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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.area;
// Java
import java.util.List;
// XML
import org.xml.sax.SAXException;
/**
* This class stores all the pages in the document
* for interactive agents.
* The pages are stored and can be retrieved in any order.
*/
public class StorePagesModel extends AreaTreeModel {
private List pageSequence = null;
private List currSequence;
private List offDocumentItems = new java.util.ArrayList();
/**
* Create a new store pages model
*/
public StorePagesModel() {
}
/**
* Start a new page sequence.
* This creates a new list for the pages in the new page sequence.
* @param title the title of the page sequence.
*/
public void startPageSequence(LineArea title) {
if (pageSequence == null) {
pageSequence = new java.util.ArrayList();
}
currSequence = new java.util.ArrayList();
pageSequence.add(currSequence);
}
/**
* Add a page.
* @param page the page to add to the current page sequence
*/
public void addPage(PageViewport page) {
currSequence.add(page);
}
/**
* Get the page sequence count.
* @return the number of page sequences in the document.
*/
public int getPageSequenceCount() {
return pageSequence.size();
}
/**
* Get the page count.
* @param seq the page sequence to count.
* @return returns the number of pages in a page sequence
*/
public int getPageCount(int seq) {
List sequence = (List) pageSequence.get(seq - 1);
return sequence.size();
}
/**
* Get the page for a position in the document.
* @param seq the page sequence number
* @param count the page count in the sequence
* @return the PageViewport for the particular page
*/
public PageViewport getPage(int seq, int count) {
List sequence = (List) pageSequence.get(seq - 1);
return (PageViewport) sequence.get(count);
}
/**
* @see org.apache.fop.area.AreaTreeModel#handleOffDocumentItem(OffDocumentItem)
*/
public void handleOffDocumentItem(OffDocumentItem ext) {
int seq, page;
switch(ext.getWhenToProcess()) {
case OffDocumentItem.IMMEDIATELY:
seq = pageSequence == null ? 0 : pageSequence.size();
page = currSequence == null ? 0 : currSequence.size();
break;
case OffDocumentItem.AFTER_PAGE:
break;
case OffDocumentItem.END_OF_DOC:
break;
}
offDocumentItems.add(ext);
}
/**
* Get the list of OffDocumentItems that apply at a particular
* position in the document.
* @param seq the page sequence number
* @param count the page count in the sequence
* @return the list of OffDocumentItems
*/
public List getOffDocumentItems(int seq, int count) {
return null;
}
/**
* Get the end of document OffDocumentItems for this store pages model.
* @return the list of end OffDocumentItems
*/
public List getEndOffDocumentItems() {
return offDocumentItems;
}
/**
* End document, do nothing.
*/
public void endDocument() throws SAXException {
}
}
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