org.w3c.css.properties.css3.CssTextKashidaSpace Maven / Gradle / Ivy
//
// $Id: CssTextKashidaSpace.java,v 1.3 2010-01-05 13:49:55 ylafon Exp $
// From Sijtsche de Jong ([email protected])
//
// (c) COPYRIGHT 1995-2000 World Wide Web Consortium (MIT, INRIA, Keio University)
// Please first read the full copyright statement at
// http://www.w3.org/Consortium/Legal/copyright-software-19980720
package org.w3c.css.properties.css3;
import org.w3c.css.parser.CssStyle;
import org.w3c.css.properties.css.CssProperty;
import org.w3c.css.util.ApplContext;
import org.w3c.css.util.InvalidParamException;
import org.w3c.css.values.CssExpression;
import org.w3c.css.values.CssPercentage;
import org.w3c.css.values.CssValue;
/**
*
* Value: <percentage> || inherit
* Initial:0%
* Applies to:block-level elements
* Inherited:yes
* Percentages:as described
* Media::visual
*
* Kashida is a typographic effect used in Arabic writing systems that allows
* character elongation at some carefully chosen points in Arabic. Each
* elongation can be accomplished using a number of kashida glyphs, a single
* graphic or character elongation on each side of the kashida point. (The UA
* may use either mechanism based on font or system capability). The
* text-kashida-space property expresses the ratio of the kashida expansion
* size to the white space expansion size, 0% means no kashida expansion,
* 100% means kashida expansion only . This property can be used with any
* justification style where kashida expansion is used (currently
* text-justify: auto, kashida, distribute and newspaper).
*/
public class CssTextKashidaSpace extends CssProperty {
CssValue kashspace;
/**
* Create a new CssTextKashidaSpace
*/
public CssTextKashidaSpace() {
CssPercentage perc = new CssPercentage(0);
kashspace = perc;
}
/**
* Create a new CssTextKashidaSpace
*
* @param expression The expression for this property
* @exception InvalidParamException Incorrect value
*/
public CssTextKashidaSpace(ApplContext ac, CssExpression expression,
boolean check) throws InvalidParamException {
setByUser();
CssValue val = expression.getValue();
if (val.equals(inherit)) {
kashspace = inherit;
expression.next();
}
else if (val instanceof CssPercentage) {
kashspace = val;
expression.next();
}
else {
throw new InvalidParamException("percentage", expression.getValue(),
getPropertyName(), ac);
}
}
public CssTextKashidaSpace(ApplContext ac, CssExpression expression)
throws InvalidParamException {
this(ac, expression, false);
}
/**
* Add this property to the CssStyle
*
* @param style The CssStyle
*/
public void addToStyle(ApplContext ac, CssStyle style) {
if (((Css3Style) style).cssTextKashidaSpace != null)
style.addRedefinitionWarning(ac, this);
((Css3Style) style).cssTextKashidaSpace = this;
}
/**
* Get this property in the style.
*
* @param style The style where the property is
* @param resolve if true, resolve the style to find this property
*/
public CssProperty getPropertyInStyle(CssStyle style, boolean resolve) {
if (resolve) {
return ((Css3Style) style).getTextKashidaSpace();
}
else {
return ((Css3Style) style).cssTextKashidaSpace;
}
}
/**
* Compares two properties for equality.
*
* @param value The other property.
*/
public boolean equals(CssProperty property) {
return (property instanceof CssTextKashidaSpace &&
kashspace.equals(((CssTextKashidaSpace) property).kashspace));
}
/**
* Returns the name of this property
*/
public String getPropertyName() {
return "text-kashida-space";
}
/**
* Returns the value of this property
*/
public Object get() {
return kashspace;
}
/**
* Returns true if this property is "softly" inherited
*/
public boolean isSoftlyInherited() {
return kashspace.equals(inherit);
}
/**
* Returns a string representation of the object
*/
public String toString() {
return kashspace.toString();
}
/**
* Is the value of this property a default value
* It is used by alle macro for the function print
*/
public boolean isDefault() {
CssPercentage perc = new CssPercentage(0);
return kashspace == perc;
}
}