26023601418

Committed 18 May 2026 08:57AM UTC coverage: 4.854% (-85.3%) from 90.174%

Build # 26023601418

Build Type

Pull #17281

github

Committed by

web-flow

Commit Message

Merge e7ce7a18e into 5a85df190

Pull Request Pull Request #17281: feat: Added virtual scroll component and sample implementation

Coverage Stats

400 of 17347 branches covered (2.31%)

Branch coverage included in aggregate %.

63 of 222 new or added lines in 4 files covered. (28.38%)

27932 existing lines in 341 files now uncovered.

2022 of 32547 relevant lines covered (6.21%)

0.72 hits per line

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0.0

/projects/igniteui-angular/virtual-scroll/src/virtual-scroll/types.ts

1	/**
2	* Context for the item template in the virtual scroll component.
3	* Provides the item data, its index, and utility properties for template rendering.
4	*/
5	export class IgxVsItemContext<T> {
6	constructor(
7	/** The current item in the virtual scroll. */
NEW 8	public $implicit: T,	×
9	/** The index of the current item. */
NEW 10	public index: number,	×
11	/** The total number of items in the virtual scroll. */
NEW 12	public count: number,	×
13	) {}
14
15	/** Whether the current item is the first in the list. */
16	public get first(): boolean {
NEW 17	return this.index === 0;	×
18	}
19
20	/** Whether the current item is the last in the list. */
21	public get last(): boolean {
NEW 22	return this.index === this.count - 1;	×
23	}
24
25	/** Whether the current item is at an even index. */
26	public get even(): boolean {
NEW 27	return this.index % 2 === 0;	×
28	}
29
30	/** Whether the current item is at an odd index. */
31	public get odd(): boolean {
NEW 32	return !this.even;	×
33	}
34	}
35
36	/**
37	* Snapshot of the currently rendered virtual window.
38	*/
39	export interface VirtualScrollState {
40	/** The index of the first item currently rendered in the viewport. */
41	startIndex: number;
42	/** The index of the last item currently rendered in the viewport (inclusive). */
43	endIndex: number;
44	/** The size of the viewport in pixels. */
45	viewportSize: number;
46	/** The total size of the virtual scroll content in pixels. */
47	totalSize: number;
48	}
49
50	/**
51	* Request for more data to be loaded in the virtual scroll, typically emitted when the user scrolls near the end of the currently loaded items.
52	* The consumer of the virtual scroll component can listen to this event and load more data as needed.
53	*/
54	export interface VirtualScrollDataRequest {
55	/**
56	* The first index that does not yet have data.
57	* Append at least `(endIndex - startIndex + 1)` more items starting here.
58	*/
59	startIndex: number;
60	/** Number of items being requested. */
61	count: number;
62	}

IgniteUI / igniteui-angular / 26023601418

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