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
17package android.widget;
18
19import android.content.Context;
20import android.view.View;
21import android.view.ViewGroup;
22
23import java.util.ArrayList;
24
25/**
26 * @hide
27 */
28public class RemoteViewsListAdapter extends BaseAdapter {
29
30    private Context mContext;
31    private ArrayList<RemoteViews> mRemoteViewsList;
32    private ArrayList<Integer> mViewTypes = new ArrayList<Integer>();
33    private int mViewTypeCount;
34
35    public RemoteViewsListAdapter(Context context, ArrayList<RemoteViews> remoteViews,
36            int viewTypeCount) {
37        mContext = context;
38        mRemoteViewsList = remoteViews;
39        mViewTypeCount = viewTypeCount;
40        init();
41    }
42
43    public void setViewsList(ArrayList<RemoteViews> remoteViews) {
44        mRemoteViewsList = remoteViews;
45        init();
46        notifyDataSetChanged();
47    }
48
49    private void init() {
50        if (mRemoteViewsList == null) return;
51
52        mViewTypes.clear();
53        for (RemoteViews rv: mRemoteViewsList) {
54            if (!mViewTypes.contains(rv.getLayoutId())) {
55                mViewTypes.add(rv.getLayoutId());
56            }
57        }
58
59        if (mViewTypes.size() > mViewTypeCount || mViewTypeCount < 1) {
60            throw new RuntimeException("Invalid view type count -- view type count must be >= 1" +
61                    "and must be as large as the total number of distinct view types");
62        }
63    }
64
65    @Override
66    public int getCount() {
67        if (mRemoteViewsList != null) {
68            return mRemoteViewsList.size();
69        } else {
70            return 0;
71        }
72    }
73
74    @Override
75    public Object getItem(int position) {
76        return null;
77    }
78
79    @Override
80    public long getItemId(int position) {
81        return position;
82    }
83
84    @Override
85    public View getView(int position, View convertView, ViewGroup parent) {
86        if (position < getCount()) {
87            RemoteViews rv = mRemoteViewsList.get(position);
88            rv.setIsWidgetCollectionChild(true);
89            View v;
90            if (convertView != null && rv != null &&
91                    convertView.getId() == rv.getLayoutId()) {
92                v = convertView;
93                rv.reapply(mContext, v);
94            } else {
95                v = rv.apply(mContext, parent);
96            }
97            return v;
98        } else {
99            return null;
100        }
101    }
102
103    @Override
104    public int getItemViewType(int position) {
105        if (position < getCount()) {
106            int layoutId = mRemoteViewsList.get(position).getLayoutId();
107            return mViewTypes.indexOf(layoutId);
108        } else {
109            return 0;
110        }
111    }
112
113    public int getViewTypeCount() {
114        return mViewTypeCount;
115    }
116
117    @Override
118    public boolean hasStableIds() {
119        return false;
120    }
121}
122