Merge pull request #18 from Mindera/ALFMOB-52-remove-back-button-on-w…

…ishlist-screen-when-there-is-nothing-to-go-back-for

[ALFMOB-52]: Remove back button on wishlist screen when there is nothing to go back for

Alfie/Alfie/Helpers/ToolbarItemProvider.swift

@@ -55,7 +55,11 @@ enum ToolbarItemProvider {
                 .productDetails,
                 .productListing,
                 .categoryList:
-                backButton(with: coordinator)
+                if coordinator.canPop() {
+                    backButton(with: coordinator)
+                } else {
+                    EmptyView()
+                }
 
             default:
                 EmptyView()

Alfie/Alfie/Navigation/Coordinator.swift

@@ -29,6 +29,10 @@ final class Coordinator: ObservableObject, CoordinatorProtocol {
         navigationAdapter.popToRoot()
     }
 
+    public func canPop() -> Bool {
+        navigationAdapter.canPop()
+    }
+
     // MARK: Search
 
     public func openSearch() {

Alfie/Packages/Navigation/Sources/NavigationAdapter.swift

@@ -105,3 +105,13 @@ extension NavigationAdapter {
         }
     }
 }
+
+// MARK: - Auxiliar methods
+
+extension NavigationAdapter {
+    public func canPop() -> Bool {
+        modalPath.count >= 1 ||
+        path.count >= 1 ||
+        isPresentingFullScreenOverlay
+    }
+}