How do I get the selected text from a WKWebView from objective-C

Question

I have a WKWebView.

When the user right-clicks on it, I can customize a contextual menu in my objective-c method. I\'d like to add a menu item only if the user has s

Answer 1

Swift 5 translation

webView.configuration.userContentController.add(self, name: "newSelectionDetected")
let scriptString = """
    function getSelectionAndSendMessage()
    {
        var txt = document.getSelection().toString() ;
        window.webkit.messageHandlers.newSelectionDetected.postMessage(txt);
    }
    document.onmouseup = getSelectionAndSendMessage;
    document.onkeyup = getSelectionAndSendMessage;
    document.oncontextmenu = getSelectionAndSendMessage;
"""
let script = WKUserScript(source: scriptString, injectionTime: .atDocumentEnd, forMainFrameOnly: true)
webView.configuration.userContentController.addUserScript(script)

func userContentController(_ userContentController: WKUserContentController, didReceive message: WKScriptMessage) {
    // Use message.body here
}