BroadcastsObserver.kt
/*
* Copyright 2021 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 androidx.wear.watchface
import android.app.KeyguardManager
import android.content.Context
import android.content.Intent
import androidx.annotation.RestrictTo
import androidx.annotation.UiThread
import kotlinx.coroutines.CoroutineScope
import kotlinx.coroutines.Deferred
import kotlinx.coroutines.flow.MutableStateFlow
import kotlinx.coroutines.launch
@RestrictTo(RestrictTo.Scope.LIBRARY_GROUP)
public class BroadcastsObserver(
private val watchState: WatchState,
private val watchFaceHostApi: WatchFaceHostApi,
private val deferredWatchFaceImpl: Deferred<WatchFaceImpl>,
private val uiThreadCoroutineScope: CoroutineScope
) : BroadcastsReceiver.BroadcastEventObserver {
private var batteryLow: Boolean? = null
private var charging: Boolean? = null
private var sysUiHasSentWatchUiState: Boolean = false
internal companion object {
internal const val AMBIENT_ENABLED_PATH = "ambient_enabled"
}
override fun onActionTimeTick() {
// android.intent.action.TIME_TICK is sent by the system at the top of every minute
watchFaceHostApi.onActionTimeTick()
}
override fun onActionTimeZoneChanged() {
uiThreadCoroutineScope.launch { deferredWatchFaceImpl.await().onActionTimeZoneChanged() }
}
override fun onActionTimeChanged() {
uiThreadCoroutineScope.launch { deferredWatchFaceImpl.await().onActionTimeChanged() }
}
override fun onActionBatteryLow() {
batteryLow = true
if (charging == false) {
updateBatteryLowAndNotChargingStatus(true)
}
}
override fun onActionBatteryOkay() {
batteryLow = false
updateBatteryLowAndNotChargingStatus(false)
}
override fun onActionPowerConnected() {
charging = true
updateBatteryLowAndNotChargingStatus(false)
}
override fun onActionPowerDisconnected() {
charging = false
if (batteryLow == true) {
updateBatteryLowAndNotChargingStatus(true)
}
}
override fun onMockTime(intent: Intent) {
uiThreadCoroutineScope.launch { deferredWatchFaceImpl.await().onMockTime(intent) }
}
private fun updateBatteryLowAndNotChargingStatus(value: Boolean) {
val isBatteryLowAndNotCharging = watchState.isBatteryLowAndNotCharging as MutableStateFlow
if (!isBatteryLowAndNotCharging.hasValue() || value != isBatteryLowAndNotCharging.value) {
isBatteryLowAndNotCharging.value = value
watchFaceHostApi.invalidate()
}
}
fun onSysUiHasSentWatchUiState() {
sysUiHasSentWatchUiState = true
}
override fun onActionScreenOff() {
val keyguardManager =
watchFaceHostApi.getContext().getSystemService(Context.KEYGUARD_SERVICE)
as KeyguardManager
(watchState.isLocked as MutableStateFlow).value = keyguardManager.isDeviceLocked
}
override fun onActionUserPresent() {
(watchState.isLocked as MutableStateFlow).value = false
}
override fun onActionAmbientStarted() {
if (sysUiHasSentWatchUiState) {
return
}
val isAmbient = watchState.isAmbient as MutableStateFlow
isAmbient.value = true
}
override fun onActionAmbientStopped() {
if (sysUiHasSentWatchUiState) {
return
}
val isAmbient = watchState.isAmbient as MutableStateFlow
isAmbient.value = false
}
@UiThread
internal fun dump(writer: IndentingPrintWriter) {
writer.println("BroadcastsObserver:")
writer.increaseIndent()
writer.println("batteryLow=$batteryLow")
writer.println("charging=$charging")
writer.println("sysUiHasSentWatchUiState=$sysUiHasSentWatchUiState")
writer.decreaseIndent()
}
}