254 lines
8.5 KiB
C#
254 lines
8.5 KiB
C#
using System;
|
|
using System.Collections;
|
|
using iTextSharp.text.rtf.parser;
|
|
using iTextSharp.text.rtf.parser.ctrlwords;
|
|
/*
|
|
* $Id: RtfDestination.cs,v 1.2 2008/05/13 11:26:00 psoares33 Exp $
|
|
*
|
|
*
|
|
* Copyright 2007 by Howard Shank (hgshank@yahoo.com)
|
|
*
|
|
* 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) 1999-2006 by Bruno Lowagie.
|
|
* All Rights Reserved.
|
|
* Co-Developer of the code is Paulo Soares. Portions created by the Co-Developer
|
|
* are Copyright (C) 2000-2006 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/
|
|
*/
|
|
namespace iTextSharp.text.rtf.parser.destinations {
|
|
|
|
/**
|
|
* <code>RtfDestination</code> is the base class for destinations according
|
|
* to the RTF Specification. All destinations must extend from this class.
|
|
*
|
|
* @author Howard Shank (hgshank@yahoo.com
|
|
*
|
|
* @since 2.0.8
|
|
*/
|
|
public abstract class RtfDestination {
|
|
/** Parser object */
|
|
protected RtfParser rtfParser = null;
|
|
|
|
/** Is data in destination modified? */
|
|
protected bool modified = false;
|
|
|
|
/** The last control word handled by this destination */
|
|
protected RtfCtrlWordData lastCtrlWord = null;
|
|
|
|
/** The <code>RtfDestinationListener</code>. */
|
|
private static ArrayList listeners = new ArrayList();
|
|
|
|
/**
|
|
* Constructor.
|
|
*/
|
|
public RtfDestination() {
|
|
rtfParser = null;
|
|
}
|
|
/**
|
|
* Constructor
|
|
* @param parser <code>RtfParser</code> object.
|
|
*/
|
|
public RtfDestination(RtfParser parser) {
|
|
this.rtfParser = parser;
|
|
}
|
|
/**
|
|
* Set the parser to use with the RtfDestination object.
|
|
*
|
|
* @param parser The RtfParser object.
|
|
*/
|
|
public virtual void SetParser(RtfParser parser) {
|
|
if (this.rtfParser != null && this.rtfParser.Equals(parser)) return;
|
|
this.rtfParser = parser;
|
|
}
|
|
/**
|
|
* Clean up when destination is closed.
|
|
* @return true if handled, false if not handled
|
|
*/
|
|
public abstract bool CloseDestination();
|
|
/**
|
|
* Handle a new subgroup contained within this group
|
|
* @return true if handled, false if not handled
|
|
*/
|
|
public abstract bool HandleOpeningSubGroup();
|
|
/**
|
|
* Clean up when group is closed.
|
|
* @return true if handled, false if not handled
|
|
*/
|
|
public abstract bool HandleCloseGroup();
|
|
|
|
/**
|
|
* Setup when group is opened.
|
|
* @return true if handled, false if not handled
|
|
*/
|
|
public abstract bool HandleOpenGroup();
|
|
/**
|
|
* Handle text for this destination
|
|
* @return true if handled, false if not handled
|
|
*/
|
|
public abstract bool HandleCharacter(int ch);
|
|
/**
|
|
* Handle control word for this destination
|
|
* @param ctrlWordData The control word and parameter information object
|
|
* @return true if handled, false if not handled
|
|
*/
|
|
public abstract bool HandleControlWord(RtfCtrlWordData ctrlWordData);
|
|
/**
|
|
* Method to set this object to the default values. Must be implemented in child class.
|
|
*/
|
|
public abstract void SetToDefaults();
|
|
|
|
/**
|
|
* Method to indicate if data in this destination has changed.
|
|
* @return true if modified, false if not modified.
|
|
*/
|
|
public bool IsModified() {
|
|
return modified;
|
|
}
|
|
|
|
// listener methods
|
|
|
|
/**
|
|
* Adds a <CODE>RtfDestinationListener</CODE> to the <CODE>RtfDestinationMgr</CODE>.
|
|
*
|
|
* @param listener
|
|
* the new RtfDestinationListener.
|
|
*/
|
|
public bool AddListener(IRtfDestinationListener listener) {
|
|
listeners.Add(listener);
|
|
return true;
|
|
}
|
|
|
|
/**
|
|
* Removes a <CODE>RtfDestinationListener</CODE> from the <CODE>RtfDestinationMgr</CODE>.
|
|
*
|
|
* @param listener
|
|
* the RtfCtrlWordListener that has to be removed.
|
|
*/
|
|
public bool RemoveListener(IRtfDestinationListener listener) {
|
|
int i = listeners.IndexOf(listener);
|
|
if (i >= 0) {
|
|
listeners.RemoveAt(i);
|
|
return true;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
protected RtfCtrlWordData BeforeCtrlWord(RtfCtrlWordData ctrlWordData) {
|
|
foreach (IRtfDestinationListener listener in listeners) {
|
|
listener.BeforeCtrlWord(ctrlWordData);
|
|
}
|
|
return null;
|
|
}
|
|
/**
|
|
*
|
|
*/
|
|
protected RtfCtrlWordData OnCtrlWord(RtfCtrlWordData ctrlWordData){
|
|
foreach (IRtfDestinationListener listener in listeners) {
|
|
listener.OnCtrlWord(ctrlWordData);
|
|
}
|
|
return null;
|
|
}
|
|
|
|
/**
|
|
*
|
|
*/
|
|
protected RtfCtrlWordData AfterCtrlWord(RtfCtrlWordData ctrlWordData){
|
|
foreach (IRtfDestinationListener listener in listeners) {
|
|
listener.AfterCtrlWord(ctrlWordData);
|
|
}
|
|
return null;
|
|
}
|
|
|
|
/**
|
|
*
|
|
*/
|
|
protected int BeforeCharacter(int ch){
|
|
foreach (IRtfDestinationListener listener in listeners) {
|
|
listener.BeforeCharacter(ch);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
*
|
|
*/
|
|
protected int OnCharacter(int ch){
|
|
foreach (IRtfDestinationListener listener in listeners) {
|
|
listener.OnCharacter(ch);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
*
|
|
*/
|
|
protected int AfterCharacter(int ch){
|
|
foreach (IRtfDestinationListener listener in listeners) {
|
|
listener.AfterCharacter(ch);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
*
|
|
* @return
|
|
*/
|
|
protected bool OnOpenGroup(){
|
|
foreach (IRtfDestinationListener listener in listeners) {
|
|
listener.OnOpenGroup();
|
|
}
|
|
return true;
|
|
}
|
|
|
|
/**
|
|
*
|
|
* @return
|
|
*/
|
|
protected bool OnCloseGroup(){
|
|
foreach (IRtfDestinationListener listener in listeners) {
|
|
listener.OnCloseGroup();
|
|
}
|
|
return true;
|
|
}
|
|
|
|
public virtual int GetNewTokeniserState() {
|
|
return RtfParser.TOKENISER_IGNORE_RESULT;
|
|
}
|
|
}
|
|
} |