1 /*
2  * Copyright (C) 2016 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.contacts;
18 
19 import android.app.Fragment;
20 import android.app.FragmentManager;
21 import android.app.FragmentTransaction;
22 import android.content.ContentResolver;
23 import android.content.Intent;
24 import android.content.SharedPreferences;
25 import android.os.Bundle;
26 import android.view.View;
27 
28 import com.android.contacts.activities.AppCompatTransactionSafeActivity;
29 import com.android.contacts.testing.InjectedServices;
30 
31 /**
32  * A common superclass for Contacts activities that handles application-wide services, copied from
33  * {@link com.android.contacts.ContactsActivity}, which will be deprecated after Kitkat backporting
34  * is done.
35  */
36 public abstract class AppCompatContactsActivity extends AppCompatTransactionSafeActivity
37         implements ContactSaveService.Listener {
38 
39     private ContentResolver mContentResolver;
40 
41     @Override
getContentResolver()42     public ContentResolver getContentResolver() {
43         if (mContentResolver == null) {
44             InjectedServices services = ContactsApplication.getInjectedServices();
45             if (services != null) {
46                 mContentResolver = services.getContentResolver();
47             }
48             if (mContentResolver == null) {
49                 mContentResolver = super.getContentResolver();
50             }
51         }
52         return mContentResolver;
53     }
54 
55     @Override
getSharedPreferences(String name, int mode)56     public SharedPreferences getSharedPreferences(String name, int mode) {
57         InjectedServices services = ContactsApplication.getInjectedServices();
58         if (services != null) {
59             SharedPreferences prefs = services.getSharedPreferences();
60             if (prefs != null) {
61                 return prefs;
62             }
63         }
64 
65         return super.getSharedPreferences(name, mode);
66     }
67 
68     @Override
getSystemService(String name)69     public Object getSystemService(String name) {
70         Object service = super.getSystemService(name);
71         if (service != null) {
72             return service;
73         }
74 
75         return getApplicationContext().getSystemService(name);
76     }
77 
78     @Override
onCreate(Bundle savedInstanceState)79     protected void onCreate(Bundle savedInstanceState) {
80         ContactSaveService.registerListener(this);
81         super.onCreate(savedInstanceState);
82     }
83 
84     @Override
onDestroy()85     protected void onDestroy() {
86         ContactSaveService.unregisterListener(this);
87         super.onDestroy();
88     }
89 
90     @Override
onServiceCompleted(Intent callbackIntent)91     public void onServiceCompleted(Intent callbackIntent) {
92         onNewIntent(callbackIntent);
93     }
94 
95     /**
96      * Convenient version of {@link FragmentManager#findFragmentById(int)}, which throws
97      * an exception if the fragment doesn't exist.
98      */
99     @SuppressWarnings("unchecked")
getFragment(int id)100     public <T extends Fragment> T getFragment(int id) {
101         T result = (T)getFragmentManager().findFragmentById(id);
102         if (result == null) {
103             throw new IllegalArgumentException("fragment 0x" + Integer.toHexString(id)
104                     + " doesn't exist");
105         }
106         return result;
107     }
108 
109     /**
110      * Convenient version of {@link #findViewById(int)}, which throws
111      * an exception if the view doesn't exist.
112      */
113     @SuppressWarnings("unchecked")
getView(int id)114     public <T extends View> T getView(int id) {
115         T result = (T)findViewById(id);
116         if (result == null) {
117             throw new IllegalArgumentException("view 0x" + Integer.toHexString(id)
118                     + " doesn't exist");
119         }
120         return result;
121     }
122 
showFragment(FragmentTransaction ft, Fragment f)123     protected static void showFragment(FragmentTransaction ft, Fragment f) {
124         if ((f != null) && f.isHidden()) ft.show(f);
125     }
126 
hideFragment(FragmentTransaction ft, Fragment f)127     protected static void hideFragment(FragmentTransaction ft, Fragment f) {
128         if ((f != null) && !f.isHidden()) ft.hide(f);
129     }
130 }
131