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      1 /*
      2  * Copyright (C) 2008 Esmertec AG.
      3  * Copyright (C) 2008 The Android Open Source Project
      4  *
      5  * Licensed under the Apache License, Version 2.0 (the "License");
      6  * you may not use this file except in compliance with the License.
      7  * You may obtain a copy of the License at
      8  *
      9  *      http://www.apache.org/licenses/LICENSE-2.0
     10  *
     11  * Unless required by applicable law or agreed to in writing, software
     12  * distributed under the License is distributed on an "AS IS" BASIS,
     13  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     14  * See the License for the specific language governing permissions and
     15  * limitations under the License.
     16  */
     17 
     18 package com.android.im.app;
     19 
     20 import android.content.Context;
     21 import android.database.Cursor;
     22 import android.database.DatabaseUtils;
     23 import android.net.Uri;
     24 import android.util.AttributeSet;
     25 import android.view.View;
     26 import android.widget.AdapterView;
     27 import android.widget.Filter;
     28 import android.widget.LinearLayout;
     29 import android.widget.ListView;
     30 import android.widget.ResourceCursorAdapter;
     31 import android.widget.AdapterView.OnItemClickListener;
     32 
     33 import com.android.im.R;
     34 import com.android.im.provider.Imps;
     35 
     36 public class ContactListFilterView extends LinearLayout {
     37 
     38     private ListView mContactListView;
     39     private Filter mFilter;
     40     private ContactAdapter mContactAdapter;
     41 
     42     private Uri mUri;
     43 
     44     public ContactListFilterView(Context context, AttributeSet attrs) {
     45         super(context, attrs);
     46     }
     47 
     48     @Override
     49     protected void onFinishInflate() {
     50 
     51         mContactListView = (ListView) findViewById(R.id.filteredList);
     52         mContactListView.setTextFilterEnabled(true);
     53 
     54         mContactListView.setOnItemClickListener(new OnItemClickListener() {
     55             public void onItemClick(AdapterView parent, View view, int position,
     56                     long id) {
     57                 if (mContext instanceof ContactListActivity) {
     58                     ContactListActivity list = (ContactListActivity) mContext;
     59                     mContactListView.setSelection(position);
     60                     Cursor c = (Cursor) mContactListView.getSelectedItem();
     61                     list.mContactListView.startChat(c);
     62                     list.showContactListView();
     63                 }
     64             }
     65         });
     66     }
     67 
     68     public ListView getListView() {
     69         return mContactListView;
     70     }
     71 
     72     public Cursor getContactAtPosition(int position) {
     73         return (Cursor) mContactAdapter.getItem(position);
     74     }
     75 
     76     public void doFilter(Uri uri, String filterString) {
     77         if (!uri.equals(mUri)) {
     78             mUri = uri;
     79 
     80             Cursor contactCursor = runQuery(filterString);
     81 
     82             if (mContactAdapter == null) {
     83                 mContactAdapter = new ContactAdapter(mContext, contactCursor);
     84                 mFilter = mContactAdapter.getFilter();
     85                 mContactListView.setAdapter(mContactAdapter);
     86             } else {
     87                 mContactAdapter.changeCursor(contactCursor);
     88             }
     89         } else {
     90             mFilter.filter(filterString);
     91         }
     92     }
     93 
     94     Cursor runQuery(CharSequence constraint) {
     95         StringBuilder buf = new StringBuilder();
     96 
     97         // exclude chatting contact
     98         buf.append(Imps.Chats.LAST_MESSAGE_DATE);
     99         buf.append(" IS NULL");
    100 
    101         if (constraint != null) {
    102             buf.append(" AND ");
    103             buf.append(Imps.Contacts.NICKNAME);
    104             buf.append(" LIKE ");
    105             DatabaseUtils.appendValueToSql(buf, "%" + constraint + "%");
    106         }
    107 
    108         return mContext.getContentResolver().query(mUri, ContactView.CONTACT_PROJECTION,
    109                 buf == null ? null : buf.toString(), null, Imps.Contacts.DEFAULT_SORT_ORDER);
    110     }
    111 
    112     private class ContactAdapter extends ResourceCursorAdapter {
    113         private String mSearchString;
    114 
    115         public ContactAdapter(Context context, Cursor cursor) {
    116             super(context, R.layout.contact_view, cursor);
    117         }
    118 
    119         @Override
    120         public void bindView(View view, Context context, Cursor cursor) {
    121             ContactView v = (ContactView) view;
    122             v.setPadding(0, 0, 0, 0);
    123             v.bind(cursor, mSearchString, false);
    124         }
    125 
    126         @Override
    127         public Cursor runQueryOnBackgroundThread(CharSequence constraint) {
    128             if (constraint != null) {
    129                 mSearchString = constraint.toString();
    130             }
    131             return ContactListFilterView.this.runQuery(constraint);
    132         }
    133     }
    134 
    135 }
    136