Package org.eclipse.gef.fx.anchors

Class DynamicAnchor

java.lang.Object

org.eclipse.gef.fx.anchors.AbstractAnchor

org.eclipse.gef.fx.anchors.DynamicAnchor

All Implemented Interfaces:

IAnchor

public class DynamicAnchor
extends AbstractAnchor

The DynamicAnchor computes anchor positions through a IComputationStrategy. The strategy performs the position calculation based on IComputationStrategy.Parameters, which are controlled by the DynamicAnchor.

Property Summary

Properties

Type	Property	Description
protected ReadOnlySetProperty<IComputationStrategy.Parameter<?>>	anchorageComputationParameters	Returns a ReadOnlySetProperty that provides the computation parameters of kind IComputationStrategy.Parameter.Kind.ANCHORAGE.
protected ReadOnlySetMultimapProperty<AnchorKey,IComputationStrategy.Parameter<?>>	anchoredComputationParameters	Returns a ReadOnlySetMultimapProperty that provides the computation parameters of kind IComputationStrategy.Parameter.Kind.ANCHORED per AnchorKey.

Properties inherited from class org.eclipse.gef.fx.anchors.AbstractAnchor

anchorage, positionsUnmodifiable

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	DynamicAnchor.AnchorageReferenceGeometry	An IComputationStrategy.Parameter that encapsulates an (anchorage) reference geometry.
static class	DynamicAnchor.AnchorageReferencePosition	An IComputationStrategy.Parameter that encapsulates an (anchorage) reference point.
static class	DynamicAnchor.AnchoredReferencePoint	An IComputationStrategy.Parameter that encapsulates a projection reference point.
static class	DynamicAnchor.PreferredOrientation	An IComputationStrategy.Parameter that encapsulates the preferred orientation to be used for orthogonal projections.

Constructor Summary

Constructors

Constructor	Description
DynamicAnchor(Node anchorage)	Constructs a new DynamicAnchor for the given anchorage visual that uses a ChopBoxStrategy as computation strategy.
DynamicAnchor(Node anchorage, IComputationStrategy computationStrategy)	Constructs a new DynamicAnchor for the given anchorage visual using the given IComputationStrategy.

Method Summary

Modifier and Type	Method	Description
protected ReadOnlySetProperty<IComputationStrategy.Parameter<?>>	anchorageComputationParametersProperty()	Returns a ReadOnlySetProperty that provides the computation parameters of kind IComputationStrategy.Parameter.Kind.ANCHORAGE.
protected ReadOnlySetMultimapProperty<AnchorKey,IComputationStrategy.Parameter<?>>	anchoredComputationParametersProperty()	Returns a ReadOnlySetMultimapProperty that provides the computation parameters of kind IComputationStrategy.Parameter.Kind.ANCHORED per AnchorKey.
void	attach(AnchorKey key)	Attaches the given AnchorKey to this IAnchor.
protected Point	computePosition(AnchorKey key)	Recomputes the position for the given attached AnchorKey by delegating to the respective IComputationStrategy.
void	detach(AnchorKey key)	Detaches the given AnchorKey from this IAnchor.
<T extends IComputationStrategy.Parameter<?>> T	getComputationParameter(Class<T> parameterType)	Retrieves a computation parameter of the respective type.
<T extends IComputationStrategy.Parameter<?>> T	getComputationParameter(AnchorKey key, Class<T> parameterType)	Retrieves a computation parameter of the respective type for the given AnchorKey.
IComputationStrategy	getComputationStrategy()	Returns the IComputationStrategy used by this DynamicAnchor.
protected Set<IComputationStrategy.Parameter<?>>	getParameters(AnchorKey key)	Retrieves the relevant parameters for the computation of the given AnchorKey.
void	setComputationStrategy(IComputationStrategy computationStrategy)	Sets the given IComputationStrategy to be used by this IAnchor.

Methods inherited from class org.eclipse.gef.fx.anchors.AbstractAnchor

anchorageProperty, getAnchorage, getKeys, getKeysByNode, getPosition, getPositionsUnmodifiable, isAttached, positionsUnmodifiableProperty, registerVCL, registerVCLs, setAnchorage, unregisterVCL, unregisterVCLs, updatePosition, updatePositions

Methods inherited from class java.lang.Object

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

Property Details

anchorageComputationParameters

protected ReadOnlySetProperty<IComputationStrategy.Parameter<?>> anchorageComputationParametersProperty

Returns a ReadOnlySetProperty that provides the computation parameters of kind IComputationStrategy.Parameter.Kind.ANCHORAGE.

anchoredComputationParameters

protected ReadOnlySetMultimapProperty<AnchorKey,IComputationStrategy.Parameter<?>> anchoredComputationParametersProperty

Returns a ReadOnlySetMultimapProperty that provides the computation parameters of kind IComputationStrategy.Parameter.Kind.ANCHORED per AnchorKey. The set of computation parameters for each AnchorKey is initialed by the responsible computation strategy.

Constructor Details

DynamicAnchor

public DynamicAnchor(Node anchorage)

Constructs a new DynamicAnchor for the given anchorage visual that uses a ChopBoxStrategy as computation strategy. The anchor will also add a default binding for the DynamicAnchor.AnchorageReferenceGeometry computation parameter, which is required by the ChopBoxStrategy, that infers the geometry from the anchorage's shape outline.

Parameters:

anchorage - The anchorage visual.

DynamicAnchor

public DynamicAnchor(Node anchorage,
 IComputationStrategy computationStrategy)

Constructs a new DynamicAnchor for the given anchorage visual using the given IComputationStrategy. The anchor will also add a default binding for the DynamicAnchor.AnchorageReferenceGeometry computation parameter, inferring the geometry from the anchorage's shape outline, in case this parameter is required by the given IComputationStrategy.

Parameters:

anchorage - The anchorage visual.

computationStrategy - The IComputationStrategy to use.

Method Details

anchorageComputationParametersProperty

protected ReadOnlySetProperty<IComputationStrategy.Parameter<?>> anchorageComputationParametersProperty()

Returns a ReadOnlySetProperty that provides the computation parameters of kind IComputationStrategy.Parameter.Kind.ANCHORAGE.

anchoredComputationParametersProperty

protected ReadOnlySetMultimapProperty<AnchorKey,IComputationStrategy.Parameter<?>> anchoredComputationParametersProperty()

Returns a ReadOnlySetMultimapProperty that provides the computation parameters of kind IComputationStrategy.Parameter.Kind.ANCHORED per AnchorKey. The set of computation parameters for each AnchorKey is initialed by the responsible computation strategy.

attach

public void attach(AnchorKey key)

Description copied from interface: IAnchor

Attaches the given AnchorKey to this IAnchor.

Specified by:

attach in interface IAnchor

Overrides:

attach in class AbstractAnchor

Parameters:

key - The AnchorKey to be attached.

computePosition

protected Point computePosition(AnchorKey key)

Recomputes the position for the given attached AnchorKey by delegating to the respective IComputationStrategy.

Specified by:

computePosition in class AbstractAnchor

Parameters:

key - The AnchorKey for which to compute an anchor position.

Returns:

The point for the given AnchorKey in local coordinates of the anchored Node.

detach

public void detach(AnchorKey key)

Description copied from interface: IAnchor

Detaches the given AnchorKey from this IAnchor.

Specified by:

detach in interface IAnchor

Overrides:

detach in class AbstractAnchor

Parameters:

key - The AnchorKey to be detached.

getComputationParameter

public <T extends IComputationStrategy.Parameter<?>>
T getComputationParameter(AnchorKey key,
 Class<T> parameterType)

Retrieves a computation parameter of the respective type for the given AnchorKey.

Type Parameters:

T - The value type of the computation parameter.

Parameters:

key - The AnchorKey for which to retrieve the anchored parameter.

parameterType - The type of computation parameter.

Returns:

The anchored computation parameter.

getComputationParameter

public <T extends IComputationStrategy.Parameter<?>>
T getComputationParameter(Class<T> parameterType)

Retrieves a computation parameter of the respective type.

Type Parameters:

T - The value type of the computation parameter.

Parameters:

parameterType - The type of computation parameter.

Returns:

The anchored computation parameter.

getComputationStrategy

public IComputationStrategy getComputationStrategy()

Returns the IComputationStrategy used by this DynamicAnchor.

Returns:

The IComputationStrategy.

getParameters

protected Set<IComputationStrategy.Parameter<?>> getParameters(AnchorKey key)

Retrieves the relevant parameters for the computation of the given AnchorKey.

Parameters:

key - The AnchorKey of relevance.

Returns:

The parameters required by the computation strategy to compute the position for the given AnchorKey.

setComputationStrategy

public void setComputationStrategy(IComputationStrategy computationStrategy)

Sets the given IComputationStrategy to be used by this IAnchor.

Parameters:

computationStrategy - The IComputationStrategy that will be used to compute positions for all attached AnchorKeys.