43 lines
1.6 KiB
TypeScript
43 lines
1.6 KiB
TypeScript
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import { Directive, Inject, Input, AfterContentInit } from 'ng-metadata/core';
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/**
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* Structural directive that adds/removes its host element if the given list of feature flags are set.
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* Utilizes the existing AngularJS ngIf directive by applying its 'link' function to the host element's properties.
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*
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* Inspired by http://stackoverflow.com/a/29010910
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*/
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@Directive({
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selector: '[quayRequire]',
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legacy: {
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transclude: 'element',
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}
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})
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export class QuayRequireDirective implements AfterContentInit {
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@Input('<quayRequire') public requiredFeatures: string[] = [];
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private ngIfDirective: ng.IDirective;
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constructor(@Inject('Features') private features: any,
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@Inject('$element') private $element: ng.IAugmentedJQuery,
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@Inject('$scope') private $scope: ng.IScope,
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@Inject('$transclude') private $transclude: ng.ITranscludeFunction,
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@Inject('ngIfDirective') ngIfDirective: ng.IDirective[]) {
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this.ngIfDirective = ngIfDirective[0];
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}
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public ngAfterContentInit(): void {
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const attrs: {[name: string]: () => boolean} = {'ngIf': () => this.features.matchesFeatures(this.requiredFeatures)};
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(<Function>this.ngIfDirective.link).apply(this.ngIfDirective,
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[
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this.$scope,
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this.$element,
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attrs,
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null,
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this.$transclude
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]);
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}
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}
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