This reverts part of f288367653 which
touches this file. I'm not entirely sure why it was changed, it looks
like a piece of refactoring that isn't complete yet, but MessageDelegate
still depends on a required room property.
This menu providers a few text editing related functions, like undo/redo, copy, paste, etc.
As far as I can tell, it never worked in a useful way, though: It operates on the activeFocusItem,
but as soon as one clicks on the menu, this becomes null. It is somewhat useable through shortcuts,
but the text fields have these shortcuts natively.
This is way more useful for sharing, as you can use this link in and
outside Matrix rooms. It also matches behavior with other clients like
Element Web.
I also cut some places where this shows unnecessarily, such as direct
chats and invite-only private rooms.
This happens semi-frequently to me and others - we reply to a user who
has left the room. Sometimes this is useful (for example, bringing up a
previous topic) but in most cases this is accidental, and almost
guaranteed to happen if you turned off join/leave events.
So I added a reminder when replying - which manifests as a small label
in the chatbar - that the user has left and can't be notified of your
reply.
Users generally expect search results to start appearing with the first
character typed; we shouldn't be setting minimum letter counts without
a very good reason. Excessive minimum letter counts are also bad
specifically for Chinese, which is highly information-dense.
Get rid of the minimum letter count.
CCBUG: 490972
Update `ChatDocumentHandler` so `RoomManger` is no longer required for saving the text in the chatbar between room switches. This is achieved by allowing `ChatDocumentHandler` to get the correct `ChatBarChache` itself rather than having to have it passed from `ChatBar.qml`. This avoids any race conditions.
