delegates and wkscriptmessage (#32)

* delegates and wkscriptmessage

* fix `body`

darwin/app_kit/nsapplication.nim

@@ -58,3 +58,5 @@ proc stopModal*(self: NSApplication) {.objc: "stopModal".}
 
 # Abort a specific modal session
 proc abortModal*(self: NSApplication) {.objc: "abortModal".}
+
+proc setDelegate*(s: NSApplication, d: NSObject) {.objc: "setDelegate:".}

darwin/app_kit/nswindow.nim

@@ -44,3 +44,4 @@ proc orderFrontRegardless*(s: NSWindow) {.objc.}
 proc setReleasedWhenClosed*(s: NSWindow, b: BOOL) {.objc: "setReleasedWhenClosed:".}
 proc setBackgroundColor*(s: NSWindow, c: NSColor) {.objc: "setBackgroundColor:".}
 proc makeKeyAndOrderFront*(s: NSWindow, sender: ID) {.objc: "makeKeyAndOrderFront:".}
+proc setDelegate*(s: NSWindow, d: NSObject) {.objc: "setDelegate:".}

darwin/web_kit.nim

@@ -1,6 +1,6 @@
 import web_kit / [wkwebview, wkwebviewconfiguration, wknavigation,
     wkusercontentcontroller, wkuserscript, wkpreferences, wknavigationdelegate,
-    wknavigationresponse, wkopenpanelparameters, wkframeinfo]
+    wknavigationresponse, wkopenpanelparameters, wkframeinfo, wkscriptmessage]
 export wkwebview, wkwebviewconfiguration, wknavigation, wkusercontentcontroller,
     wkuserscript, wkpreferences, wknavigationdelegate, wknavigationresponse,
-        wkopenpanelparameters, wkframeinfo
+        wkopenpanelparameters, wkframeinfo, wkscriptmessage

darwin/web_kit/wkscriptmessage.nim

@@ -0,0 +1,11 @@
+import ../objc/[runtime]
+import ./wkwebview
+
+type
+  WKScriptMessage* = ptr object of NSObject
+
+proc name*(self: WKScriptMessage): NSString {.objc: "name".}
+
+proc body*(self: WKScriptMessage): ID {.objc.}
+
+proc webView*(self: WKScriptMessage): WKWebView {.objc: "webView".}

darwin/web_kit/wkwebview.nim

@@ -22,3 +22,5 @@ proc loadRequest*(self: WKWebView, request: NSURLRequest): WKNavigation {.objc:
 proc configuration*(self: WKWebView): WKWebViewConfiguration {.objc: "configuration".}
 
 proc evaluateJavaScript*(self: WKWebView, javaScriptString: NSString, completionHandler: Block[proc (res: ID; err: NSError)]) {.objc: "evaluateJavaScript:completionHandler:".}
+
+proc setNavigationDelegate*(s: WKWebview, d: NSObject) {.objc: "setNavigationDelegate:".}