tabbedpanetag.java

webwork source

/*
 * WebWork, Web Application Framework
 *
 * Distributable under Apache license.
 * See terms of license at opensource.org
 */

package webwork.view.taglib.ui;

import webwork.util.TabbedPane;
import webwork.util.BeanUtil;

import javax.servlet.jsp.JspException;
import javax.servlet.jsp.JspTagException;
import javax.servlet.jsp.PageContext;
import java.util.Map;
import java.util.Vector;

/**
 *	TabbedPane tag.
 *	@author Onyeje Bose ([e-mail])
 *	@version $Revision: 1.4 $
 */

public class TabbedPaneTag extends ComponentTag
{
   // Protected --------------------------------------------------------
   protected TabbedPane tabPane;
   protected String contentName;

   protected String strVal(String objName)
   {
      try {
         return String.valueOf(findValue(objName));
      } catch (Exception e) {
         return objName;
      }
   }


   // Public --------------------------------------------------------
   public TabbedPaneTag()
   {
      super.setTemplate("tabbedpane.jsp");
   }

   public String getSelectedUrl()
   {
      Map.Entry me = (Map.Entry) this.getContent().elementAt(this.getSelectedIndex());
      String str = BeanUtil.toStringValue(me.getValue());
      return str;
   }

   public int getColSpanLength()
   {
      return (this.getTabAlign().compareToIgnoreCase("CENTER") == 0 ? this.getContent().size() + 2 : this.getContent().size() + 1);
   }

   public String getIndexLink()
   {
      return ("TABBEDPANE_" + getId() + "_INDEX");
   }

   public String getContentName()
   {
      return this.contentName;
   }

   public void setContentName(String contentName)
   {
      this.contentName = strVal(contentName);

      Object obj = findValue(this.contentName);
      if (obj instanceof Vector)
         this.setContent((Vector) obj);
   }

   public int getSelectedIndex()
   {
      return tabPane.getSelectedIndex();
   }

   public void setSelectedIndex(int selectedIndex)
   {
      tabPane.setSelectedIndex(selectedIndex);
   }

   public java.util.Vector getContent()
   {
      return tabPane.getContent();
   }

   public void setContent(java.util.Vector content)
   {
      tabPane.setContent(content);
   }

   public String getTabAlign()
   {
      return tabPane.getTabAlign();
   }

   public void setTabAlign(String tabAlign)
   {
      tabPane.setTabAlign(strVal(tabAlign));
   }

    // BodyTagSupport overrides --------------------------------------
    public void setPageContext(PageContext aPageContext)
    {
        tabPane = new TabbedPane(0);
        contentName = null;
        setSelectedIndex(0);
        setTabAlign("'CENTER'");
        super.setPageContext(aPageContext);
    }

   // BodyTag implementation ----------------------------------------
   public int doStartTag() throws JspException
   {
      String indexStr = pageContext.getRequest().getParameter(getIndexLink());
      if (indexStr != null) {
         try {
            int index = Integer.parseInt(indexStr);
            this.setSelectedIndex((index < 0 ? 0 : index));
         } catch (Exception e) {
            throw new JspTagException("TabbedPane Error: " + e.toString());
         }
      }

      return super.doStartTag();
   }

   // IncludeTag overrides ------------------------------------------
   public void release()
   {
      this.setSelectedIndex(0);

      if (this.getTabAlign() == null)
         this.setTabAlign("'CENTER'");
   }
}