UserVoiceBehavior.java

package de.flower.common.ui.behavior;

import org.apache.wicket.Component;
import org.apache.wicket.behavior.Behavior;
import org.apache.wicket.markup.html.IHeaderResponse;

/**
 * Renders uservoice feedback tab into page.
 *
 * @author flowerrrr
 */
public abstract class UserVoiceBehavior extends Behavior {

    @Override
    public void renderHead(final Component component, final IHeaderResponse response) {
        String token = getToken();
        if (token == null) {
            return;
        }
        String javascript = "var uv = document.createElement('script'); uv.type = 'text/javascript'; uv.async = true;\n" +
                "    uv.src = ('https:' == document.location.protocol ? 'https://' : 'http://') + 'widget.uservoice.com/" + token + ".js';\n" +
                "    var s = document.getElementsByTagName('script')[0]; s.parentNode.insertBefore(uv, s);";
        response.renderOnDomReadyJavaScript(javascript);
    }

    /**
     * Subclass should override
     * @return
     */
    protected abstract String getToken();
}