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.browser.preferences;
18 
19 import com.android.browser.BrowserActivity;
20 import com.android.browser.PreferenceKeys;
21 import com.android.browser.R;
22 
23 import android.content.Intent;
24 import android.content.res.Resources;
25 import android.os.Bundle;
26 import android.preference.ListPreference;
27 import android.preference.Preference;
28 import android.preference.PreferenceFragment;
29 import android.preference.PreferenceScreen;
30 import android.util.Log;
31 import android.webkit.GeolocationPermissions;
32 import android.webkit.ValueCallback;
33 import android.webkit.WebStorage;
34 
35 import java.util.Map;
36 import java.util.Set;
37 
38 public class AdvancedPreferencesFragment extends PreferenceFragment
39         implements Preference.OnPreferenceChangeListener {
40 
41     @Override
onCreate(Bundle savedInstanceState)42     public void onCreate(Bundle savedInstanceState) {
43         super.onCreate(savedInstanceState);
44 
45         // Load the XML preferences file
46         addPreferencesFromResource(R.xml.advanced_preferences);
47 
48         PreferenceScreen websiteSettings = (PreferenceScreen) findPreference(
49                 PreferenceKeys.PREF_WEBSITE_SETTINGS);
50         websiteSettings.setFragment(WebsiteSettingsFragment.class.getName());
51 
52         Preference e = findPreference(PreferenceKeys.PREF_DEFAULT_ZOOM);
53         e.setOnPreferenceChangeListener(this);
54         e.setSummary(getVisualDefaultZoomName(
55                 getPreferenceScreen().getSharedPreferences()
56                 .getString(PreferenceKeys.PREF_DEFAULT_ZOOM, null)) );
57 
58         e = findPreference(PreferenceKeys.PREF_DEFAULT_TEXT_ENCODING);
59         e.setOnPreferenceChangeListener(this);
60 
61         e = findPreference(PreferenceKeys.PREF_RESET_DEFAULT_PREFERENCES);
62         e.setOnPreferenceChangeListener(this);
63 
64         e = findPreference(PreferenceKeys.PREF_SEARCH_ENGINE);
65         e.setOnPreferenceChangeListener(this);
66         updateListPreferenceSummary((ListPreference) e);
67 
68         e = findPreference(PreferenceKeys.PREF_PLUGIN_STATE);
69         e.setOnPreferenceChangeListener(this);
70         updateListPreferenceSummary((ListPreference) e);
71     }
72 
updateListPreferenceSummary(ListPreference e)73     void updateListPreferenceSummary(ListPreference e) {
74         e.setSummary(e.getEntry());
75     }
76 
77     /*
78      * We need to set the PreferenceScreen state in onResume(), as the number of
79      * origins with active features (WebStorage, Geolocation etc) could have
80      * changed after calling the WebsiteSettingsActivity.
81      */
82     @Override
onResume()83     public void onResume() {
84         super.onResume();
85         final PreferenceScreen websiteSettings = (PreferenceScreen) findPreference(
86                 PreferenceKeys.PREF_WEBSITE_SETTINGS);
87         websiteSettings.setEnabled(false);
88         WebStorage.getInstance().getOrigins(new ValueCallback<Map>() {
89             @Override
90             public void onReceiveValue(Map webStorageOrigins) {
91                 if ((webStorageOrigins != null) && !webStorageOrigins.isEmpty()) {
92                     websiteSettings.setEnabled(true);
93                 }
94             }
95         });
96         GeolocationPermissions.getInstance().getOrigins(new ValueCallback<Set<String> >() {
97             @Override
98             public void onReceiveValue(Set<String> geolocationOrigins) {
99                 if ((geolocationOrigins != null) && !geolocationOrigins.isEmpty()) {
100                     websiteSettings.setEnabled(true);
101                 }
102             }
103         });
104     }
105 
106     @Override
onPreferenceChange(Preference pref, Object objValue)107     public boolean onPreferenceChange(Preference pref, Object objValue) {
108         if (getActivity() == null) {
109             // We aren't attached, so don't accept preferences changes from the
110             // invisible UI.
111             Log.w("PageContentPreferencesFragment", "onPreferenceChange called from detached fragment!");
112             return false;
113         }
114 
115         if (pref.getKey().equals(PreferenceKeys.PREF_DEFAULT_ZOOM)) {
116             pref.setSummary(getVisualDefaultZoomName((String) objValue));
117             return true;
118         } else if (pref.getKey().equals(PreferenceKeys.PREF_DEFAULT_TEXT_ENCODING)) {
119             pref.setSummary((String) objValue);
120             return true;
121         } else if (pref.getKey().equals(PreferenceKeys.PREF_RESET_DEFAULT_PREFERENCES)) {
122             Boolean value = (Boolean) objValue;
123             if (value.booleanValue() == true) {
124                 startActivity(new Intent(BrowserActivity.ACTION_RESTART, null,
125                         getActivity(), BrowserActivity.class));
126                 return true;
127             }
128         } else if (pref.getKey().equals(PreferenceKeys.PREF_PLUGIN_STATE)
129                 || pref.getKey().equals(PreferenceKeys.PREF_SEARCH_ENGINE)) {
130             ListPreference lp = (ListPreference) pref;
131             lp.setValue((String) objValue);
132             updateListPreferenceSummary(lp);
133             return false;
134         }
135         return false;
136     }
137 
getVisualDefaultZoomName(String enumName)138     private CharSequence getVisualDefaultZoomName(String enumName) {
139         Resources res = getActivity().getResources();
140         CharSequence[] visualNames = res.getTextArray(R.array.pref_default_zoom_choices);
141         CharSequence[] enumNames = res.getTextArray(R.array.pref_default_zoom_values);
142 
143         // Sanity check
144         if (visualNames.length != enumNames.length) {
145             return "";
146         }
147 
148         int length = enumNames.length;
149         for (int i = 0; i < length; i++) {
150             if (enumNames[i].equals(enumName)) {
151                 return visualNames[i];
152             }
153         }
154 
155         return "";
156     }
157 }