Settings: Add laser sensor preference

Add a switch for enabling/disabling the laser sensor within developer options. Test: Manual using setting app, RunSettingsRoboTests Bug: 64423712 Change-Id: I89a32dfa062fc62c4be096d2e026a32ce9b784ca
2017-09-06 16:47:08 +01:00
parent 3d1f6abd6f
commit 6530b21cc5
6 changed files with 299 additions and 0 deletions
--- a/src/com/android/settings/development/CameraLaserSensorPreferenceController.java
+++ b/src/com/android/settings/development/CameraLaserSensorPreferenceController.java
@@ -0,0 +1,104 @@
+/*
+ * Copyright (C) 2017 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.settings.development;
+
+import android.content.Context;
+import android.os.SystemProperties;
+import android.support.v14.preference.SwitchPreference;
+import android.support.v7.preference.Preference;
+import android.support.v7.preference.PreferenceScreen;
+import android.widget.Toast;
+
+import com.android.internal.annotations.VisibleForTesting;
+import com.android.settings.R;
+import com.android.settings.core.PreferenceControllerMixin;
+import com.android.settingslib.core.AbstractPreferenceController;
+
+public class CameraLaserSensorPreferenceController extends AbstractPreferenceController
+        implements PreferenceControllerMixin {
+
+    private static final String KEY_CAMERA_LASER_SENSOR_SWITCH = "camera_laser_sensor_switch";
+    @VisibleForTesting
+    static final String BUILD_TYPE = "ro.build.type";
+    @VisibleForTesting
+    static final String PROPERTY_CAMERA_LASER_SENSOR = "persist.camera.stats.disablehaf";
+    @VisibleForTesting
+    static final int ENABLED = 0;
+    @VisibleForTesting
+    static final int DISABLED = 2;
+
+    private SwitchPreference mPreference;
+
+    public CameraLaserSensorPreferenceController(Context context) {
+        super(context);
+    }
+
+    @Override
+    public void displayPreference(PreferenceScreen screen) {
+        super.displayPreference(screen);
+        mPreference = (SwitchPreference) screen.findPreference(KEY_CAMERA_LASER_SENSOR_SWITCH);
+        updatePreference();
+    }
+
+    @Override
+    public String getPreferenceKey() {
+        return KEY_CAMERA_LASER_SENSOR_SWITCH;
+    }
+
+    @Override
+    public boolean isAvailable() {
+        String buildType = SystemProperties.get(BUILD_TYPE);
+        return mContext.getResources().getBoolean(R.bool.config_show_camera_laser_sensor) &&
+               (buildType.equals("userdebug") || buildType.equals("eng"));
+    }
+
+    @Override
+    public void updateState(Preference preference) {
+        updatePreference();
+    }
+
+    @Override
+    public boolean handlePreferenceTreeClick(Preference preference) {
+        if (KEY_CAMERA_LASER_SENSOR_SWITCH.equals(preference.getKey())) {
+            final SwitchPreference switchPreference = (SwitchPreference)preference;
+            String value = Integer.toString(switchPreference.isChecked() ? ENABLED : DISABLED);
+            SystemProperties.set(PROPERTY_CAMERA_LASER_SENSOR, value);
+            return true;
+        }
+        return false;
+    }
+
+    public void enablePreference(boolean enabled) {
+        if (isAvailable()) {
+            mPreference.setEnabled(enabled);
+        }
+    }
+
+    public boolean updatePreference() {
+        if (!isAvailable()) {
+            return false;
+        }
+        final boolean enabled = isLaserSensorEnabled();
+        mPreference.setChecked(enabled);
+        return enabled;
+    }
+
+    private boolean isLaserSensorEnabled() {
+        String prop = SystemProperties.get(PROPERTY_CAMERA_LASER_SENSOR, Integer.toString(ENABLED));
+        return prop.equals(Integer.toString(ENABLED));
+    }
+}