title: How to know when a WebView has finished rendering?
body: <p>In Apple's WebKit framwork, a WebView that has finished loading its resources sends a <code>webView:didFinishLoadForFrame:</code> message to its <code>frameLoadDelegate</code>. However, this only means that resources have been loaded, not that rendering is done… How can I detect that the WebView rendering is done? Among all the delegates of <code>WebView</code>, I couldn't find one that has the method I would need…</p>