There are some traps:
- The
hiddenWindow
differs between platforms. It is XUL on Mac, and HTML else. - You should use
.setAttribute("src", url);
to reliably navigate.
The following works for me (Mac, Win7):
var urls = [
'http://en.wikipedia.org/wiki/Internet',
'http://en.wikipedia.org/wiki/IPv4',
'http://en.wikipedia.org/wiki/Multicast'
];
var hiddenWindow = Components.classes["@mozilla.org/appshell/appShellService;1"].
getService(Components.interfaces.nsIAppShellService).
hiddenDOMWindow;
function visitPage(url) {
var iframe = hiddenWindow.document.getElementById("my-iframe");
if (!iframe) {
// Always use html. The hidden window might be XUL (Mac)
// or just html (other platforms).
iframe = hiddenWindow.document.
createElementNS("http://www.w3.org/1999/xhtml", "iframe");
iframe.setAttribute("id", "my-iframe");
iframe.addEventListener("DOMContentLoaded", function (e) {
console.log("DOMContentLoaded: " +
e.originalTarget.location);
var u = urls.pop();
// Make sure there actually was something left to load.
if (u) {
visitPage(u);
}
});
hiddenWindow.document.documentElement.appendChild(iframe);
}
// Use .setAttribute() to reliably navigate the iframe.
iframe.setAttribute("src", url);
}
visitPage(urls.pop());
Don't reload the hiddenWindow
itself, or you will break lots of other code.