Fixed AutocompleteTextField, DropdownMenu just didn't work and always took focus from TextField

composeApp/src/commonMain/kotlin/net/codinux/banking/ui/App.kt

@@ -41,6 +41,7 @@ fun App() {
         setTransaction(bankService.getTransactions())
     }
 
+
     MaterialTheme(colors = colors, typography = typography) {
         Box {
             Column(

composeApp/src/commonMain/kotlin/net/codinux/banking/ui/dialogs/AddAccountDialog.kt

@@ -1,7 +1,6 @@
 package net.codinux.banking.ui.dialogs
 
 import androidx.compose.foundation.background
-import androidx.compose.foundation.clickable
 import androidx.compose.foundation.layout.*
 import androidx.compose.material.*
 import androidx.compose.material.icons.Icons
@@ -25,7 +24,7 @@ private val bankingService = DI.bankingService
 fun AddAccountDialog(
     onDismiss: () -> Unit,
 ) {
-    var bankCode by remember { mutableStateOf("") }
+    var selectedBank by remember { mutableStateOf<BankInfo?>(null) }
     var loginName by remember { mutableStateOf("") }
     var password by remember { mutableStateOf("") }
 
@@ -54,14 +53,9 @@ fun AddAccountDialog(
                 AutocompleteTextField(
                     onValueChange = { selectedBank = it },
                     label = { Text("Bank (Suche mit Name, Bankleitzahl oder Ort)") },
+                    getItemTitle = { bank -> bank.name },
                     fetchSuggestions = { query -> bankingService.findBanks(query) }
                 ) { bank ->
-                    Column(
-                        Modifier.fillMaxWidth().clickable {
-                            selectedItem = bank
-                        }
-                            .padding(8.dp)
-                    )  {
                     Text(bank.name)
 
                     Row(Modifier.fillMaxWidth().padding(top = 8.dp)) {
@@ -70,7 +64,6 @@ fun AddAccountDialog(
                         Text("${bank.postalCode} ${bank.city}", Modifier.weight(1f).padding(start = 8.dp), color = Color.Gray)
                     }
                 }
-                }
 
                 Spacer(modifier = Modifier.height(24.dp))
 

composeApp/src/commonMain/kotlin/net/codinux/banking/ui/forms/AutocompleteTextField.kt

@@ -1,35 +1,48 @@
 package net.codinux.banking.ui.forms
 
+import androidx.compose.foundation.ScrollState
 import androidx.compose.foundation.clickable
 import androidx.compose.foundation.layout.*
+import androidx.compose.foundation.verticalScroll
 import androidx.compose.material.CircularProgressIndicator
-import androidx.compose.material.DropdownMenu
+import androidx.compose.material.Divider
 import androidx.compose.material.Icon
 import androidx.compose.material.Text
 import androidx.compose.material.icons.Icons
 import androidx.compose.material.icons.filled.Close
+import androidx.compose.runtime.Composable
 import androidx.compose.runtime.*
 import androidx.compose.ui.Modifier
+import androidx.compose.ui.focus.FocusDirection
+import androidx.compose.ui.focus.FocusRequester
+import androidx.compose.ui.focus.focusRequester
 import androidx.compose.ui.geometry.Size
 import androidx.compose.ui.layout.onGloballyPositioned
+import androidx.compose.ui.platform.LocalDensity
+import androidx.compose.ui.platform.LocalFocusManager
 import androidx.compose.ui.unit.dp
 import androidx.compose.ui.unit.toSize
 import kotlinx.coroutines.launch
+import net.codinux.banking.ui.service.Colors
 
 @Composable
 fun <T> AutocompleteTextField(
-    onValueChange: (T) -> Unit,
+    onValueChange: (T?) -> Unit,
     modifier: Modifier = Modifier.fillMaxWidth(),
     label: @Composable () -> Unit = { Text("Search") },
+    showDividersBetweenItems: Boolean = true,
+    getItemTitle: ((T) -> String)? = null,
     fetchSuggestions: suspend (query: String) -> List<T> = { emptyList() },
     suggestionContent: @Composable (T) -> Unit
 ) {
     var searchQuery by remember { mutableStateOf("") }
-    var selectedItem by remember { mutableStateOf<T?>(null) }
     var isLoading by remember { mutableStateOf(false) }
     var suggestions by remember { mutableStateOf<List<T>>(emptyList()) }
     var textFieldSize by remember { mutableStateOf(Size.Zero) }
-    val expanded by remember(suggestions) { derivedStateOf { suggestions.isNotEmpty() } }
+    var expanded by remember { mutableStateOf(false) }
+
+    val textFieldFocus = remember { FocusRequester() }
+    val focusManager = LocalFocusManager.current
 
     val coroutineScope = rememberCoroutineScope()
 
@@ -39,19 +52,25 @@ fun <T> AutocompleteTextField(
             value = searchQuery,
             onValueChange = { query ->
                 searchQuery = query
-                selectedItem = null
+                onValueChange(null)
-                if (query.length >= 2) {
+
+                if (query.length >= 1) {
                     isLoading = true
+
                     coroutineScope.launch {
                         suggestions = fetchSuggestions(query)
                         isLoading = false
+                        expanded = true
                     }
                 } else {
                     suggestions = emptyList()
+                    expanded = false
                 }
             },
             label = label,
-            modifier = modifier.onGloballyPositioned {
+            modifier = modifier
+                .focusRequester(textFieldFocus)
+                .onGloballyPositioned {
                     textFieldSize = it.size.toSize()
                 },
             trailingIcon = {
@@ -67,7 +86,8 @@ fun <T> AutocompleteTextField(
                         modifier = Modifier.clickable {
                             searchQuery = ""
                             suggestions = emptyList()
-                            selectedItem = null
+                            expanded = false
+                            onValueChange(null)
                         }
                     )
                 }
@@ -75,20 +95,42 @@ fun <T> AutocompleteTextField(
 //            isError = selectedItem == null && searchQuery.isNotEmpty()
         )
 
-        DropdownMenu(
+        if (expanded) {
-            expanded = expanded,
+            RoundedCornersCard(
-            onDismissRequest = { suggestions = emptyList() },
+                Modifier.width(textFieldSize.width.dp)
-            modifier = with(Modifier) {
-                width(textFieldSize.width.dp)
                     .heightIn(max = 400.dp)
+                    .padding(top = with(LocalDensity.current) { (textFieldSize.height + 2).toDp() })
+                ,
+                cornerSize = 4.dp,
+                shadowElevation = 4.dp
+            ) {
+                Column(Modifier.verticalScroll(ScrollState(0), enabled = true)) {
+                    suggestions.forEachIndexed { index, item ->
+                        Column(
+                            Modifier.fillMaxWidth().padding(8.dp).clickable {
+                                onValueChange(item)
+                                getItemTitle?.let {
+                                    searchQuery = it.invoke(item)
+                                }
+                                expanded = false
+                                focusManager.moveFocus(FocusDirection.Down)
                             }
                         ) {
-            suggestions.forEach { item ->
-                Column(Modifier.fillMaxWidth()) {
                             suggestionContent(item)
                         }
+
+                        if (showDividersBetweenItems && index < suggestions.size - 1) {
+                            Divider(color = Colors.Zinc200, thickness = 1.dp)
+                        }
+                    }
+                }
             }
         }
     }
 
+
+    LaunchedEffect(textFieldFocus) {
+        textFieldFocus.requestFocus()
+    }
+
 }

composeApp/src/commonMain/kotlin/net/codinux/banking/ui/forms/RoundedCornersCard.kt

@@ -3,12 +3,14 @@ package net.codinux.banking.ui.forms
 import androidx.compose.foundation.shape.RoundedCornerShape
 import androidx.compose.material.Card
 import androidx.compose.runtime.Composable
+import androidx.compose.ui.Modifier
 import androidx.compose.ui.unit.Dp
 import androidx.compose.ui.unit.dp
 
 @Composable
-fun RoundedCornersCard(cornerSize: Dp = 12.dp, shadowElevation: Dp = 2.dp, content: @Composable () -> Unit) {
+fun RoundedCornersCard(modifier: Modifier = Modifier, cornerSize: Dp = 12.dp, shadowElevation: Dp = 2.dp, content: @Composable () -> Unit) {
     Card(
+        modifier,
         shape = RoundedCornerShape(cornerSize), // Rounded corners
         elevation = shadowElevation, // Shadow elevation
         content = content