1 import {Input, Output, EventEmitter, Directive} from '@angular/core';
2 import {NgbPopover} from '@ng-bootstrap/ng-bootstrap';
3 import {ContextMenuService, ContextMenu, ContextMenuEntry} from './context-menu.service';
6 /* Import all of this stuff so we can pass it to our parent
7 * class via its constructor */
9 Inject, Injector, Renderer2, ElementRef, TemplateRef, ViewContainerRef,
10 ComponentFactoryResolver, NgZone, ChangeDetectorRef, ApplicationRef
11 } from '@angular/core';
12 import {DOCUMENT} from '@angular/common';
13 import {NgbPopoverConfig} from '@ng-bootstrap/ng-bootstrap';
17 selector: '[egContextMenu]',
18 exportAs: 'egContextMenu'
20 export class ContextMenuDirective extends NgbPopover {
22 // Only one active menu is allowed at a time.
23 static activeDirective: ContextMenuDirective;
26 triggers = 'contextmenu';
27 popoverClass = 'eg-context-menu';
29 menuEntries: ContextMenuEntry[] = [];
32 @Input() set egContextMenu(menuEntries: ContextMenuEntry[]) {
33 this.menuEntries = menuEntries;
36 @Output() menuItemSelected: EventEmitter<ContextMenuEntry>;
39 p1: ElementRef<HTMLElement>, p2: Renderer2, p3: Injector,
40 p4: ComponentFactoryResolver, p5: ViewContainerRef, p6: NgbPopoverConfig,
41 p7: NgZone, @Inject(DOCUMENT) p8: any, p9: ChangeDetectorRef,
42 p10: ApplicationRef, private menuService: ContextMenuService) {
44 // relay injected services to parent
45 super(p1, p2, p3, p4, p5, p6, p7, p8, p9, p10);
47 this.menuItemSelected = new EventEmitter<ContextMenuEntry>();
49 this.menuService.menuItemSelected.subscribe(
50 (entry: ContextMenuEntry) => {
52 // Only broadcast entry selection to my listeners if I'm
53 // hosting the menu where the selection occurred.
55 if (this.activeMenuIsMe()) {
56 this.menuItemSelected.emit(entry);
58 // Item selection via keyboard fails to close the menu.
65 activeMenuIsMe(): boolean {
68 this.menuService.activeMenu &&
69 this.menu.id === this.menuService.activeMenu.id
73 // Close the active menu
75 if (ContextMenuDirective.activeDirective) {
76 ContextMenuDirective.activeDirective.close();
77 ContextMenuDirective.activeDirective = null;
78 this.menuService.activeMenu = null;
84 // In certain scenarios (e.g. right-clicking on another context
85 // menu) an open popover will stay open. Force it closed here.
88 if (!this.menuEntries ||
89 this.menuEntries.length === 0) {
93 this.menu = new ContextMenu();
94 this.menu.id = ContextMenuDirective.menuId++;
95 this.menu.entries = this.menuEntries;
97 this.menuService.activeMenu = this.menu;
98 this.menuService.showMenuRequest.emit(this.menu);
99 this.ngbPopover = this.menuService.menuTemplate;
101 ContextMenuDirective.activeDirective = this;