Automatically closing the process dialog (TUniPDFFrame)

[bbm]

Hi,

I use the TUniPDFFrame component. A PDF document is displayed in this component. During the manually started printing process, a progress dialog appears with a done button. Is there a way to automatically close this dialog after printing is complete?

Best regards

[Sherzod]

16 hours ago, bbm said:

I use the TUniPDFFrame component. A PDF document is displayed in this component. During the manually started printing process, a progress dialog appears with a done button. Is there a way to automatically close this dialog after printing is complete?

Hello,

I'll check it.

[SISBLU Software]

Any solution?

[Wilton Ergon]

I also realized this problem, uni-1.90.0.1547

[Roberto Nicchi]

I still see this problem in 1.90.0.1551

The progress dialog should automatically close if the print is completed or if cancelled. Now ramains always visible.

[KingOrmon]

On 3/20/2021 at 6:15 AM, Sherzod said:

Hello,

I'll check it.

Hi, Any solution ?

Regards

[Sherzod]

Hello,

I will try to analyze once again. 

[Frederick]

What happened? Clients are complaining that the application is not polished because of this issue.

[Sherzod]

Hello

@bbm

@SISBLU Software

@Wilton Ergon

@Roberto Nicchi

@KingOrmon

@Frederick

One possible solution:

1. MainForm.Script ->

function setupAutoClosePrintDialog(iframe, delayMs) {
    if (!iframe || !iframe.contentWindow || !iframe.contentDocument) return;

    function watchPrintDialog() {
        var doc = iframe.contentDocument;
        var timer = null;

        if (iframe.__pdfPrintObserver) {
            iframe.__pdfPrintObserver.disconnect();
            iframe.__pdfPrintObserver = null;
        }

        var observer = new MutationObserver(function() {
            var percentSpan = doc.querySelector('.dialog [data-l10n-id="print_progress_percent"]');
            var btn = doc.querySelector('.dialog #printCancel.overlayButton');
            if (
                percentSpan && percentSpan.textContent.trim() === "100%" &&
                btn && btn.offsetParent !== null
            ) {
                if (timer) return;
                timer = setTimeout(function() {
                    var percentAgain = doc.querySelector('.dialog [data-l10n-id="print_progress_percent"]');
                    var btnAgain = doc.querySelector('.dialog #printCancel.overlayButton');
                    if (
                        percentAgain && percentAgain.textContent.trim() === "100%" &&
                        btnAgain && btnAgain.offsetParent !== null
                    ) {
                        btnAgain.click();
                        observer.disconnect();
                        iframe.__pdfPrintObserver = null;
                        //console.log("Dialog auto-closed at 100% (no text check, delay: " + delayMs + " ms)");
                    }
                }, delayMs || 2000);
            } else {
                if (timer) {
                    clearTimeout(timer);
                    timer = null;
                }
            }
        });
        observer.observe(doc.body, { childList: true, subtree: true });

        iframe.__pdfPrintObserver = observer;
    }

    iframe.contentWindow.addEventListener('beforeprint', watchPrintDialog);
}

2. Usage, OnFrameLoaded ->

procedure TMainForm.UniPDFFrame1FrameLoaded(Sender: TObject);
begin
  JSInterface.JSCallGlobalDefer('setupAutoClosePrintDialog', [JSInterface.JSStatement((Sender as TUniPDFFrame).JSName + '.iframe')], 1000);
end;

 

[Frederick]

Thanks for the code.

I put the script code in the MainForm but the event code in another form since the report is printed from the latter.

Unfortunately, the dialogue box still remains on the screen after the print button is clicked and the print dialogue box is then cancelled.

Note: Even if I put the script code in the same form as the TUniPDFFrame control, the result is still the same.

Please see the attached video.

[Sherzod]

@Frederick

Have you attached the code to the OnFrameLoaded event?

[Frederick]

The code is as you have provided:-

procedure TfrmReports.pdfFrameFrameLoaded(Sender: TObject);
begin
   JSInterface.JSCallGlobalDefer('setupAutoClosePrintDialog', [JSInterface.JSStatement((Sender as TUniPDFFrame).JSName + '.iframe')], 1000);
end;

 

[Sherzod]

Browser?

[Frederick]

Chrome

[Sherzod]

Hmm, it works on my side...

[Frederick]

I'll research it further since on a bare bones project, the dialogue box is not seen.

[Sherzod]

Okay. 

[fraxzi]

Hi @Sherzod,

I adapted this. It works on my side.

Thanks!

[KingOrmon]

Hi,

I see a new versión of PDF.js that removes this message automatically ?

See this link:

https://mozilla.github.io/pdf.js/web/viewer.html

[KingOrmon]

55 minutes ago, KingOrmon said:

Hi,

I see a new versión of PDF.js that removes this message automatically ?

See this link:

https://mozilla.github.io/pdf.js/web/viewer.html

BTW, Would be good an update for PDF.js included in unigui ?