QsbApplication.java revision 3e44ff1f2a204db3f479698cf0b3eab3d451dec2 
1/*
2 * Copyright (C) 2009 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.quicksearchbox;
18
19import android.app.Application;
20import android.os.Handler;
21import android.os.Looper;
22
23import java.util.concurrent.ThreadFactory;
24
25public class QsbApplication extends Application {
26
27    private Config mConfig;
28    private Sources mSources;
29    private ShortcutRepository mShortcutRepository;
30    private SourceTaskExecutor mSourceTaskExecutor;
31    private SuggestionsProvider mSuggestionsProvider;
32
33    @Override
34    public void onTerminate() {
35        close();
36        super.onTerminate();
37    }
38
39    protected void close() {
40        if (mSources != null) {
41            mSources.close();
42            mSources = null;
43        }
44        if (mShortcutRepository != null) {
45            mShortcutRepository.close();
46            mShortcutRepository = null;
47        }
48        if (mSourceTaskExecutor != null) {
49            mSourceTaskExecutor.close();
50            mSourceTaskExecutor = null;
51        }
52        if (mSuggestionsProvider != null) {
53            mSuggestionsProvider.close();
54            mSuggestionsProvider = null;
55        }
56    }
57
58    public Config getConfig() {
59        if (mConfig == null) {
60            mConfig = createConfig();
61        }
62        return mConfig;
63    }
64
65    protected Config createConfig() {
66        return new Config(this);
67    }
68
69    public SourceLookup getSources() {
70        if (mSources == null) {
71            mSources = createSources();
72        }
73        return mSources;
74    }
75
76    protected Sources createSources() {
77        Sources sources = new Sources(this, getConfig());
78        sources.load();
79        return sources;
80    }
81
82    public ShortcutRepository getShortcutRepository() {
83        if (mShortcutRepository == null) {
84            mShortcutRepository = createShortcutRepository();
85        }
86        return mShortcutRepository;
87    }
88
89    protected ShortcutRepository createShortcutRepository() {
90        return ShortcutRepositoryImplLog.create(this, getConfig(), getSources());
91    }
92
93    public SourceTaskExecutor getSourceTaskExecutor() {
94        if (mSourceTaskExecutor == null) {
95            mSourceTaskExecutor = createSourceTaskExecutor();
96        }
97        return mSourceTaskExecutor;
98    }
99
100    protected SourceTaskExecutor createSourceTaskExecutor() {
101        Config config = getConfig();
102        ThreadFactory queryThreadFactory =
103            new QueryThreadFactory(config.getQueryThreadPriority());
104        return new DelayingSourceTaskExecutor(config, queryThreadFactory);
105    }
106
107    public SuggestionsProvider getSuggestionsProvider() {
108        if (mSuggestionsProvider == null) {
109            mSuggestionsProvider = createSuggestionsProvider();
110        }
111        return mSuggestionsProvider;
112    }
113
114    protected SuggestionsProvider createSuggestionsProvider() {
115        Handler uiThread = new Handler(Looper.myLooper());
116        Promoter promoter =  new ShortcutPromoter(new RoundRobinPromoter());
117        GlobalSuggestionsProvider provider = new GlobalSuggestionsProvider(getConfig(),
118                getSources(),
119                getSourceTaskExecutor(),
120                uiThread,
121                promoter,
122                getShortcutRepository());
123        return provider;
124    }
125}
126