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      1 /*
      2  * Copyright (C) 2006 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.server.am;
     18 
     19 import com.android.internal.R;
     20 
     21 import android.app.AlertDialog;
     22 import android.content.Context;
     23 import android.os.Handler;
     24 import android.os.Message;
     25 import android.view.KeyEvent;
     26 import android.view.WindowManager;
     27 import android.widget.Button;
     28 
     29 class BaseErrorDialog extends AlertDialog {
     30     private static final int ENABLE_BUTTONS = 0;
     31     private static final int DISABLE_BUTTONS = 1;
     32 
     33     private boolean mConsuming = true;
     34 
     35     public BaseErrorDialog(Context context) {
     36         super(context, com.android.internal.R.style.Theme_Dialog_AppError);
     37 
     38         getWindow().setType(WindowManager.LayoutParams.TYPE_SYSTEM_ALERT);
     39         getWindow().setFlags(WindowManager.LayoutParams.FLAG_ALT_FOCUSABLE_IM,
     40                 WindowManager.LayoutParams.FLAG_ALT_FOCUSABLE_IM);
     41         WindowManager.LayoutParams attrs = getWindow().getAttributes();
     42         attrs.setTitle("Error Dialog");
     43         getWindow().setAttributes(attrs);
     44     }
     45 
     46     public void onStart() {
     47         super.onStart();
     48         mHandler.sendEmptyMessage(DISABLE_BUTTONS);
     49         mHandler.sendMessageDelayed(mHandler.obtainMessage(ENABLE_BUTTONS), 1000);
     50     }
     51 
     52     public boolean dispatchKeyEvent(KeyEvent event) {
     53         if (mConsuming) {
     54             //Slog.i(TAG, "Consuming: " + event);
     55             return true;
     56         }
     57         //Slog.i(TAG, "Dispatching: " + event);
     58         return super.dispatchKeyEvent(event);
     59     }
     60 
     61     private void setEnabled(boolean enabled) {
     62         Button b = (Button)findViewById(R.id.button1);
     63         if (b != null) {
     64             b.setEnabled(enabled);
     65         }
     66         b = (Button)findViewById(R.id.button2);
     67         if (b != null) {
     68             b.setEnabled(enabled);
     69         }
     70         b = (Button)findViewById(R.id.button3);
     71         if (b != null) {
     72             b.setEnabled(enabled);
     73         }
     74     }
     75 
     76     private Handler mHandler = new Handler() {
     77         public void handleMessage(Message msg) {
     78             if (msg.what == ENABLE_BUTTONS) {
     79                 mConsuming = false;
     80                 setEnabled(true);
     81             } else if (msg.what == DISABLE_BUTTONS) {
     82                 setEnabled(false);
     83             }
     84         }
     85     };
     86 }
     87