Description updated with details of the desired resolution. Design solution signed off by John and Ben.
** Description changed: spawned from efforts in bug 1336715 because the user's input toggle for airplane mode is both a reflection of user intent & the state of the backend....and the backend is unfortunately variable & lengthy to change (anywhere from 1 to ~10+ seconds sometimes) we need to have an intermediate/transition state....e.g. toggle to airplane mode on....then animate somehow that there's a transition happening, until it either fails/succeeds comment from dizzypaty Between the user’s action of toggling the airplane switcher on and/or off and the backend updating the state, the indicator icon displayed on the statusbar should be the following: network-idle.svg (https://drive.google.com/drive/#folders/0BzbnWoHmYF3aZTA4WHNPYW1jeUE/0BzbnWoHmYF3aS2pVejVicktrdm8/0BzbnWoHmYF3ablBITVByRnpzdEk). + + ---------------------------- + Desired resolution + + Summary: the interface should immediately respond to user input + confirming the action, even if the backend takes up to 20 seconds to + actually change state. Having the UI and backend out of sync for up to + 30 seconds is not a problem, as long as it always goes back into sync + after this delay. + + 1. When the user changes the flight mode toggle switch it should + instantly change state. + + 2. The backend should then be informed of the state change. + + 3. Up to 30 seconds later the backend completes the state change + + Note: The cellular connection indicator should always display the + backend state, not the current flight mode toggle switch state + + + Variation - user switches the flight mode toggle on and off rapidly. + + Once a flight mode state change request has been sent to the backend but + before a conformation that the state change is complete is received, all + further user interactions should be buffered on the client. When the + client receives conformation of the state change from the backend it + should check to see if the state is in sync with its buffer. If it is + in sync nothing happens and the buffer is cleared. If it is not in sync + another state change signal is sent to the backend and the buffer is + cleared. ** Changed in: ubuntu-ux Assignee: Vesa Rautiainen (vesar) => John Lea (johnlea) ** Changed in: ubuntu-ux Importance: Medium => High ** Changed in: ubuntu-ux Status: Triaged => Fix Committed -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1390136 Title: need a transition state for indicators reflecting laggy backends To manage notifications about this bug go to: https://bugs.launchpad.net/canonical-devices-system-image/+bug/1390136/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
