/* ================================================================

  * Cewolf : Chart enabling Web Objects Framework

  * ================================================================

  *

  * Project Info:  http://cewolf.sourceforge.net

  * Project Lead:  Guido Laures (guido@laures.de);

  *

  * (C) Copyright 2002, by Guido Laures

  *

  * 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., 59 Temple Place, Suite 330,

  * Boston, MA 02111-1307, USA.

  */

 package de.laures.cewolf.taglib.tags;

 import java.awt.Paint;

 import java.util.Map;

 import javax.servlet.jsp.JspException;

 import javax.servlet.jsp.PageContext;

 import de.laures.cewolf.ChartPostProcessor;

 import de.laures.cewolf.taglib.AbstractChartDefinition;

 import de.laures.cewolf.taglib.TaglibConstants;

 /**

  * Root tag <chart> of a chart definition. Defines all values for the

  * page scope variable of type ChartDefinition which is used by the img

  * tag to render the appropriate chart.

  * @author  Guido Laures

  */

 public abstract class AbstractChartTag extends CewolfTag implements CewolfRootTag, TaglibConstants, Painted {

     protected AbstractChartDefinition chartDefinition = createChartDefinition();

     protected abstract AbstractChartDefinition createChartDefinition();

     public int doStartTag(){

         return EVAL_BODY_INCLUDE;

     }

     public int doEndTag() throws JspException {

         pageContext.setAttribute(getId(), chartDefinition, PageContext.PAGE_SCOPE);

         return doAfterEndTag(EVAL_PAGE);

     }

     public void reset() {

     	chartDefinition = createChartDefinition();

     }

     public String getChartId() {

         return getId();

     }

     /**

      * Setter for property title.

      * @param title New value of property title.

      */

     public void setTitle(String title) {

         chartDefinition.setTitle(title);

     }

     /**

      * Setter for property xAxisLabel.

      * @param xAxisLabel New value of property xAxisLabel.

      */

     public void setXaxislabel(String xAxisLabel) {

         chartDefinition.setXAxisLabel(xAxisLabel);

     }

     /**

      * Setter for property xAxisLabel.

      * @param xAxisLabel New value of property xAxisLabel.

      */

     public void setYaxislabel(String yAxisLabel) {

         chartDefinition.setYAxisLabel(yAxisLabel);

     }

     public void setBackground(String src) {

         String srcFile = pageContext.getServletContext().getRealPath(src);

         chartDefinition.setBackground(srcFile);

     }

     public void setBackgroundimagealpha(Float alpha) {

         chartDefinition.setBackgroundImageAlpha(alpha.floatValue());

     }

     public void setAntialias(boolean anti) {

         chartDefinition.setAntialias(anti);

     }

     /**

      * Setter for property legend.

      * @param legend New value of property legend.

      */

     public void setShowlegend(boolean legend) {

         chartDefinition.setShowLegend(legend);

     }

     /**

      * Setter for property legend.

      * @param legend New value of property legend.

      */

     public void setLegendanchor(String anchor) {

         if ("north".equalsIgnoreCase(anchor)) {

             chartDefinition.setLegendAnchor(ANCHOR_NORTH);

         } else if ("south".equalsIgnoreCase(anchor)) {

             chartDefinition.setLegendAnchor(ANCHOR_SOUTH);

         } else if ("west".equalsIgnoreCase(anchor)) {

             chartDefinition.setLegendAnchor(ANCHOR_WEST);

         } else if ("east".equalsIgnoreCase(anchor)) {

             chartDefinition.setLegendAnchor(ANCHOR_EAST);

         }

     }

     public void addChartPostProcessor(ChartPostProcessor pp, Map params) {

         chartDefinition.addPostProcessor(pp);

         chartDefinition.addPostProcessorParams(params);

     }

     public void setPaint(Paint paint){

         chartDefinition.setPaint(paint);

     }

     /**

          * Setter for property type.

          * @param type New value of property type.

          */

     public void setType(String type) {

         chartDefinition.setType(type);

     }

 }