fdda.graphics
Class ComponentFactory

java.lang.Object
  |
  +--fdda.graphics.ComponentFactory

Direct Known Subclasses:

Java2dFactory

public abstract class ComponentFactory

extends Object

Interface of the factory that produces graphical components. For different types of graphics, different factories may be used.

Author:

Jörg Rüdenauer

Constructor Summary

ComponentFactory()

Method Summary

abstract Container	createContainer() Creates a new container.
abstract GraphicalSystem	createGraphicalSystem() Creates a new graphical system.
abstract Line	createLine(Node startNode, Node endNode, boolean selected, boolean directed) Creates a new line
abstract Message	createMessage(Line line, boolean forward) Creates a new message.
abstract Node	createNode(double x, double y, boolean selected) Creates a new node.
abstract Selection	getComponentSelection() Creates a new selection.
static ComponentFactory	getInstance() Returns the concrete component factory.
static void	setFactory(ComponentFactory aFactory) Sets the factory that shall be used.

Methods inherited from class java.lang.Object

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

Constructor Detail

ComponentFactory

public ComponentFactory()

Method Detail

setFactory

public static final void setFactory(ComponentFactory aFactory)

Sets the factory that shall be used.

Parameters:

aFactory - the factory

getInstance

public static final ComponentFactory getInstance()

Returns the concrete component factory.

Returns:

the factory

createNode

public abstract Node createNode(double x,
                                double y,
                                boolean selected)

Creates a new node.

Parameters:

x - the x coordinate of the center point of the node

y - the y coordinate of the center point of the node

selected - whether the node shall be selected

Returns:

the newly created Node

createLine

public abstract Line createLine(Node startNode,
                                Node endNode,
                                boolean selected,
                                boolean directed)

Creates a new line

Parameters:

startNode - the start node for the line

endNode - the end node for the line

selected - whether the line shall be selected

directed - whether the line shall be directed

Returns:

the newly created Line

createContainer

public abstract Container createContainer()

Creates a new container.

Returns:

the newly created Container

createMessage

public abstract Message createMessage(Line line,
                                      boolean forward)

Creates a new message.

Parameters:

line - the line which transports the message

forward - whether the message runs in the designated direction of the line

Returns:

the newly created message

getComponentSelection

public abstract Selection getComponentSelection()

Creates a new selection. Note that this needs not be used often.

Returns:

the newly created Selection

createGraphicalSystem

public abstract GraphicalSystem createGraphicalSystem()

Creates a new graphical system.

Returns:

the newly created GraphicalSystem