1 /*
2  * Copyright (C) 2013 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.incallui.baseui;
18 
19 import android.os.Bundle;
20 import android.support.v4.app.Fragment;
21 
22 /** Parent for all fragments that use Presenters and Ui design. */
23 public abstract class BaseFragment<T extends Presenter<U>, U extends Ui> extends Fragment {
24 
25   private static final String KEY_FRAGMENT_HIDDEN = "key_fragment_hidden";
26 
27   private T presenter;
28 
BaseFragment()29   protected BaseFragment() {
30     presenter = createPresenter();
31   }
32 
createPresenter()33   public abstract T createPresenter();
34 
getUi()35   public abstract U getUi();
36 
37   /**
38    * Presenter will be available after onActivityCreated().
39    *
40    * @return The presenter associated with this fragment.
41    */
getPresenter()42   public T getPresenter() {
43     return presenter;
44   }
45 
46   @Override
onActivityCreated(Bundle savedInstanceState)47   public void onActivityCreated(Bundle savedInstanceState) {
48     super.onActivityCreated(savedInstanceState);
49     presenter.onUiReady(getUi());
50   }
51 
52   @Override
onCreate(Bundle savedInstanceState)53   public void onCreate(Bundle savedInstanceState) {
54     super.onCreate(savedInstanceState);
55     if (savedInstanceState != null) {
56       presenter.onRestoreInstanceState(savedInstanceState);
57       if (savedInstanceState.getBoolean(KEY_FRAGMENT_HIDDEN)) {
58         getFragmentManager().beginTransaction().hide(this).commit();
59       }
60     }
61   }
62 
63   @Override
onDestroyView()64   public void onDestroyView() {
65     super.onDestroyView();
66     presenter.onUiDestroy(getUi());
67   }
68 
69   @Override
onSaveInstanceState(Bundle outState)70   public void onSaveInstanceState(Bundle outState) {
71     super.onSaveInstanceState(outState);
72     presenter.onSaveInstanceState(outState);
73     outState.putBoolean(KEY_FRAGMENT_HIDDEN, isHidden());
74   }
75 }
76