Repeat

package me.davesmith.t5samples.components;

import org.apache.tapestry5.BindingConstants;
import org.apache.tapestry5.ComponentResources;
import org.apache.tapestry5.MarkupWriter;
import org.apache.tapestry5.annotations.*;
import org.apache.tapestry5.ioc.annotations.Inject;

@SupportsInformalParameters
public class Repeat<T> {

    @Parameter(required = true, defaultPrefix = BindingConstants.LITERAL)
    private Integer times;

    private int count;

    @Parameter(defaultPrefix = BindingConstants.LITERAL)
    private String element;

    String defaultElement() {
        return resources.getElementName();
    }

    @Inject
    private ComponentResources resources;

    @SetupRender
    boolean setup() {
        count = 0;
        return times > 0;
    }


    @BeginRender
    void begin(MarkupWriter writer) {
        count++;

        if (element != null) {
            writer.element(element);
            resources.renderInformalParameters(writer);
        }
    }

    @AfterRender
    Boolean after(MarkupWriter writer) {
        if (element != null) {
            writer.end();
        }

        return count < times ? false : null;
    }

}