Fix hidden item sheet nested scroll

ui/src/main/java/de/mm20/launcher2/ui/launcher/modals/HiddenItemsSheet.kt

@@ -4,26 +4,34 @@ import androidx.compose.animation.AnimatedVisibility
 import androidx.compose.animation.core.MutableTransitionState
 import androidx.compose.animation.slideIn
 import androidx.compose.foundation.gestures.Orientation
-import androidx.compose.foundation.layout.*
+import androidx.compose.foundation.layout.Column
+import androidx.compose.foundation.layout.fillMaxSize
+import androidx.compose.foundation.layout.offset
+import androidx.compose.foundation.layout.padding
 import androidx.compose.foundation.rememberScrollState
+import androidx.compose.foundation.shape.CornerSize
 import androidx.compose.foundation.verticalScroll
 import androidx.compose.material.ExperimentalMaterialApi
 import androidx.compose.material.FractionalThreshold
+import androidx.compose.material.icons.Icons
+import androidx.compose.material.icons.rounded.Settings
 import androidx.compose.material.rememberSwipeableState
 import androidx.compose.material.swipeable
-import androidx.compose.material3.MaterialTheme
+import androidx.compose.material3.*
-import androidx.compose.material3.Surface
-import androidx.compose.material3.Text
-import androidx.compose.material3.TextButton
 import androidx.compose.runtime.Composable
 import androidx.compose.runtime.collectAsState
 import androidx.compose.runtime.getValue
 import androidx.compose.runtime.remember
-import androidx.compose.ui.Alignment
 import androidx.compose.ui.ExperimentalComposeUiApi
 import androidx.compose.ui.Modifier
+import androidx.compose.ui.geometry.Offset
+import androidx.compose.ui.input.nestedscroll.NestedScrollConnection
+import androidx.compose.ui.input.nestedscroll.NestedScrollSource
+import androidx.compose.ui.input.nestedscroll.nestedScroll
 import androidx.compose.ui.res.stringResource
+import androidx.compose.ui.text.style.TextOverflow
 import androidx.compose.ui.unit.IntOffset
+import androidx.compose.ui.unit.Velocity
 import androidx.compose.ui.unit.dp
 import androidx.compose.ui.window.Dialog
 import androidx.compose.ui.window.DialogProperties
@@ -49,18 +57,64 @@ fun HiddenItemsSheet(
             }
         }
 
-        AnimatedVisibility(
-            animationState,
-            enter = slideIn { IntOffset(0, it.height) }
-        ) {
         val swipeState =
             rememberSwipeableState(initialValue = SwipeState.Default) {
                 if (it == SwipeState.Dismiss) onDismiss()
                 return@rememberSwipeableState true
             }
+
+        val nestedScrollConnection = remember {
+            object : NestedScrollConnection {
+
+                override fun onPreScroll(available: Offset, source: NestedScrollSource): Offset {
+                    if (available.y > 0) {
+                        return super.onPreScroll(available, source)
+                    }
+                    val c = swipeState.performDrag(available.y)
+                    return Offset(available.x, c)
+                }
+
+                override fun onPostScroll(
+                    consumed: Offset,
+                    available: Offset,
+                    source: NestedScrollSource
+                ): Offset {
+                    if (available.y < 0) {
+                        return super.onPreScroll(available, source)
+                    }
+                    val c = swipeState.performDrag(available.y)
+                    return Offset(available.x, c)
+                }
+
+                override suspend fun onPreFling(available: Velocity): Velocity {
+                    if(available.y > 0) {
+                        return  super.onPreFling(available)
+                    }
+                    swipeState.performFling(available.y)
+                    return available
+                }
+
+                override suspend fun onPostFling(
+                    consumed: Velocity,
+                    available: Velocity
+                ): Velocity {
+                    if (available.y < 0) {
+                        return  super.onPreFling(available)
+                    }
+                    swipeState.performFling(available.y)
+                    return available
+                }
+            }
+        }
+
+        AnimatedVisibility(
+            animationState,
+            enter = slideIn { IntOffset(0, it.height) }
+        ) {
             Surface(
                 modifier = Modifier
                     .fillMaxSize()
+                    .nestedScroll(nestedScrollConnection)
                     .swipeable(
                         swipeState,
                         mapOf(
@@ -70,19 +124,38 @@ fun HiddenItemsSheet(
                         orientation = Orientation.Vertical,
                         thresholds = { _, _ -> FractionalThreshold(0.5f) },
                     )
-                    .offset { IntOffset(0, swipeState.offset.value.roundToInt()) }
+                    .offset { IntOffset(0, swipeState.offset.value.roundToInt()) },
-
+                shape = MaterialTheme.shapes.large.copy(
+                    bottomEnd = CornerSize(0f),
+                    bottomStart = CornerSize(0f),
+                    )
             ) {
                 Column(
                     modifier = Modifier
                         .fillMaxSize()
                 ) {
+
+                    SmallTopAppBar(
+                        title = {
                             Text(
                                 stringResource(R.string.preference_hidden_items),
-                        style = MaterialTheme.typography.titleLarge,
+                                overflow = TextOverflow.Ellipsis,
-                        modifier = Modifier.padding(24.dp)
+                                modifier = Modifier.padding(horizontal = 16.dp),
-
+                                maxLines = 1
                             )
+                        },
+                        actions = {
+                            IconButton(onClick = { /*TODO*/ }) {
+                                Icon(
+                                    imageVector = Icons.Rounded.Settings,
+                                    contentDescription = stringResource(
+                                        R.string.settings
+                                    )
+                                )
+                            }
+                        }
+                    )
+
                     val items by viewModel.hiddenItems.collectAsState(emptyList())
                     SearchResultGrid(
                         items,
@@ -91,18 +164,6 @@ fun HiddenItemsSheet(
                             .padding(8.dp)
                             .verticalScroll(rememberScrollState())
                     )
-                    Box(
-                        modifier = Modifier
-                            .fillMaxWidth()
-                            .padding(12.dp),
-                        contentAlignment = Alignment.CenterEnd
-                    ) {
-                        TextButton(onClick = { onDismiss() }) {
-                            Text(
-                                stringResource(id = R.string.close),
-                            )
-                        }
-                    }
                 }
             }
         }