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package com.disney.groovity.tags;

import groovy.lang.Closure;

import java.util.Map;

import org.codehaus.groovy.runtime.typehandling.DefaultTypeTransformation;

import com.disney.groovity.Taggable;
import com.disney.groovity.doc.Attr;
import com.disney.groovity.doc.Tag;
/**
 * Logical elseif tag controls execution flow; must be preceded by If tag
 * 

* elseif(

    *
  • test: * an expression that evaluates to true or false,
  • *
{ *
// Code to execute when the test expression evaluates to true
* }); * *

Sample *

 *	<~<g:each var="i" in="${0..10}">
 *		<g:if test="${i % 2 == 0}">
 *			${i}.
 *		</g:if>
 *		<g:elseif test="${i % 3 == 0}">
 *			${i}:
 *		</g:elseif>
 *		<g:else>
 *			${i},
 *		</g:else>
 *	</g:each>~>
 *	
* * @author Alex Vigdor */ @Tag( info = "Logical elseif tag controls execution flow; must be preceded by If tag", body = "Code to execute when the test expression evaluates to true", sample= "<~\n" + " \n" + " ${i}.\n" + " \n" + " \n" + " ${i}:\n" + " \n" + " \n" + " ${i},\n" + " \n" + "~>", attrs = { @Attr( name = "test", info="an expression that evaluates to true or false", required = true ) } ) public class Elseif implements Taggable{ @SuppressWarnings("rawtypes") public Object tag(Map attributes, Closure body) { Boolean wasIfTrue = null; try{ wasIfTrue = (Boolean) get(body,"lastIfTagEvaluationResult"); } catch(Exception e){} if(wasIfTrue==null){ throw new RuntimeException("elseif{} must be preceded by if{}"); } if(!(wasIfTrue).booleanValue()){ Object test = resolve(attributes,"test"); if(!(test instanceof Boolean)){ test = DefaultTypeTransformation.castToBoolean(test); } try{ if(((Boolean)test).booleanValue()){ return body.call(); } } finally{ bind(body,"lastIfTagEvaluationResult", test); } } return null; } }




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