Preserve open positions carousel scroll

android/TradeBotMonitor/app/build.gradle.kts

@@ -10,7 +10,7 @@ android {
         applicationId = "xyz.kusoft.tradebotmonitor"
         minSdk = 26
         targetSdk = 36
-        versionCode = 15
+        versionCode = 16
-        versionName = "0.2.12"
+        versionName = "0.2.13"
     }
 }

android/TradeBotMonitor/app/src/main/java/xyz/kusoft/tradebotmonitor/MainActivity.kt

@@ -59,6 +59,7 @@ class MainActivity : Activity() {
         var exposure: TextView? = null,
         var positionCount: TextView? = null,
         var positionsContainer: LinearLayout? = null,
+        var positionsScroller: HorizontalScrollView? = null,
         var positionsList: LinearLayout? = null,
         var closedTradesContainer: LinearLayout? = null,
         val positions: MutableMap<String, PositionBinding> = linkedMapOf(),
@@ -258,7 +259,7 @@ class MainActivity : Activity() {
         val positionSignature = positionsSignature(data.positions)
         if (binding.positionSignature != positionSignature) {
             binding.positionsContainer?.let { container ->
-                rebuildPositionsContent(container, data.positions)
+                rebuildPositionsContent(container, data.positions, binding.positionsScroller?.scrollX ?: 0)
                 binding.positionSignature = positionSignature
             } ?: return false
         }
@@ -833,9 +834,10 @@ class MainActivity : Activity() {
         return section(null, body)
     }
 
-    private fun rebuildPositionsContent(container: LinearLayout, positions: List<PositionData>) {
+    private fun rebuildPositionsContent(container: LinearLayout, positions: List<PositionData>, preserveScrollX: Int = 0) {
         container.removeAllViews()
         assetsBindings?.positions?.clear()
+        assetsBindings?.positionsScroller = null
         assetsBindings?.positionsList = null
         if (positions.isEmpty()) {
             container.addView(text("Открытых позиций нет", 13f, Typeface.NORMAL, palette.muted))
@@ -852,7 +854,11 @@ class MainActivity : Activity() {
             isHorizontalScrollBarEnabled = false
             overScrollMode = View.OVER_SCROLL_NEVER
             addView(list, ViewGroup.LayoutParams(ViewGroup.LayoutParams.WRAP_CONTENT, ViewGroup.LayoutParams.WRAP_CONTENT))
+            if (preserveScrollX > 0) {
+                post { scrollTo(preserveScrollX, 0) }
+            }
         }
+        assetsBindings?.positionsScroller = scroller
         container.addView(scroller)
     }
 
@@ -1533,7 +1539,7 @@ class MainActivity : Activity() {
     }
 
     private fun positionsSignature(positions: List<PositionData>): String =
-        positions.joinToString("|") { positionKey(it) }
+        positions.map { positionKey(it) }.sorted().joinToString("|")
 
     private fun positionKey(position: PositionData): String =
         when {