QuickAccessDialog: defer built-in provider construction until first use#3973
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Marking as draft so it is clear that this is NOT planned for 4.40 (it is planned for 4.41) |
Wrap the nine built-in providers in a LazyQuickAccessProvider that exposes the id and requiresUiAccess flag as static metadata and resolves the delegate only on the first getElements/findElement call, so closing the dialog without typing skips constructing them entirely. Marginally helps stabilize QuickAccessDialogTest.testPreviousChoicesAvailableForExtension on Windows by reducing constructor work and the resulting initial-layout resize events that can preempt the compute job.
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The dialog constructor previously instantiated all nine built-in providers (Editor, View, Perspective, Command, Action, Wizard, Preference, Properties, HelpSearch) eagerly inside the open-time BusyIndicator, even when the user closed the dialog without typing. This wraps each in a LazyQuickAccessProvider that exposes the provider id and requiresUiAccess flag as static metadata and resolves the delegate only on the first getElements/findElement call, so identity and threading queries during dialog setup do not force construction.
As a side benefit, it should marginally help stabilize QuickAccessDialogTest.testPreviousChoicesAvailableForExtension on Windows by reducing constructor work and the initial-layout shell resize events that can preempt the compute job.