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Re: Disabling all rendering until page is full loaded

Mark,

The idea is leave what the webcontrol is presently displaying, then disable
all updates until it full loaded and then do a full and complete draw. So I
guess I've leave the else part of drawRect empty.

You could perhaps take a snapshot of the WebView when the new page load request happens (using NSCachedImageRep maybe?), and then have your subclass draw that instead of doing the NSRectFill().

I think the reason the sort of behaviour you're describing isn't supported (if, indeed, it isn't -- can anyone confirm?) is because it's generally considered better to see the new page loading, because users don't generally think "Okay, I'm twenty seconds away from finishing reading this page, so I'd better click on the link for the next page I want to see." (partly because the 'twenty' is not constant).

I guess I need to do [yourWebViewSubclass setNeedsDisplay:NO], when we start
to load the next page, and a [yourWebViewSubclass setNeedsDisplay:YES], when
fully loaded ???.

What setNeedsDisplay: does is simply mark a view or part of a view as needing redrawn next time around the event loop. With the asynchronous nature of HTTP loading, this will be happening all the time behind the scenes in your WebView and its internal WebFrameViews, so your original setNeedsDisplay:NO would quickly be overridden.

Best wishes,
Hamish

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 >Re: Disabling all rendering until page is full loaded (From: Mark Thomas <email@hidden>)



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