Hello I am not actively working on this anymore, but if you're so inclined I can tell you what to change if you're comfortable modifying files. If you open /packages/trans_marine_save_area_to_pdf/blocks/save_area_to_pdf/controller.php. Line 78 has:

$mpdf->Output(t($c->getCollectionHandle().".pdf"), "D");

you should be able to remove the , "D" for:

$mpdf->Output(t($c->getCollectionHandle().".pdf"));

to instead open in a tab. Good luck. -J

Hello I am not actively working on this anymore, but if you're so inclined I can tell you what to change if you're comfortable modifying files. If you open /packages/trans_marine_save_area_to_pdf/blocks/save_area_to_pdf/controller.php. Line 78 has:

$mpdf->Output(t($c->getCollectionHandle().".pdf"), "D");

you should be able to remove the , "D" for:

$mpdf->Output(t($c->getCollectionHandle().".pdf"));

to instead open in a tab. Good luck. -J

Thanks for fast response.
Unfortunatelly, after that change it stopped working. When I click the button it refresh the page (so form is sent), but only difference is, that it's not downloading nothig, as well as nothing is opening in new tab.

I would appriciate if you would have some more advices. :)

You can also try replacing the "D" with "I"

$mpdf->Output(t($c->getCollectionHandle().".pdf"), "I");

Brilliant, we are much closer - it works, but opens in the same tab - is there option to add some kind of target="_blank" - or maybe change that "I" some other letter?

You can submit your form with target="_blank".
Eg:
<form id="reportFrm" name="reportFrm" target="_blank" action="{{ url($viewInfo['url'].'/report') }}" class="form-horizontal" method="post">
so when click on pdf button or priview it will open in new tab.