Easy: it asks you the details of your accounts on first access, and stores them in its configuration. When launched the next time, it tries to log you in automa

Easy: it asks you the details of your accounts on first access, and stores them in its configuration. When launched the next time, it tries to log you in automatically. It also waits for the login to complete before drawing the button, so that it can gray it out if the login fails. Then it continuously checks the network and changes the button to reflect mutated conditions: connection lost, new messages/post...