T16622735: share extension background

Author: tomekkuzma-mega

iMEGA/Extensions/MEGAShare/ShareDestinationTableViewController+TableViewDataSource.swift

@@ -112,11 +112,50 @@ extension ShareDestinationTableViewController {
         footer.textLabel?.textColor = secondaryTextColor
     }
 
+    private var designTokenEnabled: Bool {
+        DIContainer.featureFlagProvider.isFeatureFlagEnabled(for: .designToken)
+    }
+    
     private var secondaryTextColor: UIColor {
-        if DIContainer.featureFlagProvider.isFeatureFlagEnabled(for: .designToken) {
+        if designTokenEnabled {
             TokenColors.Text.secondary
         } else {
             UIColor.secondaryLabel
         }
     }
+    
+    private func separatorColor(for traitCollection: UITraitCollection) -> UIColor {
+        if designTokenEnabled {
+            return TokenColors.Border.strong
+        } else {
+            switch traitCollection.userInterfaceStyle {
+            case .unspecified, .light:
+                return UIColor.gray3C3C4330
+            case .dark:
+                return UIColor.gray54545865
+            @unknown default:
+                return UIColor.gray3C3C4330
+            }
+        }
+    }
+    
+    private func secondaryBackground(for traitCollection: UITraitCollection) -> UIColor {
+        if designTokenEnabled {
+            return TokenColors.Background.page
+        } else {
+            switch traitCollection.userInterfaceStyle {
+            case .unspecified, .light:
+                return UIColor.whiteF7F7F7
+            case .dark:
+                return UIColor.black1C1C1E
+            @unknown default:
+                return UIColor.black1C1C1E
+            }
+        }
+    }
+    
+    @objc func updateAppearance() {
+        tableView.separatorColor = separatorColor(for: traitCollection)
+        tableView.backgroundColor = secondaryBackground(for: traitCollection)
+    }
 }

iMEGA/Extensions/MEGAShare/ShareDestinationTableViewController.m

@@ -76,12 +76,6 @@ - (void)traitCollectionDidChange:(UITraitCollection *)previousTraitCollection {
 
 #pragma mark - Private
 
-- (void)updateAppearance {
-    self.tableView.separatorColor = [UIColor mnz_separatorForTraitCollection:self.traitCollection];
-    self.tableView.backgroundColor = [UIColor pageBackgroundForTraitCollection:self.traitCollection];
-    [self.tableView reloadData];
-}
-
 - (void)hideKeyboard {
     [self.view endEditing:YES];
 }

iMEGA/Extensions/MEGAShare/Views/ShareAttachmentCellView.swift

@@ -32,7 +32,7 @@ struct ShareAttachmentCellView: View {
 
                         Text(viewModel.fileExtension)
                             .font(.system(size: 15))
-                            .foregroundColor(foregroundColor)
+                            .foregroundColor(foregroundColorFileExtension)
                             .fixedSize()
                     }
                 }
@@ -55,6 +55,12 @@ struct ShareAttachmentCellView: View {
         }
     }
 
+    var foregroundColorFileExtension: Color {
+        isDesignTokenEnabled
+        ? TokenColors.Text.secondary.swiftUI
+        : Color(UIColor.gray8E8E93)
+    }
+    
     var backgroundColor: Color {
         if isDesignTokenEnabled {
             TokenColors.Background.page.swiftUI