Examples of org.apache.wicket.ResourceReference

org.apache.wicket.ResourceReference
ResourceReference is essentially a reference to an actual resource which is shared through the Application. A ResourceReference has a name and a scope (within which the name must be unique). It may also have a locale or style. The locale and/or style do not need to be set on a resource reference because those values will automatically be determined based on the context in which the resource is being used. For example, if a ResourceReference is attached to an Image component, when the locale for the page switches, the Image component will notice this and automatically change the locale for the referenced resource as appropriate. It's for this reason that you don't typically have to use the constructor overloads taking a Locale or style (these details are essentially internal and so the framework uses setLocale/setStyle internally so you don't have to worry about it).
Package resources (resources which can be pulled from the classpath) do not have to be pre-registered. For custom situations though, resources may be added to the Application when the Application is constructed using {@link Application#getSharedResources()} followed by{@link SharedResources#add(Class,String,Locale,String,Resource)}, {@link SharedResources#add(String,Locale,Resource)}or {@link SharedResources#add(String,Resource)}.
If a component has its own shared resource which should not be added to the application construction logic in this way, it can lazy-initialize the resource by overriding the {@link #newResource()} method. In this method, the component should supply logic that creates theshared resource. By default the {@link #newResource()} method tries to resolve to a packageresource. @author Jonathan Locke

    setOutputMarkupId(true);
    form.setOutputMarkupId(true);
    setRenderBodyOnly(true);


    add(HeaderContributor.forJavaScript(JS));
    ResourceReference css = getCss();
    if (css != null)
    {
      add(HeaderContributor.forCss(css));
    }


    final WebMarkupContainer barDiv = new WebMarkupContainer("bar");
    barDiv.setOutputMarkupId(true);
    add(barDiv);


    final WebMarkupContainer statusDiv = new WebMarkupContainer("status");
    statusDiv.setOutputMarkupId(true);
    add(statusDiv);


    if (!(RequestCycle.get().getRequest() instanceof UploadWebRequest))
    {
      log.warn("UploadProgressBar will not work without an UploadWebRequest. See the javadoc for details.");
    }
    
    form.add(new AttributeModifier("onsubmit", true, new Model()
    {


      private static final long serialVersionUID = 1L;




      public Object getObject()
      {
        ResourceReference ref = new ResourceReference(RESOURCE_NAME);


        return "var def=new wupb.Def('" + form.getMarkupId() + "', '"
            + statusDiv.getMarkupId() + "', '" + barDiv.getMarkupId() + "', '"
            + getPage().urlFor(ref) + "'); wupb.start(def); return false;";
      }

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   * Performs the tree initialization. Adds header contribution for the
   * stylesheet.
   */
  private void init()
  {
    ResourceReference css = getCSS();
    if (css != null) 
    {
      add(HeaderContributor.forCss(css.getScope(), css.getName()));
    }
  }

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   * 
   * @return the url to use for the popup button/ icon
   */
  protected CharSequence getIconUrl()
  {
    return RequestCycle.get().urlFor(new ResourceReference(DatePicker.class, "icon1.gif"));
  }

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   * 
   * @return the url to use for the popup button/ icon
   */
  protected CharSequence getIconUrl()
  {
    return RequestCycle.get().urlFor(new ResourceReference(DatePicker.class, "icon1.gif"));
  }

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   */
  public BaseTree(String id, IModel<TreeModel> model)
  {
    super(id, model);


    ResourceReference css = getCSS();
    if (css != null)
    {
      add(HeaderContributor.forCss(css));
    }
  }

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    if (parent instanceof Border)
    {
      parent = parent.getParent();
    }
    final Class scope = parent.getClass();
    resourceReference = new ResourceReference(scope, path)
    {
      private static final long serialVersionUID = 1L;


      /**
       * @see org.apache.wicket.ResourceReference#newResource()

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          application.getSharedResources().add(Application.class, imageReferenceName,
            locale, style, imageResource);
        }


        // Create resource reference
        resourceReference = new ResourceReference(Application.class, imageReferenceName);
        resourceReference.setLocale(locale);
        resourceReference.setStyle(style);
      }
      else
      {

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      this.attribute = attribute;
      // Check whether it is a valid resource reference
      if (PackageResource.exists(clazz, href, getLocale(), getStyle()))
      {
        // Create the component implementing the link
        resourceReference = new ResourceReference(clazz, href, getLocale(), getStyle());
      }
      else
      {
        // The resource does not exist. Set to null and ignore when
        // rendering.

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   * @param response
   */
  public void renderHead(IHeaderResponse response)
  {
    response.renderJavascriptReference(JAVASCRIPT);
    ResourceReference css = getCSS();
    if (css != null)
    {
      response.renderCSSReference(css);
    }
  }

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   * 
   * @return the url to use for the popup button/ icon
   */
  protected CharSequence getIconUrl()
  {
    return RequestCycle.get().urlFor(new ResourceReference(DatePicker.class, "icon1.gif"));
  }

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