Add the possibility to customise the background of Thread List

Author: nuno-vieira

Sources/StreamChatSwiftUI/ChatThreadList/ChatThreadListView.swift

@@ -72,6 +72,10 @@ public struct ChatThreadListView<Factory: ViewFactory>: View {
                     )
                 }
             }
+            .accentColor(colors.tintColor)
+            .background(
+                viewFactory.makeThreadListBackground(colors: colors)
+            )
             .modifier(viewFactory.makeThreadListHeaderViewModifier(title: title))
             .onAppear {
                 if !viewModel.hasLoadedThreads {

Sources/StreamChatSwiftUI/DefaultViewFactory.swift

@@ -1003,6 +1003,11 @@ extension ViewFactory {
         ChatThreadListHeaderViewModifier(title: title)
     }
 
+    public func makeThreadListBackground(colors: ColorPalette) -> some View {
+        Color(colors.background)
+            .edgesIgnoringSafeArea(.bottom)
+    }
+
     public func makeThreadListModifier() -> some ViewModifier {
         EmptyViewModifier()
     }

Sources/StreamChatSwiftUI/ViewFactory.swift

@@ -1019,6 +1019,12 @@ public protocol ViewFactory: AnyObject {
     /// Returns a view modifier applied to the thread list.
     func makeThreadListModifier() -> ThreadListModifier
 
+    associatedtype ThreadListBackground: View
+    /// Creates the background for the thread list.
+    /// - Parameter colors: The colors palette used in the SDK.
+    /// - Returns: The view shown as a background of the thread list.
+    func makeThreadListBackground(colors: ColorPalette) -> ThreadListBackground
+
     associatedtype ThreadListDividerItem: View
     /// Creates the thread list divider item.
     func makeThreadListDividerItem() -> ThreadListDividerItem