fdda.graphics.java2d
Class Node

java.lang.Object
  |
  +--fdda.graphics.java2d.Component
        |
        +--fdda.graphics.java2d.Node

All Implemented Interfaces:

Cloneable, Component, Node, PropertyHolder, WorkingPart

public class Node

extends Component

implements Node

Implementation of the graphical representation of nodes for Java2D. A node is drawn as a filled circle, the label inside. Not working nodes are crossed out.

Author:

Jörg Rüdenauer

Field Summary

(package private) static double	RADIUS default radius for nodes
static Color	RED_CROSS_COLOR color of the cross that shows not working nodes
(package private) static double	REPEATER_RADIUS radius for repeaters

Fields inherited from class fdda.graphics.java2d.Component

COLOR_NORMAL, COLOR_SELECTED, dirtyShape, selected, shape, x, y

Fields inherited from interface fdda.graphics.Component

SEL_ALL, SEL_EQUALS, SEL_MOVABLES, SEL_NOTHING

Constructor Summary

Node(double x, double y)
Default connstructor.

Node(double x, double y, boolean selected)
Constructor

Method Summary

void	addProperty(Property property) Adds a property to the holder.
void	addPropertyListener(PropertyListener pl) Adds a PropertyListener (Observer pattern).
protected void	calcShape() Recalculates the shape.
void	changeProperty(Property property) Changes a property of the holder - i.e., replaces the property with the name of the parameter property with the parameter.
Object	clone() Clones the component
void	draw(Graphics2D graphContext) Draws the component, using the given graphics.
void	firePropertyChanged(Property property) Informs the listeners that a property has been changed.
double	getLineStartX() Returns the x coordinate of the point where lines should start.
double	getLineStartY() Returns the y coordinate of the point where lines should start.
Node	getModelNode() Returns the model node which is symbolized by this node.
Color	getPrimaryColor() Returns the main color of the node.
Iterator	getProperties() Returns an Iterator over the properties of the holder.
Property	getProperty(String name) Returns a property of the holder.
double	getRadius() Returns the radius of the node
Color	getSecondaryColor() Returns the secondary color of the node.
boolean	isMovable() Returns true.
boolean	isWorking() Returns whether the component is working.
void	move(double x, double y) Move the component (or its most prominent point).
void	removeProperty(Property property) Removes a property from the holder.
void	removePropertyListener(PropertyListener listener) Removes a PropertyListener (Observer pattern).
void	repaint() Refreshes the graphics.
int	selectableWith() Returns SEL_MOVABLES
void	setModelNode(Node modelNode) Sets the model node which is symbolized by this node.
void	setPrimaryColor(Color color) Sets the main color of the node.
void	setSecondaryColor(Color color) Sets the secondary color of the node.
void	setWorking(boolean working) Sets whether the component is working.
Object	visit(ComponentVisitor visitor) Calls visitNode according to visitor pattern

Methods inherited from class fdda.graphics.java2d.Component

deselect, getGraphicalSystem, getShape, getX, getY, isSelected, recalculateShape, select, setGraphicalSystem, setXY

Methods inherited from class java.lang.Object

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

Methods inherited from interface fdda.graphics.Component

deselect, getGraphicalSystem, getShape, getX, getY, isSelected, recalculateShape, select, setGraphicalSystem, setXY

Field Detail

RADIUS

static final double RADIUS

default radius for nodes

See Also:

Constant Field Values

REPEATER_RADIUS

static final double REPEATER_RADIUS

radius for repeaters

See Also:

Constant Field Values

RED_CROSS_COLOR

public static final Color RED_CROSS_COLOR

color of the cross that shows not working nodes

Constructor Detail

Node

public Node(double x,
            double y)

Default connstructor. Node is not selected.

Parameters:

x - the x coordinate

y - the y coordinate

Node

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

Constructor

Parameters:

x - the x coordinate

y - the y coordinate

selected - whether the node shall be selected

Method Detail

clone

public Object clone()

Description copied from interface: Component

Clones the component

Specified by:

clone in interface Component

Overrides:

clone in class Component

Returns:

the clone

isMovable

public boolean isMovable()

Returns true.

Specified by:

isMovable in interface Component

Returns:

true, iff the user can move the component

See Also:

Component.isMovable()

move

public void move(double x,
                 double y)

Description copied from interface: Component

Move the component (or its most prominent point).

Specified by:

move in interface Component

Parameters:

x - offset for move in x direction

y - offset for move in y direction

selectableWith

public int selectableWith()

Returns SEL_MOVABLES

Specified by:

selectableWith in interface Component

Returns:

constant indicating the selection class

See Also:

Component.selectableWith()

draw

public void draw(Graphics2D graphContext)

Description copied from class: Component

Draws the component, using the given graphics. The graphics should have the same attributes (color, pen, etc.) after the call as before the call.

Specified by:

draw in class Component

Parameters:

graphContext - the graphics

repaint

public void repaint()

Description copied from interface: Node

Refreshes the graphics.

Specified by:

repaint in interface Node

getLineStartX

public double getLineStartX()

Description copied from interface: Node

Returns the x coordinate of the point where lines should start.

Specified by:

getLineStartX in interface Node

Returns:

the x coordinate of the line start point

getLineStartY

public double getLineStartY()

Description copied from interface: Node

Returns the y coordinate of the point where lines should start.

Specified by:

getLineStartY in interface Node

Returns:

the y coordinate of the line start point

getRadius

public double getRadius()

Returns the radius of the node

Returns:

the radius

visit

public Object visit(ComponentVisitor visitor)

Calls visitNode according to visitor pattern

Specified by:

visit in interface Component

Parameters:

visitor - the visitor

Returns:

specific to subclass

See Also:

Component.visit(fdda.graphics.ComponentVisitor)

setModelNode

public void setModelNode(Node modelNode)

Description copied from interface: Node

Sets the model node which is symbolized by this node.

Specified by:

setModelNode in interface Node

Parameters:

modelNode - the model node

getModelNode

public Node getModelNode()

Description copied from interface: Node

Returns the model node which is symbolized by this node.

Specified by:

getModelNode in interface Node

Returns:

the model node

getPrimaryColor

public Color getPrimaryColor()

Description copied from interface: Node

Returns the main color of the node.

Specified by:

getPrimaryColor in interface Node

Returns:

the main color.

setPrimaryColor

public void setPrimaryColor(Color color)

Description copied from interface: Node

Sets the main color of the node. May be ignored by implementations.

Specified by:

setPrimaryColor in interface Node

Parameters:

color - the main color

getSecondaryColor

public Color getSecondaryColor()

Description copied from interface: Node

Returns the secondary color of the node.

Specified by:

getSecondaryColor in interface Node

Returns:

the secondary color

setSecondaryColor

public void setSecondaryColor(Color color)

Description copied from interface: Node

Sets the secondary color of the node. May be ignored by implementations.

Specified by:

setSecondaryColor in interface Node

Parameters:

color - the secondary color.

addProperty

public void addProperty(Property property)

Description copied from interface: PropertyHolder

Adds a property to the holder. If a property with the same name already exists, it is removed.

Specified by:

addProperty in interface PropertyHolder

removeProperty

public void removeProperty(Property property)

Description copied from interface: PropertyHolder

Removes a property from the holder. The key for removal is the name of the property; if no property with that name exists, nothing happens.

Specified by:

removeProperty in interface PropertyHolder

Parameters:

property - the property to be removed, must not be null

changeProperty

public void changeProperty(Property property)

Description copied from interface: PropertyHolder

Changes a property of the holder - i.e., replaces the property with the name of the parameter property with the parameter. If no such property exists, the property is simply added to the holder; in this case, a propertyAdded event instead of a propertyChanged event is fired.

Specified by:

changeProperty in interface PropertyHolder

Parameters:

property - the new property, must not be null

getProperty

public Property getProperty(String name)

Description copied from interface: PropertyHolder

Returns a property of the holder. If no property with the specified name exists, null is returned.

Specified by:

getProperty in interface PropertyHolder

Parameters:

name - the name of the property

Returns:

the property

getProperties

public Iterator getProperties()

Description copied from interface: PropertyHolder

Returns an Iterator over the properties of the holder.

Specified by:

getProperties in interface PropertyHolder

Returns:

an Iterator over the properties

addPropertyListener

public void addPropertyListener(PropertyListener pl)

Description copied from interface: PropertyHolder

Adds a PropertyListener (Observer pattern).

Specified by:

addPropertyListener in interface PropertyHolder

Parameters:

pl - the listener to be added

See Also:

EventListenerList

removePropertyListener

public void removePropertyListener(PropertyListener listener)

Description copied from interface: PropertyHolder

Removes a PropertyListener (Observer pattern).

Specified by:

removePropertyListener in interface PropertyHolder

Parameters:

listener - the listener to be removed

See Also:

EventListenerList

firePropertyChanged

public void firePropertyChanged(Property property)

Description copied from interface: PropertyHolder

Informs the listeners that a property has been changed. Note that the property holder can't determine by himself whether a property is changed internally; therefore, the property must inform its holder of any changes. This method must only be called by implementing classes of either PropertyHolder or Property.

Specified by:

firePropertyChanged in interface PropertyHolder

Parameters:

property - the property that was changed.

isWorking

public boolean isWorking()

Description copied from interface: WorkingPart

Returns whether the component is working.

Specified by:

isWorking in interface WorkingPart

Returns:

whether the component is working

setWorking

public void setWorking(boolean working)

Description copied from interface: WorkingPart

Sets whether the component is working.

Specified by:

setWorking in interface WorkingPart

Parameters:

working - whether the component is working

calcShape

protected void calcShape()

Description copied from class: Component

Recalculates the shape. Is called by getShape if the flag dirtyShape is set. Must unset the flag after calculation.

Specified by:

calcShape in class Component