Feature request about gtkreactive.jl HOT 5 CLOSED

Sounds cool. If you have some code that gets started and submit it as a PR, I'd be happy to advise on how to finish it off.

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Your "silly" approach may not be so silly: http://stackoverflow.com/questions/41598292/gtk-time-picker-widget

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Alas, now I really wish I could get that orientation glitch to work for the spinbutton I "made"... The vertical orientation really makes sense in this context.

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So while life does go on, one feature the above solution lacks is a single Instant behind the three widgets (in the specific case of hours:minutes:seconds, but everything here can be extended to any combination and number of temporal units). What I mean is that the 3 widgets should affect a single Instant, that then should parse into the 3 temporal units, and finally update the displays on the 3 widgets.
This structure would result in nifty behaviors such as:

1. Scrolling up (in the, say, vertical orientation) in the seconds widget, all the way up to "60", and then it will magically nullify and the minutes widget will go up one unit (potentially affecting the hours widget). And vice versa (scrolling down).
2. In addition, this structure prohibits any impossible temporal combinations (e.g. -33:68:172) in a simpler way than limiting the scroll to 0--59. This is especially cool if the user wants to include dates (think about the 31 of February).
3. Not to get ahead of myself, but this could (easily?) be extended to other units, such as tons:kg:grams.

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Sheesh, I tried to just use existing spinbutton widgets, but I'm running into (obvious) chicken-and-the-egg problems: updating one of the three widgets (hh:mm:ss) updates the main time, which update all three widgets sequentially, which then goes into an infinite loop...
I guess I should attempt to write a whole new type (like Player) and use all the basic Gtk functions...

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