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List:       webkit-dev
Subject:    [webkit-dev] An oddity with windowScriptObject:setValue and apple
From:       Ryan Grimm <grimm () xqdev ! com>
Date:       2009-02-01 22:34:29
Message-ID: CEE8A495-A25D-4DDA-9097-640F107156C9 () xqdev ! com
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This may sound very strange (it does to me), but I've been stumped by  
this problem for weeks now so I figured I'd ask the list.

I'm working on embedding WebKit into an existing Mac application that  
exposes an API.  The API gives me a CGrafPtr to render into.  So to  
get WebKit into the window I simply call:

HIViewRef webView, contentView;

WindowRef window = GetWindowFromPort(myCGrafPtr);
WebInitForCarbon();
HIWebViewCreate(&webView);
HIViewFindByID(HIViewGetRoot(window), kHIViewWindowContentID,  
&contentView);
HIViewSetFrame(webView, &bounds);
HIViewAddSubview(contentView, webView);
HIViewSetVisible(webView, true);

Which works fantastically.  I then try to expose some new functions to  
javascript via a windowScriptObject object:

WebView* nativeView;
nativeView = HIWebViewGetWebView(webView);

[[nativeView windowScriptObject] setValue:Metadata forKey:@"metadata"];

The addition of my Metadata object into javascript also succeeds.

However, here's crux of my problem.  Whenever one of these functions  
in javascript is called (eg: window.metadata.getUser()), all of the  
apple events that the main application has registered on the window  
become unusable.  For example, if you were to execute the following  
applescript:

tell application "ApplicationWithWebKit" to set user to "foobar"

It would return with an error of -1728: Can't get <reference>.  If you  
were to execute the same applescript before the javascript function is  
called it would execute correctly.

Anyone have any thoughts on what is going on here?

Thanks.

--Ryan
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