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      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  */
     16 package com.android.quicksearchbox.preferences;
     17 
     18 import com.android.quicksearchbox.Corpora;
     19 import com.android.quicksearchbox.Corpus;
     20 import com.android.quicksearchbox.R;
     21 import com.android.quicksearchbox.SearchSettings;
     22 import com.android.quicksearchbox.SearchSettingsImpl;
     23 
     24 import android.content.Context;
     25 import android.content.res.Resources;
     26 import android.preference.Preference;
     27 import android.preference.Preference.OnPreferenceChangeListener;
     28 import android.preference.PreferenceGroup;
     29 import android.util.Log;
     30 
     31 /**
     32  * Logic backing the searchable items activity or fragment.
     33  */
     34 public 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