Re: Where does mozilla build a table of attribute for each node

On Jan 28, 6:07 pm, Boris Zbarsky <[email protected]> wrote:
> [email protected] wrote:
> > Thank you. I have searched for SetAttr, but the result does not show
> > nsHTMLContentSink.
>
> >http://lxr.mozilla.org/mozilla1.8.0/ident?i=SetAttr
>
> Uh... That URI shows hits in nsHTMLContentSink.
>
> > And why not all html elements have SetAttr() function?
>
> You mean the implementation?  It's on the superclass (nsGenericElement),
> generally speaking.  Only the ones that have to do something weird with
> attributes override it.
>
> -Boris

I am trying to override SetAttr() of the Embed Element so that if the
attribute value has a string 'false', i want to replace it with true'

<EMBED attr="false;something something something">
I want to replace it with  in c++:
<EMBED attr="true;something something something">

Can you please tell me how can I over-ride the SetAttr() to achieve
that?

The parameter 'aValue' is a const, so I can modify it:
SetAttr(PRInt32 aNamespaceID, nsIAtom* aName, nsIAtom* aPrefix,
                       const nsAString& aValue,
                       PRBool aNotify)

And how can I allocation memory for the new value string, replace
'false' with 'true' and then call the parent SetAttr()?
And do I need to free the memory of the 'aValue' passed in to this
SetAttr()?

Thank you.