src/com/android/settings/development/CameraHalHdrplusPreferenceController.java

   1 /*
   2  * Copyright (C) 2017 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.development;
  18
  19 import android.content.Context;
  20 import android.os.SystemProperties;
  21 import android.support.v14.preference.SwitchPreference;
  22 import android.support.v7.preference.Preference;
  23 import android.support.v7.preference.PreferenceScreen;
  24 import android.widget.Toast;
  25
  26 import com.android.internal.annotations.VisibleForTesting;
  27 import com.android.settings.R;
  28 import com.android.settings.core.PreferenceControllerMixin;
  29 import com.android.settingslib.core.AbstractPreferenceController;
  30
  31 public class CameraHalHdrplusPreferenceController extends AbstractPreferenceController
  32         implements PreferenceControllerMixin {
  33
  34     private static final String KEY_CAMERA_HAL_HDRPLUS_SWITCH = "camera_hal_hdrplus_switch";
  35     @VisibleForTesting
  36     static final String BUILD_TYPE = "ro.build.type";
  37     @VisibleForTesting
  38     static final String PROPERTY_CAMERA_HAL_HDRPLUS = "persist.camera.hdrplus.enable";
  39     @VisibleForTesting
  40     static final String ENABLED = "1";
  41     @VisibleForTesting
  42     static final String DISABLED = "0";
  43
  44     private SwitchPreference mPreference;
  45
  46     public CameraHalHdrplusPreferenceController(Context context) {
  47         super(context);
  48     }
  49
  50     @Override
  51     public void displayPreference(PreferenceScreen screen) {
  52         super.displayPreference(screen);
  53         if (isAvailable()) {
  54             mPreference = (SwitchPreference) screen.findPreference(KEY_CAMERA_HAL_HDRPLUS_SWITCH);
  55             mPreference.setChecked(isHalHdrplusEnabled());
  56         }
  57     }
  58
  59     @Override
  60     public String getPreferenceKey() {
  61         return KEY_CAMERA_HAL_HDRPLUS_SWITCH;
  62     }
  63
  64     @Override
  65     public boolean isAvailable() {
  66         return mContext.getResources().getBoolean(R.bool.config_show_camera_hal_hdrplus) &&
  67                (SystemProperties.get(BUILD_TYPE).equals("userdebug") ||
  68                 SystemProperties.get(BUILD_TYPE).equals("eng"));
  69     }
  70
  71     @Override
  72     public void updateState(Preference preference) {
  73         updatePreference();
  74     }
  75
  76     @Override
  77     public boolean handlePreferenceTreeClick(Preference preference) {
  78         if (KEY_CAMERA_HAL_HDRPLUS_SWITCH.equals(preference.getKey())) {
  79             final SwitchPreference switchPreference = (SwitchPreference)preference;
  80             SystemProperties.set(PROPERTY_CAMERA_HAL_HDRPLUS,
  81                     switchPreference.isChecked() ? ENABLED : DISABLED);
  82             Toast.makeText(mContext, R.string.camera_hal_hdrplus_toast,
  83                     Toast.LENGTH_LONG).show();
  84             return true;
  85         }
  86         return false;
  87     }
  88
  89     public void enablePreference(boolean enabled) {
  90         if (isAvailable()) {
  91             mPreference.setEnabled(enabled);
  92         }
  93     }
  94
  95     public boolean updatePreference() {
  96         if (!isAvailable()) {
  97             return false;
  98         }
  99         final boolean enabled = isHalHdrplusEnabled();
 100         mPreference.setChecked(enabled);
 101         return enabled;
 102     }
 103
 104     private boolean isHalHdrplusEnabled() {
 105         return SystemProperties.getBoolean(PROPERTY_CAMERA_HAL_HDRPLUS, false);
 106     }
 107 }