[kairos] fix mobile icon bg binding (9eaace52) · Commits · e / os / android_frameworks_base

packages/SystemUI/src/com/android/systemui/statusbar/pipeline/mobile/ui/binder/MobileIconBinderKairos.kt

+135 −159

Original line number	Diff line number	Diff line
		@@ -32,6 +32,7 @@ import com.android.systemui.kairos.BuildSpec
		import com.android.systemui.kairos.ExperimentalKairosApi
		import com.android.systemui.kairos.KairosNetwork
		import com.android.systemui.kairos.MutableState
		import com.android.systemui.kairos.combine
		import com.android.systemui.kairos.effect
		import com.android.systemui.lifecycle.repeatWhenAttachedToWindow
		import com.android.systemui.lifecycle.repeatWhenWindowIsVisible
		@@ -44,6 +45,8 @@ import com.android.systemui.statusbar.pipeline.mobile.ui.viewmodel.LocationBased
		import com.android.systemui.statusbar.pipeline.shared.ui.binder.ModernStatusBarViewBinding
		import com.android.systemui.statusbar.pipeline.shared.ui.binder.ModernStatusBarViewVisibilityHelper
		import com.android.systemui.statusbar.pipeline.shared.ui.binder.StatusBarViewBinderConstants
		import com.android.systemui.util.lifecycle.kairos.repeatWhenAttachedToWindow
		import com.android.systemui.util.lifecycle.kairos.repeatWhenWindowIsVisible
		import kotlinx.coroutines.CoroutineScope
		import kotlinx.coroutines.Job
		import kotlinx.coroutines.awaitCancellation
		@@ -64,7 +67,6 @@ object MobileIconBinderKairos {
		val binding = ModernStatusBarViewBindingKairosImpl(kairosNetwork, initialVisibilityState)
		return binding to
		scope.launch {
		view.repeatWhenAttachedToWindow {
		kairosNetwork.activateSpec {
		bind(
		view = view,
		@@ -75,7 +77,6 @@ object MobileIconBinderKairos {
		}
		}
		}
		}

		@ExperimentalKairosApi
		private class ModernStatusBarViewBindingKairosImpl(
		@@ -140,12 +141,12 @@ object MobileIconBinderKairos {
		effect {
		view.isVisible = isVisible
		iconView.isVisible = true
		launch {
		view.repeatWhenAttachedToWindow {
		}

		repeatWhenAttachedToWindow(view) {
		// isVisible controls the visibility state of the outer group, and thus it needs
		// to run in the CREATED lifecycle so it can continue to watch while invisible
		// See (b/291031862) for details
		kairosNetwork.activateSpec {
		viewModel.isVisible.observe { isVisible ->
		viewModel.verboseLogger?.logBinderReceivedVisibility(
		view,
		@@ -158,13 +159,19 @@ object MobileIconBinderKairos {
		view.requestLayout()
		}
		}
		}
		}
		launch {
		view.repeatWhenWindowIsVisible {

		repeatWhenWindowIsVisible(view) {
		logger.logCollectionStarted(view, viewModel)
		binding.isCollecting = true
		kairosNetwork.activateSpec {
		effect {
		try {
		awaitCancellation()
		} finally {
		binding.isCollecting = false
		logger.logCollectionStopped(view, viewModel)
		}
		}

		binding.visibility.observe { state ->
		ModernStatusBarViewVisibilityHelper.setVisibilityState(
		state,
		@@ -175,8 +182,7 @@ object MobileIconBinderKairos {
		}

		// Set the icon for the triangle
		viewModel.icon.pairwise(initialPreviousValue = null).observe {
		(oldIcon, newIcon) ->
		viewModel.icon.pairwise(initialPreviousValue = null).observe { (oldIcon, newIcon) ->
		val shouldRequestLayout =
		when {
		oldIcon == null -> true
		@@ -223,23 +229,28 @@ object MobileIconBinderKairos {
		}
		}

		// Set the network type background

		viewModel.networkTypeIcon
		.mapTransactionally { it to binding.iconTint.sample() }
		.observe { (background, iconTintColors) ->
		// Set the network type background and tint
		viewModel.networkTypeBackground.observe { background ->
		networkTypeContainer.setBackgroundResource(background?.res ?: 0)
		}

		combine(viewModel.networkTypeBackground, binding.iconTint) { background, colors ->
		Pair(background != null, colors)
		}
		.observe { (hasBackground, colors) ->
		// Tint will invert when this bit changes
		if (background?.res != null) {
		networkTypeContainer.backgroundTintList =
		ColorStateList.valueOf(iconTintColors.tint)
		networkTypeView.imageTintList =
		ColorStateList.valueOf(iconTintColors.contrast)
		val tint = ColorStateList.valueOf(colors.tint)
		if (hasBackground) {
		networkTypeContainer.backgroundTintList = tint
		networkTypeView.imageTintList = ColorStateList.valueOf(colors.contrast)
		} else {
		networkTypeView.imageTintList =
		ColorStateList.valueOf(iconTintColors.tint)
		networkTypeView.imageTintList = tint
		}

		roamingView.imageTintList = tint
		activityIn.imageTintList = tint
		activityOut.imageTintList = tint
		dotView.setDecorColor(colors.tint)
		}

		// Set the roaming indicator
		@@ -266,44 +277,9 @@ object MobileIconBinderKairos {
		viewModel.activityOutVisible.observe { activityOut.isVisible = it }
		}

		viewModel.activityContainerVisible.observe {
		activityContainer.isVisible = it
		}

		// Set the tint
		binding.iconTint
		.mapTransactionally { it to viewModel.networkTypeBackground.sample() }
		.observe { (colors, networkTypeBackground) ->
		val tint = ColorStateList.valueOf(colors.tint)
		val contrast = ColorStateList.valueOf(colors.contrast)

		iconView.imageTintList = tint

		// If the bg is visible, tint it and use the contrast for the fg
		if (networkTypeBackground != null) {
		networkTypeContainer.backgroundTintList = tint
		networkTypeView.imageTintList = contrast
		} else {
		networkTypeView.imageTintList = tint
		}

		roamingView.imageTintList = tint
		activityIn.imageTintList = tint
		activityOut.imageTintList = tint
		dotView.setDecorColor(colors.tint)
		}
		viewModel.activityContainerVisible.observe { activityContainer.isVisible = it }

		binding.decorTint.observe { tint -> dotView.setDecorColor(tint) }
		}

		try {
		awaitCancellation()
		} finally {
		binding.isCollecting = false
		logger.logCollectionStopped(view, viewModel)
		}
		}
		}
		}
		}
		}

packages/SystemUI/src/com/android/systemui/util/lifecycle/kairos/RepeatWhenAttachedKairos.kt

0 → 100644

+169 −0

Original line number	Diff line number	Diff line
		/*
		* Copyright (C) 2025 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.util.lifecycle.kairos

		import android.view.View
		import android.view.ViewTreeObserver
		import com.android.systemui.coroutines.newTracingContext
		import com.android.systemui.kairos.BuildScope
		import com.android.systemui.kairos.ExperimentalKairosApi
		import com.android.systemui.lifecycle.WindowLifecycleState
		import com.android.systemui.util.Assert
		import com.android.systemui.utils.coroutines.flow.conflatedCallbackFlow
		import com.android.systemui.utils.coroutines.flow.flatMapLatestConflated
		import kotlinx.coroutines.Dispatchers
		import kotlinx.coroutines.channels.awaitClose
		import kotlinx.coroutines.flow.Flow
		import kotlinx.coroutines.flow.emptyFlow
		import kotlinx.coroutines.flow.flowOn
		import kotlinx.coroutines.flow.map
		import kotlinx.coroutines.flow.onStart

		/**
		* Runs the given [block] in a new [BuildScope] when `this` [View]'s [Window][android.view.Window]'s
		* [WindowLifecycleState] is at least at [state] (or immediately after calling this function if the
		* window is already at least at [state]), automatically canceling the work when the window is no
		* longer at least at that state.
		*
		* [block] may be run multiple times, running once per every time the [WindowLifecycleState] becomes
		* at least at [state].
		*/
		@ExperimentalKairosApi
		fun BuildScope.repeatOnWindowLifecycle(
		view: View,
		state: WindowLifecycleState,
		block: BuildScope.() -> Unit,
		) {
		when (state) {
		WindowLifecycleState.ATTACHED -> repeatWhenAttachedToWindow(view, block)
		WindowLifecycleState.VISIBLE -> repeatWhenWindowIsVisible(view, block)
		WindowLifecycleState.FOCUSED -> repeatWhenWindowHasFocus(view, block)
		}
		}

		/**
		* Runs the given [block] every time the [View] becomes attached (or immediately after calling this
		* function, if the view was already attached), automatically canceling the work when the view
		* becomes detached.
		*
		* [block] may be run multiple times, running once per every time the view is attached.
		*/
		@ExperimentalKairosApi
		fun BuildScope.repeatWhenAttachedToWindow(view: View, block: BuildScope.() -> Unit) {
		view.isAttached.flowOn(MAIN_DISPATCHER_SINGLETON).toState(false).observeLatestBuild {
		if (it) {
		block()
		}
		}
		}

		/**
		* Runs the given [block] every time the [Window][android.view.Window] this [View] is attached to
		* becomes visible (or immediately after calling this function, if the window is already visible),
		* automatically canceling the work when the window becomes invisible.
		*
		* [block] may be run multiple times, running once per every time the window becomes visible.
		*/
		@ExperimentalKairosApi
		fun BuildScope.repeatWhenWindowIsVisible(view: View, block: BuildScope.() -> Unit) {
		view.isWindowVisible.flowOn(MAIN_DISPATCHER_SINGLETON).toState(false).observeLatestBuild {
		if (it) {
		block()
		}
		}
		}

		/**
		* Runs the given [block] every time the [Window][android.view.Window] this [View] is attached to
		* has focus (or immediately after calling this function, if the window is already focused),
		* automatically canceling the work when the window loses focus.
		*
		* [block] may be run multiple times, running once per every time the window is focused.
		*/
		@ExperimentalKairosApi
		fun BuildScope.repeatWhenWindowHasFocus(view: View, block: BuildScope.() -> Unit) {
		view.isWindowFocused.flowOn(MAIN_DISPATCHER_SINGLETON).toState(false).observeLatestBuild {
		if (it) {
		block()
		}
		}
		}

		private val View.isAttached
		get() = conflatedCallbackFlow {
		val onAttachListener =
		object : View.OnAttachStateChangeListener {
		override fun onViewAttachedToWindow(v: View) {
		Assert.isMainThread()
		trySend(true)
		}

		override fun onViewDetachedFromWindow(v: View) {
		trySend(false)
		}
		}
		addOnAttachStateChangeListener(onAttachListener)
		trySend(isAttachedToWindow)
		awaitClose { removeOnAttachStateChangeListener(onAttachListener) }
		}

		private val View.currentViewTreeObserver: Flow<ViewTreeObserver?>
		get() = isAttached.map { if (it) viewTreeObserver else null }

		private val View.isWindowVisible
		get() =
		currentViewTreeObserver
		.flatMapLatestConflated { vto ->
		vto?.isWindowVisible?.onStart { emit(windowVisibility == View.VISIBLE) }
		?: emptyFlow()
		}
		.flowOn(MAIN_DISPATCHER_SINGLETON)

		private val View.isWindowFocused
		get() =
		currentViewTreeObserver
		.flatMapLatestConflated { vto ->
		vto?.isWindowFocused?.onStart { emit(hasWindowFocus()) } ?: emptyFlow()
		}
		.flowOn(MAIN_DISPATCHER_SINGLETON)

		private val ViewTreeObserver.isWindowFocused
		get() = conflatedCallbackFlow {
		val listener = ViewTreeObserver.OnWindowFocusChangeListener { trySend(it) }
		addOnWindowFocusChangeListener(listener)
		awaitClose { removeOnWindowFocusChangeListener(listener) }
		}

		private val ViewTreeObserver.isWindowVisible
		get() = conflatedCallbackFlow {
		val listener =
		ViewTreeObserver.OnWindowVisibilityChangeListener { v -> trySend(v == View.VISIBLE) }
		addOnWindowVisibilityChangeListener(listener)
		awaitClose { removeOnWindowVisibilityChangeListener(listener) }
		}

		/**
		* Cache dispatcher in a top-level property so that we do not unnecessarily create new
		* `CoroutineContext` objects for tracing on each call to `repeatWhen-`. It is okay to reuse a
		* single instance of the tracing context because it is copied for its children.
		*
		* Also, ideally, we would use the injected `@Main CoroutineDispatcher`, but `repeatWhen-` functions
		* are extension functions, and plumbing dagger-injected instances for static usage has little
		* benefit.
		*/
		private val MAIN_DISPATCHER_SINGLETON =
		Dispatchers.Main.immediate + newTracingContext("RepeatWhenAttachedKairos")

packages/SystemUI/utils/kairos/src/com/android/systemui/kairos/BuildScope.kt

+11 −25

Original line number	Diff line number	Diff line
		@@ -638,13 +638,8 @@ interface BuildScope : HasNetwork, StateScope {
		*
		* With each invocation of [block], running effects from the previous invocation are cancelled.
		*/
		fun <A> Events<A>.observeLatest(block: suspend EffectScope.(A) -> Unit): DisposableHandle {
		var innerJob: Job? = null
		return observeBuild {
		innerJob?.cancel()
		innerJob = effect { block(it) }
		}
		}
		fun <A> Events<A>.observeLatest(block: suspend EffectScope.(A) -> Unit): DisposableHandle =
		mapLatestBuild { effect { block(it) } }.observeSync()

		/**
		* Invokes [block] with the value held by this [State], allowing side-effects to be safely
		@@ -652,13 +647,9 @@ interface BuildScope : HasNetwork, StateScope {
		*
		* With each invocation of [block], running effects from the previous invocation are cancelled.
		*/
		fun <A> State<A>.observeLatest(block: TransactionEffectScope.(A) -> Unit): Job = launchScope {
		var innerJob = effectSync { block(sample()) }
		changes.observeBuild {
		innerJob.cancel()
		innerJob = effectSync { block(it) }
		}
		}
		fun <A> State<A>.observeLatestSync(
		block: TransactionEffectScope.(A) -> Unit
		): DisposableHandle = mapLatestBuild { effectSync { block(it) } }.observeSync()

		/**
		* Applies [block] to the value held by this [State]. [block] receives an [BuildScope] that can
		@@ -669,13 +660,8 @@ interface BuildScope : HasNetwork, StateScope {
		* each invocation of [block], changes from the previous invocation are undone (any registered
		* [observers][observe] are unregistered, and any pending [side-effects][effect] are cancelled).
		*/
		fun <A> State<A>.observeLatestBuild(block: BuildScope.(A) -> Unit): Job = launchScope {
		var innerJob: Job = launchScope { block(sample()) }
		changes.observeBuild {
		innerJob.cancel()
		innerJob = launchScope { block(it) }
		}
		}
		fun <A> State<A>.observeLatestBuild(block: BuildScope.(A) -> Unit): DisposableHandle =
		mapLatestBuild(block).observeSync()

		/** Applies the [BuildSpec] within this [BuildScope]. */
		fun <A> BuildSpec<A>.applySpec(): A = this()
		@@ -691,15 +677,15 @@ interface BuildScope : HasNetwork, StateScope {
		* [effect].
		*
		* ```
		* fun <A> State<A>.observeBuild(block: BuildScope.(A) -> Unit): Job = launchScope {
		* fun <A> State<A>.observeBuild(block: BuildScope.(A) -> Unit): DisposableHandle {
		* block(sample())
		* changes.observeBuild(block)
		* return changes.observeBuild(block)
		* }
		* ```
		*/
		fun <A> State<A>.observeBuild(block: BuildScope.(A) -> Unit): Job = launchScope {
		fun <A> State<A>.observeBuild(block: BuildScope.(A) -> Unit): DisposableHandle {
		block(sample())
		changes.observeBuild(block)
		return changes.observeBuild(block)
		}

		/**