fix(simple-combo): Focus on programmatically closing combo #16806
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valadzhov
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Pull request overview
This pull request fixes a critical performance issue (issue #16664) where repeatedly clicking between multiple igx-simple-combo components caused CPU usage to increase and eventually freeze the browser. The root cause was a focus loop introduced in PR #12170, where the combo input was always refocused when the dropdown closed, even when the close was triggered by user interaction (like clicking on another combo).
Changes:
- Modified the
dropdown.closingevent handler to only callthis.comboInput.focus()when the combo is closed programmatically (when!args.event), preventing focus loops when users click between multiple combos - Added an explanatory comment documenting why focus is only applied for programmatic closes
projects/igniteui-angular/simple-combo/src/simple-combo/simple-combo.component.ts
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Hristo313
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💥 status: in-test
Hristo313
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✅ status: verified
Hristo313
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Jan 28, 2026
projects/igniteui-angular/simple-combo/src/simple-combo/simple-combo.component.spec.ts
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…-combo.component.spec.ts Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>
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Closes #16664
Only a programmatically closing combo should be focused. Initially it was like that but this PR forces
this.comboInput.focus();in both cases - when it's closed programmatically and due to user interaction:#12170