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From OmPrakash Muppirala <bigosma...@gmail.com>
Subject Re: scoping out FlexJS to replace Flex
Date Mon, 07 Aug 2017 18:24:20 GMT
I have created a JIRA here: https://issues.apache.org/jira/browse/FLEX-35349
for exploring HighCharts integration in FlexJS.  It does not look terribly
hard.  I just need to find some time to do it.

I will keep you posted.


On Mon, Aug 7, 2017 at 8:20 AM, Harbs <harbs.lists@gmail.com> wrote:

> I know nothing about LogAxis. I’ve personally never done any apps which
> use charts, so I’m not really equipped to comment on them.
> My app which I’ve migrated does do a LOT of drawing and it was much less
> painful to migrate than I feared.
> To figure out how much work it will be to migrate I suggest asking the
> following questions:
> 1. What flash APIs are used? Depending on the answer to that question,
> you’ll know how straightforward of a conversion it will be. Some APIs have
> similar counterparts. Others less so.
> 2. What HTML visuals can you use? You need to figure out whether it will
> be drawn using HTML elements, SVG, or Canvas. Each of those have their own
> challenges. FWIW, we have APIs for drawing to SVG which are very similar to
> the Flash Graphic APIs.
> I discuss my strategies in migration in my presentation here:
> https://www.youtube.com/watch?v=-FcLs0O-BWQ&index=5&list=
> PL4EsaSA9xpnnraJX7NzpX6eh_P95RO8Pj <https://www.youtube.com/
> watch?v=-FcLs0O-BWQ&index=5&list=PL4EsaSA9xpnnraJX7NzpX6eh_P95RO8Pj>
> The rest of the presentations should be helpful as well:
> https://www.youtube.com/playlist?list=PL4EsaSA9xpnnraJX7NzpX6eh_P95RO8Pj <
> https://www.youtube.com/playlist?list=PL4EsaSA9xpnnraJX7NzpX6eh_P95RO8Pj>
> > On Aug 7, 2017, at 6:05 PM, gkk gb <modjklist@comcast.net> wrote:
> >
> > Thanks for the detailed answers Harbs.
> >
> >
> > Regarding the 'classic Flex chart components' comment, are you hinting
> that ActionScript's LogAxis can likely be migrated to FlexJS? My app is
> built using LogAxis (which I've extended to draw minor tick marks).
> >
> >
> > If I had to build my own log axis, or in general, adding code to FlexJS
> or fixing a bug, is the code written in JS or AS? In other words, what
> knowledge/prerequisites does one need to contribute to FlexJS?
> >
> >
> > I also depend heavily on AMF (BlazeDS) and RemoteObject, but I see some
> work already going on there (which I'm very grateful for).
> >
> >>
> >>    On August 7, 2017 at 6:03 AM Harbs <harbs.lists@gmail.com> wrote:
> >>
> >>>>
> >>>        On Aug 7, 2017, at 2:03 AM, gkk gb <modjklist@comcast.net>
> wrote:
> >>>
> >>>        With flash plugin going away, I'll need to port my Flex
> application to either Air or FlexJS sometime in the next year or two. I
> have a couple initial questions...
> >>>
> >>>        Q1. My scientific web app is very data centric, with lots of
> charts. In particular, I depend heavily on log charts. Does FlexJS support
> logarithmic axes? I couldn't find it in the documentation.
> >>>
> >>>>
> >>    Charts are currently not an area where work has been done in FlexJS.
> I see two options here:
> >>
> >>       1. If you find JS chart components which do what you want, you
> can probably use them in your project with a thin wrapper. We did this with
> a color picker.
> >>
> >>       2. If you have classic Flex chart components, they can likely be
> migrated to FlexJS. There are many similar drawing commands.
> >>
> >>>>
> >>>        Q2. For new projects, could someone help me understand the key
> advantage(s) FlexJS has in the market compared to other technologies such
> as AngularJS, ExtJS, etc.? For example, if you're quoting a project to a
> client, what type of project is in the sweet spot for using FlexJS rather
> than the status quo (whatever that is)?
> >>>
> >>>>
> >>    The sweet spot for FlexJS is pretty much the same sweet spot that
> Flash had. If you have a single-page web app and you are familiar with Flex
> and Flash, I think you would find FlexJS many times more productive than
> any of the popular JS frameworks out there.
> >>
> >>    Before I started with FlexJS, I did quite a bit of work trying to
> make Angular work for me. I found it to be a horrible experience. It’s very
> unintuitive, hard to organize, slow, very easy to cause minification bugs,
> minification was difficult. etc.
> >>
> >>    React is probably the most popular JS framework today although
> Vue.js is giving it a run for the money. Both push declarative code like we
> have with MXML, but my personal opinion is that their approaches are more
> hacky and error prone.
> >>
> >>    No matter which framework you pick (other than FlexJS), you will be
> required to deal with deciding what version of JS you write (or
> TypeScript). Unless you write in vanilla JS, you will need to pick a
> compiler (i.e. Webpack or Babel). You will need to deal with all the
> idiosyncrasies of transpiling and minification. You will probably need to
> find components that fit your needs and get that to work. You’ll need to
> write HTML and CSS directly in addition to your JS code.
> >>
> >>    The beauty of FlexJS, is that all of that is taken care of you by
> the compiler. For the most part, you don’t need to know the intricacies
> (weirdness?) of css. You don’t need to figure out exactly which HTML
> elements and attributes you need. You don’t need to worry about how to load
> myriad HTML, CSS and JS files. You don’t need to worry about combining,
> trimming and minifying all your dependencies. etc.
> >>
> >>>>
> >>>        Q3. What is the goal of FlexJS release 1.0, and when will it
> likely occur? Is it expected to be enough to develop a basic, real, app
> that is robust/bug-free?
> >>>
> >>>>
> >>    We’re working towards 1.0. Exactly which feature warrent being
> called “1.0” is a matter of discussion. As far as being enough to build a
> basic real app? It’s there already. I have a number of apps I built using
> FlexJS. Some are panels for InDesign which are already being used by my
> clients. Another is a VERY complex web app which will be going into
> production soon. It’s a bit bleeding edge, but I’m definitely way more
> productive than I would be in any of the standard JS frameworks.
> >>
> >>>>
> >>>        Q4. Compared to other HTML technologies, will there will a lot
> of maintenance of FlexJS code when browsers get updated, for example, that
> break previous code, in the same way that JS/HTML development has today?
> Flex/Flash plug-in spoiled me in that regard (maintenance free). Now that
> the shoe will be on the other foot, so I wonder what to expect in terms of
> maintenance; will it be a matter of filing a JIRA bug for example?.
> >>>
> >>>>
> >>    We try very hard to abstract away browser inconsistencies. I think
> it’s pretty good, although there are probably some edge cases. This is a
> problem inherent in JS development, but FlexJS is likely better than most.
> >>
> >>    Harbs
> >>

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