Use mxgraph to avoid external dependency of draw.io about nextcloud-drawio

[fti7]

Would be very nice to have the DrawIO App fully included in the Nextcloud App.
Also a Checkbox for "Dont use external Draw.io Services" to disable the PDF Export would be nice for Security Sensitive Environments :-)

[oparoz]

Why isn't it considered to supply the draw.io code as a dependency within this app?

[juliushaertl]

Btw. @pawelrojek Great app, works really nice so far 👍

[pawelrojek]

At the moment this can be achieved by deploying your own Draw.io instance and then changing the "Draw.io URL" in the App settings (the default value is "https://www.draw.io" but it can be changed to anything you want).

You can get Draw.io from here:
https://github.com/jgraph/draw.io

BTW it works with Apache, nginx and doesn't require Tomcat or Java at all (in the past draw.io/mxgraph were partially written in Java hence the ".war" files).

The "export" feature still requires external connection to "https://exp.draw.io/". See: jgraph/drawio#26

[poVoq]

I just noticed that a lot of the templates also seem to reference back to draw.io
So to get it fully offline you would probably also have to adapt all those .xml files as well.

[davidjgraph]

The image export server is available at https://github.com/jgraph/draw-image-export2