Class ResourceLoader

Constructor Detail

• ResourceLoader

  protected ResourceLoader()

  Creates a new resource loader. You should generally not create you own resource loader, but instead use get() to get an instance.

Method Detail

• get

  public static ResourceLoader get()

  Returns the default ResourceLoader.

  Returns:

  the default ResourceLoader

• loadScript

  public void loadScript​(String scriptUrl,
                         ResourceLoader.ResourceLoadListener resourceLoadListener)

  Load a script and notify a listener when the script is loaded. Calling this method when the script is currently loading or already loaded doesn't cause the script to be loaded again, but the listener will still be notified when appropriate.

  Parameters:

  scriptUrl - the url of the script to load

  resourceLoadListener - the listener that will get notified when the script is loaded

• loadHtmlImport

  public void loadHtmlImport​(String htmlUrl,
                             ResourceLoader.ResourceLoadListener resourceLoadListener)

  Loads an HTML import and notify a listener when the HTML import is loaded. Calling this method when the HTML import is currently loading or already loaded doesn't cause the HTML import to be loaded again, but the listener will still be notified when appropriate.

  Parameters:

  htmlUrl - url of HTML import to load

  resourceLoadListener - listener to notify when the HTML import is loaded

• addOnloadHandler

  public static void addOnloadHandler​(com.google.gwt.dom.client.Element element,
                                      ResourceLoader.ResourceLoadListener listener,
                                      ResourceLoader.ResourceLoadEvent event)

  Adds an onload listener to the given element, which should be a link or a script tag. The listener is called whenever loading is complete or an error occurred.

  Parameters:

  element - the element to attach a listener to

  listener - the listener to call

  event - the event passed to the listener

  Since:

  7.3

• loadStylesheet

  public void loadStylesheet​(String stylesheetUrl,
                             ResourceLoader.ResourceLoadListener resourceLoadListener)

  Load a stylesheet and notify a listener when the stylesheet is loaded. Calling this method when the stylesheet is currently loading or already loaded doesn't cause the stylesheet to be loaded again, but the listener will still be notified when appropriate.

  Parameters:

  stylesheetUrl - the url of the stylesheet to load

  resourceLoadListener - the listener that will get notified when the stylesheet is loaded

• runWhenHtmlImportsReady

  protected void runWhenHtmlImportsReady​(Runnable runnable)

  Executes a Runnable when all HTML imports are ready. If the browser does not support triggering an event when HTML imports are ready, the Runnable is executed immediately.

  Parameters:

  runnable - the code to execute

  Since:

  8.1