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      1 /*
      2  * Copyright (C) 2008 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;
     18 
     19 import android.content.Intent;
     20 import android.net.Uri;
     21 import android.os.Bundle;
     22 import android.preference.EditTextPreference;
     23 import android.preference.Preference;
     24 import android.preference.PreferenceActivity;
     25 import android.preference.PreferenceScreen;
     26 import android.webkit.GeolocationPermissions;
     27 import android.webkit.ValueCallback;
     28 import android.webkit.WebStorage;
     29 
     30 import java.util.Map;
     31 import java.util.Set;
     32 
     33 public class BrowserPreferencesPage extends PreferenceActivity
     34         implements Preference.OnPreferenceChangeListener {
     35 
     36     private String LOGTAG = "BrowserPreferencesPage";
     37     /* package */ static final String CURRENT_PAGE = "currentPage";
     38 
     39     @Override
     40     protected void onCreate(Bundle savedInstanceState) {
     41         super.onCreate(savedInstanceState);
     42 
     43         // Load the XML preferences file
     44         addPreferencesFromResource(R.xml.browser_preferences);
     45 
     46         Preference e = findPreference(BrowserSettings.PREF_HOMEPAGE);
     47         e.setOnPreferenceChangeListener(this);
     48         e.setSummary(getPreferenceScreen().getSharedPreferences()
     49                 .getString(BrowserSettings.PREF_HOMEPAGE, null));
     50         ((BrowserHomepagePreference) e).setCurrentPage(
     51                 getIntent().getStringExtra(CURRENT_PAGE));
     52 
     53         e = findPreference(BrowserSettings.PREF_EXTRAS_RESET_DEFAULTS);
     54         e.setOnPreferenceChangeListener(this);
     55 
     56         e = findPreference(BrowserSettings.PREF_TEXT_SIZE);
     57         e.setOnPreferenceChangeListener(this);
     58         e.setSummary(getVisualTextSizeName(
     59                 getPreferenceScreen().getSharedPreferences()
     60                 .getString(BrowserSettings.PREF_TEXT_SIZE, null)) );
     61 
     62         e = findPreference(BrowserSettings.PREF_DEFAULT_ZOOM);
     63         e.setOnPreferenceChangeListener(this);
     64         e.setSummary(getVisualDefaultZoomName(
     65                 getPreferenceScreen().getSharedPreferences()
     66                 .getString(BrowserSettings.PREF_DEFAULT_ZOOM, null)) );
     67 
     68         e = findPreference(BrowserSettings.PREF_DEFAULT_TEXT_ENCODING);
     69         e.setOnPreferenceChangeListener(this);
     70 
     71         e = findPreference(BrowserSettings.PREF_CLEAR_HISTORY);
     72         e.setOnPreferenceChangeListener(this);
     73 
     74         if (BrowserSettings.getInstance().showDebugSettings()) {
     75             addPreferencesFromResource(R.xml.debug_preferences);
     76         }
     77 
     78         PreferenceScreen websiteSettings = (PreferenceScreen)
     79             findPreference(BrowserSettings.PREF_WEBSITE_SETTINGS);
     80         Intent intent = new Intent(this, WebsiteSettingsActivity.class);
     81         websiteSettings.setIntent(intent);
     82     }
     83 
     84     /*
     85      * We need to set the PreferenceScreen state in onResume(), as the number of
     86      * origins with active features (WebStorage, Geolocation etc) could have
     87      * changed after calling the WebsiteSettingsActivity.
     88      */
     89     @Override
     90     protected void onResume() {
     91         super.onResume();
     92         final PreferenceScreen websiteSettings = (PreferenceScreen)
     93             findPreference(BrowserSettings.PREF_WEBSITE_SETTINGS);
     94         websiteSettings.setEnabled(false);
     95         WebStorage.getInstance().getOrigins(new ValueCallback<Map>() {
     96             public void onReceiveValue(Map webStorageOrigins) {
     97                 if ((webStorageOrigins != null) && !webStorageOrigins.isEmpty()) {
     98                     websiteSettings.setEnabled(true);
     99                 }
    100             }
    101         });
    102         GeolocationPermissions.getInstance().getOrigins(new ValueCallback<Set<String> >() {
    103             public void onReceiveValue(Set<String> geolocationOrigins) {
    104                 if ((geolocationOrigins != null) && !geolocationOrigins.isEmpty()) {
    105                     websiteSettings.setEnabled(true);
    106                 }
    107             }
    108         });
    109     }
    110 
    111     @Override
    112     protected void onPause() {
    113         super.onPause();
    114 
    115         // sync the shared preferences back to BrowserSettings
    116         BrowserSettings.getInstance().syncSharedPreferences(
    117                 getApplicationContext(),
    118                 getPreferenceScreen().getSharedPreferences());
    119     }
    120 
    121     public boolean onPreferenceChange(Preference pref, Object objValue) {
    122         if (pref.getKey().equals(BrowserSettings.PREF_EXTRAS_RESET_DEFAULTS)) {
    123             Boolean value = (Boolean) objValue;
    124             if (value.booleanValue() == true) {
    125                 finish();
    126             }
    127         } else if (pref.getKey().equals(BrowserSettings.PREF_HOMEPAGE)) {
    128             String value = (String) objValue;
    129             boolean needUpdate = value.indexOf(' ') != -1;
    130             if (needUpdate) {
    131                 value = value.trim().replace(" ", "%20");
    132             }
    133             if (value.length() != 0 && Uri.parse(value).getScheme() == null) {
    134                 value = "http://" + value;
    135                 needUpdate = true;
    136             }
    137             // Set the summary value.
    138             pref.setSummary(value);
    139             if (needUpdate) {
    140                 // Update through the EditText control as it has a cached copy
    141                 // of the string and it will handle persisting the value
    142                 ((EditTextPreference) pref).setText(value);
    143 
    144                 // as we update the value above, we need to return false
    145                 // here so that setText() is not called by EditTextPref
    146                 // with the old value.
    147                 return false;
    148             } else {
    149                 return true;
    150             }
    151         } else if (pref.getKey().equals(BrowserSettings.PREF_TEXT_SIZE)) {
    152             pref.setSummary(getVisualTextSizeName((String) objValue));
    153             return true;
    154         } else if (pref.getKey().equals(BrowserSettings.PREF_DEFAULT_ZOOM)) {
    155             pref.setSummary(getVisualDefaultZoomName((String) objValue));
    156             return true;
    157         } else if (pref.getKey().equals(
    158                 BrowserSettings.PREF_DEFAULT_TEXT_ENCODING)) {
    159             pref.setSummary((String) objValue);
    160             return true;
    161         } else if (pref.getKey().equals(BrowserSettings.PREF_CLEAR_HISTORY)
    162                 && ((Boolean) objValue).booleanValue() == true) {
    163             // Need to tell the browser to remove the parent/child relationship
    164             // between tabs
    165             setResult(RESULT_OK, (new Intent()).putExtra(Intent.EXTRA_TEXT,
    166                     pref.getKey()));
    167             return true;
    168         }
    169 
    170         return false;
    171     }
    172 
    173     private CharSequence getVisualTextSizeName(String enumName) {
    174         CharSequence[] visualNames = getResources().getTextArray(
    175                 R.array.pref_text_size_choices);
    176         CharSequence[] enumNames = getResources().getTextArray(
    177                 R.array.pref_text_size_values);
    178 
    179         // Sanity check
    180         if (visualNames.length != enumNames.length) {
    181             return "";
    182         }
    183 
    184         for (int i = 0; i < enumNames.length; i++) {
    185             if (enumNames[i].equals(enumName)) {
    186                 return visualNames[i];
    187             }
    188         }
    189 
    190         return "";
    191     }
    192 
    193     private CharSequence getVisualDefaultZoomName(String enumName) {
    194         CharSequence[] visualNames = getResources().getTextArray(
    195                 R.array.pref_default_zoom_choices);
    196         CharSequence[] enumNames = getResources().getTextArray(
    197                 R.array.pref_default_zoom_values);
    198 
    199         // Sanity check
    200         if (visualNames.length != enumNames.length) {
    201             return "";
    202         }
    203 
    204         for (int i = 0; i < enumNames.length; i++) {
    205             if (enumNames[i].equals(enumName)) {
    206                 return visualNames[i];
    207             }
    208         }
    209 
    210         return "";
    211     }
    212 }
    213