Printing in NG (Desktop)-Client

Forum to discuss the new web client version of Servoy.

Printing in NG (Desktop)-Client

Postby rph » Mon May 03, 2021 11:57 am

Hi all

I'm working on migration form Smart- to NG-Client. One thing I'm stuck on is the way of printing. I'm aware that printing directly from the browser is not possible. But it really not possible to print in NG Desktop-Client? At least I couldn't find a way to do that.

In the Smart-Client for example we used to print like this:

Code: Select all
plugins.jasperPluginRMI.runReport(fs,
       "myJasperReport.jasper",
       "NameOfMyPrinter",
       plugins.jasperPluginRMI.OUTPUT_FORMAT.PRINT,
       parameterObjekt,
       i18n.getCurrentLanguage() + "_" + i18n.getCurrentCountry())


The printer "NameOfMyPrinter" has all the required printer settings (such as the tray for example). So if I run this report, the output is sent directly to the printer and the output goes to the correct tray.

In the NG-Environment I check, if the user is in the "NG-Desktop"-Client:
Code: Select all
plugins.ngdesktoputils.isNGDesktop()

and if so, I try the same code as above. But then I get a JavaScript-Error.

Is there another way to do so? Maybe get the ByteArray that will be produced by Jasper and then send this somehow to a methode? I didn't find something like that. Maybe someone else has a solution for that.

We use Jasper-Plugin Version 6.12.2 and Servoy 2020.12.0.3622

I would be grateful for any suggestion.

Many thanks in advance
Roland
rph
 
Posts: 46
Joined: Wed Aug 10, 2011 11:44 am
Location: Cham, Switzerland

Re: Printing in NG (Desktop)-Client

Postby dcamargo » Mon May 03, 2021 3:33 pm

Hi Roland,

To print a jasper report from NG Client (browser) you could do the following:

Code: Select all
// Create a temporary file in the server (needs to start with '/')
var remoteFileName = '/temp_file.pdf';
var remoteFile = plugins.file.convertToJSFile(plugins.file.getDefaultUploadLocation() + remoteFileName);
// Print report to PDF
plugins.jasperPluginRMI.runReport(foundset, reportName, remoteFile, plugins.jasperPluginRMI.OUTPUT_FORMAT.PDF, params);
// Launch the print dialog for the PDF report file
plugins.ngclientutils.printDocument(plugins.file.getUrlForRemoteFile(remoteFileName));


For NG Desktop I haven't done printing directly to the printer, what error do you get?
Danny Camargo
Servoy & Web Developer
dcamargo
 
Posts: 8
Joined: Tue Aug 23, 2016 8:59 pm

Re: Printing in NG (Desktop)-Client

Postby rph » Mon May 03, 2021 5:18 pm

Hi Danny

Thanks a lot for your reply!

Yes, I've already tried this "plugins.ngclientutils.printDocument". But this basically just opens the browsers "Print Dialog". The user still has to choose the printer and then click the print-Button. This is ok, if I just have a few documents to print. But if I run a process that produces a lot of documents (for example a billing-process), then it's not very handy, if the user has to commit each printing job.

The error I got in the NG-Desktop-Client is the following:

A JavaScript error occurred in the main process

Code: Select all
Uncaught Exception:
TypeError [ERR_INVALID_ARG_TYPE]: The "path" argument must be of type string. Received
null
   at validateString (internal/validators.js:120:11)
   at Object.join (path.js:375:7)
   at Session.<anonymous>
(C:\Servoy\workspaces\OfficeNG\.metadata\plugins\com.servoy.eclipse.debug\servoy....:42)
   at Session.emit (events.js:315:20)
rph
 
Posts: 46
Joined: Wed Aug 10, 2011 11:44 am
Location: Cham, Switzerland

Re: Printing in NG (Desktop)-Client

Postby mboegem » Wed May 05, 2021 9:32 am

Hi Roland,

I assume you already updated the Jasper plugin to a NG-compatible version?

A generic way to use the result of a Jasper report is by generating the byteArray.
Then you can decide what you want to do with that.

So generate the report should be like this:
Code: Select all
var byteArray = plugins.jasperPluginRMI.runReport(fs,
       "myJasperReport.jasper",
       true,
       plugins.jasperPluginRMI.OUTPUT_FORMAT.PDF,
       parameterObjekt,
       i18n.getCurrentLanguage() + "_" + i18n.getCurrentCountry())


After that you could write it into the download folder like this:
Code: Select all
plugins.file.writeFile('myJasperReport.pdf', byteArray);


I don't think you'll be able to print it directly.
Instead you could preview it in the PDF viewer component, which has a print button and users can print it right away.

Hope that helps.
_____________________
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Solutiative / JBS Group, Partner
• Servoy Certified Developer
• Servoy Valued Professional
• Freelance SAN Developer

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Re: Printing in NG (Desktop)-Client

Postby Richard1521662995 » Wed May 05, 2021 10:02 am

Hi,

Once you have created your PDF as a file take a look at https://pradiptab.wordpress.com/tag/silent-print-in-servoy/. Works nicely in NG Client.

Richard
Richard Clarke
acss.co.uk
Richard1521662995
 
Posts: 25
Joined: Wed Mar 21, 2018 10:09 pm

Re: Printing in NG (Desktop)-Client

Postby rph » Wed May 05, 2021 10:23 am

Hi Marc

First of all: thanks for your inputs!

mboegem wrote:I assume you already updated the Jasper plugin to a NG-compatible version?


Yes, we have.

A generic way to use the result of a Jasper report is by generating the byteArray.
Then you can decide what you want to do with that.

So generate the report should be like this:
Code: Select all
var byteArray = plugins.jasperPluginRMI.runReport(fs,
       "myJasperReport.jasper",
       true,
       plugins.jasperPluginRMI.OUTPUT_FORMAT.PDF,
       parameterObjekt,
       i18n.getCurrentLanguage() + "_" + i18n.getCurrentCountry())


After that you could write it into the download folder like this:
Code: Select all
plugins.file.writeFile('myJasperReport.pdf', byteArray);


I don't think you'll be able to print it directly.
Instead you could preview it in the PDF viewer component, which has a print button and users can print it right away.


That's what we do so far, because we don't have a better solution.

As I wrote in my initial post: I know, that we couldn't print directly out of the WebBrowser (NG-Client). But what we would expect is, that we can do this in the NG-Desktop-Client. I would expect the function, that Richard mentioned in his post, but we need this on the client and not on the server side.

Best
Roland
rph
 
Posts: 46
Joined: Wed Aug 10, 2011 11:44 am
Location: Cham, Switzerland

Re: Printing in NG (Desktop)-Client

Postby rph » Wed May 05, 2021 10:28 am

Hi Richard

Thanks for your input!

Richard1521662995 wrote:Once you have created your PDF as a file take a look at https://pradiptab.wordpress.com/tag/silent-print-in-servoy/. Works nicely in NG Client.


We already use this solution (in NG and in SmartClient). But the problem is: in NG-Client only the printers that are reachable on the server are available. This is perfect, as long as I don't host my solution in the cloud. But when we host the the server in the cloud, then we don't have access to the printers on the client-side.

Best
Roland
rph
 
Posts: 46
Joined: Wed Aug 10, 2011 11:44 am
Location: Cham, Switzerland

Re: Printing in NG (Desktop)-Client

Postby Richard1521662995 » Wed May 05, 2021 1:46 pm

Hi Roland,

At the moment all our customers have on premise servers, so at the moment we are fine, but will be a problem for us as well if we host with a cloud server.

Richard.
Richard Clarke
acss.co.uk
Richard1521662995
 
Posts: 25
Joined: Wed Mar 21, 2018 10:09 pm

Re: Printing in NG (Desktop)-Client

Postby dcamargo » Wed May 05, 2021 3:23 pm

Hi Roland,

The only way to have access to client-side printers is by using NG Desktop

Best,
Danny Camargo
Servoy & Web Developer
dcamargo
 
Posts: 8
Joined: Tue Aug 23, 2016 8:59 pm

Re: Printing in NG (Desktop)-Client

Postby mboegem » Wed May 05, 2021 5:48 pm

rph wrote:As I wrote in my initial post: I know, that we couldn't print directly out of the WebBrowser (NG-Client). But what we would expect is, that we can do this in the NG-Desktop-Client. I would expect the function, that Richard mentioned in his post, but we need this on the client and not on the server side.

Hi Roland,

sorry, missed that bit.

Have a look at the ngclientutils plugin.
This plugins has a function printDocument.

The sample code look like this:
Code: Select all
// if url is not from same domain we must create a temporary file
var file = plugins.http.getMediaData(url);
var remoteFileName = application.getUUID().toString() + '.pdf';
var remoteFile = plugins.file.convertToRemoteJSFile('/'+remoteFileName)
remoteFile.setBytes(file,true);  //Convert the remote file to a url, and print it
var remoteUrl = plugins.file.getUrlForRemoteFile('/'+remoteFileName);
plugins.ngclientutils.printDocument(remoteUrl)


The function is using the browsers print dialog, so no further control on trays etc.

Another option to explore might be to use the ngdesktoputils plugin.
From there you can execute commands, so if you're able to find a command line solution to print pdf documents this could work.
_____________________
Marc Boegem
Solutiative / JBS Group, Partner
• Servoy Certified Developer
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• Freelance SAN Developer

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Posts: 1573
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Location: Amsterdam

Re: Printing in NG (Desktop)-Client

Postby rph » Thu May 06, 2021 8:28 am

Hi Marc

Thanks for these inputs again!

mboegem wrote:The sample code look like this:
Code: Select all
// if url is not from same domain we must create a temporary file
var file = plugins.http.getMediaData(url);
var remoteFileName = application.getUUID().toString() + '.pdf';
var remoteFile = plugins.file.convertToRemoteJSFile('/'+remoteFileName)
remoteFile.setBytes(file,true);  //Convert the remote file to a url, and print it
var remoteUrl = plugins.file.getUrlForRemoteFile('/'+remoteFileName);
plugins.ngclientutils.printDocument(remoteUrl)


The function is using the browsers print dialog, so no further control on trays etc.


That's what Danny also suggested. But as you write, it shows the browsers print dialog and the user has to confirm each printing. This isn't really handy if you run a job that generates a lot of document to print (for example a billing process). And it's even worser when you run a job in the background that finally should print the result.

mboegem wrote:Another option to explore might be to use the ngdesktoputils plugin.
From there you can execute commands, so if you're able to find a command line solution to print pdf documents this could work.

[/quote]

That sounds interesting. Maybe I'll give it a try. But first of all, I'll need to find a way to print from "outside of Servoy", so I can call this command.

Best
Roland
rph
 
Posts: 46
Joined: Wed Aug 10, 2011 11:44 am
Location: Cham, Switzerland

Re: Printing in NG (Desktop)-Client

Postby rph » Thu May 06, 2021 8:41 am

Hi Danny

Thanks for your comment.

dcamargo wrote:The only way to have access to client-side printers is by using NG Desktop


I'm aware of that. And I would use the NG Desktop client. But the solution you previously described just show me the browser print dialog.

So I'm still looking for a possibility to start printing automatically on client side, similar to the way Richard suggested. But Richard's suggestion only works on server-side.

Maybe it would be possible for Servoy to integrate this solution (https://pradiptab.wordpress.com/tag/sil ... in-servoy/) into the NG Desktop and present a wrapper so we could call this wrapper like this: plugins.ngdesktopprinting.print(fileName, printerName);

Best
Roland
rph
 
Posts: 46
Joined: Wed Aug 10, 2011 11:44 am
Location: Cham, Switzerland


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