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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.provider.Settings;
     21 import android.support.v7.preference.ListPreference;
     22 import android.support.v7.preference.Preference;
     23 import android.view.View;
     24 import android.view.accessibility.AccessibilityManager;
     25 import android.widget.Switch;
     26 
     27 import com.android.internal.logging.nano.MetricsProto.MetricsEvent;
     28 import com.android.settings.R;
     29 import com.android.settings.widget.SwitchBar;
     30 
     31 public class ToggleDaltonizerPreferenceFragment extends ToggleFeaturePreferenceFragment
     32         implements Preference.OnPreferenceChangeListener, SwitchBar.OnSwitchChangeListener {
     33     private static final String ENABLED = Settings.Secure.ACCESSIBILITY_DISPLAY_DALTONIZER_ENABLED;
     34     private static final String TYPE = Settings.Secure.ACCESSIBILITY_DISPLAY_DALTONIZER;
     35     private static final int DEFAULT_TYPE = AccessibilityManager.DALTONIZER_CORRECT_DEUTERANOMALY;
     36 
     37     private ListPreference mType;
     38 
     39     @Override
     40     public int getMetricsCategory() {
     41         return MetricsEvent.ACCESSIBILITY_TOGGLE_DALTONIZER;
     42     }
     43 
     44     @Override
     45     public void onCreate(Bundle savedInstanceState) {
     46         super.onCreate(savedInstanceState);
     47 
     48         addPreferencesFromResource(R.xml.accessibility_daltonizer_settings);
     49 
     50         mType = (ListPreference) findPreference("type");
     51 
     52         initPreferences();
     53     }
     54 
     55     @Override
     56     protected void onPreferenceToggled(String preferenceKey, boolean enabled) {
     57         Settings.Secure.putInt(getContentResolver(), ENABLED, enabled ? 1 : 0);
     58     }
     59 
     60     @Override
     61     public boolean onPreferenceChange(Preference preference, Object newValue) {
     62         if (preference == mType) {
     63             Settings.Secure.putInt(getContentResolver(), TYPE, Integer.parseInt((String) newValue));
     64             preference.setSummary("%s");
     65         }
     66 
     67         return true;
     68     }
     69 
     70     @Override
     71     public void onViewCreated(View view, Bundle savedInstanceState) {
     72         super.onViewCreated(view, savedInstanceState);
     73 
     74         setTitle(getString(R.string.accessibility_display_daltonizer_preference_title));
     75     }
     76 
     77     @Override
     78     protected void onInstallSwitchBarToggleSwitch() {
     79         super.onInstallSwitchBarToggleSwitch();
     80 
     81         mSwitchBar.setCheckedInternal(
     82                 Settings.Secure.getInt(getContentResolver(), ENABLED, 0) == 1);
     83         mSwitchBar.addOnSwitchChangeListener(this);
     84     }
     85 
     86     @Override
     87     protected void onRemoveSwitchBarToggleSwitch() {
     88         super.onRemoveSwitchBarToggleSwitch();
     89         mSwitchBar.removeOnSwitchChangeListener(this);
     90     }
     91 
     92     private void initPreferences() {
     93         final String value = Integer.toString(
     94                 Settings.Secure.getInt(getContentResolver(), TYPE, DEFAULT_TYPE));
     95         mType.setValue(value);
     96         mType.setOnPreferenceChangeListener(this);
     97         final int index = mType.findIndexOfValue(value);
     98         if (index < 0) {
     99             // We're using a mode controlled by developer preferences.
    100             mType.setSummary(getString(R.string.daltonizer_type_overridden,
    101                     getString(R.string.simulate_color_space)));
    102         }
    103     }
    104 
    105     @Override
    106     public void onSwitchChanged(Switch switchView, boolean isChecked) {
    107         onPreferenceToggled(mPreferenceKey, isChecked);
    108     }
    109 }
    110