fix(for-of): correct virtualized sizing for bordered lists - 22.0.x - #17495
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viktorkombov wants to merge 2 commits into
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fix(for-of): correct virtualized sizing for bordered lists - 22.0.x#17495viktorkombov wants to merge 2 commits into
viktorkombov wants to merge 2 commits into
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Pull request overview
Fixes virtualization sizing edge-cases when borders are present, ensuring igxFor measurements include item borders (in addition to margins) and the Excel-style filtering list uses the correct inner viewport height so the last item isn’t clipped by container borders.
Changes:
- Update
IgxForOfDirectivenode size measurement to include element borders alongside margins. - Adjust Excel-style filtering list virtualization to use the list’s
clientHeight(content box) rather thanoffsetHeight(border box). - Add regression tests covering bordered item sizing (vertical/horizontal) and the Excel-style filtering viewport sizing.
Reviewed changes
Copilot reviewed 4 out of 4 changed files in this pull request and generated 2 comments.
| File | Description |
|---|---|
| projects/igniteui-angular/grids/grid/src/grid-filtering-ui.spec.ts | Adds a regression test asserting Excel-style filtering virtualization uses the list content height as its container size. |
| projects/igniteui-angular/grids/core/src/filtering/excel-style/excel-style-search.component.ts | Switches virtualization containerSize measurement from offsetHeight to clientHeight to avoid border-induced clipping. |
| projects/igniteui-angular/directives/src/directives/for-of/for_of.directive.ts | Updates virtual item sizing logic to include border widths in measured size. |
| projects/igniteui-angular/directives/src/directives/for-of/for_of.directive.spec.ts | Adds a unit test validating size calculations include both borders and margins for vertical and horizontal orientations. |
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| expect(listItems.length).toBe(6, 'incorrect rendered list items count'); | ||
| }); | ||
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|
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| it('Should use the list content height for the virtual container size', async () => { |
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| const dimension = this.igxForScrollOrientation === 'horizontal' ? | ||
| this.igxForSizePropName : 'height'; | ||
| const nodeSize = dimension === 'height' ? | ||
| rNode.clientHeight + this.getMargin(rNode, dimension): | ||
| rNode.clientWidth + this.getMargin(rNode, dimension); | ||
| rNode.clientHeight + this.getBorder(rNode, dimension) + this.getMargin(rNode, dimension): | ||
| rNode.clientWidth + this.getBorder(rNode, dimension) + this.getMargin(rNode, dimension); |
mddragnev
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✅ status: verified
mddragnev
approved these changes
Aug 13, 2026
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Closes #17490
Description
Fixes virtualized list sizing when item and container borders are present.
igxFornow includes item borders alongside margins when measuring rendereditems. The Excel-style filtering list uses its inner client height as the
virtual viewport, preventing its own borders from clipping the final item with
the Fluent theme.
Adds regression coverage for vertical and horizontal item sizing and the
Excel-style filtering viewport.
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)