Pdfmake: return promise while creating PDF (feature request)

[mattiLeBlanc]

Hi,

I really like what you have build.
For larger PDF's I would like to show a spinner so that people know the browser is crunching numbers until it is ready.
Any way you could return a promise so that I can kill the spinner when the promise is resolved?

Maybe even fancier, can you give an update on the creation progress so we can show a progress bar?

Cheers

[mattiLeBlanc]

Funny, I was proposing to fork and add a CB to the download. Today I want to push that to the branch and I see it has already been implemented LOL.
It is just not available in the Bower version yet.

[dohomi]

@mattiLeBlanc can you tell me where you see that there is a promise available? I currently try to debug the library for .downloadand .openwithout any success. Thanks!

[mattiLeBlanc]

Well, it is not a promise. I was incorrect in my comment. As I can see in the Download function

Document.prototype.download = function(defaultFileName, cb) 

it only supports a callback.
So I created my own promise and I resolve for example in the download CB.
Would still be nice if we could get some kind of feedback on percentage complete of PDF creation.

[dohomi]

@mattiLeBlanc thanks for your reply. Does .downloadworks for you on iOS? I don't see any error message, it simply does nothing.

[mattiLeBlanc]

I have not tried it on iOS, so I can't answer that question.
PDFMake utilises the features of the browser if I am not mistaken, so could it be that it doesnt work on Safari?
Have you tried Safari on a macbook? I only used pdfmake in Chrome.

[dohomi]

I'm running a web app and need to support system wide all browsers.. such a pain in the ass :) Only on iOS it doesn't work at all, no matter which browser. On all other its working quite well.

[mattiLeBlanc]

Maybe fall back on a server created pdf. You can run pdfmake also on node
(npm require) and return the results via base64 and save it on your browser.

I have example code for this if you need help
On 22 Oct 2015 7:23 pm, "Dominic Garms" [email protected] wrote:

I'm running a web app and need to support system wide all browsers.. such
a pain in the ass :) I works just not on iOS at all, doesnt matter which
browser. On all other its working quite well.

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Reply to this email directly or view it on GitHub
https://github.com/bpampuch/pdfmake/issues/157#issuecomment-150143506.

[92iruhd-hsetir]

Hi,
I have created 56 pages pdf file which takes 40Sec to download but i can not determine the progress( completed percentages ). and also i can not access my webpage until download is completed. The download callback triggers only at the end of completion. meanwhile i want to show downloaded percentages at the bottom of page like other pdf files and also want to access my web page when downloading is in process. Is it possible?