Store current carousel position (c6f70463) · Commits · e / os / android_frameworks_base

packages/SystemUI/src/com/android/systemui/media/remedia/data/repository/MediaRepository.kt

+31 −0

Original line number	Diff line number	Diff line
		@@ -24,7 +24,11 @@ import android.media.MediaMetadata
		import android.media.session.MediaController
		import android.media.session.PlaybackState
		import android.util.Log
		import androidx.compose.runtime.getValue
		import androidx.compose.runtime.mutableIntStateOf
		import androidx.compose.runtime.mutableStateListOf
		import androidx.compose.runtime.mutableStateOf
		import androidx.compose.runtime.setValue
		import androidx.compose.runtime.snapshots.SnapshotStateList
		import androidx.compose.ui.graphics.Color
		import com.android.internal.logging.InstanceId
		@@ -59,11 +63,22 @@ interface MediaRepository {
		/** Current sorted media sessions. */
		val currentMedia: List<MediaDataModel>

		/** Index of the current visible media session */
		val currentCarouselIndex: Int

		/** Whether media carousel should show first media session. */
		val shouldScrollToFirst: Boolean

		/** Seek to [to], in milliseconds on the media session with the given [sessionKey]. */
		fun seek(sessionKey: InstanceId, to: Long)

		/** Reorders media list when media is not visible to user */
		fun reorderMedia()

		fun storeCarouselIndex(index: Int)

		/** Resets [shouldScrollToFirst] flag. */
		fun resetScrollToFirst()
		}

		@SysUISingleton
		@@ -78,6 +93,10 @@ constructor(

		override val currentMedia: SnapshotStateList<MediaDataModel> = mutableStateListOf()

		override var currentCarouselIndex by mutableIntStateOf(0)

		override var shouldScrollToFirst by mutableStateOf(false)

		private var sortedMedia = TreeMap<MediaSortKeyModel, MediaDataModel>(comparator)

		// To store active controllers and their callbacks
		@@ -124,6 +143,15 @@ constructor(
		override fun reorderMedia() {
		currentMedia.clear()
		currentMedia.addAll(sortedMedia.values.toList())
		currentCarouselIndex = 0
		}

		override fun storeCarouselIndex(index: Int) {
		currentCarouselIndex = index
		}

		override fun resetScrollToFirst() {
		shouldScrollToFirst = false
		}

		private fun addToSortedMedia(data: MediaData, updateModel: UpdateArtInfoModel?) {
		@@ -175,6 +203,9 @@ constructor(
		}
		currentMedia.clear()
		if (isNewToCurrentMedia && active) {
		// New media added is at the top of the current media given its priority.
		// Media carousel should show the first card in the current media list.
		shouldScrollToFirst = true
		currentMedia.addAll(sortedMap.values.toList())
		} else {
		currentMedia.addAll(currentList)

packages/SystemUI/src/com/android/systemui/media/remedia/domain/interactor/MediaInteractor.kt

+24 −0

Original line number	Diff line number	Diff line
		@@ -64,6 +64,12 @@ interface MediaInteractor {
		/** The list of sessions. Needs to be backed by a compose snapshot state. */
		val sessions: List<MediaSessionModel>

		/** Index of the current visible media session */
		val currentCarouselIndex: Int

		/** Whether media carousel should show first media session. */
		val shouldScrollToFirst: Boolean

		/** Seek to [to], in milliseconds on the media session with the given [sessionKey]. */
		fun seek(sessionKey: Any, to: Long)

		@@ -74,6 +80,10 @@ interface MediaInteractor {
		fun openMediaSettings()

		fun reorderMedia()

		fun storeCurrentCarouselIndex(index: Int)

		fun resetScrollToFirst()
		}

		@SysUISingleton
		@@ -93,6 +103,12 @@ constructor(
		override val sessions: List<MediaSessionModel>
		get() = repository.currentMedia.map { toMediaSessionModel(it) }

		override val currentCarouselIndex: Int
		get() = repository.currentCarouselIndex

		override val shouldScrollToFirst: Boolean
		get() = repository.shouldScrollToFirst

		override fun seek(sessionKey: Any, to: Long) {
		repository.seek(sessionKey as InstanceId, to)
		}
		@@ -109,6 +125,14 @@ constructor(
		repository.reorderMedia()
		}

		override fun storeCurrentCarouselIndex(index: Int) {
		repository.storeCarouselIndex(index)
		}

		override fun resetScrollToFirst() {
		repository.resetScrollToFirst()
		}

		private fun toMediaSessionModel(dataModel: MediaDataModel): MediaSessionModel {
		return object : MediaSessionModel {
		override val key

packages/SystemUI/src/com/android/systemui/media/remedia/ui/compose/Media.kt

+12 −1

Original line number	Diff line number	Diff line
		@@ -229,8 +229,12 @@ private fun CardCarouselContent(
		modifier: Modifier = Modifier,
		) {
		val pagerState = rememberPagerState { viewModel.cards.size }
		LaunchedEffect(viewModel.currentIndex) {
		if (viewModel.currentIndex != pagerState.currentPage) {
		pagerState.scrollToPage(viewModel.currentIndex)
		}
		}
		LaunchedEffect(pagerState.currentPage) { viewModel.onCardSelected(pagerState.currentPage) }

		var isFalseTouchDetected: Boolean by
		remember(behavior.isCarouselScrollFalseTouch) { mutableStateOf(false) }
		val isSwipingEnabled = behavior.isCarouselScrollingEnabled && !isFalseTouchDetected
		@@ -308,6 +312,13 @@ private fun CardCarouselContent(
		)
		}
		}

		LaunchedEffect(viewModel.scrollToFirst) {
		if (viewModel.scrollToFirst && viewModel.cards.isNotEmpty()) {
		pagerState.animateScrollToPage(0)
		viewModel.onScrollToFirstCard()
		}
		}
		}

		/** Renders the UI of a single media card. */

packages/SystemUI/src/com/android/systemui/media/remedia/ui/viewmodel/MediaViewModel.kt

+12 −0

Original line number	Diff line number	Diff line
		@@ -69,6 +69,12 @@ constructor(
		private var selectedCardIndex: Int by mutableIntStateOf(0)
		private set

		/** The index of the currently visible card across different locations of media carousel */
		val currentIndex: Int by derivedStateOf { interactor.currentCarouselIndex }

		/** Whether media carousel should scroll to the first card in the list after composition */
		val scrollToFirst: Boolean by derivedStateOf { interactor.shouldScrollToFirst }

		/** The current list of cards to show in the UI. */
		val cards: List<MediaCardViewModel> by derivedStateOf {
		interactor.sessions.mapIndexed { sessionIndex, session ->
		@@ -307,6 +313,12 @@ constructor(
		fun onCardSelected(cardIndex: Int) {
		check(cardIndex >= 0 && cardIndex < cards.size)
		selectedCardIndex = cardIndex
		interactor.storeCurrentCarouselIndex(selectedCardIndex)
		}

		/** Notifies that the carousel is reordered and first card is now visible on screen. */
		fun onScrollToFirstCard() {
		interactor.resetScrollToFirst()
		}

		override suspend fun onActivated(): Nothing {