First draft

app/src/main/java/me/zobrist/tichucounter/data/GameDao.kt

@@ -35,4 +35,7 @@ interface GameDao : DaoBase<Game> {
     @Query("UPDATE game SET active = 0 WHERE uid is not :gameId;")
     fun setOthersInactive(gameId: Long)
 
+    @Query("SELECT names FROM (SELECT nameA AS names FROM game UNION ALL SELECT nameB AS names FROM game) GROUP BY names")
+    fun getDistinctTeamNames(): Flow<List<String>>
+
 }

app/src/main/java/me/zobrist/tichucounter/repository/GameRepository.kt

@@ -2,10 +2,7 @@ package me.zobrist.tichucounter.repository
 
 import kotlinx.coroutines.CoroutineScope
 import kotlinx.coroutines.Dispatchers
-import kotlinx.coroutines.flow.Flow
-import kotlinx.coroutines.flow.filter
-import kotlinx.coroutines.flow.map
-import kotlinx.coroutines.flow.take
+import kotlinx.coroutines.flow.*
 import kotlinx.coroutines.launch
 import kotlinx.coroutines.withContext
 import me.zobrist.tichucounter.data.GameDao
@@ -23,6 +20,8 @@ class GameRepository @Inject constructor(
 
     private var activeGame: Game = Game(true, "TeamA", "TeamB", Date(), Date())
 
+    private var distinctTeamNames: List<String> = listOf()
+
     init {
         CoroutineScope(Dispatchers.IO).launch {
             gameDao.getActiveAsFlow().collect {
@@ -130,4 +129,8 @@ class GameRepository @Inject constructor(
     fun getAllWithRoundFlow(): Flow<List<GameWithScores>> {
         return gameDao.getGamesWithRounds()
     }
+
+    fun getDistinctTeamNames(): Flow<List<String>> {
+        return  gameDao.getDistinctTeamNames()
+    }
 }

app/src/main/java/me/zobrist/tichucounter/ui/composables/TypeaheadTextField.kt

@@ -0,0 +1,90 @@
+package me.zobrist.tichucounter.ui.composables
+
+import androidx.compose.foundation.layout.width
+import androidx.compose.foundation.text.KeyboardActions
+import androidx.compose.foundation.text.KeyboardOptions
+import androidx.compose.material3.*
+import androidx.compose.runtime.*
+import androidx.compose.ui.ExperimentalComposeUiApi
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.focus.onFocusChanged
+import androidx.compose.ui.input.key.Key
+import androidx.compose.ui.input.key.key
+import androidx.compose.ui.input.key.onKeyEvent
+import androidx.compose.ui.layout.onSizeChanged
+import androidx.compose.ui.platform.LocalDensity
+import androidx.compose.ui.platform.LocalFocusManager
+import androidx.compose.ui.text.TextStyle
+import androidx.compose.ui.text.input.ImeAction
+
+@OptIn(ExperimentalMaterial3Api::class, ExperimentalComposeUiApi::class)
+@Composable
+fun TypeaheadTextField(
+    value: String,
+    items: List<String>,
+    onValueChange: (String) -> Unit,
+    modifier: Modifier,
+    colors: TextFieldColors,
+    textStyle: TextStyle
+) {
+
+    var isFocused by remember { mutableStateOf(false) }
+    val focusManager = LocalFocusManager.current
+
+    ExposedDropdownMenuBox(
+        expanded = isFocused,
+        modifier = modifier,
+        onExpandedChange = {}
+    ) {
+
+        var dropDownWidth by remember { mutableStateOf(0) }
+
+        TextField(
+            value = value,
+            textStyle = textStyle,
+            onValueChange = {
+                onValueChange(it)
+            },
+            singleLine = true,
+            keyboardOptions = KeyboardOptions(
+                imeAction = ImeAction.Done,
+            ),
+            keyboardActions = KeyboardActions(
+                onDone = {
+                    focusManager.clearFocus()
+                }
+            ),
+            modifier = Modifier
+                .menuAnchor()
+                .onFocusChanged {
+                    isFocused = it.isFocused
+                }
+                .onSizeChanged { dropDownWidth = it.width }
+                .onKeyEvent { event ->
+                if (event.key == Key.Back || event.key == Key.Enter) {
+                    focusManager.clearFocus()
+                    true
+                }
+                false
+            },
+            colors = colors
+        )
+        ExposedDropdownMenu(
+            expanded = isFocused,
+            modifier = Modifier
+                .width(with(LocalDensity.current){dropDownWidth.toDp()}),
+            onDismissRequest = {  }
+        ) {
+            val filtered = items.filter { it.contains(value) && it.isNotBlank() }
+                filtered.forEach {
+                    DropdownMenuItem(
+                        onClick = {
+                            onValueChange(it)
+                            focusManager.clearFocus()
+                        },
+                        text = { Text(it) },
+                    )
+                }
+        }
+    }
+}

app/src/main/java/me/zobrist/tichucounter/ui/counter/CounterView.kt

@@ -35,6 +35,7 @@ fun Landscape(viewModel: ICounterViewModel) {
             TeamNamesView(
                 viewModel.teamNameA,
                 viewModel.teamNameB,
+                viewModel.distinctTeamNames,
                 { viewModel.updateNameA(it) },
                 { viewModel.updateNameB(it) }
             )
@@ -64,6 +65,7 @@ fun Portrait(viewModel: ICounterViewModel) {
         TeamNamesView(
             viewModel.teamNameA,
             viewModel.teamNameB,
+            viewModel.distinctTeamNames,
             { viewModel.updateNameA(it) },
             { viewModel.updateNameB(it) }
         )
@@ -111,6 +113,7 @@ internal class PreviewViewModel : ICounterViewModel {
     override var activeValue: String = currentScoreA
     override var inactiveValue: String = currentScoreB
     override var keyboardHidden: Boolean = false
+    override val distinctTeamNames: List<String> = listOf("TeamA", "asdffd", "TeamB", "really really long Team Name that is way too long")
 
     override fun focusLastInput() {
     }

app/src/main/java/me/zobrist/tichucounter/ui/counter/CounterViewModel.kt

@@ -1,6 +1,7 @@
 package me.zobrist.tichucounter.ui.counter
 
 import androidx.compose.runtime.getValue
+import androidx.compose.runtime.mutableStateListOf
 import androidx.compose.runtime.mutableStateOf
 import androidx.compose.runtime.setValue
 import androidx.compose.ui.focus.FocusRequester
@@ -9,6 +10,8 @@ import androidx.lifecycle.viewModelScope
 import dagger.hilt.android.lifecycle.HiltViewModel
 import kotlinx.coroutines.Job
 import kotlinx.coroutines.delay
+import kotlinx.coroutines.flow.collect
+import kotlinx.coroutines.flow.take
 import kotlinx.coroutines.launch
 import me.zobrist.tichucounter.data.entity.Round
 import me.zobrist.tichucounter.domain.Tichu
@@ -31,6 +34,7 @@ interface IKeyBoardViewModel {
     val activeValue: String
     val inactiveValue: String
     val keyboardHidden: Boolean
+    val distinctTeamNames: List<String>
 
     fun focusLastInput()
     fun updateOtherScore()
@@ -105,6 +109,9 @@ class CounterViewModel @Inject constructor(
     override var keyboardHidden by mutableStateOf(false)
         private set
 
+    override var distinctTeamNames by mutableStateOf(listOf<String>())
+        private set
+
     override var activeValue: String
         get() {
             return if (isBFocused) {
@@ -160,6 +167,12 @@ class CounterViewModel @Inject constructor(
                 }
             }
         }
+
+        viewModelScope.launch {
+            gameRepository.getDistinctTeamNames().collect() {
+                distinctTeamNames = it
+            }
+        }
     }
 
     override fun focusLastInput() {

app/src/main/java/me/zobrist/tichucounter/ui/counter/TeamNamesView.kt

@@ -4,18 +4,22 @@ import android.content.res.Configuration
 import androidx.compose.foundation.layout.*
 
 import androidx.compose.material3.*
-import androidx.compose.runtime.Composable
+import androidx.compose.runtime.*
 import androidx.compose.ui.Modifier
+import androidx.compose.ui.focus.onFocusChanged
+import androidx.compose.ui.res.stringResource
 import androidx.compose.ui.text.style.TextAlign
 import androidx.compose.ui.tooling.preview.Preview
 import androidx.compose.ui.unit.dp
 import me.zobrist.tichucounter.ui.AppTheme
+import me.zobrist.tichucounter.ui.composables.TypeaheadTextField
 
 @OptIn(ExperimentalMaterial3Api::class)
 @Composable
 fun TeamNamesView(
     nameA: String,
     nameB: String,
+    nameSuggestions: List<String>,
     updateA: (String) -> Unit,
     updateB: (String) -> Unit
 ) {
@@ -25,23 +29,26 @@ fun TeamNamesView(
     )
 
     Row {
-        TextField(
+
+        TypeaheadTextField(
             value = nameA,
-            textStyle = LocalTextStyle.current.copy(textAlign = TextAlign.Center),
+            items = nameSuggestions,
             onValueChange = { updateA(it) },
-            singleLine = true,
             modifier = Modifier.weight(1f),
-            colors = color
+            colors = color,
+            textStyle = LocalTextStyle.current.copy(textAlign = TextAlign.Center)
         )
 
-        TextField(
+        TypeaheadTextField(
             value = nameB,
-            textStyle = LocalTextStyle.current.copy(textAlign = TextAlign.Center),
+            items = nameSuggestions,
             onValueChange = { updateB(it) },
-            singleLine = true,
             modifier = Modifier.weight(1f),
-            colors = color
+            colors = color,
+            textStyle = LocalTextStyle.current.copy(textAlign = TextAlign.Center)
         )
+
+
     }
 }
 
@@ -50,6 +57,6 @@ fun TeamNamesView(
 @Composable
 private fun TeamNamesViewPreview() {
     AppTheme {
-        TeamNamesView("TeamA", "TeamB", {}, {})
+        TeamNamesView("TeamA", "TeamB", listOf("Test1", "Test3"), {}, {})
     }
 }