Eclipse GEF and Draw2d Plug-in Developer Guide (Galileo) - RootComponentEditPolicy (Eclipse GEF API Specification)

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Eclipse GEF
3.3

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org.eclipse.gef.editpolicies
Class RootComponentEditPolicy

java.lang.Object
  

org.eclipse.gef.editpolicies.AbstractEditPolicy
      

org.eclipse.gef.editpolicies.ComponentEditPolicy
          
org.eclipse.gef.editpolicies.RootComponentEditPolicy

All Implemented Interfaces:: EditPolicy, RequestConstants

public class RootComponentEditPolicy
extends ComponentEditPolicy

The root component cannot be removed from its parent. This EditPolicy is typically installed on the Viewer's contents.

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

RootComponentEditPolicy ()

Method Summary

protected Command createDeleteCommand ( GroupRequest request)
Overridden to prevent the host from being deleted.

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

getCommand, getDeleteCommand, getOrphanCommand

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

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

Methods inherited from class java.lang.Object

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

Constructor Detail

RootComponentEditPolicy

public RootComponentEditPolicy()

Method Detail

createDeleteCommand

protected 
Command createDeleteCommand(
GroupRequest request)

Overridden to prevent the host from being deleted.

Overrides:: createDeleteCommand in class ComponentEditPolicy

Parameters:: request - the DeleteRequest
Returns:: Command null or a contribution to the delete
See Also:: ComponentEditPolicy.createDeleteCommand(GroupRequest)