import { ActiveDescendantKeyManager } from '@angular/cdk/a11y'; import { coerceBooleanProperty, coerceStringArray } from '@angular/cdk/coercion'; import { Platform, _getEventTarget } from '@angular/cdk/platform'; import { InjectionToken, EventEmitter, Directive, ChangeDetectorRef, ElementRef, Inject, ViewChild, TemplateRef, Input, Output, Component, ViewEncapsulation, ChangeDetectionStrategy, ContentChildren, forwardRef, ViewContainerRef, NgZone, Optional, Host, NgModule } from '@angular/core'; import { mixinDisableRipple, MAT_OPTION_PARENT_COMPONENT, MAT_OPTGROUP, MatOption, MatOptionSelectionChange, _countGroupLabelsBeforeOption, _getOptionScrollPosition, MatOptionModule, MatCommonModule } from '@angular/material/core'; import { Subscription, Subject, defer, merge, of, fromEvent } from 'rxjs'; import { DOCUMENT, CommonModule } from '@angular/common'; import { Overlay, OverlayConfig, OverlayModule } from '@angular/cdk/overlay'; import { ViewportRuler, CdkScrollableModule } from '@angular/cdk/scrolling'; import { Directionality } from '@angular/cdk/bidi'; import { ESCAPE, hasModifierKey, ENTER, UP_ARROW, DOWN_ARROW, TAB } from '@angular/cdk/keycodes'; import { TemplatePortal } from '@angular/cdk/portal'; import { NG_VALUE_ACCESSOR } from '@angular/forms'; import { MatFormField, MAT_FORM_FIELD } from '@angular/material/form-field'; import { take, switchMap, filter, map, tap, delay } from 'rxjs/operators'; /** * @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 */ /** * Autocomplete IDs need to be unique across components, so this counter exists outside of * the component definition. */ let _uniqueAutocompleteIdCounter = 0; /** Event object that is emitted when an autocomplete option is selected. */ class MatAutocompleteSelectedEvent { constructor( /** Reference to the autocomplete panel that emitted the event. */ source, /** Option that was selected. */ option) { this.source = source; this.option = option; } } // Boilerplate for applying mixins to MatAutocomplete. /** @docs-private */ const _MatAutocompleteMixinBase = mixinDisableRipple(class { }); /** Injection token to be used to override the default options for `mat-autocomplete`. */ const MAT_AUTOCOMPLETE_DEFAULT_OPTIONS = new InjectionToken('mat-autocomplete-default-options', { providedIn: 'root', factory: MAT_AUTOCOMPLETE_DEFAULT_OPTIONS_FACTORY, }); /** @docs-private */ function MAT_AUTOCOMPLETE_DEFAULT_OPTIONS_FACTORY() { return { autoActiveFirstOption: false }; } /** Base class with all of the `MatAutocomplete` functionality. */ class _MatAutocompleteBase extends _MatAutocompleteMixinBase { constructor(_changeDetectorRef, _elementRef, defaults, platform) { super(); this._changeDetectorRef = _changeDetectorRef; this._elementRef = _elementRef; this._activeOptionChanges = Subscription.EMPTY; /** 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(); /** Emits whenever an option is activated using the keyboard. */ this.optionActivated = new EventEmitter(); this._classList = {}; /** Unique ID to be used by autocomplete trigger's "aria-owns" property. */ this.id = `mat-autocomplete-${_uniqueAutocompleteIdCounter++}`; // TODO(crisbeto): the problem that the `inertGroups` option resolves is only present on // Safari using VoiceOver. We should occasionally check back to see whether the bug // wasn't resolved in VoiceOver, and if it has, we can remove this and the `inertGroups` // option altogether. this.inertGroups = (platform === null || platform === void 0 ? void 0 : platform.SAFARI) || false; this._autoActiveFirstOption = !!defaults.autoActiveFirstOption; } /** Whether the autocomplete panel is open. */ 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. */ get autoActiveFirstOption() { return this._autoActiveFirstOption; } 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. */ set classList(value) { if (value && value.length) { this._classList = coerceStringArray(value).reduce((classList, className) => { classList[className] = true; return classList; }, {}); } else { this._classList = {}; } this._setVisibilityClasses(this._classList); this._elementRef.nativeElement.className = ''; } ngAfterContentInit() { this._keyManager = new ActiveDescendantKeyManager(this.options).withWrap(); this._activeOptionChanges = this._keyManager.change.subscribe(index => { if (this.isOpen) { this.optionActivated.emit({ source: this, option: this.options.toArray()[index] || null }); } }); // Set the initial visibility state. this._setVisibility(); } ngOnDestroy() { this._activeOptionChanges.unsubscribe(); } /** * 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. */ _setScrollTop(scrollTop) { if (this.panel) { this.panel.nativeElement.scrollTop = scrollTop; } } /** Returns the panel's scrollTop. */ _getScrollTop() { return this.panel ? this.panel.nativeElement.scrollTop : 0; } /** Panel should hide itself when the option list is empty. */ _setVisibility() { this.showPanel = !!this.options.length; this._setVisibilityClasses(this._classList); this._changeDetectorRef.markForCheck(); } /** Emits the `select` event. */ _emitSelectEvent(option) { const event = new MatAutocompleteSelectedEvent(this, option); this.optionSelected.emit(event); } /** Gets the aria-labelledby for the autocomplete panel. */ _getPanelAriaLabelledby(labelId) { if (this.ariaLabel) { return null; } const labelExpression = labelId ? labelId + ' ' : ''; return this.ariaLabelledby ? labelExpression + this.ariaLabelledby : labelId; } /** Sets the autocomplete visibility classes on a classlist based on the panel is visible. */ _setVisibilityClasses(classList) { classList[this._visibleClass] = this.showPanel; classList[this._hiddenClass] = !this.showPanel; } } _MatAutocompleteBase.decorators = [ { type: Directive } ]; _MatAutocompleteBase.ctorParameters = () => [ { type: ChangeDetectorRef }, { type: ElementRef }, { type: undefined, decorators: [{ type: Inject, args: [MAT_AUTOCOMPLETE_DEFAULT_OPTIONS,] }] }, { type: Platform } ]; _MatAutocompleteBase.propDecorators = { template: [{ type: ViewChild, args: [TemplateRef, { static: true },] }], panel: [{ type: ViewChild, args: ['panel',] }], ariaLabel: [{ type: Input, args: ['aria-label',] }], ariaLabelledby: [{ type: Input, args: ['aria-labelledby',] }], displayWith: [{ type: Input }], autoActiveFirstOption: [{ type: Input }], panelWidth: [{ type: Input }], optionSelected: [{ type: Output }], opened: [{ type: Output }], closed: [{ type: Output }], optionActivated: [{ type: Output }], classList: [{ type: Input, args: ['class',] }] }; class MatAutocomplete extends _MatAutocompleteBase { constructor() { super(...arguments); this._visibleClass = 'mat-autocomplete-visible'; this._hiddenClass = 'mat-autocomplete-hidden'; } } MatAutocomplete.decorators = [ { type: Component, args: [{ selector: 'mat-autocomplete', template: "\n
\n \n
\n\n", encapsulation: ViewEncapsulation.None, changeDetection: ChangeDetectionStrategy.OnPush, exportAs: 'matAutocomplete', inputs: ['disableRipple'], host: { 'class': 'mat-autocomplete' }, providers: [ { provide: MAT_OPTION_PARENT_COMPONENT, useExisting: MatAutocomplete } ], 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}.cdk-high-contrast-active .mat-autocomplete-panel{outline:solid 1px}mat-autocomplete{display:none}\n"] },] } ]; MatAutocomplete.propDecorators = { optionGroups: [{ type: ContentChildren, args: [MAT_OPTGROUP, { descendants: true },] }], options: [{ type: ContentChildren, args: [MatOption, { descendants: true },] }] }; /** * @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 */ /** Base class containing all of the functionality for `MatAutocompleteOrigin`. */ class _MatAutocompleteOriginBase { constructor( /** Reference to the element on which the directive is applied. */ elementRef) { this.elementRef = elementRef; } } _MatAutocompleteOriginBase.decorators = [ { type: Directive } ]; _MatAutocompleteOriginBase.ctorParameters = () => [ { type: ElementRef } ]; /** * Directive applied to an element to make it usable * as a connection point for an autocomplete panel. */ class MatAutocompleteOrigin extends _MatAutocompleteOriginBase { } MatAutocompleteOrigin.decorators = [ { type: Directive, args: [{ selector: '[matAutocompleteOrigin]', exportAs: 'matAutocompleteOrigin', },] } ]; /** * @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 */ /** Injection token that determines the scroll handling while the autocomplete panel is open. */ const MAT_AUTOCOMPLETE_SCROLL_STRATEGY = new InjectionToken('mat-autocomplete-scroll-strategy'); /** @docs-private */ function MAT_AUTOCOMPLETE_SCROLL_STRATEGY_FACTORY(overlay) { return () => overlay.scrollStrategies.reposition(); } /** @docs-private */ 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 */ const MAT_AUTOCOMPLETE_VALUE_ACCESSOR = { provide: NG_VALUE_ACCESSOR, useExisting: forwardRef(() => MatAutocompleteTrigger), multi: true }; /** * Creates an error to be thrown when attempting to use an autocomplete trigger without a panel. * @docs-private */ 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.'); } /** Base class with all of the `MatAutocompleteTrigger` functionality. */ class _MatAutocompleteTriggerBase { constructor(_element, _overlay, _viewContainerRef, _zone, _changeDetectorRef, scrollStrategy, _dir, _formField, _document, _viewportRuler, _defaults) { 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._defaults = _defaults; 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 = () => { // 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 = () => { }; /** `View -> model callback called when autocomplete has been touched` */ this._onTouched = () => { }; /** * 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 = defer(() => { if (this.autocomplete && this.autocomplete.options) { return merge(...this.autocomplete.options.map(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 .pipe(take(1), switchMap(() => this.optionSelections)); }); 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. */ get autocompleteDisabled() { return this._autocompleteDisabled; } set autocompleteDisabled(value) { this._autocompleteDisabled = coerceBooleanProperty(value); } ngAfterViewInit() { const window = this._getWindow(); if (typeof window !== 'undefined') { this._zone.runOutsideAngular(() => window.addEventListener('blur', this._windowBlurHandler)); } } ngOnChanges(changes) { if (changes['position'] && this._positionStrategy) { this._setStrategyPositions(this._positionStrategy); if (this.panelOpen) { this._overlayRef.updatePosition(); } } } ngOnDestroy() { const window = this._getWindow(); 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. */ get panelOpen() { return this._overlayAttached && this.autocomplete.showPanel; } /** Opens the autocomplete suggestion panel. */ openPanel() { this._attachOverlay(); this._floatLabel(); } /** Closes the autocomplete suggestion panel. */ 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. */ updatePosition() { if (this._overlayAttached) { 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. */ get panelClosingActions() { return merge(this.optionSelections, this.autocomplete._keyManager.tabOut.pipe(filter(() => this._overlayAttached)), this._closeKeyEventStream, this._getOutsideClickStream(), this._overlayRef ? this._overlayRef.detachments().pipe(filter(() => this._overlayAttached)) : of()).pipe( // Normalize the output so we return a consistent type. map(event => event instanceof MatOptionSelectionChange ? event : null)); } /** The currently active option, coerced to MatOption type. */ get activeOption() { if (this.autocomplete && this.autocomplete._keyManager) { return this.autocomplete._keyManager.activeItem; } return null; } /** Stream of clicks outside of the autocomplete panel. */ _getOutsideClickStream() { return merge(fromEvent(this._document, 'click'), fromEvent(this._document, 'auxclick'), fromEvent(this._document, 'touchend')) .pipe(filter(event => { // If we're in the Shadow DOM, the event target will be the shadow root, so we have to // fall back to check the first element in the path of the click event. const clickTarget = _getEventTarget(event); const formField = this._formField ? this._formField._elementRef.nativeElement : null; const customOrigin = this.connectedTo ? this.connectedTo.elementRef.nativeElement : null; return this._overlayAttached && clickTarget !== this._element.nativeElement && (!formField || !formField.contains(clickTarget)) && (!customOrigin || !customOrigin.contains(clickTarget)) && (!!this._overlayRef && !this._overlayRef.overlayElement.contains(clickTarget)); })); } // Implemented as part of ControlValueAccessor. writeValue(value) { Promise.resolve(null).then(() => this._setTriggerValue(value)); } // Implemented as part of ControlValueAccessor. registerOnChange(fn) { this._onChange = fn; } // Implemented as part of ControlValueAccessor. registerOnTouched(fn) { this._onTouched = fn; } // Implemented as part of ControlValueAccessor. setDisabledState(isDisabled) { this._element.nativeElement.disabled = isDisabled; } _handleKeydown(event) { 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 && !hasModifierKey(event)) { event.preventDefault(); } if (this.activeOption && keyCode === ENTER && this.panelOpen) { this.activeOption._selectViaInteraction(); this._resetActiveItem(); event.preventDefault(); } else if (this.autocomplete) { const prevActiveItem = this.autocomplete._keyManager.activeItem; 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(this.autocomplete._keyManager.activeItemIndex || 0); } } } _handleInput(event) { let target = event.target; 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(); } } } _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. * @param shouldAnimate Whether the label should be animated when it is floated. */ _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. */ _resetLabel() { if (this._manuallyFloatingLabel) { this._formField.floatLabel = 'auto'; this._manuallyFloatingLabel = false; } } /** * This method listens to a stream of panel closing actions and resets the * stream every time the option list changes. */ _subscribeToClosingActions() { const firstStable = this._zone.onStable.pipe(take(1)); const optionChanges = this.autocomplete.options.changes.pipe(tap(() => 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(() => { const wasOpen = this.panelOpen; this._resetActiveItem(); this.autocomplete._setVisibility(); if (this.panelOpen) { 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(event => this._setValueAndClose(event)); } /** Destroys the autocomplete suggestion panel. */ _destroyPanel() { if (this._overlayRef) { this.closePanel(); this._overlayRef.dispose(); this._overlayRef = null; } } _setTriggerValue(value) { 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. 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. */ _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 */ _clearPreviousSelectedOption(skip) { this.autocomplete.options.forEach(option => { if (option !== skip && option.selected) { option.deselect(); } }); } _attachOverlay() { var _a; if (!this.autocomplete && (typeof ngDevMode === 'undefined' || ngDevMode)) { throw getMatAutocompleteMissingPanelError(); } let overlayRef = this._overlayRef; if (!overlayRef) { this._portal = new TemplatePortal(this.autocomplete.template, this._viewContainerRef, { id: (_a = this._formField) === null || _a === void 0 ? void 0 : _a.getLabelId() }); 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(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 && !hasModifierKey(event)) || (event.keyCode === UP_ARROW && hasModifierKey(event, 'altKey'))) { this._closeKeyEventStream.next(); this._resetActiveItem(); // 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(); } }); this._viewportSubscription = this._viewportRuler.change().subscribe(() => { 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(); } 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(); } } _getOverlayConfig() { var _a; return new OverlayConfig({ positionStrategy: this._getOverlayPosition(), scrollStrategy: this._scrollStrategy(), width: this._getPanelWidth(), direction: this._dir, panelClass: (_a = this._defaults) === null || _a === void 0 ? void 0 : _a.overlayPanelClass, }); } _getOverlayPosition() { 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. */ _setStrategyPositions(positionStrategy) { // Note that we provide horizontal fallback positions, even though by default the dropdown // width matches the input, because consumers can override the width. See #18854. const belowPositions = [ { originX: 'start', originY: 'bottom', overlayX: 'start', overlayY: 'top' }, { originX: 'end', originY: 'bottom', overlayX: 'end', overlayY: 'top' } ]; // 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. const panelClass = this._aboveClass; const abovePositions = [ { originX: 'start', originY: 'top', overlayX: 'start', overlayY: 'bottom', panelClass }, { originX: 'end', originY: 'top', overlayX: 'end', overlayY: 'bottom', panelClass } ]; let positions; if (this.position === 'above') { positions = abovePositions; } else if (this.position === 'below') { positions = belowPositions; } else { positions = [...belowPositions, ...abovePositions]; } positionStrategy.withPositions(positions); } _getConnectedElement() { if (this.connectedTo) { return this.connectedTo.elementRef; } return this._formField ? this._formField.getConnectedOverlayOrigin() : this._element; } _getPanelWidth() { return this.autocomplete.panelWidth || this._getHostWidth(); } /** Returns the width of the input element, so the panel width can match it. */ _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. */ _resetActiveItem() { const autocomplete = this.autocomplete; if (autocomplete.autoActiveFirstOption) { // Note that we go through `setFirstItemActive`, rather than `setActiveItem(0)`, because // the former will find the next enabled option, if the first one is disabled. autocomplete._keyManager.setFirstItemActive(); } else { autocomplete._keyManager.setActiveItem(-1); } } /** Determines whether the panel can be opened. */ _canOpen() { const element = this._element.nativeElement; return !element.readOnly && !element.disabled && !this._autocompleteDisabled; } /** Use defaultView of injected document if available or fallback to global window reference */ _getWindow() { var _a; return ((_a = this._document) === null || _a === void 0 ? void 0 : _a.defaultView) || window; } /** Scrolls to a particular option in the list. */ _scrollToOption(index) { // 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. const autocomplete = this.autocomplete; const labelCount = _countGroupLabelsBeforeOption(index, autocomplete.options, autocomplete.optionGroups); if (index === 0 && labelCount === 1) { // If we've got one group label before the option and we're at the top option, // scroll the list to the top. This is better UX than scrolling the list to the // top of the option, because it allows the user to read the top group's label. autocomplete._setScrollTop(0); } else if (autocomplete.panel) { const option = autocomplete.options.toArray()[index]; if (option) { const element = option._getHostElement(); const newScrollPosition = _getOptionScrollPosition(element.offsetTop, element.offsetHeight, autocomplete._getScrollTop(), autocomplete.panel.nativeElement.offsetHeight); autocomplete._setScrollTop(newScrollPosition); } } } } _MatAutocompleteTriggerBase.decorators = [ { type: Directive } ]; _MatAutocompleteTriggerBase.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: Inject, args: [MAT_FORM_FIELD,] }, { type: Host }] }, { type: undefined, decorators: [{ type: Optional }, { type: Inject, args: [DOCUMENT,] }] }, { type: ViewportRuler }, { type: undefined, decorators: [{ type: Optional }, { type: Inject, args: [MAT_AUTOCOMPLETE_DEFAULT_OPTIONS,] }] } ]; _MatAutocompleteTriggerBase.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',] }] }; class MatAutocompleteTrigger extends _MatAutocompleteTriggerBase { constructor() { super(...arguments); this._aboveClass = 'mat-autocomplete-panel-above'; } } MatAutocompleteTrigger.decorators = [ { type: Directive, args: [{ selector: `input[matAutocomplete], textarea[matAutocomplete]`, host: { 'class': 'mat-autocomplete-trigger', '[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] },] } ]; /** * @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 */ class MatAutocompleteModule { } MatAutocompleteModule.decorators = [ { type: NgModule, args: [{ imports: [ OverlayModule, MatOptionModule, MatCommonModule, CommonModule ], exports: [ MatAutocomplete, MatAutocompleteTrigger, MatAutocompleteOrigin, CdkScrollableModule, MatOptionModule, MatCommonModule, ], declarations: [MatAutocomplete, MatAutocompleteTrigger, MatAutocompleteOrigin], providers: [MAT_AUTOCOMPLETE_SCROLL_STRATEGY_FACTORY_PROVIDER], },] } ]; /** * @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 */ /** * Generated bundle index. Do not edit. */ export { MAT_AUTOCOMPLETE_DEFAULT_OPTIONS, MAT_AUTOCOMPLETE_DEFAULT_OPTIONS_FACTORY, MAT_AUTOCOMPLETE_SCROLL_STRATEGY, MAT_AUTOCOMPLETE_SCROLL_STRATEGY_FACTORY, MAT_AUTOCOMPLETE_SCROLL_STRATEGY_FACTORY_PROVIDER, MAT_AUTOCOMPLETE_VALUE_ACCESSOR, MatAutocomplete, MatAutocompleteModule, MatAutocompleteOrigin, MatAutocompleteSelectedEvent, MatAutocompleteTrigger, _MatAutocompleteBase, _MatAutocompleteOriginBase, _MatAutocompleteTriggerBase, getMatAutocompleteMissingPanelError }; //# sourceMappingURL=autocomplete.js.map