Package org.eclipse.graphiti.pattern

Class DefaultFeatureProviderWithPatterns

java.lang.Object

org.eclipse.graphiti.features.impl.AbstractFeatureProvider

org.eclipse.graphiti.ui.features.DefaultFeatureProvider

org.eclipse.graphiti.pattern.DefaultFeatureProviderWithPatterns

All Implemented Interfaces:

IFeatureProvider, IMappingProvider, IFeatureProviderWithPatterns, IPatternContainer

public class DefaultFeatureProviderWithPatterns
extends DefaultFeatureProvider
implements IFeatureProviderWithPatterns

The class DefaultFeatureProviderWithPatterns is the base class for a feature provider that uses patterns. It is also possible to implement aspects of the functionality triggered here using features by simply returning these features here. In case of pattern-based functionality clients in general need to implement nothing here, because the registered patterns (see addPattern(IPattern) and addConnectionPattern(IConnectionPattern)) delegate to the pattern automatically.

Field Summary

Fields inherited from class org.eclipse.graphiti.features.impl.AbstractFeatureProvider

EMPTY_PICTOGRAM_ELEMENTS, NO_OBJECTS

Constructor Summary

Constructors

Constructor	Description
DefaultFeatureProviderWithPatterns(IDiagramTypeProvider dtp)	Creates a new instance of DefaultFeatureProviderWithPatterns.

Method Summary

Modifier and Type	Method	Description
void	activateDirectEditingForPatterns(PictogramElement mainPictogramElement, Object domainObject)	Convenience method to activate the direct editing for the given PictogramElement and domain object.
void	activateDirectEditingForPatterns(PictogramElement mainPictogramElement, Object domainObject, String keyProperty)	Convenience method to activate the direct editing for the given PictogramElement and domain object.
void	addConnectionPattern(IConnectionPattern pattern)	Adds a pattern defined to handle connections to the list of registered patterns.
void	addPattern(IPattern pattern)	Adds a pattern defined to handle shapes to the list of registered patterns.
protected boolean	checkFeatureAndContext(IFeature feature, IContext context)	Checks if a feature along with its context is available.
protected boolean	checkPattern(IPattern pattern, Object object)	Checks the given pattern if it can deal with the given domain object.
IAddFeature	getAddFeature(IAddContext context)	Tries to retrieve an add feature suiting the given add context from the registered patterns.
protected IAddFeature	getAddFeatureAdditional(IAddContext context)	Gets the additional add feature functionality.
Object	getBusinessObjectForPictogramElement(PictogramElement pictogramElement)	Helper method to find the domain object for a given PictogramElement.
protected List<IConnectionPattern>	getConnectionPatterns()	Returns a new list of the registered patterns that deal with sonnection inside this feature provider.
ICreateConnectionFeature[]	getCreateConnectionFeatures()	Retrieves an array of create connection features that are available from the registered patterns and the super class of this feature provider.
protected ICreateConnectionFeature[]	getCreateConnectionFeaturesAdditional()	Gets the additional create connection feature functionality.
ICreateFeature[]	getCreateFeatures()	Retrieves an array of create features that are available from the registered patterns and the super class of this feature provider.
protected ICreateFeature[]	getCreateFeaturesAdditional()	Gets the additional create feature functionality.
IDeleteFeature	getDeleteFeature(IDeleteContext context)	Tries to retrieve a delete feature suiting the given delete context from the registered patterns.
protected IDeleteFeature	getDeleteFeatureAdditional(IDeleteContext context)	Gets the additional delete feature functionality.
IDirectEditingFeature	getDirectEditingFeature(IDirectEditingContext context)	Tries to retrieve a direct editing feature suiting the given direct editing context from the registered patterns.
protected IDirectEditingFeature	getDirectEditingFeatureAdditional(IDirectEditingContext context)	Gets the additional direct editing feature functionality.
ILayoutFeature	getLayoutFeature(ILayoutContext context)	Tries to retrieve a layout feature suiting the given layout context from the registered patterns.
protected ILayoutFeature	getLayoutFeatureAdditional(ILayoutContext context)	Gets the additional layout feature functionality.
IMoveShapeFeature	getMoveShapeFeature(IMoveShapeContext context)	Tries to retrieve a move feature for shapes suiting the given move context from the registered patterns.
protected IMoveShapeFeature	getMoveShapeFeatureAdditional(IMoveShapeContext context)	Gets the additional move feature functionality for shapes.
IPattern	getPatternForPictogramElement(PictogramElement pe)	Gets the pattern for pictogram element.
protected List<IPattern>	getPatterns()	Returns a new list of the registered patterns that deal with shapes inside this feature provider.
IRemoveFeature	getRemoveFeature(IRemoveContext context)	Tries to retrieve a remove feature suiting the given remove context from the registered patterns.
protected IRemoveFeature	getRemoveFeatureAdditional(IRemoveContext context)	Gets the additional remove feature functionality.
IResizeShapeFeature	getResizeShapeFeature(IResizeShapeContext context)	Tries to retrieve a resize feature for shapes suiting the given resize context from the registered patterns.
protected IResizeShapeFeature	getResizeShapeFeatureAdditional(IResizeShapeContext context)	Gets the additional resize feature functionality for shapes.
IUpdateFeature	getUpdateFeature(IUpdateContext context)	Tries to retrieve an update feature suiting the given update context from the registered patterns.
protected IUpdateFeature	getUpdateFeatureAdditional(IUpdateContext context)	Gets the additional update feature functionality.
protected void	traceWarning(String string, IPattern pattern, IPattern choosenPattern)	Helper method to trace warnings when more than one pattern is executed.

Methods inherited from class org.eclipse.graphiti.ui.features.DefaultFeatureProvider

getAddBendpointFeature, getCopyFeature, getCustomFeatures, getMoveAnchorFeature, getMoveBendpointFeature, getMoveConnectionDecoratorFeature, getPasteFeature, getPrintFeature, getRemoveBendpointFeature, getSaveImageFeature

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

addIfPossible, canAdd, canLayout, canUpdate, dispose, getAllBusinessObjectsForPictogramElement, getAllPictogramElementsForBusinessObject, getDiagramTypeProvider, getDirectEditingInfo, getDragAndDropFeatures, getIndependenceSolver, getLinkService, getPictogramElementForBusinessObject, getReconnectionFeature, hasPictogramElementForBusinessObject, layoutIfPossible, link, link, setIndependenceSolver, updateIfPossible, updateIfPossibleAndNeeded, updateNeeded

Methods inherited from class java.lang.Object

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

Constructor Details

DefaultFeatureProviderWithPatterns

public DefaultFeatureProviderWithPatterns(IDiagramTypeProvider dtp)

Creates a new instance of DefaultFeatureProviderWithPatterns. This is usually done from the diagram type provider.

Parameters:

dtp - The diagram type provider associated with this feature provider.

Method Details

addPattern

public void addPattern(IPattern pattern)

Adds a pattern defined to handle shapes to the list of registered patterns. For adding connection-based patterns see addConnectionPattern(IConnectionPattern). The pattern must not be null, or a IllegalArgumentException will be thrown.

Specified by:

addPattern in interface IPatternContainer

Parameters:

pattern - The Pattern to add

addConnectionPattern

public void addConnectionPattern(IConnectionPattern pattern)

Adds a pattern defined to handle connections to the list of registered patterns. For adding shape-based patterns see addPattern(IPattern). The pattern must not be null, or a IllegalArgumentException will be thrown.

Parameters:

pattern - The Pattern to add

getPatterns

protected List<IPattern> getPatterns()

Returns a new list of the registered patterns that deal with shapes inside this feature provider.

Returns:

A List of the registered shape-based patterns.

getConnectionPatterns

protected List<IConnectionPattern> getConnectionPatterns()

Returns a new list of the registered patterns that deal with sonnection inside this feature provider.

Returns:

A List of the registered connection-based patterns.

checkFeatureAndContext

protected boolean checkFeatureAndContext(IFeature feature,
 IContext context)

Checks if a feature along with its context is available. Delegates to the IFeature.isAvailable(IContext) method.

Parameters:

feature - The feature to check

context - The according context

Returns:

true, if the feature is available, false otherwise.

getAddFeature

public IAddFeature getAddFeature(IAddContext context)

Tries to retrieve an add feature suiting the given add context from the registered patterns. First the shape patterns, then the connection patterns are queried. If no suitable pattern functionality is found the call is delegated to the super class (via the method getAddFeatureAdditional(IAddContext)).

Specified by:

getAddFeature in interface IFeatureProvider

Overrides:

getAddFeature in class AbstractFeatureProvider

Parameters:

context - An IAddContext describing the needed functionality

Returns:

An IAddFeature in case a suitable functionality has been found, null otherwise.

See Also:

• IAddFeature

getAddFeatureAdditional

protected IAddFeature getAddFeatureAdditional(IAddContext context)

Gets the additional add feature functionality. The default implementation simply delegates to AbstractFeatureProvider.getAddFeature(IAddContext).

Parameters:

context - An IAddContext describing the needed functionality

Returns:

An IAddFeature in case a suitable functionality has been found by the super class, null otherwise.

getCreateFeatures

public ICreateFeature[] getCreateFeatures()

Retrieves an array of create features that are available from the registered patterns and the super class of this feature provider. Only the shape patterns are queried. Then the call is delegated to the super class (via the method getCreateConnectionFeaturesAdditional()).

Specified by:

getCreateFeatures in interface IFeatureProvider

Overrides:

getCreateFeatures in class AbstractFeatureProvider

Returns:

An array of ICreateFeatures in case a suitable functionality has been found, an empty array otherwise.

See Also:

• ICreateFeature

getCreateFeaturesAdditional

protected ICreateFeature[] getCreateFeaturesAdditional()

Gets the additional create feature functionality. The default implementation simply delegates to AbstractFeatureProvider.getCreateFeatures().

Returns:

An array of ICreateFeatures in case a suitable functionality has been found by the super class, an empty array otherwise.

getDeleteFeature

public IDeleteFeature getDeleteFeature(IDeleteContext context)

Tries to retrieve a delete feature suiting the given delete context from the registered patterns. Only the shape patterns are queried. If no suitable pattern functionality is found the call is delegated to the super class (via the method getDeleteFeatureAdditional(IDeleteContext)).

Specified by:

getDeleteFeature in interface IFeatureProvider

Overrides:

getDeleteFeature in class DefaultFeatureProvider

Parameters:

context - An IDeleteContext describing the needed functionality

Returns:

An IDeleteFeature in case a suitable functionality has been found, null otherwise.

See Also:

• IDeleteFeature

getDeleteFeatureAdditional

protected IDeleteFeature getDeleteFeatureAdditional(IDeleteContext context)

Gets the additional delete feature functionality. The default implementation simply delegates to DefaultFeatureProvider.getDeleteFeature(IDeleteContext).

Parameters:

context - An IDeleteContext describing the needed functionality

Returns:

An IDeleteFeature in case a suitable functionality has been found by the super class, null otherwise.

getRemoveFeature

public IRemoveFeature getRemoveFeature(IRemoveContext context)

Tries to retrieve a remove feature suiting the given remove context from the registered patterns. Only the shape patterns are queried. If no suitable pattern functionality is found the call is delegated to the super class (via the method getRemoveFeatureAdditional(IRemoveContext)).

Specified by:

getRemoveFeature in interface IFeatureProvider

Overrides:

getRemoveFeature in class DefaultFeatureProvider

Parameters:

context - An IRemoveContext describing the needed functionality

Returns:

An IRemoveFeature in case a suitable functionality has been found, null otherwise.

See Also:

• IRemoveFeature

getRemoveFeatureAdditional

protected IRemoveFeature getRemoveFeatureAdditional(IRemoveContext context)

Gets the additional remove feature functionality. The default implementation simply delegates to DefaultFeatureProvider.getRemoveFeature(IRemoveContext).

Parameters:

context - An IRemoveContext describing the needed functionality

Returns:

An IRemoveFeature in case a suitable functionality has been found by the super class, null otherwise.

getLayoutFeature

public ILayoutFeature getLayoutFeature(ILayoutContext context)

Tries to retrieve a layout feature suiting the given layout context from the registered patterns. Only the shape patterns are queried. If no suitable pattern functionality is found the call is delegated to the super class (via the method getLayoutFeatureAdditional(ILayoutContext)).

Specified by:

getLayoutFeature in interface IFeatureProvider

Overrides:

getLayoutFeature in class AbstractFeatureProvider

Parameters:

context - An ILayoutContext describing the needed functionality

Returns:

An ILayoutFeature in case a suitable functionality has been found, null otherwise.

See Also:

• ILayoutFeature

getLayoutFeatureAdditional

protected ILayoutFeature getLayoutFeatureAdditional(ILayoutContext context)

Gets the additional layout feature functionality. The default implementation simply delegates to AbstractFeatureProvider.getLayoutFeature(ILayoutContext).

Parameters:

context - An ILayoutContext describing the needed functionality

Returns:

An ILayoutFeature in case a suitable functionality has been found by the super class, null otherwise.

getMoveShapeFeature

public IMoveShapeFeature getMoveShapeFeature(IMoveShapeContext context)

Tries to retrieve a move feature for shapes suiting the given move context from the registered patterns. Only the shape patterns are queried. If no suitable pattern functionality is found the call is delegated to the super class (via the method getMoveShapeFeatureAdditional(IMoveShapeContext)).

Specified by:

getMoveShapeFeature in interface IFeatureProvider

Overrides:

getMoveShapeFeature in class DefaultFeatureProvider

Parameters:

context - An IMoveShapeContext describing the needed functionality

Returns:

An IMoveShapeFeature in case a suitable functionality has been found, null otherwise.

See Also:

• IMoveShapeFeature

getMoveShapeFeatureAdditional

protected IMoveShapeFeature getMoveShapeFeatureAdditional(IMoveShapeContext context)

Gets the additional move feature functionality for shapes. The default implementation simply delegates to DefaultFeatureProvider.getMoveShapeFeature(IMoveShapeContext).

Parameters:

context - An IMoveShapeContext describing the needed functionality

Returns:

An IMoveShapeFeature in case a suitable functionality has been found by the super class, null otherwise.

getResizeShapeFeature

public IResizeShapeFeature getResizeShapeFeature(IResizeShapeContext context)

Tries to retrieve a resize feature for shapes suiting the given resize context from the registered patterns. Only the shape patterns are queried. If no suitable pattern functionality is found the call is delegated to the super class (via the method getResizeShapeFeatureAdditional(IResizeShapeContext)).

Specified by:

getResizeShapeFeature in interface IFeatureProvider

Overrides:

getResizeShapeFeature in class DefaultFeatureProvider

Parameters:

context - An IResizeShapeContext describing the needed functionality

Returns:

An IResizeShapeFeature in case a suitable functionality has been found, null otherwise.

See Also:

• IResizeShapeFeature

checkPattern

protected boolean checkPattern(IPattern pattern,
 Object object)

Checks the given pattern if it can deal with the given domain object. The default implementation simply delegates to the pattern's IPattern.isMainBusinessObjectApplicable(Object) method.

Parameters:

pattern - The pattern to check

object - The domain object

Returns:

true, if the pattern can handle the domain object, false otherwise.

getResizeShapeFeatureAdditional

protected IResizeShapeFeature getResizeShapeFeatureAdditional(IResizeShapeContext context)

Gets the additional resize feature functionality for shapes. The default implementation simply delegates to DefaultFeatureProvider.getResizeShapeFeature(IResizeShapeContext) .

Parameters:

context - An IResizeShapeContext describing the needed functionality

Returns:

An IResizeShapeFeature in case a suitable functionality has been found by the super class, null otherwise.

getUpdateFeature

public IUpdateFeature getUpdateFeature(IUpdateContext context)

Tries to retrieve an update feature suiting the given update context from the registered patterns. Only the shape patterns are queried. If no suitable pattern functionality is found the call is delegated to the super class (via the method getUpdateFeatureAdditional(IUpdateContext)).

Specified by:

getUpdateFeature in interface IFeatureProvider

Overrides:

getUpdateFeature in class DefaultFeatureProvider

Parameters:

context - An IUpdateContext describing the needed functionality

Returns:

An IUpdateFeature in case a suitable functionality has been found, null otherwise.

See Also:

• IUpdateFeature

getUpdateFeatureAdditional

protected IUpdateFeature getUpdateFeatureAdditional(IUpdateContext context)

Gets the additional update feature functionality. The default implementation simply delegates to DefaultFeatureProvider.getUpdateFeature(IUpdateContext) .

Parameters:

context - An IUpdateContext describing the needed functionality

Returns:

An IUpdateFeature in case a suitable functionality has been found by the super class, null otherwise.

getPatternForPictogramElement

public IPattern getPatternForPictogramElement(PictogramElement pe)

Description copied from interface: IFeatureProviderWithPatterns

Gets the pattern for pictogram element.

Specified by:

getPatternForPictogramElement in interface IFeatureProviderWithPatterns

Parameters:

pe - the pictogram element

Returns:

the pattern for pictogram element

activateDirectEditingForPatterns

public void activateDirectEditingForPatterns(PictogramElement mainPictogramElement,
 Object domainObject)

Convenience method to activate the direct editing for the given PictogramElement and domain object. The default implementation tries to retrieve the direct editing functionality from the registered patterns for shapes.

Specified by:

activateDirectEditingForPatterns in interface IFeatureProviderWithPatterns

Parameters:

mainPictogramElement - The root PictogramElement for which direct editing shall be triggered. This pictogram element is used to find a suitable pattern for this request via AbstractPattern.isPatternRoot(PictogramElement).

domainObject - The domain object behind the direct editing request. This object is passed to the IDirectEditingInfo.

activateDirectEditingForPatterns

public void activateDirectEditingForPatterns(PictogramElement mainPictogramElement,
 Object domainObject,
 String keyProperty)

Convenience method to activate the direct editing for the given PictogramElement and domain object. The default implementation tries to retrieve the direct editing functionality from the registered patterns for shapes.

Specified by:

activateDirectEditingForPatterns in interface IFeatureProviderWithPatterns

Parameters:

mainPictogramElement - The root PictogramElement for which direct editing shall be triggered. This pictogram element is used to find a suitable pattern for this request via AbstractPattern.isPatternRoot(PictogramElement).

domainObject - The domain object behind the direct editing request. This object is passed to the IDirectEditingInfo.

keyProperty - An additional key property that is passed to the IDirectEditingInfo.

getCreateConnectionFeatures

public ICreateConnectionFeature[] getCreateConnectionFeatures()

Retrieves an array of create connection features that are available from the registered patterns and the super class of this feature provider. Only the connection patterns are queried. Then the call is delegated to the super class (via the method getCreateConnectionFeaturesAdditional()).

Specified by:

getCreateConnectionFeatures in interface IFeatureProvider

Overrides:

getCreateConnectionFeatures in class AbstractFeatureProvider

Returns:

An array of ICreateConnectionFeatures in case a suitable functionality has been found, an empty array otherwise.

See Also:

• ICreateConnectionFeature

getCreateConnectionFeaturesAdditional

protected ICreateConnectionFeature[] getCreateConnectionFeaturesAdditional()

Gets the additional create connection feature functionality. The default implementation simply delegates to AbstractFeatureProvider.getCreateConnectionFeatures().

Returns:

An array of ICreateConnectionFeatures in case a suitable functionality has been found by the super class, an empty array otherwise.

getDirectEditingFeature

public IDirectEditingFeature getDirectEditingFeature(IDirectEditingContext context)

Tries to retrieve a direct editing feature suiting the given direct editing context from the registered patterns. Only the shape patterns are queried. If no suitable pattern functionality is found the call is delegated to the super class (via the method getDirectEditingFeatureAdditional(IDirectEditingContext)).

Specified by:

getDirectEditingFeature in interface IFeatureProvider

Overrides:

getDirectEditingFeature in class AbstractFeatureProvider

Parameters:

context - An IDirectEditingContext describing the needed functionality

Returns:

An IDirectEditingFeature in case a suitable functionality has been found, null otherwise.

See Also:

• IDirectEditingFeature

getDirectEditingFeatureAdditional

protected IDirectEditingFeature getDirectEditingFeatureAdditional(IDirectEditingContext context)

Gets the additional direct editing feature functionality. The default implementation simply delegates to AbstractFeatureProvider.getDirectEditingFeature(IDirectEditingContext) .

Parameters:

context - An IDirectEditingContext describing the needed functionality

Returns:

An IDirectEditingFeature in case a suitable functionality has been found by the super class, null otherwise.

traceWarning

protected void traceWarning(String string,
 IPattern pattern,
 IPattern choosenPattern)

Helper method to trace warnings when more than one pattern is executed.

Parameters:

string - The string information to trace

pattern - The pattern

choosenPattern - The additionally chosen pattern

getBusinessObjectForPictogramElement

public Object getBusinessObjectForPictogramElement(PictogramElement pictogramElement)

Helper method to find the domain object for a given PictogramElement. The default implementation first delegates to AbstractFeatureProvider.getBusinessObjectForPictogramElement(PictogramElement) and then directly tries to follow an eventually set link property, see ILinkService.setLinkProperty(PictogramElement, String).

Specified by:

getBusinessObjectForPictogramElement in interface IMappingProvider

Overrides:

getBusinessObjectForPictogramElement in class AbstractFeatureProvider

Parameters:

pictogramElement - The PictogramElement to find the domain object for.

Returns:

A domain object in case it was found, null otherwise.

See Also:

• IMappingProvider.link(PictogramElement, Object)