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Flex navigation issue - ViewStack, states or something else?

I have a little doubt about my application which is being built using the Mate framework. The first thing the user needs to do is log in, so I created the Login.mxml view. After successful login, I need to display the main view with an applicationControlBar at the top and a workspace below. I have two separate views at the moment, so if I understand correctly it makes sense with a ViewStack.

Thing is, I would like to also show some kind of panel with buttons on top of the workspace after login - here is a screenshot.After clicking on the button, the panel should disappear. To complicate things a bit, chances are that this panel will change state. Clicking on a specific button may display a progress bar at the bottom of the panel.

I feel like I should create a separate view, MenuDialog.mxml, and put buttons, progress bar and status there, but how do I display it at the top of the workspace? Hope my problem is clear enough :)

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I would make a popUp panel with the main application (or parent ViewStack container) as the parent of the popUp. You can use the PopUpManager class to close it based on user actions in the panel.



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Assuming that perhaps you don't need a login style modal bar (which many of these apps are avoiding these days), you should absolutely use states and not ViewStacks.

States are a much cleaner way to differentiate between different ones, by asserting that your UI can be in -LOGGED_IN, LOGGED_OUT, etc.



It may take a little getting used to working with states, but once you do, you never come back. :-)

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