Java tutorial
/* =========================================================== * JFreeChart : a free chart library for the Java(tm) platform * =========================================================== * * (C) Copyright 2000-2013, by Object Refinery Limited and Contributors. * * Project Info: http://www.jfree.org/jfreechart/index.html * * This library is free software; you can redistribute it and/or modify it * under the terms of the GNU Lesser General Public License as published by * the Free Software Foundation; either version 2.1 of the License, or * (at your option) 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 Lesser General Public * License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, * USA. * * [Oracle and Java are registered trademarks of Oracle and/or its affiliates. * Other names may be trademarks of their respective owners.] * * ----------------------------- * CategoryToolTipGenerator.java * ----------------------------- * (C) Copyright 2001-2008, by Object Refinery Limited. * * Original Author: David Gilbert (for Object Refinery Limited); * Contributor(s): -; * * Changes * ------- * 15-Apr-2004 : Separated tool tip method from CategoryItemLabelGenerator * interface (DG); * */ package org.jfree.chart.labels; import org.jfree.data.category.CategoryDataset; /** * A <i>category tool tip generator</i> is an object that can be assigned to a * {@link org.jfree.chart.renderer.category.CategoryItemRenderer} and that * assumes responsibility for creating text items to be used as tooltips for the * items in a {@link org.jfree.chart.plot.CategoryPlot}. * <p> * To assist with cloning charts, classes that implement this interface should * also implement the <code>org.jfree.util.PublicCloneable</code> interface (in * JCommon). */ public interface CategoryToolTipGenerator { /** * Generates the tool tip text for an item in a dataset. Note: in the * current dataset implementation, each row is a series, and each column * contains values for a particular category. * * @param dataset the dataset (<code>null</code> not permitted). * @param row the row index (zero-based). * @param column the column index (zero-based). * * @return The tooltip text (possibly <code>null</code>). */ public String generateToolTip(CategoryDataset dataset, int row, int column); }