XML News from Friday, November 28, 2003

The W3C DOM Working Group has published Document Object Model (DOM) Level 3 Events Specification as a note. "This specification defines the Document Object Model Events Level 3, a generic platform- and language-neutral event system which allows registration of event handlers, describes event flow through a tree structure, and provides basic contextual information for each event. The Document Object Model Events Level 3 builds on the Document Object Model Events Level 2." CHanges since DOM Level 2 events include:

• Event groups so that stopPropagation() no longer stops event propagation entirely, only in a given event group.
• Within an event group, event listeners are now ordered
• Namespace support
• CustomEvent, TextEvent, KeyboardEvent, and MutationNameEvent interfaces
• The Event interface has a namespaceURI field and four new methods: isCustom(), stopImmediatePropagation(), isDefaultPrevented(), and initEventNS().
• The EventTarget interface has four new methods:

  addEventListenerNS(namespaceURI, type, listener, useCapture, evtGroup)
  removeEventListenerNS(namespaceURI, type, listener, useCapture) 
  willTriggerNS(namespaceURI, type)
  hasEventListenerNS(namespaceURI, type)

• The DocumentEvent interface has a canDispatch(namespaceURI, type) method.
• The UIEvent interface has an initUIEventNS() method.
• The MouseEvent interface has getModifierState(keyIdentifierArg) and initMouseEventNS(...) methods.
• The MutationEvent interface has an initMutationEventNS() method.
• The EventException class has a DISPATCH_REQUEST_ERR constant