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

java.lang.Object
  org.eclipse.gef.editpolicies.AbstractEditPolicy
      org.eclipse.gef.editpolicies.GraphicalEditPolicy
          org.eclipse.gef.editpolicies.GraphicalNodeEditPolicy
              org.eclipse.gmf.runtime.diagram.ui.editpolicies.GraphicalNodeEditPolicy
                  org.eclipse.gmf.runtime.diagram.ui.editpolicies.TreeGraphicalNodeEditPolicy

All Implemented Interfaces:

EditPolicy, RequestConstants

public class TreeGraphicalNodeEditPolicy

extends GraphicalNodeEditPolicy

This class overrides the default GraphicalNodeEditPolicy to allow for a redirection of the target editpart when connecting. Specifically it used for connections of the same semantic type and will route them using the tree routing. The common example is with generalizations. It is typical for an inheritance hierarchy to be viewed as a tree.

Nested Class Summary

Nested classes inherited from class org.eclipse.gmf.runtime.diagram.ui.editpolicies.GraphicalNodeEditPolicy

GraphicalNodeEditPolicy.PromptAndCreateConnectionCommand

Field Summary

Fields inherited from class org.eclipse.gef.editpolicies.GraphicalNodeEditPolicy

connectionFeedback, feedbackHelper

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

TreeGraphicalNodeEditPolicy()

Method Summary

protected Command	getConnectionCompleteCommand(CreateConnectionRequest request) Returns a command that will create the connection.
protected INodeEditPart	getConnectionCompleteEditPart(Request request) getConnectionCompleteEditPart This method is used when the connection is verified and made complete to retrieve the final connecting editpart to be used in the connection creation.
protected ConnectionAnchor	getConnectionTargetAnchor(Request request) getConnectionTargetAnchor Method used during reconnection to retrieve the appropriate target anchor based on a request.

Methods inherited from class org.eclipse.gmf.runtime.diagram.ui.editpolicies.GraphicalNodeEditPolicy

createDummyConnection, getCommand, getConnectableEditPart, getConnectionAndRelationshipCompleteCommand, getConnectionAndRelationshipCreateCommand, getConnectionCompleteCommand, getConnectionCreateCommand, getConnectionMenuContent, getDummyConnectionRouter, getPromptAndCreateConnectionCommand, getReconnectSourceCommand, getReconnectTargetCommand, getReversedUnspecifiedConnectionCompleteCommand, getRoutingAdjustment, getSemanticHint, getSourceConnectionAnchor, getTargetConnectionAnchor, getUnspecifiedConnectionCompleteCommand, getView, getViewAdapter, setViewAdapter

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

deactivate, eraseCreationFeedback, eraseSourceFeedback, eraseTargetConnectionFeedback, eraseTargetFeedback, getFeedbackHelper, getTargetEditPart, showCreationFeedback, showSourceFeedback, showTargetConnectionFeedback, showTargetFeedback

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

addFeedback, getFeedbackLayer, getHostFigure, getLayer, removeFeedback

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

activate, debugFeedback, getHost, setHost, toString, understandsRequest

Methods inherited from class java.lang.Object

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

Constructor Detail

TreeGraphicalNodeEditPolicy

public TreeGraphicalNodeEditPolicy()

Method Detail

getConnectionCompleteEditPart

protected INodeEditPart getConnectionCompleteEditPart(Request request)

Description copied from class: GraphicalNodeEditPolicy

getConnectionCompleteEditPart This method is used when the connection is verified and made complete to retrieve the final connecting editpart to be used in the connection creation. This is by default the "host" edit part which is what is connected to by the user feedback. Subclassing edit-policies may wish to redirect the connection to a different edit-part depending on the gesture. i.e. the tree-view for generalizations will redirect the connection to the target of the host.

Overrides:

getConnectionCompleteEditPart in class GraphicalNodeEditPolicy

Parameters:

request - Request giving some information about the user gesture.

Returns:

INodeEditPart which will be the target connection.

getConnectionTargetAnchor

protected ConnectionAnchor getConnectionTargetAnchor(Request request)

Description copied from class: GraphicalNodeEditPolicy

getConnectionTargetAnchor Method used during reconnection to retrieve the appropriate target anchor based on a request.

Overrides:

getConnectionTargetAnchor in class GraphicalNodeEditPolicy

Parameters:

request - Request giving some information about the user gesture.

Returns:

ConnectionAnchor the connections target end will connect to.

getConnectionCompleteCommand

protected Command getConnectionCompleteCommand(CreateConnectionRequest request)

Description copied from class: GraphicalNodeEditPolicy

Returns a command that will create the connection. If you must override this method, you should call super.

Overrides:

getConnectionCompleteCommand in class GraphicalNodeEditPolicy

See Also:

GraphicalNodeEditPolicy.getConnectionCompleteCommand(org.eclipse.gef.requests.CreateConnectionRequest)