com.aowagie.text.Meta Maven / Gradle / Ivy
/*
* $Id: Meta.java 3373 2008-05-12 16:21:24Z xlv $
*
* Copyright 1999, 2000, 2001, 2002 by 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;
import java.util.ArrayList;
/**
* This is an Element that contains
* some meta information about the document.
*
* An object of type Meta can not be constructed by the user.
* User defined meta information should be placed in a Header-object.
* Meta is reserved for: Subject, Keywords, Author, Title, Producer
* and Creationdate information.
*
* @see Element
* @see Header
*/
public class Meta implements Element {
// membervariables
/** This is the type of Meta-information this object contains. */
private final int type;
/** This is the content of the Meta-information. */
private final StringBuffer content;
// constructors
/**
* Constructs a Meta.
*
* @param type the type of meta-information
* @param content the content
*/
Meta(final int type, final String content) {
this.type = type;
this.content = new StringBuffer(content);
}
/**
* Constructs a Meta.
*
* @param tag the tagname of the meta-information
* @param content the content
*/
public Meta(final String tag, final String content) {
this.type = Meta.getType(tag);
this.content = new StringBuffer(content);
}
// implementation of the Element-methods
/**
* Processes the element by adding it (or the different parts) to a
* ElementListener.
*
* @param listener the ElementListener
* @return true if the element was processed successfully
*/
@Override
public boolean process(final ElementListener listener) {
try {
return listener.add(this);
}
catch(final DocumentException de) {
return false;
}
}
/**
* Gets the type of the text element.
*
* @return a type
*/
@Override
public int type() {
return this.type;
}
/**
* Gets all the chunks in this element.
*
* @return an ArrayList
*/
@Override
public ArrayList getChunks() {
return new ArrayList();
}
/**
* @see com.aowagie.text.Element#isContent()
* @since iText 2.0.8
*/
@Override
public boolean isContent() {
return false;
}
/**
* @see com.aowagie.text.Element#isNestable()
* @since iText 2.0.8
*/
@Override
public boolean isNestable() {
return false;
}
// methods
/**
* appends some text to this Meta.
*
* @param string a String
* @return a StringBuffer
*/
public StringBuffer append(final String string) {
return this.content.append(string);
}
// methods to retrieve information
/**
* Returns the content of the meta information.
*
* @return a String
*/
public String getContent() {
return this.content.toString();
}
/**
* Returns the name of the meta information.
*
* @return a String
*/
public String getName() {
switch (this.type) {
case Element.SUBJECT:
return ElementTags.SUBJECT;
case Element.KEYWORDS:
return ElementTags.KEYWORDS;
case Element.AUTHOR:
return ElementTags.AUTHOR;
case Element.TITLE:
return ElementTags.TITLE;
case Element.PRODUCER:
return ElementTags.PRODUCER;
case Element.CREATIONDATE:
return ElementTags.CREATIONDATE;
default:
return ElementTags.UNKNOWN;
}
}
/**
* Returns the name of the meta information.
*
* @param tag iText tag for meta information
* @return the Element value corresponding with the given tag
*/
public static int getType(final String tag) {
if (ElementTags.SUBJECT.equals(tag)) {
return Element.SUBJECT;
}
if (ElementTags.KEYWORDS.equals(tag)) {
return Element.KEYWORDS;
}
if (ElementTags.AUTHOR.equals(tag)) {
return Element.AUTHOR;
}
if (ElementTags.TITLE.equals(tag)) {
return Element.TITLE;
}
if (ElementTags.PRODUCER.equals(tag)) {
return Element.PRODUCER;
}
if (ElementTags.CREATIONDATE.equals(tag)) {
return Element.CREATIONDATE;
}
return Element.HEADER;
}
}