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/*
* $Id$
* Copyright (C) 2001 The Apache Software Foundation. All rights reserved.
* For details on use and redistribution please refer to the
* LICENSE file included with these sources.
*/
package org.apache.fop.fo;
import org.apache.fop.fo.properties.*;
import org.apache.fop.svg.*;
import org.apache.fop.datatypes.*;
import org.apache.fop.apps.FOPException;
import org.xml.sax.Attributes;
import java.util.HashMap;
public class PropertyListBuilder {
/**
* Name of font-size property attribute to set first.
*/
private static final String FONTSIZEATTR = "font-size";
private HashMap propertyListTable;
private HashMap elementTable;
public PropertyListBuilder() {
this.propertyListTable = new HashMap();
this.elementTable = new HashMap();
}
public void addList(HashMap list) {
propertyListTable.putAll(list);
}
public void addElementList(String element, HashMap list) {
elementTable.put(element, list);
}
public Property computeProperty(PropertyList propertyList, String space,
String element, String propertyName) {
Property p = null;
Property.Maker propertyMaker = findMaker(space, element,
propertyName);
if (propertyMaker != null) {
try {
p = propertyMaker.compute(propertyList);
} catch (FOPException e) {
//log.error("exception occurred while computing"
// + " value of property '"
// + propertyName + "': "
// + e.getMessage());
}
} else {
//log.error("property " + propertyName
// + " ignored");
}
return p;
}
public boolean isInherited(String space, String element,
String propertyName) {
boolean b;
Property.Maker propertyMaker = findMaker(space, element,
propertyName);
if (propertyMaker != null) {
b = propertyMaker.isInherited();
} else {
// log.error("Unknown property " + propertyName);
b = true;
}
return b;
}
public PropertyList makeList(String ns, String elementName, Attributes attributes,
PropertyList parentPropertyList,
FObj parentFO) throws FOPException {
String space = "http://www.w3.org/TR/1999/XSL/Format";
if (ns != null) {
space = ns;
}
PropertyList par = null;
if (parentPropertyList != null
&& space.equals(parentPropertyList.getNameSpace())) {
par = parentPropertyList;
}
PropertyList p = new PropertyList(par, space,
elementName);
p.setBuilder(this);
HashMap table;
table = (HashMap)elementTable.get(elementName);
/* Store names of properties already set. */
StringBuffer propsDone = new StringBuffer(256);
propsDone.append(' ');
/*
* If font-size is set on this FO, must set it first, since
* other attributes specified in terms of "ems" depend on it.
* When we do "shorthand" properties, must handle the "font"
* property as well to see if font-size is set.
*/
String fontsizeval = attributes.getValue(FONTSIZEATTR);
if (fontsizeval != null) {
Property.Maker propertyMaker = findMaker(table, FONTSIZEATTR);
if (propertyMaker != null) {
try {
p.put(FONTSIZEATTR,
propertyMaker.make(p, fontsizeval, parentFO));
} catch (FOPException e) {}
}
// Put in the "done" list even if error or no Maker.
propsDone.append(FONTSIZEATTR + ' ');
}
for (int i = 0; i < attributes.getLength(); i++) {
String attributeName = attributes.getQName(i);
/* Handle "compound" properties, ex. space-before.minimum */
int sepchar = attributeName.indexOf('.');
String propName = attributeName;
String subpropName = null;
Property propVal = null;
if (sepchar > -1) {
propName = attributeName.substring(0, sepchar);
subpropName = attributeName.substring(sepchar + 1);
} else if (propsDone.toString().indexOf(' ' + propName + ' ')
!= -1) {
// Already processed this property (base property
// for a property with sub-components or font-size)
continue;
}
Property.Maker propertyMaker = findMaker(table, propName);
if (propertyMaker != null) {
try {
if (subpropName != null) {
Property baseProp = p.getExplicitBaseProp(propName);
if (baseProp == null) {
// See if it is specified later in this list
String baseValue = attributes.getValue(propName);
if (baseValue != null) {
baseProp = propertyMaker.make(p, baseValue,
parentFO);
propsDone.append(propName + ' ');
}
// else baseProp = propertyMaker.makeCompound(p, parentFO);
}
propVal = propertyMaker.make(baseProp, subpropName,
p,
attributes.getValue(i),
parentFO);
} else {
propVal = propertyMaker.make(p,
attributes.getValue(i),
parentFO);
}
if (propVal != null) {
p.put(propName, propVal);
}
} catch (FOPException e) { /* Do other props. */
//log.error(e.getMessage());
}
} else {
if (!attributeName.startsWith("xmlns")) {
//log.error("property '"
// + attributeName + "' ignored");
}
}
}
return p;
}
public Property getSubpropValue(String space, String element,
String propertyName, Property p,
String subpropName) {
Property.Maker maker = findMaker(space, element, propertyName);
if (maker != null) {
return maker.getSubpropValue(p, subpropName);
} else
return null;
}
public boolean isCorrespondingForced(PropertyList propertyList,
String space, String element,
String propertyName) {
Property.Maker propertyMaker = findMaker(space, element,
propertyName);
if (propertyMaker != null) {
return propertyMaker.isCorrespondingForced(propertyList);
} else {
//log.error("no Maker for " + propertyName);
}
return false;
}
public Property getShorthand(PropertyList propertyList, String space,
String element, String propertyName) {
Property.Maker propertyMaker = findMaker(space, element,
propertyName);
if (propertyMaker != null) {
return propertyMaker.getShorthand(propertyList);
} else {
//log.error("no Maker for " + propertyName);
return null;
}
}
public Property makeProperty(PropertyList propertyList, String space,
String element,
String propertyName) throws FOPException {
Property p = null;
Property.Maker propertyMaker = findMaker(space, element,
propertyName);
if (propertyMaker != null) {
p = propertyMaker.make(propertyList);
} else {
//log.error("property " + propertyName
// + " ignored");
}
return p;
}
protected Property.Maker findMaker(String space, String elementName,
String propertyName) {
return findMaker((HashMap)elementTable.get(elementName),
propertyName);
}
/**
* Convenience function to return the Maker for a given property
* given the HashMap containing properties specific to this element.
* If table is non-null and
* @param elemTable Element-specific properties or null if none.
* @param propertyName Name of property.
* @return A Maker for this property.
*/
private Property.Maker findMaker(HashMap elemTable,
String propertyName) {
Property.Maker propertyMaker = null;
if (elemTable != null) {
propertyMaker = (Property.Maker)elemTable.get(propertyName);
}
if (propertyMaker == null) {
propertyMaker =
(Property.Maker)propertyListTable.get(propertyName);
}
return propertyMaker;
}
}
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