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       ScXMLEventTarget -

       base class for event targets for inter-system event communication


       #include <Inventor/scxml/ScXMLEventTarget.h>

       Inherits ScXMLObject.

       Inherited by ScXMLStateMachine, and SoScXMLNavigationTarget.

   Public Member Functions
       virtual SoType getTypeId (void) const =0
           Returns the type identification of an object derived from a class inheriting SoBase.
           This is used for run-time type checking and 'downward' casting.
       virtual void setEventTargetType (const char *targettype)
       const char * getEventTargetType (void) const
       virtual void setEventTargetName (const char *targetname)
       const char * getEventTargetName (void) const
       virtual const ScXMLEvent * getCurrentEvent (void) const
       virtual void queueEvent (const ScXMLEvent *event)
       virtual void queueEvent (const SbName &eventid)
       virtual SbBool processEventQueue (void)
       virtual SbBool sendExternalEvent (const ScXMLSendElt *sendelt)
       virtual SbBool sendInternalEvent (const ScXMLEventElt *sendelt)
       virtual void queueInternalEvent (const ScXMLEvent *event)
       virtual void queueInternalEvent (const SbName &eventid)

   Static Public Member Functions
       static SoType getClassTypeId (void)
       static void initClass (void)
       static void cleanClass (void)

   Protected Member Functions
       virtual void setCurrentEvent (const ScXMLEvent *event)
       virtual const ScXMLEvent * getNextEvent (void)
       virtual const ScXMLEvent * getNextInternalEvent (void)
       virtual const ScXMLEvent * getNextExternalEvent (void)
       virtual SbBool processOneEvent (const ScXMLEvent *event)

   Static Protected Member Functions
       static void registerEventTarget (ScXMLEventTarget *target, const char *sessionid=NULL)
       static void unregisterEventTarget (ScXMLEventTarget *target, const char *sessionid=NULL)
       static ScXMLEventTarget * getEventTarget (const char *targettype, const char *targetname,
           const char *sessionid=NULL)

   Protected Attributes
       char * targetname
       char * targettype
       const ScXMLEvent * currentevent
       SbBool isprocessingqueue

Detailed Description

       base class for event targets for inter-system event communication

       This class manages inter-communication between SCXML systems and systems intended for
       communicating with such systems. It also manages the external event queue for such systems
       (systems may also have internal event queues).

           Coin 3.1

Member Function Documentation

   virtual SoType ScXMLEventTarget::getTypeId (void) const [pure virtual]
       Returns the type identification of an object derived from a class inheriting SoBase. This
       is used for run-time type checking and 'downward' casting.

       See Also:
           SoBase::getTypeId() const

       Implements ScXMLObject.

       Implemented in ScXMLStateMachine, SoScXMLNavigationTarget, SoScXMLDollyTarget,
       SoScXMLZoomTarget, SoScXMLPanTarget, SoScXMLRotateTarget, SoScXMLSeekTarget,
       SoScXMLSpinTarget, SoScXMLStateMachine, SoScXMLFlightControlTarget, SoScXMLMiscTarget, and

   const ScXMLEvent * ScXMLEventTarget::getCurrentEvent (void) const [inline],  [virtual]
       This method returns the current event during event processing, and NULL when not
       processing events.

       Event processing is in special cases done with NULL as the current event, as for instance
       during state machine initialization.

   void ScXMLEventTarget::queueEvent (const ScXMLEvent *event) [virtual]
       Queues an ScXMLEvent event. The event is copied, and can be deleted as soon as the
       function return.

   void ScXMLEventTarget::queueEvent (const SbName &eventid) [virtual]
       Queues an ScXMLEvent event that has the given eventid as its event name.

   void ScXMLEventTarget::setCurrentEvent (const ScXMLEvent *event) [protected],  [virtual]
       Sets a pointer for the event that is 'current' during event processing. This is an
       internal method, and the updating of the current event should be handled automatically.

   SbBool ScXMLEventTarget::processOneEvent (const ScXMLEvent *event) [protected],  [virtual]
       This function processes one event. The base class implementation does nothing.

       Reimplemented in ScXMLStateMachine, SoScXMLPanTarget, SoScXMLDollyTarget,
       SoScXMLRotateTarget, SoScXMLZoomTarget, SoScXMLFlightControlTarget, SoScXMLSeekTarget,
       SoScXMLSpinTarget, SoScXMLMiscTarget, and SoScXMLMotionTarget.


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