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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.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
     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 
     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
     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
    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 
    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 }