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 */
16
17package com.android.contacts;
18
19import android.content.AsyncQueryHandler;
20import android.database.Cursor;
21import android.net.Uri;
22import android.provider.VoicemailContract.Status;
23import android.provider.VoicemailContract.Voicemails;
24import android.util.Log;
25
26import com.android.common.io.MoreCloseables;
27import com.android.contacts.voicemail.VoicemailStatusHelperImpl;
28
29/**
30 * Class used by {@link CallDetailActivity} to fire async content resolver queries.
31 */
32public class CallDetailActivityQueryHandler extends AsyncQueryHandler {
33    private static final String TAG = "CallDetail";
34    private static final int QUERY_VOICEMAIL_CONTENT_TOKEN = 101;
35    private static final int QUERY_VOICEMAIL_STATUS_TOKEN = 102;
36
37    private final String[] VOICEMAIL_CONTENT_PROJECTION = new String[] {
38        Voicemails.SOURCE_PACKAGE,
39        Voicemails.HAS_CONTENT
40    };
41    private static final int SOURCE_PACKAGE_COLUMN_INDEX = 0;
42    private static final int HAS_CONTENT_COLUMN_INDEX = 1;
43
44    private final CallDetailActivity mCallDetailActivity;
45
46    public CallDetailActivityQueryHandler(CallDetailActivity callDetailActivity) {
47        super(callDetailActivity.getContentResolver());
48        mCallDetailActivity = callDetailActivity;
49    }
50
51    /**
52     * Fires a query to update voicemail status for the given voicemail record. On completion of the
53     * query a call to {@link CallDetailActivity#updateVoicemailStatusMessage(Cursor)} is made.
54     * <p>
55     * if this is a voicemail record then it makes up to two asynchronous content resolver queries.
56     * The first one to fetch voicemail content details and check if the voicemail record has audio.
57     * If the voicemail record does not have an audio yet then it fires the second query to get the
58     * voicemail status of the associated source.
59     */
60    public void startVoicemailStatusQuery(Uri voicemailUri) {
61        startQuery(QUERY_VOICEMAIL_CONTENT_TOKEN, null, voicemailUri, VOICEMAIL_CONTENT_PROJECTION,
62                null, null, null);
63    }
64
65    @Override
66    protected synchronized void onQueryComplete(int token, Object cookie, Cursor cursor) {
67        try {
68            if (token == QUERY_VOICEMAIL_CONTENT_TOKEN) {
69                // Query voicemail status only if this voicemail record does not have audio.
70                if (moveToFirst(cursor) && hasNoAudio(cursor)) {
71                    startQuery(QUERY_VOICEMAIL_STATUS_TOKEN, null,
72                            Status.buildSourceUri(getSourcePackage(cursor)),
73                            VoicemailStatusHelperImpl.PROJECTION, null, null, null);
74                } else {
75                    // nothing to show in status
76                    mCallDetailActivity.updateVoicemailStatusMessage(null);
77                }
78            } else if (token == QUERY_VOICEMAIL_STATUS_TOKEN) {
79                mCallDetailActivity.updateVoicemailStatusMessage(cursor);
80            } else {
81                Log.w(TAG, "Unknown query completed: ignoring: " + token);
82            }
83        } finally {
84            MoreCloseables.closeQuietly(cursor);
85        }
86    }
87
88    /** Check that the cursor is non-null and can be moved to first. */
89    private boolean moveToFirst(Cursor cursor) {
90        if (cursor == null || !cursor.moveToFirst()) {
91            Log.e(TAG, "Cursor not valid, could not move to first");
92            return false;
93        }
94        return true;
95    }
96
97    private boolean hasNoAudio(Cursor voicemailCursor) {
98        return voicemailCursor.getInt(HAS_CONTENT_COLUMN_INDEX) == 0;
99    }
100
101    private String getSourcePackage(Cursor voicemailCursor) {
102        return voicemailCursor.getString(SOURCE_PACKAGE_COLUMN_INDEX);
103    }
104}
105