Writing script src dynamically via wicket

Question

I want my page to load javascript dynamically to my body:

<script type= "text/javascript" src="this path should be decided from wicket dynamically"/>

I am using wicket version 1.4 therefore JavaScriptResourceReference does not exist in my version (for my inspection it wasn't ' )

how can I solve this ? thanks in advance :).

Answer 1

I specify my comment into an answer.

You can use this code snippet:

WebMarkupContainer scriptContainer = new WebMarkupContainer("scriptContainer ");
scriptContainer .add(new AttributeAppender("type", Model.of("text/javascript")));
scriptContainer .add(
    new AttributeAppender("src", urlFor(
        new JavaScriptResourceReference(
            YourClass.class, "JavaScriptFile.js"), null).toString()));
add(scriptContainer );

and the corresponding html:

<script wicket:id="scriptContainer "></script>

Just change the string JavaScriptFile.js to load any other Javascript file.

Answer 2

JavascriptPackageResource.getHeaderContributor() does exactly what you need.

You need nothing in your markup, just add the HeaderContributor it returns to your page.

Update: For Wicket 1.5 see the migration guide, but it goes like this:

public class MyPage extends WebPage {
   public MyPage() {
   }
   public void renderHead(IHeaderResponse response) {
     response.renderJavaScriptReference(new PackageResourceReference(YuiLib.class,
       "yahoo-dom-event/yahoo-dom-event.js"));
     response.renderCSSReference(new PackageResourceReference(AbstractCalendar.class,
      "assets/skins/sam/calendar.css"));
   }
}

If you want to put your <script> element in the body, you can simply declare it as a WebMarkupContainer and add an AttributeModifier to set the src attribute. Although in that case wicket won't generate the relative URLs for you, you have to do it yourself.