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Extension context information

Introduction

XForms specifies some context information for events. Orbeon Forms adds further context information to events.

All events

Orbeon Forms enhances the XML Events event() function to take a qualified name as parameter:
event($attribute-name as xs:QName) item()*
This allows namespacing attribute names, therefore better allowing for extension attributes.
On all events, the following extension attributes are supported:
Context
Type
Description
xxf:type
xs:string
event type (also known as event name), for example DOMActivate
xxf:targetid
xs:string
static id of the event target (event('xxf:target') is supported for backward compatibility)
xxf:absolute-targetid
xs:string
absolute id of the event target
xxf:observerid
xs:string
static id of the event observer
xxf:absolute-observerid
xs:string
absolute id of the event observer
xxf:bubbles
xs:boolean
whether the event is allowed to bubble or not
xxf:cancelable
xs:boolean
whether the event is cancelable or not
xxf:phase
xs:string
current event phase: capture, target, or bubbling
xxf:repeat-indexes
xs:string*
event target's current repeat indexes, if any, starting from the ancestor repeat
xxf:repeat-ancestors
xs:string*
event target's ancestor repeat ids, if any
xxf:target-prefixes
xs:string*
event target's id prefixes, if any, starting from the ancestor components. This will be empty unless the target is within an XBL component

UI events

These are:
  • DOMActivate
  • DOMFocusIn
  • DOMFocusOut
  • xforms-select
  • xforms-deselect
  • xforms-enabled
  • xforms-disabled
  • xforms-help
  • xforms-hint
  • xforms-valid
  • xforms-invalid
  • xforms-required
  • xforms-optional
  • xforms-readonly
  • xforms-readwrite
  • xforms-value-changed
The following extension attributes are supported:
Context
Type
Description
xxf:control-position
xs:integer
event target's position in the user interface. This is the control's static position, i.e. this does not reflect possible repeat iterations
xxf:binding
node()*
event target's single-item or repeat binding if any
xxf:label
xs:string?
event target's label value if any
xxf:hint
xs:string?
event target's hint value if any
xxf:help
xs:string?
event target's help value if any
xxf:alert
xs:string?
event target's alert value if any
On xforms-value-changed, the following extension attributes are supported:
  • event('xxf:value') [SINCE Orbeon Forms 4.4] The current value (that is, the value after the change) of the control.
On xforms-select, the following extension attributes are supported:
  • event('xxf:item-value') When this event is dispatched to in response to a selection control item being selected, returns the value of the selected item.
[SINCE Orbeon Forms 2018.2]
xxf:binding also returns the binding if the control has a binding but is non-relevant. In previous versions, if the control was non-relevant, xxf:binding always returned the empty sequence.

Other events

On xforms-submit-serialize, the following extension attributes are supported:
Context
Type
Description
xxf:binding
node()?
submission's single-node binding if any
xxf:serialization
xs:string
submission's requested serialization, e.g. application/xml, application/x-www-form-urlencoded, etc

See also