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fix(cdk/tree): capturing focus on load #29641

Merged
merged 1 commit into from
Aug 26, 2024
Merged

fix(cdk/tree): capturing focus on load #29641

merged 1 commit into from
Aug 26, 2024

Commits on Aug 26, 2024

  1. fix(cdk/tree): capturing focus on load 

    The tree implements a roving tabindex which needs to have an initial item with `tabindex = 0` to work correctly. This happens by waiting for the data to be initialized in the `TreeKeyManager` and focusing the active/first item. The problem is that this ends up stealing focus on load. We didn't notice this issue in the demo app, because all the tree are `visibility: hidden` since they're inside closed `mat-expansion-panel`, but the issue is visible in the docs site.

These changes resolve the issue by setting the `tabindex` without actually moving focus.

Fixes angular#29628.
    @crisbeto
    crisbeto committed Aug 26, 2024
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