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/*
* $Id: PdfPageEventForwarder.java 3373 2008-05-12 16:21:24Z xlv $
*
* Copyright 2005 Bruno Lowagie
*
* The contents of this file are subject to the Mozilla Public License Version 1.1
* (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.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the License.
*
* The Original Code is 'iText, a free JAVA-PDF library'.
*
* The Initial Developer of the Original Code is Bruno Lowagie. Portions created by
* the Initial Developer are Copyright (C) 1999, 2000, 2001, 2002 by Bruno Lowagie.
* All Rights Reserved.
* Co-Developer of the code is Paulo Soares. Portions created by the Co-Developer
* are Copyright (C) 2000, 2001, 2002 by Paulo Soares. All Rights Reserved.
*
* Contributor(s): all the names of the contributors are added in the source code
* where applicable.
*
* Alternatively, the contents of this file may be used under the terms of the
* LGPL license (the "GNU LIBRARY GENERAL PUBLIC LICENSE"), in which case the
* provisions of LGPL are applicable instead of those above. If you wish to
* allow use of your version of this file only under the terms of the LGPL
* License and not to allow others to use your version of this file under
* the MPL, indicate your decision by deleting the provisions above and
* replace them with the notice and other provisions required by the LGPL.
* If you do not delete the provisions above, a recipient may use your version
* of this file under either the MPL or the GNU LIBRARY GENERAL PUBLIC LICENSE.
*
* This library is free software; you can redistribute it and/or modify it
* under the terms of the MPL as stated above or under the terms of the GNU
* Library General Public License as published by the Free Software Foundation;
* either version 2 of the License, or any later version.
*
* This library is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
* FOR A PARTICULAR PURPOSE. See the GNU Library general Public License for more
* details.
*
* If you didn't download this code from the following link, you should check if
* you aren't using an obsolete version:
* http://www.lowagie.com/iText/
*/
package com.aowagie.text.pdf.events;
import java.util.ArrayList;
import java.util.Iterator;
import com.aowagie.text.Document;
import com.aowagie.text.Paragraph;
import com.aowagie.text.Rectangle;
import com.aowagie.text.pdf.PdfPageEvent;
import com.aowagie.text.pdf.PdfWriter;
/**
* If you want to add more than one page event to a PdfWriter,
* you have to construct a PdfPageEventForwarder, add the
* different events to this object and add the forwarder to
* the PdfWriter.
*/
public class PdfPageEventForwarder implements PdfPageEvent {
/** ArrayList containing all the PageEvents that have to be executed. */
private final ArrayList events = new ArrayList();
/**
* Add a page event to the forwarder.
* @param event an event that has to be added to the forwarder.
*/
public void addPageEvent(final PdfPageEvent event) {
this.events.add(event);
}
/**
* Called when the document is opened.
*
* @param writer
* the PdfWriter for this document
* @param document
* the document
*/
@Override
public void onOpenDocument(final PdfWriter writer, final Document document) {
PdfPageEvent event;
for (final Iterator i = this.events.iterator(); i.hasNext(); ) {
event = (PdfPageEvent)i.next();
event.onOpenDocument(writer, document);
}
}
/**
* Called when a page is initialized.
*
* Note that if even if a page is not written this method is still called.
* It is preferable to use onEndPage to avoid infinite loops.
*
* @param writer
* the PdfWriter for this document
* @param document
* the document
*/
@Override
public void onStartPage(final PdfWriter writer, final Document document) {
PdfPageEvent event;
for (final Iterator i = this.events.iterator(); i.hasNext(); ) {
event = (PdfPageEvent)i.next();
event.onStartPage(writer, document);
}
}
/**
* Called when a page is finished, just before being written to the
* document.
*
* @param writer
* the PdfWriter for this document
* @param document
* the document
*/
@Override
public void onEndPage(final PdfWriter writer, final Document document) {
PdfPageEvent event;
for (final Iterator i = this.events.iterator(); i.hasNext(); ) {
event = (PdfPageEvent)i.next();
event.onEndPage(writer, document);
}
}
/**
* Called when the document is closed.
*
* Note that this method is called with the page number equal to the last
* page plus one.
*
* @param writer
* the PdfWriter for this document
* @param document
* the document
*/
@Override
public void onCloseDocument(final PdfWriter writer, final Document document) {
PdfPageEvent event;
for (final Iterator i = this.events.iterator(); i.hasNext(); ) {
event = (PdfPageEvent)i.next();
event.onCloseDocument(writer, document);
}
}
/**
* Called when a Paragraph is written.
*
* paragraphPosition will hold the height at which the
* paragraph will be written to. This is useful to insert bookmarks with
* more control.
*
* @param writer
* the PdfWriter for this document
* @param document
* the document
* @param paragraphPosition
* the position the paragraph will be written to
*/
@Override
public void onParagraph(final PdfWriter writer, final Document document,
final float paragraphPosition) {
PdfPageEvent event;
for (final Iterator i = this.events.iterator(); i.hasNext(); ) {
event = (PdfPageEvent)i.next();
event.onParagraph(writer, document, paragraphPosition);
}
}
/**
* Called when a Paragraph is written.
*
* paragraphPosition will hold the height of the end of the
* paragraph.
*
* @param writer
* the PdfWriter for this document
* @param document
* the document
* @param paragraphPosition
* the position of the end of the paragraph
*/
@Override
public void onParagraphEnd(final PdfWriter writer, final Document document,
final float paragraphPosition) {
PdfPageEvent event;
for (final Iterator i = this.events.iterator(); i.hasNext(); ) {
event = (PdfPageEvent)i.next();
event.onParagraphEnd(writer, document, paragraphPosition);
}
}
/**
* Called when a Chapter is written.
*
* position will hold the height at which the chapter will be
* written to.
*
* @param writer
* the PdfWriter for this document
* @param document
* the document
* @param paragraphPosition
* the position the chapter will be written to
* @param title
* the title of the Chapter
*/
@Override
public void onChapter(final PdfWriter writer, final Document document,
final float paragraphPosition, final Paragraph title) {
PdfPageEvent event;
for (final Iterator i = this.events.iterator(); i.hasNext(); ) {
event = (PdfPageEvent)i.next();
event.onChapter(writer, document, paragraphPosition, title);
}
}
/**
* Called when the end of a Chapter is reached.
*
* position will hold the height of the end of the chapter.
*
* @param writer
* the PdfWriter for this document
* @param document
* the document
* @param position
* the position of the end of the chapter.
*/
@Override
public void onChapterEnd(final PdfWriter writer, final Document document, final float position) {
PdfPageEvent event;
for (final Iterator i = this.events.iterator(); i.hasNext(); ) {
event = (PdfPageEvent)i.next();
event.onChapterEnd(writer, document, position);
}
}
/**
* Called when a Section is written.
*
* position will hold the height at which the section will be
* written to.
*
* @param writer
* the PdfWriter for this document
* @param document
* the document
* @param paragraphPosition
* the position the section will be written to
* @param depth
* the number depth of the Section
* @param title
* the title of the section
*/
@Override
public void onSection(final PdfWriter writer, final Document document,
final float paragraphPosition, final int depth, final Paragraph title) {
PdfPageEvent event;
for (final Iterator i = this.events.iterator(); i.hasNext(); ) {
event = (PdfPageEvent)i.next();
event.onSection(writer, document, paragraphPosition, depth, title);
}
}
/**
* Called when the end of a Section is reached.
*
* position will hold the height of the section end.
*
* @param writer
* the PdfWriter for this document
* @param document
* the document
* @param position
* the position of the end of the section
*/
@Override
public void onSectionEnd(final PdfWriter writer, final Document document, final float position) {
PdfPageEvent event;
for (final Iterator i = this.events.iterator(); i.hasNext(); ) {
event = (PdfPageEvent)i.next();
event.onSectionEnd(writer, document, position);
}
}
/**
* Called when a Chunk with a generic tag is written.
*
* It is useful to pinpoint the Chunk location to generate
* bookmarks, for example.
*
* @param writer
* the PdfWriter for this document
* @param document
* the document
* @param rect
* the Rectangle containing the Chunk
*
* @param text
* the text of the tag
*/
@Override
public void onGenericTag(final PdfWriter writer, final Document document,
final Rectangle rect, final String text) {
PdfPageEvent event;
for (final Iterator i = this.events.iterator(); i.hasNext(); ) {
event = (PdfPageEvent)i.next();
event.onGenericTag(writer, document, rect, text);
}
}
}