1/*
2 * Copyright (C) 2010 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.quicksearchbox.preferences;
17
18import com.android.quicksearchbox.Corpora;
19import com.android.quicksearchbox.Corpus;
20import com.android.quicksearchbox.R;
21import com.android.quicksearchbox.SearchSettings;
22import com.android.quicksearchbox.SearchSettingsImpl;
23
24import android.content.Context;
25import android.content.res.Resources;
26import android.preference.Preference;
27import android.preference.Preference.OnPreferenceChangeListener;
28import android.preference.PreferenceGroup;
29import android.util.Log;
30
31/**
32 * Logic backing the searchable items activity or fragment.
33 */
34public class SearchableItemsController implements PreferenceController, OnPreferenceChangeListener {
35
36    private static final boolean DBG = false;
37    private static final String TAG = "QSB.SearchableItemsSettings";
38
39    public static final String SEARCH_CORPORA_PREF = "search_corpora";
40
41    private final SearchSettings mSearchSettings;
42    private final Corpora mCorpora;
43    private final Context mContext;
44
45    // References to the top-level preference objects
46    private PreferenceGroup mCorporaPreferences;
47
48    public SearchableItemsController(SearchSettings searchSettings, Corpora corpora,
49            Context context) {
50        mSearchSettings = searchSettings;
51        mCorpora = corpora;
52        mContext = context;
53    }
54
55    public void handlePreference(Preference corporaPreferences) {
56        mCorporaPreferences = (PreferenceGroup) corporaPreferences;
57        populateSourcePreference();
58    }
59
60    public String getCorporaPreferenceKey() {
61        return SEARCH_CORPORA_PREF;
62    }
63
64    private SearchSettings getSettings() {
65        return mSearchSettings;
66    }
67
68    private Corpora getCorpora() {
69        return mCorpora;
70    }
71
72    private Context getContext() {
73        return mContext;
74    }
75
76    private Resources getResources() {
77        return getContext().getResources();
78    }
79
80
81    /**
82     * Fills the suggestion source list.
83     */
84    private void populateSourcePreference() {
85        boolean includeNonAllCorpora =
86                getResources().getBoolean(R.bool.show_non_all_corpora_in_settings);
87        mCorporaPreferences.setOrderingAsAdded(false);
88        for (Corpus corpus : getCorpora().getAllCorpora()) {
89            if (includeNonAllCorpora || corpus.includeInAll()) {
90                Preference pref = createCorpusPreference(corpus);
91                if (pref != null) {
92                    if (DBG) Log.d(TAG, "Adding corpus: " + corpus);
93                    mCorporaPreferences.addPreference(pref);
94                }
95            }
96        }
97    }
98
99    /**
100     * Adds a suggestion source to the list of suggestion source checkbox preferences.
101     */
102    private Preference createCorpusPreference(Corpus corpus) {
103        SearchableItemPreference sourcePref = new SearchableItemPreference(getContext());
104        sourcePref.setKey(SearchSettingsImpl.getCorpusEnabledPreference(corpus));
105        // Put web corpus first. The rest are alphabetical.
106        if (corpus.isWebCorpus()) {
107            sourcePref.setOrder(0);
108        }
109        sourcePref.setDefaultValue(corpus.isCorpusDefaultEnabled());
110        sourcePref.setOnPreferenceChangeListener(this);
111        CharSequence label = corpus.getLabel();
112        sourcePref.setTitle(label);
113        CharSequence description = corpus.getSettingsDescription();
114        sourcePref.setSummaryOn(description);
115        sourcePref.setSummaryOff(description);
116        sourcePref.setIcon(corpus.getCorpusIcon());
117        return sourcePref;
118    }
119
120    public boolean onPreferenceChange(Preference preference, Object newValue) {
121        getSettings().broadcastSettingsChanged();
122        return true;
123    }
124
125    public void onCreateComplete() {
126    }
127
128    public void onStop() {
129    }
130
131    public void onDestroy() {
132    }
133
134    public void onResume() {
135    }
136
137}
138