The design and specification of the SMIL DOM must meet the following set
Inherit DOM Level 2 core functionality - the SMIL DOM will be based
upon the generic Core DOM foundation.
Support constraints on DOM core functionality (e.g. mutation),
especially at runtime.
Support both SMIL documents as well as hybrid documents that
integrate XML/HTML and SMIL functionality.
Support and reflect the modularization of SMIL functionality.
It must be possible to design hybrid documents combining XML/HTML and
SMIL functionality, that can in turn support a hybrid or combined
SMIL specific requirements:
Support SMIL specific elements. It must be possible to access and
manipulate all SMIL elements within a SMIL document or a hybrid
document that integrates XML and SMIL modules.
Support SMIL specific attributes and methods. It must be possible to
access and manipulate the SMIL attributes and methods on SMIL
elements as well as XML/HTML elements in a hybrid documents.
Support SMIL specific events, including:
- Specification of statically defined SMIL events
- Support for dynamically defined events
- The ability to create and raise all the above events
Support SMIL semantics. This includes various constraints on document
structure, attribute values and method invocation.
Define basic control interface for media player/renderers. Do not
define a plug-in API, but rather just the timing and sync control
It is not yet clear what all the requirements ([DOM Requirements])
on the SMIL DOM will be related to the modularization of SMIL
functionality. While the HTML Working Group is also working on
modularization of XHTML, a modularized HTML DOM is yet to be defined. In
addition, there is no general mechanism yet defined for combining DOM
modules for a particular profile.