org.eclipse.graphiti.pattern
Class RemoveFeatureForPattern

java.lang.Object
  org.eclipse.graphiti.features.impl.AbstractFeature
      org.eclipse.graphiti.features.impl.DefaultRemoveFeature
          org.eclipse.graphiti.pattern.RemoveFeatureForPattern

All Implemented Interfaces:

ICustomUndoableFeature, IFeature, IFeatureProviderHolder, IRemoveFeature, IRemove, IDescription, IName

public class RemoveFeatureForPattern
extends DefaultRemoveFeature
implements ICustomUndoableFeature

This class is used by the DefaultFeatureProviderWithPatterns to wrap the removal behavior provided by an IPattern into an IRemoveFeature.

Since:

0.8.0

Field Summary

private IFeatureForPattern

delegate

Constructor Summary

RemoveFeatureForPattern(IFeatureProvider featureProvider, IPattern pattern)
Creates a new RemoveFeatureForPattern.

Method Summary

boolean	canRedo(IContext context) Decides if the processed feature can be re-done.
boolean	canRemove(IRemoveContext context) Checks if given object could be removed.
boolean	canUndo(IContext context) Decides if the current feature can be undone - this is the undo of the execute operation.
void	postRemove(IRemoveContext context) called after remove call.
void	preRemove(IRemoveContext context) called prior to remove call.
void	redo(IContext context) This method will be called to actually do the work needed for redo.
void	undo(IContext context) This method will be called to actually do the work needed for undo.

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

canExecute, execute, getName, remove, removeAllConnections

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

addGraphicalRepresentation, getAllBusinessObjectsForPictogramElement, getBusinessObjectForPictogramElement, getDescription, getDiagram, getDiagramEditor, getFeatureProvider, getProgressCallback, getUserDecision, hasDoneChanges, isAvailable, layoutPictogramElement, link, link, manageColor, manageColor, 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

hasDoneChanges, isAvailable

Methods inherited from interface org.eclipse.graphiti.IDescription

getDescription

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

getFeatureProvider

Field Detail

delegate

private IFeatureForPattern delegate

Constructor Detail

RemoveFeatureForPattern

public RemoveFeatureForPattern(IFeatureProvider featureProvider,
                               IPattern pattern)

Creates a new RemoveFeatureForPattern.

Parameters:

featureProvider - the feature provider

pattern - the pattern

Method Detail

canRemove

public boolean canRemove(IRemoveContext context)

Description copied from interface: IRemove

Checks if given object could be removed.

Specified by:

canRemove in interface IRemove

Overrides:

canRemove in class DefaultRemoveFeature

Parameters:

context - contains object to remove

Returns:

true if remove is possible

preRemove

public void preRemove(IRemoveContext context)

Description copied from interface: IRemove

called prior to remove call.

Specified by:

preRemove in interface IRemove

Overrides:

preRemove in class DefaultRemoveFeature

Parameters:

context - the context

postRemove

public void postRemove(IRemoveContext context)

Description copied from interface: IRemove

called after remove call.

Specified by:

postRemove in interface IRemove

Overrides:

postRemove in class DefaultRemoveFeature

Parameters:

context - the context

canUndo

public boolean canUndo(IContext context)

Description copied from interface: IFeature

Decides if the current feature can be undone - this is the undo of the execute operation.

Specified by:

canUndo in interface ICustomUndoableFeature

Specified by:

canUndo in interface IFeature

Overrides:

canUndo in class AbstractFeature

Parameters:

context - this is the general input for this method

Returns:

true if the feature can be undone, false if not

See Also:

IContext

undo

public void undo(IContext context)

Description copied from interface: ICustomUndoableFeature

This method will be called to actually do the work needed for undo. Customers may revert their non-EMF changes done by the feature here.

Specified by:

undo in interface ICustomUndoableFeature

Parameters:

context - this is the instance of the IContext object that was in use when executing the feature

canRedo

public boolean canRedo(IContext context)

Description copied from interface: ICustomUndoableFeature

Decides if the processed feature can be re-done.

Note that as soon as any feature reports false here, also all consecutive entries in the command stack are no longer reachable for redo.

Specified by:

canRedo in interface ICustomUndoableFeature

Parameters:

context - this is the instance of the IContext object that was in use when executing the feature

Returns:

true if the feature can be re-done, false if not

redo

public void redo(IContext context)

Description copied from interface: ICustomUndoableFeature

This method will be called to actually do the work needed for redo. Customers may re-apply their non-EMF changes done by the feature here. (Usually it might be sufficient to delegate to the execution method of the feature.)

Specified by:

redo in interface ICustomUndoableFeature

Parameters:

context - this is the instance of the IContext object that was in use when executing the feature