Add Open in External Viewer from the PDF Viewer tab or window

[mjthoraval]

Thank you very much for this useful plugin.
I have a small suggestion to improve a bit the plugin if possible.
Most of the times, I open the PDF file in the Zotero PDF Viewer first, before I decide that I would like to open it in the external PDF viewer. With the current plugin, I still need to right-click on the PDF tab header -> Show in Library -> right-click on the item in the central pane -> Open in External Viewer.
It would save a few clicks to get access to the Open in External Viewer directly from the PDF Viewer tab. Maybe just below "Show in Library" after right-click on the PDF tab header. If the PDF Viewer is opened in a separate window, it would be nice to add it also below "Show in Library", in the "File" menu.

At the moment, I use the plugin mostly to get access to the full screen view of the PDF files, as it is not possible yet in Zotero.
Thank you very much.

[retorquere]

note to self:

https://groups.google.com/g/zotero-dev/c/rjqmbPSdsXs/m/uuhqQetwAAAJ

There are notifications when tab is added or selected, however, it probably won't help because the tab right-click menu is built and opened in Zotero_Tabs._openMenu method.

zotero(3)(+0000002): Notifier.trigger('add', 'tab', [tab-I9RWeCRn], {"tab-I9RWeCRn":{"itemID":16505}}) called [observers: 4]
zotero(3)(+0012534): Notifier.trigger('select', 'tab', [tab-EPrbB8Ox], {"tab-EPrbB8Ox":{"type":"reader"}}) called [observers: 4]

[notuntoward]

I just came here to make the same suggestion. I find that I mostly flip through pdfs using Zotero's internal reader, but when I want to make a comment, scribble a little derivation next to an equation or whatever, I need an external pdf reader with quality pen functions. Getting there would be a little bit quicker and more frictionless if there was a away to open the external reader while in the internal reader, without navigating back to the central pane.

I guess an "open external viewer" keyboard shortcut could be another way, in addition to clicking on PDF viewer tab.