| /** |
| * @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 { Injectable, Optional, SkipSelf } from '@angular/core'; |
| import { DateAdapter } from '@angular/material/core'; |
| import { Subject } from 'rxjs'; |
| /** A class representing a range of dates. */ |
| export class DateRange { |
| constructor( |
| /** The start date of the range. */ |
| start, |
| /** The end date of the range. */ |
| end) { |
| this.start = start; |
| this.end = end; |
| } |
| } |
| /** |
| * A selection model containing a date selection. |
| * @docs-private |
| */ |
| export class MatDateSelectionModel { |
| constructor( |
| /** The current selection. */ |
| selection, _adapter) { |
| this.selection = selection; |
| this._adapter = _adapter; |
| this._selectionChanged = new Subject(); |
| /** Emits when the selection has changed. */ |
| this.selectionChanged = this._selectionChanged; |
| this.selection = selection; |
| } |
| /** |
| * Updates the current selection in the model. |
| * @param value New selection that should be assigned. |
| * @param source Object that triggered the selection change. |
| */ |
| updateSelection(value, source) { |
| const oldValue = this.selection; |
| this.selection = value; |
| this._selectionChanged.next({ selection: value, source, oldValue }); |
| } |
| ngOnDestroy() { |
| this._selectionChanged.complete(); |
| } |
| _isValidDateInstance(date) { |
| return this._adapter.isDateInstance(date) && this._adapter.isValid(date); |
| } |
| /** |
| * Clones the selection model. |
| * @deprecated To be turned into an abstract method. |
| * @breaking-change 12.0.0 |
| */ |
| clone() { |
| if (typeof ngDevMode === 'undefined' || ngDevMode) { |
| throw Error('Not implemented'); |
| } |
| return null; |
| } |
| } |
| MatDateSelectionModel.decorators = [ |
| { type: Injectable } |
| ]; |
| MatDateSelectionModel.ctorParameters = () => [ |
| { type: undefined }, |
| { type: DateAdapter } |
| ]; |
| /** |
| * A selection model that contains a single date. |
| * @docs-private |
| */ |
| export class MatSingleDateSelectionModel extends MatDateSelectionModel { |
| constructor(adapter) { |
| super(null, adapter); |
| } |
| /** |
| * Adds a date to the current selection. In the case of a single date selection, the added date |
| * simply overwrites the previous selection |
| */ |
| add(date) { |
| super.updateSelection(date, this); |
| } |
| /** Checks whether the current selection is valid. */ |
| isValid() { |
| return this.selection != null && this._isValidDateInstance(this.selection); |
| } |
| /** |
| * Checks whether the current selection is complete. In the case of a single date selection, this |
| * is true if the current selection is not null. |
| */ |
| isComplete() { |
| return this.selection != null; |
| } |
| /** Clones the selection model. */ |
| clone() { |
| const clone = new MatSingleDateSelectionModel(this._adapter); |
| clone.updateSelection(this.selection, this); |
| return clone; |
| } |
| } |
| MatSingleDateSelectionModel.decorators = [ |
| { type: Injectable } |
| ]; |
| MatSingleDateSelectionModel.ctorParameters = () => [ |
| { type: DateAdapter } |
| ]; |
| /** |
| * A selection model that contains a date range. |
| * @docs-private |
| */ |
| export class MatRangeDateSelectionModel extends MatDateSelectionModel { |
| constructor(adapter) { |
| super(new DateRange(null, null), adapter); |
| } |
| /** |
| * Adds a date to the current selection. In the case of a date range selection, the added date |
| * fills in the next `null` value in the range. If both the start and the end already have a date, |
| * the selection is reset so that the given date is the new `start` and the `end` is null. |
| */ |
| add(date) { |
| let { start, end } = this.selection; |
| if (start == null) { |
| start = date; |
| } |
| else if (end == null) { |
| end = date; |
| } |
| else { |
| start = date; |
| end = null; |
| } |
| super.updateSelection(new DateRange(start, end), this); |
| } |
| /** Checks whether the current selection is valid. */ |
| isValid() { |
| const { start, end } = this.selection; |
| // Empty ranges are valid. |
| if (start == null && end == null) { |
| return true; |
| } |
| // Complete ranges are only valid if both dates are valid and the start is before the end. |
| if (start != null && end != null) { |
| return this._isValidDateInstance(start) && this._isValidDateInstance(end) && |
| this._adapter.compareDate(start, end) <= 0; |
| } |
| // Partial ranges are valid if the start/end is valid. |
| return (start == null || this._isValidDateInstance(start)) && |
| (end == null || this._isValidDateInstance(end)); |
| } |
| /** |
| * Checks whether the current selection is complete. In the case of a date range selection, this |
| * is true if the current selection has a non-null `start` and `end`. |
| */ |
| isComplete() { |
| return this.selection.start != null && this.selection.end != null; |
| } |
| /** Clones the selection model. */ |
| clone() { |
| const clone = new MatRangeDateSelectionModel(this._adapter); |
| clone.updateSelection(this.selection, this); |
| return clone; |
| } |
| } |
| MatRangeDateSelectionModel.decorators = [ |
| { type: Injectable } |
| ]; |
| MatRangeDateSelectionModel.ctorParameters = () => [ |
| { type: DateAdapter } |
| ]; |
| /** @docs-private */ |
| export function MAT_SINGLE_DATE_SELECTION_MODEL_FACTORY(parent, adapter) { |
| return parent || new MatSingleDateSelectionModel(adapter); |
| } |
| /** |
| * Used to provide a single selection model to a component. |
| * @docs-private |
| */ |
| export const MAT_SINGLE_DATE_SELECTION_MODEL_PROVIDER = { |
| provide: MatDateSelectionModel, |
| deps: [[new Optional(), new SkipSelf(), MatDateSelectionModel], DateAdapter], |
| useFactory: MAT_SINGLE_DATE_SELECTION_MODEL_FACTORY, |
| }; |
| /** @docs-private */ |
| export function MAT_RANGE_DATE_SELECTION_MODEL_FACTORY(parent, adapter) { |
| return parent || new MatRangeDateSelectionModel(adapter); |
| } |
| /** |
| * Used to provide a range selection model to a component. |
| * @docs-private |
| */ |
| export const MAT_RANGE_DATE_SELECTION_MODEL_PROVIDER = { |
| provide: MatDateSelectionModel, |
| deps: [[new Optional(), new SkipSelf(), MatDateSelectionModel], DateAdapter], |
| useFactory: MAT_RANGE_DATE_SELECTION_MODEL_FACTORY, |
| }; |
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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 {FactoryProvider, Injectable, Optional, SkipSelf, OnDestroy} from '@angular/core';\nimport {DateAdapter} from '@angular/material/core';\nimport {Observable, Subject} from 'rxjs';\n\n/** A class representing a range of dates. */\nexport class DateRange<D> {\n  /**\n   * Ensures that objects with a `start` and `end` property can't be assigned to a variable that\n   * expects a `DateRange`\n   */\n  // tslint:disable-next-line:no-unused-variable\n  private _disableStructuralEquivalency: never;\n\n  constructor(\n    /** The start date of the range. */\n    readonly start: D | null,\n    /** The end date of the range. */\n    readonly end: D | null) {}\n}\n\n/**\n * Conditionally picks the date type, if a DateRange is passed in.\n * @docs-private\n */\nexport type ExtractDateTypeFromSelection<T> = T extends DateRange<infer D> ? D : NonNullable<T>;\n\n/**\n * Event emitted by the date selection model when its selection changes.\n * @docs-private\n */\nexport interface DateSelectionModelChange<S> {\n  /** New value for the selection. */\n  selection: S;\n\n  /** Object that triggered the change. */\n  source: unknown;\n\n  /** Previous value */\n  oldValue?: S;\n}\n\n/**\n * A selection model containing a date selection.\n * @docs-private\n */\n@Injectable()\nexport abstract class MatDateSelectionModel<S, D = ExtractDateTypeFromSelection<S>>\n    implements OnDestroy {\n  private _selectionChanged = new Subject<DateSelectionModelChange<S>>();\n\n  /** Emits when the selection has changed. */\n  selectionChanged: Observable<DateSelectionModelChange<S>> = this._selectionChanged;\n\n  protected constructor(\n    /** The current selection. */\n    readonly selection: S,\n    protected _adapter: DateAdapter<D>) {\n    this.selection = selection;\n  }\n\n  /**\n   * Updates the current selection in the model.\n   * @param value New selection that should be assigned.\n   * @param source Object that triggered the selection change.\n   */\n  updateSelection(value: S, source: unknown) {\n    const oldValue = (this as {selection: S}).selection;\n    (this as {selection: S}).selection = value;\n    this._selectionChanged.next({selection: value, source, oldValue});\n  }\n\n  ngOnDestroy() {\n    this._selectionChanged.complete();\n  }\n\n  protected _isValidDateInstance(date: D): boolean {\n    return this._adapter.isDateInstance(date) && this._adapter.isValid(date);\n  }\n\n  /** Adds a date to the current selection. */\n  abstract add(date: D | null): void;\n\n  /** Checks whether the current selection is valid. */\n  abstract isValid(): boolean;\n\n  /** Checks whether the current selection is complete. */\n  abstract isComplete(): boolean;\n\n  /**\n   * Clones the selection model.\n   * @deprecated To be turned into an abstract method.\n   * @breaking-change 12.0.0\n   */\n  clone(): MatDateSelectionModel<S, D> {\n    if (typeof ngDevMode === 'undefined' || ngDevMode) {\n      throw Error('Not implemented');\n    }\n\n    return null!;\n  }\n}\n\n/**\n * A selection model that contains a single date.\n * @docs-private\n */\n@Injectable()\nexport class MatSingleDateSelectionModel<D> extends MatDateSelectionModel<D | null, D> {\n  constructor(adapter: DateAdapter<D>) {\n    super(null, adapter);\n  }\n\n  /**\n   * Adds a date to the current selection. In the case of a single date selection, the added date\n   * simply overwrites the previous selection\n   */\n  add(date: D | null) {\n    super.updateSelection(date, this);\n  }\n\n  /** Checks whether the current selection is valid. */\n  isValid(): boolean {\n    return this.selection != null && this._isValidDateInstance(this.selection);\n  }\n\n  /**\n   * Checks whether the current selection is complete. In the case of a single date selection, this\n   * is true if the current selection is not null.\n   */\n  isComplete() {\n    return this.selection != null;\n  }\n\n  /** Clones the selection model. */\n  clone() {\n    const clone = new MatSingleDateSelectionModel<D>(this._adapter);\n    clone.updateSelection(this.selection, this);\n    return clone;\n  }\n}\n\n/**\n * A selection model that contains a date range.\n * @docs-private\n */\n@Injectable()\nexport class MatRangeDateSelectionModel<D> extends MatDateSelectionModel<DateRange<D>, D> {\n  constructor(adapter: DateAdapter<D>) {\n    super(new DateRange<D>(null, null), adapter);\n  }\n\n  /**\n   * Adds a date to the current selection. In the case of a date range selection, the added date\n   * fills in the next `null` value in the range. If both the start and the end already have a date,\n   * the selection is reset so that the given date is the new `start` and the `end` is null.\n   */\n  add(date: D | null): void {\n    let {start, end} = this.selection;\n\n    if (start == null) {\n      start = date;\n    } else if (end == null) {\n      end = date;\n    } else {\n      start = date;\n      end = null;\n    }\n\n    super.updateSelection(new DateRange<D>(start, end), this);\n  }\n\n  /** Checks whether the current selection is valid. */\n  isValid(): boolean {\n    const {start, end} = this.selection;\n\n    // Empty ranges are valid.\n    if (start == null && end == null) {\n      return true;\n    }\n\n    // Complete ranges are only valid if both dates are valid and the start is before the end.\n    if (start != null && end != null) {\n      return this._isValidDateInstance(start) && this._isValidDateInstance(end) &&\n             this._adapter.compareDate(start, end) <= 0;\n    }\n\n    // Partial ranges are valid if the start/end is valid.\n    return (start == null || this._isValidDateInstance(start)) &&\n           (end == null || this._isValidDateInstance(end));\n  }\n\n  /**\n   * Checks whether the current selection is complete. In the case of a date range selection, this\n   * is true if the current selection has a non-null `start` and `end`.\n   */\n  isComplete(): boolean {\n    return this.selection.start != null && this.selection.end != null;\n  }\n\n  /** Clones the selection model. */\n  clone() {\n    const clone = new MatRangeDateSelectionModel<D>(this._adapter);\n    clone.updateSelection(this.selection, this);\n    return clone;\n  }\n}\n\n/** @docs-private */\nexport function MAT_SINGLE_DATE_SELECTION_MODEL_FACTORY(\n    parent: MatSingleDateSelectionModel<unknown>, adapter: DateAdapter<unknown>) {\n  return parent || new MatSingleDateSelectionModel(adapter);\n}\n\n/**\n * Used to provide a single selection model to a component.\n * @docs-private\n */\nexport const MAT_SINGLE_DATE_SELECTION_MODEL_PROVIDER: FactoryProvider = {\n  provide: MatDateSelectionModel,\n  deps: [[new Optional(), new SkipSelf(), MatDateSelectionModel], DateAdapter],\n  useFactory: MAT_SINGLE_DATE_SELECTION_MODEL_FACTORY,\n};\n\n\n/** @docs-private */\nexport function MAT_RANGE_DATE_SELECTION_MODEL_FACTORY(\n    parent: MatSingleDateSelectionModel<unknown>, adapter: DateAdapter<unknown>) {\n  return parent || new MatRangeDateSelectionModel(adapter);\n}\n\n/**\n * Used to provide a range selection model to a component.\n * @docs-private\n */\nexport const MAT_RANGE_DATE_SELECTION_MODEL_PROVIDER: FactoryProvider = {\n  provide: MatDateSelectionModel,\n  deps: [[new Optional(), new SkipSelf(), MatDateSelectionModel], DateAdapter],\n  useFactory: MAT_RANGE_DATE_SELECTION_MODEL_FACTORY,\n};\n"]} |