"No Records In List" displays momentarily before list is populated

[RichCPT]

It would be nice if Alpha had an extra property in the LIST to indicate what should appear as the LIST contents prior to populating it with data.

Currently, the “No records HTML” LIST Property value is what Alpha initially displays.

So, instead of displaying that message, show an animated wait icon, like this:

[FONT=Calibri]<img src="css/{dialog.Style}/wait.gif" >[/FONT]

That will give you a wait icon while the list is loading. There are different way a list can be built, so I’m not positive that it will work in your case. My initial LIST is “Static Data” that contains just the column names, that I expect back from SQL. I wait until the user gets to the wizard tab that contains the LIST and then I populate the LIST.

Anyway, if there is no data in the LIST (after it is populated) then you will need to replace the wait icon.

Do that by going to the LIST Builder, clicking “List Events” on the very bottom of the builder window, locate the “onListReady” event and put in something like the following JavaScript:

[FONT=Calibri]// LIST Event - onListReady[/FONT]
[FONT=Calibri]// Replace "LST_DOC_RPT" with the ID of you control[/FONT]
[FONT=Calibri]var lb = {dialog.Object}.getControl('LST_DOC_RPT');[/FONT]
[FONT=Calibri]if( lb._data.length == 0 ) {[/FONT]
[FONT=Calibri]  var lbContent = $('{dialog.ComponentName}.V.R1.' + 'LST_DOC_RPT' + '.CONTROL.CONTENT');[/FONT]
[FONT=Calibri]  if( lbContent ) {[/FONT]
[FONT=Calibri]     lbContent.innerHTML = '<div style="padding-left:24px; padding-top:24px;">No records found.</div>';[/FONT]
[FONT=Calibri]  }[/FONT]
[FONT=Calibri]}[/FONT]

-Rich F.

[Terrymorgan]

If you put your list on a panel you can render it before you go to that panel, so once you arrive at the panel it should display as you wish.

[peteconway]

i'm thinking maybe you should look at the options you have selected for the management of the List and maybe the backend, if using SQL, Indexing opportunities taken etc. If the data is taking to long to be ready, find that issue (database or fileserver) and fix it. That's what I'd be doing.
Stay Safe.
Pete

[Mark B]

Thanks. This has similarity of my method of just putting a message up (for a few seconds) that covers the list while it builds.

[scrimej]

A product I used years ago had a nice way of handling this, maybe Alpha can do the same, maybe a feature request, maybe someone has done something similar and can share the code.

Essentially, prior to each ajax callback you would issue a push operation that would put "lock" screen functionality on the call stack. Then the system would proceed to do whatever was in between the code until it encountered the pop operation to pop the "lock" screen from the stack. This was a great approach, I'd get a "Working" message, no flickers on the screen, and the end-user could not interact with the screen controls while my code was processing. Once the pop operation was issued, the screen was done loading and would refresh a single time with the updates made and the Wait message would automatically disappear.

Sorry to offer an idea and not a solution but this would be a great feature to add to Alpha.

[kiwibruce]

Does anybody know how to avoid the "No Records In List" message momentarily displaying before a list is populated but still have it display if there are actually no records in the list?

I get that a lot with one App!! Boy, I wish there was the ability to add a "Please wait" message as it was loading. I have never found a work around. But would love it if anyone here does have a work around.

[Mark B]

Does anybody know how to avoid the "No Records In List" message momentarily displaying before a list is populated but still have it display if there are actually no records in the list?