fix(datepicker): start from date typed in input

src/framework/theme/components/calendar-kit/components/calendar-month-picker/calendar-month-picker.component.ts

@@ -19,6 +19,8 @@ import { NbCalendarCell, NbCalendarSize } from '../../model';
 import { NbCalendarMonthCellComponent } from './calendar-month-cell.component';
 import { NbDateService } from '../../services';
 
+export const MONTHS_IN_VIEW = 12;
+export const MONTHS_IN_COLUMN = 4;
 
 @Component({
   selector: 'nb-calendar-month-picker',
@@ -73,8 +75,8 @@ export class NbCalendarMonthPickerComponent<D, T> implements OnInit {
   }
 
   initMonths() {
-    const months: D[] = range(12).map(i => this.createMonthDateByIndex(i));
-    this.months = batch(months, 4);
+    const months: D[] = range(MONTHS_IN_VIEW).map(i => this.createMonthDateByIndex(i));
+    this.months = batch(months, MONTHS_IN_COLUMN);
   }
 
   onSelect(month: D) {

src/framework/theme/components/calendar-kit/components/calendar-year-picker/calendar-year-picker.component.ts

@@ -19,8 +19,8 @@ import { NbCalendarCell, NbCalendarSize } from '../../model';
 import { NbCalendarYearCellComponent } from './calendar-year-cell.component';
 import { NbDateService } from '../../services';
 
-
-const defaultYearCount = 20;
+export const YEARS_IN_VIEW = 20;
+export const YEARS_IN_COLUMN = 4;
 
 @Component({
   selector: 'nb-calendar-year-picker',
@@ -83,9 +83,9 @@ export class NbCalendarYearPickerComponent<D> implements OnChanges {
 
   initYears() {
     const selectedYear = this.dateService.getYear(this.year);
-    const startYear = Math.ceil(selectedYear - defaultYearCount / 2);
-    const years = range(defaultYearCount).map(i => this.createYearDateByIndex(i + startYear));
-    this.years = batch(years, 4);
+    const startYear = Math.ceil(selectedYear - YEARS_IN_VIEW / 2);
+    const years = range(YEARS_IN_VIEW).map(i => this.createYearDateByIndex(i + startYear));
+    this.years = batch(years, YEARS_IN_COLUMN);
   }
 
   onSelect(year) {

src/framework/theme/components/calendar-kit/components/index.ts

@@ -6,8 +6,16 @@
 
 export { NbCalendarHeaderComponent } from './calendar-header/calendar-header.component';
 export { NbCalendarDayCellComponent } from './calendar-day-picker/calendar-day-cell.component';
-export { NbCalendarYearPickerComponent } from './calendar-year-picker/calendar-year-picker.component';
-export { NbCalendarMonthPickerComponent } from './calendar-month-picker/calendar-month-picker.component';
+export {
+  NbCalendarYearPickerComponent,
+  YEARS_IN_VIEW,
+  YEARS_IN_COLUMN,
+} from './calendar-year-picker/calendar-year-picker.component';
+export {
+  NbCalendarMonthPickerComponent,
+  MONTHS_IN_VIEW,
+  MONTHS_IN_COLUMN,
+} from './calendar-month-picker/calendar-month-picker.component';
 export { NbCalendarDayPickerComponent } from './calendar-day-picker/calendar-day-picker.component';
 export { NbCalendarNavigationComponent } from './calendar-navigation/calendar-navigation.component';
 export { NbCalendarPageableNavigationComponent } from './calendar-navigation/calendar-pageable-navigation.component';

src/framework/theme/components/calendar/base-calendar.component.ts

@@ -6,8 +6,7 @@
 
 import { Component, EventEmitter, HostBinding, Input, OnInit, Output, Type } from '@angular/core';
 
-import { NbDateService, NbCalendarCell, NbCalendarSize, NbCalendarViewMode } from '../calendar-kit';
-
+import { NbDateService, NbCalendarCell, NbCalendarSize, NbCalendarViewMode, YEARS_IN_VIEW } from '../calendar-kit';
 
 /**
  * The basis for calendar and range calendar components.
@@ -139,6 +138,6 @@ export class NbBaseCalendarComponent<D, T> implements OnInit {
   }
 
   private changeVisibleYear(direction: number) {
-    this.visibleDate = this.dateService.addYear(this.visibleDate, direction * 20);
+    this.visibleDate = this.dateService.addYear(this.visibleDate, direction * YEARS_IN_VIEW);
   }
 }

src/framework/theme/components/datepicker/datepicker.component.ts

@@ -399,6 +399,7 @@ export class NbDatepickerComponent<D> extends NbBasePicker<D, D, NbCalendarCompo
     }
 
     if (date) {
+      this.visibleDate = date;
       this.picker.visibleDate = date;
       this.picker.date = date;
     }
@@ -409,7 +410,11 @@ export class NbDatepickerComponent<D> extends NbBasePicker<D, D, NbCalendarCompo
   }
 
   protected writeQueue() {
-    this.value = this.queue;
+    if (this.queue) {
+      const date = this.queue;
+      this.queue = null;
+      this.value = date;
+    }
   }
 }
 
@@ -449,7 +454,9 @@ export class NbRangepickerComponent<D> extends NbBasePicker<D, NbCalendarRange<D
     }
 
     if (range) {
-      this.picker.visibleDate = range && range.start;
+      const visibleDate = range && range.start;
+      this.visibleDate = visibleDate;
+      this.picker.visibleDate = visibleDate;
       this.picker.range = range;
     }
   }
@@ -463,6 +470,10 @@ export class NbRangepickerComponent<D> extends NbBasePicker<D, NbCalendarRange<D
   }
 
   protected writeQueue() {
-    this.value = this.queue;
+    if (this.queue) {
+      const range = this.queue;
+      this.queue = null;
+      this.value = range;
+    }
   }
 }

src/framework/theme/components/datepicker/datepicker.spec.ts

@@ -7,13 +7,13 @@
 import { ApplicationRef, Component, ViewChild } from '@angular/core';
 import { ComponentFixture, TestBed } from '@angular/core/testing';
 import { RouterTestingModule } from '@angular/router/testing';
-import { NbDatepickerDirective } from '@nebular/theme';
+import { skip } from 'rxjs/operators';
+import { NbCalendarRange, NbDatepickerDirective } from '@nebular/theme';
 
 import { NbDatepickerModule } from './datepicker.module';
 import { NbThemeModule } from '../../theme.module';
 import { NbLayoutModule } from '../layout/layout.module';
-import { NbDatepickerComponent } from './datepicker.component';
-
+import { NbDatepickerComponent, NbRangepickerComponent } from './datepicker.component';
 
 @Component({
   selector: 'nb-datepicker-test',
@@ -31,6 +31,22 @@ export class NbDatepickerTestComponent {
   @ViewChild(NbDatepickerDirective) datepickerDirective: NbDatepickerDirective<Date>;
 }
 
+@Component({
+  selector: 'nb-rangepicker-test',
+  template: `
+    <nb-layout>
+      <nb-layout-column>
+        <input [nbDatepicker]="rangepicker">
+        <nb-rangepicker #rangepicker></nb-rangepicker>
+      </nb-layout-column>
+    </nb-layout>
+  `,
+})
+export class NbRangepickerTestComponent {
+  @ViewChild(NbRangepickerComponent) rangepicker: NbRangepickerComponent<Date>;
+  @ViewChild(NbDatepickerDirective) datepickerDirective: NbDatepickerDirective<Date>;
+}
+
 describe('nb-datepicker', () => {
   let fixture: ComponentFixture<NbDatepickerTestComponent>;
   let appRef: ApplicationRef;
@@ -101,8 +117,7 @@ describe('nb-datepicker', () => {
     cell.dispatchEvent(new Event('click'));
   });
 
-  it('should select date typed in to the input', () => {
-    datepicker.visibleDate = new Date(2018, 8, 17);
+  it('should start from date typed into the input', () => {
     input.value = 'Sep 17, 2018';
     input.dispatchEvent(new Event('input'));
     showDatepicker();
@@ -113,6 +128,37 @@ describe('nb-datepicker', () => {
     expect(cell.textContent).toContain('17');
   });
 
+  it('should start from current date if input is empty', () => {
+    showDatepicker();
+    appRef.tick();
+    expect(overlay.querySelector('.day-cell.today')).toBeDefined();
+  });
+
+  it('should start from current date if input value is invalid', () => {
+    input.value = 'definitely not a date';
+    input.dispatchEvent(new Event('input'));
+    showDatepicker();
+    appRef.tick();
+    expect(overlay.querySelector('.day-cell.today')).toBeDefined();
+  });
+
+  it('should update visible date if input value changed', () => {
+    const initialDate = new Date(2000, 0, 1);
+    datepicker.visibleDate = initialDate;
+
+    const date = 17;
+    const month = 8;
+    const year = 2018;
+    input.value = 'Sep 17, 2018';
+    input.dispatchEvent(new Event('input'));
+    showDatepicker();
+    appRef.tick();
+
+    expect(datepicker.visibleDate.getDate()).toEqual(date);
+    expect(datepicker.visibleDate.getMonth()).toEqual(month);
+    expect(datepicker.visibleDate.getFullYear()).toEqual(year);
+  });
+
   it('should be valid if empty', () => {
     expect(datepickerDirective.validate()).toBe(null);
   });
@@ -125,3 +171,161 @@ describe('nb-datepicker', () => {
     expect(datepickerDirective.validate()).not.toBe(null);
   });
 });
+
+describe('nb-rangepicker', () => {
+  let fixture: ComponentFixture<NbRangepickerTestComponent>;
+  let appRef: ApplicationRef;
+  let rangepicker: NbRangepickerComponent<Date>;
+  let datepickerDirective: NbDatepickerDirective<Date>;
+  let overlay: HTMLElement;
+  let input: HTMLInputElement;
+
+  const showRangepicker = () => {
+    rangepicker.show();
+    appRef.tick();
+  };
+
+  beforeEach(() => {
+    TestBed.configureTestingModule({
+      imports: [
+        RouterTestingModule.withRoutes([]),
+        NbThemeModule.forRoot(),
+        NbLayoutModule,
+        NbDatepickerModule.forRoot(),
+      ],
+      declarations: [NbRangepickerTestComponent],
+    });
+
+    fixture = TestBed.createComponent(NbRangepickerTestComponent);
+    appRef = TestBed.get(ApplicationRef);
+
+    fixture.detectChanges();
+  });
+
+  beforeEach(() => {
+    rangepicker = fixture.componentInstance.rangepicker;
+    datepickerDirective = fixture.componentInstance.datepickerDirective;
+    overlay = fixture.nativeElement.querySelector('nb-layout');
+    input = fixture.nativeElement.querySelector('input');
+  });
+
+  it('should render calendar', () => {
+    showRangepicker();
+    const calendar = overlay.querySelector('nb-calendar-range');
+    expect(calendar).toBeTruthy();
+  });
+
+  it('should not render overlay on load', () => {
+    const datepickerContainer = overlay.querySelector('nb-datepicker-container');
+    expect(datepickerContainer).toBeNull();
+  });
+
+  it('should render overlay lazily', () => {
+    const datepickerContainer = overlay.querySelector('nb-datepicker-container');
+    expect(datepickerContainer).toBeNull();
+    showRangepicker();
+    const calendar = overlay.querySelector('nb-calendar-range');
+    expect(calendar).toBeTruthy();
+  });
+
+  it('should emit rangeChange when selected start date', (done) => {
+    rangepicker.visibleDate = new Date(2018, 8, 17);
+    showRangepicker();
+
+    rangepicker.rangeChange.subscribe((range: NbCalendarRange<Date>) => {
+      expect(range.start.getFullYear()).toEqual(2018);
+      expect(range.start.getMonth()).toEqual(8);
+      expect(range.start.getDate()).toEqual(1);
+      expect(range.end).not.toBeDefined();
+      done();
+    });
+
+    // click on Sep 1
+    const startCell = overlay.querySelectorAll('.day-cell')[6];
+    (startCell as HTMLElement).click();
+
+    fixture.detectChanges();
+  }, 5000);
+
+  it('should emit rangeChange when selected start and end dates', (done) => {
+    rangepicker.visibleDate = new Date(2018, 8, 17);
+    showRangepicker();
+
+    rangepicker.rangeChange
+      .pipe(skip(1))
+      .subscribe((range: NbCalendarRange<Date>) => {
+        expect(range.start.getFullYear()).toEqual(2018);
+        expect(range.end.getFullYear()).toEqual(2018);
+        expect(range.start.getMonth()).toEqual(8);
+        expect(range.end.getMonth()).toEqual(8);
+        expect(range.start.getDate()).toEqual(1);
+        expect(range.end.getDate()).toEqual(3);
+        done();
+      });
+
+    // click on Sep 1
+    const startCell = overlay.querySelectorAll('.day-cell')[6];
+    (startCell as HTMLElement).click();
+    // click on Sep 3
+    const endCell = overlay.querySelectorAll('.day-cell')[8];
+    (endCell as HTMLElement).click();
+
+    fixture.detectChanges();
+  }, 5000);
+
+  it('should start from date typed into the input', () => {
+    input.value = 'Sep 17, 2018 - Sep 19, 2018';
+    input.dispatchEvent(new Event('input'));
+    showRangepicker();
+    appRef.tick();
+
+    const startCell = overlay.querySelector('.day-cell.in-range.start');
+    const endCell = overlay.querySelector('.day-cell.in-range.end');
+
+    expect(startCell.textContent).toContain('17');
+    expect(endCell.textContent).toContain('19');
+  });
+
+  it('should start from current date if input is empty', () => {
+    showRangepicker();
+    appRef.tick();
+    expect(overlay.querySelector('.day-cell.today')).toBeDefined();
+  });
+
+  it('should start from current date if input value is invalid', () => {
+    input.value = 'definitely not a date';
+    input.dispatchEvent(new Event('input'));
+    showRangepicker();
+    appRef.tick();
+    expect(overlay.querySelector('.day-cell.today')).toBeDefined();
+  });
+
+  it('should set visible date to start date if input value changed', () => {
+    const initialDate = new Date(2000, 0, 1);
+    rangepicker.visibleDate = initialDate;
+
+    const date = 17;
+    const month = 8;
+    const year = 2018;
+    input.value = 'Sep 17, 2018 - Sep 19, 2018';
+    input.dispatchEvent(new Event('input'));
+    appRef.tick();
+    showRangepicker();
+
+    expect(rangepicker.visibleDate.getDate()).toEqual(date);
+    expect(rangepicker.visibleDate.getMonth()).toEqual(month);
+    expect(rangepicker.visibleDate.getFullYear()).toEqual(year);
+  });
+
+  it('should be valid if empty', () => {
+    expect(datepickerDirective.validate()).toBe(null);
+  });
+
+  it('should not be valid if empty contain incorrectly formatted date', () => {
+    input.value = 'somecurruptedinput';
+    input.dispatchEvent(new Event('input'));
+    showRangepicker();
+
+    expect(datepickerDirective.validate()).not.toBe(null);
+  });
+});