org.jfree.chart.block

Class BlockContainer

java.lang.Object

org.jfree.chart.block.AbstractBlock

org.jfree.chart.block.BlockContainer

All Implemented Interfaces:

Serializable, Cloneable, Block, org.jfree.ui.Drawable, org.jfree.util.PublicCloneable

Direct Known Subclasses:

LegendItemBlockContainer

public class BlockContainer
extends AbstractBlock
implements Block, Cloneable, org.jfree.util.PublicCloneable, Serializable

A container for a collection of Block objects. The container uses an Arrangement object to handle the position of each block.

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
BlockContainer() Creates a new instance with default settings.
BlockContainer(Arrangement arrangement) Creates a new instance with the specified arrangement.

Method Summary

Modifier and Type	Method and Description
void	add(Block block) Adds a block to the container.
void	add(Block block, Object key) Adds a block to the container.
org.jfree.ui.Size2D	arrange(Graphics2D g2, RectangleConstraint constraint) Arranges the contents of the block, within the given constraints, and returns the block size.
void	clear() Clears all the blocks from the container.
Object	clone() Returns a clone of the container.
void	draw(Graphics2D g2, Rectangle2D area) Draws the container and all the blocks within it.
Object	draw(Graphics2D g2, Rectangle2D area, Object params) Draws the block within the specified area.
boolean	equals(Object obj) Tests this container for equality with an arbitrary object.
Arrangement	getArrangement() Returns the arrangement (layout) manager for the container.
List	getBlocks() Returns an unmodifiable list of the Block objects managed by this arrangement.
boolean	isEmpty() Returns true if there are no blocks in the container, and false otherwise.
void	setArrangement(Arrangement arrangement) Sets the arrangement (layout) manager.

Methods inherited from class org.jfree.chart.block.AbstractBlock

arrange, getBorder, getBounds, getContentXOffset, getContentYOffset, getFrame, getHeight, getID, getMargin, getPadding, getWidth, setBorder, setBorder, setBounds, setFrame, setHeight, setID, setMargin, setMargin, setPadding, setPadding, setWidth

Methods inherited from class java.lang.Object

getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface org.jfree.chart.block.Block

arrange, getBounds, getID, setBounds, setID

Constructor Detail

BlockContainer

public BlockContainer()

Creates a new instance with default settings.

BlockContainer

public BlockContainer(Arrangement arrangement)

Creates a new instance with the specified arrangement.

Parameters:

arrangement - the arrangement manager (null not permitted).

Method Detail

getArrangement

public Arrangement getArrangement()

Returns the arrangement (layout) manager for the container.

Returns:

The arrangement manager (never null).

setArrangement

public void setArrangement(Arrangement arrangement)

Sets the arrangement (layout) manager.

Parameters:

arrangement - the arrangement (null not permitted).

isEmpty

public boolean isEmpty()

Returns true if there are no blocks in the container, and false otherwise.

Returns:

A boolean.

getBlocks

public List getBlocks()

Returns an unmodifiable list of the Block objects managed by this arrangement.

Returns:

A list of blocks.

add

public void add(Block block)

Adds a block to the container.

Parameters:

block - the block (null permitted).

add

public void add(Block block,
                Object key)

Adds a block to the container.

Parameters:

block - the block (null permitted).

key - the key (null permitted).

clear

public void clear()

Clears all the blocks from the container.

arrange

public org.jfree.ui.Size2D arrange(Graphics2D g2,
                                   RectangleConstraint constraint)

Arranges the contents of the block, within the given constraints, and returns the block size.

Specified by:

arrange in interface Block

Overrides:

arrange in class AbstractBlock

Parameters:

g2 - the graphics device.

constraint - the constraint (null not permitted).

Returns:

The block size (in Java2D units, never null).

draw

public void draw(Graphics2D g2,
                 Rectangle2D area)

Draws the container and all the blocks within it.

Specified by:

draw in interface org.jfree.ui.Drawable

Parameters:

g2 - the graphics device.

area - the area.

draw

public Object draw(Graphics2D g2,
                   Rectangle2D area,
                   Object params)

Draws the block within the specified area.

Specified by:

draw in interface Block

Parameters:

g2 - the graphics device.

area - the area.

params - passed on to blocks within the container (null permitted).

Returns:

An instance of EntityBlockResult, or null.

equals

public boolean equals(Object obj)

Tests this container for equality with an arbitrary object.

Overrides:

equals in class AbstractBlock

Parameters:

obj - the object (null permitted).

Returns:

A boolean.

clone

public Object clone()
             throws CloneNotSupportedException

Returns a clone of the container.

Specified by:

clone in interface org.jfree.util.PublicCloneable

Overrides:

clone in class AbstractBlock

Returns:

A clone.

Throws:

CloneNotSupportedException - if there is a problem cloning.