fix: initial visible rows

ios/ContainerView.swift

@@ -36,7 +36,7 @@ class ContainerView: UIView {
   @objc var freezeFirstColumn: Bool = false
   @objc var isDataView: Bool = false
   @objc var isPercent: Bool = false
-  
+
 
   override init(frame: CGRect) {
     super.init(frame: frame)
@@ -85,12 +85,6 @@ class ContainerView: UIView {
       do {
         let json = try JSONSerialization.data(withJSONObject: size)
         dataSize = try JSONDecoder().decode(DataSize.self, from: json)
-        guard let collectionView = collectionView else {
-          return
-        }
-        DispatchQueue.main.async {
-          collectionView.signalVisibleRows()
-        }
       } catch {
         print(error)
       }
@@ -192,17 +186,25 @@ class ContainerView: UIView {
       guard let dataRows = dataRows else {
         return
       }
-      
+
       if let dataColumns = dataColumns {
         columnWidths.loadDefaultWidths(bounds, columnCount: dataColumns.count, dataRows: dataRows)
       }
 
       createHScrollView()
       createHeaderView()
+      createTotalsView()
       createDataCollectionView()
       createGrabbers()
       createTotalCellsView()
-      createTotalsView()
+
+      guard let collectionView = collectionView else {
+        return
+      }
+
+      DispatchQueue.main.async {
+        collectionView.initialSignalVisibleRows()
+      }
     }
   }
 
@@ -229,9 +231,6 @@ class ContainerView: UIView {
     collectionView.resizeCells(withFrame: getCollectionViewFrame())
     repositionGrabbers()
     repositionTotalCellsView()
-    DispatchQueue.main.async {
-      collectionView.signalVisibleRows()
-    }
   }
 
   fileprivate func createHScrollView() {
@@ -290,7 +289,7 @@ class ContainerView: UIView {
       guard let dataColumns = dataColumns else {
         return
       }
-      
+
       guard let cellStyle = cellStyle else {
         return
       }
@@ -350,7 +349,7 @@ class ContainerView: UIView {
     guard let headerView = headerView else {
       return CGRect.zero
     }
-
+        
     let headerHeight = tableTheme?.headerHeight ?? 54
     var y = headerHeight
     let width = Int(headerView.frame.width)
@@ -359,23 +358,14 @@ class ContainerView: UIView {
       totalHeight -= CGFloat(headerHeight)
       if let totals = totals {
         if totals.position != "bottom" {
-          y += headerHeight
+            y += headerHeight
         }
       }
     }
     return CGRect(x: 0, y: y, width: width, height: Int(totalHeight))
   }
 
   fileprivate func createTotalCellsView() {
-    guard let collectionView = collectionView else {
-      return
-    }
-
-    guard let dataSize = dataSize else {
-      return
-    }
-
-
     if(totalCellsView == nil) {
       guard let height = tableTheme?.headerHeight else { return }
       let frame = CGRect(x: 0, y: self.frame.height - CGFloat(height), width: self.frame.width, height: CGFloat(height))
@@ -385,12 +375,15 @@ class ContainerView: UIView {
       view.createTextView()
       addSubview(view)
       self.totalCellsView = view
-      collectionView.totalCellsView = view
-      view.totalRows = dataSize.qcy ?? 0
-      DispatchQueue.main.async {
-        collectionView.signalVisibleRows()
+      collectionView?.totalCellsView = view
+      if let dataSize = dataSize {
+        view.totalRows = dataSize.qcy ?? 0
+        if let collectionView = collectionView {
+          DispatchQueue.main.async {
+            collectionView.signalVisibleRows()
+          }
+        }
       }
-
     }
   }
 

ios/DataCollectionView.swift

@@ -229,7 +229,7 @@ class DataCollectionView: UIView, UICollectionViewDataSource, UICollectionViewDe
           }
         }
       }
-
+      
       let arrayOfVisibleItems = childCollectionView.indexPathsForVisibleItems.sorted()
       let firstItem = arrayOfVisibleItems.first;
       let lastItem = arrayOfVisibleItems.last;
@@ -239,6 +239,25 @@ class DataCollectionView: UIView, UICollectionViewDataSource, UICollectionViewDe
     }
   }
 
+
+  public func initialSignalVisibleRows() {
+    guard let childCollectionView = childCollectionView else {
+      return
+    }
+
+    guard let totalCellsView = totalCellsView else {
+      return
+    }
+
+    let arrayOfVisibleItems = childCollectionView.indexPathsForVisibleItems.sorted()
+    let firstItem = arrayOfVisibleItems.first;
+    let lastItem = arrayOfVisibleItems.last;
+
+    if let firstItem = firstItem, let lastItem = lastItem {
+      totalCellsView.updateTotals(first: firstItem, last: lastItem)
+    }
+  }
+
   public func resizeCells (withFrame frame: CGRect) {
     guard let childCollectionView = childCollectionView else {
       return