001    /*
002     * Copyright 2007 - 2007 JEuclid, http://jeuclid.sf.net
003     * 
004     * Licensed under the Apache License, Version 2.0 (the "License");
005     * you may not use this file except in compliance with the License.
006     * You may obtain a copy of the License at
007     *
008     *      http://www.apache.org/licenses/LICENSE-2.0
009     *
010     * Unless required by applicable law or agreed to in writing, software
011     * distributed under the License is distributed on an "AS IS" BASIS,
012     * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
013     * See the License for the specific language governing permissions and
014     * limitations under the License.
015     */
016    
017    /* $Id: AbstractTokenWithStandardLayout.java,v bc1d5fde7b73 2009/06/01 14:40:54 maxberger $ */
018    
019    package net.sourceforge.jeuclid.elements.presentation.token;
020    
021    import java.text.AttributedString;
022    
023    import net.sourceforge.jeuclid.LayoutContext;
024    import net.sourceforge.jeuclid.elements.support.GraphicsSupport;
025    import net.sourceforge.jeuclid.elements.support.text.StringUtil;
026    
027    import org.apache.batik.dom.AbstractDocument;
028    
029    /**
030     * Common functionality for all tokens where the text layout is based on the
031     * text content.
032     * 
033     * @version $Revision: bc1d5fde7b73 $
034     */
035    public abstract class AbstractTokenWithStandardLayout extends
036            AbstractTokenWithTextLayout {
037    
038        /**
039         * Default constructor. Sets MathML Namespace.
040         * 
041         * @param qname
042         *            Qualified name.
043         * @param odoc
044         *            Owner Document.
045         */
046        public AbstractTokenWithStandardLayout(final String qname,
047                final AbstractDocument odoc) {
048            super(qname, odoc);
049        }
050    
051        /** {@inheritDoc} */
052        @Override
053        protected AttributedString textContentAsAttributedString(
054                final LayoutContext now) {
055            return StringUtil.convertStringtoAttributedString(this.getText(), this
056                    .getMathvariantAsVariant(), GraphicsSupport
057                    .getFontsizeInPoint(now), now);
058        }
059    
060        /** {@inheritDoc} */
061        @Override
062        protected boolean isEmpty() {
063            return this.getText().length() == 0;
064        }
065    
066    }