iteratorgeneratortag.java

webwork source

/*
 * WebWork, Web Application Framework
 *
 * Distributable under Apache license.
 * See terms of license at opensource.org
 */
package webwork.view.taglib.iterator;

import webwork.view.taglib.ActionTag;
import webwork.util.IteratorGenerator;
import webwork.util.ValueStack;

import javax.servlet.jsp.JspException;
import javax.servlet.jsp.tagext.Tag;

/**
 *	Generate an iterator
 *
 *	@author Rickard 謆erg ([e-mail])
 *	@version $Revision: 1.4 $
 */
public class IteratorGeneratorTag
   extends ActionTag
{
   // Attributes ----------------------------------------------------
   String valueAttr;
   String countAttr;
   String separatorAttr;
   // Constructor ---------------------------------------------------
   public void setParent(Tag t)
   {
      super.setParent(t);
      setName("'"+IteratorGenerator.class.getName()+"'");
   }

   // Public --------------------------------------------------------
   public void setVal(String aValue)
   {
      valueAttr = aValue;
   }

   public void setCount(String aCount)
   {
      countAttr = aCount;
   }
   public void setSeparator(String aChar)
   {
      separatorAttr = aChar;
   }

   // BodyTag implementation ----------------------------------------
   public int doStartTag() throws JspException
   {
      super.doStartTag();

      // Pop holder temporarily while we resolve names
      Object holder = getStack().popValue();

      ((IteratorGenerator)bean).setValues(findValue(valueAttr));
      if (countAttr != null)
         ((IteratorGenerator)bean).setCount(Integer.parseInt(findString(countAttr)));
      if (separatorAttr != null)
         ((IteratorGenerator)bean).setSeparator(findString(separatorAttr));

      // Execute the action now that it has got the appropriate values set
      // Trigger the execute by getting the value from the holder object
      if (holder instanceof ValueStack.ValueHolder)
      	((ValueStack.ValueHolder) holder).getValue();
      
      // Push holder back on stack
      getStack().pushValue(holder);
      return EVAL_BODY_INCLUDE;
   }
}