fix(a11y): focus trap incorrectly moving focus internally if focus was already moved into it #18541
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…s already moved into it The new `ConfigurableFocusTrap` uses a timeout to allow for focus to be moved before it traps focus into itself, however if focus was moved into it before the timeout has fired, focus will be incorrectly moved to the first element in the trap. These changes add an extra check that ensures that focus isn't moved again if it's already inside the trap. Relates to angular#18538.
crisbeto
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cla: yes
jelbourn
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pr: lgtm
action: merge
devversion
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Feb 18, 2020
andrewseguin
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target: minor
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The new
ConfigurableFocusTrapuses a timeout to allow for focus to be moved before it traps focus into itself, however if focus was moved into it before the timeout has fired, focus will be incorrectly moved to the first element in the trap. These changes add an extra check that ensures that focus isn't moved again if it's already inside the trap.Relates to #18538.