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/*
* Copyright (C) 2020 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.systemui.demomode
import android.content.Context
import android.database.ContentObserver
import android.os.Handler
import android.os.Looper
import android.provider.Settings
/**
* Class to track the availability of [DemoMode]. Use this class to track the availability and
* on/off state for DemoMode
*
* This class works by wrapping a content observer for the relevant keys related to DemoMode
* availability and current on/off state, and triggering callbacks.
*/
abstract class DemoModeAvailabilityTracker(val context: Context) {
var isInDemoMode = false
var isDemoModeAvailable = false
init {
isInDemoMode = checkIsDemoModeOn()
isDemoModeAvailable = checkIsDemoModeAllowed()
}
fun startTracking() {
val resolver = context.contentResolver
resolver.registerContentObserver(
Settings.Global.getUriFor(DEMO_MODE_ALLOWED), false, allowedObserver)
resolver.registerContentObserver(
Settings.Global.getUriFor(DEMO_MODE_ON), false, onObserver)
}
fun stopTracking() {
val resolver = context.contentResolver
resolver.unregisterContentObserver(allowedObserver)
resolver.unregisterContentObserver(onObserver)
}
abstract fun onDemoModeAvailabilityChanged()
abstract fun onDemoModeStarted()
abstract fun onDemoModeFinished()
private fun checkIsDemoModeAllowed(): Boolean {
return Settings.Global
.getInt(context.contentResolver, DEMO_MODE_ALLOWED, 0) != 0
}
private fun checkIsDemoModeOn(): Boolean {
return Settings.Global.getInt(context.contentResolver, DEMO_MODE_ON, 0) != 0
}
private val allowedObserver = object : ContentObserver(Handler(Looper.getMainLooper())) {
override fun onChange(selfChange: Boolean) {
val allowed = checkIsDemoModeAllowed()
if (DEBUG) {
android.util.Log.d(TAG, "onChange: DEMO_MODE_ALLOWED changed: $allowed")
}
if (isDemoModeAvailable == allowed) {
return
}
isDemoModeAvailable = allowed
onDemoModeAvailabilityChanged()
}
}
private val onObserver = object : ContentObserver(Handler(Looper.getMainLooper())) {
override fun onChange(selfChange: Boolean) {
val on = checkIsDemoModeOn()
if (DEBUG) {
android.util.Log.d(TAG, "onChange: DEMO_MODE_ON changed: $on")
}
if (isInDemoMode == on) {
return
}
isInDemoMode = on
if (on) {
onDemoModeStarted()
} else {
onDemoModeFinished()
}
}
}
}
private const val TAG = "DemoModeAvailabilityTracker"
private const val DEMO_MODE_ALLOWED = "sysui_demo_allowed"
private const val DEMO_MODE_ON = "sysui_tuner_demo_on"
private const val DEBUG = false
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