com.itextpdf.layout.renderer

Class AreaBreakRenderer

java.lang.Object

com.itextpdf.layout.renderer.AreaBreakRenderer

All Implemented Interfaces:

IPropertyContainer, IRenderer

public class AreaBreakRenderer
extends Object
implements IRenderer

Renderer for the AreaBreak layout element. Will terminate the current content area and initialize a new one.

Field Summary

Fields

Modifier and Type	Field and Description
protected AreaBreak	areaBreak

Constructor Summary

Constructors

Constructor and Description
AreaBreakRenderer(AreaBreak areaBreak) Creates an AreaBreakRenderer.

Method Summary

Modifier and Type	Method and Description
void	addChild(IRenderer renderer) Throws an UnsupportedOperationException because instances of this class are only used for terminating the current content area.
void	deleteOwnProperty(int property) Deletes the own property of this entity.
void	draw(DrawContext drawContext) Throws an UnsupportedOperationException because instances of this class are only used for terminating the current content area.
List<IRenderer>	getChildRenderers() Gets the child IRenderers.
T1	getDefaultProperty(int property) Gets the default property from this entity.
IPropertyContainer	getModelElement() Gets the model element associated with this renderer.
IRenderer	getNextRenderer() Gets a new instance of this class to be used as a next renderer, after this renderer is used, if IRenderer.layout(LayoutContext) is called more than once.
LayoutArea	getOccupiedArea() Throws an UnsupportedOperationException because instances of this class are only used for terminating the current content area.
T1	getOwnProperty(int property) Gets own property from this entity.
IRenderer	getParent() Gets the parent IRenderer.
T1	getProperty(int key) Gets the property from this entity.
T1	getProperty(int property, T1 defaultValue) Throws an UnsupportedOperationException because instances of this class are only used for terminating the current content area.
boolean	hasOwnProperty(int property) Checks if this entity has the specified property, i.e.
boolean	hasProperty(int property) Checks if this entity has the specified property.
boolean	isFlushed() Indicates whether this renderer is flushed or not, i.e.
LayoutResult	layout(LayoutContext layoutContext) This method simulates positioning of the renderer, including all of its children, and returns the LayoutResult, representing the layout result, including occupied area, status, i.e.
void	move(float dx, float dy) Throws an UnsupportedOperationException because instances of this class are only used for terminating the current content area.
IRenderer	setParent(IRenderer parent) Explicitly sets this object as the child of another IRenderer in the renderer hierarchy.
void	setProperty(int property, Object value) Throws an UnsupportedOperationException because instances of this class are only used for terminating the current content area.

Methods inherited from class java.lang.Object

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

Field Detail

areaBreak

protected AreaBreak areaBreak

Constructor Detail

AreaBreakRenderer

public AreaBreakRenderer(AreaBreak areaBreak)

Creates an AreaBreakRenderer.

Parameters:

areaBreak - the AreaBreak that will be rendered by this object

Method Detail

addChild

public void addChild(IRenderer renderer)

Throws an UnsupportedOperationException because instances of this class are only used for terminating the current content area.

Specified by:

addChild in interface IRenderer

Parameters:

renderer - a child to be added

layout

public LayoutResult layout(LayoutContext layoutContext)

Description copied from interface: IRenderer

This method simulates positioning of the renderer, including all of its children, and returns the LayoutResult, representing the layout result, including occupied area, status, i.e. if there was enough place to fit the renderer subtree, etc. LayoutResult can be extended to return custom layout results for custom elements, e.g. TextRenderer uses TextLayoutResult as its result. This method can be called standalone to learn how much area the renderer subtree needs, or can be called before IRenderer.draw(DrawContext), to prepare the renderer to be flushed to the output stream.

Specified by:

layout in interface IRenderer

Parameters:

layoutContext - the description of layout area and any other additional information

Returns:

result of the layout process

draw

public void draw(DrawContext drawContext)

Throws an UnsupportedOperationException because instances of this class are only used for terminating the current content area.

Specified by:

draw in interface IRenderer

Parameters:

drawContext - contains the PdfDocument to which the renderer subtree if flushed, the PdfCanvas on which the renderer subtree is drawn and other additional parameters needed to perform drawing

getOccupiedArea

public LayoutArea getOccupiedArea()

Throws an UnsupportedOperationException because instances of this class are only used for terminating the current content area.

Specified by:

getOccupiedArea in interface IRenderer

Returns:

LayoutArea instance

hasProperty

public boolean hasProperty(int property)

Description copied from interface: IPropertyContainer

Checks if this entity has the specified property. Compared to IPropertyContainer.hasOwnProperty(int), this method can check parent's properties, styles, etc, depending on the origin of the instance

Specified by:

hasProperty in interface IPropertyContainer

Parameters:

property - the property to be checked

Returns:

true if this instance has given property, false otherwise

hasOwnProperty

public boolean hasOwnProperty(int property)

Description copied from interface: IPropertyContainer

Checks if this entity has the specified property, i.e. if it was set to this very element earlier

Specified by:

hasOwnProperty in interface IPropertyContainer

Parameters:

property - the property to be checked

Returns:

true if this instance has given own property, false otherwise

getProperty

public  T1 getProperty(int key)

Description copied from interface: IPropertyContainer

Gets the property from this entity. Compared to IPropertyContainer.getOwnProperty(int), this method can check parent's properties, styles, etc, depending on the origin of the instance

Specified by:

getProperty in interface IPropertyContainer

Type Parameters:

T1 - the return type associated with the property

Parameters:

key - the property to be retrieved

Returns:

the value of the given property. null will be returned if the property value was not found

getOwnProperty

public  T1 getOwnProperty(int property)

Description copied from interface: IPropertyContainer

Gets own property from this entity. The property must have been set earlier to this entity. If the property is not found, null will be returned.

Specified by:

getOwnProperty in interface IPropertyContainer

Type Parameters:

T1 - the return type associated with the property

Parameters:

property - the property to be retrieved

Returns:

the value of the given own property. null will be returned if the property value was not found

getDefaultProperty

public  T1 getDefaultProperty(int property)

Description copied from interface: IPropertyContainer

Gets the default property from this entity.

Specified by:

getDefaultProperty in interface IPropertyContainer

Type Parameters:

T1 - the return type associated with the property

Parameters:

property - the property to be retrieved

Returns:

the default property value. If the default property is not defined, null will be returned

getProperty

public  T1 getProperty(int property,
                           T1 defaultValue)

Throws an UnsupportedOperationException because instances of this class are only used for terminating the current content area.

Specified by:

getProperty in interface IRenderer

Type Parameters:

T1 - the return type associated with the property

Parameters:

property - the property to be retrieved

defaultValue - a fallback value

Returns:

the value of the given property

setProperty

public void setProperty(int property,
                        Object value)

Throws an UnsupportedOperationException because instances of this class are only used for terminating the current content area.

Specified by:

setProperty in interface IPropertyContainer

Parameters:

property - the property to be set

value - the value of the property

deleteOwnProperty

public void deleteOwnProperty(int property)

Description copied from interface: IPropertyContainer

Deletes the own property of this entity.

Specified by:

deleteOwnProperty in interface IPropertyContainer

Parameters:

property - the property to be deleted

setParent

public IRenderer setParent(IRenderer parent)

Description copied from interface: IRenderer

Explicitly sets this object as the child of another IRenderer in the renderer hierarchy. Some implementations also use this method internally to create a consistent hierarchy tree.

Specified by:

setParent in interface IRenderer

Parameters:

parent - the object to place higher in the renderer hierarchy

Returns:

by default, this object

getModelElement

public IPropertyContainer getModelElement()

Description copied from interface: IRenderer

Gets the model element associated with this renderer.

Specified by:

getModelElement in interface IRenderer

Returns:

the model element, as a container of properties

getParent

public IRenderer getParent()

Description copied from interface: IRenderer

Gets the parent IRenderer.

Specified by:

getParent in interface IRenderer

Returns:

direct parent renderer of this instance

getChildRenderers

public List<IRenderer> getChildRenderers()

Description copied from interface: IRenderer

Gets the child IRenderers.

Specified by:

getChildRenderers in interface IRenderer

Returns:

a list of direct child renderers of this instance

isFlushed

public boolean isFlushed()

Description copied from interface: IRenderer

Indicates whether this renderer is flushed or not, i.e. if IRenderer.draw(DrawContext) has already been called.

Specified by:

isFlushed in interface IRenderer

Returns:

whether the renderer has been flushed

move

public void move(float dx,
                 float dy)

Throws an UnsupportedOperationException because instances of this class are only used for terminating the current content area.

Specified by:

move in interface IRenderer

Parameters:

dx - the x-axis offset in points. Positive value will move the renderer subtree to the right.

dy - the y-axis offset in points. Positive value will move the renderer subtree to the top.

getNextRenderer

public IRenderer getNextRenderer()

Description copied from interface: IRenderer

Gets a new instance of this class to be used as a next renderer, after this renderer is used, if IRenderer.layout(LayoutContext) is called more than once.

Specified by:

getNextRenderer in interface IRenderer

Returns:

new renderer instance