firefox-addon-sdk - How do you indicate that a Panel is loading an external contentURL?

Question

If you have a Panel that is linked to some contentURL, it stays blank until the entire request is finished. Is there any way to first fill the Panel with some local 'loading' message until the external page is finished loading?

Answer 1

创建页面时，您当然可以在面板中加载data.url('loading.html')页面。然后，一旦您想加载外部 URL，您只需更改contentURL面板的属性。我不确定该loading.html页面是否会保留，因为使用的 iframe 应该被换掉，但这就是我解决问题的方式。