vmote       2003/08/11 23:30:04

  Added:       src/java/org/apache/fop/fo FOTreeEvent.java
                        FOTreeListener.java
  Log:
  1. convert fo.FOTreeHandler to fire events when it completes a PageSequence or 
document object
  2. move logic that starts layout from fo.FOTreeHandler to apps.Driver.
  3. add logic to apps.Driver to handle the events fired from fo.FOTreeHandler
  4. end result is that FOTreeHandler now allows other objects to handle page-sequence 
and document objects in a manner similar to the way SAX allows them to handle XML 
elements.
  
  Revision  Changes    Path
  1.1                  xml-fop/src/java/org/apache/fop/fo/FOTreeEvent.java
  
  Index: FOTreeEvent.java
  ===================================================================
  /*
   * $Id: FOTreeEvent.java,v 1.1 2003/08/12 06:30:04 vmote Exp $
   * ============================================================================
   *                    The Apache Software License, Version 1.1
   * ============================================================================
   *
   * Copyright (C) 1999-2003 The Apache Software Foundation. All rights reserved.
   *
   * Redistribution and use in source and binary forms, with or without modifica-
   * tion, are permitted provided that the following conditions are met:
   *
   * 1. Redistributions of source code must retain the above copyright notice,
   *    this list of conditions and the following disclaimer.
   *
   * 2. Redistributions in binary form must reproduce the above copyright notice,
   *    this list of conditions and the following disclaimer in the documentation
   *    and/or other materials provided with the distribution.
   *
   * 3. The end-user documentation included with the redistribution, if any, must
   *    include the following acknowledgment: "This product includes software
   *    developed by the Apache Software Foundation (http://www.apache.org/)."
   *    Alternately, this acknowledgment may appear in the software itself, if
   *    and wherever such third-party acknowledgments normally appear.
   *
   * 4. The names "FOP" and "Apache Software Foundation" must not be used to
   *    endorse or promote products derived from this software without prior
   *    written permission. For written permission, please contact
   *    [EMAIL PROTECTED]
   *
   * 5. Products derived from this software may not be called "Apache", nor may
   *    "Apache" appear in their name, without prior written permission of the
   *    Apache Software Foundation.
   *
   * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED WARRANTIES,
   * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
   * FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
   * APACHE SOFTWARE FOUNDATION OR ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
   * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLU-
   * DING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
   * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
   * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
   * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
   * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
   * ============================================================================
   *
   * This software consists of voluntary contributions made by many individuals
   * on behalf of the Apache Software Foundation and was originally created by
   * James Tauber <[EMAIL PROTECTED]>. For more information on the Apache
   * Software Foundation, please see <http://www.apache.org/>.
   */
  package org.apache.fop.fo;
  
  //java
  import java.util.EventObject;
  
  //fop
  import org.apache.fop.fo.pagination.PageSequence;
  
  /**
   * An Event used for notification that various stages of the building of an
   * FO tree have been completed. Specifically, these are currently used to
   * notify Driver when a PageSequence has been completed.
   */
  
  public class FOTreeEvent extends EventObject {
  
      private PageSequence pageSeq;
  
      public FOTreeEvent (Object source) {
          super(source);
      }
  
      public void setPageSequence(PageSequence pageSeq) {
          this.pageSeq = pageSeq;
      }
      public PageSequence getPageSequence () {
          return pageSeq;
      }
  }
  
  
  
  
  1.1                  xml-fop/src/java/org/apache/fop/fo/FOTreeListener.java
  
  Index: FOTreeListener.java
  ===================================================================
  /*
   * $Id: FOTreeListener.java,v 1.1 2003/08/12 06:30:04 vmote Exp $
   * ============================================================================
   *                    The Apache Software License, Version 1.1
   * ============================================================================
   *
   * Copyright (C) 1999-2003 The Apache Software Foundation. All rights reserved.
   *
   * Redistribution and use in source and binary forms, with or without modifica-
   * tion, are permitted provided that the following conditions are met:
   *
   * 1. Redistributions of source code must retain the above copyright notice,
   *    this list of conditions and the following disclaimer.
   *
   * 2. Redistributions in binary form must reproduce the above copyright notice,
   *    this list of conditions and the following disclaimer in the documentation
   *    and/or other materials provided with the distribution.
   *
   * 3. The end-user documentation included with the redistribution, if any, must
   *    include the following acknowledgment: "This product includes software
   *    developed by the Apache Software Foundation (http://www.apache.org/)."
   *    Alternately, this acknowledgment may appear in the software itself, if
   *    and wherever such third-party acknowledgments normally appear.
   *
   * 4. The names "FOP" and "Apache Software Foundation" must not be used to
   *    endorse or promote products derived from this software without prior
   *    written permission. For written permission, please contact
   *    [EMAIL PROTECTED]
   *
   * 5. Products derived from this software may not be called "Apache", nor may
   *    "Apache" appear in their name, without prior written permission of the
   *    Apache Software Foundation.
   *
   * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED WARRANTIES,
   * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
   * FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
   * APACHE SOFTWARE FOUNDATION OR ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
   * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLU-
   * DING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
   * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
   * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
   * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
   * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
   * ============================================================================
   *
   * This software consists of voluntary contributions made by many individuals
   * on behalf of the Apache Software Foundation and was originally created by
   * James Tauber <[EMAIL PROTECTED]>. For more information on the Apache
   * Software Foundation, please see <http://www.apache.org/>.
   */
  package org.apache.fop.fo;
  
  //java
  import java.util.EventListener;
  
  //sax
  import org.xml.sax.SAXException;
  
  //fop
  import org.apache.fop.apps.FOPException;
  
  /**
   * An Event used for notification that various stages of the building of an
   * FO tree have been completed. Specifically, these are currently used to
   * notify Driver when a PageSequence has been completed.
   */
  
  public interface FOTreeListener extends EventListener {
  
      abstract void foPageSequenceComplete (FOTreeEvent e) throws FOPException;
      abstract void foDocumentComplete (FOTreeEvent e) throws SAXException;
  
  }
  
  
  
  

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