package pt.ist.renderers.extensions;

import pt.ist.renderers.components.HtmlComponent;
import pt.ist.renderers.components.HtmlText;
import pt.ist.renderers.layouts.Layout;
import pt.utl.ist.fenix.tools.util.i18n.MultiLanguageString;

/**
 * This renderer has the same behaviour as the
 * {@link net.sourceforge.fenixedu.presentationTier.renderers.MultiLanguageStringRenderer}
 * but the context is limited to a certain number of characters.
 * 
 * @author cfgi
 */
public class ShortMultiLanguageStringRenderer extends MultiLanguageStringRenderer {

    private Integer length;
    private boolean tooltipShown;

    public ShortMultiLanguageStringRenderer() {
	super();

	this.tooltipShown = true;
    }

    public boolean isTooltipShown() {
	return tooltipShown;
    }

    /**
     * Chooses if a tooltip is added to the text when text is bigger than the
     * value given in {@link #setLength(Integer) length}.
     * 
     * @property
     */
    public void setTooltipShown(boolean tooltipShown) {
	this.tooltipShown = tooltipShown;
    }

    @Override
    public Integer getLength() {
	return this.length;
    }

    /**
     * Choose the amount of characters displayed. If the original text has more
     * than the value given the elipses are added.
     * 
     * @property
     */
    @Override
    public void setLength(Integer length) {
	this.length = length;
    }

    @Override
    protected String getRenderedText(MultiLanguageString mlString) {
	String content = super.getRenderedText(mlString);

	if (content != null && getLength() != null) {
	    if (content.length() > getLength()) {
		return content.substring(0, getLength()) + "...";
	    }
	}

	return content;
    }

    @Override
    protected HtmlComponent renderComponent(Layout layout, Object object, Class type) {
	HtmlComponent component = super.renderComponent(layout, object, type);

	MultiLanguageString mlString = (MultiLanguageString) object;

	String previous = super.getRenderedText(mlString);
	String current = getRenderedText(mlString);

	if (isTooltipShown()) {
	    if (!String.valueOf(previous).equals(String.valueOf(current))) {
		component.setTitle(HtmlText.escape(previous));
	    }
	}

	return component;
    }
}