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