28 lines
		
	
	
		
			638 B
		
	
	
	
		
			TypeScript
		
	
	
	
	
	
			
		
		
	
	
			28 lines
		
	
	
		
			638 B
		
	
	
	
		
			TypeScript
		
	
	
	
	
	
| /* tslint:disable:member-ordering */
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| // #docregion
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| import { Directive, ElementRef, HostListener, Input } from '@angular/core';
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| 
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| @Directive({
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|   selector: '[myHighlight]'
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| })
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| export class HighlightDirective {
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| 
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|   constructor(private el: ElementRef) { }
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| 
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|   @Input('myHighlight') highlightColor: string;
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| 
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|   // #docregion mouse-enter
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|   @HostListener('mouseenter') onMouseEnter() {
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|     this.highlight(this.highlightColor || 'red');
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|   }
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|   // #enddocregion mouse-enter
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| 
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|   @HostListener('mouseleave') onMouseLeave() {
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|     this.highlight(null);
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|   }
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| 
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|   private highlight(color: string) {
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|     this.el.nativeElement.style.backgroundColor = color;
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|   }
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| }
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