Implement Per-User Change Tracking

[vmiklos]

Is your feature request related to a problem?

Yes. When Alice keeps typing and Bob enables change tracking, then surprisingly the typed characters of Alice will form a tracked insertion, which is surprising, since that was not the case a second ago and Alice didn't do anything other than typing.

Describe the solution you'd like

Move the "is recording" setting of change tracking to the view from the model, so it's per-user. And even better if the UI has a dropdown to choose if the change tracking would be off/just me/everyone.

Additional context

This is for COOL, but seeing e.g. "show non-printable characters" is also per-view in libreoffice desktop, probably it change tracking recording should be also per-view by default on the desktop, too.

[vmiklos]

https://gerrit.libreoffice.org/c/core/+/182076 and https://gerrit.libreoffice.org/c/core/+/182142 extend the sw xml debug dump code to make this easier to understand -- what is the internal state of the doc model and the view.

[vmiklos]

https://gerrit.libreoffice.org/c/core/+/182201 adds a per-view flag to track if changes are recorded or not.

[vmiklos]

https://gerrit.libreoffice.org/c/core/+/182302 adds an in-model setter for the new flag, the getter still needs doing.

[vmiklos]

https://gerrit.libreoffice.org/c/core/+/182345 with this, you can actually have per-view track change recording: toolbar button state, insert recording, delete recording etc is now per-view, not per-document.

[vmiklos]

https://gerrit.libreoffice.org/c/core/+/182418 is towards adding UI to have both per-view and per-doc recording.

[vmiklos]

https://gerrit.libreoffice.org/c/core/+/182455 adds UI to have both per-view & per-doc recording.

[vmiklos]

https://gerrit.libreoffice.org/c/core/+/182517 adds state support for this new UI, so you can see if recording is off/just-you/everyone.