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      1 /*
      2  * Copyright (C) 2008 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.systemui.statusbar;
     18 
     19 import android.content.BroadcastReceiver;
     20 import android.content.Context;
     21 import android.content.Intent;
     22 import android.content.IntentFilter;
     23 import android.util.AttributeSet;
     24 import android.util.Slog;
     25 import android.widget.TextView;
     26 import android.view.MotionEvent;
     27 
     28 import java.text.DateFormat;
     29 import java.util.Date;
     30 
     31 public final class DateView extends TextView {
     32     private static final String TAG = "DateView";
     33 
     34     private boolean mUpdating = false;
     35 
     36     private BroadcastReceiver mIntentReceiver = new BroadcastReceiver() {
     37         @Override
     38         public void onReceive(Context context, Intent intent) {
     39             String action = intent.getAction();
     40             if (action.equals(Intent.ACTION_TIME_TICK)
     41                     || action.equals(Intent.ACTION_TIMEZONE_CHANGED)) {
     42                 updateClock();
     43             }
     44         }
     45     };
     46 
     47     public DateView(Context context, AttributeSet attrs) {
     48         super(context, attrs);
     49     }
     50 
     51     @Override
     52     protected void onAttachedToWindow() {
     53         super.onAttachedToWindow();
     54     }
     55 
     56     @Override
     57     protected void onDetachedFromWindow() {
     58         super.onDetachedFromWindow();
     59         setUpdates(false);
     60     }
     61 
     62     @Override
     63     protected int getSuggestedMinimumWidth() {
     64         // makes the large background bitmap not force us to full width
     65         return 0;
     66     }
     67 
     68     private final void updateClock() {
     69         Date now = new Date();
     70         setText(DateFormat.getDateInstance(DateFormat.LONG).format(now));
     71     }
     72 
     73     void setUpdates(boolean update) {
     74         if (update != mUpdating) {
     75             mUpdating = update;
     76             if (update) {
     77                 // Register for Intent broadcasts for the clock and battery
     78                 IntentFilter filter = new IntentFilter();
     79                 filter.addAction(Intent.ACTION_TIME_TICK);
     80                 filter.addAction(Intent.ACTION_TIMEZONE_CHANGED);
     81                 mContext.registerReceiver(mIntentReceiver, filter, null, null);
     82                 updateClock();
     83             } else {
     84                 mContext.unregisterReceiver(mIntentReceiver);
     85             }
     86         }
     87     }
     88 }
     89 
     90