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      1 /*
      2  * Copyright (C) 2014 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 android.app.stubs;
     18 
     19 import android.app.Activity;
     20 import android.app.Fragment;
     21 import android.content.Context;
     22 import android.content.Intent;
     23 import android.os.Bundle;
     24 import android.transition.Transition;
     25 import android.transition.Transition.TransitionListener;
     26 import android.transition.TransitionInflater;
     27 import android.view.LayoutInflater;
     28 import android.view.View;
     29 import android.view.ViewGroup;
     30 import android.view.WindowManager;
     31 
     32 /**
     33  * A simple activity used for Fragment Transitions
     34  */
     35 public class FragmentTestActivity extends Activity {
     36     @Override
     37     public void onCreate(Bundle icicle) {
     38         super.onCreate(icicle);
     39         setContentView(R.layout.activity_content);
     40         // Work around problems running while on lock screen
     41         getWindow().addFlags(WindowManager.LayoutParams.FLAG_DISMISS_KEYGUARD |
     42                 WindowManager.LayoutParams.FLAG_TURN_SCREEN_ON |
     43                 WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON);
     44     }
     45 
     46     public static class TestFragment extends Fragment {
     47         public static final int ENTER = 0;
     48         public static final int RETURN = 1;
     49         public static final int EXIT = 2;
     50         public static final int REENTER = 3;
     51         public static final int SHARED_ELEMENT_ENTER = 4;
     52         public static final int SHARED_ELEMENT_RETURN = 5;
     53         private static final int TRANSITION_COUNT = 6;
     54 
     55         private static final String LAYOUT_ID = "layoutId";
     56         private static final String TRANSITION_KEY = "transition_";
     57         private int mLayoutId = R.layout.fragment_start;
     58         private final int[] mTransitionIds = new int[] {
     59                 android.R.transition.explode,
     60                 android.R.transition.explode,
     61                 android.R.transition.fade,
     62                 android.R.transition.fade,
     63                 android.R.transition.move,
     64                 android.R.transition.move,
     65         };
     66         private final TransitionCalledListener[] mListeners =
     67                 new TransitionCalledListener[TRANSITION_COUNT];
     68         private OnTransitionListener mOnTransitionListener;
     69 
     70         public TestFragment() {
     71             for (int i = 0; i < TRANSITION_COUNT; i++) {
     72                 mListeners[i] = new TransitionCalledListener();
     73             }
     74         }
     75 
     76         public TestFragment(int layoutId) {
     77             this();
     78             mLayoutId = layoutId;
     79         }
     80 
     81         public void clearTransitions() {
     82             for (int i = 0; i < TRANSITION_COUNT; i++) {
     83                 mTransitionIds[i] = 0;
     84             }
     85         }
     86 
     87         public void clearNotifications() {
     88             for (int i = 0; i < TRANSITION_COUNT; i++) {
     89                 mListeners[i].transitionStarted = false;
     90                 mListeners[i].transitionEnded = false;
     91             }
     92         }
     93 
     94         @Override
     95         public void onCreate(Bundle savedInstanceState) {
     96             super.onCreate(savedInstanceState);
     97             if (savedInstanceState != null) {
     98                 mLayoutId = savedInstanceState.getInt(LAYOUT_ID, mLayoutId);
     99                 for (int i = 0; i < TRANSITION_COUNT; i++) {
    100                     String key = TRANSITION_KEY + i;
    101                     mTransitionIds[i] = savedInstanceState.getInt(key, mTransitionIds[i]);
    102                 }
    103             }
    104         }
    105 
    106         @Override
    107         public void onSaveInstanceState(Bundle outState) {
    108             super.onSaveInstanceState(outState);
    109             outState.putInt(LAYOUT_ID, mLayoutId);
    110             for (int i = 0; i < TRANSITION_COUNT; i++) {
    111                 String key = TRANSITION_KEY + i;
    112                 outState.putInt(key, mTransitionIds[i]);
    113             }
    114         }
    115 
    116         @Override
    117         public View onCreateView(LayoutInflater inflater, ViewGroup container,
    118                 Bundle savedInstanceState) {
    119             return inflater.inflate(mLayoutId, container, false);
    120         }
    121 
    122         @Override
    123         public void onAttach(Context context) {
    124             super.onAttach(context);
    125             setEnterTransition(loadTransition(ENTER));
    126             setReenterTransition(loadTransition(REENTER));
    127             setExitTransition(loadTransition(EXIT));
    128             setReturnTransition(loadTransition(RETURN));
    129             setSharedElementEnterTransition(loadTransition(SHARED_ELEMENT_ENTER));
    130             setSharedElementReturnTransition(loadTransition(SHARED_ELEMENT_RETURN));
    131         }
    132 
    133         public void setOnTransitionListener(OnTransitionListener listener) {
    134             mOnTransitionListener = listener;
    135         }
    136 
    137         public boolean wasStartCalled(int transitionKey) {
    138             return mListeners[transitionKey].transitionStarted;
    139         }
    140 
    141         public boolean wasEndCalled(int transitionKey) {
    142             return mListeners[transitionKey].transitionEnded;
    143         }
    144 
    145         private Transition loadTransition(int key) {
    146             final int id = mTransitionIds[key];
    147             if (id == 0) {
    148                 return null;
    149             }
    150             Transition transition = TransitionInflater.from(getActivity()).inflateTransition(id);
    151             transition.addListener(mListeners[key]);
    152             return transition;
    153         }
    154 
    155         private void notifyTransition() {
    156             if (mOnTransitionListener != null) {
    157                 mOnTransitionListener.onTransition(this);
    158             }
    159         }
    160 
    161         private class TransitionCalledListener implements TransitionListener {
    162             public boolean transitionStarted;
    163             public boolean transitionEnded;
    164 
    165             public TransitionCalledListener() {
    166             }
    167 
    168             @Override
    169             public void onTransitionStart(Transition transition) {
    170                 transitionStarted = true;
    171                 notifyTransition();
    172             }
    173 
    174             @Override
    175             public void onTransitionEnd(Transition transition) {
    176                 transitionEnded = true;
    177                 notifyTransition();
    178             }
    179 
    180             @Override
    181             public void onTransitionCancel(Transition transition) {
    182             }
    183 
    184             @Override
    185             public void onTransitionPause(Transition transition) {
    186             }
    187 
    188             @Override
    189             public void onTransitionResume(Transition transition) {
    190             }
    191         }
    192     }
    193 
    194     public interface OnTransitionListener {
    195         void onTransition(TestFragment fragment);
    196     }
    197 
    198 }
    199