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 */
16package com.android.transitiontests;
17
18import android.app.Activity;
19import android.content.Context;
20import android.os.Bundle;
21import android.view.View;
22import android.view.ViewTreeObserver;
23import android.transition.Fade;
24import android.transition.Scene;
25import android.widget.AdapterView;
26import android.widget.ArrayAdapter;
27import android.widget.LinearLayout;
28import android.widget.ListView;
29import android.widget.TextView;
30import android.transition.AutoTransition;
31import android.transition.ChangeBounds;
32import android.transition.Transition;
33import android.transition.TransitionSet;
34import android.transition.TransitionManager;
35
36import java.util.ArrayList;
37import java.util.HashMap;
38import java.util.List;
39
40public class ListViewAddRemove extends Activity {
41
42    final ArrayList<String> numList = new ArrayList<String>();
43
44    @Override
45    public void onCreate(Bundle savedInstanceState) {
46        super.onCreate(savedInstanceState);
47        setContentView(R.layout.list_view_add_remove);
48
49        final LinearLayout container = (LinearLayout) findViewById(R.id.container);
50
51        final ListView listview = (ListView) findViewById(R.id.listview);
52        for (int i = 0; i < 200; ++i) {
53            numList.add(Integer.toString(i));
54        }
55        final StableArrayAdapter adapter = new StableArrayAdapter(this,
56                android.R.layout.simple_list_item_1, numList);
57        listview.setAdapter(adapter);
58
59        final ViewTreeObserver observer = container.getViewTreeObserver();
60        observer.addOnGlobalLayoutListener(new ViewTreeObserver.OnGlobalLayoutListener() {
61            public void onGlobalLayout() {
62                System.out.println("-------------------------------------");
63                System.out.println("onLayoutListener: listview view tops: ");
64                for (int i = 0; i < listview.getChildCount(); ++i) {
65                    TextView view = (TextView) listview.getChildAt(i);
66                    System.out.println("    " + view.getText() + ": " + view.getTop());
67                }
68            }
69        });
70
71        final Scene mySceneChanger = new Scene(listview);
72
73        mySceneChanger.setEnterAction(new Runnable() {
74            @Override
75            public void run() {
76                numList.remove(mItemToDelete);
77                adapter.notifyDataSetChanged();
78            }
79        });
80        final Transition myTransition = new AutoTransition();
81        final TransitionSet noFadeIn = new TransitionSet().
82                setOrdering(TransitionSet.ORDERING_SEQUENTIAL);
83        Fade fadeIn = new Fade(Fade.IN);
84        fadeIn.setDuration(50);
85        noFadeIn.addTransition(new Fade(Fade.OUT)).addTransition(new ChangeBounds()).addTransition(fadeIn);
86
87        myTransition.addListener(new Transition.TransitionListenerAdapter() {
88            @Override
89            public void onTransitionStart(Transition transition) {
90                System.out.println("---------ListView Tops: Before--------");
91                for (int i = 0; i < listview.getChildCount(); ++i) {
92                    TextView view = (TextView) listview.getChildAt(i);
93                    int position = listview.getPositionForView(view);
94                }
95            }
96
97            @Override
98            public void onTransitionEnd(Transition transition) {
99                System.out.println("---------ListView Tops: After--------");
100                for (int i = 0; i < listview.getChildCount(); ++i) {
101                    TextView view = (TextView) listview.getChildAt(i);
102                    int position = listview.getPositionForView(view);
103                    if (view.hasTransientState()) {
104//                        view.setHasTransientState(false);
105                    }
106                }
107                myTransition.removeListener(this);
108            }
109        });
110
111        listview.setOnItemClickListener(new AdapterView.OnItemClickListener() {
112
113            @Override
114            public void onItemClick(AdapterView<?> parent, final View view, int position, long id) {
115                System.out.println("---------ListView Tops: OnClick--------");
116                String item = (String) parent.getItemAtPosition(position);
117                for (int i = 0; i < listview.getChildCount(); ++i) {
118                    TextView v = (TextView) listview.getChildAt(i);
119                    if (!item.equals(v.getText())) {
120//                        v.setHasTransientState(true);
121                    }
122                }
123//                listview.setHasTransientState(true);
124                mItemToDelete = item;
125//                numList.remove(item);
126                TransitionManager.go(mySceneChanger, noFadeIn);
127//                view.postDelayed(new Runnable() {
128//                    @Override
129//                    public void run() {
130//                        for (int i = 0; i < listview.getChildCount(); ++i) {
131//                            TextView v = (TextView) listview.getChildAt(i);
132//                            v.setHasTransientState(false);
133//                        }
134//                    }
135//                }, 200);
136            }
137
138        });
139    }
140
141    String mItemToDelete = null;
142
143    private class StableArrayAdapter extends ArrayAdapter<String> {
144
145        HashMap<String, Integer> mIdMap = new HashMap<String, Integer>();
146
147        public StableArrayAdapter(Context context, int textViewResourceId,
148                List<String> objects) {
149            super(context, textViewResourceId, objects);
150            for (int i = 0; i < objects.size(); ++i) {
151                mIdMap.put(objects.get(i), i);
152            }
153        }
154
155        @Override
156        public long getItemId(int position) {
157            String item = getItem(position);
158            return mIdMap.get(item);
159        }
160
161        @Override
162        public boolean hasStableIds() {
163            return true;
164        }
165
166    }
167}
168