source: trip-planner-front/node_modules/@angular/material/esm2015/datepicker/datepicker-input-base.js@ 59329aa

/**
 * @license
 * Copyright Google LLC All Rights Reserved.
 *
 * Use of this source code is governed by an MIT-style license that can be
 * found in the LICENSE file at https://angular.io/license
 */
import { coerceBooleanProperty } from '@angular/cdk/coercion';
import { DOWN_ARROW } from '@angular/cdk/keycodes';
import { Directive, ElementRef, EventEmitter, Inject, Input, Optional, Output, } from '@angular/core';
import { DateAdapter, MAT_DATE_FORMATS, } from '@angular/material/core';
import { Subscription, Subject } from 'rxjs';
import { createMissingDateImplError } from './datepicker-errors';
/**
 * An event used for datepicker input and change events. We don't always have access to a native
 * input or change event because the event may have been triggered by the user clicking on the
 * calendar popup. For consistency, we always use MatDatepickerInputEvent instead.
 */
export class MatDatepickerInputEvent {
    constructor(
    /** Reference to the datepicker input component that emitted the event. */
    target, 
    /** Reference to the native input element associated with the datepicker input. */
    targetElement) {
        this.target = target;
        this.targetElement = targetElement;
        this.value = this.target.value;
    }
}
/** Base class for datepicker inputs. */
export class MatDatepickerInputBase {
    constructor(_elementRef, _dateAdapter, _dateFormats) {
        this._elementRef = _elementRef;
        this._dateAdapter = _dateAdapter;
        this._dateFormats = _dateFormats;
        /** Emits when a `change` event is fired on this `<input>`. */
        this.dateChange = new EventEmitter();
        /** Emits when an `input` event is fired on this `<input>`. */
        this.dateInput = new EventEmitter();
        /** Emits when the internal state has changed */
        this.stateChanges = new Subject();
        this._onTouched = () => { };
        this._validatorOnChange = () => { };
        this._cvaOnChange = () => { };
        this._valueChangesSubscription = Subscription.EMPTY;
        this._localeSubscription = Subscription.EMPTY;
        /** The form control validator for whether the input parses. */
        this._parseValidator = () => {
            return this._lastValueValid ?
                null : { 'matDatepickerParse': { 'text': this._elementRef.nativeElement.value } };
        };
        /** The form control validator for the date filter. */
        this._filterValidator = (control) => {
            const controlValue = this._dateAdapter.getValidDateOrNull(this._dateAdapter.deserialize(control.value));
            return !controlValue || this._matchesFilter(controlValue) ?
                null : { 'matDatepickerFilter': true };
        };
        /** The form control validator for the min date. */
        this._minValidator = (control) => {
            const controlValue = this._dateAdapter.getValidDateOrNull(this._dateAdapter.deserialize(control.value));
            const min = this._getMinDate();
            return (!min || !controlValue ||
                this._dateAdapter.compareDate(min, controlValue) <= 0) ?
                null : { 'matDatepickerMin': { 'min': min, 'actual': controlValue } };
        };
        /** The form control validator for the max date. */
        this._maxValidator = (control) => {
            const controlValue = this._dateAdapter.getValidDateOrNull(this._dateAdapter.deserialize(control.value));
            const max = this._getMaxDate();
            return (!max || !controlValue ||
                this._dateAdapter.compareDate(max, controlValue) >= 0) ?
                null : { 'matDatepickerMax': { 'max': max, 'actual': controlValue } };
        };
        /** Whether the last value set on the input was valid. */
        this._lastValueValid = false;
        if (typeof ngDevMode === 'undefined' || ngDevMode) {
            if (!this._dateAdapter) {
                throw createMissingDateImplError('DateAdapter');
            }
            if (!this._dateFormats) {
                throw createMissingDateImplError('MAT_DATE_FORMATS');
            }
        }
        // Update the displayed date when the locale changes.
        this._localeSubscription = _dateAdapter.localeChanges.subscribe(() => {
            this._assignValueProgrammatically(this.value);
        });
    }
    /** The value of the input. */
    get value() {
        return this._model ? this._getValueFromModel(this._model.selection) : this._pendingValue;
    }
    set value(value) {
        this._assignValueProgrammatically(value);
    }
    /** Whether the datepicker-input is disabled. */
    get disabled() { return !!this._disabled || this._parentDisabled(); }
    set disabled(value) {
        const newValue = coerceBooleanProperty(value);
        const element = this._elementRef.nativeElement;
        if (this._disabled !== newValue) {
            this._disabled = newValue;
            this.stateChanges.next(undefined);
        }
        // We need to null check the `blur` method, because it's undefined during SSR.
        // In Ivy static bindings are invoked earlier, before the element is attached to the DOM.
        // This can cause an error to be thrown in some browsers (IE/Edge) which assert that the
        // element has been inserted.
        if (newValue && this._isInitialized && element.blur) {
            // Normally, native input elements automatically blur if they turn disabled. This behavior
            // is problematic, because it would mean that it triggers another change detection cycle,
            // which then causes a changed after checked error if the input element was focused before.
            element.blur();
        }
    }
    /** Gets the base validator functions. */
    _getValidators() {
        return [this._parseValidator, this._minValidator, this._maxValidator, this._filterValidator];
    }
    /** Registers a date selection model with the input. */
    _registerModel(model) {
        this._model = model;
        this._valueChangesSubscription.unsubscribe();
        if (this._pendingValue) {
            this._assignValue(this._pendingValue);
        }
        this._valueChangesSubscription = this._model.selectionChanged.subscribe(event => {
            if (this._shouldHandleChangeEvent(event)) {
                const value = this._getValueFromModel(event.selection);
                this._lastValueValid = this._isValidValue(value);
                this._cvaOnChange(value);
                this._onTouched();
                this._formatValue(value);
                this.dateInput.emit(new MatDatepickerInputEvent(this, this._elementRef.nativeElement));
                this.dateChange.emit(new MatDatepickerInputEvent(this, this._elementRef.nativeElement));
            }
        });
    }
    ngAfterViewInit() {
        this._isInitialized = true;
    }
    ngOnChanges(changes) {
        if (dateInputsHaveChanged(changes, this._dateAdapter)) {
            this.stateChanges.next(undefined);
        }
    }
    ngOnDestroy() {
        this._valueChangesSubscription.unsubscribe();
        this._localeSubscription.unsubscribe();
        this.stateChanges.complete();
    }
    /** @docs-private */
    registerOnValidatorChange(fn) {
        this._validatorOnChange = fn;
    }
    /** @docs-private */
    validate(c) {
        return this._validator ? this._validator(c) : null;
    }
    // Implemented as part of ControlValueAccessor.
    writeValue(value) {
        this._assignValueProgrammatically(value);
    }
    // Implemented as part of ControlValueAccessor.
    registerOnChange(fn) {
        this._cvaOnChange = fn;
    }
    // Implemented as part of ControlValueAccessor.
    registerOnTouched(fn) {
        this._onTouched = fn;
    }
    // Implemented as part of ControlValueAccessor.
    setDisabledState(isDisabled) {
        this.disabled = isDisabled;
    }
    _onKeydown(event) {
        const isAltDownArrow = event.altKey && event.keyCode === DOWN_ARROW;
        if (isAltDownArrow && !this._elementRef.nativeElement.readOnly) {
            this._openPopup();
            event.preventDefault();
        }
    }
    _onInput(value) {
        const lastValueWasValid = this._lastValueValid;
        let date = this._dateAdapter.parse(value, this._dateFormats.parse.dateInput);
        this._lastValueValid = this._isValidValue(date);
        date = this._dateAdapter.getValidDateOrNull(date);
        if (!this._dateAdapter.sameDate(date, this.value)) {
            this._assignValue(date);
            this._cvaOnChange(date);
            this.dateInput.emit(new MatDatepickerInputEvent(this, this._elementRef.nativeElement));
        }
        else {
            // Call the CVA change handler for invalid values
            // since this is what marks the control as dirty.
            if (value && !this.value) {
                this._cvaOnChange(date);
            }
            if (lastValueWasValid !== this._lastValueValid) {
                this._validatorOnChange();
            }
        }
    }
    _onChange() {
        this.dateChange.emit(new MatDatepickerInputEvent(this, this._elementRef.nativeElement));
    }
    /** Handles blur events on the input. */
    _onBlur() {
        // Reformat the input only if we have a valid value.
        if (this.value) {
            this._formatValue(this.value);
        }
        this._onTouched();
    }
    /** Formats a value and sets it on the input element. */
    _formatValue(value) {
        this._elementRef.nativeElement.value =
            value ? this._dateAdapter.format(value, this._dateFormats.display.dateInput) : '';
    }
    /** Assigns a value to the model. */
    _assignValue(value) {
        // We may get some incoming values before the model was
        // assigned. Save the value so that we can assign it later.
        if (this._model) {
            this._assignValueToModel(value);
            this._pendingValue = null;
        }
        else {
            this._pendingValue = value;
        }
    }
    /** Whether a value is considered valid. */
    _isValidValue(value) {
        return !value || this._dateAdapter.isValid(value);
    }
    /**
     * Checks whether a parent control is disabled. This is in place so that it can be overridden
     * by inputs extending this one which can be placed inside of a group that can be disabled.
     */
    _parentDisabled() {
        return false;
    }
    /** Programmatically assigns a value to the input. */
    _assignValueProgrammatically(value) {
        value = this._dateAdapter.deserialize(value);
        this._lastValueValid = this._isValidValue(value);
        value = this._dateAdapter.getValidDateOrNull(value);
        this._assignValue(value);
        this._formatValue(value);
    }
    /** Gets whether a value matches the current date filter. */
    _matchesFilter(value) {
        const filter = this._getDateFilter();
        return !filter || filter(value);
    }
}
MatDatepickerInputBase.decorators = [
    { type: Directive }
];
MatDatepickerInputBase.ctorParameters = () => [
    { type: ElementRef },
    { type: DateAdapter, decorators: [{ type: Optional }] },
    { type: undefined, decorators: [{ type: Optional }, { type: Inject, args: [MAT_DATE_FORMATS,] }] }
];
MatDatepickerInputBase.propDecorators = {
    value: [{ type: Input }],
    disabled: [{ type: Input }],
    dateChange: [{ type: Output }],
    dateInput: [{ type: Output }]
};
/**
 * Checks whether the `SimpleChanges` object from an `ngOnChanges`
 * callback has any changes, accounting for date objects.
 */
export function dateInputsHaveChanged(changes, adapter) {
    const keys = Object.keys(changes);
    for (let key of keys) {
        const { previousValue, currentValue } = changes[key];
        if (adapter.isDateInstance(previousValue) && adapter.isDateInstance(currentValue)) {
            if (!adapter.sameDate(previousValue, currentValue)) {
                return true;
            }
        }
        else {
            return true;
        }
    }
    return false;
}
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* @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\nimport {BooleanInput, coerceBooleanProperty} from '@angular/cdk/coercion';\nimport {DOWN_ARROW} from '@angular/cdk/keycodes';\nimport {\n  Directive,\n  ElementRef,\n  EventEmitter,\n  Inject,\n  Input,\n  OnDestroy,\n  Optional,\n  Output,\n  AfterViewInit,\n  OnChanges,\n  SimpleChanges,\n} from '@angular/core';\nimport {\n  AbstractControl,\n  ControlValueAccessor,\n  ValidationErrors,\n  Validator,\n  ValidatorFn,\n} from '@angular/forms';\nimport {\n  DateAdapter,\n  MAT_DATE_FORMATS,\n  MatDateFormats,\n} from '@angular/material/core';\nimport {Subscription, Subject} from 'rxjs';\nimport {createMissingDateImplError} from './datepicker-errors';\nimport {\n  ExtractDateTypeFromSelection,\n  MatDateSelectionModel,\n  DateSelectionModelChange,\n} from './date-selection-model';\n\n/**\n * An event used for datepicker input and change events. We don't always have access to a native\n * input or change event because the event may have been triggered by the user clicking on the\n * calendar popup. For consistency, we always use MatDatepickerInputEvent instead.\n */\nexport class MatDatepickerInputEvent<D, S = unknown> {\n  /** The new value for the target datepicker input. */\n  value: D | null;\n\n  constructor(\n      /** Reference to the datepicker input component that emitted the event. */\n      public target: MatDatepickerInputBase<S, D>,\n      /** Reference to the native input element associated with the datepicker input. */\n      public targetElement: HTMLElement) {\n    this.value = this.target.value;\n  }\n}\n\n/** Function that can be used to filter out dates from a calendar. */\nexport type DateFilterFn<D> = (date: D | null) => boolean;\n\n/** Base class for datepicker inputs. */\n@Directive()\nexport abstract class MatDatepickerInputBase<S, D = ExtractDateTypeFromSelection<S>>\n  implements ControlValueAccessor, AfterViewInit, OnChanges, OnDestroy, Validator {\n\n  /** Whether the component has been initialized. */\n  private _isInitialized: boolean;\n\n  /** The value of the input. */\n  @Input()\n  get value(): D | null {\n    return this._model ? this._getValueFromModel(this._model.selection) : this._pendingValue;\n  }\n  set value(value: D | null) {\n    this._assignValueProgrammatically(value);\n  }\n  protected _model: MatDateSelectionModel<S, D> | undefined;\n\n  /** Whether the datepicker-input is disabled. */\n  @Input()\n  get disabled(): boolean { return !!this._disabled || this._parentDisabled(); }\n  set disabled(value: boolean) {\n    const newValue = coerceBooleanProperty(value);\n    const element = this._elementRef.nativeElement;\n\n    if (this._disabled !== newValue) {\n      this._disabled = newValue;\n      this.stateChanges.next(undefined);\n    }\n\n    // We need to null check the `blur` method, because it's undefined during SSR.\n    // In Ivy static bindings are invoked earlier, before the element is attached to the DOM.\n    // This can cause an error to be thrown in some browsers (IE/Edge) which assert that the\n    // element has been inserted.\n    if (newValue && this._isInitialized && element.blur) {\n      // Normally, native input elements automatically blur if they turn disabled. This behavior\n      // is problematic, because it would mean that it triggers another change detection cycle,\n      // which then causes a changed after checked error if the input element was focused before.\n      element.blur();\n    }\n  }\n  private _disabled: boolean;\n\n  /** Emits when a `change` event is fired on this `<input>`. */\n  @Output() readonly dateChange: EventEmitter<MatDatepickerInputEvent<D, S>> =\n      new EventEmitter<MatDatepickerInputEvent<D, S>>();\n\n  /** Emits when an `input` event is fired on this `<input>`. */\n  @Output() readonly dateInput: EventEmitter<MatDatepickerInputEvent<D, S>> =\n      new EventEmitter<MatDatepickerInputEvent<D, S>>();\n\n  /** Emits when the internal state has changed */\n  readonly stateChanges = new Subject<void>();\n\n  _onTouched = () => {};\n  _validatorOnChange = () => {};\n\n  private _cvaOnChange: (value: any) => void = () => {};\n  private _valueChangesSubscription = Subscription.EMPTY;\n  private _localeSubscription = Subscription.EMPTY;\n\n  /**\n   * Since the value is kept on the model which is assigned in an Input,\n   * we might get a value before we have a model. This property keeps track\n   * of the value until we have somewhere to assign it.\n   */\n  private _pendingValue: D | null;\n\n  /** The form control validator for whether the input parses. */\n  private _parseValidator: ValidatorFn = (): ValidationErrors | null => {\n    return this._lastValueValid ?\n        null : {'matDatepickerParse': {'text': this._elementRef.nativeElement.value}};\n  }\n\n  /** The form control validator for the date filter. */\n  private _filterValidator: ValidatorFn = (control: AbstractControl): ValidationErrors | null => {\n    const controlValue = this._dateAdapter.getValidDateOrNull(\n      this._dateAdapter.deserialize(control.value));\n    return !controlValue || this._matchesFilter(controlValue) ?\n        null : {'matDatepickerFilter': true};\n  }\n\n  /** The form control validator for the min date. */\n  private _minValidator: ValidatorFn = (control: AbstractControl): ValidationErrors | null => {\n    const controlValue = this._dateAdapter.getValidDateOrNull(\n      this._dateAdapter.deserialize(control.value));\n    const min = this._getMinDate();\n    return (!min || !controlValue ||\n        this._dateAdapter.compareDate(min, controlValue) <= 0) ?\n        null : {'matDatepickerMin': {'min': min, 'actual': controlValue}};\n  }\n\n  /** The form control validator for the max date. */\n  private _maxValidator: ValidatorFn = (control: AbstractControl): ValidationErrors | null => {\n    const controlValue = this._dateAdapter.getValidDateOrNull(\n      this._dateAdapter.deserialize(control.value));\n    const max = this._getMaxDate();\n    return (!max || !controlValue ||\n        this._dateAdapter.compareDate(max, controlValue) >= 0) ?\n        null : {'matDatepickerMax': {'max': max, 'actual': controlValue}};\n  }\n\n  /** Gets the base validator functions. */\n  protected _getValidators(): ValidatorFn[] {\n    return [this._parseValidator, this._minValidator, this._maxValidator, this._filterValidator];\n  }\n\n  /** Gets the minimum date for the input. Used for validation. */\n  abstract _getMinDate(): D | null;\n\n  /** Gets the maximum date for the input. Used for validation. */\n  abstract _getMaxDate(): D | null;\n\n  /** Gets the date filter function. Used for validation. */\n  protected abstract _getDateFilter(): DateFilterFn<D> | undefined;\n\n  /** Registers a date selection model with the input. */\n  _registerModel(model: MatDateSelectionModel<S, D>): void {\n    this._model = model;\n    this._valueChangesSubscription.unsubscribe();\n\n    if (this._pendingValue) {\n      this._assignValue(this._pendingValue);\n    }\n\n    this._valueChangesSubscription = this._model.selectionChanged.subscribe(event => {\n      if (this._shouldHandleChangeEvent(event)) {\n        const value = this._getValueFromModel(event.selection);\n        this._lastValueValid = this._isValidValue(value);\n        this._cvaOnChange(value);\n        this._onTouched();\n        this._formatValue(value);\n        this.dateInput.emit(new MatDatepickerInputEvent(this, this._elementRef.nativeElement));\n        this.dateChange.emit(new MatDatepickerInputEvent(this, this._elementRef.nativeElement));\n      }\n    });\n  }\n\n  /** Opens the popup associated with the input. */\n  protected abstract _openPopup(): void;\n\n  /** Assigns a value to the input's model. */\n  protected abstract _assignValueToModel(model: D | null): void;\n\n  /** Converts a value from the model into a native value for the input. */\n  protected abstract _getValueFromModel(modelValue: S): D | null;\n\n  /** Combined form control validator for this input. */\n  protected abstract _validator: ValidatorFn | null;\n\n  /** Predicate that determines whether the input should handle a particular change event. */\n  protected abstract _shouldHandleChangeEvent(event: DateSelectionModelChange<S>): boolean;\n\n  /** Whether the last value set on the input was valid. */\n  protected _lastValueValid = false;\n\n  constructor(\n      protected _elementRef: ElementRef<HTMLInputElement>,\n      @Optional() public _dateAdapter: DateAdapter<D>,\n      @Optional() @Inject(MAT_DATE_FORMATS) private _dateFormats: MatDateFormats) {\n\n    if (typeof ngDevMode === 'undefined' || ngDevMode) {\n      if (!this._dateAdapter) {\n        throw createMissingDateImplError('DateAdapter');\n      }\n      if (!this._dateFormats) {\n        throw createMissingDateImplError('MAT_DATE_FORMATS');\n      }\n    }\n\n    // Update the displayed date when the locale changes.\n    this._localeSubscription = _dateAdapter.localeChanges.subscribe(() => {\n      this._assignValueProgrammatically(this.value);\n    });\n  }\n\n  ngAfterViewInit() {\n    this._isInitialized = true;\n  }\n\n  ngOnChanges(changes: SimpleChanges) {\n    if (dateInputsHaveChanged(changes, this._dateAdapter)) {\n      this.stateChanges.next(undefined);\n    }\n  }\n\n  ngOnDestroy() {\n    this._valueChangesSubscription.unsubscribe();\n    this._localeSubscription.unsubscribe();\n    this.stateChanges.complete();\n  }\n\n  /** @docs-private */\n  registerOnValidatorChange(fn: () => void): void {\n    this._validatorOnChange = fn;\n  }\n\n  /** @docs-private */\n  validate(c: AbstractControl): ValidationErrors | null {\n    return this._validator ? this._validator(c) : null;\n  }\n\n  // Implemented as part of ControlValueAccessor.\n  writeValue(value: D): void {\n    this._assignValueProgrammatically(value);\n  }\n\n  // Implemented as part of ControlValueAccessor.\n  registerOnChange(fn: (value: any) => void): void {\n    this._cvaOnChange = fn;\n  }\n\n  // Implemented as part of ControlValueAccessor.\n  registerOnTouched(fn: () => void): void {\n    this._onTouched = fn;\n  }\n\n  // Implemented as part of ControlValueAccessor.\n  setDisabledState(isDisabled: boolean): void {\n    this.disabled = isDisabled;\n  }\n\n  _onKeydown(event: KeyboardEvent) {\n    const isAltDownArrow = event.altKey && event.keyCode === DOWN_ARROW;\n\n    if (isAltDownArrow && !this._elementRef.nativeElement.readOnly) {\n      this._openPopup();\n      event.preventDefault();\n    }\n  }\n\n  _onInput(value: string) {\n    const lastValueWasValid = this._lastValueValid;\n    let date = this._dateAdapter.parse(value, this._dateFormats.parse.dateInput);\n    this._lastValueValid = this._isValidValue(date);\n    date = this._dateAdapter.getValidDateOrNull(date);\n\n    if (!this._dateAdapter.sameDate(date, this.value)) {\n      this._assignValue(date);\n      this._cvaOnChange(date);\n      this.dateInput.emit(new MatDatepickerInputEvent(this, this._elementRef.nativeElement));\n    } else {\n      // Call the CVA change handler for invalid values\n      // since this is what marks the control as dirty.\n      if (value && !this.value) {\n        this._cvaOnChange(date);\n      }\n\n      if (lastValueWasValid !== this._lastValueValid) {\n        this._validatorOnChange();\n      }\n    }\n  }\n\n  _onChange() {\n    this.dateChange.emit(new MatDatepickerInputEvent(this, this._elementRef.nativeElement));\n  }\n\n  /** Handles blur events on the input. */\n  _onBlur() {\n    // Reformat the input only if we have a valid value.\n    if (this.value) {\n      this._formatValue(this.value);\n    }\n\n    this._onTouched();\n  }\n\n  /** Formats a value and sets it on the input element. */\n  protected _formatValue(value: D | null) {\n    this._elementRef.nativeElement.value =\n        value ? this._dateAdapter.format(value, this._dateFormats.display.dateInput) : '';\n  }\n\n  /** Assigns a value to the model. */\n  private _assignValue(value: D | null) {\n    // We may get some incoming values before the model was\n    // assigned. Save the value so that we can assign it later.\n    if (this._model) {\n      this._assignValueToModel(value);\n      this._pendingValue = null;\n    } else {\n      this._pendingValue = value;\n    }\n  }\n\n  /** Whether a value is considered valid. */\n  private _isValidValue(value: D | null): boolean {\n    return !value || this._dateAdapter.isValid(value);\n  }\n\n  /**\n   * Checks whether a parent control is disabled. This is in place so that it can be overridden\n   * by inputs extending this one which can be placed inside of a group that can be disabled.\n   */\n  protected _parentDisabled() {\n    return false;\n  }\n\n  /** Programmatically assigns a value to the input. */\n  protected _assignValueProgrammatically(value: D | null) {\n    value = this._dateAdapter.deserialize(value);\n    this._lastValueValid = this._isValidValue(value);\n    value = this._dateAdapter.getValidDateOrNull(value);\n    this._assignValue(value);\n    this._formatValue(value);\n  }\n\n  /** Gets whether a value matches the current date filter. */\n  _matchesFilter(value: D | null): boolean {\n    const filter = this._getDateFilter();\n    return !filter || filter(value);\n  }\n\n  // Accept `any` to avoid conflicts with other directives on `<input>` that\n  // may accept different types.\n  static ngAcceptInputType_value: any;\n  static ngAcceptInputType_disabled: BooleanInput;\n}\n\n/**\n * Checks whether the `SimpleChanges` object from an `ngOnChanges`\n * callback has any changes, accounting for date objects.\n */\nexport function dateInputsHaveChanged(\n  changes: SimpleChanges,\n  adapter: DateAdapter<unknown>): boolean {\n  const keys = Object.keys(changes);\n\n  for (let key of keys) {\n    const {previousValue, currentValue} = changes[key];\n\n    if (adapter.isDateInstance(previousValue) && adapter.isDateInstance(currentValue)) {\n      if (!adapter.sameDate(previousValue, currentValue)) {\n        return true;\n      }\n    } else {\n      return true;\n    }\n  }\n\n  return false;\n}\n"]}