| /** |
| * @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 { ActiveDescendantKeyManager } from '@angular/cdk/a11y'; |
| import { coerceBooleanProperty } from '@angular/cdk/coercion'; |
| import { ChangeDetectionStrategy, ChangeDetectorRef, Component, ContentChildren, ElementRef, EventEmitter, Inject, InjectionToken, Input, Output, TemplateRef, ViewChild, ViewEncapsulation, Directive, forwardRef, Host, NgZone, Optional, ViewContainerRef, NgModule } from '@angular/core'; |
| import { MAT_OPTION_PARENT_COMPONENT, MatOptgroup, MatOption, mixinDisableRipple, _countGroupLabelsBeforeOption, _getOptionScrollPosition, MatOptionSelectionChange, MatOptionModule, MatCommonModule } from '@angular/material/core'; |
| import { Directionality } from '@angular/cdk/bidi'; |
| import { DOWN_ARROW, ENTER, ESCAPE, TAB, UP_ARROW } from '@angular/cdk/keycodes'; |
| import { Overlay, OverlayConfig, OverlayModule } from '@angular/cdk/overlay'; |
| import { TemplatePortal } from '@angular/cdk/portal'; |
| import { DOCUMENT, CommonModule } from '@angular/common'; |
| import { filter, take, switchMap, delay, tap, map } from 'rxjs/operators'; |
| import { ViewportRuler } from '@angular/cdk/scrolling'; |
| import { NG_VALUE_ACCESSOR } from '@angular/forms'; |
| import { MatFormField } from '@angular/material/form-field'; |
| import { Subscription, defer, fromEvent, merge, of, Subject } from 'rxjs'; |
| |
| /** |
| * @fileoverview added by tsickle |
| * @suppress {checkTypes,extraRequire,missingOverride,missingReturn,unusedPrivateMembers,uselessCode} checked by tsc |
| */ |
| /** |
| * Autocomplete IDs need to be unique across components, so this counter exists outside of |
| * the component definition. |
| * @type {?} |
| */ |
| let _uniqueAutocompleteIdCounter = 0; |
| /** |
| * Event object that is emitted when an autocomplete option is selected. |
| */ |
| class MatAutocompleteSelectedEvent { |
| /** |
| * @param {?} source |
| * @param {?} option |
| */ |
| constructor(source, option) { |
| this.source = source; |
| this.option = option; |
| } |
| } |
| // Boilerplate for applying mixins to MatAutocomplete. |
| /** |
| * \@docs-private |
| */ |
| class MatAutocompleteBase { |
| } |
| /** @type {?} */ |
| const _MatAutocompleteMixinBase = mixinDisableRipple(MatAutocompleteBase); |
| /** |
| * Injection token to be used to override the default options for `mat-autocomplete`. |
| * @type {?} |
| */ |
| const MAT_AUTOCOMPLETE_DEFAULT_OPTIONS = new InjectionToken('mat-autocomplete-default-options', { |
| providedIn: 'root', |
| factory: MAT_AUTOCOMPLETE_DEFAULT_OPTIONS_FACTORY, |
| }); |
| /** |
| * \@docs-private |
| * @return {?} |
| */ |
| function MAT_AUTOCOMPLETE_DEFAULT_OPTIONS_FACTORY() { |
| return { autoActiveFirstOption: false }; |
| } |
| class MatAutocomplete extends _MatAutocompleteMixinBase { |
| /** |
| * @param {?} _changeDetectorRef |
| * @param {?} _elementRef |
| * @param {?} defaults |
| */ |
| constructor(_changeDetectorRef, _elementRef, defaults) { |
| super(); |
| this._changeDetectorRef = _changeDetectorRef; |
| this._elementRef = _elementRef; |
| /** |
| * Whether the autocomplete panel should be visible, depending on option length. |
| */ |
| this.showPanel = false; |
| this._isOpen = false; |
| /** |
| * Function that maps an option's control value to its display value in the trigger. |
| */ |
| this.displayWith = null; |
| /** |
| * Event that is emitted whenever an option from the list is selected. |
| */ |
| this.optionSelected = new EventEmitter(); |
| /** |
| * Event that is emitted when the autocomplete panel is opened. |
| */ |
| this.opened = new EventEmitter(); |
| /** |
| * Event that is emitted when the autocomplete panel is closed. |
| */ |
| this.closed = new EventEmitter(); |
| this._classList = {}; |
| /** |
| * Unique ID to be used by autocomplete trigger's "aria-owns" property. |
| */ |
| this.id = `mat-autocomplete-${_uniqueAutocompleteIdCounter++}`; |
| this._autoActiveFirstOption = !!defaults.autoActiveFirstOption; |
| } |
| /** |
| * Whether the autocomplete panel is open. |
| * @return {?} |
| */ |
| get isOpen() { return this._isOpen && this.showPanel; } |
| /** |
| * Whether the first option should be highlighted when the autocomplete panel is opened. |
| * Can be configured globally through the `MAT_AUTOCOMPLETE_DEFAULT_OPTIONS` token. |
| * @return {?} |
| */ |
| get autoActiveFirstOption() { return this._autoActiveFirstOption; } |
| /** |
| * @param {?} value |
| * @return {?} |
| */ |
| set autoActiveFirstOption(value) { |
| this._autoActiveFirstOption = coerceBooleanProperty(value); |
| } |
| /** |
| * Takes classes set on the host mat-autocomplete element and applies them to the panel |
| * inside the overlay container to allow for easy styling. |
| * @param {?} value |
| * @return {?} |
| */ |
| set classList(value) { |
| if (value && value.length) { |
| this._classList = value.split(' ').reduce((/** |
| * @param {?} classList |
| * @param {?} className |
| * @return {?} |
| */ |
| (classList, className) => { |
| classList[className.trim()] = true; |
| return classList; |
| }), (/** @type {?} */ ({}))); |
| } |
| else { |
| this._classList = {}; |
| } |
| this._setVisibilityClasses(this._classList); |
| this._elementRef.nativeElement.className = ''; |
| } |
| /** |
| * @return {?} |
| */ |
| ngAfterContentInit() { |
| this._keyManager = new ActiveDescendantKeyManager(this.options).withWrap(); |
| // Set the initial visibility state. |
| this._setVisibility(); |
| } |
| /** |
| * Sets the panel scrollTop. This allows us to manually scroll to display options |
| * above or below the fold, as they are not actually being focused when active. |
| * @param {?} scrollTop |
| * @return {?} |
| */ |
| _setScrollTop(scrollTop) { |
| if (this.panel) { |
| this.panel.nativeElement.scrollTop = scrollTop; |
| } |
| } |
| /** |
| * Returns the panel's scrollTop. |
| * @return {?} |
| */ |
| _getScrollTop() { |
| return this.panel ? this.panel.nativeElement.scrollTop : 0; |
| } |
| /** |
| * Panel should hide itself when the option list is empty. |
| * @return {?} |
| */ |
| _setVisibility() { |
| this.showPanel = !!this.options.length; |
| this._setVisibilityClasses(this._classList); |
| this._changeDetectorRef.markForCheck(); |
| } |
| /** |
| * Emits the `select` event. |
| * @param {?} option |
| * @return {?} |
| */ |
| _emitSelectEvent(option) { |
| /** @type {?} */ |
| const event = new MatAutocompleteSelectedEvent(this, option); |
| this.optionSelected.emit(event); |
| } |
| /** |
| * Sets the autocomplete visibility classes on a classlist based on the panel is visible. |
| * @private |
| * @param {?} classList |
| * @return {?} |
| */ |
| _setVisibilityClasses(classList) { |
| classList['mat-autocomplete-visible'] = this.showPanel; |
| classList['mat-autocomplete-hidden'] = !this.showPanel; |
| } |
| } |
| MatAutocomplete.decorators = [ |
| { type: Component, args: [{selector: 'mat-autocomplete', |
| template: "<ng-template><div class=\"mat-autocomplete-panel\" role=\"listbox\" [id]=\"id\" [ngClass]=\"_classList\" #panel><ng-content></ng-content></div></ng-template>", |
| styles: [".mat-autocomplete-panel{min-width:112px;max-width:280px;overflow:auto;-webkit-overflow-scrolling:touch;visibility:hidden;max-width:none;max-height:256px;position:relative;width:100%;border-bottom-left-radius:4px;border-bottom-right-radius:4px}.mat-autocomplete-panel.mat-autocomplete-visible{visibility:visible}.mat-autocomplete-panel.mat-autocomplete-hidden{visibility:hidden}.mat-autocomplete-panel-above .mat-autocomplete-panel{border-radius:0;border-top-left-radius:4px;border-top-right-radius:4px}.mat-autocomplete-panel .mat-divider-horizontal{margin-top:-1px}@media (-ms-high-contrast:active){.mat-autocomplete-panel{outline:solid 1px}}"], |
| encapsulation: ViewEncapsulation.None, |
| changeDetection: ChangeDetectionStrategy.OnPush, |
| exportAs: 'matAutocomplete', |
| inputs: ['disableRipple'], |
| host: { |
| 'class': 'mat-autocomplete' |
| }, |
| providers: [ |
| { provide: MAT_OPTION_PARENT_COMPONENT, useExisting: MatAutocomplete } |
| ] |
| },] }, |
| ]; |
| /** @nocollapse */ |
| MatAutocomplete.ctorParameters = () => [ |
| { type: ChangeDetectorRef }, |
| { type: ElementRef }, |
| { type: undefined, decorators: [{ type: Inject, args: [MAT_AUTOCOMPLETE_DEFAULT_OPTIONS,] }] } |
| ]; |
| MatAutocomplete.propDecorators = { |
| template: [{ type: ViewChild, args: [TemplateRef, { static: true },] }], |
| panel: [{ type: ViewChild, args: ['panel', { static: false },] }], |
| options: [{ type: ContentChildren, args: [MatOption, { descendants: true },] }], |
| optionGroups: [{ type: ContentChildren, args: [MatOptgroup,] }], |
| displayWith: [{ type: Input }], |
| autoActiveFirstOption: [{ type: Input }], |
| panelWidth: [{ type: Input }], |
| optionSelected: [{ type: Output }], |
| opened: [{ type: Output }], |
| closed: [{ type: Output }], |
| classList: [{ type: Input, args: ['class',] }] |
| }; |
| |
| /** |
| * @fileoverview added by tsickle |
| * @suppress {checkTypes,extraRequire,missingOverride,missingReturn,unusedPrivateMembers,uselessCode} checked by tsc |
| */ |
| /** |
| * Directive applied to an element to make it usable |
| * as a connection point for an autocomplete panel. |
| */ |
| class MatAutocompleteOrigin { |
| /** |
| * @param {?} elementRef |
| */ |
| constructor(elementRef) { |
| this.elementRef = elementRef; |
| } |
| } |
| MatAutocompleteOrigin.decorators = [ |
| { type: Directive, args: [{ |
| selector: '[matAutocompleteOrigin]', |
| exportAs: 'matAutocompleteOrigin', |
| },] }, |
| ]; |
| /** @nocollapse */ |
| MatAutocompleteOrigin.ctorParameters = () => [ |
| { type: ElementRef } |
| ]; |
| |
| /** |
| * @fileoverview added by tsickle |
| * @suppress {checkTypes,extraRequire,missingOverride,missingReturn,unusedPrivateMembers,uselessCode} checked by tsc |
| */ |
| /** |
| * The height of each autocomplete option. |
| * @type {?} |
| */ |
| const AUTOCOMPLETE_OPTION_HEIGHT = 48; |
| /** |
| * The total height of the autocomplete panel. |
| * @type {?} |
| */ |
| const AUTOCOMPLETE_PANEL_HEIGHT = 256; |
| /** |
| * Injection token that determines the scroll handling while the autocomplete panel is open. |
| * @type {?} |
| */ |
| const MAT_AUTOCOMPLETE_SCROLL_STRATEGY = new InjectionToken('mat-autocomplete-scroll-strategy'); |
| /** |
| * \@docs-private |
| * @param {?} overlay |
| * @return {?} |
| */ |
| function MAT_AUTOCOMPLETE_SCROLL_STRATEGY_FACTORY(overlay) { |
| return (/** |
| * @return {?} |
| */ |
| () => overlay.scrollStrategies.reposition()); |
| } |
| /** |
| * \@docs-private |
| * @type {?} |
| */ |
| const MAT_AUTOCOMPLETE_SCROLL_STRATEGY_FACTORY_PROVIDER = { |
| provide: MAT_AUTOCOMPLETE_SCROLL_STRATEGY, |
| deps: [Overlay], |
| useFactory: MAT_AUTOCOMPLETE_SCROLL_STRATEGY_FACTORY, |
| }; |
| /** |
| * Provider that allows the autocomplete to register as a ControlValueAccessor. |
| * \@docs-private |
| * @type {?} |
| */ |
| const MAT_AUTOCOMPLETE_VALUE_ACCESSOR = { |
| provide: NG_VALUE_ACCESSOR, |
| useExisting: forwardRef((/** |
| * @return {?} |
| */ |
| () => MatAutocompleteTrigger)), |
| multi: true |
| }; |
| /** |
| * Creates an error to be thrown when attempting to use an autocomplete trigger without a panel. |
| * \@docs-private |
| * @return {?} |
| */ |
| function getMatAutocompleteMissingPanelError() { |
| return Error('Attempting to open an undefined instance of `mat-autocomplete`. ' + |
| 'Make sure that the id passed to the `matAutocomplete` is correct and that ' + |
| 'you\'re attempting to open it after the ngAfterContentInit hook.'); |
| } |
| class MatAutocompleteTrigger { |
| /** |
| * @param {?} _element |
| * @param {?} _overlay |
| * @param {?} _viewContainerRef |
| * @param {?} _zone |
| * @param {?} _changeDetectorRef |
| * @param {?} scrollStrategy |
| * @param {?} _dir |
| * @param {?} _formField |
| * @param {?} _document |
| * @param {?=} _viewportRuler |
| */ |
| constructor(_element, _overlay, _viewContainerRef, _zone, _changeDetectorRef, scrollStrategy, _dir, _formField, _document, _viewportRuler) { |
| this._element = _element; |
| this._overlay = _overlay; |
| this._viewContainerRef = _viewContainerRef; |
| this._zone = _zone; |
| this._changeDetectorRef = _changeDetectorRef; |
| this._dir = _dir; |
| this._formField = _formField; |
| this._document = _document; |
| this._viewportRuler = _viewportRuler; |
| this._componentDestroyed = false; |
| this._autocompleteDisabled = false; |
| /** |
| * Whether or not the label state is being overridden. |
| */ |
| this._manuallyFloatingLabel = false; |
| /** |
| * Subscription to viewport size changes. |
| */ |
| this._viewportSubscription = Subscription.EMPTY; |
| /** |
| * Whether the autocomplete can open the next time it is focused. Used to prevent a focused, |
| * closed autocomplete from being reopened if the user switches to another browser tab and then |
| * comes back. |
| */ |
| this._canOpenOnNextFocus = true; |
| /** |
| * Stream of keyboard events that can close the panel. |
| */ |
| this._closeKeyEventStream = new Subject(); |
| /** |
| * Event handler for when the window is blurred. Needs to be an |
| * arrow function in order to preserve the context. |
| */ |
| this._windowBlurHandler = (/** |
| * @return {?} |
| */ |
| () => { |
| // If the user blurred the window while the autocomplete is focused, it means that it'll be |
| // refocused when they come back. In this case we want to skip the first focus event, if the |
| // pane was closed, in order to avoid reopening it unintentionally. |
| this._canOpenOnNextFocus = |
| this._document.activeElement !== this._element.nativeElement || this.panelOpen; |
| }); |
| /** |
| * `View -> model callback called when value changes` |
| */ |
| this._onChange = (/** |
| * @return {?} |
| */ |
| () => { }); |
| /** |
| * `View -> model callback called when autocomplete has been touched` |
| */ |
| this._onTouched = (/** |
| * @return {?} |
| */ |
| () => { }); |
| /** |
| * Position of the autocomplete panel relative to the trigger element. A position of `auto` |
| * will render the panel underneath the trigger if there is enough space for it to fit in |
| * the viewport, otherwise the panel will be shown above it. If the position is set to |
| * `above` or `below`, the panel will always be shown above or below the trigger. no matter |
| * whether it fits completely in the viewport. |
| */ |
| this.position = 'auto'; |
| /** |
| * `autocomplete` attribute to be set on the input element. |
| * \@docs-private |
| */ |
| this.autocompleteAttribute = 'off'; |
| this._overlayAttached = false; |
| /** |
| * Stream of autocomplete option selections. |
| */ |
| this.optionSelections = (/** @type {?} */ (defer((/** |
| * @return {?} |
| */ |
| () => { |
| if (this.autocomplete && this.autocomplete.options) { |
| return merge(...this.autocomplete.options.map((/** |
| * @param {?} option |
| * @return {?} |
| */ |
| option => option.onSelectionChange))); |
| } |
| // If there are any subscribers before `ngAfterViewInit`, the `autocomplete` will be undefined. |
| // Return a stream that we'll replace with the real one once everything is in place. |
| return this._zone.onStable |
| .asObservable() |
| .pipe(take(1), switchMap((/** |
| * @return {?} |
| */ |
| () => this.optionSelections))); |
| })))); |
| if (typeof window !== 'undefined') { |
| _zone.runOutsideAngular((/** |
| * @return {?} |
| */ |
| () => { |
| window.addEventListener('blur', this._windowBlurHandler); |
| })); |
| } |
| this._scrollStrategy = scrollStrategy; |
| } |
| /** |
| * Whether the autocomplete is disabled. When disabled, the element will |
| * act as a regular input and the user won't be able to open the panel. |
| * @return {?} |
| */ |
| get autocompleteDisabled() { return this._autocompleteDisabled; } |
| /** |
| * @param {?} value |
| * @return {?} |
| */ |
| set autocompleteDisabled(value) { |
| this._autocompleteDisabled = coerceBooleanProperty(value); |
| } |
| /** |
| * @param {?} changes |
| * @return {?} |
| */ |
| ngOnChanges(changes) { |
| if (changes['position'] && this._positionStrategy) { |
| this._setStrategyPositions(this._positionStrategy); |
| if (this.panelOpen) { |
| (/** @type {?} */ (this._overlayRef)).updatePosition(); |
| } |
| } |
| } |
| /** |
| * @return {?} |
| */ |
| ngOnDestroy() { |
| if (typeof window !== 'undefined') { |
| window.removeEventListener('blur', this._windowBlurHandler); |
| } |
| this._viewportSubscription.unsubscribe(); |
| this._componentDestroyed = true; |
| this._destroyPanel(); |
| this._closeKeyEventStream.complete(); |
| } |
| /** |
| * Whether or not the autocomplete panel is open. |
| * @return {?} |
| */ |
| get panelOpen() { |
| return this._overlayAttached && this.autocomplete.showPanel; |
| } |
| /** |
| * Opens the autocomplete suggestion panel. |
| * @return {?} |
| */ |
| openPanel() { |
| this._attachOverlay(); |
| this._floatLabel(); |
| } |
| /** |
| * Closes the autocomplete suggestion panel. |
| * @return {?} |
| */ |
| closePanel() { |
| this._resetLabel(); |
| if (!this._overlayAttached) { |
| return; |
| } |
| if (this.panelOpen) { |
| // Only emit if the panel was visible. |
| this.autocomplete.closed.emit(); |
| } |
| this.autocomplete._isOpen = this._overlayAttached = false; |
| if (this._overlayRef && this._overlayRef.hasAttached()) { |
| this._overlayRef.detach(); |
| this._closingActionsSubscription.unsubscribe(); |
| } |
| // Note that in some cases this can end up being called after the component is destroyed. |
| // Add a check to ensure that we don't try to run change detection on a destroyed view. |
| if (!this._componentDestroyed) { |
| // We need to trigger change detection manually, because |
| // `fromEvent` doesn't seem to do it at the proper time. |
| // This ensures that the label is reset when the |
| // user clicks outside. |
| this._changeDetectorRef.detectChanges(); |
| } |
| } |
| /** |
| * Updates the position of the autocomplete suggestion panel to ensure that it fits all options |
| * within the viewport. |
| * @return {?} |
| */ |
| updatePosition() { |
| if (this._overlayAttached) { |
| (/** @type {?} */ (this._overlayRef)).updatePosition(); |
| } |
| } |
| /** |
| * A stream of actions that should close the autocomplete panel, including |
| * when an option is selected, on blur, and when TAB is pressed. |
| * @return {?} |
| */ |
| get panelClosingActions() { |
| return merge(this.optionSelections, this.autocomplete._keyManager.tabOut.pipe(filter((/** |
| * @return {?} |
| */ |
| () => this._overlayAttached))), this._closeKeyEventStream, this._getOutsideClickStream(), this._overlayRef ? |
| this._overlayRef.detachments().pipe(filter((/** |
| * @return {?} |
| */ |
| () => this._overlayAttached))) : |
| of()).pipe( |
| // Normalize the output so we return a consistent type. |
| map((/** |
| * @param {?} event |
| * @return {?} |
| */ |
| event => event instanceof MatOptionSelectionChange ? event : null))); |
| } |
| /** |
| * The currently active option, coerced to MatOption type. |
| * @return {?} |
| */ |
| get activeOption() { |
| if (this.autocomplete && this.autocomplete._keyManager) { |
| return this.autocomplete._keyManager.activeItem; |
| } |
| return null; |
| } |
| /** |
| * Stream of clicks outside of the autocomplete panel. |
| * @private |
| * @return {?} |
| */ |
| _getOutsideClickStream() { |
| return merge((/** @type {?} */ (fromEvent(this._document, 'click'))), (/** @type {?} */ (fromEvent(this._document, 'touchend')))) |
| .pipe(filter((/** |
| * @param {?} event |
| * @return {?} |
| */ |
| event => { |
| /** @type {?} */ |
| const clickTarget = (/** @type {?} */ (event.target)); |
| /** @type {?} */ |
| const formField = this._formField ? |
| this._formField._elementRef.nativeElement : null; |
| return this._overlayAttached && |
| clickTarget !== this._element.nativeElement && |
| (!formField || !formField.contains(clickTarget)) && |
| (!!this._overlayRef && !this._overlayRef.overlayElement.contains(clickTarget)); |
| }))); |
| } |
| // Implemented as part of ControlValueAccessor. |
| /** |
| * @param {?} value |
| * @return {?} |
| */ |
| writeValue(value) { |
| Promise.resolve(null).then((/** |
| * @return {?} |
| */ |
| () => this._setTriggerValue(value))); |
| } |
| // Implemented as part of ControlValueAccessor. |
| /** |
| * @param {?} fn |
| * @return {?} |
| */ |
| registerOnChange(fn) { |
| this._onChange = fn; |
| } |
| // Implemented as part of ControlValueAccessor. |
| /** |
| * @param {?} fn |
| * @return {?} |
| */ |
| registerOnTouched(fn) { |
| this._onTouched = fn; |
| } |
| // Implemented as part of ControlValueAccessor. |
| /** |
| * @param {?} isDisabled |
| * @return {?} |
| */ |
| setDisabledState(isDisabled) { |
| this._element.nativeElement.disabled = isDisabled; |
| } |
| /** |
| * @param {?} event |
| * @return {?} |
| */ |
| _handleKeydown(event) { |
| /** @type {?} */ |
| const keyCode = event.keyCode; |
| // Prevent the default action on all escape key presses. This is here primarily to bring IE |
| // in line with other browsers. By default, pressing escape on IE will cause it to revert |
| // the input value to the one that it had on focus, however it won't dispatch any events |
| // which means that the model value will be out of sync with the view. |
| if (keyCode === ESCAPE) { |
| event.preventDefault(); |
| } |
| if (this.activeOption && keyCode === ENTER && this.panelOpen) { |
| this.activeOption._selectViaInteraction(); |
| this._resetActiveItem(); |
| event.preventDefault(); |
| } |
| else if (this.autocomplete) { |
| /** @type {?} */ |
| const prevActiveItem = this.autocomplete._keyManager.activeItem; |
| /** @type {?} */ |
| const isArrowKey = keyCode === UP_ARROW || keyCode === DOWN_ARROW; |
| if (this.panelOpen || keyCode === TAB) { |
| this.autocomplete._keyManager.onKeydown(event); |
| } |
| else if (isArrowKey && this._canOpen()) { |
| this.openPanel(); |
| } |
| if (isArrowKey || this.autocomplete._keyManager.activeItem !== prevActiveItem) { |
| this._scrollToOption(); |
| } |
| } |
| } |
| /** |
| * @param {?} event |
| * @return {?} |
| */ |
| _handleInput(event) { |
| /** @type {?} */ |
| let target = (/** @type {?} */ (event.target)); |
| /** @type {?} */ |
| let value = target.value; |
| // Based on `NumberValueAccessor` from forms. |
| if (target.type === 'number') { |
| value = value == '' ? null : parseFloat(value); |
| } |
| // If the input has a placeholder, IE will fire the `input` event on page load, |
| // focus and blur, in addition to when the user actually changed the value. To |
| // filter out all of the extra events, we save the value on focus and between |
| // `input` events, and we check whether it changed. |
| // See: https://connect.microsoft.com/IE/feedback/details/885747/ |
| if (this._previousValue !== value) { |
| this._previousValue = value; |
| this._onChange(value); |
| if (this._canOpen() && this._document.activeElement === event.target) { |
| this.openPanel(); |
| } |
| } |
| } |
| /** |
| * @return {?} |
| */ |
| _handleFocus() { |
| if (!this._canOpenOnNextFocus) { |
| this._canOpenOnNextFocus = true; |
| } |
| else if (this._canOpen()) { |
| this._previousValue = this._element.nativeElement.value; |
| this._attachOverlay(); |
| this._floatLabel(true); |
| } |
| } |
| /** |
| * In "auto" mode, the label will animate down as soon as focus is lost. |
| * This causes the value to jump when selecting an option with the mouse. |
| * This method manually floats the label until the panel can be closed. |
| * @private |
| * @param {?=} shouldAnimate Whether the label should be animated when it is floated. |
| * @return {?} |
| */ |
| _floatLabel(shouldAnimate = false) { |
| if (this._formField && this._formField.floatLabel === 'auto') { |
| if (shouldAnimate) { |
| this._formField._animateAndLockLabel(); |
| } |
| else { |
| this._formField.floatLabel = 'always'; |
| } |
| this._manuallyFloatingLabel = true; |
| } |
| } |
| /** |
| * If the label has been manually elevated, return it to its normal state. |
| * @private |
| * @return {?} |
| */ |
| _resetLabel() { |
| if (this._manuallyFloatingLabel) { |
| this._formField.floatLabel = 'auto'; |
| this._manuallyFloatingLabel = false; |
| } |
| } |
| /** |
| * Given that we are not actually focusing active options, we must manually adjust scroll |
| * to reveal options below the fold. First, we find the offset of the option from the top |
| * of the panel. If that offset is below the fold, the new scrollTop will be the offset - |
| * the panel height + the option height, so the active option will be just visible at the |
| * bottom of the panel. If that offset is above the top of the visible panel, the new scrollTop |
| * will become the offset. If that offset is visible within the panel already, the scrollTop is |
| * not adjusted. |
| * @private |
| * @return {?} |
| */ |
| _scrollToOption() { |
| /** @type {?} */ |
| const index = this.autocomplete._keyManager.activeItemIndex || 0; |
| /** @type {?} */ |
| const labelCount = _countGroupLabelsBeforeOption(index, this.autocomplete.options, this.autocomplete.optionGroups); |
| /** @type {?} */ |
| const newScrollPosition = _getOptionScrollPosition(index + labelCount, AUTOCOMPLETE_OPTION_HEIGHT, this.autocomplete._getScrollTop(), AUTOCOMPLETE_PANEL_HEIGHT); |
| this.autocomplete._setScrollTop(newScrollPosition); |
| } |
| /** |
| * This method listens to a stream of panel closing actions and resets the |
| * stream every time the option list changes. |
| * @private |
| * @return {?} |
| */ |
| _subscribeToClosingActions() { |
| /** @type {?} */ |
| const firstStable = this._zone.onStable.asObservable().pipe(take(1)); |
| /** @type {?} */ |
| const optionChanges = this.autocomplete.options.changes.pipe(tap((/** |
| * @return {?} |
| */ |
| () => this._positionStrategy.reapplyLastPosition())), |
| // Defer emitting to the stream until the next tick, because changing |
| // bindings in here will cause "changed after checked" errors. |
| delay(0)); |
| // When the zone is stable initially, and when the option list changes... |
| return merge(firstStable, optionChanges) |
| .pipe( |
| // create a new stream of panelClosingActions, replacing any previous streams |
| // that were created, and flatten it so our stream only emits closing events... |
| switchMap((/** |
| * @return {?} |
| */ |
| () => { |
| /** @type {?} */ |
| const wasOpen = this.panelOpen; |
| this._resetActiveItem(); |
| this.autocomplete._setVisibility(); |
| if (this.panelOpen) { |
| (/** @type {?} */ (this._overlayRef)).updatePosition(); |
| // If the `panelOpen` state changed, we need to make sure to emit the `opened` |
| // event, because we may not have emitted it when the panel was attached. This |
| // can happen if the users opens the panel and there are no options, but the |
| // options come in slightly later or as a result of the value changing. |
| if (wasOpen !== this.panelOpen) { |
| this.autocomplete.opened.emit(); |
| } |
| } |
| return this.panelClosingActions; |
| })), |
| // when the first closing event occurs... |
| take(1)) |
| // set the value, close the panel, and complete. |
| .subscribe((/** |
| * @param {?} event |
| * @return {?} |
| */ |
| event => this._setValueAndClose(event))); |
| } |
| /** |
| * Destroys the autocomplete suggestion panel. |
| * @private |
| * @return {?} |
| */ |
| _destroyPanel() { |
| if (this._overlayRef) { |
| this.closePanel(); |
| this._overlayRef.dispose(); |
| this._overlayRef = null; |
| } |
| } |
| /** |
| * @private |
| * @param {?} value |
| * @return {?} |
| */ |
| _setTriggerValue(value) { |
| /** @type {?} */ |
| const toDisplay = this.autocomplete && this.autocomplete.displayWith ? |
| this.autocomplete.displayWith(value) : |
| value; |
| // Simply falling back to an empty string if the display value is falsy does not work properly. |
| // The display value can also be the number zero and shouldn't fall back to an empty string. |
| /** @type {?} */ |
| const inputValue = toDisplay != null ? toDisplay : ''; |
| // If it's used within a `MatFormField`, we should set it through the property so it can go |
| // through change detection. |
| if (this._formField) { |
| this._formField._control.value = inputValue; |
| } |
| else { |
| this._element.nativeElement.value = inputValue; |
| } |
| this._previousValue = inputValue; |
| } |
| /** |
| * This method closes the panel, and if a value is specified, also sets the associated |
| * control to that value. It will also mark the control as dirty if this interaction |
| * stemmed from the user. |
| * @private |
| * @param {?} event |
| * @return {?} |
| */ |
| _setValueAndClose(event) { |
| if (event && event.source) { |
| this._clearPreviousSelectedOption(event.source); |
| this._setTriggerValue(event.source.value); |
| this._onChange(event.source.value); |
| this._element.nativeElement.focus(); |
| this.autocomplete._emitSelectEvent(event.source); |
| } |
| this.closePanel(); |
| } |
| /** |
| * Clear any previous selected option and emit a selection change event for this option |
| * @private |
| * @param {?} skip |
| * @return {?} |
| */ |
| _clearPreviousSelectedOption(skip) { |
| this.autocomplete.options.forEach((/** |
| * @param {?} option |
| * @return {?} |
| */ |
| option => { |
| if (option != skip && option.selected) { |
| option.deselect(); |
| } |
| })); |
| } |
| /** |
| * @private |
| * @return {?} |
| */ |
| _attachOverlay() { |
| if (!this.autocomplete) { |
| throw getMatAutocompleteMissingPanelError(); |
| } |
| /** @type {?} */ |
| let overlayRef = this._overlayRef; |
| if (!overlayRef) { |
| this._portal = new TemplatePortal(this.autocomplete.template, this._viewContainerRef); |
| overlayRef = this._overlay.create(this._getOverlayConfig()); |
| this._overlayRef = overlayRef; |
| // Use the `keydownEvents` in order to take advantage of |
| // the overlay event targeting provided by the CDK overlay. |
| overlayRef.keydownEvents().subscribe((/** |
| * @param {?} event |
| * @return {?} |
| */ |
| event => { |
| // Close when pressing ESCAPE or ALT + UP_ARROW, based on the a11y guidelines. |
| // See: https://www.w3.org/TR/wai-aria-practices-1.1/#textbox-keyboard-interaction |
| if (event.keyCode === ESCAPE || (event.keyCode === UP_ARROW && event.altKey)) { |
| this._resetActiveItem(); |
| this._closeKeyEventStream.next(); |
| // We need to stop propagation, otherwise the event will eventually |
| // reach the input itself and cause the overlay to be reopened. |
| event.stopPropagation(); |
| event.preventDefault(); |
| } |
| })); |
| if (this._viewportRuler) { |
| this._viewportSubscription = this._viewportRuler.change().subscribe((/** |
| * @return {?} |
| */ |
| () => { |
| if (this.panelOpen && overlayRef) { |
| overlayRef.updateSize({ width: this._getPanelWidth() }); |
| } |
| })); |
| } |
| } |
| else { |
| // Update the trigger, panel width and direction, in case anything has changed. |
| this._positionStrategy.setOrigin(this._getConnectedElement()); |
| overlayRef.updateSize({ width: this._getPanelWidth() }); |
| } |
| if (overlayRef && !overlayRef.hasAttached()) { |
| overlayRef.attach(this._portal); |
| this._closingActionsSubscription = this._subscribeToClosingActions(); |
| } |
| /** @type {?} */ |
| const wasOpen = this.panelOpen; |
| this.autocomplete._setVisibility(); |
| this.autocomplete._isOpen = this._overlayAttached = true; |
| // We need to do an extra `panelOpen` check in here, because the |
| // autocomplete won't be shown if there are no options. |
| if (this.panelOpen && wasOpen !== this.panelOpen) { |
| this.autocomplete.opened.emit(); |
| } |
| } |
| /** |
| * @private |
| * @return {?} |
| */ |
| _getOverlayConfig() { |
| return new OverlayConfig({ |
| positionStrategy: this._getOverlayPosition(), |
| scrollStrategy: this._scrollStrategy(), |
| width: this._getPanelWidth(), |
| direction: this._dir |
| }); |
| } |
| /** |
| * @private |
| * @return {?} |
| */ |
| _getOverlayPosition() { |
| /** @type {?} */ |
| const strategy = this._overlay.position() |
| .flexibleConnectedTo(this._getConnectedElement()) |
| .withFlexibleDimensions(false) |
| .withPush(false); |
| this._setStrategyPositions(strategy); |
| this._positionStrategy = strategy; |
| return strategy; |
| } |
| /** |
| * Sets the positions on a position strategy based on the directive's input state. |
| * @private |
| * @param {?} positionStrategy |
| * @return {?} |
| */ |
| _setStrategyPositions(positionStrategy) { |
| /** @type {?} */ |
| const belowPosition = { |
| originX: 'start', |
| originY: 'bottom', |
| overlayX: 'start', |
| overlayY: 'top' |
| }; |
| /** @type {?} */ |
| const abovePosition = { |
| originX: 'start', |
| originY: 'top', |
| overlayX: 'start', |
| overlayY: 'bottom', |
| // The overlay edge connected to the trigger should have squared corners, while |
| // the opposite end has rounded corners. We apply a CSS class to swap the |
| // border-radius based on the overlay position. |
| panelClass: 'mat-autocomplete-panel-above' |
| }; |
| /** @type {?} */ |
| let positions; |
| if (this.position === 'above') { |
| positions = [abovePosition]; |
| } |
| else if (this.position === 'below') { |
| positions = [belowPosition]; |
| } |
| else { |
| positions = [belowPosition, abovePosition]; |
| } |
| positionStrategy.withPositions(positions); |
| } |
| /** |
| * @private |
| * @return {?} |
| */ |
| _getConnectedElement() { |
| if (this.connectedTo) { |
| return this.connectedTo.elementRef; |
| } |
| return this._formField ? this._formField.getConnectedOverlayOrigin() : this._element; |
| } |
| /** |
| * @private |
| * @return {?} |
| */ |
| _getPanelWidth() { |
| return this.autocomplete.panelWidth || this._getHostWidth(); |
| } |
| /** |
| * Returns the width of the input element, so the panel width can match it. |
| * @private |
| * @return {?} |
| */ |
| _getHostWidth() { |
| return this._getConnectedElement().nativeElement.getBoundingClientRect().width; |
| } |
| /** |
| * Resets the active item to -1 so arrow events will activate the |
| * correct options, or to 0 if the consumer opted into it. |
| * @private |
| * @return {?} |
| */ |
| _resetActiveItem() { |
| this.autocomplete._keyManager.setActiveItem(this.autocomplete.autoActiveFirstOption ? 0 : -1); |
| } |
| /** |
| * Determines whether the panel can be opened. |
| * @private |
| * @return {?} |
| */ |
| _canOpen() { |
| /** @type {?} */ |
| const element = this._element.nativeElement; |
| return !element.readOnly && !element.disabled && !this._autocompleteDisabled; |
| } |
| } |
| MatAutocompleteTrigger.decorators = [ |
| { type: Directive, args: [{ |
| selector: `input[matAutocomplete], textarea[matAutocomplete]`, |
| host: { |
| '[attr.autocomplete]': 'autocompleteAttribute', |
| '[attr.role]': 'autocompleteDisabled ? null : "combobox"', |
| '[attr.aria-autocomplete]': 'autocompleteDisabled ? null : "list"', |
| '[attr.aria-activedescendant]': '(panelOpen && activeOption) ? activeOption.id : null', |
| '[attr.aria-expanded]': 'autocompleteDisabled ? null : panelOpen.toString()', |
| '[attr.aria-owns]': '(autocompleteDisabled || !panelOpen) ? null : autocomplete?.id', |
| '[attr.aria-haspopup]': '!autocompleteDisabled', |
| // Note: we use `focusin`, as opposed to `focus`, in order to open the panel |
| // a little earlier. This avoids issues where IE delays the focusing of the input. |
| '(focusin)': '_handleFocus()', |
| '(blur)': '_onTouched()', |
| '(input)': '_handleInput($event)', |
| '(keydown)': '_handleKeydown($event)', |
| }, |
| exportAs: 'matAutocompleteTrigger', |
| providers: [MAT_AUTOCOMPLETE_VALUE_ACCESSOR] |
| },] }, |
| ]; |
| /** @nocollapse */ |
| MatAutocompleteTrigger.ctorParameters = () => [ |
| { type: ElementRef }, |
| { type: Overlay }, |
| { type: ViewContainerRef }, |
| { type: NgZone }, |
| { type: ChangeDetectorRef }, |
| { type: undefined, decorators: [{ type: Inject, args: [MAT_AUTOCOMPLETE_SCROLL_STRATEGY,] }] }, |
| { type: Directionality, decorators: [{ type: Optional }] }, |
| { type: MatFormField, decorators: [{ type: Optional }, { type: Host }] }, |
| { type: undefined, decorators: [{ type: Optional }, { type: Inject, args: [DOCUMENT,] }] }, |
| { type: ViewportRuler } |
| ]; |
| MatAutocompleteTrigger.propDecorators = { |
| autocomplete: [{ type: Input, args: ['matAutocomplete',] }], |
| position: [{ type: Input, args: ['matAutocompletePosition',] }], |
| connectedTo: [{ type: Input, args: ['matAutocompleteConnectedTo',] }], |
| autocompleteAttribute: [{ type: Input, args: ['autocomplete',] }], |
| autocompleteDisabled: [{ type: Input, args: ['matAutocompleteDisabled',] }] |
| }; |
| |
| /** |
| * @fileoverview added by tsickle |
| * @suppress {checkTypes,extraRequire,missingOverride,missingReturn,unusedPrivateMembers,uselessCode} checked by tsc |
| */ |
| class MatAutocompleteModule { |
| } |
| MatAutocompleteModule.decorators = [ |
| { type: NgModule, args: [{ |
| imports: [MatOptionModule, OverlayModule, MatCommonModule, CommonModule], |
| exports: [ |
| MatAutocomplete, |
| MatOptionModule, |
| MatAutocompleteTrigger, |
| MatAutocompleteOrigin, |
| MatCommonModule |
| ], |
| declarations: [MatAutocomplete, MatAutocompleteTrigger, MatAutocompleteOrigin], |
| providers: [MAT_AUTOCOMPLETE_SCROLL_STRATEGY_FACTORY_PROVIDER], |
| },] }, |
| ]; |
| |
| /** |
| * @fileoverview added by tsickle |
| * @suppress {checkTypes,extraRequire,missingOverride,missingReturn,unusedPrivateMembers,uselessCode} checked by tsc |
| */ |
| |
| /** |
| * @fileoverview added by tsickle |
| * @suppress {checkTypes,extraRequire,missingOverride,missingReturn,unusedPrivateMembers,uselessCode} checked by tsc |
| */ |
| |
| export { MAT_AUTOCOMPLETE_DEFAULT_OPTIONS_FACTORY, MatAutocompleteSelectedEvent, MAT_AUTOCOMPLETE_DEFAULT_OPTIONS, MatAutocomplete, MatAutocompleteModule, MAT_AUTOCOMPLETE_SCROLL_STRATEGY_FACTORY, getMatAutocompleteMissingPanelError, AUTOCOMPLETE_OPTION_HEIGHT, AUTOCOMPLETE_PANEL_HEIGHT, MAT_AUTOCOMPLETE_SCROLL_STRATEGY, MAT_AUTOCOMPLETE_SCROLL_STRATEGY_FACTORY_PROVIDER, MAT_AUTOCOMPLETE_VALUE_ACCESSOR, MatAutocompleteTrigger, MatAutocompleteOrigin }; |
| //# sourceMappingURL=autocomplete.js.map |
