com.itextpdf.layout.property

Class ParagraphWidowsControl

java.lang.Object

com.itextpdf.layout.property.ParagraphWidowsControl

public class ParagraphWidowsControl
extends Object

A specialized class holding configurable parameters related to Paragraph's widows restrictions. This class is meant to be used as the value for the Property.WIDOWS_CONTROL key.

Constructor Summary

Constructors

Constructor and Description
ParagraphWidowsControl(int minWidows, int maxLinesToMove, boolean overflowParagraphOnViolation) Creates a ParagraphWidowsControl instance with specified widows restrictions.

Method Summary

Modifier and Type	Method and Description
int	getMaxLinesToMove() Gets a number of lines that are allowed to be moved to the next area in order to fix widows constraint violation.
int	getMinWidows() Gets minimal number of paragraph's lines to be overflowed to the next area.
void	handleViolatedWidows(ParagraphRenderer widowsRenderer, String message) Writes a log message reporting that widows constraint is violated and cannot be automatically fixed.
boolean	isOverflowOnWidowsViolation() Indicates whether paragraph should be completely pushed to the next area if widows constraint is violated and cannot be automatically fixed.
ParagraphWidowsControl	setMinAllowedWidows(int minWidows, int maxLinesToMove, boolean overflowParagraphOnViolation) Sets parameters that define widows restrictions and conditions of handling cases of widows constraint violation.

Methods inherited from class java.lang.Object

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

Constructor Detail

ParagraphWidowsControl

public ParagraphWidowsControl(int minWidows,
                              int maxLinesToMove,
                              boolean overflowParagraphOnViolation)

Creates a ParagraphWidowsControl instance with specified widows restrictions.

Parameters:

minWidows - minimal number of paragraph's lines to be overflowed to the next area.

maxLinesToMove - a number of lines that are allowed to be moved to the next area in order to fix widows constraint violation.

overflowParagraphOnViolation - defines whether the entire paragraph should be pushed to the next area if widows constraint is violated and cannot be automatically fixed.

Method Detail

setMinAllowedWidows

public ParagraphWidowsControl setMinAllowedWidows(int minWidows,
                                                  int maxLinesToMove,
                                                  boolean overflowParagraphOnViolation)

Sets parameters that define widows restrictions and conditions of handling cases of widows constraint violation.

Parameters:

minWidows - minimal number of paragraph's lines to be overflowed to the next area.

maxLinesToMove - a number of lines that are allowed to be moved to the next area in order to fix widows constraint violation.

overflowParagraphOnViolation - defines whether paragraph should be completely pushed to the next area if widows constraint is violated and cannot be automatically fixed.

Returns:

this ParagraphWidowsControl instance.

getMinWidows

public int getMinWidows()

Gets minimal number of paragraph's lines to be overflowed to the next area.

Returns:

minimal number of paragraph's lines to be overflowed to the next area

getMaxLinesToMove

public int getMaxLinesToMove()

Gets a number of lines that are allowed to be moved to the next area in order to fix widows constraint violation.

Returns:

a number of lines that are allowed to be moved to the next are

isOverflowOnWidowsViolation

public boolean isOverflowOnWidowsViolation()

Indicates whether paragraph should be completely pushed to the next area if widows constraint is violated and cannot be automatically fixed.

Returns:

true if paragraph should be completely pushed to the next area if widows constraint is violated and cannot be automatically fixed, otherwise - false

handleViolatedWidows

public void handleViolatedWidows(ParagraphRenderer widowsRenderer,
                                 String message)

Writes a log message reporting that widows constraint is violated and cannot be automatically fixed. This method is to be overridden if violation scenarios need to be handled in some other way.

Parameters:

widowsRenderer - a renderer processing widows

message - String explaining the reason for violation