QsbApplication.java revision 185bb2e3881452c084fde44d9bee657f65881b0e 
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 com.android.quicksearchbox.ui.SuggestionViewFactory;
20import com.android.quicksearchbox.ui.SuggestionViewInflater;
21
22import android.app.Application;
23import android.os.Handler;
24import android.os.Looper;
25
26import java.util.concurrent.ThreadFactory;
27
28public class QsbApplication extends Application {
29
30    private Config mConfig;
31    private Sources mSources;
32    private ShortcutRepository mShortcutRepository;
33    private SourceTaskExecutor mSourceTaskExecutor;
34    private SuggestionsProvider mSuggestionsProvider;
35    private SuggestionViewFactory mSuggestionViewFactory;
36
37    @Override
38    public void onTerminate() {
39        close();
40        super.onTerminate();
41    }
42
43    protected void close() {
44        if (mSources != null) {
45            mSources.close();
46            mSources = null;
47        }
48        if (mShortcutRepository != null) {
49            mShortcutRepository.close();
50            mShortcutRepository = null;
51        }
52        if (mSourceTaskExecutor != null) {
53            mSourceTaskExecutor.close();
54            mSourceTaskExecutor = null;
55        }
56        if (mSuggestionsProvider != null) {
57            mSuggestionsProvider.close();
58            mSuggestionsProvider = null;
59        }
60    }
61
62    public Config getConfig() {
63        if (mConfig == null) {
64            mConfig = createConfig();
65        }
66        return mConfig;
67    }
68
69    protected Config createConfig() {
70        return new Config(this);
71    }
72
73    public SourceLookup getSources() {
74        if (mSources == null) {
75            mSources = createSources();
76        }
77        return mSources;
78    }
79
80    protected Sources createSources() {
81        Sources sources = new Sources(this, getConfig());
82        sources.load();
83        return sources;
84    }
85
86    public ShortcutRepository getShortcutRepository() {
87        if (mShortcutRepository == null) {
88            mShortcutRepository = createShortcutRepository();
89        }
90        return mShortcutRepository;
91    }
92
93    protected ShortcutRepository createShortcutRepository() {
94        return ShortcutRepositoryImplLog.create(this, getConfig(), getSources());
95    }
96
97    public SourceTaskExecutor getSourceTaskExecutor() {
98        if (mSourceTaskExecutor == null) {
99            mSourceTaskExecutor = createSourceTaskExecutor();
100        }
101        return mSourceTaskExecutor;
102    }
103
104    protected SourceTaskExecutor createSourceTaskExecutor() {
105        Config config = getConfig();
106        ThreadFactory queryThreadFactory =
107            new QueryThreadFactory(config.getQueryThreadPriority());
108        return new DelayingSourceTaskExecutor(config, queryThreadFactory);
109    }
110
111    public SuggestionsProvider getSuggestionsProvider() {
112        if (mSuggestionsProvider == null) {
113            mSuggestionsProvider = createSuggestionsProvider();
114        }
115        return mSuggestionsProvider;
116    }
117
118    protected SuggestionsProvider createSuggestionsProvider() {
119        Handler uiThread = new Handler(Looper.myLooper());
120        Promoter promoter =  new ShortcutPromoter(new RoundRobinPromoter());
121        GlobalSuggestionsProvider provider = new GlobalSuggestionsProvider(getConfig(),
122                getSources(),
123                getSourceTaskExecutor(),
124                uiThread,
125                promoter,
126                getShortcutRepository());
127        return provider;
128    }
129
130    public SuggestionViewFactory getSuggestionViewFactory() {
131        if (mSuggestionViewFactory == null) {
132            mSuggestionViewFactory = createSuggestionViewFactory();
133        }
134        return mSuggestionViewFactory;
135    }
136
137    protected SuggestionViewFactory createSuggestionViewFactory() {
138        return new SuggestionViewInflater(this);
139    }
140
141}
142