Thanks.

The code in the last post didn’t come out too well! Here is the address of a GreaseMonkey script that uses the GM_IncludeOnce loader:

http://dharmafly.com/hackhud/hackhud.user.js

Enjoy!

Annesley

I wanted to create a more generic version of this script (GM_includeOnce for example) which was able to be more secure (not use unsafeWindow) if required. Also I wanted to remove what I believe is un-necessary polling in this script.

Here is what I came up with (please tear it to bits/make it better):

try {test=GM_includeOnce;}
catch (err) {
GM_log(’adding GM_includeOnce function’);
function GM_includeOnce(assets, callbackOnComplete, callbackOnTimeout, timeout, context) {
/*
GM_includeOnce(assets[, callbackOnComplete[, callbackOnTimeout[, timeout[, context]]]])
assets = [{url:”, existenceTest:func[, type: typeEnum]}] type is calculated from extension if not included
no callback is made without callbackOnComplete
default timeout is 10000 (10 seconds)
context is the object that the scripts are run on, defaults to this
callbackOnComplete is sent a closure style function as its only parameter which allows access to the variables
created in the scripts
*/

//private functions
var numAssets=assets.length, numJSAssets=0, numJSLoaded=0;
var timeoutTimer=setTimeout(callbackOnTimeout, timeout||10000);
var allScript=”, allCSS=”, importScript=”;
var asset, type, styleLink;

function accessFunc(localVar) {try{return eval(localVar);} catch (err) {}}

function allScriptsLoaded() {
GM_log(’allScriptsLoaded’);
clearTimeout(timeoutTimer);
//it may be better to add these scripts immediately rather than compiling the big string in some circumstances
GM_log(’compiling scripts’);
for (var a=0;a

I went down a rat-hole loading the files via GM_xmlhttprequest and trying to eval them (in the protected userscript scope). But I see now that even if that could work, the need to load CSS into the document puts you back where you (I) started.

I think the power of loading in a library like YUI (or Dojo via AOL’s CDN) is /huge/ and should drive the design of future versions of Greasemonkey if there’s not a safe and elegant way to do it now. I know the topic has been aired in the Greasemonkey mailing list.

Btw. I’m right there with you on prototyping and testing out new ideas on applications and pages. Even though I might in theory have access to those apps’ code, in practice its much easier (and cooler) this way.

Thanks for the comment. Opening up hosting of YUI would benefit lots of developers — not just Greasemonkey developers — but it would be especially nice in the GM context, absolutely. I hear you loud and clear.

-Eric