org.eclipse.gmf.runtime.diagram.ui.editpolicies
Class CreationEditPolicy

java.lang.Object
  org.eclipse.gef.editpolicies.AbstractEditPolicy
      org.eclipse.gmf.runtime.diagram.ui.editpolicies.CreationEditPolicy

All Implemented Interfaces:

EditPolicy, RequestConstants

public class CreationEditPolicy

extends AbstractEditPolicy

This edit policy returns the command that will create a new notational view for a the given request.

Field Summary

Fields inherited from interface org.eclipse.gef.EditPolicy

COMPONENT_ROLE, CONNECTION_BENDPOINTS_ROLE, CONNECTION_ENDPOINTS_ROLE, CONNECTION_ROLE, CONTAINER_ROLE, DIRECT_EDIT_ROLE, GRAPHICAL_NODE_ROLE, LAYOUT_ROLE, NODE_ROLE, PRIMARY_DRAG_ROLE, SELECTION_FEEDBACK_ROLE, TREE_CONTAINER_ROLE

Fields inherited from interface org.eclipse.gef.RequestConstants

REQ_ADD, REQ_ALIGN, REQ_ALIGN_CHILDREN, REQ_CLONE, REQ_CONNECTION_END, REQ_CONNECTION_START, REQ_CREATE, REQ_CREATE_BENDPOINT, REQ_DELETE, REQ_DELETE_DEPENDANT, REQ_DIRECT_EDIT, REQ_MOVE, REQ_MOVE_BENDPOINT, REQ_MOVE_CHILDREN, REQ_OPEN, REQ_ORPHAN, REQ_ORPHAN_CHILDREN, REQ_RECONNECT_SOURCE, REQ_RECONNECT_TARGET, REQ_RESIZE, REQ_RESIZE_CHILDREN, REQ_SELECTION, REQ_SELECTION_HOVER

Constructor Summary

CreationEditPolicy()

Method Summary

Command	getCommand(Request request)
protected Command	getCreateCommand(CreateViewRequest request) Called in response to a REQ_CREATE request.
protected Command	getCreateElementAndViewCommand(CreateViewAndElementRequest request) Method getCreateElementAndViewCommand.
protected Command	getReparentCommand(ChangeBoundsRequest request) return a command to reparent both the semantic and view elements.
protected ICommand	getReparentCommand(IGraphicalEditPart gep) Return the command to reparent the supplied editpart's semantic and notation elements.
protected ICommand	getReparentViewCommand(IGraphicalEditPart gep) Return the command to reparent the supplied editpart's view only.
EditPart	getTargetEditPart(Request request) Return the host if this editpolicy understands the supplied request.
protected boolean	shouldReparent(EObject element, EObject newContext) Determines if a semantic reparent is being performed.
boolean	understandsRequest(Request request) Understands REQ_CREATE and REQ_ADD request types.

Methods inherited from class org.eclipse.gef.editpolicies.AbstractEditPolicy

activate, deactivate, debugFeedback, eraseSourceFeedback, eraseTargetFeedback, getHost, setHost, showSourceFeedback, showTargetFeedback, toString

Methods inherited from class java.lang.Object

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

Constructor Detail

CreationEditPolicy

public CreationEditPolicy()

Method Detail

getCommand

public Command getCommand(Request request)

Returns:

Command for the REQ_CREATE request. If the request is of type CreateViewAndElementRequest then a command to create the semantic, and the view will

See Also:

EditPolicy.getCommand(org.eclipse.gef.Request)

understandsRequest

public boolean understandsRequest(Request request)

Understands REQ_CREATE and REQ_ADD request types.

shouldReparent

protected boolean shouldReparent(EObject element,
                                 EObject newContext)

Determines if a semantic reparent is being performed.

Parameters:

element - element being reparented

newContext - the new container element

Returns:

true if the supplied elemnet's container is not equals to the supplied newContext.\; otherwise false.

getReparentCommand

protected Command getReparentCommand(ChangeBoundsRequest request)

return a command to reparent both the semantic and view elements.

Parameters:

request - the request

Returns:

command

getReparentCommand

protected ICommand getReparentCommand(IGraphicalEditPart gep)

Return the command to reparent the supplied editpart's semantic and notation elements.

Parameters:

gep - the editpart being reparented

Returns:

A CompositeCommand2 that will reparent both the semantic and notation elements.

getReparentViewCommand

protected ICommand getReparentViewCommand(IGraphicalEditPart gep)

Return the command to reparent the supplied editpart's view only.

Parameters:

gep - the editpart being reparented

Returns:

A command to reparent the notation element.

getCreateCommand

protected Command getCreateCommand(CreateViewRequest request)

Called in response to a REQ_CREATE request. Creates a compound command and populated with the following commands for each element to be created:

1. a CreateCommandfor each of the request's view descriptor.

Parameters:

request - a create request (understands instances of CreateViewRequest).

Returns:

a command to satify the request; null if the request is not understood.

getCreateElementAndViewCommand

protected Command getCreateElementAndViewCommand(CreateViewAndElementRequest request)

Method getCreateElementAndViewCommand.

Parameters:

request -

Returns:

Command Which creates the sematnic and the view command for the given CreateViewAndElementRequest

getTargetEditPart

public EditPart getTargetEditPart(Request request)

Return the host if this editpolicy understands the supplied request.