doclistener.java

iText是一个能够快速产生PDF文件的java类库。iText的java类对于那些要产生包含文本

/*
 * $Id: DocListener.java 2564 2007-02-01 15:47:38Z blowagie $
 * $Name$
 *
 * Copyright (c) 1999, 2000, 2001, 2002 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.lowagie.text;

/**
 * A class that implements <CODE>DocListener</CODE> will perform some
 * actions when some actions are performed on a <CODE>Document</CODE>.
 *
 * @see		ElementListener
 * @see		Document
 * @see		DocWriter
 */

public interface DocListener extends ElementListener {
    
    // methods
    
	/**
	 * Signals that the <CODE>Document</CODE> has been opened and that
	 * <CODE>Elements</CODE> can be added.
	 */
    
    public void open(); // [L1]
    
    /**
     * Signals that the <CODE>Document</CODE> was closed and that no other
     * <CODE>Elements</CODE> will be added.
     * <P>
     * The outputstream of every writer implementing <CODE>DocListener</CODE> will be closed.
     */
        
    public void close(); // [L2] 
    
    /**
     * Signals that an new page has to be started.
     *
     * @return	<CODE>true</CODE> if the page was added, <CODE>false</CODE> if not.
     * @throws	DocumentException	when a document isn't open yet, or has been closed
     */
        
    public boolean newPage(); // [L3]
    
    /**
     * Sets the pagesize.
     *
     * @param	pageSize	the new pagesize
     * @return	a <CODE>boolean</CODE>
     */
        
    public boolean setPageSize(Rectangle pageSize); // [L4]
        
    /**
     * Sets the margins.
     *
     * @param	marginLeft		the margin on the left
     * @param	marginRight		the margin on the right
     * @param	marginTop		the margin on the top
     * @param	marginBottom	the margin on the bottom
     * @return	a <CODE>boolean</CODE>
     */
        
    public boolean setMargins(float marginLeft, float marginRight, float marginTop, float marginBottom);  // [L5]
        
    /**
     * Parameter that allows you to do margin mirroring (odd/even pages)
     * @param marginMirroring
     * @return true if succesfull
     */
    public boolean setMarginMirroring(boolean marginMirroring); // [L6]
        
    /**
     * Sets the page number.
     *
     * @param	pageN		the new page number
     */
        
    public void setPageCount(int pageN); // [L7]
    
    /**
     * Sets the page number to 0.
     */
        
    public void resetPageCount(); // [L8]

    /**
     * Changes the header of this document.
     *
     * @param	header		the new header
     */
    
    public void setHeader(HeaderFooter header); // [L9]
    
    /**
     * Resets the header of this document.
     */
    
    public void resetHeader(); // [L10]
    
    /**
     * Changes the footer of this document.
     *
     * @param	footer		the new footer
     */
    
    public void setFooter(HeaderFooter footer); // [L11]
    
    /**
     * Resets the footer of this document.
     */
    
    public void resetFooter(); // [L12]

}