org.eclipse.graphiti.features.impl
Class DefaultReconnectionFeature

java.lang.Object
  org.eclipse.graphiti.features.impl.AbstractFeature
      org.eclipse.graphiti.features.impl.DefaultReconnectionFeature

All Implemented Interfaces:

IFeature, IFeatureProviderHolder, IReconnectionFeature, IReconnection, IDescription, IName

public class DefaultReconnectionFeature
extends AbstractFeature
implements IReconnectionFeature

The default implementation for the IReconnectionFeature interface. Is used by default by the framework for any reconnection requests triggered in the diagram. May be subclassed and adapted by clients.

Field Summary

private static String

NAME

Constructor Summary

DefaultReconnectionFeature(IFeatureProvider fp)
Creates a new DefaultReconnectionFeature.

Method Summary

void	canceledReconnect(IReconnectionContext context) Called by the framework in case a started reconnection operation has been cancelled, e.g.
boolean	canExecute(IContext context) Called by the framework to check if this feature can perform the currently triggered reconnection request.
boolean	canReconnect(IReconnectionContext context) Called by the framework to check if this feature can perform the currently triggered reconnection request.
boolean	canStartReconnect(IReconnectionContext context) Called by the framework after the connection has been selected.
void	execute(IContext context) Called by the framework to execute this feature to perform the currently triggered reconnection request.
String	getName() Returns the display name of the feature to use e.g.
protected Anchor	getNewAnchor(IReconnectionContext context) Can be overridden by the user to influence the target anchor to use for the reconnect.
void	postReconnect(IReconnectionContext context) Hook that is called by the reconnect(IReconnectionContext) method after the actual reconnect is done.
void	preReconnect(IReconnectionContext context) Hook that is called by the reconnect(IReconnectionContext) method before the actual reconnect is done.
void	reconnect(IReconnectionContext context) Called by the framework to perform the currently triggered reconnection request.

Methods inherited from class org.eclipse.graphiti.features.impl.AbstractFeature

addGraphicalRepresentation, canUndo, getAllBusinessObjectsForPictogramElement, getBusinessObjectForPictogramElement, getDescription, getDiagram, getDiagramBehavior, getFeatureProvider, getProgressCallback, getUserDecision, hasDoneChanges, isAvailable, layoutPictogramElement, link, link, manageColor, manageColor, manageDefaultFont, manageDefaultFont, manageFont, manageFont, setProgressCallback, toString, updatePictogramElement

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.eclipse.graphiti.features.IFeature

canUndo, hasDoneChanges, isAvailable

Methods inherited from interface org.eclipse.graphiti.IDescription

getDescription

Methods inherited from interface org.eclipse.graphiti.features.IFeatureProviderHolder

getFeatureProvider

Field Detail

NAME

private static final String NAME

Constructor Detail

DefaultReconnectionFeature

public DefaultReconnectionFeature(IFeatureProvider fp)

Creates a new DefaultReconnectionFeature.

Parameters:

fp - the feature provider to use

Method Detail

canReconnect

public boolean canReconnect(IReconnectionContext context)

Called by the framework to check if this feature can perform the currently triggered reconnection request. The default implementation checks if

• A connection and a new target anchor are passed in the given IReconnectionContext
• The connection passed in the context has a start and end anchor
• The new anchor is not located directly in the diagram

Can be overridden by clients to add additional checks.

Specified by:

canReconnect in interface IReconnection

Parameters:

context - the context object holding all the reconnection information

Returns:

true if the feature is able to deal with the reconnection request, false otherwise or if the tool needs to prohibit the reconnection for the given situation.

getNewAnchor

protected Anchor getNewAnchor(IReconnectionContext context)

Can be overridden by the user to influence the target anchor to use for the reconnect.

Parameters:

context - the context holding the reconnection information

Returns:

the new anchor to use as target for the reconnect

reconnect

public final void reconnect(IReconnectionContext context)

Called by the framework to perform the currently triggered reconnection request. The default implementation calls the preReconnect(IReconnectionContext) and postReconnect(IReconnectionContext) hooks. The reconnect is done by either replacing the start anchor (in case it matches the old anchor passed in the context) or the end anchor with the new anchor.

Specified by:

reconnect in interface IReconnection

Parameters:

context - the context object holding all the reconnection information

preReconnect

public void preReconnect(IReconnectionContext context)

Hook that is called by the reconnect(IReconnectionContext) method before the actual reconnect is done. Can be overridden by clients to add additional functionality.

Specified by:

preReconnect in interface IReconnection

Parameters:

context - the context object holding all the reconnection information

postReconnect

public void postReconnect(IReconnectionContext context)

Hook that is called by the reconnect(IReconnectionContext) method after the actual reconnect is done. Can be overridden by clients to add additional functionality.

Specified by:

postReconnect in interface IReconnection

Parameters:

context - the context object holding all the reconnection information

canExecute

public boolean canExecute(IContext context)

Called by the framework to check if this feature can perform the currently triggered reconnection request. Delegates to the canReconnect(IReconnectionContext) method in case the passed context is a IReconnectionContext.

Specified by:

canExecute in interface IFeature

Parameters:

context - the context object holding all the reconnection information

Returns:

true if the feature is able to deal with the reconnection request, false otherwise or if the tool needs to prohibit the reconnection for the given situation.

See Also:

IContext

execute

public void execute(IContext context)

Called by the framework to execute this feature to perform the currently triggered reconnection request. Delegates to the reconnect(IReconnectionContext) method in case the passed context is a IReconnectionContext.

Specified by:

execute in interface IFeature

Parameters:

context - the context object holding all the reconnection information

See Also:

IContext

getName

public String getName()

Returns the display name of the feature to use e.g. within a context menu.

Specified by:

getName in interface IName

Overrides:

getName in class AbstractFeature

Returns:

the display name of the feature

canceledReconnect

public void canceledReconnect(IReconnectionContext context)

Called by the framework in case a started reconnection operation has been cancelled, e.g. by pressing ESC, selecting another tool from the palette etc.

Specified by:

canceledReconnect in interface IReconnection

Parameters:

context - the context object holding all the reconnection information

Since:

0.9

canStartReconnect

public boolean canStartReconnect(IReconnectionContext context)

Called by the framework after the connection has been selected. Determines whether connection endpoint can be dragged to start reconnection.

Specified by:

canStartReconnect in interface IReconnection

Parameters:

context - the context object holding information about the connection and old anchor

Returns:

true

Since:

0.11