1 /* -*- Mode: Java; c-basic-offset: 4; tab-width: 4; indent-tabs-mode: nil; -*-
2  * This Source Code Form is subject to the terms of the Mozilla Public
3  * License, v. 2.0. If a copy of the MPL was not distributed with this
4  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
5 
6 package org.mozilla.gecko.preferences;
7 
8 import java.util.HashSet;
9 import java.util.Set;
10 
11 import org.mozilla.gecko.GeckoSharedPrefs;
12 import org.mozilla.gecko.util.PrefUtils;
13 
14 import android.content.Context;
15 import android.content.SharedPreferences;
16 import android.preference.Preference;
17 
18 public class ClearOnShutdownPref implements GeckoPreferences.PrefHandler {
19     public static final String PREF = GeckoPreferences.NON_PREF_PREFIX + "history.clear_on_exit";
20 
21     @Override
setupPref(Context context, Preference pref)22     public boolean setupPref(Context context, Preference pref) {
23         // The pref is initialized asynchronously. Read the pref explicitly
24         // here to make sure we have the data.
25         final SharedPreferences prefs = GeckoSharedPrefs.forProfile(context);
26         final Set<String> clearItems = PrefUtils.getStringSet(prefs, PREF, new HashSet<String>());
27         ((ListCheckboxPreference) pref).setChecked(clearItems.size() > 0);
28         return true;
29     }
30 
31     @Override
32     @SuppressWarnings("unchecked")
onChange(Context context, Preference pref, Object newValue)33     public void onChange(Context context, Preference pref, Object newValue) {
34         final Set<String> vals = (Set<String>) newValue;
35         ((ListCheckboxPreference) pref).setChecked(vals.size() > 0);
36     }
37 }
38