fop/src/java/org/apache/fop/fo/FObjMixed.java

/*
 * $Id: FObjMixed.java,v 1.33 2003/03/05 21:48:01 jeremias 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
 *    apache@apache.org.
 *
 * 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 <jtauber@jtauber.com>. For more information on the Apache
 * Software Foundation, please see <http://www.apache.org/>.
 */
package org.apache.fop.fo;

import org.xml.sax.Locator;

/**
 * Base class for representation of mixed content formatting objects
 * and their processing
 */
public class FObjMixed extends FObj {
    /** TextInfo for this object */
    protected TextInfo textInfo = null;

    /**
     * @param parent FONode that is the parent of this object
     */
    public FObjMixed(FONode parent) {
        super(parent);
    }

    /**
     * @param data array of characters containing text to be added
     * @param start starting array element to add
     * @param length number of characters to add
     * @param locator location in fo source file. 
     */
    protected void addCharacters(char data[], int start, int length,
                                 Locator locator) {
        if (textInfo == null) {
            // Really only need one of these, but need to get fontInfo
            // stored in propMgr for later use.
            propMgr.setFontInfo(getFOTreeControl());
            textInfo = propMgr.getTextLayoutProps(getFOTreeControl());
        }

        FOText ft = new FOText(data, start, length, textInfo, this);
        ft.setLocation(locator);
        ft.setName("text");
        
        /* characters() processing empty for FOTreeHandler, not empty for RTF & MIFHandlers */
        getFOTreeControl().getFOInputHandler().characters(ft.ca, 0, ft.length);

        addChild(ft);
    }

    private void setup() {
        if (this.propertyList != null) {
            setupID();
        }
    }

    /**
     * @return iterator for this object
     */
    public CharIterator charIterator() {
        return new RecursiveCharIterator(this);
    }

    /**
     * This is a hook for an FOTreeVisitor subclass to be able to access
     * this object.
     * @param fotv the FOTreeVisitor subclass that can access this object.
     * @see org.apache.fop.fo.FOTreeVisitor
     */
    public void acceptVisitor(FOTreeVisitor fotv) {
        fotv.serveFObjMixed(this);
    }
}