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      1 /*
      2  * Copyright (C) 2011 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.camera.ui;
     18 
     19 import android.content.Context;
     20 import android.view.View;
     21 
     22 import java.util.ArrayList;
     23 import java.util.HashMap;
     24 
     25 /**
     26  * A manager which notifies the event of a new popup in order to dismiss the
     27  * old popup if exists.
     28  */
     29 public class PopupManager {
     30     private static HashMap<Context, PopupManager> sMap =
     31             new HashMap<Context, PopupManager>();
     32 
     33     public interface OnOtherPopupShowedListener {
     34         public void onOtherPopupShowed();
     35     }
     36 
     37     private PopupManager() {}
     38 
     39     private ArrayList<OnOtherPopupShowedListener> mListeners = new ArrayList();
     40 
     41     public void notifyShowPopup(View view) {
     42         for (OnOtherPopupShowedListener listener : mListeners) {
     43             if ((View) listener != view) {
     44                 listener.onOtherPopupShowed();
     45             }
     46         }
     47     }
     48 
     49     public void setOnOtherPopupShowedListener(OnOtherPopupShowedListener listener) {
     50         mListeners.add(listener);
     51     }
     52 
     53     public static PopupManager getInstance(Context context) {
     54         PopupManager instance = sMap.get(context);
     55         if (instance == null) {
     56             instance = new PopupManager();
     57             sMap.put(context, instance);
     58         }
     59         return instance;
     60     }
     61 
     62     public static void removeInstance(Context context) {
     63         PopupManager instance = sMap.get(context);
     64         sMap.remove(context);
     65     }
     66 }
     67