org.jfree.chart.entity

Class ChartEntity

java.lang.Object

org.jfree.chart.entity.ChartEntity

All Implemented Interfaces:

java.io.Serializable, java.lang.Cloneable, org.jfree.util.PublicCloneable

Direct Known Subclasses:

AxisEntity, CategoryItemEntity, ContourEntity, JFreeChartEntity, LegendItemEntity, PieSectionEntity, PlotEntity, TickLabelEntity, TitleEntity, XYAnnotationEntity, XYItemEntity

public class ChartEntity
extends java.lang.Object
implements java.lang.Cloneable, org.jfree.util.PublicCloneable, java.io.Serializable

A class that captures information about some component of a chart (a bar, line etc).

See Also:

Serialized Form

Field Summary

Fields

Modifier and Type	Field and Description
private java.awt.Shape	area The area occupied by the entity (in Java 2D space).
private static long	serialVersionUID For serialization.
private java.lang.String	toolTipText The tool tip text for the entity.
private java.lang.String	urlText The URL text for the entity.

Constructor Summary

Constructors

Constructor and Description
ChartEntity(java.awt.Shape area) Creates a new chart entity.
ChartEntity(java.awt.Shape area, java.lang.String toolTipText) Creates a new chart entity.
ChartEntity(java.awt.Shape area, java.lang.String toolTipText, java.lang.String urlText) Creates a new entity.

Method Summary

Modifier and Type	Method and Description
java.lang.Object	clone() Returns a clone of the entity.
boolean	equals(java.lang.Object obj) Tests the entity for equality with an arbitrary object.
java.awt.Shape	getArea() Returns the area occupied by the entity (in Java 2D space).
java.lang.String	getImageMapAreaTag(ToolTipTagFragmentGenerator toolTipTagFragmentGenerator, URLTagFragmentGenerator urlTagFragmentGenerator) Returns an HTML image map tag for this entity.
private java.lang.String	getPolyCoords(java.awt.Shape shape) Returns a string containing the coordinates for a given shape.
private java.lang.String	getRectCoords(java.awt.geom.Rectangle2D rectangle) Returns a string containing the coordinates (x1, y1, x2, y2) for a given rectangle.
java.lang.String	getShapeCoords() Returns the shape coordinates as a string.
java.lang.String	getShapeType() Returns a string describing the entity area.
java.lang.String	getToolTipText() Returns the tool tip text for the entity.
java.lang.String	getURLText() Returns the URL text for the entity.
int	hashCode() Returns a hash code for this instance.
private void	readObject(java.io.ObjectInputStream stream) Provides serialization support.
void	setArea(java.awt.Shape area) Sets the area for the entity.
void	setToolTipText(java.lang.String text) Sets the tool tip text.
void	setURLText(java.lang.String text) Sets the URL text.
java.lang.String	toString() Returns a string representation of the chart entity, useful for debugging.
private void	writeObject(java.io.ObjectOutputStream stream) Provides serialization support.

Methods inherited from class java.lang.Object

finalize, getClass, notify, notifyAll, wait, wait, wait

Field Detail

serialVersionUID

private static final long serialVersionUID

For serialization.

See Also:

Constant Field Values

area

private transient java.awt.Shape area

The area occupied by the entity (in Java 2D space).

toolTipText

private java.lang.String toolTipText

The tool tip text for the entity.

urlText

private java.lang.String urlText

The URL text for the entity.

Constructor Detail

ChartEntity

public ChartEntity(java.awt.Shape area)

Creates a new chart entity.

Parameters:

area - the area (null not permitted).

ChartEntity

public ChartEntity(java.awt.Shape area,
                   java.lang.String toolTipText)

Creates a new chart entity.

Parameters:

area - the area (null not permitted).

toolTipText - the tool tip text (null permitted).

ChartEntity

public ChartEntity(java.awt.Shape area,
                   java.lang.String toolTipText,
                   java.lang.String urlText)

Creates a new entity.

Parameters:

area - the area (null not permitted).

toolTipText - the tool tip text (null permitted).

urlText - the URL text for HTML image maps (null permitted).

Method Detail

getArea

public java.awt.Shape getArea()

Returns the area occupied by the entity (in Java 2D space).

Returns:

The area (never null).

setArea

public void setArea(java.awt.Shape area)

Sets the area for the entity.

This class conveys information about chart entities back to a client. Setting this area doesn't change the entity (which has already been drawn).

Parameters:

area - the area (null not permitted).

getToolTipText

public java.lang.String getToolTipText()

Returns the tool tip text for the entity. Be aware that this text may have been generated from user supplied data, so for security reasons some form of filtering should be applied before incorporating this text into any HTML output.

Returns:

The tool tip text (possibly null).

setToolTipText

public void setToolTipText(java.lang.String text)

Sets the tool tip text.

Parameters:

text - the text (null permitted).

getURLText

public java.lang.String getURLText()

Returns the URL text for the entity. Be aware that this text may have been generated from user supplied data, so some form of filtering should be applied before this "URL" is used in any output.

Returns:

The URL text (possibly null).

setURLText

public void setURLText(java.lang.String text)

Sets the URL text.

Parameters:

text - the text (null permitted).

getShapeType

public java.lang.String getShapeType()

Returns a string describing the entity area. This string is intended for use in an AREA tag when generating an image map.

Returns:

The shape type (never null).

getShapeCoords

public java.lang.String getShapeCoords()

Returns the shape coordinates as a string.

Returns:

The shape coordinates (never null).

getRectCoords

private java.lang.String getRectCoords(java.awt.geom.Rectangle2D rectangle)

Returns a string containing the coordinates (x1, y1, x2, y2) for a given rectangle. This string is intended for use in an image map.

Parameters:

rectangle - the rectangle (null not permitted).

Returns:

Upper left and lower right corner of a rectangle.

getPolyCoords

private java.lang.String getPolyCoords(java.awt.Shape shape)

Returns a string containing the coordinates for a given shape. This string is intended for use in an image map.

Parameters:

shape - the shape (null not permitted).

Returns:

The coordinates for a given shape as string.

getImageMapAreaTag

public java.lang.String getImageMapAreaTag(ToolTipTagFragmentGenerator toolTipTagFragmentGenerator,
                                           URLTagFragmentGenerator urlTagFragmentGenerator)

Returns an HTML image map tag for this entity. The returned fragment should be XHTML 1.0 compliant.

Parameters:

toolTipTagFragmentGenerator - a generator for the HTML fragment that will contain the tooltip text (null not permitted if this entity contains tooltip information).

urlTagFragmentGenerator - a generator for the HTML fragment that will contain the URL reference (null not permitted if this entity has a URL).

Returns:

The HTML tag.

toString

public java.lang.String toString()

Returns a string representation of the chart entity, useful for debugging.

Overrides:

toString in class java.lang.Object

Returns:

A string.

equals

public boolean equals(java.lang.Object obj)

Tests the entity for equality with an arbitrary object.

Overrides:

equals in class java.lang.Object

Parameters:

obj - the object to test against (null permitted).

Returns:

A boolean.

hashCode

public int hashCode()

Returns a hash code for this instance.

Overrides:

hashCode in class java.lang.Object

Returns:

A hash code.

clone

public java.lang.Object clone()
                       throws java.lang.CloneNotSupportedException

Returns a clone of the entity.

Specified by:

clone in interface org.jfree.util.PublicCloneable

Overrides:

clone in class java.lang.Object

Returns:

A clone.

Throws:

java.lang.CloneNotSupportedException - if there is a problem cloning the entity.

writeObject

private void writeObject(java.io.ObjectOutputStream stream)
                  throws java.io.IOException

Provides serialization support.

Parameters:

stream - the output stream.

Throws:

java.io.IOException - if there is an I/O error.

readObject

private void readObject(java.io.ObjectInputStream stream)
                 throws java.io.IOException,
                        java.lang.ClassNotFoundException

Provides serialization support.

Parameters:

stream - the input stream.

Throws:

java.io.IOException - if there is an I/O error.

java.lang.ClassNotFoundException - if there is a classpath problem.