001    /*
002     * Copyright 2002 - 2010 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 $ */
018    
019    package net.sourceforge.jeuclid.swing;
020    
021    import java.awt.event.MouseEvent;
022    import java.awt.event.MouseListener;
023    import java.util.List;
024    
025    import net.sourceforge.jeuclid.layout.JEuclidView.NodeRect;
026    
027    import org.w3c.dom.Node;
028    
029    /**
030     * A simple mouse listener for Graphics<=>Text association.
031     * 
032     * @version $Revision: $
033     */
034    public class JMathComponentMouseListener implements MouseListener {
035    
036        /**
037         * math component instance.
038         */
039        private final JMathComponent mathComponent;
040    
041        /**
042         * standard constructor.
043         * 
044         * @param mathComponentInstance
045         *            math component instance
046         */
047        public JMathComponentMouseListener(
048                final JMathComponent mathComponentInstance) {
049            this.mathComponent = mathComponentInstance;
050        }
051    
052        /**
053         * mouse click event handler.
054         * 
055         * @param e
056         *            mouse event
057         */
058        public final void mouseClicked(final MouseEvent e) {
059            final MathComponentUI ui = this.mathComponent.getUI();
060            final List<NodeRect> rectList = ui.getNodesAt(this.mathComponent, e.getX(), e.getY());
061            if (rectList != null && rectList.size() > 0) {
062                final Node lastNode = rectList.get(rectList.size() - 1).getNode();
063                this.mathComponent.getCursorListener().updateCursorPosition(
064                        lastNode);
065            }
066        }
067    
068        /**
069         * mouse pressed event (unused).
070         * 
071         * @param e
072         *            mouse event
073         */
074        public final void mousePressed(final MouseEvent e) {
075        }
076    
077        /**
078         * mouse pressed event (unused).
079         * 
080         * @param e
081         *            mouse event
082         */
083        public final void mouseReleased(final MouseEvent e) {
084        }
085    
086        /**
087         * mouse pressed event (unused).
088         * 
089         * @param e
090         *            mouse event
091         */
092        public final void mouseEntered(final MouseEvent e) {
093        }
094    
095        /**
096         * mouse pressed event (unused).
097         * 
098         * @param e
099         *            mouse event
100         */
101        public final void mouseExited(final MouseEvent e) {
102        }
103    }