| /** |
| * @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 { hasModifierKey, TAB } from '@angular/cdk/keycodes'; |
| import { Directive, ElementRef, EventEmitter, Inject, Input, Output } from '@angular/core'; |
| import { MAT_CHIPS_DEFAULT_OPTIONS } from './chip-default-options'; |
| import { MatChipList } from './chip-list'; |
| // Increasing integer for generating unique ids. |
| let nextUniqueId = 0; |
| /** |
| * Directive that adds chip-specific behaviors to an input element inside `<mat-form-field>`. |
| * May be placed inside or outside of an `<mat-chip-list>`. |
| */ |
| export class MatChipInput { |
| constructor(_elementRef, _defaultOptions) { |
| this._elementRef = _elementRef; |
| this._defaultOptions = _defaultOptions; |
| /** Whether the control is focused. */ |
| this.focused = false; |
| this._addOnBlur = false; |
| /** |
| * The list of key codes that will trigger a chipEnd event. |
| * |
| * Defaults to `[ENTER]`. |
| */ |
| this.separatorKeyCodes = this._defaultOptions.separatorKeyCodes; |
| /** Emitted when a chip is to be added. */ |
| this.chipEnd = new EventEmitter(); |
| /** The input's placeholder text. */ |
| this.placeholder = ''; |
| /** Unique id for the input. */ |
| this.id = `mat-chip-list-input-${nextUniqueId++}`; |
| this._disabled = false; |
| this._inputElement = this._elementRef.nativeElement; |
| } |
| /** Register input for chip list */ |
| set chipList(value) { |
| if (value) { |
| this._chipList = value; |
| this._chipList.registerInput(this); |
| } |
| } |
| /** |
| * Whether or not the chipEnd event will be emitted when the input is blurred. |
| */ |
| get addOnBlur() { return this._addOnBlur; } |
| set addOnBlur(value) { this._addOnBlur = coerceBooleanProperty(value); } |
| /** Whether the input is disabled. */ |
| get disabled() { return this._disabled || (this._chipList && this._chipList.disabled); } |
| set disabled(value) { this._disabled = coerceBooleanProperty(value); } |
| /** Whether the input is empty. */ |
| get empty() { return !this._inputElement.value; } |
| ngOnChanges() { |
| this._chipList.stateChanges.next(); |
| } |
| /** Utility method to make host definition/tests more clear. */ |
| _keydown(event) { |
| // Allow the user's focus to escape when they're tabbing forward. Note that we don't |
| // want to do this when going backwards, because focus should go back to the first chip. |
| if (event && event.keyCode === TAB && !hasModifierKey(event, 'shiftKey')) { |
| this._chipList._allowFocusEscape(); |
| } |
| this._emitChipEnd(event); |
| } |
| /** Checks to see if the blur should emit the (chipEnd) event. */ |
| _blur() { |
| if (this.addOnBlur) { |
| this._emitChipEnd(); |
| } |
| this.focused = false; |
| // Blur the chip list if it is not focused |
| if (!this._chipList.focused) { |
| this._chipList._blur(); |
| } |
| this._chipList.stateChanges.next(); |
| } |
| _focus() { |
| this.focused = true; |
| this._chipList.stateChanges.next(); |
| } |
| /** Checks to see if the (chipEnd) event needs to be emitted. */ |
| _emitChipEnd(event) { |
| if (!this._inputElement.value && !!event) { |
| this._chipList._keydown(event); |
| } |
| if (!event || this._isSeparatorKey(event)) { |
| this.chipEnd.emit({ input: this._inputElement, value: this._inputElement.value }); |
| if (event) { |
| event.preventDefault(); |
| } |
| } |
| } |
| _onInput() { |
| // Let chip list know whenever the value changes. |
| this._chipList.stateChanges.next(); |
| } |
| /** Focuses the input. */ |
| focus(options) { |
| this._inputElement.focus(options); |
| } |
| /** Checks whether a keycode is one of the configured separators. */ |
| _isSeparatorKey(event) { |
| return !hasModifierKey(event) && new Set(this.separatorKeyCodes).has(event.keyCode); |
| } |
| } |
| MatChipInput.decorators = [ |
| { type: Directive, args: [{ |
| selector: 'input[matChipInputFor]', |
| exportAs: 'matChipInput, matChipInputFor', |
| host: { |
| 'class': 'mat-chip-input mat-input-element', |
| '(keydown)': '_keydown($event)', |
| '(blur)': '_blur()', |
| '(focus)': '_focus()', |
| '(input)': '_onInput()', |
| '[id]': 'id', |
| '[attr.disabled]': 'disabled || null', |
| '[attr.placeholder]': 'placeholder || null', |
| '[attr.aria-invalid]': '_chipList && _chipList.ngControl ? _chipList.ngControl.invalid : null', |
| '[attr.aria-required]': '_chipList && _chipList.required || null', |
| } |
| },] } |
| ]; |
| MatChipInput.ctorParameters = () => [ |
| { type: ElementRef }, |
| { type: undefined, decorators: [{ type: Inject, args: [MAT_CHIPS_DEFAULT_OPTIONS,] }] } |
| ]; |
| MatChipInput.propDecorators = { |
| chipList: [{ type: Input, args: ['matChipInputFor',] }], |
| addOnBlur: [{ type: Input, args: ['matChipInputAddOnBlur',] }], |
| separatorKeyCodes: [{ type: Input, args: ['matChipInputSeparatorKeyCodes',] }], |
| chipEnd: [{ type: Output, args: ['matChipInputTokenEnd',] }], |
| placeholder: [{ type: Input }], |
| id: [{ type: Input }], |
| disabled: [{ type: Input }] |
| }; |
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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 {hasModifierKey, TAB} from '@angular/cdk/keycodes';\nimport {Directive, ElementRef, EventEmitter, Inject, Input, OnChanges, Output} from '@angular/core';\nimport {MatChipsDefaultOptions, MAT_CHIPS_DEFAULT_OPTIONS} from './chip-default-options';\nimport {MatChipList} from './chip-list';\nimport {MatChipTextControl} from './chip-text-control';\n\n\n/** Represents an input event on a `matChipInput`. */\nexport interface MatChipInputEvent {\n  /** The native `<input>` element that the event is being fired for. */\n  input: HTMLInputElement;\n\n  /** The value of the input. */\n  value: string;\n}\n\n// Increasing integer for generating unique ids.\nlet nextUniqueId = 0;\n\n/**\n * Directive that adds chip-specific behaviors to an input element inside `<mat-form-field>`.\n * May be placed inside or outside of an `<mat-chip-list>`.\n */\n@Directive({\n  selector: 'input[matChipInputFor]',\n  exportAs: 'matChipInput, matChipInputFor',\n  host: {\n    'class': 'mat-chip-input mat-input-element',\n    '(keydown)': '_keydown($event)',\n    '(blur)': '_blur()',\n    '(focus)': '_focus()',\n    '(input)': '_onInput()',\n    '[id]': 'id',\n    '[attr.disabled]': 'disabled || null',\n    '[attr.placeholder]': 'placeholder || null',\n    '[attr.aria-invalid]': '_chipList && _chipList.ngControl ? _chipList.ngControl.invalid : null',\n    '[attr.aria-required]': '_chipList && _chipList.required || null',\n  }\n})\nexport class MatChipInput implements MatChipTextControl, OnChanges {\n  /** Whether the control is focused. */\n  focused: boolean = false;\n  _chipList: MatChipList;\n\n  /** Register input for chip list */\n  @Input('matChipInputFor')\n  set chipList(value: MatChipList) {\n    if (value) {\n      this._chipList = value;\n      this._chipList.registerInput(this);\n    }\n  }\n\n  /**\n   * Whether or not the chipEnd event will be emitted when the input is blurred.\n   */\n  @Input('matChipInputAddOnBlur')\n  get addOnBlur(): boolean { return this._addOnBlur; }\n  set addOnBlur(value: boolean) { this._addOnBlur = coerceBooleanProperty(value); }\n  _addOnBlur: boolean = false;\n\n  /**\n   * The list of key codes that will trigger a chipEnd event.\n   *\n   * Defaults to `[ENTER]`.\n   */\n  @Input('matChipInputSeparatorKeyCodes')\n  separatorKeyCodes: readonly number[] | ReadonlySet<number> =\n      this._defaultOptions.separatorKeyCodes;\n\n  /** Emitted when a chip is to be added. */\n  @Output('matChipInputTokenEnd')\n  chipEnd: EventEmitter<MatChipInputEvent> = new EventEmitter<MatChipInputEvent>();\n\n  /** The input's placeholder text. */\n  @Input() placeholder: string = '';\n\n  /** Unique id for the input. */\n  @Input() id: string = `mat-chip-list-input-${nextUniqueId++}`;\n\n  /** Whether the input is disabled. */\n  @Input()\n  get disabled(): boolean { return this._disabled || (this._chipList && this._chipList.disabled); }\n  set disabled(value: boolean) { this._disabled = coerceBooleanProperty(value); }\n  private _disabled: boolean = false;\n\n  /** Whether the input is empty. */\n  get empty(): boolean { return !this._inputElement.value; }\n\n  /** The native input element to which this directive is attached. */\n  protected _inputElement: HTMLInputElement;\n\n  constructor(\n    protected _elementRef: ElementRef<HTMLInputElement>,\n    @Inject(MAT_CHIPS_DEFAULT_OPTIONS) private _defaultOptions: MatChipsDefaultOptions) {\n    this._inputElement = this._elementRef.nativeElement as HTMLInputElement;\n  }\n\n  ngOnChanges() {\n    this._chipList.stateChanges.next();\n  }\n\n  /** Utility method to make host definition/tests more clear. */\n  _keydown(event?: KeyboardEvent) {\n    // Allow the user's focus to escape when they're tabbing forward. Note that we don't\n    // want to do this when going backwards, because focus should go back to the first chip.\n    if (event && event.keyCode === TAB && !hasModifierKey(event, 'shiftKey')) {\n      this._chipList._allowFocusEscape();\n    }\n\n    this._emitChipEnd(event);\n  }\n\n  /** Checks to see if the blur should emit the (chipEnd) event. */\n  _blur() {\n    if (this.addOnBlur) {\n      this._emitChipEnd();\n    }\n    this.focused = false;\n    // Blur the chip list if it is not focused\n    if (!this._chipList.focused) {\n      this._chipList._blur();\n    }\n    this._chipList.stateChanges.next();\n  }\n\n  _focus() {\n    this.focused = true;\n    this._chipList.stateChanges.next();\n  }\n\n  /** Checks to see if the (chipEnd) event needs to be emitted. */\n  _emitChipEnd(event?: KeyboardEvent) {\n    if (!this._inputElement.value && !!event) {\n      this._chipList._keydown(event);\n    }\n    if (!event || this._isSeparatorKey(event)) {\n      this.chipEnd.emit({ input: this._inputElement, value: this._inputElement.value });\n\n      if (event) {\n        event.preventDefault();\n      }\n    }\n  }\n\n  _onInput() {\n    // Let chip list know whenever the value changes.\n    this._chipList.stateChanges.next();\n  }\n\n  /** Focuses the input. */\n  focus(options?: FocusOptions): void {\n    this._inputElement.focus(options);\n  }\n\n  /** Checks whether a keycode is one of the configured separators. */\n  private _isSeparatorKey(event: KeyboardEvent) {\n    return !hasModifierKey(event) && new Set(this.separatorKeyCodes).has(event.keyCode);\n  }\n\n  static ngAcceptInputType_addOnBlur: BooleanInput;\n  static ngAcceptInputType_disabled: BooleanInput;\n}\n"]} |