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/*
* Copyright 1999-2005 The Apache Software Foundation.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
/* $Id$ */
package org.apache.fop.fo.pagination;
// Java
import java.util.Iterator;
import java.util.Map;
import org.xml.sax.Locator;
import org.apache.fop.apps.FOPException;
import org.apache.fop.fo.FONode;
import org.apache.fop.fo.FObj;
import org.apache.fop.fo.PropertyList;
import org.apache.fop.fo.ValidationException;
/**
* The layout-master-set formatting object.
* This class maintains the set of simple page master and
* page sequence masters.
* The masters are stored so that the page sequence can obtain
* the required page master to create a page.
* The page sequence masters can be reset as they hold state
* information for a page sequence.
*/
public class LayoutMasterSet extends FObj {
private Map simplePageMasters;
private Map pageSequenceMasters;
/**
* @see org.apache.fop.fo.FONode#FONode(FONode)
*/
public LayoutMasterSet(FONode parent) {
super(parent);
}
/**
* @see org.apache.fop.fo.FObj#bind(PropertyList)
*/
public void bind(PropertyList pList) throws FOPException {
// No properties in layout-master-set.
}
/**
* @see org.apache.fop.fo.FONode#startOfNode
*/
protected void startOfNode() throws FOPException {
getRoot().setLayoutMasterSet(this);
simplePageMasters = new java.util.HashMap();
pageSequenceMasters = new java.util.HashMap();
}
/**
* @see org.apache.fop.fo.FONode#endOfNode
*/
protected void endOfNode() throws FOPException {
if (childNodes == null) {
missingChildElementError("(simple-page-master|page-sequence-master)+");
}
checkRegionNames();
}
/**
* @see org.apache.fop.fo.FONode#validateChildNode(Locator, String, String)
XSL/FOP: (simple-page-master|page-sequence-master)+
*/
protected void validateChildNode(Locator loc, String nsURI, String localName)
throws ValidationException {
if (FO_URI.equals(nsURI)) {
if (!localName.equals("simple-page-master")
&& !localName.equals("page-sequence-master")) {
invalidChildError(loc, nsURI, localName);
}
} else {
invalidChildError(loc, nsURI, localName);
}
}
/**
* Section 7.25.7: check to see that if a region-name is a
* duplicate, that it maps to the same fo region-class.
* @throws ValidationException if there's a name duplication
*/
private void checkRegionNames() throws ValidationException {
// (user-entered) region-name to default region map.
Map allRegions = new java.util.HashMap();
for (Iterator spm = simplePageMasters.values().iterator();
spm.hasNext();) {
SimplePageMaster simplePageMaster =
(SimplePageMaster)spm.next();
Map spmRegions = simplePageMaster.getRegions();
for (Iterator e = spmRegions.values().iterator();
e.hasNext();) {
Region region = (Region) e.next();
if (allRegions.containsKey(region.getRegionName())) {
String defaultRegionName =
(String) allRegions.get(region.getRegionName());
if (!defaultRegionName.equals(region.getDefaultRegionName())) {
throw new ValidationException("Region-name ("
+ region.getRegionName()
+ ") is being mapped to multiple "
+ "region-classes ("
+ defaultRegionName + " and "
+ region.getDefaultRegionName()
+ ")", locator);
}
}
allRegions.put(region.getRegionName(),
region.getDefaultRegionName());
}
}
}
/**
* Add a simple page master.
* The name is checked to throw an error if already added.
* @param sPM simple-page-master to add
* @throws ValidationException if there's a problem with name uniqueness
*/
protected void addSimplePageMaster(SimplePageMaster sPM)
throws ValidationException {
// check for duplication of master-name
String masterName = sPM.getMasterName();
if (existsName(masterName)) {
throw new ValidationException("'master-name' ("
+ masterName
+ ") must be unique "
+ "across page-masters and page-sequence-masters", sPM.locator);
}
this.simplePageMasters.put(masterName, sPM);
}
private boolean existsName(String masterName) {
if (simplePageMasters.containsKey(masterName)
|| pageSequenceMasters.containsKey(masterName)) {
return true;
} else {
return false;
}
}
/**
* Get a simple page master by name.
* This is used by the page sequence to get a page master for
* creating pages.
* @param masterName the name of the page master
* @return the requested simple-page-master
*/
public SimplePageMaster getSimplePageMaster(String masterName) {
return (SimplePageMaster)this.simplePageMasters.get(masterName);
}
/**
* Add a page sequence master.
* The name is checked to throw an error if already added.
* @param masterName name for the master
* @param pSM PageSequenceMaster instance
* @throws ValidationException if there's a problem with name uniqueness
*/
protected void addPageSequenceMaster(String masterName,
PageSequenceMaster pSM)
throws ValidationException {
// check against duplication of master-name
if (existsName(masterName)) {
throw new ValidationException("'master-name' ("
+ masterName
+ ") must be unique "
+ "across page-masters and page-sequence-masters", pSM.locator);
}
this.pageSequenceMasters.put(masterName, pSM);
}
/**
* Get a page sequence master by name.
* This is used by the page sequence to get a page master for
* creating pages.
* @param masterName name of the master
* @return the requested PageSequenceMaster instance
*/
public PageSequenceMaster getPageSequenceMaster(String masterName) {
return (PageSequenceMaster)this.pageSequenceMasters.get(masterName);
}
/**
* Checks whether or not a region name exists in this master set.
* @param regionName name of the region
* @return true when the region name specified has a region in this LayoutMasterSet
*/
public boolean regionNameExists(String regionName) {
for (Iterator e = simplePageMasters.values().iterator();
e.hasNext();) {
if (((SimplePageMaster)e.next()).regionNameExists(regionName)) {
return true;
}
}
return false;
}
/** @see org.apache.fop.fo.FONode#getLocalName() */
public String getLocalName() {
return "layout-master-set";
}
/**
* @see org.apache.fop.fo.FObj#getNameId()
*/
public int getNameId() {
return FO_LAYOUT_MASTER_SET;
}
}
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