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Posts Tagged ‘web 2.0’

ISPF on the web – Version 2

September 15, 2011 2 comments

Just a quick update, more details and info to follow soon.

My initial iteration of ISPF on the web required the user to still log on to TSO/ISPF on a 3270 and then start the web server inside their TSO/ISPF session before accessing it via a browser.

Whilst this was an interesting exercise and learning experience, obviously it’s about as useful as a chocolate fireguard in practice.

Hence the move to version 2!

The UI experience in the browser is the same but the back end is significantly different, running inside the IBM stand alone HTTP web server.

I am still developing this in my spare time, but as soon as I get a demo up and running I shall be adding more information so stay tuned.

ISPF on the web – Demo

April 19, 2010 Leave a comment

It’s taken a little bit of experimentation but I’ve come up with a basic drag and drop interface. So far there’s no back end interaction so all the interface does is pop up an alert to display the properties of what was dropped. There’s also a lot of ‘hard coded’ stuff to make things happen, but at this point but I’m more interested in the interface itself than the how.

On the right I’ve got a little tool box containing a trash can and a JES card reader (or at least the best impression I can come up with of one). By dragging the icons next to the files and data sets or PDS members onto the tools the idea is that you’d get the appropriate action. I had to use icons rather than the whole dataset name because the length of the dataset name meant I was getting a lot of ‘misses’ when dropping the elements onto the tools due to the way the jQuery UI drag and drop functionality works. Limiting it to the icons just made things a lot easier to use.

Oh, and although I didn’t demo it, if you scroll the page up and down, the toolbox stays in the same location so it’s always there to interact with.

The next steps are:

  • Add some front end code to the trash can to confirm you actually want to delete the item and then send the request to the back end
  • Add some code to send the job submission request to the back end where the REXX will have to try to confirm that this is actual JCL you are submitting, or at least that it has a job card.

This is actually pretty fun stuff to do!

More progress with ISPF on the web…

April 16, 2010 Leave a comment

Well, it’s been a bit of a battle but I’ve managed to get the basic dataset member and contents list function working to my satisfaction.

I decided to use the jQuery UI dialog function to create dialog boxes to display member lists and member and sequential dataset contents. I hit a few road blocks along the way, not least of which was propagating the capture of links so that I could get the data using jQuery Ajax functions.

One thing I found was that when you return a fragment of a page as a result of an ajax call, you can include fragments of javascript and they will be executed. The problem I had was that while this worked fine for the dataset list form (using the form plugin) it didn’t work when I intercepted the links myself.

Turns out that the jQuery Ajax functionality ($.get) executes the script before it invokes my callback routine to process the data. Since my callback has not run yet, the elements the script wants to manipulate (in the returned data) are not there yet so nothing worked!

In the end I managed to come up with a mechanism that propagated the link activity without having to embed script into the fragments but it was a pain to do.

One benefit though is that I am able to resize the dialog pop ups if need be inside that code. The best part was trying to find out if the pop up had scroll bars or not. Why is that so hard to do? Although in the end I found a really nice example of some code that I was able to modify to my needs.

Anyway, enough talk, here’s a couple of screen shots. The first shows multiple dialogs open with dataset member lists and contents.

The second screen shot shows that you can switch tabs and the dialogs remain open. Imagine this was another ISPF type function. Now you can mix and match the pop ups.

Because I am displaying info in pop up dialogs on the page, now I can start to think about drag and drop. For example I could drag a member from one member list to another to move or copy a member from one dataset to another.

Or I could copy a member or a dataset (from the dataset list) even onto a trash can icon to delete it.

Another thought I had was to have pre built jobs. Drag a job member onto a reader icon and it submits the job.

See, this stuff can be really REALLY cool!