fix(for-of): guard resize observer against non-element nodes - 21.2.x - #17529
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fix(for-of): guard resize observer against non-element nodes - 21.2.x#17529viktorkombov wants to merge 1 commit into
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Pull request overview
This PR fixes virtualization crashes caused by invalid ResizeObserver targets.
Changes:
- Adds safe observed-node resolution and null guards.
- Updates grid view observation and adds unit tests.
Reviewed changes
Copilot reviewed 2 out of 2 changed files in this pull request and generated 1 comment.
| File | Description |
|---|---|
| projects/igniteui-angular/directives/src/directives/for-of/for_of.directive.ts | Updated as part of this pull request. |
| projects/igniteui-angular/directives/src/directives/for-of/for_of.directive.spec.ts | Updated as part of this pull request. |
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| this._embeddedViews.push(embeddedView); | ||
| this.subscribeToViewObserver(embeddedView.rootNodes.find(node => node.nodeType === Node.ELEMENT_NODE) || embeddedView.rootNodes[0].nextElementSibling); | ||
| this.subscribeToViewObserver(this.getViewObservedNode(embeddedView)); |
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Closes #17482
Description
removeLastElem()could callResizeObserver.unobserve()withnulland throw, which left the virtualization half torn down. Same unguarded lookup was used on theobserve()side, so both now go through one helper that returnsnullwhen there's no element, and the calls are skipped in that case.Motivation / Context
Type of Change (check all that apply):
Component(s) / Area(s) Affected:
How Has This Been Tested?
Test Configuration:
Screenshots / Recordings
Checklist:
feature/README.MDupdates for the feature docsREADME.MDCHANGELOG.MDupdates for newly added functionalityng updatemigrations for the breaking changes (migrations guidelines)