Skip to main content

How to download file from HTML/JS Widget

  • May 10, 2021
  • 2 replies
  • 1 view
B

Hello,

I created a widget HTML field into an uniface form. The widgetoperation load an html based on library javascript allowing to create charts.

Everything works well except the exporting part. The library javascript that I used (as a lot) allows to export chart as PNG/SVG/PDF format. It works well when I test it in a separated browser (the file is exported into the download folder) but nothing happened when I click on the export button in uniface ?

Do you know where is the problem ? Is there a parameter somewhere to fill ?

PS: I work on uniface 9.7

Thanks


2 replies

Iain Sharp
Forum|alt.badge.img+5
  • Iain Sharp
  • Inspiring
  • May 10, 2021

Hello,

I created a widget HTML field into an uniface form. The widgetoperation load an html based on library javascript allowing to create charts.

Everything works well except the exporting part. The library javascript that I used (as a lot) allows to export chart as PNG/SVG/PDF format. It works well when I test it in a separated browser (the file is exported into the download folder) but nothing happened when I click on the export button in uniface ?

Do you know where is the problem ? Is there a parameter somewhere to fill ?

PS: I work on uniface 9.7

Thanks


The HTML widget uses the cefrender (Chrome) engine, I have done a quick google, and I can't find a specific statement about how to support (or even if possible) downloads in the page. 

What we have done internally is to link the download button to a uniface extended trigger) and then used file operations to load/save the associated data. This relies on the fact that our displayed data is internal (so we have access to the original (pdf) file). 


Iain

Iain Sharp : Head of Technical Services, Jonas Metals Software
Norbert Lauterbach
Forum|alt.badge.img+3

Hello,

I created a widget HTML field into an uniface form. The widgetoperation load an html based on library javascript allowing to create charts.

Everything works well except the exporting part. The library javascript that I used (as a lot) allows to export chart as PNG/SVG/PDF format. It works well when I test it in a separated browser (the file is exported into the download folder) but nothing happened when I click on the export button in uniface ?

Do you know where is the problem ? Is there a parameter somewhere to fill ?

PS: I work on uniface 9.7

Thanks


We use

to make a "screenshot" and send the data as base64-encoded to Uniface

window.unifaceTriggers("T_PRINT", dataUrl);

Recent badge winners

Explore all badges
Terms & ConditionsAccessibility statement