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      1 /*
      2  * Copyright (C) 2013 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.settings.accessibility;
     18 
     19 import android.os.Bundle;
     20 import android.preference.ListPreference;
     21 import android.preference.Preference;
     22 import android.provider.Settings;
     23 import android.view.View;
     24 import android.view.accessibility.AccessibilityManager;
     25 
     26 import android.widget.Switch;
     27 import com.android.settings.R;
     28 import com.android.settings.widget.SwitchBar;
     29 
     30 public class ToggleDaltonizerPreferenceFragment extends ToggleFeaturePreferenceFragment
     31         implements Preference.OnPreferenceChangeListener, SwitchBar.OnSwitchChangeListener {
     32     private static final String ENABLED = Settings.Secure.ACCESSIBILITY_DISPLAY_DALTONIZER_ENABLED;
     33     private static final String TYPE = Settings.Secure.ACCESSIBILITY_DISPLAY_DALTONIZER;
     34     private static final int DEFAULT_TYPE = AccessibilityManager.DALTONIZER_CORRECT_DEUTERANOMALY;
     35 
     36     private ListPreference mType;
     37 
     38     @Override
     39     public void onCreate(Bundle savedInstanceState) {
     40         super.onCreate(savedInstanceState);
     41 
     42         addPreferencesFromResource(R.xml.accessibility_daltonizer_settings);
     43 
     44         mType = (ListPreference) findPreference("type");
     45 
     46         initPreferences();
     47     }
     48 
     49     @Override
     50     protected void onPreferenceToggled(String preferenceKey, boolean enabled) {
     51         Settings.Secure.putInt(getContentResolver(), ENABLED, enabled ? 1 : 0);
     52     }
     53 
     54     @Override
     55     public boolean onPreferenceChange(Preference preference, Object newValue) {
     56         if (preference == mType) {
     57             Settings.Secure.putInt(getContentResolver(), TYPE, Integer.parseInt((String) newValue));
     58             preference.setSummary("%s");
     59         }
     60 
     61         return true;
     62     }
     63 
     64     @Override
     65     public void onViewCreated(View view, Bundle savedInstanceState) {
     66         super.onViewCreated(view, savedInstanceState);
     67 
     68         setTitle(getString(R.string.accessibility_display_daltonizer_preference_title));
     69     }
     70 
     71     @Override
     72     protected void onInstallSwitchBarToggleSwitch() {
     73         super.onInstallSwitchBarToggleSwitch();
     74 
     75         mSwitchBar.setCheckedInternal(
     76                 Settings.Secure.getInt(getContentResolver(), ENABLED, 0) == 1);
     77         mSwitchBar.addOnSwitchChangeListener(this);
     78     }
     79 
     80     @Override
     81     protected void onRemoveSwitchBarToggleSwitch() {
     82         super.onRemoveSwitchBarToggleSwitch();
     83         mSwitchBar.removeOnSwitchChangeListener(this);
     84     }
     85 
     86     private void initPreferences() {
     87         final String value = Integer.toString(
     88                 Settings.Secure.getInt(getContentResolver(), TYPE, DEFAULT_TYPE));
     89         mType.setValue(value);
     90         mType.setOnPreferenceChangeListener(this);
     91         final int index = mType.findIndexOfValue(value);
     92         if (index < 0) {
     93             // We're using a mode controlled by developer preferences.
     94             mType.setSummary(getString(R.string.daltonizer_type_overridden,
     95                     getString(R.string.simulate_color_space)));
     96         }
     97     }
     98 
     99     @Override
    100     public void onSwitchChanged(Switch switchView, boolean isChecked) {
    101         onPreferenceToggled(mPreferenceKey, isChecked);
    102     }
    103 }
    104