org.eclipse.graphiti.pattern
Class LayoutFeatureForPattern

java.lang.Object
  extended by org.eclipse.graphiti.features.impl.AbstractFeature
      extended by org.eclipse.graphiti.features.impl.AbstractLayoutFeature
          extended by org.eclipse.graphiti.pattern.LayoutFeatureForPattern
All Implemented Interfaces:
ICustomUndoableFeature, IFeature, IFeatureProviderHolder, ILayoutFeature, ILayout, IDescription, IName

public class LayoutFeatureForPattern
extends AbstractLayoutFeature
implements ICustomUndoableFeature

The Class LayoutFeatureForPattern.


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


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