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      1 /*
      2  * Copyright (C) 2010 Google Inc.
      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.loaderapp.fragments;
     18 
     19 import com.android.loaderapp.CursorFactoryListAdapter;
     20 import com.android.loaderapp.R;
     21 import com.android.loaderapp.CursorFactoryListAdapter.ResourceViewFactory;
     22 import com.android.loaderapp.model.GroupsListLoader;
     23 
     24 import android.app.LoaderManagingFragment;
     25 import android.content.Loader;
     26 import android.database.Cursor;
     27 import android.database.MatrixCursor;
     28 import android.database.MergeCursor;
     29 import android.os.Bundle;
     30 import android.view.LayoutInflater;
     31 import android.view.View;
     32 import android.view.ViewGroup;
     33 import android.widget.AdapterView;
     34 import android.widget.ListView;
     35 import android.widget.AdapterView.OnItemClickListener;
     36 
     37 public class GroupsListFragment extends LoaderManagingFragment<Cursor>
     38         implements OnItemClickListener {
     39     private static final long GROUP_ID_ALL_CONTACTS = -1;
     40     private static final long GROUP_ID_FAVORITES = -2;
     41 
     42     private static final int LOADER_GROUPS = 0;
     43 
     44     Controller mController;
     45     ListView mList;
     46     CursorFactoryListAdapter mAdapter;
     47 
     48     public interface Controller {
     49         public void onAllContactsSelected();
     50         public void onFavoritesSelected();
     51         public void onGroupSelected(String name);
     52     }
     53 
     54     public void setController(Controller controller) {
     55         mController = controller;
     56     }
     57 
     58     @Override
     59     public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedState) {
     60         ListView list = (ListView) inflater.inflate(R.layout.contacts_list, container, false);
     61         list.setOnItemClickListener(this);
     62         mAdapter = new CursorFactoryListAdapter(getActivity(),
     63                 new ResourceViewFactory(R.layout.xlarge_list_item));
     64         list.setAdapter(mAdapter);
     65         mList = list;
     66         return list;
     67     }
     68 
     69     @Override
     70     public void onInitializeLoaders() {
     71         startLoading(LOADER_GROUPS, null);
     72     }
     73 
     74     @Override
     75     protected Loader onCreateLoader(int id, Bundle args) {
     76         switch (id) {
     77             case LOADER_GROUPS: {
     78                 return new GroupsListLoader(getActivity());
     79             }
     80         }
     81 
     82         return null;
     83     }
     84 
     85     @Override
     86     public void onLoadFinished(Loader loader, Cursor data) {
     87         switch (loader.getId()) {
     88             case LOADER_GROUPS: {
     89                 setData(data);
     90                 break;
     91             }
     92         }
     93     }
     94 
     95     private void setData(Cursor groups) {
     96         MatrixCursor psuedoGroups = new MatrixCursor(new String[] { "_id", "name" });
     97         psuedoGroups.newRow().add(-1).add("All Contacts");
     98         psuedoGroups.newRow().add(-2).add("Favorites");
     99         mAdapter.changeCursor(new MergeCursor(new Cursor[] { psuedoGroups, groups }));
    100     }
    101 
    102     public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
    103         if (id == GROUP_ID_ALL_CONTACTS) {
    104             mController.onAllContactsSelected();
    105         } else if (id == GROUP_ID_FAVORITES) {
    106             mController.onFavoritesSelected();
    107         } else {
    108             Cursor cursor = (Cursor) mAdapter.getItem(position);
    109             mController.onGroupSelected(cursor.getString(GroupsListLoader.COLUMN_TITLE));
    110         }
    111     }
    112 }