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| 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 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 | 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x | import { AfterViewInit, ChangeDetectionStrategy, Component, EventEmitter, HostBinding, inject, Output, ViewChild } from '@angular/core';
import { FormControl } from '@angular/forms';
import { MatInput } from '@angular/material/input';
import { Data, Route, Router, Routes } from '@angular/router';
import { BehaviorSubject, combineLatest, defer, forkJoin, from, map, of, startWith, switchMap } from 'rxjs';
interface ISearchOptions {
name: string;
icon?: string;
value: string;
routerLink: string;
isActive(): ReturnType<Router['isActive']>;
}
interface IParsedRoute {
path: string;
outlet?: string;
data?: Data;
}
@Component({
selector: 'app-search',
templateUrl: './search.component.html',
styleUrls: ['./search.component.scss'],
changeDetection: ChangeDetectionStrategy.OnPush,
standalone: false,
})
export class AppSearchComponent implements AfterViewInit {
private readonly router = inject(Router);
@HostBinding('class.density-3') public density = true;
/** The autocomplete input. */
@ViewChild(MatInput) public matInput!: MatInput;
/** Event emitter to notify the parent component that an option has been selected. */
@Output() public readonly optionSelected = new EventEmitter<void>();
/** The autocomplete input form control. */
public control = new FormControl('', { nonNullable: true });
/** The search options state. */
private readonly optionsSubject = new BehaviorSubject<ISearchOptions[]>([]);
/** The options value for the autocomplete. */
public readonly filteredOptions = combineLatest([this.control.valueChanges.pipe(startWith('')), this.optionsSubject.asObservable()]).pipe(
map(([value, options]) =>
options.filter(item => {
const searchTerm = value.toLowerCase();
return item.name.toLowerCase().includes(searchTerm) || item.value.toLowerCase().includes(searchTerm);
}),
),
);
constructor() {
void this.getOptions().subscribe();
}
/**
* Search options getter.
* @returns search options
*/
private getOptions() {
return of(this.router.config).pipe(
switchMap(routes => {
const r = routes.flatMap(item => (typeof item.outlet !== 'undefined' ? of([]) : defer(() => from(this.parseRoute(item)))));
return forkJoin(r);
}),
map(routes => {
const options = routes
.flat(1)
.filter(
route =>
/** Routes with empty paths that do not have Router data defining a feature are ignored by the application global search. */
(route.path !== '' || (route.path === '' && typeof route.data !== 'undefined' && 'feature' in route.data)) &&
/** Routes that defined redirects are ignored by the application global search. */
!route.path.includes('*') &&
/** Routes that require path parameters are ignored by the application global search. */
!route.path.includes(':') &&
/** Routes with defined outlets are ignored by the application global search. */
typeof route.outlet === 'undefined' &&
/** PWA offline route is ignored by the application global search. */
route.path !== 'offline',
)
.map(route => {
const data = route.data;
const feature = typeof data?.['feature'] === 'string' && data['feature'].length > 0 ? data['feature'] : route.path;
const name =
typeof data?.['title'] === 'string' && data['title'].length > 0
? data['title']
: `${feature.slice(0, 1).toUpperCase()}${feature.slice(1, feature.length)}`;
return {
name,
value: route.path,
icon: route.data?.['icon'],
routerLink: route.path.replace(/\s/g, '/'),
isActive: () =>
this.router.isActive(route.path, {
matrixParams: 'ignored',
queryParams: 'ignored',
paths: 'exact',
fragment: 'ignored',
}),
};
});
this.optionsSubject.next(options);
return options;
}),
);
}
/**
* Child route configuration parser.
* @param root root path / parent path
* @param data root path data / parent path data
* @param outlet router outlet for the given route
* @param routes child routes
* @returns the array with routes, route segment separator is space
*/
private parseChildRoutes(root = '', data?: Data, outlet?: string, routes?: Routes): IParsedRoute[] {
return typeof routes === 'undefined'
? [{ path: root.trim(), data, outlet }]
: routes.flatMap(child => {
const childPath = `${root} ${child.path}`.trim();
const childData = child.data;
const childOutlet = child.outlet;
return this.parseChildRoutes(childPath, childData, childOutlet, child.children);
});
}
/**
* Router configuration parser.
* @param root root route
* @returns the array with routes, route segment separator is space
*/
private async parseRoute(root: Route): Promise<IParsedRoute[]> {
const route = { ...root };
const rootPath = (route.path ?? '').trim();
const result: IParsedRoute[] = [{ path: rootPath, data: root.data, outlet: route.outlet }];
let children: Routes = route.children ?? [];
if (children.length === 0 && typeof route.loadChildren !== 'undefined') {
await route.loadChildren();
const loadedRoutes = (route as Route & Record<'_loadedRoutes' | string, Route['children']>)['_loadedRoutes'];
children = typeof loadedRoutes !== 'undefined' ? [...loadedRoutes] : children;
}
const resolvers = children.flatMap(async child => {
const childPath = `${rootPath} ${child.path}`.trim();
const childData = child.data;
const childOutlet = child.outlet;
const expandRoutes = this.parseChildRoutes(childPath, childData, childOutlet, child.children);
result.push(...expandRoutes);
return result;
});
if (typeof resolvers !== 'undefined') {
await Promise.all(resolvers);
}
return result.reduce((accumulator: IParsedRoute[], record) => {
const exists = accumulator.findIndex(item => item.path === record.path);
if (exists === -1) {
accumulator.push(record);
}
return accumulator;
}, []);
}
/**
* Select option handler.
* @param routerLink the option's router link
*/
public selectOption(routerLink: string) {
this.optionSelected.emit();
void this.router.navigate([routerLink]);
}
public ngAfterViewInit(): void {
setTimeout(() => {
this.matInput.focus();
});
}
}
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