28851216392

Committed 07 Jul 2026 08:05AM UTC coverage: 98.329% (-0.006%) from 98.335%

Build # 28851216392

Build Type

Pull #2222

github

Committed by

web-flow

Commit Message

Merge e23869691 into fcab913eb

Pull Request Pull Request #2222: feat: Added virtualization component

Coverage Stats

6063 of 6378 branches covered (95.06%)

Branch coverage included in aggregate %.

854 of 864 new or added lines in 6 files covered. (98.84%)

8 existing lines in 1 file now uncovered.

42835 of 43351 relevant lines covered (98.81%)

1556.78 hits per line

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92.73

/src/components/virtualization/types.ts

/**
 * Context for the item template in the virtual scroll component.
 * Provides the item data, its index, and utility properties for template rendering.
 */
export class VirtualScrollItemContext<T> {
  /** The current item in the virtual scroll */
  public value: T;
  /** The index of the current item */
  public index: number;
  /** The total number of items */
  public count: number;

  constructor(value: T, index: number, count: number) {
    this.value = value;
    this.index = index;
    this.count = count;
  }

  /** Whether the current item is the first item */
  public get isFirst(): boolean {
    return this.index === 0;
  }

  /** Whether the current item is the last item */
  public get isLast(): boolean {
    return this.index === this.count - 1;
  }
}

/** Snapshot of the currently rendered virtual window */
export interface VirtualScrollState {
  /** The index of the first item currently rendered in the viewport. */
  startIndex: number;
  /** The index of the last item currently rendered in the viewport (inclusive). */
  endIndex: number;
  /** The size of the viewport in pixels. */
  viewportSize: number;
  /** The total size of the virtual scroll content in pixels. */
  totalSize: number;
}

/**
 * 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.
 * The consumer of the virtual scroll component can listen to this event and load more data as needed.
 */
export interface VirtualScrollDataRequest {
  /**
   * The first index that does not yet have data.
   * Append at least `(endIndex - startIndex + 1)` more items starting here.
   */
  startIndex: number;
  /** Number of items being requested. */
  count: number;
}

1	/**	9✔
2	* Context for the item template in the virtual scroll component.	9✔
3	* Provides the item data, its index, and utility properties for template rendering.	9✔
4	*/	9✔
5	export class VirtualScrollItemContext<T> {	9✔
6	/** The current item in the virtual scroll */	9✔
7	public value: T;	9✔
8	/** The index of the current item */	9✔
9	public index: number;	9✔
10	/** The total number of items */	9✔
11	public count: number;	9✔
12		9✔
13	constructor(value: T, index: number, count: number) {	9✔
14	this.value = value;	1,606✔
15	this.index = index;	1,606✔
16	this.count = count;	1,606✔
17	}	1,606✔
18		9✔
19	/** Whether the current item is the first item */	9✔
20	public get isFirst(): boolean {	9✔
NEW 21	return this.index === 0;	×
NEW 22	}	×
23		9✔
24	/** Whether the current item is the last item */	9✔
25	public get isLast(): boolean {	9✔
NEW 26	return this.index === this.count - 1;	×
NEW 27	}	×
28	}	9✔
29		9✔
30	/** Snapshot of the currently rendered virtual window */	9✔
31	export interface VirtualScrollState {	9✔
32	/** The index of the first item currently rendered in the viewport. */	9✔
33	startIndex: number;	9✔
34	/** The index of the last item currently rendered in the viewport (inclusive). */	9✔
35	endIndex: number;	9✔
36	/** The size of the viewport in pixels. */	9✔
37	viewportSize: number;	9✔
38	/** The total size of the virtual scroll content in pixels. */	9✔
39	totalSize: number;	9✔
40	}	9✔
41		9✔
42	/**	9✔
43	* 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.	9✔
44	* The consumer of the virtual scroll component can listen to this event and load more data as needed.	9✔
45	*/	9✔
46	export interface VirtualScrollDataRequest {	9✔
47	/**	9✔
48	* The first index that does not yet have data.	9✔
49	* Append at least `(endIndex - startIndex + 1)` more items starting here.	9✔
50	*/	9✔
51	startIndex: number;	9✔
52	/** Number of items being requested. */	9✔
53	count: number;	9✔
54	}	9✔

IgniteUI / igniteui-webcomponents / 28851216392

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