Fix keyboard for AddSubtractPage

feature/datecalculator/src/main/java/com/sadellie/unitto/feature/datecalculator/DateCalculatorScreen.kt

@@ -64,6 +64,7 @@ internal fun DateCalculatorScreen(
     val differenceLabel = stringResource(R.string.difference)
     val focusManager = LocalFocusManager.current
     var topBarShown by remember { mutableStateOf(true) }
+    var showKeyboard by remember { mutableStateOf(false) }
 
     val allTabs = remember { mutableListOf(addSubtractLabel, differenceLabel) }
     val pagerState = rememberPagerState { allTabs.size }
@@ -101,11 +102,14 @@ internal fun DateCalculatorScreen(
             ) { page ->
                 when (page) {
                     0 -> AddSubtractPage(
-                        toggleTopBar = { topBarShown = it }
+                        toggleTopBar = { topBarShown = it },
+                        showKeyboard = showKeyboard,
+                        toggleKeyboard = {showKeyboard = it }
                     )
                     1 -> {
                         focusManager.clearFocus(true)
                         topBarShown = true
+                        showKeyboard = false
 
                         DateDifferencePage()
                     }

feature/datecalculator/src/main/java/com/sadellie/unitto/feature/datecalculator/addsubtract/AddSubtractPage.kt

@@ -34,12 +34,13 @@ import androidx.compose.foundation.layout.Arrangement
 import androidx.compose.foundation.layout.Column
 import androidx.compose.foundation.layout.ExperimentalLayoutApi
 import androidx.compose.foundation.layout.FlowRow
-import androidx.compose.foundation.layout.PaddingValues
+import androidx.compose.foundation.layout.WindowInsets
 import androidx.compose.foundation.layout.fillMaxHeight
 import androidx.compose.foundation.layout.fillMaxSize
 import androidx.compose.foundation.layout.fillMaxWidth
 import androidx.compose.foundation.layout.padding
-import androidx.compose.foundation.lazy.LazyColumn
+import androidx.compose.foundation.rememberScrollState
+import androidx.compose.foundation.verticalScroll
 import androidx.compose.material.icons.Icons
 import androidx.compose.material.icons.filled.Event
 import androidx.compose.material.icons.outlined.Add
@@ -83,12 +84,16 @@ import java.time.ZonedDateTime
 internal fun AddSubtractPage(
     viewModel: AddSubtractViewModel = hiltViewModel(),
     toggleTopBar: (Boolean) -> Unit,
+    showKeyboard: Boolean,
+    toggleKeyboard: (Boolean) -> Unit,
 ) {
     val uiState = viewModel.uiState.collectAsStateWithLifecycle().value
 
     AddSubtractView(
         uiState = uiState,
         toggleTopBar = toggleTopBar,
+        showKeyboard = showKeyboard,
+        toggleKeyboard = toggleKeyboard,
         updateStart = viewModel::updateStart,
         updateYears = viewModel::updateYears,
         updateMonths = viewModel::updateMonths,
@@ -105,6 +110,8 @@ internal fun AddSubtractPage(
 private fun AddSubtractView(
     uiState: AddSubtractState,
     toggleTopBar: (Boolean) -> Unit,
+    showKeyboard: Boolean,
+    toggleKeyboard: (Boolean) -> Unit,
     updateStart: (ZonedDateTime) -> Unit,
     updateYears: (TextFieldValue) -> Unit,
     updateMonths: (TextFieldValue) -> Unit,
@@ -113,18 +120,22 @@ private fun AddSubtractView(
     updateMinutes: (TextFieldValue) -> Unit,
     updateAddition: (Boolean) -> Unit,
 ) {
-    var dialogState by remember { mutableStateOf(DialogState.NONE) }
     val mContext = LocalContext.current
+    val focusManager = LocalFocusManager.current
+    val landscape = !isPortrait()
+
+    var dialogState by remember { mutableStateOf(DialogState.NONE) }
     var addSymbol: ((TextFieldValue) -> Unit)? by remember { mutableStateOf(null) }
     var focusedTextFieldValue: TextFieldValue? by remember { mutableStateOf(null) }
-    val showKeyboard = (addSymbol != null) and (focusedTextFieldValue != null)
-    val landscape = !isPortrait()
-    val focusManager = LocalFocusManager.current
 
     LaunchedEffect(showKeyboard, landscape) {
         toggleTopBar(!(showKeyboard and landscape))
     }
 
+    LaunchedEffect(addSymbol, focusedTextFieldValue) {
+        toggleKeyboard((addSymbol != null) and (focusedTextFieldValue != null))
+    }
+
     BackHandler(showKeyboard) {
         focusManager.clearFocus()
         addSymbol = null
@@ -147,16 +158,17 @@ private fun AddSubtractView(
                         contentDescription = null,
                     )
                 }
-            }
+            },
+            contentWindowInsets = WindowInsets(0,0,0,0)
         ) {
-            LazyColumn(
-                modifier = Modifier.padding(horizontal = 16.dp),
-                verticalArrangement = Arrangement.spacedBy(16.dp),
-                contentPadding = PaddingValues(top = 16.dp)
+            Column(
+                modifier = Modifier
+                    .verticalScroll(rememberScrollState())
+                    .padding(horizontal = 16.dp),
+                verticalArrangement = Arrangement.spacedBy(2.dp),
             ) {
-                item("dates") {
                 FlowRow(
-                        modifier = Modifier,
+                    modifier = Modifier.padding(vertical = 16.dp),
                     maxItemsInEachRow = 2,
                     verticalArrangement = Arrangement.spacedBy(16.dp),
                     horizontalArrangement = Arrangement.spacedBy(16.dp)
@@ -181,9 +193,7 @@ private fun AddSubtractView(
                         dateTime = uiState.result,
                     )
                 }
-                }
 
-                item("modes") {
                 SingleChoiceSegmentedButtonRow(
                     modifier = Modifier
                         .fillMaxWidth(),
@@ -205,10 +215,7 @@ private fun AddSubtractView(
                         Icon(Icons.Outlined.Remove, null)
                     }
                 }
-                }
 
-                item("textFields") {
-                    Column {
                 TimeUnitTextField(
                     modifier = Modifier.onFocusEvent {
                         if (it.hasFocus) {
@@ -221,6 +228,7 @@ private fun AddSubtractView(
                     label = stringResource(R.string.date_difference_years),
                     formatterSymbols = uiState.formatterSymbols
                 )
+
                 TimeUnitTextField(
                     modifier = Modifier.onFocusEvent {
                         if (it.hasFocus) {
@@ -233,6 +241,7 @@ private fun AddSubtractView(
                     label = stringResource(R.string.date_difference_months),
                     formatterSymbols = uiState.formatterSymbols
                 )
+
                 TimeUnitTextField(
                     modifier = Modifier.onFocusEvent {
                         if (it.hasFocus) {
@@ -245,6 +254,7 @@ private fun AddSubtractView(
                     label = stringResource(R.string.date_difference_days),
                     formatterSymbols = uiState.formatterSymbols
                 )
+
                 TimeUnitTextField(
                     modifier = Modifier.onFocusEvent {
                         if (it.hasFocus) {
@@ -257,6 +267,7 @@ private fun AddSubtractView(
                     label = stringResource(R.string.date_difference_hours),
                     formatterSymbols = uiState.formatterSymbols
                 )
+
                 TimeUnitTextField(
                     modifier = Modifier.onFocusEvent {
                         if (it.hasFocus) {
@@ -271,8 +282,6 @@ private fun AddSubtractView(
                 )
             }
         }
-            }
-        }
         AnimatedVisibility(
             visible = showKeyboard,
             enter = slideInVertically { it / 2 } + fadeIn(),
@@ -343,6 +352,8 @@ fun AddSubtractViewPreview() {
             years = TextFieldValue("12")
         ),
         toggleTopBar = {},
+        showKeyboard = false,
+        toggleKeyboard = {},
         updateStart = {},
         updateYears = {},
         updateMonths = {},