235 lines
8.0 KiB
C#
235 lines
8.0 KiB
C#
using System;
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using System.Text;
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using System.Collections;
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using System.util;
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/*
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* $Id: Meta.cs,v 1.6 2008/05/13 11:25:12 psoares33 Exp $
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*
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*
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* Copyright 1999, 2000, 2001, 2002 by Bruno Lowagie.
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*
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* The contents of this file are subject to the Mozilla Public License Version 1.1
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* (the "License"); you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the License.
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*
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* The Original Code is 'iText, a free JAVA-PDF library'.
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*
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* The Initial Developer of the Original Code is Bruno Lowagie. Portions created by
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* the Initial Developer are Copyright (C) 1999, 2000, 2001, 2002 by Bruno Lowagie.
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* All Rights Reserved.
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* Co-Developer of the code is Paulo Soares. Portions created by the Co-Developer
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* are Copyright (C) 2000, 2001, 2002 by Paulo Soares. All Rights Reserved.
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*
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* Contributor(s): all the names of the contributors are added in the source code
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* where applicable.
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*
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* Alternatively, the contents of this file may be used under the terms of the
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* LGPL license (the "GNU LIBRARY GENERAL PUBLIC LICENSE"), in which case the
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* provisions of LGPL are applicable instead of those above. If you wish to
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* allow use of your version of this file only under the terms of the LGPL
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* License and not to allow others to use your version of this file under
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* the MPL, indicate your decision by deleting the provisions above and
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* replace them with the notice and other provisions required by the LGPL.
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* If you do not delete the provisions above, a recipient may use your version
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* of this file under either the MPL or the GNU LIBRARY GENERAL PUBLIC LICENSE.
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*
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* This library is free software; you can redistribute it and/or modify it
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* under the terms of the MPL as stated above or under the terms of the GNU
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* Library General Public License as published by the Free Software Foundation;
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* either version 2 of the License, or any later version.
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*
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* This library is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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* FOR A PARTICULAR PURPOSE. See the GNU Library general Public License for more
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* details.
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*
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* If you didn't download this code from the following link, you should check if
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* you aren't using an obsolete version:
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* http://www.lowagie.com/iText/
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*/
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namespace iTextSharp.text {
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/// <summary>
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/// This is an Element that contains
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/// some meta information about the document.
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/// </summary>
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/// <remarks>
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/// An object of type Meta can not be constructed by the user.
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/// Userdefined meta information should be placed in a Header-object.
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/// Meta is reserved for: Subject, Keywords, Author, Title, Producer
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/// and Creationdate information.
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/// </remarks>
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/// <seealso cref="T:iTextSharp.text.Element"/>
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/// <seealso cref="T:iTextSharp.text.Header"/>
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public class Meta : IElement {
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// membervariables
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///<summary> This is the type of Meta-information this object contains. </summary>
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private int type;
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///<summary> This is the content of the Meta-information. </summary>
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private StringBuilder content;
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// constructors
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/// <summary>
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/// Constructs a Meta.
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/// </summary>
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/// <param name="type">the type of meta-information</param>
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/// <param name="content">the content</param>
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public Meta(int type, string content) {
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this.type = type;
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this.content = new StringBuilder(content);
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}
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/// <summary>
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/// Constructs a Meta.
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/// </summary>
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/// <param name="tag">the tagname of the meta-information</param>
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/// <param name="content">the content</param>
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public Meta(string tag, string content) {
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this.type = Meta.GetType(tag);
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this.content = new StringBuilder(content);
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}
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// implementation of the Element-methods
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/// <summary>
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/// Processes the element by adding it (or the different parts) to a
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/// IElementListener.
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/// </summary>
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/// <param name="listener">the IElementListener</param>
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/// <returns>true if the element was processed successfully</returns>
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public bool Process(IElementListener listener) {
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try {
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return listener.Add(this);
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}
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catch (DocumentException) {
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return false;
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}
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}
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/// <summary>
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/// Gets the type of the text element.
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/// </summary>
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/// <value>a type</value>
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public int Type {
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get {
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return type;
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}
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}
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/// <summary>
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/// Gets all the chunks in this element.
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/// </summary>
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/// <value>an ArrayList</value>
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public ArrayList Chunks {
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get {
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return new ArrayList();
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}
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}
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/**
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* @see com.lowagie.text.Element#isContent()
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* @since iText 2.0.8
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*/
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public bool IsContent() {
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return false;
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}
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/**
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* @see com.lowagie.text.Element#isNestable()
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* @since iText 2.0.8
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*/
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public bool IsNestable() {
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return false;
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}
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// methods
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/// <summary>
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/// appends some text to this Meta.
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/// </summary>
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/// <param name="str">a string</param>
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/// <returns>a StringBuilder</returns>
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public StringBuilder Append(string str) {
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return content.Append(str);
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}
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// methods to retrieve information
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/// <summary>
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/// Returns the content of the meta information.
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/// </summary>
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/// <value>a string</value>
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public string Content {
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get {
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return content.ToString();
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}
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}
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/// <summary>
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/// Returns the name of the meta information.
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/// </summary>
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/// <value>a string</value>
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public virtual string Name {
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get {
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switch (type) {
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case Element.SUBJECT:
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return ElementTags.SUBJECT;
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case Element.KEYWORDS:
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return ElementTags.KEYWORDS;
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case Element.AUTHOR:
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return ElementTags.AUTHOR;
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case Element.TITLE:
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return ElementTags.TITLE;
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case Element.PRODUCER:
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return ElementTags.PRODUCER;
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case Element.CREATIONDATE:
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return ElementTags.CREATIONDATE;
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default:
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return ElementTags.UNKNOWN;
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}
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}
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}
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/// <summary>
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/// Returns the name of the meta information.
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/// </summary>
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/// <param name="tag">name to match</param>
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/// <returns>a string</returns>
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public static int GetType(string tag) {
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if (ElementTags.SUBJECT.Equals(tag)) {
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return Element.SUBJECT;
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}
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if (ElementTags.KEYWORDS.Equals(tag)) {
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return Element.KEYWORDS;
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}
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if (ElementTags.AUTHOR.Equals(tag)) {
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return Element.AUTHOR;
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}
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if (ElementTags.TITLE.Equals(tag)) {
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return Element.TITLE;
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}
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if (ElementTags.PRODUCER.Equals(tag)) {
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return Element.PRODUCER;
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}
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if (ElementTags.CREATIONDATE.Equals(tag)) {
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return Element.CREATIONDATE;
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}
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return Element.HEADER;
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}
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public override string ToString() {
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return base.ToString();
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}
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}
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}
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