Merge pull request #126 from MohamedRejeb/0.5.x

Use initialSelectedDateMillis as the initial date on iOS if it exists.

Author: MohamedRejeb

calf-ui/src/iosMain/kotlin/com/mohamedrejeb/calf/ui/datepicker/AdaptiveDatePicker.ios.kt

@@ -10,10 +10,12 @@ import androidx.compose.runtime.remember
 import androidx.compose.ui.Modifier
 import androidx.compose.ui.interop.UIKitView
 import androidx.compose.ui.unit.dp
+import com.mohamedrejeb.calf.core.InternalCalfApi
+import kotlinx.cinterop.BetaInteropApi
 import kotlinx.cinterop.ExperimentalForeignApi
 import platform.UIKit.UIDatePicker
 
-@OptIn(ExperimentalForeignApi::class, ExperimentalMaterial3Api::class)
+@OptIn(ExperimentalForeignApi::class, ExperimentalMaterial3Api::class, InternalCalfApi::class, BetaInteropApi::class)
 @Composable
 actual fun AdaptiveDatePicker(
     state: AdaptiveDatePickerState,
@@ -29,6 +31,8 @@ actual fun AdaptiveDatePicker(
     }
     val datePickerManager = remember {
         DatePickerManager(
+            initialSelectedDateMillis = state.selectedDateMillis,
+            colors = colors,
             datePicker = datePicker,
             displayMode = state.initialUIKitDisplayMode,
             onSelectionChanged = { dateMillis ->

calf-ui/src/iosMain/kotlin/com/mohamedrejeb/calf/ui/datepicker/DatePickerManager.kt

@@ -1,6 +1,12 @@
 package com.mohamedrejeb.calf.ui.datepicker
 
+import androidx.compose.material3.DatePickerColors
+import androidx.compose.material3.ExperimentalMaterial3Api
 import androidx.compose.runtime.mutableStateOf
+import com.mohamedrejeb.calf.core.InternalCalfApi
+import com.mohamedrejeb.calf.ui.utils.applyTheme
+import com.mohamedrejeb.calf.ui.utils.isDark
+import com.mohamedrejeb.calf.ui.utils.toUIColor
 import kotlinx.cinterop.BetaInteropApi
 import kotlinx.cinterop.ExperimentalForeignApi
 import kotlinx.cinterop.ObjCAction
@@ -9,8 +15,14 @@ import platform.Foundation.*
 import platform.UIKit.*
 import platform.objc.sel_registerName
 
-@OptIn(ExperimentalForeignApi::class)
-class DatePickerManager internal constructor(
+@OptIn(
+    ExperimentalForeignApi::class,
+    ExperimentalMaterial3Api::class
+)
+@InternalCalfApi
+class DatePickerManager @OptIn(ExperimentalMaterial3Api::class) internal constructor(
+    initialSelectedDateMillis: Long?,
+    colors: DatePickerColors,
     private val datePicker: UIDatePicker,
     displayMode: UIKitDisplayMode,
     private val onSelectionChanged: (dateMillis: Long?) -> Unit,
@@ -28,15 +40,18 @@ class DatePickerManager internal constructor(
     @ObjCAction
     fun dateSelection() {
         onSelectionChanged(
-            stripTimeFromDate(datePicker.date).timeIntervalSince1970.toLong() * 1000
+            datePicker.date.timeIntervalSince1970.toLong() * 1000
         )
     }
 
     val datePickerWidth = mutableStateOf(0f)
     val datePickerHeight = mutableStateOf(0f)
 
     init {
-        datePicker.date = NSDate()
+        val date = initialSelectedDateMillis
+            ?.let { NSDate.dateWithTimeIntervalSince1970(it / 1000.0) }
+            ?: NSDate()
+        datePicker.setDate(date, animated = false)
         datePicker.locale = NSLocale.currentLocale
         datePicker.datePickerMode = UIDatePickerMode.UIDatePickerModeDate
         datePicker.preferredDatePickerStyle = when(displayMode) {