/*****************************************************************************
* Copyright (C) The Apache Software Foundation. All rights reserved. *
* ------------------------------------------------------------------------- *
* This software is published under the terms of the Apache Software License *
* version 1.1, a copy of which has been included with this distribution in *
* the LICENSE file. *
*****************************************************************************/
package org.apache.batik.css.engine.value.css2;
import org.apache.batik.css.engine.CSSContext;
import org.apache.batik.css.engine.CSSEngine;
import org.apache.batik.css.engine.CSSStylableElement;
import org.apache.batik.css.engine.StyleMap;
import org.apache.batik.css.engine.value.AbstractValueManager;
import org.apache.batik.css.engine.value.ListValue;
import org.apache.batik.css.engine.value.StringMap;
import org.apache.batik.css.engine.value.StringValue;
import org.apache.batik.css.engine.value.Value;
import org.apache.batik.css.engine.value.ValueConstants;
import org.apache.batik.util.CSSConstants;
import org.w3c.css.sac.LexicalUnit;
import org.w3c.dom.DOMException;
import org.w3c.dom.css.CSSPrimitiveValue;
/**
* This class provides a factory for the 'font-family' property values.
*
* @author <a href="mailto:stephane@hillion.org">Stephane Hillion</a>
* @version $Id: FontFamilyManager.java,v 1.3 2003/04/11 13:55:38 vhardy Exp $
*/
public class FontFamilyManager extends AbstractValueManager {
/**
* The default value.
*/
protected final static ListValue DEFAULT_VALUE = new ListValue();
static {
DEFAULT_VALUE.append
(new StringValue(CSSPrimitiveValue.CSS_STRING,
"Arial"));
DEFAULT_VALUE.append
(new StringValue(CSSPrimitiveValue.CSS_STRING,
"Helvetica"));
DEFAULT_VALUE.append
(new StringValue(CSSPrimitiveValue.CSS_IDENT,
CSSConstants.CSS_SANS_SERIF_VALUE));
}
/**
* The identifier values.
*/
protected final static StringMap values = new StringMap();
static {
values.put(CSSConstants.CSS_CURSIVE_VALUE,
ValueConstants.CURSIVE_VALUE);
values.put(CSSConstants.CSS_FANTASY_VALUE,
ValueConstants.FANTASY_VALUE);
values.put(CSSConstants.CSS_MONOSPACE_VALUE,
ValueConstants.MONOSPACE_VALUE);
values.put(CSSConstants.CSS_SERIF_VALUE,
ValueConstants.SERIF_VALUE);
values.put(CSSConstants.CSS_SANS_SERIF_VALUE,
ValueConstants.SANS_SERIF_VALUE);
}
/**
* Implements {@link ValueManager#isInheritedProperty()}.
*/
public boolean isInheritedProperty() {
return true;
}
/**
* Implements {@link ValueManager#getPropertyName()}.
*/
public String getPropertyName() {
return CSSConstants.CSS_FONT_FAMILY_PROPERTY;
}
/**
* Implements {@link ValueManager#getDefaultValue()}.
*/
public Value getDefaultValue() {
return DEFAULT_VALUE;
}
/**
* Implements {@link ValueManager#createValue(LexicalUnit,CSSEngine)}.
*/
public Value createValue(LexicalUnit lu, CSSEngine engine)
throws DOMException {
switch (lu.getLexicalUnitType()) {
case LexicalUnit.SAC_INHERIT:
return ValueConstants.INHERIT_VALUE;
default:
throw createInvalidLexicalUnitDOMException
(lu.getLexicalUnitType());
case LexicalUnit.SAC_IDENT:
case LexicalUnit.SAC_STRING_VALUE:
}
ListValue result = new ListValue();
for (;;) {
switch (lu.getLexicalUnitType()) {
case LexicalUnit.SAC_STRING_VALUE:
result.append(new StringValue(CSSPrimitiveValue.CSS_STRING,
lu.getStringValue()));
lu = lu.getNextLexicalUnit();
break;
case LexicalUnit.SAC_IDENT:
StringBuffer sb = new StringBuffer(lu.getStringValue());
lu = lu.getNextLexicalUnit();
if (lu != null &&
lu.getLexicalUnitType() == LexicalUnit.SAC_IDENT) {
do {
sb.append(' ');
sb.append(lu.getStringValue());
lu = lu.getNextLexicalUnit();
} while (lu != null &&
lu.getLexicalUnitType() == LexicalUnit.SAC_IDENT);
result.append(new StringValue(CSSPrimitiveValue.CSS_STRING,
sb.toString()));
} else {
String id = sb.toString();
String s = id.toLowerCase().intern();
Value v = (Value)values.get(s);
result.append((v != null)
? v
: new StringValue
(CSSPrimitiveValue.CSS_STRING, id));
}
}
if (lu == null) {
return result;
}
if (lu.getLexicalUnitType() != LexicalUnit.SAC_OPERATOR_COMMA) {
throw createInvalidLexicalUnitDOMException
(lu.getLexicalUnitType());
}
lu = lu.getNextLexicalUnit();
if (lu == null) {
throw createMalformedLexicalUnitDOMException();
}
}
}
/**
* Implements {@link
* ValueManager#computeValue(CSSStylableElement,String,CSSEngine,int,StyleMap,Value)}.
*/
public Value computeValue(CSSStylableElement elt,
String pseudo,
CSSEngine engine,
int idx,
StyleMap sm,
Value value) {
if (value == DEFAULT_VALUE) {
CSSContext ctx = engine.getCSSContext();
value = ctx.getDefaultFontFamily();
}
return value;
}
}