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ddb83e49 C |
1 | import { Component, Input, OnDestroy, OnInit } from '@angular/core' |
2 | import { filter, take } from 'rxjs/operators' | |
3 | import { NavigationStart, Router } from '@angular/router' | |
4 | import { Subscription } from 'rxjs' | |
5 | import { NgbDropdown } from '@ng-bootstrap/ng-bootstrap' | |
6 | import { drop } from 'lodash-es' | |
7 | ||
8 | export type TopMenuDropdownParam = { | |
9 | label: string | |
10 | routerLink?: string | |
11 | ||
12 | children?: { | |
13 | label: string | |
14 | routerLink: string | |
15 | }[] | |
16 | } | |
17 | ||
18 | @Component({ | |
19 | selector: 'my-top-menu-dropdown', | |
20 | templateUrl: './top-menu-dropdown.component.html', | |
21 | styleUrls: [ './top-menu-dropdown.component.scss' ] | |
22 | }) | |
23 | export class TopMenuDropdownComponent implements OnInit, OnDestroy { | |
24 | @Input() menuEntries: TopMenuDropdownParam[] = [] | |
25 | ||
26 | suffixLabels: { [ parentLabel: string ]: string } | |
27 | ||
28 | private openedOnHover = false | |
29 | private routeSub: Subscription | |
30 | ||
31 | constructor (private router: Router) {} | |
32 | ||
33 | ngOnInit () { | |
34 | this.updateChildLabels(window.location.pathname) | |
35 | ||
36 | this.routeSub = this.router.events | |
37 | .pipe(filter(event => event instanceof NavigationStart)) | |
38 | .subscribe(() => this.updateChildLabels(window.location.pathname)) | |
39 | } | |
40 | ||
41 | ngOnDestroy () { | |
42 | if (this.routeSub) this.routeSub.unsubscribe() | |
43 | } | |
44 | ||
45 | openDropdownOnHover (dropdown: NgbDropdown) { | |
46 | this.openedOnHover = true | |
47 | dropdown.open() | |
48 | ||
49 | // Menu was closed | |
50 | dropdown.openChange | |
51 | .pipe(take(1)) | |
52 | .subscribe(e => this.openedOnHover = false) | |
53 | } | |
54 | ||
55 | closeDropdownIfHovered (dropdown: NgbDropdown) { | |
56 | if (this.openedOnHover === false) return | |
57 | ||
58 | dropdown.close() | |
59 | this.openedOnHover = false | |
60 | } | |
61 | ||
62 | private updateChildLabels (path: string) { | |
63 | this.suffixLabels = {} | |
64 | ||
65 | for (const entry of this.menuEntries) { | |
66 | if (!entry.children) continue | |
67 | ||
68 | for (const child of entry.children) { | |
69 | if (path.startsWith(child.routerLink)) { | |
70 | this.suffixLabels[entry.label] = child.label | |
71 | } | |
72 | } | |
73 | } | |
74 | } | |
75 | } |