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/*
* Copyright (C) 2014 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.camera.settings;
import android.app.Activity;
import android.app.Application;
import android.content.Context;
import android.preference.SwitchPreference;
import android.util.AttributeSet;
import com.android.camera.app.CameraApp;
import com.android.camera.app.CameraServicesImpl;
/**
* This class allows Settings UIs to display and set boolean values controlled
* via the {@link SettingManager}. The Default {@link SwitchPreference} uses
* {@link android.content.SharedPreferences} as a backing store; since the
* {@link SettingManager} stores all settings as Strings we need to ensure we
* get and set boolean settings through the manager.
*/
public class ManagedSwitchPreference extends SwitchPreference {
public ManagedSwitchPreference(Context context) {
super(context);
}
public ManagedSwitchPreference(Context context, AttributeSet attrs) {
super(context, attrs);
}
public ManagedSwitchPreference(Context context, AttributeSet attrs, int defStyle) {
super(context, attrs, defStyle);
}
@Override
public boolean getPersistedBoolean(boolean defaultReturnValue) {
CameraApp cameraApp = getCameraApp();
if (cameraApp == null) {
// The context and app may not be initialized upon initial inflation of the
// preference from XML. In that case return the default value.
return defaultReturnValue;
}
SettingsManager settingsManager = CameraServicesImpl.instance().getSettingsManager();
if (settingsManager != null) {
return settingsManager.getBoolean(SettingsManager.SCOPE_GLOBAL, getKey());
} else {
// If the SettingsManager is for some reason not initialized,
// perhaps triggered by a monkey, return default value.
return defaultReturnValue;
}
}
@Override
public boolean persistBoolean(boolean value) {
CameraApp cameraApp = getCameraApp();
if (cameraApp == null) {
// The context may not be initialized upon initial inflation of the
// preference from XML. In that case return false to note the value won't
// be persisted.
return false;
}
SettingsManager settingsManager = CameraServicesImpl.instance().getSettingsManager();
if (settingsManager != null) {
settingsManager.set(SettingsManager.SCOPE_GLOBAL, getKey(), value);
return true;
} else {
// If the SettingsManager is for some reason not initialized,
// perhaps triggered by a monkey, return false to note the value
// was not persisted.
return false;
}
}
private CameraApp getCameraApp() {
Context context = getContext();
if (context instanceof Activity) {
Application application = ((Activity) context).getApplication();
if (application instanceof CameraApp) {
return (CameraApp) application;
}
}
return null;
}
}
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