Re: [T5.4] BeanEditor and Friends don't look as good as in Tap 5.3

[Lenny Primak]

I did some work on a mixin (very preliminary)
It generates correct markup for form-horizontal layout for beaneditor.

I will put it into flowlogix module or a separate module under flowlogix when 
its ready
-------- Example --------
<t:beaneditform t:mixins="formhorizontal" labelClass="col-md-3" object="obj"/>
-------- Code ----------
package com.flowlogix.website.mixins;

import com.google.common.base.Function;
import com.google.common.collect.Collections2;
import lombok.extern.slf4j.Slf4j;
import org.apache.tapestry5.BindingConstants;
import org.apache.tapestry5.MarkupWriter;
import org.apache.tapestry5.annotations.MixinAfter;
import org.apache.tapestry5.annotations.Parameter;
import org.apache.tapestry5.dom.Attribute;
import org.apache.tapestry5.dom.Element;
import org.apache.tapestry5.dom.Visitor;

/**
 *
 * @author lprimak
 */
@MixinAfter
@Slf4j
public class FormHorizontal
{
    private @Parameter(defaultPrefix = BindingConstants.LITERAL, value = 
"col-md-2") String labelClass;
    private @Parameter(defaultPrefix = BindingConstants.LITERAL, value = 
"col-md-8") String inputClass;
    
    
    public void afterRender(MarkupWriter mw)
    {
        mw.getElement().visit(new HV());
    }

    
    private class HV implements Visitor
    {
        @Override
        public void visit(Element element)
        {
            log.debug("EltName: " + element.getName()
                    + ", attr: " + 
Collections2.transform(element.getAttributes(), new Function<Attribute, 
String>()
            {
                @Override
                public String apply(Attribute input)
                {
                    return input.getName() + "=" + input.getValue();
                }
            }));
            
            if(element.getName().equals("label"))
            {
                String classAttr = element.getAttribute("class");
                if(classAttr.contains("control-label"))
                {
                    element.attribute("class", labelClass);
                    labelProcessed = true;
                }
            }            
            else if(labelProcessed)
            {
                labelProcessed = false;
                element.wrap("div", "class", inputClass);
            }
        }
        
        private boolean labelProcessed = false;
    }
}

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