http://git-wip-us.apache.org/repos/asf/ambari/blob/7c4a7e4c/ambari-logsearch/ambari-logsearch-web/src/app/services/filtering.service.spec.ts
----------------------------------------------------------------------
diff --git 
a/ambari-logsearch/ambari-logsearch-web/src/app/services/filtering.service.spec.ts
 
b/ambari-logsearch/ambari-logsearch-web/src/app/services/filtering.service.spec.ts
deleted file mode 100644
index 2b3e326..0000000
--- 
a/ambari-logsearch/ambari-logsearch-web/src/app/services/filtering.service.spec.ts
+++ /dev/null
@@ -1,97 +0,0 @@
-/**
- * Licensed to the Apache Software Foundation (ASF) under one
- * or more contributor license agreements.  See the NOTICE file
- * distributed with this work for additional information
- * regarding copyright ownership.  The ASF licenses this file
- * to you under the Apache License, Version 2.0 (the
- * "License"); you may not use this file except in compliance
- * with the License.  You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-import {TestBed, inject} from '@angular/core/testing';
-import {StoreModule} from '@ngrx/store';
-import {AppSettingsService, appSettings} from 
'@app/services/storage/app-settings.service';
-import {AppStateService, appState} from 
'@app/services/storage/app-state.service';
-import {ClustersService, clusters} from 
'@app/services/storage/clusters.service';
-import {ComponentsService, components} from 
'@app/services/storage/components.service';
-import {HostsService, hosts} from '@app/services/storage/hosts.service';
-import {UtilsService} from '@app/services/utils.service';
-import {HttpClientService} from '@app/services/http-client.service';
-import {ListItem} from '@app/classes/list-item';
-import {Node} from '@app/classes/models/node';
-
-import {FilteringService} from './filtering.service';
-
-describe('FilteringService', () => {
-  beforeEach(() => {
-    const httpClient = {
-      get: () => {
-        return {
-          subscribe: () => {
-          }
-        }
-      }
-    };
-    TestBed.configureTestingModule({
-      imports: [
-        StoreModule.provideStore({
-          appSettings,
-          appState,
-          clusters,
-          components,
-          hosts
-        })
-      ],
-      providers: [
-        FilteringService,
-        AppSettingsService,
-        AppStateService,
-        ClustersService,
-        ComponentsService,
-        HostsService,
-        UtilsService,
-        {
-          provide: HttpClientService,
-          useValue: httpClient
-        }
-      ]
-    });
-  });
-
-  it('should create service', inject([FilteringService], (service: 
FilteringService) => {
-    expect(service).toBeTruthy();
-  }));
-
-  describe('#getListItemFromString()', () => {
-    it('should convert string to ListItem', inject([FilteringService], 
(service: FilteringService) => {
-      const getListItemFromString: (name: string) => ListItem = 
service['getListItemFromString'];
-      expect(getListItemFromString('customName')).toEqual({
-        label: 'customName',
-        value: 'customName'
-      });
-    }));
-  });
-
-  describe('#getListItemFromNode()', () => {
-    it('should convert Node to ListItem', inject([FilteringService], (service: 
FilteringService) => {
-      const getListItemFromNode: (node: Node) => ListItem = 
service['getListItemFromNode'];
-      expect(getListItemFromNode({
-        name: 'customName',
-        value: '1',
-        isParent: true,
-        isRoot: true
-      })).toEqual({
-        label: 'customName (1)',
-        value: 'customName'
-      });
-    }));
-  });
-});

http://git-wip-us.apache.org/repos/asf/ambari/blob/7c4a7e4c/ambari-logsearch/ambari-logsearch-web/src/app/services/filtering.service.ts
----------------------------------------------------------------------
diff --git 
a/ambari-logsearch/ambari-logsearch-web/src/app/services/filtering.service.ts 
b/ambari-logsearch/ambari-logsearch-web/src/app/services/filtering.service.ts
deleted file mode 100644
index 85dc408..0000000
--- 
a/ambari-logsearch/ambari-logsearch-web/src/app/services/filtering.service.ts
+++ /dev/null
@@ -1,253 +0,0 @@
-/**
- * Licensed to the Apache Software Foundation (ASF) under one
- * or more contributor license agreements.  See the NOTICE file
- * distributed with this work for additional information
- * regarding copyright ownership.  The ASF licenses this file
- * to you under the Apache License, Version 2.0 (the
- * "License"); you may not use this file except in compliance
- * with the License.  You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-import {Injectable, Input} from '@angular/core';
-import {FormGroup} from '@angular/forms';
-import {Response} from '@angular/http';
-import {Subject} from 'rxjs/Subject';
-import {Observable} from 'rxjs/Observable';
-import 'rxjs/add/observable/timer';
-import 'rxjs/add/operator/takeUntil';
-import * as moment from 'moment-timezone';
-import {ListItem} from '@app/classes/list-item';
-import {FilterCondition, filters} from '@app/classes/filtering';
-import {Node} from '@app/classes/models/node';
-import {AppSettingsService} from '@app/services/storage/app-settings.service';
-import {ClustersService} from '@app/services/storage/clusters.service';
-import {ComponentsService} from '@app/services/storage/components.service';
-import {HostsService} from '@app/services/storage/hosts.service';
-import {AppStateService} from '@app/services/storage/app-state.service';
-import {HttpClientService} from '@app/services/http-client.service';
-
-@Injectable()
-export class FilteringService {
-
-  constructor(private httpClient: HttpClientService, private appSettings: 
AppSettingsService, private clustersStorage: ClustersService, private 
componentsStorage: ComponentsService, private hostsStorage: HostsService, 
private appState: AppStateService) {
-    this.loadClusters();
-    this.loadComponents();
-    this.loadHosts();
-    appSettings.getParameter('timeZone').subscribe(value => this.timeZone = 
value || this.defaultTimeZone);
-    clustersStorage.getAll().subscribe((clusters: string[]): void => {
-      this.filters.clusters.options = [...this.filters.clusters.options, 
...clusters.map(this.getListItemFromString)];
-    });
-    componentsStorage.getAll().subscribe((components: Node[]): void => {
-     this.filters.components.options = [...this.filters.components.options, 
...components.map(this.getListItemFromNode)];
-    });
-    hostsStorage.getAll().subscribe((hosts: Node[]): void => {
-      this.filters.hosts.options = [...this.filters.hosts.options, 
...hosts.map(this.getListItemFromNode)];
-    });
-    appState.getParameter('activeFiltersForm').subscribe((form: FormGroup) => 
this.activeFiltersForm = form);
-  }
-
-  /**
-   * Get instance for dropdown list from string
-   * @param name {string}
-   * @returns {ListItem}
-   */
-  private getListItemFromString(name: string): ListItem {
-    return {
-      label: name,
-      value: name
-    };
-  }
-
-  /**
-   * Get instance for dropdown list from Node object
-   * @param node {Node}
-   * @returns {ListItem}
-   */
-  private getListItemFromNode(node: Node): ListItem {
-    return {
-      label: `${node.name} (${node.value})`,
-      value: node.name
-    };
-  }
-
-  private readonly defaultTimeZone = moment.tz.guess();
-
-  timeZone: string = this.defaultTimeZone;
-
-  /**
-   * A configurable property to indicate the maximum capture time in 
milliseconds.
-   * @type {number}
-   * @default 600000 (10 minutes)
-   */
-  @Input()
-  maximumCaptureTimeLimit: number = 600000;
-
-  filters: {[key: string]: FilterCondition} = Object.assign({}, filters);
-
-  activeFiltersForm: FormGroup;
-
-  queryParameterNameChange: Subject<any> = new Subject();
-
-  queryParameterAdd: Subject<any> = new Subject();
-
-  private stopTimer: Subject<any> = new Subject();
-
-  private stopAutoRefreshCountdown: Subject<any> = new Subject();
-
-  captureSeconds: number = 0;
-
-  private readonly autoRefreshInterval: number = 30000;
-
-  autoRefreshRemainingSeconds: number = 0;
-
-  private startCaptureTime: number;
-
-  private stopCaptureTime: number;
-
-  startCaptureTimer(): void {
-    this.startCaptureTime = new Date().valueOf();
-    const maxCaptureTimeInSeconds = this.maximumCaptureTimeLimit / 1000;
-    Observable.timer(0, 1000).takeUntil(this.stopTimer).subscribe((seconds: 
number): void => {
-      this.captureSeconds = seconds;
-      if (this.captureSeconds >= maxCaptureTimeInSeconds) {
-        this.stopCaptureTimer();
-      }
-    });
-  }
-
-  stopCaptureTimer(): void {
-    const autoRefreshIntervalSeconds = this.autoRefreshInterval / 1000;
-    this.stopCaptureTime = new Date().valueOf();
-    this.captureSeconds = 0;
-    this.stopTimer.next();
-    this.setCustomTimeRange(this.startCaptureTime, this.stopCaptureTime);
-    Observable.timer(0, 
1000).takeUntil(this.stopAutoRefreshCountdown).subscribe((seconds: number): 
void => {
-      this.autoRefreshRemainingSeconds = autoRefreshIntervalSeconds - seconds;
-      if (!this.autoRefreshRemainingSeconds) {
-        this.stopAutoRefreshCountdown.next();
-        this.setCustomTimeRange(this.startCaptureTime, this.stopCaptureTime);
-      }
-    });
-  }
-
-  loadClusters(): void {
-    this.httpClient.get('clusters').subscribe((response: Response): void => {
-      const clusterNames = response.json();
-      if (clusterNames) {
-        this.clustersStorage.addInstances(clusterNames);
-      }
-    });
-  }
-
-  loadComponents(): void {
-    this.httpClient.get('components').subscribe((response: Response): void => {
-      const jsonResponse = response.json(),
-        components = jsonResponse && jsonResponse.vNodeList.map((item): Node 
=> Object.assign(item, {
-            value: item.logLevelCount.reduce((currentValue: number, 
currentItem): number => {
-              return currentValue + Number(currentItem.value);
-            }, 0)
-          }));
-      if (components) {
-        this.componentsStorage.addInstances(components);
-      }
-    });
-  }
-
-  loadHosts(): void {
-    this.httpClient.get('hosts').subscribe((response: Response): void => {
-      const jsonResponse = response.json(),
-        hosts = jsonResponse && jsonResponse.vNodeList;
-      if (hosts) {
-        this.hostsStorage.addInstances(hosts);
-      }
-    });
-  }
-
-  setCustomTimeRange(startTime: number, endTime: number): void {
-    this.activeFiltersForm.controls.timeRange.setValue({
-      type: 'CUSTOM',
-      start: moment(startTime),
-      end: moment(endTime)
-    });
-  }
-
-  private getStartTime = (value: any, current: string): string => {
-    let time;
-    if (value) {
-      const endTime = moment(moment(current).valueOf());
-      switch (value.type) {
-        case 'LAST':
-          time = endTime.subtract(value.interval, value.unit);
-          break;
-        case 'CURRENT':
-          time = moment().tz(this.timeZone).startOf(value.unit);
-          break;
-        case 'PAST':
-          time = endTime.startOf(value.unit);
-          break;
-        case 'CUSTOM':
-          time = value.start;
-          break;
-        default:
-          break;
-      }
-    }
-    return time ? time.toISOString() : '';
-  };
-
-  private getEndTime = (value: any): string => {
-    let time;
-    if (value) {
-      switch (value.type) {
-        case 'LAST':
-          time = moment();
-          break;
-        case 'CURRENT':
-          time = moment().tz(this.timeZone).endOf(value.unit);
-          break;
-        case 'PAST':
-          time = 
moment().tz(this.timeZone).startOf(value.unit).millisecond(-1);
-          break;
-        case 'CUSTOM':
-          time = value.end;
-          break;
-        default:
-          break;
-      }
-    }
-    return time ? time.toISOString() : '';
-  };
-
-  private getQuery(isExclude: boolean): (value: any[]) => string {
-    return (value: any[]): string => {
-      let parameters;
-      if (value && value.length) {
-        parameters = value.filter(item => item.isExclude === 
isExclude).map(parameter => {
-          return {
-            [parameter.name]: parameter.value.replace(/\s/g, '+')
-          };
-        });
-      }
-      return parameters && parameters.length ? JSON.stringify(parameters) : '';
-    }
-  }
-
-  readonly valueGetters = {
-    to: this.getEndTime,
-    from: this.getStartTime,
-    sortType: value => value && value.type,
-    sortBy: value => value && value.key,
-    page: value => value == null ? value : value.toString(),
-    includeQuery: this.getQuery(false),
-    excludeQuery: this.getQuery(true)
-  };
-
-}

http://git-wip-us.apache.org/repos/asf/ambari/blob/7c4a7e4c/ambari-logsearch/ambari-logsearch-web/src/app/services/logs-container.service.spec.ts
----------------------------------------------------------------------
diff --git 
a/ambari-logsearch/ambari-logsearch-web/src/app/services/logs-container.service.spec.ts
 
b/ambari-logsearch/ambari-logsearch-web/src/app/services/logs-container.service.spec.ts
index ee0e1e7..47cb25d 100644
--- 
a/ambari-logsearch/ambari-logsearch-web/src/app/services/logs-container.service.spec.ts
+++ 
b/ambari-logsearch/ambari-logsearch-web/src/app/services/logs-container.service.spec.ts
@@ -31,7 +31,8 @@ import {HostsService, hosts} from 
'@app/services/storage/hosts.service';
 import {ServiceLogsTruncatedService, serviceLogsTruncated} from 
'@app/services/storage/service-logs-truncated.service';
 import {TabsService, tabs} from '@app/services/storage/tabs.service';
 import {HttpClientService} from '@app/services/http-client.service';
-import {FilteringService} from '@app/services/filtering.service';
+import {ListItem} from '@app/classes/list-item';
+import {NodeItem} from '@app/classes/models/node-item';
 
 import {LogsContainerService} from './logs-container.service';
 
@@ -79,8 +80,7 @@ describe('LogsContainerService', () => {
         {
           provide: HttpClientService,
           useValue: httpClient
-        },
-        FilteringService
+        }
       ]
     });
   });
@@ -88,4 +88,29 @@ describe('LogsContainerService', () => {
   it('should create service', inject([LogsContainerService], (service: 
LogsContainerService) => {
     expect(service).toBeTruthy();
   }));
+
+  describe('#getListItemFromString()', () => {
+    it('should convert string to ListItem', inject([LogsContainerService], 
(service: LogsContainerService) => {
+      const getListItemFromString: (name: string) => ListItem = 
service['getListItemFromString'];
+      expect(getListItemFromString('customName')).toEqual({
+        label: 'customName',
+        value: 'customName'
+      });
+    }));
+  });
+
+  describe('#getListItemFromNode()', () => {
+    it('should convert NodeItem to ListItem', inject([LogsContainerService], 
(service: LogsContainerService) => {
+      const getListItemFromNode: (node: NodeItem) => ListItem = 
service['getListItemFromNode'];
+      expect(getListItemFromNode({
+        name: 'customName',
+        value: '1',
+        isParent: true,
+        isRoot: true
+      })).toEqual({
+        label: 'customName (1)',
+        value: 'customName'
+      });
+    }));
+  });
 });

http://git-wip-us.apache.org/repos/asf/ambari/blob/7c4a7e4c/ambari-logsearch/ambari-logsearch-web/src/app/services/logs-container.service.ts
----------------------------------------------------------------------
diff --git 
a/ambari-logsearch/ambari-logsearch-web/src/app/services/logs-container.service.ts
 
b/ambari-logsearch/ambari-logsearch-web/src/app/services/logs-container.service.ts
index e187b00..f45887b 100644
--- 
a/ambari-logsearch/ambari-logsearch-web/src/app/services/logs-container.service.ts
+++ 
b/ambari-logsearch/ambari-logsearch-web/src/app/services/logs-container.service.ts
@@ -17,9 +17,14 @@
  */
 
 import {Injectable} from '@angular/core';
+import {FormGroup, FormControl} from '@angular/forms';
 import {Response} from '@angular/http';
+import {Subject} from 'rxjs/Subject';
+import {Observable} from 'rxjs/Observable';
+import 'rxjs/add/observable/timer';
+import 'rxjs/add/operator/takeUntil';
+import * as moment from 'moment-timezone';
 import {HttpClientService} from '@app/services/http-client.service';
-import {FilteringService} from '@app/services/filtering.service';
 import {AuditLogsService} from '@app/services/storage/audit-logs.service';
 import {AuditLogsFieldsService} from 
'@app/services/storage/audit-logs-fields.service';
 import {ServiceLogsService} from '@app/services/storage/service-logs.service';
@@ -27,30 +32,411 @@ import {ServiceLogsFieldsService} from 
'@app/services/storage/service-logs-field
 import {ServiceLogsHistogramDataService} from 
'@app/services/storage/service-logs-histogram-data.service';
 import {ServiceLogsTruncatedService} from 
'@app/services/storage/service-logs-truncated.service';
 import {AppStateService} from '@app/services/storage/app-state.service';
+import {AppSettingsService} from '@app/services/storage/app-settings.service';
 import {TabsService} from '@app/services/storage/tabs.service';
+import {ClustersService} from '@app/services/storage/clusters.service';
+import {ComponentsService} from '@app/services/storage/components.service';
+import {HostsService} from '@app/services/storage/hosts.service';
 import {ActiveServiceLogEntry} from '@app/classes/active-service-log-entry';
+import {FilterCondition, TimeUnitListItem, SortingListItem} from 
'@app/classes/filtering';
+import {ListItem} from '@app/classes/list-item';
 import {Tab} from '@app/classes/models/tab';
 import {AuditLogField} from '@app/classes/models/audit-log-field';
 import {ServiceLogField} from '@app/classes/models/service-log-field';
 import {BarGraph} from '@app/classes/models/bar-graph';
+import {NodeItem} from '@app/classes/models/node-item';
 
 @Injectable()
 export class LogsContainerService {
 
-  constructor(private httpClient: HttpClientService, private auditLogsStorage: 
AuditLogsService, private auditLogsFieldsStorage: AuditLogsFieldsService, 
private serviceLogsStorage: ServiceLogsService, private 
serviceLogsFieldsStorage: ServiceLogsFieldsService, private 
serviceLogsHistogramStorage: ServiceLogsHistogramDataService, private 
serviceLogsTruncatedStorage: ServiceLogsTruncatedService, private appState: 
AppStateService, private tabsStorage: TabsService, private filtering: 
FilteringService) {
+  constructor(
+    private httpClient: HttpClientService, private auditLogsStorage: 
AuditLogsService,
+    private auditLogsFieldsStorage: AuditLogsFieldsService, private 
serviceLogsStorage: ServiceLogsService,
+    private serviceLogsFieldsStorage: ServiceLogsFieldsService,
+    private serviceLogsHistogramStorage: ServiceLogsHistogramDataService,
+    private serviceLogsTruncatedStorage: ServiceLogsTruncatedService, private 
appState: AppStateService,
+    private appSettings: AppSettingsService, private tabsStorage: TabsService, 
private clustersStorage: ClustersService,
+    private componentsStorage: ComponentsService, private hostsStorage: 
HostsService
+  ) {
+    const formItems = Object.keys(this.filters).reduce((currentObject: any, 
key: string): {[key: string]: FormControl} => {
+      let formControl = new FormControl(),
+        item = {
+          [key]: formControl
+        };
+      formControl.setValue(this.filters[key].defaultSelection);
+      return Object.assign(currentObject, item);
+    }, {});
+    this.filtersForm = new FormGroup(formItems);
+    this.loadClusters();
+    this.loadComponents();
+    this.loadHosts();
     appState.getParameter('activeLog').subscribe((value: ActiveServiceLogEntry 
| null) => this.activeLog = value);
-    appState.getParameter('isServiceLogsFileView').subscribe((value: boolean): 
void => {
-      const activeLog = this.activeLog,
-        filtersForm = this.filtering.activeFiltersForm;
-      if (value && activeLog) {
-        filtersForm.controls.hosts.setValue(activeLog.host_name);
-        filtersForm.controls.components.setValue(activeLog.component_name);
-      }
-      this.isServiceLogsFileView = value;
-    });
+    appState.getParameter('isServiceLogsFileView').subscribe((value: boolean) 
=> this.isServiceLogsFileView = value);
     appState.getParameter('activeLogsType').subscribe((value: string) => 
this.activeLogsType = value);
+    appSettings.getParameter('timeZone').subscribe((value: string) => 
this.timeZone = value || this.defaultTimeZone);
+    tabsStorage.mapCollection((tab: Tab): Tab => {
+      let currentAppState = tab.appState || {};
+      const appState = Object.assign({}, currentAppState, {
+        activeFilters: this.getFiltersData(tab.type)
+      });
+      return Object.assign({}, tab, {
+        appState
+      });
+    });
+    appState.getParameter('activeFilters').subscribe((filters: object): void 
=> {
+      this.filtersFormChange.next();
+      if (filters) {
+        const controls = this.filtersForm.controls;
+        Object.keys(controls).forEach((key: string): void => {
+          controls[key].setValue(filters.hasOwnProperty(key) ? filters[key] : 
null);
+        });
+      }
+      this.loadLogs();
+      
this.filtersForm.valueChanges.takeUntil(this.filtersFormChange).subscribe((value:
 object): void => {
+        this.tabsStorage.mapCollection((tab: Tab): Tab => {
+          const currentAppState = tab.appState || {},
+            appState = Object.assign({}, currentAppState, tab.isActive ? {
+              activeFilters: value
+            } : null);
+          return Object.assign({}, tab, {
+            appState
+          });
+        });
+        this.loadLogs();
+      });
+    });
   }
 
+  private readonly paginationOptions: string[] = ['10', '25', '50', '100'];
+
+  filters: {[key: string]: FilterCondition} = {
+    clusters: {
+      label: 'filter.clusters',
+      options: [],
+      defaultSelection: []
+    },
+    timeRange: {
+      options: [
+        [
+          {
+            label: 'filter.timeRange.7d',
+            value: {
+              type: 'LAST',
+              unit: 'd',
+              interval: 7
+            }
+          },
+          {
+            label: 'filter.timeRange.30d',
+            value: {
+              type: 'LAST',
+              unit: 'd',
+              interval: 30
+            }
+          },
+          {
+            label: 'filter.timeRange.60d',
+            value: {
+              type: 'LAST',
+              unit: 'd',
+              interval: 60
+            }
+          },
+          {
+            label: 'filter.timeRange.90d',
+            value: {
+              type: 'LAST',
+              unit: 'd',
+              interval: 90
+            }
+          },
+          {
+            label: 'filter.timeRange.6m',
+            value: {
+              type: 'LAST',
+              unit: 'M',
+              interval: 6
+            }
+          },
+          {
+            label: 'filter.timeRange.1y',
+            value: {
+              type: 'LAST',
+              unit: 'y',
+              interval: 1
+            }
+          },
+          {
+            label: 'filter.timeRange.2y',
+            value: {
+              type: 'LAST',
+              unit: 'y',
+              interval: 2
+            }
+          },
+          {
+            label: 'filter.timeRange.5y',
+            value: {
+              type: 'LAST',
+              unit: 'y',
+              interval: 5
+            }
+          }
+        ],
+        [
+          {
+            label: 'filter.timeRange.yesterday',
+            value: {
+              type: 'PAST',
+              unit: 'd'
+            }
+          },
+          // TODO implement time range calculation
+          /*
+           {
+           label: 'filter.timeRange.beforeYesterday',
+           value: {
+           type: 'PAST',
+           unit: 'd'
+           }
+           },
+           {
+           label: 'filter.timeRange.thisDayLastWeek',
+           value: {
+           type: 'PAST',
+           unit: 'd'
+           }
+           },
+           */
+          {
+            label: 'filter.timeRange.previousWeek',
+            value: {
+              type: 'PAST',
+              unit: 'w'
+            }
+          },
+          {
+            label: 'filter.timeRange.previousMonth',
+            value: {
+              type: 'PAST',
+              unit: 'M'
+            }
+          },
+          {
+            label: 'filter.timeRange.previousYear',
+            value: {
+              type: 'PAST',
+              unit: 'y'
+            }
+          }
+        ],
+        [
+          {
+            label: 'filter.timeRange.today',
+            value: {
+              type: 'CURRENT',
+              unit: 'd'
+            }
+          },
+          {
+            label: 'filter.timeRange.thisWeek',
+            value: {
+              type: 'CURRENT',
+              unit: 'w'
+            }
+          },
+          {
+            label: 'filter.timeRange.thisMonth',
+            value: {
+              type: 'CURRENT',
+              unit: 'M'
+            }
+          },
+          {
+            label: 'filter.timeRange.thisYear',
+            value: {
+              type: 'CURRENT',
+              unit: 'y'
+            }
+          }
+        ],
+        [
+          {
+            label: 'filter.timeRange.5min',
+            value: {
+              type: 'LAST',
+              unit: 'm',
+              interval: 5
+            }
+          },
+          {
+            label: 'filter.timeRange.15min',
+            value: {
+              type: 'LAST',
+              unit: 'm',
+              interval: 15
+            }
+          },
+          {
+            label: 'filter.timeRange.30min',
+            value: {
+              type: 'LAST',
+              unit: 'm',
+              interval: 30
+            }
+          },
+          {
+            label: 'filter.timeRange.1hr',
+            value: {
+              type: 'LAST',
+              unit: 'h',
+              interval: 1
+            }
+          },
+          {
+            label: 'filter.timeRange.3hr',
+            value: {
+              type: 'LAST',
+              unit: 'h',
+              interval: 3
+            }
+          },
+          {
+            label: 'filter.timeRange.6hr',
+            value: {
+              type: 'LAST',
+              unit: 'h',
+              interval: 6
+            }
+          },
+          {
+            label: 'filter.timeRange.12hr',
+            value: {
+              type: 'LAST',
+              unit: 'h',
+              interval: 12
+            }
+          },
+          {
+            label: 'filter.timeRange.24hr',
+            value: {
+              type: 'LAST',
+              unit: 'h',
+              interval: 24
+            }
+          },
+        ]
+      ],
+      defaultSelection: {
+        value: {
+          type: 'LAST',
+          unit: 'h',
+          interval: 1
+        },
+        label: 'filter.timeRange.1hr'
+      }
+    },
+    components: {
+      label: 'filter.components',
+      iconClass: 'fa fa-cubes',
+      options: [],
+      defaultSelection: []
+    },
+    levels: {
+      label: 'filter.levels',
+      iconClass: 'fa fa-sort-amount-asc',
+      options: [
+        {
+          label: 'levels.fatal',
+          value: 'FATAL'
+        },
+        {
+          label: 'levels.error',
+          value: 'ERROR'
+        },
+        {
+          label: 'levels.warn',
+          value: 'WARN'
+        },
+        {
+          label: 'levels.info',
+          value: 'INFO'
+        },
+        {
+          label: 'levels.debug',
+          value: 'DEBUG'
+        },
+        {
+          label: 'levels.trace',
+          value: 'TRACE'
+        },
+        {
+          label: 'levels.unknown',
+          value: 'UNKNOWN'
+        }
+      ],
+      defaultSelection: []
+    },
+    hosts: {
+      label: 'filter.hosts',
+      iconClass: 'fa fa-server',
+      options: [],
+      defaultSelection: []
+    },
+    sorting: {
+      label: 'sorting.title',
+      options: [
+        {
+          label: 'sorting.time.asc',
+          value: {
+            key: 'logtime',
+            type: 'asc'
+          }
+        },
+        {
+          label: 'sorting.time.desc',
+          value: {
+            key: 'logtime',
+            type: 'desc'
+          }
+        }
+      ],
+      defaultSelection: [
+        {
+          label: 'sorting.time.desc',
+          value: {
+            key: 'logtime',
+            type: 'desc'
+          }
+        }
+      ]
+    },
+    pageSize: {
+      label: 'pagination.title',
+      options: this.paginationOptions.map((option: string): ListItem => {
+        return {
+          label: option,
+          value: option
+        }
+      }),
+      defaultSelection: [
+        {
+          label: '10',
+          value: '10'
+        }
+      ]
+    },
+    page: {
+      defaultSelection: 0
+    },
+    query: {}
+  };
+
+  readonly filtersFormItemsMap: {[key: string]: string[]} = {
+    serviceLogs: ['clusters', 'timeRange', 'components', 'levels', 'hosts', 
'sorting', 'pageSize', 'page', 'query'],
+    auditLogs: ['clusters', 'timeRange', 'sorting', 'pageSize', 'page', 
'query'] // TODO add all the required fields
+  };
+
   readonly colors = {
     WARN: '#FF8916',
     ERROR: '#E81D1D',
@@ -93,14 +479,71 @@ export class LogsContainerService {
     }
   };
 
+  private readonly defaultTimeZone = moment.tz.guess();
+
+  timeZone: string = this.defaultTimeZone;
+
   totalCount: number = 0;
 
+  /**
+   * A configurable property to indicate the maximum capture time in 
milliseconds.
+   * @type {number}
+   * @default 600000 (10 minutes)
+   */
+  private readonly maximumCaptureTimeLimit: number = 600000;
+
   isServiceLogsFileView: boolean = false;
 
+  filtersForm: FormGroup;
+
   activeLog: ActiveServiceLogEntry | null = null;
 
   activeLogsType: string;
 
+  private filtersFormChange: Subject<any> = new Subject();
+
+  /**
+   * Get instance for dropdown list from string
+   * @param name {string}
+   * @returns {ListItem}
+   */
+  private getListItemFromString(name: string): ListItem {
+    return {
+      label: name,
+      value: name
+    };
+  }
+
+  /**
+   * Get instance for dropdown list from NodeItem object
+   * @param node {NodeItem}
+   * @returns {ListItem}
+   */
+  private getListItemFromNode(node: NodeItem): ListItem {
+    return {
+      label: `${node.name} (${node.value})`,
+      value: node.name
+    };
+  }
+
+  queryParameterNameChange: Subject<any> = new Subject();
+
+  queryParameterAdd: Subject<any> = new Subject();
+
+  private stopTimer: Subject<any> = new Subject();
+
+  private stopAutoRefreshCountdown: Subject<any> = new Subject();
+
+  captureSeconds: number = 0;
+
+  private readonly autoRefreshInterval: number = 30000;
+
+  autoRefreshRemainingSeconds: number = 0;
+
+  private startCaptureTime: number;
+
+  private stopCaptureTime: number;
+
   loadLogs = (logsType: string = this.activeLogsType): void => {
     this.httpClient.get(logsType, 
this.getParams('listFilters')).subscribe((response: Response): void => {
       const jsonResponse = response.json(),
@@ -128,7 +571,7 @@ export class LogsContainerService {
         }
       });
     }
-  }
+  };
 
   loadLogContext(id: string, hostName: string, componentName: string, 
scrollType: 'before' | 'after' | '' = ''): void {
     const params = {
@@ -161,22 +604,18 @@ export class LogsContainerService {
     });
   }
 
-  private getParams(filtersMapName: string): any {
+  private getParams(filtersMapName: string): {[key: string]: string} {
     let params = {};
     Object.keys(this[filtersMapName]).forEach((key: string): void => {
-      const inputValue = this.filtering.activeFiltersForm.getRawValue()[key],
+      const inputValue = this.filtersForm.getRawValue()[key],
         paramNames = this[filtersMapName][key];
-      paramNames.forEach(paramName => {
+      paramNames.forEach((paramName: string): void => {
         let value;
-        const valueGetter = this.filtering.valueGetters[paramName];
-        if (valueGetter) {
-          if (paramName === 'from') {
-            value = valueGetter(inputValue, params['to']);
-          } else {
-            value = valueGetter(inputValue);
-          }
+        const valueGetter = this.valueGetters[paramName] || 
this.defaultValueGetter;
+        if (paramName === 'from') {
+          value = valueGetter(inputValue, params['to']);
         } else {
-          value = inputValue;
+          value = valueGetter(inputValue);
         }
         if (value != null && value !== '') {
           params[paramName] = value;
@@ -222,12 +661,197 @@ export class LogsContainerService {
     return Object.keys(keysObject).map((key: string): {fieldClass} => new 
fieldClass(key));
   }
 
+  private getStartTime = (selection: TimeUnitListItem, current: string): 
string => {
+    let time;
+    const value = selection && selection.value;
+    if (value) {
+      const endTime = moment(moment(current).valueOf());
+      switch (value.type) {
+        case 'LAST':
+          time = endTime.subtract(value.interval, value.unit);
+          break;
+        case 'CURRENT':
+          time = moment().tz(this.timeZone).startOf(value.unit);
+          break;
+        case 'PAST':
+          time = endTime.startOf(value.unit);
+          break;
+        case 'CUSTOM':
+          time = value.start;
+          break;
+        default:
+          break;
+      }
+    }
+    return time ? time.toISOString() : '';
+  };
+
+  private getEndTime = (selection: TimeUnitListItem): string => {
+    let time;
+    const value = selection && selection.value;
+    if (value) {
+      switch (value.type) {
+        case 'LAST':
+          time = moment();
+          break;
+        case 'CURRENT':
+          time = moment().tz(this.timeZone).endOf(value.unit);
+          break;
+        case 'PAST':
+          time = 
moment().tz(this.timeZone).startOf(value.unit).millisecond(-1);
+          break;
+        case 'CUSTOM':
+          time = value.end;
+          break;
+        default:
+          break;
+      }
+    }
+    return time ? time.toISOString() : '';
+  };
+
+  private getQuery(isExclude: boolean): (value: any[]) => string {
+    return (value: any[]): string => {
+      let parameters;
+      if (value && value.length) {
+        parameters = value.filter(item => item.isExclude === 
isExclude).map(parameter => {
+          return {
+            [parameter.name]: parameter.value.replace(/\s/g, '+')
+          };
+        });
+      }
+      return parameters && parameters.length ? JSON.stringify(parameters) : '';
+    }
+  }
+
+  private getSortType(selection: SortingListItem[] = []): 'asc' | 'desc' {
+    return selection[0] && selection[0].value ? selection[0].value.type : 
'desc';
+  }
+
+  private getSortKey(selection: SortingListItem[] = []): string {
+    return selection[0] && selection[0].value ? selection[0].value.key : '';
+  }
+
+  private getPage(value: number | undefined): string | undefined {
+    return typeof value === 'undefined' ? value : value.toString();
+  }
+
+  private defaultValueGetter(selection: ListItem | ListItem[] | null): string {
+    if (Array.isArray(selection)) {
+      return selection.map((item: ListItem): any => item.value).join(',');
+    } else if (selection) {
+      return selection.value;
+    } else {
+      return '';
+    }
+  }
+
+  private readonly valueGetters = {
+    to: this.getEndTime,
+    from: this.getStartTime,
+    sortType: this.getSortType,
+    sortBy: this.getSortKey,
+    page: this.getPage,
+    includeQuery: this.getQuery(false),
+    excludeQuery: this.getQuery(true)
+  };
+
   switchTab(activeTab: Tab): void {
+    this.tabsStorage.mapCollection((tab: Tab): Tab => {
+      return Object.assign({}, tab, {
+        isActive: tab.id === activeTab.id
+      });
+    });
     this.appState.setParameters(activeTab.appState);
-    this.tabsStorage.mapCollection((tab: Tab): Tab => Object.assign({}, tab, {
-      isActive: tab.id === activeTab.id
-    }));
-    this.loadLogs();
+  }
+
+  startCaptureTimer(): void {
+    this.startCaptureTime = new Date().valueOf();
+    const maxCaptureTimeInSeconds = this.maximumCaptureTimeLimit / 1000;
+    Observable.timer(0, 1000).takeUntil(this.stopTimer).subscribe((seconds: 
number): void => {
+      this.captureSeconds = seconds;
+      if (this.captureSeconds >= maxCaptureTimeInSeconds) {
+        this.stopCaptureTimer();
+      }
+    });
+  }
+
+  stopCaptureTimer(): void {
+    const autoRefreshIntervalSeconds = this.autoRefreshInterval / 1000;
+    this.stopCaptureTime = new Date().valueOf();
+    this.captureSeconds = 0;
+    this.stopTimer.next();
+    this.setCustomTimeRange(this.startCaptureTime, this.stopCaptureTime);
+    Observable.timer(0, 
1000).takeUntil(this.stopAutoRefreshCountdown).subscribe((seconds: number): 
void => {
+      this.autoRefreshRemainingSeconds = autoRefreshIntervalSeconds - seconds;
+      if (!this.autoRefreshRemainingSeconds) {
+        this.stopAutoRefreshCountdown.next();
+        this.setCustomTimeRange(this.startCaptureTime, this.stopCaptureTime);
+      }
+    });
+  }
+
+  loadClusters(): Observable<Response> {
+    const request = this.httpClient.get('clusters');
+    request.subscribe((response: Response): void => {
+      const clusterNames = response.json();
+      if (clusterNames) {
+        
this.filters.clusters.options.push(...clusterNames.map(this.getListItemFromString));
+        this.clustersStorage.addInstances(clusterNames);
+      }
+    });
+    return request;
+  }
+
+  loadComponents(): Observable<Response> {
+    const request = this.httpClient.get('components');
+    request.subscribe((response: Response): void => {
+      const jsonResponse = response.json(),
+        components = jsonResponse && jsonResponse.vNodeList.map((item): 
NodeItem => Object.assign(item, {
+            value: item.logLevelCount.reduce((currentValue: number, 
currentItem): number => {
+              return currentValue + Number(currentItem.value);
+            }, 0)
+          }));
+      if (components) {
+        
this.filters.components.options.push(...components.map(this.getListItemFromNode));
+        this.componentsStorage.addInstances(components);
+      }
+    });
+    return request;
+  }
+
+  loadHosts(): Observable<Response> {
+    const request = this.httpClient.get('hosts');
+    request.subscribe((response: Response): void => {
+      const jsonResponse = response.json(),
+        hosts = jsonResponse && jsonResponse.vNodeList;
+      if (hosts) {
+        
this.filters.hosts.options.push(...hosts.map(this.getListItemFromNode));
+        this.hostsStorage.addInstances(hosts);
+      }
+    });
+    return request;
+  }
+
+  setCustomTimeRange(startTime: number, endTime: number): void {
+    this.filtersForm.controls.timeRange.setValue({
+      label: 'filter.timeRange.custom',
+      value: {
+        type: 'CUSTOM',
+        start: moment(startTime),
+        end: moment(endTime)
+      }
+    });
+  }
+
+  getFiltersData(listType: string): object {
+    const itemsList = this.filtersFormItemsMap[listType],
+      keys = Object.keys(this.filters).filter((key: string): boolean => 
itemsList.indexOf(key) > -1);
+    return keys.reduce((currentObject: object, key: string): object => {
+      return Object.assign(currentObject, {
+        [key]: this.filters[key].defaultSelection
+      });
+    }, {});
   }
 
 }

http://git-wip-us.apache.org/repos/asf/ambari/blob/7c4a7e4c/ambari-logsearch/ambari-logsearch-web/src/app/services/utils.service.spec.ts
----------------------------------------------------------------------
diff --git 
a/ambari-logsearch/ambari-logsearch-web/src/app/services/utils.service.spec.ts 
b/ambari-logsearch/ambari-logsearch-web/src/app/services/utils.service.spec.ts
index a4a0cf8..23d3726 100644
--- 
a/ambari-logsearch/ambari-logsearch-web/src/app/services/utils.service.spec.ts
+++ 
b/ambari-logsearch/ambari-logsearch-web/src/app/services/utils.service.spec.ts
@@ -31,56 +31,273 @@ describe('UtilsService', () => {
     expect(service).toBeTruthy();
   }));
 
-  describe('#updateMultiSelectValue()', () => {
+  describe('#isEqual()', () => {
     const cases = [
       {
-        currentValue: '',
-        value: 'v0',
-        isChecked: true,
-        result: 'v0',
-        title: 'check; no checked items before'
+        valueA: 1,
+        valueB: 1,
+        result: true,
+        title: 'same numbers'
       },
       {
-        currentValue: 'v1,v2',
-        value: 'v3',
-        isChecked: true,
-        result: 'v1,v2,v3',
-        title: 'check'
+        valueA: 1,
+        valueB: 2,
+        result: false,
+        title: 'different numbers'
       },
       {
-        currentValue: 'v4,v5',
-        value: 'v4',
-        isChecked: false,
-        result: 'v5',
-        title: 'uncheck'
+        valueA: 'a',
+        valueB: 'a',
+        result: true,
+        title: 'same strings'
       },
       {
-        currentValue: 'v6,v7',
-        value: 'v6',
-        isChecked: true,
-        result: 'v6,v7',
-        title: 'avoid repeating check action'
+        valueA: 'a',
+        valueB: 'b',
+        result: false,
+        title: 'different strings'
       },
       {
-        currentValue: 'v8,v9',
-        value: 'v10',
-        isChecked: false,
-        result: 'v8,v9',
-        title: 'avoid repeating uncheck action'
+        valueA: '1',
+        valueB: 1,
+        result: false,
+        title: 'different types'
       },
       {
-        currentValue: 'v11',
-        value: 'v11',
-        isChecked: false,
-        result: '',
-        title: 'uncheck last item'
+        valueA: true,
+        valueB: true,
+        result: true,
+        title: 'same booleans'
+      },
+      {
+        valueA: false,
+        valueB: true,
+        result: false,
+        title: 'different booleans'
+      },
+      {
+        valueA: {},
+        valueB: {},
+        result: true,
+        title: 'empty objects'
+      },
+      {
+        valueA: {
+          p0: 'v0'
+        },
+        valueB: {
+          p0: 'v0'
+        },
+        result: true,
+        title: 'same objects'
+      },
+      {
+        valueA: {
+          p0: 'v0'
+        },
+        valueB: {
+          p0: 'v1'
+        },
+        result: false,
+        title: 'different objects'
+      },
+      {
+        valueA: {
+          p0: {
+            p1: 'v1'
+          }
+        },
+        valueB: {
+          p0: {
+            p1: 'v1'
+          }
+        },
+        result: true,
+        title: 'same objects in depth'
+      },
+      {
+        valueA: {
+          p0: {
+            p1: 'v1'
+          }
+        },
+        valueB: {
+          p0: {
+            p1: 'v2'
+          }
+        },
+        result: false,
+        title: 'different objects in depth'
+      },
+      {
+        valueA: [],
+        valueB: [],
+        result: true,
+        title: 'empty arrays'
+      },
+      {
+        valueA: [1, 'a'],
+        valueB: [1, 'a'],
+        result: true,
+        title: 'same arrays'
+      },
+      {
+        valueA: [1, 'a'],
+        valueB: [1, 'b'],
+        result: false,
+        title: 'different arrays'
+      },
+      {
+        valueA: [1, 1],
+        valueB: [1, 1, 1],
+        result: false,
+        title: 'arrays of different length'
+      },
+      {
+        valueA: [{}],
+        valueB: [{}],
+        result: true,
+        title: 'arrays of empty objects'
+      },
+      {
+        valueA: [
+          {
+            p0: 'v0'
+          }
+        ],
+        valueB: [
+          {
+            p0: 'v0'
+          }
+        ],
+        result: true,
+        title: 'arrays of same objects'
+      },
+      {
+        valueA: [
+          {
+            p0: 'v0'
+          }
+        ],
+        valueB: [
+          {
+            p0: 'v1'
+          }
+        ],
+        result: false,
+        title: 'arrays of different objects'
+      },
+      {
+        valueA: function() {},
+        valueB: function() {},
+        result: true,
+        title: 'same functions'
+      },
+      {
+        valueA: function(a) {
+          return a;
+        },
+        valueB: function(b) {
+          return !b;
+        },
+        result: false,
+        title: 'different functions'
+      },
+      {
+        valueA: new Date(1),
+        valueB: new Date(1),
+        result: true,
+        title: 'same dates'
+      },
+      {
+        valueA: new Date(1),
+        valueB: new Date(2),
+        result: false,
+        title: 'different dates'
+      },
+      {
+        valueA: new RegExp('a'),
+        valueB: new RegExp('a'),
+        result: true,
+        title: 'same regexps'
+      },
+      {
+        valueA: new RegExp('a', 'i'),
+        valueB: new RegExp('a', 'g'),
+        result: false,
+        title: 'same regexps with different flags'
+      },
+      {
+        valueA: new RegExp('a'),
+        valueB: new RegExp('b'),
+        result: false,
+        title: 'different regexps'
+      },
+      {
+        valueA: new Number(1),
+        valueB: new Number(1),
+        result: true,
+        title: 'same number objects'
+      },
+      {
+        valueA: new Number(1),
+        valueB: new Number(2),
+        result: false,
+        title: 'different number objects'
+      },
+      {
+        valueA: new String('a'),
+        valueB: new String('a'),
+        result: true,
+        title: 'same string objects'
+      },
+      {
+        valueA: new String('a'),
+        valueB: new String('b'),
+        result: false,
+        title: 'different string objects'
+      },
+      {
+        valueA: new Boolean(true),
+        valueB: new Boolean(true),
+        result: true,
+        title: 'same boolean objects'
+      },
+      {
+        valueA: new Boolean(true),
+        valueB: new Boolean(false),
+        result: false,
+        title: 'different boolean objects'
+      },
+      {
+        valueA: null,
+        valueB: null,
+        result: true,
+        title: 'null values'
+      },
+      {
+        valueA: undefined,
+        valueB: undefined,
+        result: true,
+        title: 'undefined values'
+      },
+      {
+        valueA: undefined,
+        valueB: null,
+        result: false,
+        title: 'undefined vs null'
       }
     ];
 
     cases.forEach(test => {
-      it(test.title, inject([UtilsService], (service: UtilsService) => {
-        expect(service.updateMultiSelectValue(test.currentValue, test.value, 
test.isChecked)).toEqual(test.result);
-      }));
+      describe(test.title, () => {
+        it('equality', inject([UtilsService], (service: UtilsService) => {
+          expect(service.isEqual(test.valueA, 
test.valueB)).toEqual(test.result);
+        }));
+        it('symmetry', inject([UtilsService], (service: UtilsService) => {
+          expect(service.isEqual(test.valueA, 
test.valueB)).toEqual(service.isEqual(test.valueB, test.valueA));
+        }));
+      });
     });
   });
 });

http://git-wip-us.apache.org/repos/asf/ambari/blob/7c4a7e4c/ambari-logsearch/ambari-logsearch-web/src/app/services/utils.service.ts
----------------------------------------------------------------------
diff --git 
a/ambari-logsearch/ambari-logsearch-web/src/app/services/utils.service.ts 
b/ambari-logsearch/ambari-logsearch-web/src/app/services/utils.service.ts
index 3448dd4..175b585 100644
--- a/ambari-logsearch/ambari-logsearch-web/src/app/services/utils.service.ts
+++ b/ambari-logsearch/ambari-logsearch-web/src/app/services/utils.service.ts
@@ -22,27 +22,56 @@ import * as moment from 'moment-timezone';
 @Injectable()
 export class UtilsService {
 
-  valueHasChanged(currentValue: any, newValue: any): boolean {
-    if (newValue == null) {
+  /**
+   * Comparison of two instances of any data type be value instead of reference
+   * @param valueA
+   * @param valueB
+   * @returns {boolean}
+   */
+  isEqual = (valueA: any, valueB: any): boolean => {
+    if (valueA === valueB) {
+      return true;
+    }
+    if (valueA instanceof Date && valueB instanceof Date) {
+      return valueA.valueOf() === valueB.valueOf();
+    }
+    if ((typeof valueA === 'function' && typeof valueB === 'function') ||
+      (valueA instanceof RegExp && valueB instanceof RegExp) ||
+      (valueA instanceof String && valueB instanceof String) ||
+      (valueA instanceof Number && valueB instanceof Number) ||
+      (valueA instanceof Boolean && valueB instanceof Boolean)) {
+      return valueA.toString() === valueB.toString();
+    }
+    if (!(valueA instanceof Object) || !(valueB instanceof Object)) {
       return false;
     }
-    if (typeof newValue === 'object') {
-      return JSON.stringify(currentValue) !== JSON.stringify(newValue);
-    } else {
-      return currentValue !== newValue;
+    if (valueA.constructor !== valueB.constructor) {
+      return false;
     }
-  }
-
-  updateMultiSelectValue(currentValue: string, value: string, isChecked: 
boolean): string {
-    let valuesArray = currentValue ? currentValue.split(',') : [],
-      valuePosition = valuesArray.indexOf(value);
-    if (isChecked && valuePosition === -1) {
-      valuesArray.push(value);
-    } else if (!isChecked && valuePosition > -1) {
-      valuesArray.splice(valuePosition, 1);
-    }
-    return valuesArray.join(',');
-  }
+    if (valueA.isPrototypeOf(valueB) || valueB.isPrototypeOf(valueA)) {
+      return false;
+    }
+    for (const key in valueA) {
+      if (!valueA.hasOwnProperty(key)) {
+        continue;
+      }
+      if (!valueB.hasOwnProperty(key)) {
+        return false;
+      }
+      if (valueA[key] === valueB[key]) {
+        continue;
+      }
+      if (typeof valueA[key] !== 'object' || !this.isEqual(valueA[key], 
valueB[key])) {
+        return false;
+      }
+    }
+    for (const key in valueB) {
+      if (valueB.hasOwnProperty(key) && !valueA.hasOwnProperty(key)) {
+        return false;
+      }
+    }
+    return true;
+  };
 
   isEnterPressed(event: KeyboardEvent): boolean {
     return event.keyCode === 13;

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