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Eclipse GEF
3.3

org.eclipse.gef.editpolicies
Class ConnectionEndpointEditPolicy

java.lang.Object
  extended by

org.eclipse.gef.editpolicies.AbstractEditPolicy
      extended by

org.eclipse.gef.editpolicies.GraphicalEditPolicy
          extended by

org.eclipse.gef.editpolicies.SelectionEditPolicy
              extended by

org.eclipse.gef.editpolicies.SelectionHandlesEditPolicy
                  extended by
org.eclipse.gef.editpolicies.ConnectionEndpointEditPolicy
All Implemented Interfaces:
EditPolicy, RequestConstants

public class ConnectionEndpointEditPolicy
extends SelectionHandlesEditPolicy

A selection handle policy for placing handles at the two ends of a ConnectionEditPart. All ConnectionEditParts should have one of these, even if the ends of the connection aren't draggable, because this is the primary SelectionEditPolicy for showing focus.

A connection can receive focus but not selection by pressing Control+/ on the keyboard.

Since:
2.0

Field Summary
 
Fields inherited from class org.eclipse.gef.editpolicies. SelectionHandlesEditPolicy
handles
 
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
ConnectionEndpointEditPolicy ()
           
 
Method Summary
protected  java.util.List createSelectionHandles ()
          Subclasses must implement to provide the list of handles.
protected  void eraseConnectionMoveFeedback ( ReconnectRequest request)
          Erases connection move feedback.
 void eraseSourceFeedback ( Request request)
          Does nothing by default.
  Command getCommand ( Request request)
          Returns null by default.
protected   Connection getConnection ()
          Convenience method for obtaining the host's Connection figure.
protected   FeedbackHelper getFeedbackHelper ( ReconnectRequest request)
          Lazily creates and returns the feedback helper for the given request.
protected  void hideFocus ()
          Hides the focus indicator.
protected  void showConnectionMoveFeedback ( ReconnectRequest request)
          Shows or updates connection move feedback.
protected  void showFocus ()
          Shows focus around the connection.
 void showSourceFeedback ( Request request)
          Does nothing by default.
 
Methods inherited from class org.eclipse.gef.editpolicies. SelectionHandlesEditPolicy
addSelectionHandles, getAdapter, hideSelection, removeSelectionHandles, showSelection
 
Methods inherited from class org.eclipse.gef.editpolicies. SelectionEditPolicy
activate, addSelectionListener, deactivate, getTargetEditPart, removeSelectionListener, setFocus, setSelectedState, showPrimarySelection
 
Methods inherited from class org.eclipse.gef.editpolicies. GraphicalEditPolicy
addFeedback, getFeedbackLayer, getHostFigure, getLayer, removeFeedback
 
Methods inherited from class org.eclipse.gef.editpolicies. AbstractEditPolicy
debugFeedback, eraseTargetFeedback, getHost, setHost, showTargetFeedback, toString, understandsRequest
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait
 

Constructor Detail

ConnectionEndpointEditPolicy

public ConnectionEndpointEditPolicy()
Method Detail

createSelectionHandles

protected java.util.List createSelectionHandles()
Description copied from class: SelectionHandlesEditPolicy
Subclasses must implement to provide the list of handles.

Specified by:
createSelectionHandles in class SelectionHandlesEditPolicy
Returns:
List of handles; cannot be null
See Also:
SelectionHandlesEditPolicy.createSelectionHandles()

eraseConnectionMoveFeedback

protected void eraseConnectionMoveFeedback(
ReconnectRequest request)
Erases connection move feedback. This method is called when a ReconnectRequest is received.

Parameters:
request - the reconnect request.

eraseSourceFeedback

public void eraseSourceFeedback(
Request request)
Description copied from class: AbstractEditPolicy
Does nothing by default.

Specified by:
eraseSourceFeedback in interface EditPolicy
Overrides:
eraseSourceFeedback in class AbstractEditPolicy
See Also:
EditPolicy.eraseSourceFeedback(org.eclipse.gef.Request)

getCommand

public 
Command getCommand(
Request request)
Description copied from class: AbstractEditPolicy
Returns null by default. null is used to indicate that the EditPolicy does not contribute to the specified Request.

Specified by:
getCommand in interface EditPolicy
Overrides:
getCommand in class AbstractEditPolicy
See Also:
EditPolicy.getCommand(org.eclipse.gef.Request)

getConnection

protected 
Connection getConnection()
Convenience method for obtaining the host's Connection figure.

Returns:
the Connection figure

getFeedbackHelper

protected 
FeedbackHelper getFeedbackHelper(
ReconnectRequest request)
Lazily creates and returns the feedback helper for the given request. The helper will be configured as either moving the source or target end of the connection.

Parameters:
request - the reconnect request
Returns:
the feedback helper

hideFocus

protected void hideFocus()
Hides the focus indicator. The focus indicator is a dotted outline around the connection.

Overrides:
hideFocus in class SelectionEditPolicy
See Also:
showFocus(), SelectionEditPolicy.hideFocus()

showConnectionMoveFeedback

protected void showConnectionMoveFeedback(
ReconnectRequest request)
Shows or updates connection move feedback. Called whenever a show feedback request is received for reconnection.

Parameters:
request - the reconnect request

showFocus

protected void showFocus()
Shows focus around the connection.

Overrides:
showFocus in class SelectionEditPolicy
See Also:
SelectionEditPolicy.showFocus()

showSourceFeedback

public void showSourceFeedback(
Request request)
Description copied from class: AbstractEditPolicy
Does nothing by default.

Specified by:
showSourceFeedback in interface EditPolicy
Overrides:
showSourceFeedback in class AbstractEditPolicy
See Also:
EditPolicy.showSourceFeedback(org.eclipse.gef.Request)

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