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Eclipse GEF
3.3

org.eclipse.gef.editparts
Class AbstractConnectionEditPart

java.lang.Object
  extended by

org.eclipse.gef.editparts.AbstractEditPart
      extended by

org.eclipse.gef.editparts.AbstractGraphicalEditPart
          extended by
org.eclipse.gef.editparts.AbstractConnectionEditPart
All Implemented Interfaces:
ConnectionEditPart, EditPart, GraphicalEditPart, LayerConstants, RequestConstants

public abstract class AbstractConnectionEditPart
extends AbstractGraphicalEditPart
implements ConnectionEditPart, LayerConstants

The base implementation for ConnectionEditPart.


Nested Class Summary
protected  class AbstractConnectionEditPart.DefaultAccessibleAnchorProvider
          Provides accessibility support for when connections are also themselves nodes.
 
Nested classes inherited from class org.eclipse.gef.editparts. AbstractGraphicalEditPart
AbstractGraphicalEditPart.AccessibleGraphicalEditPart
 
Nested classes inherited from class org.eclipse.gef.editparts. AbstractEditPart
AbstractEditPart.EditPolicyIterator
 
Field Summary
 
Fields inherited from class org.eclipse.gef.editparts. AbstractGraphicalEditPart
figure, sourceConnections, targetConnections
 
Fields inherited from class org.eclipse.gef.editparts. AbstractEditPart
children, FLAG_ACTIVE, FLAG_FOCUS, MAX_FLAG
 
Fields inherited from interface org.eclipse.gef. EditPart
SELECTED, SELECTED_NONE, SELECTED_PRIMARY
 
Fields inherited from interface org.eclipse.gef. LayerConstants
CONNECTION_LAYER, FEEDBACK_LAYER, GRID_LAYER, GUIDE_LAYER, HANDLE_LAYER, PRIMARY_LAYER, PRINTABLE_LAYERS, SCALABLE_LAYERS, SCALED_FEEDBACK_LAYER
 
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
AbstractConnectionEditPart ()
           
 
Method Summary
protected  void activateFigure ()
          Activates the Figure representing this, by setting up the start and end connections, and adding the figure to the Connection Layer.
 void addNotify ()
          Called after the EditPart has been added to its parent.
protected   IFigure createFigure ()
          Returns a newly created Figure to represent these type of EditParts.
protected  void deactivateFigure ()
          Deactivates the Figure representing this, by removing it from the connection layer, and resetting the source and target connections to null.
 java.lang.Object getAdapter (java.lang.Class adapter)
          AbstractConnectionEditPart extends getAdapter() to overrides the AbstractConnectionEditPart.DefaultAccessibleAnchorProvider adapter returned by the superclass.
  Connection getConnectionFigure ()
          Convenience method for casting this GraphicalEditPart's Figure to a Connection
  DragTracker getDragTracker ( Request req)
          Returns a DragTracker for dragging this EditPart.
  EditPart getSource ()
           
protected   ConnectionAnchor getSourceConnectionAnchor ()
          Returns the ConnectionAnchor for the source end of the connection.
  EditPart getTarget ()
           
protected   ConnectionAnchor getTargetConnectionAnchor ()
          Returns the ConnectionAnchor for the target end of the connection.
 void refresh ()
          Extended here to also refresh the ConnectionAnchors.
protected  void refreshSourceAnchor ()
          Updates the source ConnectionAnchor.
protected  void refreshTargetAnchor ()
          Updates the target ConnectionAnchor.
 void removeNotify ()
          Extended here to remove the ConnectionEditPart's connection figure from the connection layer.
 void setParent ( EditPart parent)
          Extended to implement automatic addNotify and removeNotify handling.
 void setSource ( EditPart editPart)
          Sets the source EditPart of this connection.
 void setTarget ( EditPart editPart)
          Sets the target EditPart of this connection.
 
Methods inherited from class org.eclipse.gef.editparts. AbstractGraphicalEditPart
activate, addChildVisual, addNodeListener, addSourceConnection, addTargetConnection, createConnection, createOrFindConnection, deactivate, fireRemovingSourceConnection, fireRemovingTargetConnection, fireSourceConnectionAdded, fireTargetConnectionAdded, getContentPane, getFigure, getLayer, getModelSourceConnections, getModelTargetConnections, getSourceConnections, getTargetConnections, primAddSourceConnection, primAddTargetConnection, primRemoveSourceConnection, primRemoveTargetConnection, refreshSourceConnections, refreshTargetConnections, registerVisuals, removeChildVisual, removeNodeListener, removeSourceConnection, removeTargetConnection, reorderChild, reorderSourceConnection, reorderTargetConnection, setFigure, setLayoutConstraint, unregisterVisuals
 
Methods inherited from class org.eclipse.gef.editparts. AbstractEditPart
activateEditPolicies, addChild, addEditPartListener, createChild, createEditPolicies, deactivateEditPolicies, debug, debugFeedback, eraseSourceFeedback, eraseTargetFeedback, fireActivated, fireChildAdded, fireDeactivated, fireRemovingChild, fireSelectionChanged, getAccessibleEditPart, getChildren, getCommand, getEditPolicy, getEditPolicyIterator, getEventListeners, getFlag, getModel, getModelChildren, getParent, getRoot, getSelected, getTargetEditPart, getViewer, hasFocus, installEditPolicy, isActive, isSelectable, performRequest, refreshChildren, refreshVisuals, register, registerAccessibility, registerModel, removeChild, removeEditPartListener, removeEditPolicy, setFlag, setFocus, setModel, setSelected, showSourceFeedback, showTargetFeedback, toString, understandsRequest, unregister, unregisterAccessibility, unregisterModel
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait
 
Methods inherited from interface org.eclipse.gef. GraphicalEditPart
addNodeListener, getContentPane, getFigure, getSourceConnections, getTargetConnections, removeNodeListener, setLayoutConstraint
 
Methods inherited from interface org.eclipse.gef. EditPart
activate, addEditPartListener, deactivate, eraseSourceFeedback, eraseTargetFeedback, getChildren, getCommand, getEditPolicy, getModel, getParent, getRoot, getSelected, getTargetEditPart, getViewer, hasFocus, installEditPolicy, isActive, isSelectable, performRequest, removeEditPartListener, removeEditPolicy, setFocus, setModel, setSelected, showSourceFeedback, showTargetFeedback, understandsRequest
 

Constructor Detail

AbstractConnectionEditPart

public AbstractConnectionEditPart()
Method Detail

activateFigure

protected void activateFigure()
Activates the Figure representing this, by setting up the start and end connections, and adding the figure to the Connection Layer.

See Also:
AbstractGraphicalEditPart.deactivate()

addNotify

public void addNotify()
Description copied from interface: EditPart
Called after the EditPart has been added to its parent. This is used to indicate to the EditPart that it should refresh itself for the first time.

Specified by:
addNotify in interface EditPart
Overrides:
addNotify in class AbstractGraphicalEditPart
See Also:
EditPart.addNotify()

createFigure

protected 
IFigure createFigure()
Returns a newly created Figure to represent these type of EditParts.

Specified by:
createFigure in class AbstractGraphicalEditPart
Returns:
The created Figure.

deactivateFigure

protected void deactivateFigure()
Deactivates the Figure representing this, by removing it from the connection layer, and resetting the source and target connections to null.


getAdapter

public java.lang.Object getAdapter(java.lang.Class adapter)
AbstractConnectionEditPart extends getAdapter() to overrides the AbstractConnectionEditPart.DefaultAccessibleAnchorProvider adapter returned by the superclass. When treating a connection as a node for other connections, it makes sense to target its midpoint, and not the edge of its bounds.

Overrides:
getAdapter in class AbstractGraphicalEditPart
Parameters:
adapter - the adapter Class
Returns:
the adapter
See Also:
AbstractConnectionEditPart.DefaultAccessibleAnchorProvider, AbstractGraphicalEditPart.getAdapter(Class)

getConnectionFigure

public 
Connection getConnectionFigure()
Convenience method for casting this GraphicalEditPart's Figure to a Connection

Returns:
the Figure as a Connection

getDragTracker

public 
DragTracker getDragTracker(
Request req)
Description copied from interface: EditPart
Returns a DragTracker for dragging this EditPart. The SelectionTool is the only Tool by default that calls this method. The SelectionTool will use a SelectionRequest to provide information such as which mouse button is down, and what modifier keys are pressed.

Specified by:
getDragTracker in interface EditPart
Overrides:
getDragTracker in class AbstractGraphicalEditPart
See Also:
EditPart.getDragTracker(Request)

getSource

public 
EditPart getSource()
Specified by:
getSource in interface ConnectionEditPart
Returns:
the EditPart at the source end of this connection.
See Also:
ConnectionEditPart.getSource()

getTarget

public 
EditPart getTarget()
Specified by:
getTarget in interface ConnectionEditPart
Returns:
the EditPart at the target end of this connection.
See Also:
ConnectionEditPart.getTarget()

getSourceConnectionAnchor

protected 
ConnectionAnchor getSourceConnectionAnchor()
Returns the ConnectionAnchor for the source end of the connection. If the source is an instance of NodeEditPart, that interface will be used to determine the proper ConnectionAnchor. If the source is not an instance of NodeEditPart, this method should be overridden to return the correct ConnectionAnchor. Failure to do this will cause a default anchor to be used so that the connection figure will be made visible to the developer.

Returns:
ConnectionAnchor for the source end of the Connection

getTargetConnectionAnchor

protected 
ConnectionAnchor getTargetConnectionAnchor()
Returns the ConnectionAnchor for the target end of the connection. If the target is an instance of NodeEditPart, that interface will be used to determine the proper ConnectionAnchor. If the target is not an instance of NodeEditPart, this method should be overridden to return the correct ConnectionAnchor. Failure to do this will cause a default anchor to be used so that the connection figure will be made visible to the developer.

Returns:
ConnectionAnchor for the target end of the Connection

refresh

public void refresh()
Extended here to also refresh the ConnectionAnchors.

Specified by:
refresh in interface EditPart
Overrides:
refresh in class AbstractGraphicalEditPart
See Also:
EditPart.refresh()

refreshSourceAnchor

protected void refreshSourceAnchor()
Updates the source ConnectionAnchor. Subclasses should override getSourceConnectionAnchor() if necessary, and not this method.


refreshTargetAnchor

protected void refreshTargetAnchor()
Updates the target ConnectionAnchor. Subclasses should override getTargetConnectionAnchor() if necessary, and not this method.


removeNotify

public void removeNotify()
Extended here to remove the ConnectionEditPart's connection figure from the connection layer.

Specified by:
removeNotify in interface EditPart
Overrides:
removeNotify in class AbstractGraphicalEditPart
See Also:
EditPart.removeNotify()

setParent

public void setParent(
EditPart parent)
Extended to implement automatic addNotify and removeNotify handling.

Specified by:
setParent in interface EditPart
Overrides:
setParent in class AbstractEditPart
See Also:
EditPart.setParent(EditPart)

setSource

public void setSource(
EditPart editPart)
Sets the source EditPart of this connection.

Specified by:
setSource in interface ConnectionEditPart
Parameters:
editPart - EditPart which is the source.

setTarget

public void setTarget(
EditPart editPart)
Sets the target EditPart of this connection.

Specified by:
setTarget in interface ConnectionEditPart
Parameters:
editPart - EditPart which is the target.

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