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      1 /*
      2  * Copyright (C) 2016 The Android Open Source Project
      3  *
      4  * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file
      5  * except in compliance with the License. You may obtain a copy of the License at
      6  *
      7  *      http://www.apache.org/licenses/LICENSE-2.0
      8  *
      9  * Unless required by applicable law or agreed to in writing, software distributed under the
     10  * License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
     11  * KIND, either express or implied. See the License for the specific language governing
     12  * permissions and limitations under the License.
     13  */
     14 package com.android.settings.display;
     15 
     16 import android.content.Context;
     17 import android.os.SystemProperties;
     18 import android.provider.Settings;
     19 import android.support.v14.preference.SwitchPreference;
     20 import android.support.v7.preference.Preference;
     21 
     22 import com.android.settings.core.PreferenceController;
     23 
     24 import static android.provider.Settings.Secure.CAMERA_GESTURE_DISABLED;
     25 
     26 public class CameraGesturePreferenceController extends PreferenceController implements
     27         Preference.OnPreferenceChangeListener {
     28 
     29     private static final String KEY_CAMERA_GESTURE = "camera_gesture";
     30 
     31     public CameraGesturePreferenceController(Context context) {
     32         super(context);
     33     }
     34 
     35     @Override
     36     public String getPreferenceKey() {
     37         return KEY_CAMERA_GESTURE;
     38     }
     39 
     40     @Override
     41     public void updateState(Preference preference) {
     42         int value = Settings.Secure.getInt(mContext.getContentResolver(),
     43                 CAMERA_GESTURE_DISABLED, 0);
     44         ((SwitchPreference) preference).setChecked(value == 0);
     45     }
     46 
     47     @Override
     48     public boolean isAvailable() {
     49         boolean configSet = mContext.getResources().getInteger(
     50                 com.android.internal.R.integer.config_cameraLaunchGestureSensorType) != -1;
     51         return configSet
     52                 && !SystemProperties.getBoolean("gesture.disable_camera_launch", false);
     53     }
     54 
     55     @Override
     56     public boolean onPreferenceChange(Preference preference, Object newValue) {
     57         boolean value = (Boolean) newValue;
     58         Settings.Secure.putInt(mContext.getContentResolver(), CAMERA_GESTURE_DISABLED,
     59                 value ? 0 : 1 /* Backwards because setting is for disabling */);
     60         return true;
     61     }
     62 }
     63