Example usage for com.google.gwt.dom.client ScriptElement setPropertyBoolean

Introduction

In this page you can find the example usage for com.google.gwt.dom.client ScriptElement setPropertyBoolean.

Prototype

@Override
    public void setPropertyBoolean(String name, boolean value) 

Source Link

Usage

From source file:com.vaadin.client.ResourceLoader.java

License:Apache License

/**
 * 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./*from   ww w .  ja v a2  s .co m*/
 * 
 * 
 * @param scriptUrl
 *            url of script to load
 * @param resourceLoadListener
 *            listener to notify when script is loaded
 * @param async
 *            What mode the script.async attribute should be set to
 * @since 7.2.4
 */
public void loadScript(final String scriptUrl, final ResourceLoadListener resourceLoadListener, boolean async) {
    final String url = WidgetUtil.getAbsoluteUrl(scriptUrl);
    ResourceLoadEvent event = new ResourceLoadEvent(this, url, false);
    if (loadedResources.contains(url)) {
        if (resourceLoadListener != null) {
            resourceLoadListener.onLoad(event);
        }
        return;
    }

    if (preloadListeners.containsKey(url)) {
        // Preload going on, continue when preloaded
        preloadResource(url, new ResourceLoadListener() {
            @Override
            public void onLoad(ResourceLoadEvent event) {
                loadScript(url, resourceLoadListener);
            }

            @Override
            public void onError(ResourceLoadEvent event) {
                // Preload failed -> signal error to own listener
                if (resourceLoadListener != null) {
                    resourceLoadListener.onError(event);
                }
            }
        });
        return;
    }

    if (addListener(url, resourceLoadListener, loadListeners)) {
        ScriptElement scriptTag = Document.get().createScriptElement();
        scriptTag.setSrc(url);
        scriptTag.setType("text/javascript");

        scriptTag.setPropertyBoolean("async", async);

        addOnloadHandler(scriptTag, new ResourceLoadListener() {
            @Override
            public void onLoad(ResourceLoadEvent event) {
                fireLoad(event);
            }

            @Override
            public void onError(ResourceLoadEvent event) {
                fireError(event);
            }
        }, event);
        head.appendChild(scriptTag);
    }
}

---