(1.9 port) Fix a number of shutdown crashes in TermControl #10117
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1. The TSFInputControl may get a layout event after it has been removed
from service (and no longer has a XAML tree)
* Two fixes:
* first, guard the layour updater from accessing detached xaml
objects
* second, shut down all pending throttled functions during close
(not destruction!¹)
2. The TermControlAutomationPeer may be destructed before its events
fire.
3. The TermControlAutomationPeer may receive a notification after it has
been detached from XAML (and therefore has no dispatcher).
¹ Close happens before the control is removed from the XAML tree;
destruction happens some time later. We must detach all UI-bound events
in Close so that they don't fire between when we detach and when we
destruct.
Fixes MSFT-32496693
Fixes MSFT-32496158
Fixes MSFT-32509759
Fixes MSFT-32871913
(cherry picked from commit 661fde5)
zadjii-msft
approved these changes
May 17, 2021
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These changes were largely reviewed already, so I'm going to mark this one for inclusion. Thanks! |
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from service (and no longer has a XAML tree)
objects
(not destruction!¹)
fire.
been detached from XAML (and therefore has no dispatcher).
¹ Close happens before the control is removed from the XAML tree;
destruction happens some time later. We must detach all UI-bound events
in Close so that they don't fire between when we detach and when we
destruct.
Fixes MSFT-32496693
Fixes MSFT-32496158
Fixes MSFT-32509759
Fixes MSFT-32871913
(cherry picked from commit 661fde5)