org.eclipse.graphiti.pattern
Class LayoutFeatureForPattern

java.lang.Object
  org.eclipse.graphiti.features.impl.AbstractFeature
      org.eclipse.graphiti.features.impl.AbstractLayoutFeature
          org.eclipse.graphiti.pattern.LayoutFeatureForPattern

All Implemented Interfaces:

ICustomUndoableFeature, IFeature, IFeatureProviderHolder, ILayoutFeature, ILayout, IDescription, IName

public class LayoutFeatureForPattern
extends AbstractLayoutFeature
implements ICustomUndoableFeature

This feature wraps the layout functionality of a pattern for calls of the Graphiti framework. Clients should not need to use this class directly.

Field Summary

private IFeatureForPattern

delegate

Constructor Summary

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

Method Summary

boolean	canLayout(ILayoutContext context) Checks whether the current pictogram element of the given context can be layouted.
boolean	canRedo(IContext context) Decides if the processed feature can be re-done.
boolean	canUndo(IContext context) Decides if the current feature can be undone - this is the undo of the execute operation.
boolean	layout(ILayoutContext context) Layoutes the pictogram element.
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.AbstractLayoutFeature

canExecute, canLayoutPictogramElement, execute, getName, resizeShape

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

LayoutFeatureForPattern

public LayoutFeatureForPattern(IFeatureProvider featureProvider,
                               IPattern pattern)

Creates a new LayoutFeatureForPattern.

Parameters:

featureProvider - the feature provider

pattern - the pattern

Method Detail

canLayout

public boolean canLayout(ILayoutContext context)

Description copied from interface: ILayout

Checks whether the current pictogram element of the given context can be layouted.

Specified by:

canLayout in interface ILayout

Parameters:

context - the context

Returns:

true if update is possible

layout

public boolean layout(ILayoutContext context)

Description copied from interface: ILayout

Layoutes the pictogram element.

Specified by:

layout in interface ILayout

Parameters:

context - the context

Returns:

true, if update process was successfull

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

Since:

0.8

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

Since:

0.8

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

Since:

0.8