angular-cn/public/docs/_examples/lifecycle-hooks/ts/app/logger.service.ts

30 lines
642 B
TypeScript

import {Injectable} from 'angular2/core';
@Injectable()
export class LoggerService {
logs:string[] = [];
prevMsg = '';
prevMsgCount = 1;
log(msg:string) {
if (msg === this.prevMsg) {
// Repeat message; update last log entry with count.
this.logs[this.logs.length-1] = msg + ` (${this.prevMsgCount+=1}x)`;
} else {
// New message; log it.
this.prevMsg = msg;
this.prevMsgCount = 1;
this.logs.push(msg);
}
}
clear() {this.logs.length = 0;}
// schedules a view refresh to ensure display catches up
tick() {
setTimeout(() => {
// console.log('tick')
}, 0);
}
}