Disabled Ctrl+P and Ctrl+S in UniPDFFrame

EDOM · July 6, 2020

It can hide Toolbar button(print/download) in FrameLoaded event

but how can I prevent user use Ctrl+P to print and Ctrl+S to download PDF from UniPDFFrame

procedure TUniFrame_Employee.UniPDFFrameFrameLoaded(Sender: TObject);
begin
//Hide download button
UniSession.AddJS (UniPDFFrame_Cert.JSName + '.iframe.contentWindow.document.' + 'getElementById ("download").style.display = "none"');
UniSession.AddJS (UniPDFFrame_Cert.JSName + '.iframe.contentWindow.document.' + 'getElementById ("secondaryDownload").style.display = "none"');

// Hide print button
UniSession.AddJS (UniPDFFrame_Cert.JSName + '.iframe.contentWindow.document.' + 'getElementById ("print").style.display = "none"');
UniSession.AddJS (UniPDFFrame_Cert.JSName + '.iframe.contentWindow.document.' + 'getElementById ("secondaryPrint").style.display = "none"');
end;

Sherzod · July 6, 2020

2 hours ago, EDOM said:

how can I prevent user use Ctrl+P

One possible solution:

procedure TMainForm.UniPDFFrame1FrameLoaded(Sender: TObject);
begin
  // Disable printing
  UniPDFFrame1.JSInterface.JSCode(#1'.iframe.contentWindow.print=Ext.emptyFn;');
end;

Sherzod · July 6, 2020

3 hours ago, EDOM said:

but how can I prevent user use Ctrl+P to print and Ctrl+S to download PDF from UniPDFFrame

1. UniPDFFrame1.ClientEvents.UniEvents ->

function afterCreate(sender) 
{
    sender.disableKeysPrintSave = function() {
        // disable printing
        sender.iframe.contentWindow.print=Ext.emptyFn;
        // disable save
        $(sender.iframe.contentDocument).bind('keydown', function(e) {
            if (e.ctrlKey && (e.which == 83)) {
                e.preventDefault();
                return false;
            }
        });
        
    };
}

2. Usage:

procedure TMainForm.UniPDFFrame1FrameLoaded(Sender: TObject);
begin
  UniPDFFrame1.JSInterface.JSCall('disableKeysPrintSave', []);
end;

EDOM · July 7, 2020

15 hours ago, Sherzod said:

1. UniPDFFrame1.ClientEvents.UniEvents ->


function afterCreate(sender) 
{
    sender.disableKeysPrintSave = function() {
        // disable printing
        sender.iframe.contentWindow.print=Ext.emptyFn;
        // disable save
        $(sender.iframe.contentDocument).bind('keydown', function(e) {
            if (e.ctrlKey && (e.which == 83)) {
                e.preventDefault();
                return false;
            }
        });
        
    };
}

2. Usage:


procedure TMainForm.UniPDFFrame1FrameLoaded(Sender: TObject);
begin
  UniPDFFrame1.JSInterface.JSCall('disableKeysPrintSave', []);
end;

Hi Sherzod,
It works, thank you for your kind assistance!

EDOM · July 7, 2020

Hi Sherzod,

For security issue, I should keep logs when user have permission to download or print file
How can I detect when user triggered download and print event in UniPDFFrame ?
include clicked toolbar menu and use shortcut (Ctrl+P & Ctrl+S)

Thank you very much and looking forward to hearing from you.

Sherzod · July 7, 2020

22 minutes ago, EDOM said:

For security issue, I should keep logs when user have permission to download or print file
How can I detect when user triggered download and print event in UniPDFFrame ?
include clicked toolbar menu and use shortcut (Ctrl+P & Ctrl+S)

Thank you very much and looking forward to hearing from you.

Hi,

Well, I think you can use Ctrl+S to track downloads.

Sherzod · July 7, 2020

1 minute ago, Sherzod said:

Well, I think you can use Ctrl+S to track downloads.

But there is also a button as you noted, also need to consider.

Sherzod · July 7, 2020

39 minutes ago, EDOM said:

I should keep logs when user have permission to download

I do not take into account the previous codes.

1.

function afterCreate(sender)
{
    var me = sender;
    me.saveLog = function() {
        console.log("Saved...");
        //ajaxRequest...
    };
    
    me.attachLogEvents = function() {
        me.iframe.contentDocument.getElementById('download').addEventListener('click', me.saveLog);
        me.iframe.contentDocument.getElementById('secondaryDownload').addEventListener('click', me.saveLog);
        $(me.iframe.contentDocument).bind('keydown', function(e) {
            if (e.ctrlKey && (e.which == 83)) {
                me.saveLog();
            }
        });
    };
}

2.

procedure TMainForm.UniPDFFrame1FrameLoaded(Sender: TObject);
begin
  (Sender as TUniPDFFrame).JSInterface.JSCall('attachLogEvents', []);
end;

EDOM · July 9, 2020

On 7/7/2020 at 5:51 PM, Sherzod said:

I do not take into account the previous codes.

1.


function afterCreate(sender)
{
    var me = sender;
    me.saveLog = function() {
        console.log("Saved...");
        //ajaxRequest...
    };
    
    me.attachLogEvents = function() {
        me.iframe.contentDocument.getElementById('download').addEventListener('click', me.saveLog);
        me.iframe.contentDocument.getElementById('secondaryDownload').addEventListener('click', me.saveLog);
        $(me.iframe.contentDocument).bind('keydown', function(e) {
            if (e.ctrlKey && (e.which == 83)) {
                me.saveLog();
            }
        });
    };
}

2.


procedure TMainForm.UniPDFFrame1FrameLoaded(Sender: TObject);
begin
  (Sender as TUniPDFFrame).JSInterface.JSCall('attachLogEvents', []);
end;

Hi Sherzod,
Thank you for the prompt reply.
Your solution can handle Download & Ctrl+S event without problem.
I try to add the events to Print & Ctrl+P but failed in Ctrl+P (click toolbar print button can detect)
Could you please help to check on this issue.

});
};

Sherzod · July 9, 2020

2 hours ago, EDOM said:

I try to add the events to Print & Ctrl+P but failed in Ctrl+P (click toolbar print button can detect)
Could you please help to check on this issue.

Hello,

I will try to analyze for print too.
But keep in mind, in any case, you cannot be sure that the user has printed the page, because he can open the print dialog and print, and also cancel printing...

EDOM · July 10, 2020

23 hours ago, Sherzod said:

Hello,

I will try to analyze for print too.
But keep in mind, in any case, you cannot be sure that the user has printed the page, because he can open the print dialog and print, and also cancel printing...

Hi Sherzod,
Thank you for all the good advice you have given me.
I am looking forward to hearing from you.

Sherzod · July 10, 2020

Hi,

50 minutes ago, EDOM said:

Thank you for all the good advice you have given me.
I am looking forward to hearing from you.

Thank you.

You can try this approach:

procedure TMainForm.UniPDFFrame1FrameLoaded(Sender: TObject);
begin
  (Sender as TUniPDFFrame).JSInterface.JSCode(#1'.iframe.contentWindow.onafterprint=function(){ajaxRequest('#1', "pdialogclosed", [])};');
end;

procedure TMainForm.UniPDFFrame1AjaxEvent(Sender: TComponent; EventName: string;
  Params: TUniStrings);
begin
  if EventName = 'pdialogclosed' then
    ShowMessage('pdialogclosed');

end;

EDOM · July 15, 2020

On 7/10/2020 at 12:28 PM, Sherzod said:

You can try this approach:


procedure TMainForm.UniPDFFrame1FrameLoaded(Sender: TObject);
begin
  (Sender as TUniPDFFrame).JSInterface.JSCode(#1'.iframe.contentWindow.onafterprint=function(){ajaxRequest('#1', "pdialogclosed", [])};');
end;


procedure TMainForm.UniPDFFrame1AjaxEvent(Sender: TComponent; EventName: string;
  Params: TUniStrings);
begin
  if EventName = 'pdialogclosed' then
    ShowMessage('pdialogclosed');

end;

Hi Sherzod,

Thank you very much, it works perfectly!

loQsoft · March 9, 2024

Hi!

It is possible disable ?
- Print button
- Download button

or how can i disable buttons ?

Best Regards,

Sherzod · March 9, 2024

2 hours ago, loQsoft said:

It is possible disable ?
- Print button
- Download button

Hello,

This post may help you:

loQsoft · March 9, 2024

Thank you very much @Sherzod

Best Regards,

loQsoft · May 25, 2024

Hello! @Sherzod

How can I understand that the print button has been pressed?
I want to record that when the Print button is pressed, the PDF document is printed.

It is possible?

Best Regards,

Sherzod · May 26, 2024

5 hours ago, loQsoft said:

How can I understand that the print button has been pressed?

Hello,

If I understand correctly, you want to know whether the print button on the toolbar was pressed?

loQsoft · May 28, 2024

Yes, exactly, you are right. @Şerzod

Sherzod · May 28, 2024

27 minutes ago, loQsoft said:

Yes, exactly, you are right.

But, as you know, this does not give 100 percent confidence that the user has printed, since he can cancel the printing.

loQsoft · May 28, 2024

you are right @Sherzod

i know. i need just to know whether the print button on the toolbar was pressed

Best Regards,

Sherzod · May 29, 2024

6 hours ago, loQsoft said:

i know. i need just to know whether the print button on the toolbar was pressed

Hello,

By the way, this seems to be what you need or not?

On 7/10/2020 at 9:28 AM, Sherzod said:

You can try this approach:

procedure TMainForm.UniPDFFrame1FrameLoaded(Sender: TObject);
begin
  (Sender as TUniPDFFrame).JSInterface.JSCode(#1'.iframe.contentWindow.onafterprint=function(){ajaxRequest('#1', "pdialogclosed", [])};');
end;

procedure TMainForm.UniPDFFrame1AjaxEvent(Sender: TComponent; EventName: string;
  Params: TUniStrings);
begin
  if EventName = 'pdialogclosed' then
    ShowMessage('pdialogclosed');

end;

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Disabled Ctrl+P and Ctrl+S in UniPDFFrame

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