package net.sourceforge.fenixedu.presentationTier.renderers;

import net.sourceforge.fenixedu.domain.UnitSiteBanner;
import pt.ist.fenixWebFramework.renderers.OutputRenderer;
import pt.ist.fenixWebFramework.renderers.components.HtmlComponent;
import pt.ist.fenixWebFramework.renderers.components.HtmlContainer;
import pt.ist.fenixWebFramework.renderers.components.HtmlInlineContainer;
import pt.ist.fenixWebFramework.renderers.components.HtmlText;
import pt.ist.fenixWebFramework.renderers.layouts.Layout;

/**
 * Specialized renderer to show the weight and the corresponding percentage of a
 * {@link UnitSiteBanner}.
 * 
 * @author cfgi
 */
public class UnitSiteBannerWeightRenderer extends OutputRenderer {

    private String percentClass;
    private String percentStyle;

    public String getPercentClass() {
	return percentClass;
    }

    /**
     * @property
     */
    public void setPercentClass(String percentClass) {
	this.percentClass = percentClass;
    }

    public String getPercentStyle() {
	return percentStyle;
    }

    /**
     * @property
     */
    public void setPercentStyle(String percentStyle) {
	this.percentStyle = percentStyle;
    }

    @Override
    protected Layout getLayout(Object object, Class type) {
	return new Layout() {

	    @Override
	    public HtmlComponent createComponent(Object object, Class type) {

		Integer weight = (Integer) object;
		float percentage = calculatePercentage(weight);

		HtmlContainer container = new HtmlInlineContainer();

		container.addChild(getWeightComponent(object));
		container.addChild(getPercentageComponent(percentage));

		return container;
	    }

	    private HtmlComponent getWeightComponent(Object object) {
		if (object == null) {
		    return new HtmlText("-");
		} else {
		    return renderValue(object, null, null);
		}
	    }

	    private HtmlText getPercentageComponent(float percentage) {
		HtmlText text = new HtmlText(String.format("(%.1f%%)", percentage));

		text.setClasses(getPercentClass());
		text.setStyle(getPercentStyle());

		return text;
	    }

	    private float calculatePercentage(Integer weight) {
		UnitSiteBanner banner = getBanner();
		return banner.getWeightPercentage();
	    }

	    private UnitSiteBanner getBanner() {
		return (UnitSiteBanner) getContext().getParentContext().getMetaObject().getObject();
	    }

	};
    }

}