OptionalactThe element to instantiate all actions on this trigger for.
The element on which the Trigger is defined
OptionaldelayDelay in milliseconds before doing, undoing or toggling actions.
OptionaldoDelay in milliseconds before doing actions.
OptionalidAn ID for the trigger so that it can be looked up by ID. It has to be unique for each element, but you can use the same ID on different elements.
The DeviceSpec or AspectRatioSpec to use. Required. See OnLayoutOptions for accepted formats.
Actions will be "done" when the layout of the root matches the given spec and "undone" otherwise.
OptionalonceIf true, the trigger will run at most once. This will result in the run
or toggle methods removing all three of run, reverse and toggle
when called, so that the actions are done at most once.
OptionaloneIf true, then the reverse method of the trigger will do nothing and the
toggle method will always do the actions, i.e. will be equivalent to
run.
OptionalrootThe root to use for the LayoutWatcher. See LayoutWatcherConfig
LayoutWatcher default, the viewport
OptionalundoDelay in milliseconds before undoing actions.