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      1 /*
      2  * Copyright (C) 2009 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.cooliris.app;
     18 
     19 import android.app.Activity;
     20 import android.content.Context;
     21 import android.os.Handler;
     22 import android.os.HandlerThread;
     23 import android.util.DisplayMetrics;
     24 import android.widget.Toast;
     25 
     26 import java.util.HashMap;
     27 import java.util.TimeZone;
     28 
     29 import com.cooliris.media.ReverseGeocoder;
     30 
     31 /*
     32  *  TODO: consider adding HashMap<object, object> for globals globals
     33  *  TODO: hook up other activity classes to App (besides Gallery and Search)
     34  */
     35 public class App {
     36 	static private final HashMap<Context, App> mMap = new HashMap<Context, App>();
     37 
     38 	static public App get(Context context) {
     39 		return mMap.get(context);
     40 	}
     41 
     42     public static final TimeZone CURRENT_TIME_ZONE = TimeZone.getDefault();
     43     public static float PIXEL_DENSITY = 0.0f;
     44 
     45 	private final Context mContext;
     46     private final HandlerThread mHandlerThread = new HandlerThread("AppHandlerThread");
     47     private final Handler mHandler;
     48     private ReverseGeocoder mReverseGeocoder = null;
     49 
     50     private boolean mPaused = false;
     51 
     52 	public App(Context context) {
     53 		// register
     54 		mMap.put(context, this);
     55 
     56 		mContext = context;
     57 
     58 		if(PIXEL_DENSITY == 0.0f) {
     59 			DisplayMetrics metrics = new DisplayMetrics();
     60 			((Activity)mContext).getWindowManager().getDefaultDisplay().getMetrics(metrics);
     61 			PIXEL_DENSITY = metrics.density;
     62 		}
     63 
     64         mHandlerThread.start();
     65         mHandler = new Handler(mHandlerThread.getLooper());
     66 
     67 	    mReverseGeocoder = new ReverseGeocoder(mContext);
     68 	}
     69 
     70 	public void shutdown() {
     71         mReverseGeocoder.shutdown();
     72 
     73         // unregister
     74         mMap.put(mContext, null);
     75 	}
     76 
     77     public Context getContext() {
     78         return mContext;
     79     }
     80 
     81     public Handler getHandler() {
     82         while (mHandler == null) {
     83             // Wait till the handler is created.
     84             ;
     85         }
     86         return mHandler;
     87     }
     88 
     89     public ReverseGeocoder getReverseGeocoder() {
     90         return mReverseGeocoder;
     91     }
     92 
     93     public boolean isPaused() {
     94     	return mPaused;
     95     }
     96 
     97 //    public void onCreate(Bundle savedInstanceState) {
     98 //    }
     99 //
    100 //    public void onStart() {
    101 //    }
    102 //
    103 //    public void onRestart() {
    104 //    }
    105 
    106     public void onResume() {
    107     	mPaused = false;
    108     }
    109 
    110     public void onPause() {
    111     	mReverseGeocoder.flushCache();
    112     	mPaused = true;
    113     }
    114 
    115 //    public void onStop() {
    116 //
    117 //    }
    118 //
    119 //    public void onDestroy() {
    120 //    }
    121 
    122     public void showToast(final String string, final int duration) {
    123         mHandler.post(new Runnable() {
    124             public void run() {
    125                 Toast.makeText(mContext, string, duration).show();
    126             }
    127         });
    128     }
    129 }
    130