UMLChangeDispatch (ArgoUML Javadoc for internal use)

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org.argouml.uml.ui
Class UMLChangeDispatch

java.lang.Object
  org.argouml.uml.ui.UMLChangeDispatch

All Implemented Interfaces:: Runnable, UMLUserInterfaceComponent

public class UMLChangeDispatch
extends Object
implements Runnable, UMLUserInterfaceComponent

This class is used to dispatch a UML model change event (which may occur on a non-UI) thread) to user interface components. The class is created in response to a UML Model change event being captured by a UMLUserInterfaceContainer and then is passed as an argument to InvokeLater to be run on the user interface thread.

This class is updated to cope with changes to the targetchanged mechanism.

Field Summary
`private Container`	`container`
`private int`	`eventType`
`private Object`	`target` The target of the proppanel that constructs this umlchangedispatch.
`static int`	`TARGET_CHANGED` Dispatch a target changed event.
`static int`	`TARGET_CHANGED_ADD` Dispatch a target changed event
`static int`	`TARGET_REASSERTED` Dispatch a target reasserted event.

Constructor Summary
`UMLChangeDispatch(Container uic, int et)` Creates a UMLChangeDispatch.

Method Summary
`private void`	`dispatch(Container theAWTContainer)` Iterates through all children of this container.
`void`	`run()` Called by InvokeLater on user interface thread.
`private void`	`synchronizedDispatch(Container cont)`
`void`	`targetChanged()` Configures this instance to dispatch a targetChanged event.
`void`	`targetReasserted()` This method is called when the navigation history has been changed (and navigation buttons may need to be updated).

Methods inherited from class java.lang.Object

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

Field Detail

eventType

private int eventType

container

private Container container

target

private Object target

The target of the proppanel that constructs this umlchangedispatch.

TARGET_CHANGED_ADD

public static final int TARGET_CHANGED_ADD

Dispatch a target changed event

See Also:: Constant Field Values

TARGET_CHANGED

public static final int TARGET_CHANGED

Dispatch a target changed event.

See Also:: Constant Field Values

TARGET_REASSERTED

public static final int TARGET_REASSERTED

Dispatch a target reasserted event.

See Also:: Constant Field Values

Constructor Detail

UMLChangeDispatch

public UMLChangeDispatch(Container uic,
                         int et)

Creates a UMLChangeDispatch. eventType is overriden if a call to one of the event functions is called.
Parameters:: uic - user interface container to which changes are dispatched.; et - -1 will add event listener to new target, 0 for default.

Method Detail

targetChanged

public void targetChanged()

Configures this instance to dispatch a targetChanged event.

Specified by:: targetChanged in interface UMLUserInterfaceComponent

targetReasserted

public void targetReasserted()

Description copied from interface: UMLUserInterfaceComponent

This method is called when the navigation history has been changed (and navigation buttons may need to be updated). targetChanged implies navigationHistoryChanged, so this method will not be called after a targetChange.

Specified by:: targetReasserted in interface UMLUserInterfaceComponent

See Also:: UMLUserInterfaceComponent.targetReasserted()

run

public void run()

Called by InvokeLater on user interface thread. Dispatches event to all contained objects implementing UMLUserInterfaceComponent. If event == -1, adds change listener to new target on completion of dispatch.

Specified by:: run in interface Runnable

dispatch

private void dispatch(Container theAWTContainer)

Iterates through all children of this container. If a child is another container then calls dispatch iteratively, if a child supports UMLUserInterfaceComponent then calls the appropriate method.

Parameters:: theAWTContainer - AWT container

synchronizedDispatch

private void synchronizedDispatch(Container cont)