvent event)69     public boolean dispatchPopulateAccessibilityEvent(AccessibilityEvent event) {
70         return dispatchPopulateAccessibilityEvent(this, event);
71     }
72 
dispatchPopulateAccessibilityEvent(Activity act, AccessibilityEvent event)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      */
setupAlert()93     protected void setupAlert() {
94         mAlert.installContent(mAlertParams);
95     }
96 
97     @Override
onKeyDown(int keyCode, KeyEvent event)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
onKeyUp(int keyCode, KeyEvent event)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