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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 = new AlertController(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         event.setClassName(Dialog.class.getName());
71         event.setPackageName(getPackageName());
72 
73         ViewGroup.LayoutParams params = getWindow().getAttributes();
74         boolean isFullScreen = (params.width == ViewGroup.LayoutParams.MATCH_PARENT) &&
75                 (params.height == ViewGroup.LayoutParams.MATCH_PARENT);
76         event.setFullScreen(isFullScreen);
77 
78         return false;
79     }
80 
81     /**
82      * Sets up the alert, including applying the parameters to the alert model,
83      * and installing the alert's content.
84      *
85      * @see #mAlert
86      * @see #mAlertParams
87      */
setupAlert()88     protected void setupAlert() {
89         mAlertParams.apply(mAlert);
90         mAlert.installContent();
91     }
92 
93     @Override
onKeyDown(int keyCode, KeyEvent event)94     public boolean onKeyDown(int keyCode, KeyEvent event) {
95         if (mAlert.onKeyDown(keyCode, event)) return true;
96         return super.onKeyDown(keyCode, event);
97     }
98 
99     @Override
onKeyUp(int keyCode, KeyEvent event)100     public boolean onKeyUp(int keyCode, KeyEvent event) {
101         if (mAlert.onKeyUp(keyCode, event)) return true;
102         return super.onKeyUp(keyCode, event);
103     }
104 }
105