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      1 /*
      2  * Copyright (C) 2012 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.example.android.lifecycle.util;
     18 
     19 import java.util.*;
     20 
     21 public class StatusTracker {
     22   private Map<String, String> mStatusMap;
     23   private List<String> mMethodList;
     24   private static StatusTracker ourInstance = new StatusTracker();
     25   private static final String STATUS_SUFFIX = "ed";
     26 
     27   public static StatusTracker getInstance() {
     28     return ourInstance;
     29   }
     30 
     31   private StatusTracker() {
     32     mStatusMap = new LinkedHashMap<String, String>();
     33     mMethodList = new ArrayList<String>();
     34   }
     35 
     36   public List<String> getMethodList() {
     37     return mMethodList;
     38   }
     39 
     40   public void clear() {
     41     mMethodList.clear();
     42     mStatusMap.clear();
     43   }
     44 
     45   /**
     46    * Adds the status value for the given activityName into the Map.
     47    *
     48    * @param activityName
     49    * @param status
     50    */
     51   public void setStatus(String activityName, String status) {
     52     mMethodList.add(activityName + "." + status + "()");
     53     if (mStatusMap.containsKey(activityName)) mStatusMap.remove(activityName);
     54     mStatusMap.put(activityName, status);
     55   }
     56 
     57   /**
     58    * Gets the status value for the given activityName.
     59    *
     60    * @param activityName
     61    * @return
     62    */
     63   public String getStatus(String activityName) {
     64     String status = mStatusMap.get(activityName);
     65     status = status.substring(2, status.length());
     66 
     67     // String manipulation to ensure the status value is spelled correctly.
     68     if (status.endsWith("e")) {
     69       status = status.substring(0, status.length() - 1);
     70     }
     71     if (status.endsWith("p")) {
     72       status = status + "p";
     73     }
     74     status = status + STATUS_SUFFIX;
     75     return status;
     76   }
     77 
     78   public Set<String> keySet() {
     79     return mStatusMap.keySet();
     80   }
     81 }
     82