firefoxurlxulsidebar

Get current page URL from a firefox sidebar extension

I'm writing a sidebar extension for Firefox and need a way to get the URL of the current page so I can check it against a database and display the results. How can I do this?

Solution 
  • window.top.getBrowser().selectedBrowser.contentWindow.location.href;

    might work, otherwise I think you need to use:

    var mainWindow = window.QueryInterface(Components.interfaces.nsIInterfaceRequestor)
                   .getInterface(Components.interfaces.nsIWebNavigation)
                   .QueryInterface(Components.interfaces.nsIDocShellTreeItem)
                   .rootTreeItem
                   .QueryInterface(Components.interfaces.nsIInterfaceRequestor)
                   .getInterface(Components.interfaces.nsIDOMWindow);

mainWindow.getBrowser().selectedBrowser.contentWindow.location.href;