- From: Boris Zbarsky <bzbarsky@mit.edu>
- Date: Tue, 25 Oct 2005 09:50:11 -0500
- To: Andrew Shellshear <Andrew.Shellshear@cisra.canon.com.au>
- CC: www-svg@w3.org, SVG WG <w3c-svg-wg@w3.org>
Andrew Shellshear wrote: > We have added the following explanitary text to the description of > getCurrentFocusedObject in > http://www.w3.org/TR/2005/WD-SVGMobile12-20050413/svgudom.html#svg::SVGSVGElement > - > > Returns a reference to the object which has the focus. This returns a > DOMObject because the currently focused object may be an object outside > the SVG namespace. If the currently focused object is in the SVG > namespace, it should be cast to events::EventTarget. I'm trying to figure out how this would work in a strongly typed language (C++, say). Who's doing the casting? For example, the C++ binding in Gecko for the IDL involved would look like (unrolling some typedefs): int GetCurrentFocusedObject(ISupports **); Now how is the suggested explanatory text supposed to be implemented in this situation, exactly? Is there a reason not to just return a Node to start with? Then the caller could actually check for the SVG namespace and cast to events::EventTarget or EventTarget or whatever is appropriate as needed. Or are there cases when the "focused object" is not a Node? If so, what does it mean for it to be "in the SVG namespace"? -Boris
Received on Tuesday, 25 October 2005 14:50:56 UTC