Added more tests

src/app/shared/form/builder/parsers/row-parser.spec.ts

@@ -9,6 +9,13 @@ describe('RowParser test suite', () => {
   let row1: FormRowModel;
   let row2: FormRowModel;
   let row3: FormRowModel;
+  let row4: FormRowModel;
+  let row5: FormRowModel;
+  let row6: FormRowModel;
+  let row7: FormRowModel;
+  let row8: FormRowModel;
+  let row9: FormRowModel;
+  let row10: FormRowModel;
 
   const scopeUUID = 'testScopeUUID';
   const initFormValues = {};
@@ -77,9 +84,10 @@ describe('RowParser test suite', () => {
             }
           ],
           languageCodes: []
-        }
+        } as FormFieldModel
       ]
     } as FormRowModel;
+
     row3 = {
       fields: [
         {
@@ -96,7 +104,7 @@ describe('RowParser test suite', () => {
             }
           ],
           languageCodes: []
-        },
+        } as FormFieldModel,
         {
           input: {type: 'onebox'},
           label: 'Other title',
@@ -112,14 +120,248 @@ describe('RowParser test suite', () => {
             }
           ],
           languageCodes: []
-        }
+        } as FormFieldModel
       ]
     } as FormRowModel;
 
+    row4 = {
+      fields: [
+        {
+          input: {
+            type: 'dropdown'
+          },
+          label: 'Type',
+          mandatory: 'false',
+          repeatable: false,
+          hints: 'Select the tyupe.',
+          selectableMetadata: [
+            {
+              metadata: 'type',
+              authority: 'common_types_dataset',
+              closed: false
+            }
+          ],
+          languageCodes: []
+        } as FormFieldModel,
+        {
+          input: {type: 'series'},
+          label: 'Series/Report No.',
+          mandatory: 'false',
+          repeatable: false,
+          hints: 'Enter the series and number assigned to this item by your community.',
+          selectableMetadata: [
+            {
+              metadata: 'series',
+            }
+          ],
+          languageCodes: []
+        } as FormFieldModel
+      ]
+    } as FormRowModel;
+
+    row5 = {
+      fields: [
+        {
+          input: {
+            type: 'lookup-name'
+          },
+          label: 'Author',
+          mandatory: 'false',
+          repeatable: false,
+          hints: 'Enter the name of the author.',
+          selectableMetadata: [
+            {
+              metadata: 'author',
+              authority: 'RPAuthority',
+              closed: false
+            }
+          ],
+          languageCodes: []
+        } as FormFieldModel
+      ]
+    } as FormRowModel;
+
+    row6 = {
+      fields: [
+        {
+          input: {
+            type: 'list'
+          },
+          label: 'Type',
+          mandatory: 'false',
+          repeatable: true,
+          hints: 'Select the type.',
+          selectableMetadata: [
+            {
+              metadata: 'type',
+              authority: 'type_programme',
+              closed: false
+            }
+          ],
+          languageCodes: []
+        } as FormFieldModel
+      ]
+    } as FormRowModel;
+
+    row7 = {
+      fields: [
+        {
+          input: {
+            type: 'date'
+          },
+          label: 'Date of Issue.',
+          mandatory: 'true',
+          repeatable: false,
+          hints: 'Please give the date of previous publication or public distribution. You can leave out the day and/or month if they aren\'t applicable.',
+          mandatoryMessage: 'You must enter at least the year.',
+          selectableMetadata: [
+            {
+              metadata: 'date',
+            }
+          ],
+          languageCodes: []
+        } as FormFieldModel
+      ]
+    } as FormRowModel;
+
+    row8 = {
+      fields: [
+        {
+          input: {
+            type: 'tag'
+          },
+          label: 'Keywords',
+          mandatory: 'false',
+          repeatable: false,
+          hints: 'Local controlled vocabulary.',
+          selectableMetadata: [
+            {
+              metadata: 'subject',
+              authority: 'JOURNALAuthority',
+              closed: false
+            }
+          ],
+          languageCodes: []
+        } as FormFieldModel
+      ]
+    } as FormRowModel;
+
+    row9 = {
+      fields: [
+        {
+          input: {
+            type: 'textarea'
+          },
+          label: 'Description',
+          mandatory: 'false',
+          repeatable: false,
+          hints: 'Enter a description.',
+          selectableMetadata: [
+            {
+              metadata: 'description'
+            }
+          ],
+          languageCodes: []
+        } as FormFieldModel
+      ]
+    } as FormRowModel;
+
+    row10 = {
+      fields: [
+        {
+          input: {
+            type: 'group'
+          },
+          rows: [
+            {
+              fields: [
+                {
+                  input: {
+                    type: 'onebox'
+                  },
+                  label: 'Author',
+                  mandatory: 'false',
+                  repeatable: false,
+                  hints: 'Enter the name of the author.',
+                  selectableMetadata: [
+                    {
+                      metadata: 'author'
+                    }
+                  ],
+                  languageCodes: []
+                },
+                {
+                  input: {
+                    type: 'onebox'
+                  },
+                  label: 'Affiliation',
+                  mandatory: false,
+                  repeatable: true,
+                  hints: 'Enter the affiliation of the author.',
+                  selectableMetadata: [
+                    {
+                      metadata: 'affiliation'
+                    }
+                  ],
+                  languageCodes: []
+                }
+              ]
+            }
+          ],
+          label: 'Authors',
+          mandatory: 'true',
+          repeatable: false,
+          mandatoryMessage: 'Entering at least the first author is mandatory.',
+          hints: 'Enter the names of the authors of this item.',
+          selectableMetadata: [
+            {
+              metadata: 'author'
+            }
+          ],
+          languageCodes: []
+        } as FormFieldModel
+      ]
+    } as FormRowModel;
   });
 
   it('should init parser properly', () => {
-    const parser = new RowParser(row1, scopeUUID, initFormValues, submissionScope, readOnly);
+    let parser = new RowParser(row1, scopeUUID, initFormValues, submissionScope, readOnly);
+
+    expect(parser instanceof RowParser).toBe(true);
+
+    parser = new RowParser(row2, scopeUUID, initFormValues, submissionScope, readOnly);
+
+    expect(parser instanceof RowParser).toBe(true);
+
+    parser = new RowParser(row3, scopeUUID, initFormValues, submissionScope, readOnly);
+
+    expect(parser instanceof RowParser).toBe(true);
+
+    parser = new RowParser(row4, scopeUUID, initFormValues, submissionScope, readOnly);
+
+    expect(parser instanceof RowParser).toBe(true);
+
+    parser = new RowParser(row5, scopeUUID, initFormValues, submissionScope, readOnly);
+
+    expect(parser instanceof RowParser).toBe(true);
+
+    parser = new RowParser(row6, scopeUUID, initFormValues, submissionScope, readOnly);
+
+    expect(parser instanceof RowParser).toBe(true);
+
+    parser = new RowParser(row7, scopeUUID, initFormValues, submissionScope, readOnly);
+
+    expect(parser instanceof RowParser).toBe(true);
+
+    parser = new RowParser(row8, scopeUUID, initFormValues, submissionScope, readOnly);
+
+    expect(parser instanceof RowParser).toBe(true);
+
+    parser = new RowParser(row9, scopeUUID, initFormValues, submissionScope, readOnly);
+
+    expect(parser instanceof RowParser).toBe(true);
+
+    parser = new RowParser(row10, scopeUUID, initFormValues, submissionScope, readOnly);
 
     expect(parser instanceof RowParser).toBe(true);
   });

src/app/shared/form/form.component.spec.ts

@@ -1,13 +1,16 @@
-// Load the implementations that should be tested
 import { ChangeDetectorRef, Component, CUSTOM_ELEMENTS_SCHEMA } from '@angular/core';
 import { async, ComponentFixture, inject, TestBed, } from '@angular/core/testing';
 import { CommonModule } from '@angular/common';
 import { BrowserModule } from '@angular/platform-browser';
-import { FormControl, FormGroup, FormsModule, ReactiveFormsModule } from '@angular/forms';
+import { FormControl, FormsModule, ReactiveFormsModule } from '@angular/forms';
-
-import { Observable } from 'rxjs/Observable';
 import 'rxjs/add/observable/of';
-import { DynamicFormControlModel, DynamicFormValidationService, DynamicInputModel } from '@ng-dynamic-forms/core';
+import {
+  DynamicFormArrayModel,
+  DynamicFormControlEvent,
+  DynamicFormControlModel,
+  DynamicFormValidationService,
+  DynamicInputModel
+} from '@ng-dynamic-forms/core';
 import { Store } from '@ngrx/store';
 import { NgbModule } from '@ng-bootstrap/ng-bootstrap';
 import { TranslateModule } from '@ngx-translate/core';
@@ -16,6 +19,9 @@ import { FormComponent } from './form.component';
 import { FormService } from './form.service';
 import { FormBuilderService } from './builder/form-builder.service';
 import { FormState } from './form.reducers';
+import { FormChangeAction, FormStatusChangeAction } from './form.actions';
+import { MockStore } from '../testing/mock-store';
+import { FormFieldMetadataValueObject } from './builder/models/form-field-metadata-value.model';
 
 function createTestComponent<T>(html: string, type: { new(...args: any[]): T }): ComponentFixture<T> {
   TestBed.overrideComponent(type, {
@@ -76,33 +82,47 @@ export const TEST_FORM_MODEL = [
   ),
 ];
 
-export const TEST_FORM_GROUP = {
+export const TEST_FORM_MODEL_WITH_ARRAY = [
-  dc_title: new FormControl(),
+  new DynamicFormArrayModel({
-  dc_title_alternative: new FormControl(),
-  dc_publisher: new FormControl(),
-  dc_identifier_citation: new FormControl(),
-  dc_identifier_issn: new FormControl()
-}
 
-describe('Form component', () => {
+    id: 'bootstrapFormArray',
+    initialCount: 1,
+    label: 'Form Array',
+    groupFactory: () => {
+      return [
+        new DynamicInputModel({
+
+          id: 'bootstrapArrayGroupInput',
+          placeholder: 'example array group input',
+          readOnly: false
+        })
+      ];
+    }
+  })
+];
+
+describe('FormComponent test suite', () => {
 
   let testComp: TestComponent;
+  let formComp: FormComponent;
   let testFixture: ComponentFixture<TestComponent>;
+  let formFixture: ComponentFixture<FormComponent>;
+  const formState: FormState = {
+    testForm: {
+      data: {
+        dc_title: null,
+        dc_title_alternative: null,
+        dc_publisher: null,
+        dc_identifier_citation: null,
+        dc_identifier_issn: null
+      },
+      valid: false,
+      errors: []
+    }
+  };
   let html;
-  const formServiceStub = {
-    getFormData: (formId) => Observable.of([])
-  }
-  const formBuilderServiceStub = {
-    createFormGroup: (formModel) => new FormGroup(TEST_FORM_GROUP)
-  }
-  const submissionFormsConfigServiceStub = {};
 
-  const store: Store<FormState> = jasmine.createSpyObj('store', {
+  const store: MockStore<FormState> = new MockStore<FormState>(formState);
-    /* tslint:disable:no-empty */
-    dispatch: {},
-    /* tslint:enable:no-empty */
-    select: Observable.of({})
-  });
 
   // async beforeEach
   beforeEach(async(() => {
@@ -135,23 +155,265 @@ describe('Form component', () => {
 
   }));
 
-  // synchronous beforeEach
+  describe('', () => {
-  beforeEach(() => {
+    // synchronous beforeEach
-    html = `
+    beforeEach(() => {
-      <ds-form *ngIf="formModel" #formRef="formComponent"
+      html = `
-               [formId]="formId"
+        <ds-form *ngIf="formModel" #formRef="formComponent"
-               [formModel]="formModel"
+                 [formId]="formId"
-               [displaySubmit]="displaySubmit"></ds-form>`;
+                 [formModel]="formModel"
+                 [displaySubmit]="displaySubmit"></ds-form>`;
 
-    testFixture = createTestComponent(html, TestComponent) as ComponentFixture<TestComponent>;
+      testFixture = createTestComponent(html, TestComponent) as ComponentFixture<TestComponent>;
-    testComp = testFixture.componentInstance;
+      testComp = testFixture.componentInstance;
+    });
+
+    it('should create FormComponent', inject([FormComponent], (app: FormComponent) => {
+
+      expect(app).toBeDefined();
+    }));
   });
 
-  it('should create Form Component', inject([FormComponent], (app: FormComponent) => {
+  describe('', () => {
+    beforeEach(() => {
 
-    expect(app).toBeDefined();
+      formFixture = TestBed.createComponent(FormComponent);
-  }));
+      formComp = formFixture.componentInstance; // FormComponent test instance
+      formComp.formId = 'testForm';
+      formComp.formModel = TEST_FORM_MODEL;
+      formComp.displaySubmit = false;
+      formFixture.detectChanges();
+      spyOn(store, 'dispatch');
+    });
 
+    afterEach(() => {
+      formFixture.destroy();
+      formComp = null;
+    });
+
+    it('should dispatch a FormStatusChangeAction when Form group status changes', () => {
+      const control = formComp.formGroup.get(['dc_title']);
+      control.setValue('Test Title');
+
+      expect(store.dispatch).toHaveBeenCalledWith(new FormStatusChangeAction('testForm', formComp.formGroup.valid));
+
+    });
+
+    it('should display form errors when errors are added to the state', () => {
+      const errors = [{
+        fieldId: 'dc_title',
+        message: 'error.validation.required'
+      }];
+
+      formState.testForm.errors = errors;
+      store.nextState(formState);
+      formFixture.detectChanges();
+
+      expect((formComp as any).formErrors).toEqual(errors);
+
+    });
+
+    it('should remove form errors when errors are empty in the state', () => {
+      (formComp as any).formErrors = [{
+        fieldId: 'dc_title',
+        message: 'error.validation.required'
+      }];
+      const errors = [];
+
+      formState.testForm.errors = errors;
+      store.nextState(formState);
+      formFixture.detectChanges();
+
+      expect((formComp as any).formErrors).toEqual(errors);
+
+    });
+
+    it('should dispatch FormChangeAction on form change', inject([FormBuilderService], (service: FormBuilderService) => {
+      const event = {
+        $event: new FormFieldMetadataValueObject('Test Title'),
+        context: null,
+        control: formComp.formGroup.get('dc_title'),
+        group: formComp.formGroup,
+        model: formComp.formModel[0],
+        type: 'change'
+      } as DynamicFormControlEvent;
+
+      spyOn(formComp.change, 'emit');
+
+      formComp.onChange(event);
+
+      expect(store.dispatch).toHaveBeenCalledWith(new FormChangeAction('testForm', service.getValueFromModel(formComp.formModel)));
+      expect(formComp.change.emit).toHaveBeenCalled();
+    }));
+
+    it('should emit change on form change', inject([FormBuilderService], (service: FormBuilderService) => {
+      const event = {
+        $event: new FormFieldMetadataValueObject('Test Title'),
+        context: null,
+        control: formComp.formGroup.get('dc_title'),
+        group: formComp.formGroup,
+        model: formComp.formModel[0],
+        type: 'change'
+      } as DynamicFormControlEvent;
+
+      spyOn(formComp.change, 'emit');
+
+      formComp.onChange(event);
+
+      expect(formComp.change.emit).toHaveBeenCalled();
+    }));
+
+    it('should not emit change Event on form change when emitChange is false', inject([FormBuilderService], (service: FormBuilderService) => {
+      const event = {
+        $event: new FormFieldMetadataValueObject('Test Title'),
+        context: null,
+        control: formComp.formGroup.get('dc_title'),
+        group: formComp.formGroup,
+        model: formComp.formModel[0],
+        type: 'change'
+      } as DynamicFormControlEvent;
+
+      formComp.emitChange = false;
+      spyOn(formComp.change, 'emit');
+
+      formComp.onChange(event);
+
+      expect(formComp.change.emit).not.toHaveBeenCalled();
+    }));
+
+    it('should emit blur Event on blur', () => {
+      const event = {
+        $event: new FocusEvent('blur'),
+        context: null,
+        control: formComp.formGroup.get('dc_title'),
+        group: formComp.formGroup,
+        model: formComp.formModel[0],
+        type: 'blur'
+      } as DynamicFormControlEvent;
+
+      spyOn(formComp.blur, 'emit');
+
+      formComp.onBlur(event);
+
+      expect(formComp.blur.emit).toHaveBeenCalled();
+    });
+
+    it('should emit focus Event on focus', () => {
+      const event = {
+        $event: new FocusEvent('focus'),
+        context: null,
+        control: formComp.formGroup.get('dc_title'),
+        group: formComp.formGroup,
+        model: formComp.formModel[0],
+        type: 'focus'
+      } as DynamicFormControlEvent;
+
+      spyOn(formComp.focus, 'emit');
+
+      formComp.onFocus(event);
+
+      expect(formComp.focus.emit).toHaveBeenCalled();
+    });
+
+    it('should return Observable of form status', () => {
+
+      const control = formComp.formGroup.get(['dc_title']);
+      control.setValue('Test Title');
+      formState.testForm.valid = true;
+      store.nextState(formState);
+      formFixture.detectChanges();
+
+      formComp.isValid().subscribe((valid) => {
+        expect(valid).toBe(true);
+      });
+    });
+
+    it('should emit submit Event on form submit whether the form is valid', () => {
+
+      const control = formComp.formGroup.get(['dc_title']);
+      control.setValue('Test Title');
+      formState.testForm.valid = true;
+      spyOn(formComp.submit, 'emit');
+
+      store.nextState(formState);
+      formFixture.detectChanges();
+
+      formComp.onSubmit();
+      expect(formComp.submit.emit).toHaveBeenCalled();
+    });
+
+    it('should not emit submit Event on form submit whether the form is not valid', () => {
+
+      spyOn((formComp as any).formService, 'validateAllFormFields');
+
+      store.nextState(formState);
+      formFixture.detectChanges();
+
+      formComp.onSubmit();
+      expect((formComp as any).formService.validateAllFormFields).toHaveBeenCalled();
+    });
+
+    it('should reset form group', () => {
+
+      spyOn(formComp.formGroup, 'reset');
+
+      formComp.reset();
+
+      expect(formComp.formGroup.reset).toHaveBeenCalled();
+    });
+  });
+
+  describe('', () => {
+    beforeEach(() => {
+
+      formFixture = TestBed.createComponent(FormComponent);
+      formComp = formFixture.componentInstance; // FormComponent test instance
+      formComp.formId = 'testFormArray';
+      formComp.formModel = TEST_FORM_MODEL_WITH_ARRAY;
+      formComp.displaySubmit = false;
+      formFixture.detectChanges();
+      spyOn(store, 'dispatch');
+    });
+
+    afterEach(() => {
+      formFixture.destroy();
+      formComp = null;
+    });
+
+    it('should return ReadOnly property from array item', inject([FormBuilderService], (service: FormBuilderService) => {
+      const readOnly = formComp.isItemReadOnly(formComp.formModel[0] as DynamicFormArrayModel, 0);
+
+      expect(readOnly).toBe(false);
+    }));
+
+    it('should dispatch FormChangeAction when an item has been added to an array', inject([FormBuilderService], (service: FormBuilderService) => {
+      formComp.insertItem(new Event('click'), formComp.formModel[0] as DynamicFormArrayModel, 1);
+
+      expect(store.dispatch).toHaveBeenCalledWith(new FormChangeAction('testFormArray', service.getValueFromModel(formComp.formModel)));
+    }));
+
+    it('should emit addArrayItem Event when an item has been added to an array', inject([FormBuilderService], (service: FormBuilderService) => {
+      spyOn(formComp.addArrayItem, 'emit');
+
+      formComp.insertItem(new Event('click'), formComp.formModel[0] as DynamicFormArrayModel, 1);
+
+      expect(formComp.addArrayItem.emit).toHaveBeenCalled();
+    }));
+
+    it('should dispatch FormChangeAction when an item has been removed from an array', inject([FormBuilderService], (service: FormBuilderService) => {
+      formComp.removeItem(new Event('click'), formComp.formModel[0] as DynamicFormArrayModel, 1);
+
+      expect(store.dispatch).toHaveBeenCalledWith(new FormChangeAction('testFormArray', service.getValueFromModel(formComp.formModel)));
+    }));
+
+    it('should emit removeArrayItem Event when an item has been removed from an array', inject([FormBuilderService], (service: FormBuilderService) => {
+      spyOn(formComp.removeArrayItem, 'emit');
+
+      formComp.removeItem(new Event('click'), formComp.formModel[0] as DynamicFormArrayModel, 1);
+
+      expect(formComp.removeArrayItem.emit).toHaveBeenCalled();
+    }));
+  })
 });
 
 // declare a test component

src/app/shared/form/form.component.ts

@@ -21,7 +21,7 @@ import {
 import { FormBuilderService } from './builder/form-builder.service';
 import { Observable } from 'rxjs/Observable';
 import { Subscription } from 'rxjs/Subscription';
-import { hasValue, isNotNull, isNull } from '../empty.util';
+import { hasValue, isNotEmpty, isNotNull, isNull } from '../empty.util';
 import { FormService } from './form.service';
 import { formObjectFromIdSelector } from './selectors';
 import { FormEntry, FormError } from './form.reducers';
@@ -154,7 +154,7 @@ export class FormComponent implements OnDestroy, OnInit {
 
     this.subs.push(
       this.store.select(formObjectFromIdSelector(this.formId))
-        .filter((formState: FormEntry) => !!formState && !isEmpty(formState.errors))
+        .filter((formState: FormEntry) => !!formState && (isNotEmpty(formState.errors) || isNotEmpty(this.formErrors)))
         .map((formState) => formState.errors)
         .distinctUntilChanged()
         // .delay(100) // this terrible delay is here to prevent the detection change error
@@ -223,7 +223,7 @@ export class FormComponent implements OnDestroy, OnInit {
   /**
    * Method to keep synchronized form controls values with form state
    */
-  private keepSync() {
+  private keepSync(): void {
     this.subs.push(this.formService.getFormData(this.formId)
       .subscribe((stateFormData) => {
         if (!Object.is(stateFormData, this.formGroup.value) && this.formGroup) {
@@ -232,15 +232,15 @@ export class FormComponent implements OnDestroy, OnInit {
       }));
   }
 
-  onBlur(event) {
+  onBlur(event: DynamicFormControlEvent): void {
     this.blur.emit(event);
   }
 
-  onFocus(event) {
+  onFocus(event: DynamicFormControlEvent): void {
     this.focus.emit(event);
   }
 
-  onChange(event) {
+  onChange(event: DynamicFormControlEvent): void {
     const action: FormChangeAction = new FormChangeAction(this.formId, this.formBuilderService.getValueFromModel(this.formModel));
 
     this.store.dispatch(action);
@@ -260,7 +260,7 @@ export class FormComponent implements OnDestroy, OnInit {
    * Method called on submit.
    * Emit a new submit Event whether the form is valid, mark fields with error otherwise
    */
-  onSubmit() {
+  onSubmit(): void {
     if (this.getFormGroupValidStatus()) {
       this.submit.emit(this.formService.getFormData(this.formId));
     } else {
@@ -271,7 +271,7 @@ export class FormComponent implements OnDestroy, OnInit {
   /**
    * Method to reset form fields
    */
-  reset() {
+  reset(): void {
     this.formGroup.reset();
   }
 
@@ -281,14 +281,14 @@ export class FormComponent implements OnDestroy, OnInit {
     return model.readOnly;
   }
 
-  removeItem($event, arrayContext: DynamicFormArrayModel, index: number) {
+  removeItem($event, arrayContext: DynamicFormArrayModel, index: number): void {
     const formArrayControl = this.formGroup.get(this.formBuilderService.getPath(arrayContext)) as FormArray;
     this.removeArrayItem.emit(this.getEvent($event, arrayContext, index, 'remove'));
     this.formBuilderService.removeFormArrayGroup(index, formArrayControl, arrayContext);
     this.store.dispatch(new FormChangeAction(this.formId, this.formBuilderService.getValueFromModel(this.formModel)));
   }
 
-  insertItem($event, arrayContext: DynamicFormArrayModel, index: number) {
+  insertItem($event, arrayContext: DynamicFormArrayModel, index: number): void {
     const formArrayControl = this.formGroup.get(this.formBuilderService.getPath(arrayContext)) as FormArray;
     this.formBuilderService.insertFormArrayGroup(index, formArrayControl, arrayContext);
     this.addArrayItem.emit(this.getEvent($event, arrayContext, index, 'add'));

src/app/shared/testing/mock-store.ts

@@ -9,12 +9,13 @@ export class MockStore<T> extends BehaviorSubject<T> {
   }
 
   dispatch = (action: Action): void => {
-    console.info();
+    // console.info(action);
-  }
+  };
 
   select = <R>(pathOrMapFn: any): Observable<T> => {
-    return Observable.of(this.getValue());
+    return this.asObservable()
-  }
+      .map((value) => pathOrMapFn.projector(value))
+  };
 
   nextState(_newState: T) {
     this.next(_newState);