Generating a click event in a WebView - objective-c

Question

I am trying to generate a click event on a particular DOMNode via a menu item on the Mac. I thought this would be pretty simple however, I have seemed to hit a roadblock and not sure where I went wrong.
DOMDocument* domDocument=[webView mainFrameDocument];
DOMEvent* event = [domDocument createEvent:#"HTMLEvents"];
[event initEvent:#"click" canBubbleArg:YES cancelableArg:NO];
[[[domDocument getElementsByClassName:#"logout clickable"] item:0] dispatchEvent:event];
DOMEvent seems to be lacking a few methods that I had expected to see. I was expecting to have to code like this.
DOMEvent* event = [domDocument createEvent:#"MouseEvents"];
[event initMouseEvent:#"click" canBubbleArg:YES cancelableArg:NO];
However, mouse events don't seem to be available. I would appreciate any help.

Answer 1

This approach has worked for me in the past:
DOMElement *el = // find element somehow
DOMDocument *doc = [el ownerDocument];
DOMAbstractView *window = [doc defaultView];
DOMUIEvent *evt = (DOMUIEvent *)[doc createEvent:#"UIEvents"];
[evt initUIEvent:#"click" canBubble:YES cancelable:YES view:window detail:1];
[el dispatchEvent:evt];
I believe that is all standard DOM2 Events module APIs. I think I found this solution from looking at the JavaScript on this MozDev createEvent article.
Also note the -[DOMHTMLElement click] method in WebKit's DOMHTMLElement.h which is marked as AVAILABLE_AFTER_WEBKIT_VERSION_5_1.
Finally, I have occasionally had to resort to something hackier to fully simulate a user "mouse click" and all the DOM events that usually accompany it. I would only try this if nothing else above works (this is complex, ugly and brittle):
WebView *webView = // get web view
DOMElement *el = // find element somehow
id relatedTarget = [(DOMHTMLDocument *)[el ownerDocument] body];
[el dispatchMouseEventType:#"mouseover" clickCount:0 ctrlKey:NO altKey:NO shiftKey:NO metaKey:NO button:0 relatedTarget:relatedTarget webView:webView];
[el dispatchMouseEventType:#"mousemove" clickCount:0 ctrlKey:NO altKey:NO shiftKey:NO metaKey:NO button:0 relatedTarget:nil webView:webView];
[el dispatchMouseEventType:#"mousedown" clickCount:1 ctrlKey:NO altKey:NO shiftKey:NO metaKey:NO button:0 relatedTarget:nil webView:webView];
[el dispatchMouseEventType:#"click" clickCount:1 ctrlKey:NO altKey:NO shiftKey:NO metaKey:NO button:0 relatedTarget:nil webView:webView];
[el dispatchMouseEventType:#"mouseup" clickCount:1 ctrlKey:NO altKey:NO shiftKey:NO metaKey:NO button:0 relatedTarget:nil webView:webView];
[el dispatchMouseEventType:#"mousemove" clickCount:0 ctrlKey:NO altKey:NO shiftKey:NO metaKey:NO button:0 relatedTarget:nil webView:webView];
[el dispatchMouseEventType:#"mouseout" clickCount:0 ctrlKey:NO altKey:NO shiftKey:NO metaKey:NO button:0 relatedTarget:relatedTarget webView:webView];
I have a lot of this code in my open source project TDAppKit on Google Code.