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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 
     17 package com.android.quicksearchbox;
     18 
     19 import com.android.quicksearchbox.ui.CorporaAdapter;
     20 import com.android.quicksearchbox.ui.CorpusViewFactory;
     21 
     22 import android.appwidget.AppWidgetManager;
     23 import android.content.Context;
     24 import android.content.Intent;
     25 import android.content.SharedPreferences;
     26 import android.os.Bundle;
     27 import android.util.Log;
     28 import android.view.View;
     29 import android.widget.AdapterView;
     30 import android.widget.ListAdapter;
     31 
     32 /**
     33  * The configuration screen for search widgets.
     34  */
     35 public class SearchWidgetConfigActivity extends ChoiceActivity {
     36     private static final boolean DBG = false;
     37     private static final String TAG = "QSB.SearchWidgetConfigActivity";
     38 
     39     private static final String PREFS_NAME = "SearchWidgetConfig";
     40     private static final String WIDGET_CORPUS_NAME_PREFIX = "widget_corpus_";
     41     private static final String WIDGET_CORPUS_SHOWING_HINT_PREFIX = "widget_showing_hint_";
     42 
     43     private CorporaAdapter mAdapter;
     44 
     45     private int mAppWidgetId;
     46 
     47     @Override
     48     public void onCreate(Bundle icicle) {
     49         super.onCreate(icicle);
     50 
     51         setHeading(R.string.search_widget);
     52         setOnItemClickListener(new SourceClickListener());
     53 
     54         Intent intent = getIntent();
     55         mAppWidgetId = intent.getIntExtra(AppWidgetManager.EXTRA_APPWIDGET_ID,
     56                 AppWidgetManager.INVALID_APPWIDGET_ID);
     57         if (mAppWidgetId == AppWidgetManager.INVALID_APPWIDGET_ID) {
     58             finish();
     59         }
     60 
     61         // If there is only All, or only All and one other corpus, there is no
     62         // point in asking the user to select a corpus.
     63         if (getCorpusRanker().getRankedCorpora().size() <= 1) {
     64             selectCorpus(null);
     65         }
     66     }
     67 
     68     @Override
     69     protected void onStart() {
     70         setAdapter(CorporaAdapter.createListAdapter(getViewFactory(), getCorpusRanker()));
     71         super.onStart();
     72     }
     73 
     74     @Override
     75     protected void onStop() {
     76         setAdapter(null);
     77         super.onStop();
     78     }
     79 
     80     @Override
     81     public void setAdapter(ListAdapter adapter) {
     82         if (adapter == mAdapter) return;
     83         if (mAdapter != null) mAdapter.close();
     84         mAdapter = (CorporaAdapter) adapter;
     85         super.setAdapter(adapter);
     86     }
     87 
     88     protected void selectCorpus(Corpus corpus) {
     89         setWidgetCorpusName(mAppWidgetId, corpus);
     90         SearchWidgetProvider.updateSearchWidgets(this);
     91 
     92         Intent result = new Intent();
     93         result.putExtra(AppWidgetManager.EXTRA_APPWIDGET_ID, mAppWidgetId);
     94         setResult(RESULT_OK, result);
     95         finish();
     96     }
     97 
     98     private static SharedPreferences getWidgetPreferences(Context context) {
     99         return context.getSharedPreferences(PREFS_NAME, MODE_PRIVATE);
    100     }
    101 
    102     private static String getCorpusNameKey(int appWidgetId) {
    103         return WIDGET_CORPUS_NAME_PREFIX + appWidgetId;
    104     }
    105 
    106     private static String getShowingHintKey(int appWidgetId) {
    107         return WIDGET_CORPUS_SHOWING_HINT_PREFIX + appWidgetId;
    108     }
    109 
    110     private void setWidgetCorpusName(int appWidgetId, Corpus corpus) {
    111         String corpusName = corpus == null ? null : corpus.getName();
    112         SharedPreferences.Editor prefs = getWidgetPreferences(this).edit();
    113         prefs.putString(getCorpusNameKey(appWidgetId), corpusName);
    114         prefs.commit();
    115     }
    116 
    117     public static String getWidgetCorpusName(Context context, int appWidgetId) {
    118         SharedPreferences prefs = getWidgetPreferences(context);
    119         return prefs.getString(getCorpusNameKey(appWidgetId), null);
    120     }
    121 
    122     public static void setWidgetShowingHint(Context context, int appWidgetId, boolean showing) {
    123         SharedPreferences.Editor prefs = getWidgetPreferences(context).edit();
    124         prefs.putBoolean(getShowingHintKey(appWidgetId), showing);
    125         boolean c = prefs.commit();
    126         if (DBG) Log.d(TAG, "Widget " + appWidgetId + " set showing hint " + showing + "("+c+")");
    127     }
    128 
    129     public static boolean getWidgetShowingHint(Context context, int appWidgetId) {
    130         SharedPreferences prefs = getWidgetPreferences(context);
    131         boolean r = prefs.getBoolean(getShowingHintKey(appWidgetId), false);
    132         if (DBG) Log.d(TAG, "Widget " + appWidgetId + " showing hint: " + r);
    133         return r;
    134     }
    135 
    136     private CorpusRanker getCorpusRanker() {
    137         return QsbApplication.get(this).getCorpusRanker();
    138     }
    139 
    140     private CorpusViewFactory getViewFactory() {
    141         return QsbApplication.get(this).getCorpusViewFactory();
    142     }
    143 
    144     private class SourceClickListener implements AdapterView.OnItemClickListener {
    145         public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
    146             Corpus corpus = (Corpus) parent.getItemAtPosition(position);
    147             selectCorpus(corpus);
    148         }
    149     }
    150 }
    151