Re: show spinner until something is done

Hi Maarten,

I am just experimenting with it and it seems to work in my small example.
You brought my thoughts in a new direction - thanks a lot for it!

I started with adding it as html script: '' and will change it to smalltalk
code later.
I replaced the check for a dom element in the example with the check if the
file on the server exists.

Regards
Sabine

2016-07-25 22:12 GMT+02:00 Maarten Mostert-2 [via Smalltalk] <
[email protected]>:

> Hello Sabina,
>
> Don’t know how you do javascript and JQuery in Seaside (I use Appex) but
> can’t you build something like this:
>
>
> http://stackoverflow.com/questions/5525071/how-to-wait-until-an-element-exists
>
> Maarten,
>
>
>
> On 25 Jul 2016, at 11:52, Sabine Manaa <[hidden email]
> <http:///user/SendEmail.jtp?type=node&node=4907892&i=0>> wrote:
>
> I create pdf reports which are converted to pngs for small previews (and
> print/mail/export).
>
> When the user clicks at "report", there are several pdf reports and their
> pngs generated in the background.
> In this moment (When the user clicks at "report"), the application changes
> to the reports page.
> But in this moment, the repots possibly are not yet finished :-)
>
> So, I want to  show a spinner/counter for each of the reports and update
> each in the moment when the png is ready.
>
> I succeeded with all but the spinner/counter and the moment when the page
> renders. Its to late.
>
> My problem is that the page is rendered only in the moment, when the code
> is
> run. Not earlier.
> I assume the onLoad is to late? I tried several things for several hours
> :-(
> and now I want to ask the community.
>
> I reduced the problem to a very simple example: 2 methods with the
> question:
> how to change this code to update the counter 1,2,3,4...
> Very curious about a solution
>
>
> renderContentOn: html
>
> html div
> id: 'image';
> with: [ html text: 'Waiting for the report' ].
> html div
> id: 'counter';
> with: [ html text: 'This should count 1,2,3...' ].
> html document addLoadScript: (html jQuery ajax script: [ :script | self
> loadScriptIndex: 1 script: script ])
>
> loadScriptIndex: anIndex script: s
>
> | theIndex |
> (Delay forMilliseconds: 100) wait.
> theIndex := anIndex.
> "aPngFilename asFileReference exists" anIndex > 50 "simulate file is there
> after some time"
> ifTrue: [
> s << (s jQuery: #image)
> replaceWith: [ :h |
> h text: theIndex asString.
> h image
> altText: 'Report';
> width: '100%';
> url: 'http://localhost/reports/a.png' ] ]
> ifFalse: [ theIndex := theIndex + 1.
> s << (s jQuery: #counter)
> replaceWith: [ :h |
> h div
> id: #counter;
> with: [ h text: theIndex asString ] ].
> self
> loadScriptIndex: theIndex
> script: s
>
>
> and possibly
> registerTestApplication
> | theApplication |
> theApplication := WAAdmin register: RKATestView asApplicationAt: 'RKT'.
> theApplication
> addLibrary: JQDeploymentLibrary;
> addLibrary: JQUiDeploymentLibrary.
> ^ theApplication
>
>
>
>
>
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