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/*
* Copyright 1999-2004 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.HashMap;
import java.util.Iterator;
import java.util.Map;
// XML
import org.xml.sax.Attributes;
import org.xml.sax.SAXParseException;
// FOP
import org.apache.fop.fo.FONode;
import org.apache.fop.fo.FObj;
import org.apache.fop.layoutmgr.AddLMVisitor;
/**
* A simple-page-master formatting object.
* This creates a simple page from the specified regions
* and attributes.
*/
public class SimplePageMaster extends FObj {
/**
* Page regions (regionClass, Region)
*/
private Map regions;
private String masterName;
/**
* @see org.apache.fop.fo.FONode#FONode(FONode)
*/
public SimplePageMaster(FONode parent) {
super(parent);
}
/**
* @see org.apache.fop.fo.FObj#addProperties
*/
protected void addProperties(Attributes attlist) throws SAXParseException {
super.addProperties(attlist);
if (parent.getName().equals("fo:layout-master-set")) {
LayoutMasterSet layoutMasterSet = (LayoutMasterSet)parent;
masterName = this.propertyList.get(PR_MASTER_NAME).getString();
if (masterName == null) {
getLogger().warn("simple-page-master does not have "
+ "a master-name and so is being ignored");
} else {
try {
layoutMasterSet.addSimplePageMaster(this);
} catch (Exception e) {
throw new SAXParseException("Error with adding Page Sequence Master: "
+ e.getMessage(), locator);
}
}
} else {
throw new SAXParseException("fo:simple-page-master must be child "
+ "of fo:layout-master-set, not "
+ parent.getName(), locator);
}
//Well, there are only 5 regions so we can save a bit of memory here
regions = new HashMap(5);
}
/**
* @see org.apache.fop.fo.FObj#generatesReferenceAreas()
*/
public boolean generatesReferenceAreas() {
return true;
}
/**
* Returns the name of the simple-page-master.
* @return the page master name
*/
public String getMasterName() {
return masterName;
}
/**
* @see org.apache.fop.fo.FONode#addChildNode(FONode)
*/
protected void addChildNode(FONode child) {
if (child instanceof Region) {
addRegion((Region)child);
} else {
getLogger().error("SimplePageMaster cannot have child of type "
+ child.getName());
}
}
/**
* Adds a region to this simple-page-master.
* @param region region to add
*/
protected void addRegion(Region region) {
String key = String.valueOf(region.getRegionClassCode());
if (regions.containsKey(key)) {
getLogger().error("Only one region of class " + region.getRegionName()
+ " allowed within a simple-page-master. The duplicate"
+ " region (" + region.getName() + ") is ignored.");
} else {
regions.put(key, region);
}
}
/**
* Returns the region for a given region class.
* @param regionClass region class to lookup
* @return the region, null if it doesn't exist
*/
public Region getRegion(int regionId) {
return (Region) regions.get(String.valueOf(regionId));
}
/**
* Returns a Map of regions associated with this simple-page-master
* @return the regions
*/
public Map getRegions() {
return regions;
}
/**
* Indicates if a region with a given name exists in this
* simple-page-master.
* @param regionName name of the region to lookup
* @return True if a region with this name exists
*/
protected boolean regionNameExists(String regionName) {
for (Iterator regenum = regions.values().iterator();
regenum.hasNext();) {
Region r = (Region)regenum.next();
if (r.getRegionName().equals(regionName)) {
return true;
}
}
return false;
}
/**
* This is a hook for the AddLMVisitor class to be able to access
* this object.
* @param aLMV the AddLMVisitor object that can access this object.
*/
public void acceptVisitor(AddLMVisitor aLMV) {
aLMV.serveSimplePageMaster(this);
}
public String getName() {
return "fo:simple-page-master";
}
}
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