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20 lines
784 B
20 lines
784 B
--- @meta
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--- The `backstack` module contains functions that can be used to implement a
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--- basic stack-based navigation hierarchy. See also the `screen` module, which
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--- provides a class prototype meant for use with this module.
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--- @class backstack
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local backstack = {}
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--- Displays the given screen to the user. If there was already a screen being
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--- displayed, then the current screen is removed from the display, and added
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--- to the backstack.
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--- @param screen screen The screen to display.
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function backstack.push(screen) end
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--- Removes the current screen from the display, then replaces it with the
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--- screen that is at the top of the backstack. This function does nothing if
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--- there are no other screens in the stack.
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function backstack.pop() end
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return backstack
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