-import {Component, OnInit} from '@angular/core';
-import {ModalService} from '../correlation-modal/modal.service';
-import {RuleModel} from './alarmRule';
-import {RuleRequest} from './ruleRequest';
-import {Router} from '@angular/router';
-import {AlarmRuleService} from './alarmRule.service';
+import { Component, OnInit, ElementRef } from '@angular/core';
+import { ModalService } from '../correlation-modal/modal.service';
+import { RuleModel } from './alarmRule';
+import { RuleRequest } from './ruleRequest';
+import { Router } from '@angular/router';
+import { AlarmRuleService } from './alarmRule.service';
+import { Observable } from 'rxjs';