[Desktop] Update conversation list when a new message arrives
Summary:
When a new message is delivered, the conversation list should update by changing the preview text and re-sorting the conversations
Bonus bug discovered and fixed: previously, when the conversations list was being populated, it made a request for the first message in every conversation. This would be fine if the conversationdbusinterface pulled from local cache. However, this actually triggers a request to the phone for *every* conversation.
This should be handled differently in conversationdbusinterface's requestConversation as well, but that's a project for a later day (TODO comments added)
Test Plan:
- Launch SMS app
- Verify conversations list appears
- Verify lack of massive stream of debug output indicating lots of messages for the wrong conversation are being received
- Verify that opening a particular conversation shows the messages after a short delay while the backend fetches the content from the phone
- Verify that receiving a new message into an existing conversation updates the conversation list
Reviewers: KDE Connect, nicolasfella
Reviewed By: KDE Connect, nicolasfella
Subscribers: nicolasfella, apol, kdeconnect
Tags: KDE Connect
Differential Revision: https://phabricator.kde.org/D15608