org.w3c.css.properties.aural.ACssVoiceDuration Maven / Gradle / Ivy
//
// $Id: ACssVoiceDuration.java,v 1.4 2010-01-05 13:49:36 ylafon Exp $
// From Philippe Le Hegaret ([email protected])
//
// (c) COPYRIGHT MIT and INRIA, 1997.
// Please first read the full copyright statement in file COPYRIGHT.html
package org.w3c.css.properties.aural;
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.CssTime;
import org.w3c.css.values.CssValue;
/**
* 'pause-before'
*
*
* Value: <time> | <percentage>
* Initial: UA specific
* Applies to: all elements
* Inherited: no
* Percentage values: NA
*
*
This property specifies the pause before an element is spoken. It
* may be given in an absolute units (seconds, milliseconds) or as a
* relative value - in which case it is relative to the reciprocal of the
* 'speed' property: if speed is 120 words per minute (ie a word takes
* half a second, 500 milliseconds) then a pause-before of 100% means a
* pause of 500 ms and a pause-before of 20% means 100ms.
*
*
Using relative units gives more robust stylesheets in the face of
* large changes in speed and is recommended practice.
*
* @version $Revision: 1.4 $
*/
public class ACssVoiceDuration extends ACssProperty {
CssValue value;
private static CssTime defaultValue;
/**
* Create a new ACssVoiceDuration
*/
public ACssVoiceDuration() {
// Initial is User Agent Specific
if (defaultValue == null) {
defaultValue = new CssTime(ACssProperties.getValue(this, "default"));
}
value = defaultValue;
}
/**
* Creates a new ACssVoiceDuration
*
* @param expression the expression of the size
* @exception InvalidParamException The expression is incorrect
*/
public ACssVoiceDuration(ApplContext ac, CssExpression expression,
boolean check) throws InvalidParamException {
if(check && expression.getCount() > 1) {
throw new InvalidParamException("unrecognize", ac);
}
CssValue val = expression.getValue();
setByUser();
if (val.equals(inherit)) {
value = inherit;
expression.next();
return;
} else if (val instanceof CssTime) {
float num = ((Float) val.get()).floatValue();
if (num < 0) {
throw new InvalidParamException("negative-value",
val.toString(), ac);
}
value = val;
expression.next();
return;
}
throw new InvalidParamException("value", val.toString(),
getPropertyName(), ac);
}
public ACssVoiceDuration(ApplContext ac, CssExpression expression)
throws InvalidParamException {
this(ac, expression, false);
}
/**
* Returns the current value
*/
public Object get() {
return value;
}
/**
* Returns some usable value of this property...
*/
public int getValue() { // vm
return ((Float) value.get()).intValue();
}
/**
* Returns true if this property is "softly" inherited
* e.g. his value is equals to inherit
*/
public boolean isSoftlyInherited() {
return value == inherit;
}
/**
* Returns a string representation of the object.
*/
public String toString() {
if (value != null)
return value.toString();
else
return null;
}
/**
* Returns the name of this property
*/
public String getPropertyName() {
return "voice-duration";
}
/**
* Add this property to the CssStyle.
*
* @param style The CssStyle
*/
public void addToStyle(ApplContext ac, CssStyle style) {
if (((ACssStyle) style).acssVoiceDuration != null)
style.addRedefinitionWarning(ac, this);
((ACssStyle) style).acssVoiceDuration = this;
}
/**
* Compares two properties for equality.
*
* @param value The other property.
*/
public boolean equals(CssProperty property) {
if (value != null) {
return (property instanceof ACssVoiceDuration &&
value.equals(((ACssVoiceDuration) property).value));
} else {
return false;
}
}
/**
* 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 ((ACssStyle) style).getVoiceDuration();
} else {
return ((ACssStyle) style).acssVoiceDuration;
}
}
}