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