[webkit-dev] Custom exception messages for IDL defined methods that raise DOMException.

Adam Barth abarth at webkit.org
Mon Nov 14 16:48:33 PST 2011

I'm not sure exactly what you're trying to do, but one option is to
add a new type of DOMException:


Another option is to customize the message from an existing exception
(here are the DOMCore exceptions):


If you show me the spec you're trying to implement, I might have a
more concept suggestion of the best way to implement it.


On Mon, Nov 14, 2011 at 4:44 PM, Michael Nordman <michaeln at google.com> wrote:
> I have a case where given an IDL defined method thats defined to raise a
> DOMException, I'd like to set a custom exception message from within the
> webcore implementation and have that message percolate up into script via
> the bindings layer(s) and be accessible as the exception.message attribute.
> I don't see a non-custom way of doing that and am wondering if there should
> be support for something like this w/o having to resort to custom bindings?
> The particular methods I'm looking at are the openDatabase(...) method of
> DOMWindow and WorkerContext, but this seems like it might be useful in other
> cases as well.
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