I

IPortStyleRenderer

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Interface used by IPortStyle implementations that can be used to query the actual IVisualCreator, IBoundsProvider, IHitTestable, IVisibilityTestable, IMarqueeTestable, and ILassoTestable implementations for a port and an associated style.
Inheritance Hierarchy

Remarks

Implementations of this interface should be designed to be shareable between multiple style instances and should therefore not contain style-specific state.

See Also

API

IPortStyle, IPort, INodeStyleRenderer, IEdgeStyleRenderer, ILabelStyleRenderer

Members

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Methods

getBoundsProvider

(port: IPort, style: IPortStyle): IBoundsProvider
abstract
Gets an implementation of the IBoundsProvider interface that can handle the provided port and its associated style.
This method may return a flyweight implementation.
abstract

Parameters

port: IPort
The port to provide an instance for
style: IPortStyle
The style to use for calculating the rendering bounds

Return Value

IBoundsProvider
An implementation that may be used to subsequently query the port's rendering bounds. Clients should not cache this instance and must always call this method immediately before using the value returned. This enables the use of the flyweight design pattern for implementations

getContext

(port: IPort, style: IPortStyle): ILookup
abstract
Gets a temporary context instance that can be used to query additional information for the port's style.
Implementations may return EMPTY if they do not support this, but may not return null.
abstract

Parameters

port: IPort
The port to provide a context instance for.
style: IPortStyle
The style to use for the context.

Return Value

ILookup
A non-null lookup implementation.

See Also

API
ILookup

getHitTestable

(port: IPort, style: IPortStyle): IHitTestable
abstract
Gets an implementation of the IHitTestable interface that can handle the provided port and its associated style.
This method may return a flyweight implementation.
abstract

Parameters

port: IPort
The port to provide an instance for
style: IPortStyle
The style to use for calculating hit tests

Return Value

IHitTestable
An implementation that may be used to subsequently perform hit tests. Clients should not cache this instance and must always call this method immediately before using the value returned. This enables the use of the flyweight design pattern for implementations. This method may return null to indicate that the port cannot be hit tested.

getLassoTestable

(port: IPort, style: IPortStyle): ILassoTestable
abstract
Gets an implementation of the ILassoTestable interface that can handle the provided port and its associated style.
This method may return a flyweight implementation.
abstract

Parameters

port: IPort
The port to provide an instance for
style: IPortStyle
The style to use for calculating lasso intersection tests

Return Value

ILassoTestable
An implementation that may be used to subsequently query the lasso intersections. Clients should not cache this instance and must always call this method immediately before using the value returned. This enables the use of the flyweight design pattern for implementations

getMarqueeTestable

(port: IPort, style: IPortStyle): IMarqueeTestable
abstract
Gets an implementation of the IMarqueeTestable interface that can handle the provided port and its associated style.
This method may return a flyweight implementation.
abstract

Parameters

port: IPort
The port to provide an instance for
style: IPortStyle
The style to use for calculating marquee intersection tests

Return Value

IMarqueeTestable
An implementation that may be used to subsequently query the marquee intersections. Clients should not cache this instance and must always call this method immediately before using the value returned. This enables the use of the flyweight design pattern for implementations

getVisibilityTestable

(port: IPort, style: IPortStyle): IVisibilityTestable
abstract
Gets an implementation of the IVisibilityTestable interface that can handle the provided port and its associated style.
This method may return a flyweight implementation.
abstract

Parameters

port: IPort
The port to provide an instance for
style: IPortStyle
The style to use for testing the visibility

Return Value

IVisibilityTestable
An implementation that may be used to subsequently query the port's visibility. Clients should not cache this instance and must always call this method immediately before using the value returned. This enables the use of the flyweight design pattern for implementations

getVisualCreator

(port: IPort, style: IPortStyle): IVisualCreator
abstract
Gets an implementation of the IVisualCreator interface that can handle the provided port and its associated style.
This method may return a flyweight implementation, but never null.
abstract

Parameters

port: IPort
The port to provide an instance for
style: IPortStyle
The style to use for creating the port visualization

Return Value

IVisualCreator
An implementation that may be used to subsequently create or update the visual for the port. Clients should not cache this instance and must always call this method immediately before using the value returned. This enables the use of the flyweight design pattern for implementations. This method may not return null but should yield a void implementation instead.

See Also

API
VOID_VISUAL_CREATOR