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import { Component, Input, OnDestroy, OnInit } from '@angular/core'
import { filter, take } from 'rxjs/operators'
import { NavigationEnd, Router } from '@angular/router'
import { Subscription } from 'rxjs'
import { NgbDropdown } from '@ng-bootstrap/ng-bootstrap'
import { GlobalIconName } from '@app/shared/images/global-icon.component'
import { ScreenService } from '@app/shared/misc/screen.service'
export type TopMenuDropdownParam = {
label: string
routerLink?: string
children?: {
label: string
routerLink: string
iconName?: GlobalIconName
}[]
}
@Component({
selector: 'my-top-menu-dropdown',
templateUrl: './top-menu-dropdown.component.html',
styleUrls: [ './top-menu-dropdown.component.scss' ]
})
export class TopMenuDropdownComponent implements OnInit, OnDestroy {
@Input() menuEntries: TopMenuDropdownParam[] = []
suffixLabels: { [ parentLabel: string ]: string }
hasIcons = false
container: undefined | 'body' = undefined
private openedOnHover = false
private routeSub: Subscription
constructor (
private router: Router,
private screen: ScreenService
) {}
ngOnInit () {
this.updateChildLabels(window.location.pathname)
this.routeSub = this.router.events
.pipe(filter(event => event instanceof NavigationEnd))
.subscribe(() => this.updateChildLabels(window.location.pathname))
this.hasIcons = this.menuEntries.some(
e => e.children && e.children.some(c => !!c.iconName)
)
// We have to set body for the container to avoid scroll overflow on mobile view
if (this.screen.isInMobileView()) {
this.container = 'body'
}
}
ngOnDestroy () {
if (this.routeSub) this.routeSub.unsubscribe()
}
openDropdownOnHover (dropdown: NgbDropdown) {
this.openedOnHover = true
dropdown.open()
// Menu was closed
dropdown.openChange
.pipe(take(1))
.subscribe(() => this.openedOnHover = false)
}
dropdownAnchorClicked (dropdown: NgbDropdown) {
if (this.openedOnHover) {
this.openedOnHover = false
return
}
return dropdown.toggle()
}
closeDropdownIfHovered (dropdown: NgbDropdown) {
if (this.openedOnHover === false) return
dropdown.close()
this.openedOnHover = false
}
private updateChildLabels (path: string) {
this.suffixLabels = {}
for (const entry of this.menuEntries) {
if (!entry.children) continue
for (const child of entry.children) {
if (path.startsWith(child.routerLink)) {
this.suffixLabels[entry.label] = child.label
}
}
}
}
}
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