SMIL Timing Support
Our timesheet scheduler already supports most of the common SMIL Timing/Timesheets subset:
- all timeContainer values: <par>, <seq>, <excl>
- all timeAction values
- positive, numeric values of begin/end and dur time attributes
- repeatCount and repeatDur attributes.
- first, prev, next, last attributes on <excl> AND <seq> time containers
These attributes are partially supported:
- the fill/fillDefault attributes support 'hold', 'freeze', and 'default' values;
- the implemented behavior for "restart" of elements is "whenNotActive"
- The endSync attribute isn't supported yet.
Additional attribute not included in the specification:
- mediaSync, for synchronization with audio/video elements. This attribute has the same purpose as syncMaster attribute, but using a more convenient syntax for our content in HTML.
Event-values allow to describe user interactions in a declarative way (e.g. begin= "elementID.click") and greatly ease the design of complex scenarios. They are supported by our timesheet scheduler, except using time offsets with an event value (eg. begin="elementID.click + 1s"). It supports multiple event-values in begin/end attributes.
SMIL Timesheet Specific Elements
Our timesheet parser supports all the SMIL Timing nodes above in both internal and external timesheets, as well as the Timesheet-specific <item> element and its attributes:
- index(selector, indexStart) function
Regarding the <timesheet> element, the media attribute is not supported yet. The src attribute is not supported, instead we use the html's <link> element to load external timesheets.
The <prefetch> element is not supported, and I don't plan to support it. It is defined in the SMIL PrefetchControl module and mentioned in the SMIL Timesheets draft. The reasons why I don't plan to support it are explained in this page.
Our timesheet scheduler doesn’t support any of the <animate>, <animateMotion>, <animateColor> or <set> elements. These elements are defined in the SMIL BasicAnimation module and mentionned in the SMIL Timesheets draft, but they aren’t part of the SMIL Timing recommendation.