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Co-authored-by: Ashley Davies <[email protected]>
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82 changes: 82 additions & 0 deletions
82
conferences-app/src/commonMain/kotlin/io/ashdavies/party/gallery/GalleryPresenter.kt
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,82 @@ | ||
| package io.ashdavies.party.gallery | ||
|
|
||
| import androidx.compose.runtime.Composable | ||
| import androidx.compose.runtime.getValue | ||
| import androidx.compose.runtime.mutableStateOf | ||
| import androidx.compose.runtime.rememberCoroutineScope | ||
| import androidx.compose.runtime.setValue | ||
| import com.slack.circuit.retained.produceRetainedState | ||
| import com.slack.circuit.retained.rememberRetained | ||
| import kotlinx.coroutines.launch | ||
|
|
||
| @Composable | ||
| internal fun GalleryPresenter( | ||
| imageManager: ImageManager, | ||
| syncManager: SyncManager, | ||
| ): GalleryScreen.State { | ||
| val itemList by produceRetainedState(emptyList<Image>()) { | ||
| imageManager.list.collect { value = it } | ||
| } | ||
|
|
||
| val syncState by produceRetainedState(emptyMap<String, SyncState>()) { | ||
| syncManager.state.collect { value = it } | ||
| } | ||
|
|
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| val coroutineScope = rememberCoroutineScope() | ||
|
|
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| var expandedItem by rememberRetained { | ||
| mutableStateOf<GalleryScreen.State.ExpandedItem?>(null) | ||
| } | ||
|
|
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| var selected by rememberRetained { mutableStateOf(emptyList<Image>()) } | ||
| var takePhoto by rememberRetained { mutableStateOf(false) } | ||
|
|
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| return GalleryScreen.State( | ||
| itemList = itemList.map { | ||
| GalleryScreen.State.StandardItem( | ||
| title = it.name, | ||
| imageModel = File(it.path), | ||
| isSelected = it in selected, | ||
| state = syncState[it.name] ?: SyncState.NOT_SYNCED, | ||
| ) | ||
| }, | ||
| expandedItem = expandedItem, | ||
| showCapture = takePhoto, | ||
| ) { event -> | ||
| when (event) { | ||
| is GalleryScreen.Event.Capture.Result -> coroutineScope.launch { | ||
| imageManager.add(event.value) | ||
| takePhoto = false | ||
| } | ||
|
|
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| is GalleryScreen.Event.Capture.Cancel -> takePhoto = false | ||
| is GalleryScreen.Event.Capture.Request -> takePhoto = true | ||
|
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| is GalleryScreen.Event.Selection.Expand -> { | ||
| expandedItem = GalleryScreen.State.ExpandedItem( | ||
| contentDescription = itemList[event.index].name, | ||
| imageModel = File(itemList[event.index].path), | ||
| isExpanded = true, | ||
| ) | ||
| } | ||
|
|
||
| is GalleryScreen.Event.Selection.Toggle -> itemList[event.index].also { | ||
| if (it in selected) selected -= it else selected += it | ||
| } | ||
|
|
||
| is GalleryScreen.Event.Selection.Collapse -> { | ||
| expandedItem = expandedItem?.copy(isExpanded = false) | ||
| } | ||
|
|
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| is GalleryScreen.Event.Selection.Delete -> coroutineScope.launch { | ||
| selected.forEach { imageManager.remove(it) } | ||
| selected = emptyList() | ||
| } | ||
|
|
||
| is GalleryScreen.Event.Selection.Sync -> coroutineScope.launch { | ||
| selected.forEach { syncManager.sync(it.path) } | ||
| selected = emptyList() | ||
| } | ||
| } | ||
| } | ||
| } |
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