package pt.ist.renderers;

import pt.ist.renderers.components.HtmlComponent;
import pt.ist.renderers.components.HtmlText;
import pt.ist.renderers.layouts.Layout;
import pt.ist.renderers.utils.RenderUtils;

/**
 * The default output renderer for a boolean value. The value is used to search
 * for the corresponding message in the resources. The key <tt>TRUE</tt> and
 * <tt>FALSE</tt> are used to retrieve the messages for the <tt>true</tt> and
 * <tt>false</tt> values.
 * 
 * @author cfgi
 */
public class BooleanRenderer extends OutputRenderer {

    private String trueLabel;
    private String falseLabel;
    private String nullLabel;
    private String bundle;

    public String getBundle() {
	return this.bundle;
    }

    /**
     * Chooses the label to be displayed when it is null
     * 
     * @property
     */
    public String getNullLabel() {
	return nullLabel;
    }

    public void setNullLabel(String nullLabel) {
	this.nullLabel = nullLabel;
    }

    /**
     * Chooses the bundle in wich the labels will be searched.
     * 
     * @property
     */
    public void setBundle(String bundle) {
	this.bundle = bundle;
    }

    public String getFalseLabel() {
	return this.falseLabel;
    }

    /**
     * The label to be used when presenting a <code>false</code> value.
     * 
     * @property
     */
    public void setFalseLabel(String falseLabel) {
	this.falseLabel = falseLabel;
    }

    public String getTrueLabel() {
	return this.trueLabel;
    }

    /**
     * The label to be used when presenting the <code>true</code> value.
     * 
     * @property
     */
    public void setTrueLabel(String trueLabel) {
	this.trueLabel = trueLabel;
    }

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

	    @Override
	    public HtmlComponent createComponent(Object object, Class type) {
		Boolean booleanValue = (Boolean) object;

		if (booleanValue == null) {
		    String nullLabel = getNullLabel();
		    return new HtmlText(nullLabel != null ? RenderUtils.getResourceString(getBundle(), nullLabel) : "");
		}

		String booleanResourceKey = getBooleanLabel(booleanValue);
		return new HtmlText(RenderUtils.getResourceString(getBundle(), booleanResourceKey));
	    }

	    private String getBooleanLabel(Boolean booleanValue) {
		String label = booleanValue ? getTrueLabel() : getFalseLabel();

		if (label != null) {
		    return label;
		} else {
		    return booleanValue.toString().toUpperCase();
		}
	    }

	};
    }
}