35 lines
		
	
	
		
			832 B
		
	
	
	
		
			TypeScript
		
	
	
	
	
	
			
		
		
	
	
			35 lines
		
	
	
		
			832 B
		
	
	
	
		
			TypeScript
		
	
	
	
	
	
| /* tslint:disable:no-unused-variable */
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| // #docregion
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| import { Directive, ElementRef, HostListener, Input, Renderer } 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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| 
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| export class HighlightDirective {
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|   // #docregion ctor
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|   constructor(private el: ElementRef, private renderer: Renderer) { }
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|   // #enddocregion ctor
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| 
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|   // #docregion mouse-methods, host
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|   @HostListener('mouseenter') onMouseEnter() {
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|     // #enddocregion host
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|     this.highlight('yellow');
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|     // #docregion host
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|   }
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| 
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|   @HostListener('mouseleave') onMouseLeave() {
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|     // #enddocregion host
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|     this.highlight(null);
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|     // #docregion host
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|   }
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|   // #enddocregion host
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| 
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|   private highlight(color: string) {
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|     this.renderer.setElementStyle(this.el.nativeElement, 'backgroundColor', color);
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|   }
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|   // #enddocregion mouse-methods
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| 
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| }
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| // #enddocregion
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