From 3caf48b04c1329c6f33f39f11e9af261b7ac99c9 Mon Sep 17 00:00:00 2001
From: Tobias Taschner <TcT2k@users.noreply.github.com>
Date: Mon, 8 Mar 2021 10:12:00 +0100
Subject: [PATCH] macOS: Implement window.print() in wxWebView

A WKUIDelegate method has to be implemented to make
a javascript calling window.print() working.
---
 src/osx/webview_webkit.mm | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/src/osx/webview_webkit.mm b/src/osx/webview_webkit.mm
index 8dae40f8b8..1457ece981 100644
--- a/src/osx/webview_webkit.mm
+++ b/src/osx/webview_webkit.mm
@@ -933,6 +933,15 @@ WX_API_AVAILABLE_MACOS(10, 12)
 }
 #endif // __MAC_OS_X_VERSION_MAX_ALLOWED
 
+// The following WKUIDelegateMethods are undocumented as of macOS SDK 11.0,
+// but are documented in the WebKit cocoa interface headers:
+// https://github.com/WebKit/WebKit/blob/main/Source/WebKit/UIProcess/API/Cocoa/WKUIDelegatePrivate.h
+
+- (void)_webView:(WKWebView *)webView printFrame:(WKFrameInfo*)frame
+{
+    webKitWindow->Print();
+}
+
 @end
 
 @implementation WebViewScriptMessageHandler