Press n or j to go to the next uncovered block, b, p or k for the previous block.
| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 | 1x 97x 97x 1x 240x 240x 233x 19x 17x 17x 17x 17x 17x | import { Injectable } from '@angular/core';
/**
* A registry for each WvrBaseComponent currently present on the page.
*/
@Injectable({
providedIn: 'root'
})
export class ComponentRegistryService<T> {
/** Incrementing index of all registered components. */
private index = -1;
/** Registry for all WvrBaseComponent. */
private readonly registry: Map<number | string, T> = new Map<number, T>();
/** A statically accessible reference to the prefix used in deriving the HTML identifier. */
static readonly HTML_ID_BASE = 'wvr-component';
/** Adds a WvrBaseComponent to the registry. */
register(component: T): number {
// tslint:disable-next-line:increment-decrement
this.registry.set(++this.index, component);
return this.index;
}
/** Removes a WvrBaseComponent from the registry. */
unRegisterComponent(id: number | string): void {
this.registry.delete(id);
}
/** Retrieves a WvrBaseComponent from the registry. */
getComponent(id: number | string): T {
return this.registry.get(id);
}
/** Retrieves a WvrBaseComponent from the registry by HTMLElement. */
getComponentByElement(element: HTMLElement): T {
const hasNativeId = element.hasAttribute('wvr-id');
const htmlID = hasNativeId ? element.getAttribute('wvr-id') : element.getAttribute('id');
Iif (!htmlID) {
return undefined;
}
const id = parseInt(htmlID.replace(`${ComponentRegistryService.HTML_ID_BASE}-`, ''), 10);
return this.getComponent(id);
}
}
|