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      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 
     17 package android.widget;
     18 
     19 import android.content.Context;
     20 import android.view.View;
     21 import android.view.ViewGroup;
     22 
     23 import java.util.ArrayList;
     24 
     25 /**
     26  * @hide
     27  */
     28 public 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