@coreui/angular
Version:
CoreUI Components Library for Angular
119 lines • 14.7 kB
JavaScript
import { ContentChildren, DestroyRef, Directive, ElementRef, forwardRef, HostBinding, HostListener, inject, Input } from '@angular/core';
import { FocusKeyManager } from '@angular/cdk/a11y';
import { takeUntilDestroyed } from '@angular/core/rxjs-interop';
import { tap } from 'rxjs/operators';
import { ThemeDirective } from '../../shared/theme.directive';
import { DropdownService } from '../dropdown.service';
import { DropdownItemDirective } from '../dropdown-item/dropdown-item.directive';
import * as i0 from "@angular/core";
import * as i1 from "../../shared/theme.directive";
export class DropdownMenuDirective {
constructor() {
this.#destroyRef = inject(DestroyRef);
this.elementRef = inject(ElementRef);
this.#dropdownService = inject(DropdownService);
/**
* Toggle the visibility of dropdown menu component.
* @type boolean
*/
this.visible = false;
}
#destroyRef;
#dropdownService;
#focusKeyManager;
get hostClasses() {
return {
'dropdown-menu': true,
[`dropdown-menu-${this.alignment}`]: !!this.alignment,
show: this.visible
};
}
get hostStyles() {
// workaround for popper position calculate (see also: dropdown.component)
return {
visibility: this.visible ? null : '',
display: this.visible ? null : ''
};
}
onKeyDown($event) {
if (!this.visible) {
return;
}
if (['Space', 'ArrowDown'].includes($event.code)) {
$event.preventDefault();
}
this.#focusKeyManager.onKeydown($event);
}
onKeyUp($event) {
if (!this.visible) {
return;
}
if (['Tab'].includes($event.key)) {
if (this.#focusKeyManager.activeItem) {
$event.shiftKey ? this.#focusKeyManager.setPreviousItemActive() : this.#focusKeyManager.setNextItemActive();
}
else {
this.#focusKeyManager.setFirstItemActive();
}
}
}
ngAfterContentInit() {
this.focusKeyManagerInit();
this.dropdownItemsContent.changes
.pipe(tap((change) => {
this.focusKeyManagerInit();
}), takeUntilDestroyed(this.#destroyRef))
.subscribe();
}
ngOnInit() {
this.#dropdownService.dropdownState$
.pipe(tap((state) => {
if ('visible' in state) {
this.visible = state.visible === 'toggle' ? !this.visible : state.visible;
if (!this.visible) {
this.#focusKeyManager?.setActiveItem(-1);
}
}
}), takeUntilDestroyed(this.#destroyRef))
.subscribe();
}
focusKeyManagerInit() {
this.#focusKeyManager = new FocusKeyManager(this.dropdownItemsContent)
.withHomeAndEnd()
.withPageUpDown()
.withWrap()
.skipPredicate((dropdownItem) => dropdownItem.disabled === true);
}
static { this.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: "12.0.0", version: "18.2.12", ngImport: i0, type: DropdownMenuDirective, deps: [], target: i0.ɵɵFactoryTarget.Directive }); }
static { this.ɵdir = i0.ɵɵngDeclareDirective({ minVersion: "14.0.0", version: "18.2.12", type: DropdownMenuDirective, isStandalone: true, selector: "[cDropdownMenu]", inputs: { alignment: "alignment", visible: "visible" }, host: { listeners: { "keydown": "onKeyDown($event)", "keyup": "onKeyUp($event)" }, properties: { "class": "this.hostClasses", "style": "this.hostStyles" }, classAttribute: "dropdown-menu" }, queries: [{ propertyName: "dropdownItemsContent", predicate: i0.forwardRef(() => DropdownItemDirective), descendants: true }], exportAs: ["cDropdownMenu"], hostDirectives: [{ directive: i1.ThemeDirective, inputs: ["dark", "dark"] }], ngImport: i0 }); }
}
i0.ɵɵngDeclareClassMetadata({ minVersion: "12.0.0", version: "18.2.12", ngImport: i0, type: DropdownMenuDirective, decorators: [{
type: Directive,
args: [{
selector: '[cDropdownMenu]',
exportAs: 'cDropdownMenu',
standalone: true,
hostDirectives: [{ directive: ThemeDirective, inputs: ['dark'] }],
host: { class: 'dropdown-menu' }
}]
}], propDecorators: { alignment: [{
type: Input
}], visible: [{
type: Input
}], hostClasses: [{
type: HostBinding,
args: ['class']
}], hostStyles: [{
type: HostBinding,
args: ['style']
}], onKeyDown: [{
type: HostListener,
args: ['keydown', ['$event']]
}], onKeyUp: [{
type: HostListener,
args: ['keyup', ['$event']]
}], dropdownItemsContent: [{
type: ContentChildren,
args: [forwardRef(() => DropdownItemDirective), { descendants: true }]
}] } });
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{\n  AfterContentInit,\n  ContentChildren,\n  DestroyRef,\n  Directive,\n  ElementRef,\n  forwardRef,\n  HostBinding,\n  HostListener,\n  inject,\n  Input,\n  OnInit,\n  QueryList\n} from '@angular/core';\nimport { FocusKeyManager } from '@angular/cdk/a11y';\nimport { takeUntilDestroyed } from '@angular/core/rxjs-interop';\nimport { tap } from 'rxjs/operators';\n\nimport { ThemeDirective } from '../../shared/theme.directive';\nimport { DropdownService } from '../dropdown.service';\nimport { DropdownItemDirective } from '../dropdown-item/dropdown-item.directive';\n\n@Directive({\n  selector: '[cDropdownMenu]',\n  exportAs: 'cDropdownMenu',\n  standalone: true,\n  hostDirectives: [{ directive: ThemeDirective, inputs: ['dark'] }],\n  host: { class: 'dropdown-menu' }\n})\nexport class DropdownMenuDirective implements OnInit, AfterContentInit {\n  readonly #destroyRef: DestroyRef = inject(DestroyRef);\n  public readonly elementRef: ElementRef = inject(ElementRef);\n  readonly #dropdownService: DropdownService = inject(DropdownService);\n  #focusKeyManager!: FocusKeyManager<DropdownItemDirective>;\n\n  /**\n   * Set alignment of dropdown menu.\n   * @type {'start' | 'end' }\n   */\n  @Input() alignment?: 'start' | 'end' | string;\n\n  /**\n   * Toggle the visibility of dropdown menu component.\n   * @type boolean\n   */\n  @Input() visible: boolean = false;\n\n  @HostBinding('class')\n  get hostClasses(): any {\n    return {\n      'dropdown-menu': true,\n      [`dropdown-menu-${this.alignment}`]: !!this.alignment,\n      show: this.visible\n    };\n  }\n\n  @HostBinding('style') get hostStyles() {\n    // workaround for popper position calculate (see also: dropdown.component)\n    return {\n      visibility: this.visible ? null : '',\n      display: this.visible ? null : ''\n    };\n  }\n\n  @HostListener('keydown', ['$event']) onKeyDown($event: KeyboardEvent): void {\n    if (!this.visible) {\n      return;\n    }\n    if (['Space', 'ArrowDown'].includes($event.code)) {\n      $event.preventDefault();\n    }\n    this.#focusKeyManager.onKeydown($event);\n  }\n\n  @HostListener('keyup', ['$event']) onKeyUp($event: KeyboardEvent): void {\n    if (!this.visible) {\n      return;\n    }\n    if (['Tab'].includes($event.key)) {\n      if (this.#focusKeyManager.activeItem) {\n        $event.shiftKey ? this.#focusKeyManager.setPreviousItemActive() : this.#focusKeyManager.setNextItemActive();\n      } else {\n        this.#focusKeyManager.setFirstItemActive();\n      }\n    }\n  }\n\n  @ContentChildren(forwardRef(() => DropdownItemDirective), { descendants: true })\n  dropdownItemsContent!: QueryList<DropdownItemDirective>;\n\n  ngAfterContentInit(): void {\n    this.focusKeyManagerInit();\n\n    this.dropdownItemsContent.changes\n      .pipe(\n        tap((change) => {\n          this.focusKeyManagerInit();\n        }),\n        takeUntilDestroyed(this.#destroyRef)\n      )\n      .subscribe();\n  }\n\n  ngOnInit(): void {\n    this.#dropdownService.dropdownState$\n      .pipe(\n        tap((state) => {\n          if ('visible' in state) {\n            this.visible = state.visible === 'toggle' ? !this.visible : state.visible;\n            if (!this.visible) {\n              this.#focusKeyManager?.setActiveItem(-1);\n            }\n          }\n        }),\n        takeUntilDestroyed(this.#destroyRef)\n      )\n      .subscribe();\n  }\n\n  private focusKeyManagerInit(): void {\n    this.#focusKeyManager = new FocusKeyManager(this.dropdownItemsContent)\n      .withHomeAndEnd()\n      .withPageUpDown()\n      .withWrap()\n      .skipPredicate((dropdownItem) => dropdownItem.disabled === true);\n  }\n}\n"]}