org.gephi.layout.spi

Interface Layout

public interface Layout

A Layout algorithm should implement the Layout interface to allow the LayoutController to run it properly.

See the LayoutBuilder documentation to know how layout should be instanciated.

To have fully integrated properties that can be changed in real-time by users, properly define the various LayoutProperty returned by the getProperties() method and provide getter and setter for each.

Author:

Helder Suzuki

See Also:

LayoutBuilder

Method Summary

Modifier and Type	Method and Description
boolean	canAlgo() Tests if the algorithm can run, called before each pass.
void	endAlgo() Called when the algorithm is finished (canAlgo() returns false).
LayoutBuilder	getBuilder() The reference to the LayoutBuilder that instanciated this Layout.
LayoutProperty[]	getProperties() The properties for this layout.
void	goAlgo() Run a step in the algorithm, should be called only if canAlgo() returns true.
void	initAlgo() initAlgo() is called to initialize the algorithm (prepare to run).
void	resetPropertiesValues() Resets the properties values to the default values.
void	setGraphModel(GraphModel graphModel) Injects the graph model for the graph this Layout should operate on.

Method Detail

initAlgo

void initAlgo()

initAlgo() is called to initialize the algorithm (prepare to run).

setGraphModel

void setGraphModel(GraphModel graphModel)

Injects the graph model for the graph this Layout should operate on.

It's preferable to get visible graph to perform on visualization.

Parameters:

graphModel - the graph model that the layout is to be working on

goAlgo

void goAlgo()

Run a step in the algorithm, should be called only if canAlgo() returns true.

canAlgo

boolean canAlgo()

Tests if the algorithm can run, called before each pass.

Returns:

true if the algorithm can run, false otherwise

endAlgo

void endAlgo()

Called when the algorithm is finished (canAlgo() returns false).

getProperties

LayoutProperty[] getProperties()

The properties for this layout.

Returns:

the layout properties

Throws:

NoSuchMethodException

resetPropertiesValues

void resetPropertiesValues()

Resets the properties values to the default values.

getBuilder

LayoutBuilder getBuilder()

The reference to the LayoutBuilder that instanciated this Layout.

Returns:

the reference to the builder that builts this instance