31 lines
689 B
TypeScript
31 lines
689 B
TypeScript
// #docregion
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import {Directive, ElementRef, Input} from '@angular/core';
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@Directive({
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selector: '[myHighlight]',
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// #docregion host
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host: {
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'(mouseenter)': 'onMouseEnter()',
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'(mouseleave)': 'onMouseLeave()'
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}
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// #enddocregion host
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})
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export class HighlightDirective {
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// #docregion ctor
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private _el:HTMLElement;
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constructor(el: ElementRef) { this._el = el.nativeElement; }
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// #enddocregion ctor
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// #docregion mouse-methods
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onMouseEnter() { this._highlight("yellow"); }
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onMouseLeave() { this._highlight(null); }
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private _highlight(color: string) {
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this._el.style.backgroundColor = color;
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}
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// #enddocregion mouse-methods
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}
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// #enddocregion
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