OPENPGP PLUGIN: Don't list expired/revoked GPG keys

[eerielili]

Hello, @fiaxh This PR should close #91.

Other features includes :

• Blocks sending a PGP message when your key is revoked or expired:

• Coloring and adding a label signaling if your already selected key is either revoked or expired:

Kind regards, lili

[eerielili]

Update: I did find a way. I'll need to modify the encryption_activated method in encryption_list_entry.vala. Working on it.

Edit: bingo!

Edit 2: I splitted the message, so if it's revoked:

or expired:

It still doesn't trigger if the key expires or revokes while dino is in use, but switching the encryption methods back and forth to GPG do rerun the check for expiry / revocation status and block the field accordingly.

Edit 3: It does trigger by switching back and forth conversations, or clicking the conversation in the left pane.

[eerielili]

I did add a warning in the account panel if the current selected key has expired or is revoked:

[eerielili]

It still doesn't trigger if the key expires or revokes while dino is in use

I finally managed to do that without needing to click on left pane or switching back and forth conversations. It involves calling method on_encryption_activated in send_text() method in main/src/ui/chat_input/chat_input_controller.vala if PGP is the encryption method, triggering the checks in the plugin.

Now, if you try to send a message but the key has expired or has been revoked while Dino is in use and you're in a chat, the input should be blocked with the following depending on your situation:

With this, I think all bases are covered.

@NicoHood @cjj20 Feel free to test and give feedback anytime

[eerielili]

@fiaxh Adapted for new UI:

Edit: added some coloring