package net.sourceforge.fenixedu.presentationTier.renderers;

import pt.ist.fenixWebFramework.renderers.components.HtmlComponent;
import pt.ist.fenixWebFramework.renderers.components.HtmlText;
import pt.ist.fenixWebFramework.renderers.layouts.Layout;
import pt.ist.fenixWebFramework.renderers.utils.RenderKit;
import pt.ist.fenixWebFramework.renderers.utils.RendererPropertyUtils;

public class ConditionalObjectLinkRenderer extends ObjectLinkRenderer {

    /**
     * This render is used to create a link out of an object if a given boolean
     * property is true. You choose the link format and some properties can be
     * used to configure the link. You can also specify the link indirectly by
     * specifing a destination and then defining a destination with that name in
     * the place were ou use this renderer.
     * 
     * <p>
     * The link body is configured through a sub rendering of the object with
     * the specified layout and schema.
     * 
     * <p>
     * Example: <a href="#">Jane Doe</a>
     * 
     * @author pcma
     */

    private String visibleIf;

    public String getVisibleIf() {
	return visibleIf;
    }

    public void setVisibleIf(String visibleIf) {
	this.visibleIf = visibleIf;
    }

    protected Layout getLayout(Object object, Class type) {
	final Layout layout = super.getLayout(object, type);

	return new Layout() {

	    @Override
	    public HtmlComponent createComponent(Object object, Class type) {
		Boolean visible = Boolean.FALSE;
		try {
		    visible = (Boolean) RendererPropertyUtils.getProperty(getTargetObject(object), getVisibleIf(), false);
		} catch (ClassCastException e) {
		    e.printStackTrace();
		}

		if (visible) {
		    return layout.createComponent(object, type);
		} else {
		    String text = getText();
		    return (text != null) ? new HtmlText(text) : renderValue(object, RenderKit.getInstance().findSchema(
			    getSubSchema()), getSubLayout());
		}
	    }

	};
    }
}