Gears as a prototype platform

So the blog has been silent for a week.  I was hoping to not let that happen so early on, but I only have so much free time, and I have to divide it between getting things done and talking about getting things done. So here’s the scoop on what I’ve been working on:

I’ve been researching a lot of different areas to at least get some goals and rudimentary plans together.  In general, I’ve been trying to find all of the areas that can be used in some way to prototype the behavior I’m looking for.  The main code bases that I’m looking into are Gears and Webkit.  I’ve also been spending a lot of time with HTML5 and SVG.  At this point, I’m just a little overwhelmed.  The scope is obviously huge and I’m not sure where to start, but I think I’ve got some good ideas.

The First Step

As only one guy for now, I just want to get the minimum effort going that is required to get the project off of the ground.  I think the easiest way to start is to begin with javascript language improvements.  The easiest way to begin that is to build a translator.  So here’s the plan: I’m mostly a Java/JavaScript programmer and the easiest tool for me to use is ANTLR. It’s extremely fast to build grammars with and I think translating to existing JavaScript a la GWT will be a very fast approach.  Aspects of the new javascript such as actor style concurrency can be simulated using the Gears worker pool.

At first, I will just translate on the server, but the next step can be to create a new Gears module that will perform the translation on the client.  When a good working model is established the next steps can be decided from there.

Future steps

At some point in the future, a visual component of the plugin will be required.  Gears has nothing of the kind right now.  This will be a much bigger challenge than just having another language runtime.

While I don’t want to just settle for what is available, I do think that building off of existing technologies is much more realistic than starting completely from scratch.  I think that SVG could be a very good building block for the next evolution of the open web.  HMTL5 is currently planning on directly including it, so its support should increase dramatically over the coming months.  What we need is a better way of leveraging it.  sXBL is a start at componentization, but I think we need a more cohesive approach.

Starting from scratch would be extremely silly.  At the moment, I think that webkit has a very good base. It’s been proposed half-jokingly before, but I am saying non-jokingly now – I think some form of webkit as a plugin could work.  That is for a later date, though…


I don’t really expect anyone to pour time into some crazy scheme with no code to show for it yet, but if are interested and want to help, check out the group.  When I scrape some code together I’ll start a google code project.


Let’s Get Crackin’!

I recently had a conversation with Brad Neuberg about the concept of using a plugin to have an Open Web competitor.  Brad suggested that this was precisely what Google Gears was trying to do (sort of).  In a recent post of his (which has since sparked a conversation across the blogosphere), Brad discussed the definition of the term Open Web and its importance, but also how Gears can help to push the web forward. In our conversation, he asked, “If you were to add functionality to Gears that doesn’t enhance the web’s existing technologies, but rather creates new ones that live in the browser through Gears what would these look like?” The following was my response:


1. I think data binding needs to be built in – with mechanisms for formatting and validation (and if you mention XBL, I’ll respond with a blank stare.  Seriously? Stuff like that is the reason Flex and Silverlight are looking so good right now.)

2. HTML5 and SVG can get us most of the way there when it comes to visuals, but its not very friendly for application development because there’s no abstraction layer.  There is no way to compose or componentize a set of elements and attibutes together and then use it as a custom tag for example.  JavaScript frameworks have gone a long way towards simulating this, but it needs to be built in, and it needs to be easy. I would propose an addition to the HTML syntax that basically allows for templating in a very component oriented way.  These templates would be incorporated into the binding syntax, so that they could “re-template” when needed without having to make explicit DHTML calls. I would also advocate for staying with xml syntax.

3. CSS is a really cool idea, but it needs some re-evaluation.  First of all, it needs better layout management.  The hoops required currently are a little obscene.  Even adding a “layout-manager” property with a few possibilities would go a long way.  I would also definitely add CSS variables that, again, could be integrated with the binding layer.  CSS expressions were definitely a mistake, but variables would be extremely powerful.  For some ideas, just look at what webkit is doing with their css transformations and animations.  It would be so much simpler to just put a variable in.  Then a simple easing library could be used to change the variable over time to create animations. Finally, I think that CSS could be better incorporated into the new component model.  For example, it would be helpful to be able to scope rules to components, and allow custom tags to be selected.

4. I’m in the group of people that isn’t totally gung ho about JS2.  I understand the motivation, but its looking like a bit of a kitchen sink language. I think JS needs some improvements, but I’m actually looking at Erlang for inspiration instead of Java and Python.  In my vision of a future JavaScript, I see a few things.  First of all, I think there are some functional language features that would be good to add considering JavaScript is a lready a very functional language. I would like to add overloaded functions that use matching and guards for differentiation. I would also like to steal some aspects of the big Erlang feature of concurrent processes.  Here, I think, is a perfect convergence with Gears.  The Gears worker pools are a lot like Erlang processes (which I’m guessing you knew).  No shared state, separate process, and no access to the dom.  As I’m sure you know, this can be extremely helpful when trying to stay secure doing mashups, offload intesive operations from the main thread, and communicate with the server. Additionally, I think that there needs to be a little more in the way of modularizing code, allowing private data members, and facilitating better code reuse.  I think prototypal inheritance and mixins are definitely better than classes for the language, and I’d like to add some more syntax to encourage them.

It’s great to talk about the deficiencies in the technologies we have, but to really move forward, we need a conversation for what can come next. And by next I guess I mean the next next.  HTML5, CSS3, and JS2 are all really great things.  I encourage people to be as involved in those as possible, but I still have a lot of doubts about its ability to stay pragmatic, on track, and happen quickly.

If you could snap your fingers and have a plugin with a wide install base built for web applications (as opposed to web sites), what would it look like?  You can leave a comment, or even better, take a look at the group.