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1 | import { Component, Input, OnDestroy, OnInit } from '@angular/core' |
2 | import { filter, take } from 'rxjs/operators' | |
80bfd33c | 3 | import { NavigationEnd, Router } from '@angular/router' |
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4 | import { Subscription } from 'rxjs' |
5 | import { NgbDropdown } from '@ng-bootstrap/ng-bootstrap' | |
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6 | |
7 | export type TopMenuDropdownParam = { | |
8 | label: string | |
9 | routerLink?: string | |
10 | ||
11 | children?: { | |
12 | label: string | |
13 | routerLink: string | |
14 | }[] | |
15 | } | |
16 | ||
17 | @Component({ | |
18 | selector: 'my-top-menu-dropdown', | |
19 | templateUrl: './top-menu-dropdown.component.html', | |
20 | styleUrls: [ './top-menu-dropdown.component.scss' ] | |
21 | }) | |
22 | export class TopMenuDropdownComponent implements OnInit, OnDestroy { | |
23 | @Input() menuEntries: TopMenuDropdownParam[] = [] | |
24 | ||
25 | suffixLabels: { [ parentLabel: string ]: string } | |
26 | ||
27 | private openedOnHover = false | |
28 | private routeSub: Subscription | |
29 | ||
30 | constructor (private router: Router) {} | |
31 | ||
32 | ngOnInit () { | |
33 | this.updateChildLabels(window.location.pathname) | |
34 | ||
35 | this.routeSub = this.router.events | |
80bfd33c | 36 | .pipe(filter(event => event instanceof NavigationEnd)) |
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37 | .subscribe(() => this.updateChildLabels(window.location.pathname)) |
38 | } | |
39 | ||
40 | ngOnDestroy () { | |
41 | if (this.routeSub) this.routeSub.unsubscribe() | |
42 | } | |
43 | ||
44 | openDropdownOnHover (dropdown: NgbDropdown) { | |
45 | this.openedOnHover = true | |
46 | dropdown.open() | |
47 | ||
48 | // Menu was closed | |
49 | dropdown.openChange | |
50 | .pipe(take(1)) | |
51 | .subscribe(e => this.openedOnHover = false) | |
52 | } | |
53 | ||
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54 | dropdownAnchorClicked (dropdown: NgbDropdown) { |
55 | if (this.openedOnHover) { | |
56 | this.openedOnHover = false | |
57 | return | |
58 | } | |
59 | ||
60 | return dropdown.toggle() | |
61 | } | |
62 | ||
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63 | closeDropdownIfHovered (dropdown: NgbDropdown) { |
64 | if (this.openedOnHover === false) return | |
65 | ||
66 | dropdown.close() | |
67 | this.openedOnHover = false | |
68 | } | |
69 | ||
70 | private updateChildLabels (path: string) { | |
71 | this.suffixLabels = {} | |
72 | ||
73 | for (const entry of this.menuEntries) { | |
74 | if (!entry.children) continue | |
75 | ||
76 | for (const child of entry.children) { | |
77 | if (path.startsWith(child.routerLink)) { | |
78 | this.suffixLabels[entry.label] = child.label | |
79 | } | |
80 | } | |
81 | } | |
82 | } | |
83 | } |