Tomas/persistent web view

Sources/Web/CrossmintWebView.swift

@@ -44,6 +44,12 @@ public struct CrossmintWebView: UIViewRepresentable {
     }
 
     public func makeUIView(context: Context) -> WKWebView {
+        if let existingWebView = webViewCommunicationProxy.webView {
+            webViewCommunicationProxy.onWebViewMessage = onWebViewMessage
+            webViewCommunicationProxy.onUnknownMessage = onUnknownMessage
+            return existingWebView
+        }
+
         let configuration = WKWebViewConfiguration()
         let userContentController = WKUserContentController()
 
@@ -74,5 +80,7 @@ public struct CrossmintWebView: UIViewRepresentable {
     }
 
     public func updateUIView(_ webView: WKWebView, context: Context) {
+        webViewCommunicationProxy.onWebViewMessage = onWebViewMessage
+        webViewCommunicationProxy.onUnknownMessage = onUnknownMessage
     }
 }

Sources/Web/WebViewCommunicationProxy.swift

@@ -32,7 +32,8 @@
 public class DefaultWebViewCommunicationProxy: NSObject, ObservableObject, WKScriptMessageHandler, WebViewCommunicationProxy {
     public let name = "crossmintMessageHandler"
 
-    public weak var webView: WKWebView?
+    public var webView: WKWebView?
+
     public var onWebViewMessage: (any WebViewMessage) -> Void = { _ in }
     public var onUnknownMessage: (String, Data) -> Void = { _, _ in }
 
@@ -48,6 +49,12 @@
         }
     }
 
+    deinit {
+        webView?.navigationDelegate = nil
+        webView?.configuration.userContentController.removeScriptMessageHandler(forName: name)
+        webView = nil
+    }
+
     public func loadURL(_ url: URL) async throws {
         guard let webView = webView else {