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Eclipse GEF
3.3

org.eclipse.gef.editpolicies
Class GraphicalEditPolicy

java.lang.Object
  extended by

org.eclipse.gef.editpolicies.AbstractEditPolicy
      extended by
org.eclipse.gef.editpolicies.GraphicalEditPolicy
All Implemented Interfaces:
EditPolicy, RequestConstants
Direct Known Subclasses:
DirectEditPolicy, GraphicalNodeEditPolicy, LayoutEditPolicy, SelectionEditPolicy, SnapFeedbackPolicy

public abstract class GraphicalEditPolicy
extends AbstractEditPolicy

A GraphicalEditPolicy is used with a GraphicalEditPart. All GraphicalEditPolicies are involved with the Figure in some way. They might use the Figure to interpret Requests, or they might simply decorate the Figure with graphical Feedback, such as selection handles.

This class provides convenience methods for accessing the host's Figure, and for adding feedback to the GraphicalViewer. This class does not handle any Request types directly.


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
GraphicalEditPolicy ()
           
 
Method Summary
protected  void addFeedback ( IFigure figure)
          Adds the specified Figure to the LayerConstants.FEEDBACK_LAYER.
protected   IFigure getFeedbackLayer ()
          Returns the layer used for displaying feedback.
protected   IFigure getHostFigure ()
          Convenience method to return the host's Figure.
protected   IFigure getLayer (java.lang.Object layer)
          Obtains the specified layer.
protected  void removeFeedback ( IFigure figure)
          Removes the specified Figure from the LayerConstants.FEEDBACK_LAYER.
 
Methods inherited from class org.eclipse.gef.editpolicies. AbstractEditPolicy
activate, deactivate, debugFeedback, eraseSourceFeedback, eraseTargetFeedback, getCommand, 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

GraphicalEditPolicy

public GraphicalEditPolicy()
Method Detail

addFeedback

protected void addFeedback(
IFigure figure)
Adds the specified Figure to the LayerConstants.FEEDBACK_LAYER.

Parameters:
figure - the feedback to add

getFeedbackLayer

protected 
IFigure getFeedbackLayer()
Returns the layer used for displaying feedback.

Returns:
the feedback layer

getHostFigure

protected 
IFigure getHostFigure()
Convenience method to return the host's Figure.

Returns:
The host GraphicalEditPart's Figure

getLayer

protected 
IFigure getLayer(java.lang.Object layer)
Obtains the specified layer.

Parameters:
layer - the key identifying the layer
Returns:
the requested layer

removeFeedback

protected void removeFeedback(
IFigure figure)
Removes the specified Figure from the LayerConstants.FEEDBACK_LAYER.

Parameters:
figure - the feedback to remove

Eclipse GEF
3.3

Copyright (c) IBM Corp. and others 2000, 2007. All Rights Reserved.

 
 
  Published under the terms of the Eclipse Public License Version 1.0 ("EPL") Design by Interspire