org.opa.action
Class OPADefaultActionManager

java.lang.Object
  org.opa.action.OPADefaultActionManager

All Implemented Interfaces:

java.util.EventListener, OPAActionManager, OPAManager, java.beans.PropertyChangeListener

public class OPADefaultActionManager

extends java.lang.Object

implements OPAActionManager, java.beans.PropertyChangeListener

This class provides default implementation of the OPAActionManager interface.

Constructor Summary

OPADefaultActionManager()
Creates a new instance of OPADefaultActionManager

Method Summary

void	doAction(OPAAction action) Performs a context-sensitive action based on the focussed GUI component.
void	load() Loads the OPAManager.
void	propertyChange(java.beans.PropertyChangeEvent evt) Listens for changes in GUI focus.
void	registerAction(OPAAction action) Used by OPA modules to register an OPAAction with OPA.
void	registerBundle(OPAActionBundle bundle) This accepts an OPAActionBundle and registers all the OPAActions it contains.
void	start() Starts the OPAXXXManager service.
void	stop() Stops the OPAXXXManager service.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

OPADefaultActionManager

public OPADefaultActionManager()

Creates a new instance of OPADefaultActionManager

Method Detail

doAction

public void doAction(OPAAction action)

Performs a context-sensitive action based on the focussed GUI component. This action would have been enabled by OPAActionManager based on a change in GUI focus. If it is activated, by a using pressing a button for example, OPAADefaultActionManager gets an OPACommand from the focuessed GUI component and executes that OPACommand. The OPACommand contain the actual Java code that produces the desired result.

Specified by:

doAction in interface OPAActionManager

Parameters:

action - The OPAAction used as the key to choose which OPACookies OPACommand to execute.

registerAction

public void registerAction(OPAAction action)

Used by OPA modules to register an OPAAction with OPA. THIS METHOD SHOULD NOT BE USED. Instead registerBundle should be used instead.

Specified by:

registerAction in interface OPAActionManager

Parameters:

action - The OPAAction to add.

start

public void start()

Description copied from interface: OPAManager

Starts the OPAXXXManager service. This should be used to restore any state (if necessary).

Specified by:

start in interface OPAManager

stop

public void stop()

Description copied from interface: OPAManager

Stops the OPAXXXManager service. This should be used to save any state (if necessary).

Specified by:

stop in interface OPAManager

registerBundle

public void registerBundle(OPAActionBundle bundle)

Description copied from interface: OPAActionManager

This accepts an OPAActionBundle and registers all the OPAActions it contains.

Specified by:

registerBundle in interface OPAActionManager

propertyChange

public void propertyChange(java.beans.PropertyChangeEvent evt)

Listens for changes in GUI focus. When a change evt is received, the newly focussed GUI component is queried. If it is an OPACookieJar, it is asked for its OPACookies. These OPACookies determine which OPAActions should be enabled or disabled. OPADefaultActionManager then updates all context-sensitive OPAActions. This SHOULD NOT BE USED BY OPA MODULES.

Specified by:

propertyChange in interface java.beans.PropertyChangeListener

Parameters:

evt - A PropertyChangeEvent from the JVM KeyboardFocuManager

load

public void load()

Description copied from interface: OPAManager

Loads the OPAManager. This should be used to set-up and install any OPA services needed. For example, OPAOption panels needed by this OPAManager should be added to OPA here. This method is called before start().

Specified by:

load in interface OPAManager