1/*
2 * Copyright (C) 2011 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.contacts.list;
17
18import com.google.android.collect.Lists;
19
20import android.content.Context;
21import android.content.CursorLoader;
22import android.database.Cursor;
23import android.database.MatrixCursor;
24import android.database.MergeCursor;
25import android.os.Bundle;
26import android.provider.ContactsContract.Profile;
27
28import java.util.List;
29
30/**
31 * A loader for use in the default contact list, which will also query for the user's profile
32 * if configured to do so.
33 */
34public class ProfileAndContactsLoader extends CursorLoader {
35
36    private boolean mLoadProfile;
37    private String[] mProjection;
38
39    public ProfileAndContactsLoader(Context context) {
40        super(context);
41    }
42
43    public void setLoadProfile(boolean flag) {
44        mLoadProfile = flag;
45    }
46
47    public void setProjection(String[] projection) {
48        super.setProjection(projection);
49        mProjection = projection;
50    }
51
52    @Override
53    public Cursor loadInBackground() {
54        // First load the profile, if enabled.
55        List<Cursor> cursors = Lists.newArrayList();
56        if (mLoadProfile) {
57            cursors.add(loadProfile());
58        }
59        final Cursor contactsCursor = super.loadInBackground();
60        cursors.add(contactsCursor);
61        return new MergeCursor(cursors.toArray(new Cursor[cursors.size()])) {
62            @Override
63            public Bundle getExtras() {
64                // Need to get the extras from the contacts cursor.
65                return contactsCursor.getExtras();
66            }
67        };
68    }
69
70    /**
71     * Loads the profile into a MatrixCursor.
72     */
73    private MatrixCursor loadProfile() {
74        Cursor cursor = getContext().getContentResolver().query(Profile.CONTENT_URI, mProjection,
75                null, null, null);
76        try {
77            MatrixCursor matrix = new MatrixCursor(mProjection);
78            Object[] row = new Object[mProjection.length];
79            while (cursor.moveToNext()) {
80                for (int i = 0; i < row.length; i++) {
81                    row[i] = cursor.getString(i);
82                }
83                matrix.addRow(row);
84            }
85            return matrix;
86        } finally {
87            cursor.close();
88        }
89    }
90}
91