Fold the selection bar while a chip shows and match it to the FAB (#141)

app/src/main/java/de/jeanlucmakiola/calendula/ui/CalendarHost.kt

@@ -391,6 +391,8 @@ fun CalendarHost(
     val reschedule: RescheduleViewModel = hiltViewModel()
     val movableCalendarIds by reschedule.movableCalendarIds.collectAsStateWithLifecycle()
     val eventActions: EventActionsViewModel = hiltViewModel()
+    val moveOutcome by reschedule.outcome.collectAsStateWithLifecycle()
+    val selectionFailure by eventActions.failure.collectAsStateWithLifecycle()
     val onEditEvent: (EventInstance) -> Unit = { event ->
         val key = longArrayOf(
             event.eventId,
@@ -543,6 +545,11 @@ fun CalendarHost(
                         importFormSource = ImportSource.Insert
                         importForm = form
                     },
+                    chipShown = moveOutcome != null || selectionFailure != null,
+                    onDismissChip = {
+                        reschedule.consumeOutcome()
+                        eventActions.consumeFailure()
+                    },
                 )
                 CalendarFab(chromeHost, todayInToolbar, fabSelection)
             },
@@ -600,12 +607,10 @@ fun CalendarHost(
 
         // Scope prompt + confirmation/undo snackbar for a dropped event, declared
         // right after the calendar views so later overlays cover it.
-        val actionFailure by eventActions.failure.collectAsStateWithLifecycle()
         EventMoveHost(
             reschedule,
             modifier = Modifier.fillMaxSize(),
-            raised = chromeHost.selectionBarShown && chromeHost.selectionBarExpanded,
-            actionFailure = eventActionFailureMessage(actionFailure),
+            actionFailure = eventActionFailureMessage(selectionFailure),
             onActionFailureShown = eventActions::consumeFailure,
         )
 

app/src/main/java/de/jeanlucmakiola/calendula/ui/common/CalendarChrome.kt

@@ -90,10 +90,6 @@ class ChromeHost {
     var selectionCompact by mutableStateOf(false)
         internal set
 
-    /** Whether the selection's bar is unfolded, rather than folded into its button. */
-    var selectionBarExpanded by mutableStateOf(false)
-        internal set
-
     /** Whether the selection's action bar is showing — it steps aside mid-gesture. */
     val selectionBarShown: Boolean get() = selection != null && !selectionBusy
 

app/src/main/java/de/jeanlucmakiola/calendula/ui/common/CalendarFabColumn.kt

@@ -13,7 +13,6 @@ import androidx.compose.foundation.layout.Box
 import androidx.compose.foundation.layout.Column
 import androidx.compose.foundation.layout.Row
 import androidx.compose.foundation.layout.height
-import androidx.compose.foundation.layout.wrapContentHeight
 import androidx.compose.material.icons.Icons
 import androidx.compose.material.icons.automirrored.filled.KeyboardArrowRight
 import androidx.compose.material.icons.filled.Add
@@ -90,8 +89,6 @@ fun CalendarFabColumn(
         ) {
             AnimatedVisibility(
                 visible = selection?.expanded == true,
-                // Overflows the row evenly above and below, centred on the FAB.
-                modifier = Modifier.wrapContentHeight(unbounded = true),
                 enter = expandHorizontally(
                     animationSpec = MaterialTheme.motionScheme.fastSpatialSpec(),
                     expandFrom = Alignment.End,

app/src/main/java/de/jeanlucmakiola/calendula/ui/common/EventMoveHost.kt

@@ -51,7 +51,6 @@ private val FAB_BAND = 88.dp
 fun EventMoveHost(
     viewModel: RescheduleViewModel,
     modifier: Modifier = Modifier,
-    raised: Boolean = false,
     actionFailure: String? = null,
     onActionFailureShown: () -> Unit = {},
 ) {
@@ -126,11 +125,7 @@ fun EventMoveHost(
             modifier = Modifier
                 .align(Alignment.BottomStart)
                 .navigationBarsPadding()
-                // Above the selection bar while it is up (#141).
-                .padding(
-                    start = SnackChipMargin,
-                    bottom = SnackChipMargin + if (raised) SelectionBarClearance else 0.dp,
-                )
+                .padding(start = SnackChipMargin, bottom = SnackChipMargin)
                 .height(SnackChipHeight),
             contentAlignment = Alignment.CenterStart,
         ) {

app/src/main/java/de/jeanlucmakiola/calendula/ui/common/EventSelectionBar.kt

@@ -1,23 +1,27 @@
 package de.jeanlucmakiola.calendula.ui.common
 
+import androidx.compose.foundation.layout.Row
+import androidx.compose.foundation.layout.height
+import androidx.compose.foundation.layout.padding
+import androidx.compose.foundation.shape.CircleShape
 import androidx.compose.material.icons.Icons
 import androidx.compose.material.icons.filled.ContentCopy
 import androidx.compose.material.icons.filled.Delete
 import androidx.compose.material.icons.filled.Edit
 import androidx.compose.material.icons.filled.Share
-import androidx.compose.material3.ExperimentalMaterial3ExpressiveApi
-import androidx.compose.material3.FloatingToolbarDefaults
-import androidx.compose.material3.HorizontalFloatingToolbar
 import androidx.compose.material3.Icon
 import androidx.compose.material3.IconButton
+import androidx.compose.material3.MaterialTheme
+import androidx.compose.material3.Surface
 import androidx.compose.runtime.Composable
+import androidx.compose.ui.Alignment
 import androidx.compose.ui.Modifier
 import androidx.compose.ui.graphics.vector.ImageVector
 import androidx.compose.ui.res.stringResource
+import androidx.compose.ui.unit.dp
 import de.jeanlucmakiola.calendula.R
 
 /** The selected event's action bar (#141); Edit and Delete only where its calendar allows. */
-@OptIn(ExperimentalMaterial3ExpressiveApi::class)
 @Composable
 fun EventSelectionBar(
     canEdit: Boolean,
@@ -28,15 +32,23 @@ fun EventSelectionBar(
     onDelete: () -> Unit,
     modifier: Modifier = Modifier,
 ) {
-    HorizontalFloatingToolbar(
-        expanded = true,
-        colors = FloatingToolbarDefaults.vibrantFloatingToolbarColors(),
-        modifier = modifier,
+    // The FAB's height and colours, so the two read as one control.
+    Surface(
+        shape = CircleShape,
+        color = MaterialTheme.colorScheme.primaryContainer,
+        contentColor = MaterialTheme.colorScheme.onPrimaryContainer,
+        shadowElevation = 6.dp,
+        modifier = modifier.height(56.dp),
     ) {
-        if (canEdit) BarAction(Icons.Default.Edit, R.string.event_detail_edit, onEdit)
-        BarAction(Icons.Default.ContentCopy, R.string.event_detail_duplicate, onDuplicate)
-        BarAction(Icons.Default.Share, R.string.event_detail_share, onShare)
-        if (canDelete) BarAction(Icons.Default.Delete, R.string.event_detail_delete, onDelete)
+        Row(
+            verticalAlignment = Alignment.CenterVertically,
+            modifier = Modifier.padding(horizontal = 4.dp),
+        ) {
+            if (canEdit) BarAction(Icons.Default.Edit, R.string.event_detail_edit, onEdit)
+            BarAction(Icons.Default.ContentCopy, R.string.event_detail_duplicate, onDuplicate)
+            BarAction(Icons.Default.Share, R.string.event_detail_share, onShare)
+            if (canDelete) BarAction(Icons.Default.Delete, R.string.event_detail_delete, onDelete)
+        }
     }
 }
 

app/src/main/java/de/jeanlucmakiola/calendula/ui/common/EventSelectionHost.kt

@@ -1,7 +1,6 @@
 package de.jeanlucmakiola.calendula.ui.common
 
 import androidx.compose.runtime.Composable
-import androidx.compose.runtime.SideEffect
 import androidx.compose.runtime.getValue
 import androidx.compose.runtime.mutableStateOf
 import androidx.compose.runtime.remember
@@ -17,8 +16,8 @@ import de.jeanlucmakiola.calendula.domain.EventInstance
 import de.jeanlucmakiola.floret.components.SnackChipMargin
 import kotlinx.coroutines.launch
 
-/** How far the bottom chips rise while the selection bar is open, to clear it. */
-val SelectionBarClearance = 64.dp + SnackChipMargin
+/** The bottom band the selection bar and FAB cover, margin included. */
+val SelectionBarClearance = 56.dp + SnackChipMargin
 
 /** The FAB's role while an event is selected (#141): its action bar's toggle. Null otherwise. */
 @Composable
@@ -27,6 +26,8 @@ fun rememberFabSelection(
     viewModel: EventActionsViewModel,
     onEdit: (EventInstance) -> Unit,
     onDuplicate: (EventForm) -> Unit,
+    chipShown: Boolean,
+    onDismissChip: () -> Unit,
 ): FabSelection? {
     val calendars by viewModel.calendars.collectAsStateWithLifecycle()
     val context = LocalContext.current
@@ -36,8 +37,8 @@ fun rememberFabSelection(
 
     // What the FAB has been told for this selection, over what the coverage says.
     var chosen by remember(host.selection?.event) { mutableStateOf<Boolean?>(null) }
-    val expanded = chosen ?: !host.selectionCompact
-    SideEffect { host.selectionBarExpanded = expanded && host.selection != null }
+    // Folded while a chip is up, which then sits beside the FAB as usual.
+    val expanded = !chipShown && (chosen ?: !host.selectionCompact)
 
     val selection = host.selection ?: return null
     val event = selection.event
@@ -45,7 +46,10 @@ fun rememberFabSelection(
     val canEdit = calendar?.canModifyContents == true
     return FabSelection(
         expanded = expanded,
-        onToggle = { chosen = !expanded },
+        onToggle = {
+            if (chipShown) onDismissChip()
+            chosen = !expanded
+        },
         bar = {
             EventSelectionBar(
                 canEdit = canEdit,