| (function (global, factory) { |
| typeof exports === 'object' && typeof module !== 'undefined' ? factory(exports, require('@angular/cdk/overlay'), require('@angular/common'), require('@angular/core'), require('@angular/material/core'), require('@angular/material/form-field'), require('@angular/cdk/scrolling'), require('@angular/cdk/a11y'), require('@angular/cdk/bidi'), require('@angular/cdk/coercion'), require('@angular/cdk/collections'), require('@angular/cdk/keycodes'), require('@angular/forms'), require('rxjs'), require('rxjs/operators'), require('@angular/animations')) : |
| typeof define === 'function' && define.amd ? define('@angular/material/select', ['exports', '@angular/cdk/overlay', '@angular/common', '@angular/core', '@angular/material/core', '@angular/material/form-field', '@angular/cdk/scrolling', '@angular/cdk/a11y', '@angular/cdk/bidi', '@angular/cdk/coercion', '@angular/cdk/collections', '@angular/cdk/keycodes', '@angular/forms', 'rxjs', 'rxjs/operators', '@angular/animations'], factory) : |
| (global = global || self, factory((global.ng = global.ng || {}, global.ng.material = global.ng.material || {}, global.ng.material.select = {}), global.ng.cdk.overlay, global.ng.common, global.ng.core, global.ng.material.core, global.ng.material.formField, global.ng.cdk.scrolling, global.ng.cdk.a11y, global.ng.cdk.bidi, global.ng.cdk.coercion, global.ng.cdk.collections, global.ng.cdk.keycodes, global.ng.forms, global.rxjs, global.rxjs.operators, global.ng.animations)); |
| }(this, (function (exports, overlay, common, core, core$1, formField, scrolling, a11y, bidi, coercion, collections, keycodes, forms, rxjs, operators, animations) { 'use strict'; |
| |
| /*! ***************************************************************************** |
| Copyright (c) Microsoft Corporation. |
| |
| Permission to use, copy, modify, and/or distribute this software for any |
| purpose with or without fee is hereby granted. |
| |
| THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH |
| REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY |
| AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, |
| INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM |
| LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR |
| OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR |
| PERFORMANCE OF THIS SOFTWARE. |
| ***************************************************************************** */ |
| /* global Reflect, Promise */ |
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| } |
| /** @deprecated */ |
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| for (var s = 0, i = 0, il = arguments.length; i < il; i++) |
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| privateMap.set(receiver, value); |
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| } |
| |
| /** |
| * @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 |
| */ |
| /** |
| * The following are all the animations for the mat-select component, with each |
| * const containing the metadata for one animation. |
| * |
| * The values below match the implementation of the AngularJS Material mat-select animation. |
| * @docs-private |
| */ |
| var matSelectAnimations = { |
| /** |
| * This animation ensures the select's overlay panel animation (transformPanel) is called when |
| * closing the select. |
| * This is needed due to https://github.com/angular/angular/issues/23302 |
| */ |
| transformPanelWrap: animations.trigger('transformPanelWrap', [ |
| animations.transition('* => void', animations.query('@transformPanel', [animations.animateChild()], { optional: true })) |
| ]), |
| /** |
| * This animation transforms the select's overlay panel on and off the page. |
| * |
| * When the panel is attached to the DOM, it expands its width by the amount of padding, scales it |
| * up to 100% on the Y axis, fades in its border, and translates slightly up and to the |
| * side to ensure the option text correctly overlaps the trigger text. |
| * |
| * When the panel is removed from the DOM, it simply fades out linearly. |
| */ |
| transformPanel: animations.trigger('transformPanel', [ |
| animations.state('void', animations.style({ |
| transform: 'scaleY(0.8)', |
| minWidth: '100%', |
| opacity: 0 |
| })), |
| animations.state('showing', animations.style({ |
| opacity: 1, |
| minWidth: 'calc(100% + 32px)', |
| transform: 'scaleY(1)' |
| })), |
| animations.state('showing-multiple', animations.style({ |
| opacity: 1, |
| minWidth: 'calc(100% + 64px)', |
| transform: 'scaleY(1)' |
| })), |
| animations.transition('void => *', animations.animate('120ms cubic-bezier(0, 0, 0.2, 1)')), |
| animations.transition('* => void', animations.animate('100ms 25ms linear', animations.style({ opacity: 0 }))) |
| ]) |
| }; |
| |
| /** |
| * @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 |
| */ |
| /** |
| * Returns an exception to be thrown when attempting to change a select's `multiple` option |
| * after initialization. |
| * @docs-private |
| */ |
| function getMatSelectDynamicMultipleError() { |
| return Error('Cannot change `multiple` mode of select after initialization.'); |
| } |
| /** |
| * Returns an exception to be thrown when attempting to assign a non-array value to a select |
| * in `multiple` mode. Note that `undefined` and `null` are still valid values to allow for |
| * resetting the value. |
| * @docs-private |
| */ |
| function getMatSelectNonArrayValueError() { |
| return Error('Value must be an array in multiple-selection mode.'); |
| } |
| /** |
| * Returns an exception to be thrown when assigning a non-function value to the comparator |
| * used to determine if a value corresponds to an option. Note that whether the function |
| * actually takes two values and returns a boolean is not checked. |
| */ |
| function getMatSelectNonFunctionValueError() { |
| return Error('`compareWith` must be a function.'); |
| } |
| |
| var nextUniqueId = 0; |
| /** |
| * The following style constants are necessary to save here in order |
| * to properly calculate the alignment of the selected option over |
| * the trigger element. |
| */ |
| /** |
| * The max height of the select's overlay panel. |
| * @deprecated To be turned into a private variable. |
| * @breaking-change 12.0.0 |
| */ |
| var SELECT_PANEL_MAX_HEIGHT = 256; |
| /** |
| * The panel's padding on the x-axis. |
| * @deprecated To be turned into a private variable. |
| * @breaking-change 12.0.0 |
| */ |
| var SELECT_PANEL_PADDING_X = 16; |
| /** |
| * The panel's x axis padding if it is indented (e.g. there is an option group). |
| * @deprecated To be turned into a private variable. |
| * @breaking-change 12.0.0 |
| */ |
| var SELECT_PANEL_INDENT_PADDING_X = SELECT_PANEL_PADDING_X * 2; |
| /** |
| * The height of the select items in `em` units. |
| * @deprecated To be turned into a private variable. |
| * @breaking-change 12.0.0 |
| */ |
| var SELECT_ITEM_HEIGHT_EM = 3; |
| // TODO(josephperrott): Revert to a constant after 2018 spec updates are fully merged. |
| /** |
| * Distance between the panel edge and the option text in |
| * multi-selection mode. |
| * |
| * Calculated as: |
| * (SELECT_PANEL_PADDING_X * 1.5) + 16 = 40 |
| * The padding is multiplied by 1.5 because the checkbox's margin is half the padding. |
| * The checkbox width is 16px. |
| * |
| * @deprecated To be turned into a private variable. |
| * @breaking-change 12.0.0 |
| */ |
| var SELECT_MULTIPLE_PANEL_PADDING_X = SELECT_PANEL_PADDING_X * 1.5 + 16; |
| /** |
| * The select panel will only "fit" inside the viewport if it is positioned at |
| * this value or more away from the viewport boundary. |
| * |
| * @deprecated To be turned into a private variable. |
| * @breaking-change 12.0.0 |
| */ |
| var SELECT_PANEL_VIEWPORT_PADDING = 8; |
| /** Injection token that determines the scroll handling while a select is open. */ |
| var MAT_SELECT_SCROLL_STRATEGY = new core.InjectionToken('mat-select-scroll-strategy'); |
| /** @docs-private */ |
| function MAT_SELECT_SCROLL_STRATEGY_PROVIDER_FACTORY(overlay) { |
| return function () { return overlay.scrollStrategies.reposition(); }; |
| } |
| /** Injection token that can be used to provide the default options the select module. */ |
| var MAT_SELECT_CONFIG = new core.InjectionToken('MAT_SELECT_CONFIG'); |
| /** @docs-private */ |
| var MAT_SELECT_SCROLL_STRATEGY_PROVIDER = { |
| provide: MAT_SELECT_SCROLL_STRATEGY, |
| deps: [overlay.Overlay], |
| useFactory: MAT_SELECT_SCROLL_STRATEGY_PROVIDER_FACTORY, |
| }; |
| /** Change event object that is emitted when the select value has changed. */ |
| var MatSelectChange = /** @class */ (function () { |
| function MatSelectChange( |
| /** Reference to the select that emitted the change event. */ |
| source, |
| /** Current value of the select that emitted the event. */ |
| value) { |
| this.source = source; |
| this.value = value; |
| } |
| return MatSelectChange; |
| }()); |
| // Boilerplate for applying mixins to MatSelect. |
| /** @docs-private */ |
| var MatSelectBase = /** @class */ (function () { |
| function MatSelectBase(_elementRef, _defaultErrorStateMatcher, _parentForm, _parentFormGroup, ngControl) { |
| this._elementRef = _elementRef; |
| this._defaultErrorStateMatcher = _defaultErrorStateMatcher; |
| this._parentForm = _parentForm; |
| this._parentFormGroup = _parentFormGroup; |
| this.ngControl = ngControl; |
| } |
| return MatSelectBase; |
| }()); |
| var _MatSelectMixinBase = core$1.mixinDisableRipple(core$1.mixinTabIndex(core$1.mixinDisabled(core$1.mixinErrorState(MatSelectBase)))); |
| /** |
| * Injection token that can be used to reference instances of `MatSelectTrigger`. It serves as |
| * alternative token to the actual `MatSelectTrigger` class which could cause unnecessary |
| * retention of the class and its directive metadata. |
| */ |
| var MAT_SELECT_TRIGGER = new core.InjectionToken('MatSelectTrigger'); |
| /** |
| * Allows the user to customize the trigger that is displayed when the select has a value. |
| */ |
| var MatSelectTrigger = /** @class */ (function () { |
| function MatSelectTrigger() { |
| } |
| return MatSelectTrigger; |
| }()); |
| MatSelectTrigger.decorators = [ |
| { type: core.Directive, args: [{ |
| selector: 'mat-select-trigger', |
| providers: [{ provide: MAT_SELECT_TRIGGER, useExisting: MatSelectTrigger }], |
| },] } |
| ]; |
| /** Base class with all of the `MatSelect` functionality. */ |
| var _MatSelectBase = /** @class */ (function (_super) { |
| __extends(_MatSelectBase, _super); |
| function _MatSelectBase(_viewportRuler, _changeDetectorRef, _ngZone, _defaultErrorStateMatcher, elementRef, _dir, _parentForm, _parentFormGroup, _parentFormField, ngControl, tabIndex, scrollStrategyFactory, _liveAnnouncer, _defaultOptions) { |
| var _this = this; |
| var _a, _b, _c; |
| _this = _super.call(this, elementRef, _defaultErrorStateMatcher, _parentForm, _parentFormGroup, ngControl) || this; |
| _this._viewportRuler = _viewportRuler; |
| _this._changeDetectorRef = _changeDetectorRef; |
| _this._ngZone = _ngZone; |
| _this._dir = _dir; |
| _this._parentFormField = _parentFormField; |
| _this.ngControl = ngControl; |
| _this._liveAnnouncer = _liveAnnouncer; |
| _this._defaultOptions = _defaultOptions; |
| /** Whether or not the overlay panel is open. */ |
| _this._panelOpen = false; |
| /** Comparison function to specify which option is displayed. Defaults to object equality. */ |
| _this._compareWith = function (o1, o2) { return o1 === o2; }; |
| /** Unique id for this input. */ |
| _this._uid = "mat-select-" + nextUniqueId++; |
| /** Current `ariar-labelledby` value for the select trigger. */ |
| _this._triggerAriaLabelledBy = null; |
| /** Emits whenever the component is destroyed. */ |
| _this._destroy = new rxjs.Subject(); |
| /** `View -> model callback called when value changes` */ |
| _this._onChange = function () { }; |
| /** `View -> model callback called when select has been touched` */ |
| _this._onTouched = function () { }; |
| /** ID for the DOM node containing the select's value. */ |
| _this._valueId = "mat-select-value-" + nextUniqueId++; |
| /** Emits when the panel element is finished transforming in. */ |
| _this._panelDoneAnimatingStream = new rxjs.Subject(); |
| _this._overlayPanelClass = ((_a = _this._defaultOptions) === null || _a === void 0 ? void 0 : _a.overlayPanelClass) || ''; |
| _this._focused = false; |
| /** A name for this control that can be used by `mat-form-field`. */ |
| _this.controlType = 'mat-select'; |
| _this._required = false; |
| _this._multiple = false; |
| _this._disableOptionCentering = (_c = (_b = _this._defaultOptions) === null || _b === void 0 ? void 0 : _b.disableOptionCentering) !== null && _c !== void 0 ? _c : false; |
| /** Aria label of the select. */ |
| _this.ariaLabel = ''; |
| /** Combined stream of all of the child options' change events. */ |
| _this.optionSelectionChanges = rxjs.defer(function () { |
| var options = _this.options; |
| if (options) { |
| return options.changes.pipe(operators.startWith(options), operators.switchMap(function () { return rxjs.merge.apply(void 0, __spread(options.map(function (option) { return option.onSelectionChange; }))); })); |
| } |
| return _this._ngZone.onStable |
| .pipe(operators.take(1), operators.switchMap(function () { return _this.optionSelectionChanges; })); |
| }); |
| /** Event emitted when the select panel has been toggled. */ |
| _this.openedChange = new core.EventEmitter(); |
| /** Event emitted when the select has been opened. */ |
| _this._openedStream = _this.openedChange.pipe(operators.filter(function (o) { return o; }), operators.map(function () { })); |
| /** Event emitted when the select has been closed. */ |
| _this._closedStream = _this.openedChange.pipe(operators.filter(function (o) { return !o; }), operators.map(function () { })); |
| /** Event emitted when the selected value has been changed by the user. */ |
| _this.selectionChange = new core.EventEmitter(); |
| /** |
| * Event that emits whenever the raw value of the select changes. This is here primarily |
| * to facilitate the two-way binding for the `value` input. |
| * @docs-private |
| */ |
| _this.valueChange = new core.EventEmitter(); |
| if (_this.ngControl) { |
| // Note: we provide the value accessor through here, instead of |
| // the `providers` to avoid running into a circular import. |
| _this.ngControl.valueAccessor = _this; |
| } |
| // Note that we only want to set this when the defaults pass it in, otherwise it should |
| // stay as `undefined` so that it falls back to the default in the key manager. |
| if ((_defaultOptions === null || _defaultOptions === void 0 ? void 0 : _defaultOptions.typeaheadDebounceInterval) != null) { |
| _this._typeaheadDebounceInterval = _defaultOptions.typeaheadDebounceInterval; |
| } |
| _this._scrollStrategyFactory = scrollStrategyFactory; |
| _this._scrollStrategy = _this._scrollStrategyFactory(); |
| _this.tabIndex = parseInt(tabIndex) || 0; |
| // Force setter to be called in case id was not specified. |
| _this.id = _this.id; |
| return _this; |
| } |
| Object.defineProperty(_MatSelectBase.prototype, "focused", { |
| /** Whether the select is focused. */ |
| get: function () { |
| return this._focused || this._panelOpen; |
| }, |
| enumerable: false, |
| configurable: true |
| }); |
| Object.defineProperty(_MatSelectBase.prototype, "placeholder", { |
| /** Placeholder to be shown if no value has been selected. */ |
| get: function () { return this._placeholder; }, |
| set: function (value) { |
| this._placeholder = value; |
| this.stateChanges.next(); |
| }, |
| enumerable: false, |
| configurable: true |
| }); |
| Object.defineProperty(_MatSelectBase.prototype, "required", { |
| /** Whether the component is required. */ |
| get: function () { return this._required; }, |
| set: function (value) { |
| this._required = coercion.coerceBooleanProperty(value); |
| this.stateChanges.next(); |
| }, |
| enumerable: false, |
| configurable: true |
| }); |
| Object.defineProperty(_MatSelectBase.prototype, "multiple", { |
| /** Whether the user should be allowed to select multiple options. */ |
| get: function () { return this._multiple; }, |
| set: function (value) { |
| if (this._selectionModel && (typeof ngDevMode === 'undefined' || ngDevMode)) { |
| throw getMatSelectDynamicMultipleError(); |
| } |
| this._multiple = coercion.coerceBooleanProperty(value); |
| }, |
| enumerable: false, |
| configurable: true |
| }); |
| Object.defineProperty(_MatSelectBase.prototype, "disableOptionCentering", { |
| /** Whether to center the active option over the trigger. */ |
| get: function () { return this._disableOptionCentering; }, |
| set: function (value) { |
| this._disableOptionCentering = coercion.coerceBooleanProperty(value); |
| }, |
| enumerable: false, |
| configurable: true |
| }); |
| Object.defineProperty(_MatSelectBase.prototype, "compareWith", { |
| /** |
| * Function to compare the option values with the selected values. The first argument |
| * is a value from an option. The second is a value from the selection. A boolean |
| * should be returned. |
| */ |
| get: function () { return this._compareWith; }, |
| set: function (fn) { |
| if (typeof fn !== 'function' && (typeof ngDevMode === 'undefined' || ngDevMode)) { |
| throw getMatSelectNonFunctionValueError(); |
| } |
| this._compareWith = fn; |
| if (this._selectionModel) { |
| // A different comparator means the selection could change. |
| this._initializeSelection(); |
| } |
| }, |
| enumerable: false, |
| configurable: true |
| }); |
| Object.defineProperty(_MatSelectBase.prototype, "value", { |
| /** Value of the select control. */ |
| get: function () { return this._value; }, |
| set: function (newValue) { |
| // Always re-assign an array, because it might have been mutated. |
| if (newValue !== this._value || (this._multiple && Array.isArray(newValue))) { |
| if (this.options) { |
| this._setSelectionByValue(newValue); |
| } |
| this._value = newValue; |
| } |
| }, |
| enumerable: false, |
| configurable: true |
| }); |
| Object.defineProperty(_MatSelectBase.prototype, "typeaheadDebounceInterval", { |
| /** Time to wait in milliseconds after the last keystroke before moving focus to an item. */ |
| get: function () { return this._typeaheadDebounceInterval; }, |
| set: function (value) { |
| this._typeaheadDebounceInterval = coercion.coerceNumberProperty(value); |
| }, |
| enumerable: false, |
| configurable: true |
| }); |
| Object.defineProperty(_MatSelectBase.prototype, "id", { |
| /** Unique id of the element. */ |
| get: function () { return this._id; }, |
| set: function (value) { |
| this._id = value || this._uid; |
| this.stateChanges.next(); |
| }, |
| enumerable: false, |
| configurable: true |
| }); |
| _MatSelectBase.prototype.ngOnInit = function () { |
| var _this = this; |
| this._selectionModel = new collections.SelectionModel(this.multiple); |
| this.stateChanges.next(); |
| // We need `distinctUntilChanged` here, because some browsers will |
| // fire the animation end event twice for the same animation. See: |
| // https://github.com/angular/angular/issues/24084 |
| this._panelDoneAnimatingStream |
| .pipe(operators.distinctUntilChanged(), operators.takeUntil(this._destroy)) |
| .subscribe(function () { return _this._panelDoneAnimating(_this.panelOpen); }); |
| }; |
| _MatSelectBase.prototype.ngAfterContentInit = function () { |
| var _this = this; |
| this._initKeyManager(); |
| this._selectionModel.changed.pipe(operators.takeUntil(this._destroy)).subscribe(function (event) { |
| event.added.forEach(function (option) { return option.select(); }); |
| event.removed.forEach(function (option) { return option.deselect(); }); |
| }); |
| this.options.changes.pipe(operators.startWith(null), operators.takeUntil(this._destroy)).subscribe(function () { |
| _this._resetOptions(); |
| _this._initializeSelection(); |
| }); |
| }; |
| _MatSelectBase.prototype.ngDoCheck = function () { |
| var newAriaLabelledby = this._getTriggerAriaLabelledby(); |
| // We have to manage setting the `aria-labelledby` ourselves, because part of its value |
| // is computed as a result of a content query which can cause this binding to trigger a |
| // "changed after checked" error. |
| if (newAriaLabelledby !== this._triggerAriaLabelledBy) { |
| var element = this._elementRef.nativeElement; |
| this._triggerAriaLabelledBy = newAriaLabelledby; |
| if (newAriaLabelledby) { |
| element.setAttribute('aria-labelledby', newAriaLabelledby); |
| } |
| else { |
| element.removeAttribute('aria-labelledby'); |
| } |
| } |
| if (this.ngControl) { |
| this.updateErrorState(); |
| } |
| }; |
| _MatSelectBase.prototype.ngOnChanges = function (changes) { |
| // Updating the disabled state is handled by `mixinDisabled`, but we need to additionally let |
| // the parent form field know to run change detection when the disabled state changes. |
| if (changes['disabled']) { |
| this.stateChanges.next(); |
| } |
| if (changes['typeaheadDebounceInterval'] && this._keyManager) { |
| this._keyManager.withTypeAhead(this._typeaheadDebounceInterval); |
| } |
| }; |
| _MatSelectBase.prototype.ngOnDestroy = function () { |
| this._destroy.next(); |
| this._destroy.complete(); |
| this.stateChanges.complete(); |
| }; |
| /** Toggles the overlay panel open or closed. */ |
| _MatSelectBase.prototype.toggle = function () { |
| this.panelOpen ? this.close() : this.open(); |
| }; |
| /** Opens the overlay panel. */ |
| _MatSelectBase.prototype.open = function () { |
| if (this._canOpen()) { |
| this._panelOpen = true; |
| this._keyManager.withHorizontalOrientation(null); |
| this._highlightCorrectOption(); |
| this._changeDetectorRef.markForCheck(); |
| } |
| }; |
| /** Closes the overlay panel and focuses the host element. */ |
| _MatSelectBase.prototype.close = function () { |
| if (this._panelOpen) { |
| this._panelOpen = false; |
| this._keyManager.withHorizontalOrientation(this._isRtl() ? 'rtl' : 'ltr'); |
| this._changeDetectorRef.markForCheck(); |
| this._onTouched(); |
| } |
| }; |
| /** |
| * Sets the select's value. Part of the ControlValueAccessor interface |
| * required to integrate with Angular's core forms API. |
| * |
| * @param value New value to be written to the model. |
| */ |
| _MatSelectBase.prototype.writeValue = function (value) { |
| this.value = value; |
| }; |
| /** |
| * Saves a callback function to be invoked when the select's value |
| * changes from user input. Part of the ControlValueAccessor interface |
| * required to integrate with Angular's core forms API. |
| * |
| * @param fn Callback to be triggered when the value changes. |
| */ |
| _MatSelectBase.prototype.registerOnChange = function (fn) { |
| this._onChange = fn; |
| }; |
| /** |
| * Saves a callback function to be invoked when the select is blurred |
| * by the user. Part of the ControlValueAccessor interface required |
| * to integrate with Angular's core forms API. |
| * |
| * @param fn Callback to be triggered when the component has been touched. |
| */ |
| _MatSelectBase.prototype.registerOnTouched = function (fn) { |
| this._onTouched = fn; |
| }; |
| /** |
| * Disables the select. Part of the ControlValueAccessor interface required |
| * to integrate with Angular's core forms API. |
| * |
| * @param isDisabled Sets whether the component is disabled. |
| */ |
| _MatSelectBase.prototype.setDisabledState = function (isDisabled) { |
| this.disabled = isDisabled; |
| this._changeDetectorRef.markForCheck(); |
| this.stateChanges.next(); |
| }; |
| Object.defineProperty(_MatSelectBase.prototype, "panelOpen", { |
| /** Whether or not the overlay panel is open. */ |
| get: function () { |
| return this._panelOpen; |
| }, |
| enumerable: false, |
| configurable: true |
| }); |
| Object.defineProperty(_MatSelectBase.prototype, "selected", { |
| /** The currently selected option. */ |
| get: function () { |
| return this.multiple ? this._selectionModel.selected : this._selectionModel.selected[0]; |
| }, |
| enumerable: false, |
| configurable: true |
| }); |
| Object.defineProperty(_MatSelectBase.prototype, "triggerValue", { |
| /** The value displayed in the trigger. */ |
| get: function () { |
| if (this.empty) { |
| return ''; |
| } |
| if (this._multiple) { |
| var selectedOptions = this._selectionModel.selected.map(function (option) { return option.viewValue; }); |
| if (this._isRtl()) { |
| selectedOptions.reverse(); |
| } |
| // TODO(crisbeto): delimiter should be configurable for proper localization. |
| return selectedOptions.join(', '); |
| } |
| return this._selectionModel.selected[0].viewValue; |
| }, |
| enumerable: false, |
| configurable: true |
| }); |
| /** Whether the element is in RTL mode. */ |
| _MatSelectBase.prototype._isRtl = function () { |
| return this._dir ? this._dir.value === 'rtl' : false; |
| }; |
| /** Handles all keydown events on the select. */ |
| _MatSelectBase.prototype._handleKeydown = function (event) { |
| if (!this.disabled) { |
| this.panelOpen ? this._handleOpenKeydown(event) : this._handleClosedKeydown(event); |
| } |
| }; |
| /** Handles keyboard events while the select is closed. */ |
| _MatSelectBase.prototype._handleClosedKeydown = function (event) { |
| var keyCode = event.keyCode; |
| var isArrowKey = keyCode === keycodes.DOWN_ARROW || keyCode === keycodes.UP_ARROW || |
| keyCode === keycodes.LEFT_ARROW || keyCode === keycodes.RIGHT_ARROW; |
| var isOpenKey = keyCode === keycodes.ENTER || keyCode === keycodes.SPACE; |
| var manager = this._keyManager; |
| // Open the select on ALT + arrow key to match the native <select> |
| if (!manager.isTyping() && (isOpenKey && !keycodes.hasModifierKey(event)) || |
| ((this.multiple || event.altKey) && isArrowKey)) { |
| event.preventDefault(); // prevents the page from scrolling down when pressing space |
| this.open(); |
| } |
| else if (!this.multiple) { |
| var previouslySelectedOption = this.selected; |
| manager.onKeydown(event); |
| var selectedOption = this.selected; |
| // Since the value has changed, we need to announce it ourselves. |
| if (selectedOption && previouslySelectedOption !== selectedOption) { |
| // We set a duration on the live announcement, because we want the live element to be |
| // cleared after a while so that users can't navigate to it using the arrow keys. |
| this._liveAnnouncer.announce(selectedOption.viewValue, 10000); |
| } |
| } |
| }; |
| /** Handles keyboard events when the selected is open. */ |
| _MatSelectBase.prototype._handleOpenKeydown = function (event) { |
| var manager = this._keyManager; |
| var keyCode = event.keyCode; |
| var isArrowKey = keyCode === keycodes.DOWN_ARROW || keyCode === keycodes.UP_ARROW; |
| var isTyping = manager.isTyping(); |
| if (isArrowKey && event.altKey) { |
| // Close the select on ALT + arrow key to match the native <select> |
| event.preventDefault(); |
| this.close(); |
| // Don't do anything in this case if the user is typing, |
| // because the typing sequence can include the space key. |
| } |
| else if (!isTyping && (keyCode === keycodes.ENTER || keyCode === keycodes.SPACE) && manager.activeItem && |
| !keycodes.hasModifierKey(event)) { |
| event.preventDefault(); |
| manager.activeItem._selectViaInteraction(); |
| } |
| else if (!isTyping && this._multiple && keyCode === keycodes.A && event.ctrlKey) { |
| event.preventDefault(); |
| var hasDeselectedOptions_1 = this.options.some(function (opt) { return !opt.disabled && !opt.selected; }); |
| this.options.forEach(function (option) { |
| if (!option.disabled) { |
| hasDeselectedOptions_1 ? option.select() : option.deselect(); |
| } |
| }); |
| } |
| else { |
| var previouslyFocusedIndex = manager.activeItemIndex; |
| manager.onKeydown(event); |
| if (this._multiple && isArrowKey && event.shiftKey && manager.activeItem && |
| manager.activeItemIndex !== previouslyFocusedIndex) { |
| manager.activeItem._selectViaInteraction(); |
| } |
| } |
| }; |
| _MatSelectBase.prototype._onFocus = function () { |
| if (!this.disabled) { |
| this._focused = true; |
| this.stateChanges.next(); |
| } |
| }; |
| /** |
| * Calls the touched callback only if the panel is closed. Otherwise, the trigger will |
| * "blur" to the panel when it opens, causing a false positive. |
| */ |
| _MatSelectBase.prototype._onBlur = function () { |
| this._focused = false; |
| if (!this.disabled && !this.panelOpen) { |
| this._onTouched(); |
| this._changeDetectorRef.markForCheck(); |
| this.stateChanges.next(); |
| } |
| }; |
| /** |
| * Callback that is invoked when the overlay panel has been attached. |
| */ |
| _MatSelectBase.prototype._onAttached = function () { |
| var _this = this; |
| this.overlayDir.positionChange.pipe(operators.take(1)).subscribe(function () { |
| _this._changeDetectorRef.detectChanges(); |
| _this._positioningSettled(); |
| }); |
| }; |
| /** Returns the theme to be used on the panel. */ |
| _MatSelectBase.prototype._getPanelTheme = function () { |
| return this._parentFormField ? "mat-" + this._parentFormField.color : ''; |
| }; |
| Object.defineProperty(_MatSelectBase.prototype, "empty", { |
| /** Whether the select has a value. */ |
| get: function () { |
| return !this._selectionModel || this._selectionModel.isEmpty(); |
| }, |
| enumerable: false, |
| configurable: true |
| }); |
| _MatSelectBase.prototype._initializeSelection = function () { |
| var _this = this; |
| // Defer setting the value in order to avoid the "Expression |
| // has changed after it was checked" errors from Angular. |
| Promise.resolve().then(function () { |
| _this._setSelectionByValue(_this.ngControl ? _this.ngControl.value : _this._value); |
| _this.stateChanges.next(); |
| }); |
| }; |
| /** |
| * Sets the selected option based on a value. If no option can be |
| * found with the designated value, the select trigger is cleared. |
| */ |
| _MatSelectBase.prototype._setSelectionByValue = function (value) { |
| var _this = this; |
| this._selectionModel.selected.forEach(function (option) { return option.setInactiveStyles(); }); |
| this._selectionModel.clear(); |
| if (this.multiple && value) { |
| if (!Array.isArray(value) && (typeof ngDevMode === 'undefined' || ngDevMode)) { |
| throw getMatSelectNonArrayValueError(); |
| } |
| value.forEach(function (currentValue) { return _this._selectValue(currentValue); }); |
| this._sortValues(); |
| } |
| else { |
| var correspondingOption = this._selectValue(value); |
| // Shift focus to the active item. Note that we shouldn't do this in multiple |
| // mode, because we don't know what option the user interacted with last. |
| if (correspondingOption) { |
| this._keyManager.updateActiveItem(correspondingOption); |
| } |
| else if (!this.panelOpen) { |
| // Otherwise reset the highlighted option. Note that we only want to do this while |
| // closed, because doing it while open can shift the user's focus unnecessarily. |
| this._keyManager.updateActiveItem(-1); |
| } |
| } |
| this._changeDetectorRef.markForCheck(); |
| }; |
| /** |
| * Finds and selects and option based on its value. |
| * @returns Option that has the corresponding value. |
| */ |
| _MatSelectBase.prototype._selectValue = function (value) { |
| var _this = this; |
| var correspondingOption = this.options.find(function (option) { |
| // Skip options that are already in the model. This allows us to handle cases |
| // where the same primitive value is selected multiple times. |
| if (_this._selectionModel.isSelected(option)) { |
| return false; |
| } |
| try { |
| // Treat null as a special reset value. |
| return option.value != null && _this._compareWith(option.value, value); |
| } |
| catch (error) { |
| if (typeof ngDevMode === 'undefined' || ngDevMode) { |
| // Notify developers of errors in their comparator. |
| console.warn(error); |
| } |
| return false; |
| } |
| }); |
| if (correspondingOption) { |
| this._selectionModel.select(correspondingOption); |
| } |
| return correspondingOption; |
| }; |
| /** Sets up a key manager to listen to keyboard events on the overlay panel. */ |
| _MatSelectBase.prototype._initKeyManager = function () { |
| var _this = this; |
| this._keyManager = new a11y.ActiveDescendantKeyManager(this.options) |
| .withTypeAhead(this._typeaheadDebounceInterval) |
| .withVerticalOrientation() |
| .withHorizontalOrientation(this._isRtl() ? 'rtl' : 'ltr') |
| .withHomeAndEnd() |
| .withAllowedModifierKeys(['shiftKey']); |
| this._keyManager.tabOut.pipe(operators.takeUntil(this._destroy)).subscribe(function () { |
| if (_this.panelOpen) { |
| // Select the active item when tabbing away. This is consistent with how the native |
| // select behaves. Note that we only want to do this in single selection mode. |
| if (!_this.multiple && _this._keyManager.activeItem) { |
| _this._keyManager.activeItem._selectViaInteraction(); |
| } |
| // Restore focus to the trigger before closing. Ensures that the focus |
| // position won't be lost if the user got focus into the overlay. |
| _this.focus(); |
| _this.close(); |
| } |
| }); |
| this._keyManager.change.pipe(operators.takeUntil(this._destroy)).subscribe(function () { |
| if (_this._panelOpen && _this.panel) { |
| _this._scrollOptionIntoView(_this._keyManager.activeItemIndex || 0); |
| } |
| else if (!_this._panelOpen && !_this.multiple && _this._keyManager.activeItem) { |
| _this._keyManager.activeItem._selectViaInteraction(); |
| } |
| }); |
| }; |
| /** Drops current option subscriptions and IDs and resets from scratch. */ |
| _MatSelectBase.prototype._resetOptions = function () { |
| var _this = this; |
| var changedOrDestroyed = rxjs.merge(this.options.changes, this._destroy); |
| this.optionSelectionChanges.pipe(operators.takeUntil(changedOrDestroyed)).subscribe(function (event) { |
| _this._onSelect(event.source, event.isUserInput); |
| if (event.isUserInput && !_this.multiple && _this._panelOpen) { |
| _this.close(); |
| _this.focus(); |
| } |
| }); |
| // Listen to changes in the internal state of the options and react accordingly. |
| // Handles cases like the labels of the selected options changing. |
| rxjs.merge.apply(void 0, __spread(this.options.map(function (option) { return option._stateChanges; }))).pipe(operators.takeUntil(changedOrDestroyed)) |
| .subscribe(function () { |
| _this._changeDetectorRef.markForCheck(); |
| _this.stateChanges.next(); |
| }); |
| }; |
| /** Invoked when an option is clicked. */ |
| _MatSelectBase.prototype._onSelect = function (option, isUserInput) { |
| var wasSelected = this._selectionModel.isSelected(option); |
| if (option.value == null && !this._multiple) { |
| option.deselect(); |
| this._selectionModel.clear(); |
| if (this.value != null) { |
| this._propagateChanges(option.value); |
| } |
| } |
| else { |
| if (wasSelected !== option.selected) { |
| option.selected ? this._selectionModel.select(option) : |
| this._selectionModel.deselect(option); |
| } |
| if (isUserInput) { |
| this._keyManager.setActiveItem(option); |
| } |
| if (this.multiple) { |
| this._sortValues(); |
| if (isUserInput) { |
| // In case the user selected the option with their mouse, we |
| // want to restore focus back to the trigger, in order to |
| // prevent the select keyboard controls from clashing with |
| // the ones from `mat-option`. |
| this.focus(); |
| } |
| } |
| } |
| if (wasSelected !== this._selectionModel.isSelected(option)) { |
| this._propagateChanges(); |
| } |
| this.stateChanges.next(); |
| }; |
| /** Sorts the selected values in the selected based on their order in the panel. */ |
| _MatSelectBase.prototype._sortValues = function () { |
| var _this = this; |
| if (this.multiple) { |
| var options_1 = this.options.toArray(); |
| this._selectionModel.sort(function (a, b) { |
| return _this.sortComparator ? _this.sortComparator(a, b, options_1) : |
| options_1.indexOf(a) - options_1.indexOf(b); |
| }); |
| this.stateChanges.next(); |
| } |
| }; |
| /** Emits change event to set the model value. */ |
| _MatSelectBase.prototype._propagateChanges = function (fallbackValue) { |
| var valueToEmit = null; |
| if (this.multiple) { |
| valueToEmit = this.selected.map(function (option) { return option.value; }); |
| } |
| else { |
| valueToEmit = this.selected ? this.selected.value : fallbackValue; |
| } |
| this._value = valueToEmit; |
| this.valueChange.emit(valueToEmit); |
| this._onChange(valueToEmit); |
| this.selectionChange.emit(this._getChangeEvent(valueToEmit)); |
| this._changeDetectorRef.markForCheck(); |
| }; |
| /** |
| * Highlights the selected item. If no option is selected, it will highlight |
| * the first item instead. |
| */ |
| _MatSelectBase.prototype._highlightCorrectOption = function () { |
| if (this._keyManager) { |
| if (this.empty) { |
| this._keyManager.setFirstItemActive(); |
| } |
| else { |
| this._keyManager.setActiveItem(this._selectionModel.selected[0]); |
| } |
| } |
| }; |
| /** Whether the panel is allowed to open. */ |
| _MatSelectBase.prototype._canOpen = function () { |
| var _a; |
| return !this._panelOpen && !this.disabled && ((_a = this.options) === null || _a === void 0 ? void 0 : _a.length) > 0; |
| }; |
| /** Focuses the select element. */ |
| _MatSelectBase.prototype.focus = function (options) { |
| this._elementRef.nativeElement.focus(options); |
| }; |
| /** Gets the aria-labelledby for the select panel. */ |
| _MatSelectBase.prototype._getPanelAriaLabelledby = function () { |
| var _a; |
| if (this.ariaLabel) { |
| return null; |
| } |
| var labelId = (_a = this._parentFormField) === null || _a === void 0 ? void 0 : _a.getLabelId(); |
| var labelExpression = (labelId ? labelId + ' ' : ''); |
| return this.ariaLabelledby ? labelExpression + this.ariaLabelledby : labelId; |
| }; |
| /** Determines the `aria-activedescendant` to be set on the host. */ |
| _MatSelectBase.prototype._getAriaActiveDescendant = function () { |
| if (this.panelOpen && this._keyManager && this._keyManager.activeItem) { |
| return this._keyManager.activeItem.id; |
| } |
| return null; |
| }; |
| /** Gets the aria-labelledby of the select component trigger. */ |
| _MatSelectBase.prototype._getTriggerAriaLabelledby = function () { |
| var _a; |
| if (this.ariaLabel) { |
| return null; |
| } |
| var labelId = (_a = this._parentFormField) === null || _a === void 0 ? void 0 : _a.getLabelId(); |
| var value = (labelId ? labelId + ' ' : '') + this._valueId; |
| if (this.ariaLabelledby) { |
| value += ' ' + this.ariaLabelledby; |
| } |
| return value; |
| }; |
| /** Called when the overlay panel is done animating. */ |
| _MatSelectBase.prototype._panelDoneAnimating = function (isOpen) { |
| this.openedChange.emit(isOpen); |
| }; |
| /** |
| * Implemented as part of MatFormFieldControl. |
| * @docs-private |
| */ |
| _MatSelectBase.prototype.setDescribedByIds = function (ids) { |
| this._ariaDescribedby = ids.join(' '); |
| }; |
| /** |
| * Implemented as part of MatFormFieldControl. |
| * @docs-private |
| */ |
| _MatSelectBase.prototype.onContainerClick = function () { |
| this.focus(); |
| this.open(); |
| }; |
| Object.defineProperty(_MatSelectBase.prototype, "shouldLabelFloat", { |
| /** |
| * Implemented as part of MatFormFieldControl. |
| * @docs-private |
| */ |
| get: function () { |
| return this._panelOpen || !this.empty || (this._focused && !!this._placeholder); |
| }, |
| enumerable: false, |
| configurable: true |
| }); |
| return _MatSelectBase; |
| }(_MatSelectMixinBase)); |
| _MatSelectBase.decorators = [ |
| { type: core.Directive } |
| ]; |
| _MatSelectBase.ctorParameters = function () { return [ |
| { type: scrolling.ViewportRuler }, |
| { type: core.ChangeDetectorRef }, |
| { type: core.NgZone }, |
| { type: core$1.ErrorStateMatcher }, |
| { type: core.ElementRef }, |
| { type: bidi.Directionality, decorators: [{ type: core.Optional }] }, |
| { type: forms.NgForm, decorators: [{ type: core.Optional }] }, |
| { type: forms.FormGroupDirective, decorators: [{ type: core.Optional }] }, |
| { type: formField.MatFormField, decorators: [{ type: core.Optional }, { type: core.Inject, args: [formField.MAT_FORM_FIELD,] }] }, |
| { type: forms.NgControl, decorators: [{ type: core.Self }, { type: core.Optional }] }, |
| { type: String, decorators: [{ type: core.Attribute, args: ['tabindex',] }] }, |
| { type: undefined, decorators: [{ type: core.Inject, args: [MAT_SELECT_SCROLL_STRATEGY,] }] }, |
| { type: a11y.LiveAnnouncer }, |
| { type: undefined, decorators: [{ type: core.Optional }, { type: core.Inject, args: [MAT_SELECT_CONFIG,] }] } |
| ]; }; |
| _MatSelectBase.propDecorators = { |
| trigger: [{ type: core.ViewChild, args: ['trigger',] }], |
| panel: [{ type: core.ViewChild, args: ['panel',] }], |
| overlayDir: [{ type: core.ViewChild, args: [overlay.CdkConnectedOverlay,] }], |
| panelClass: [{ type: core.Input }], |
| placeholder: [{ type: core.Input }], |
| required: [{ type: core.Input }], |
| multiple: [{ type: core.Input }], |
| disableOptionCentering: [{ type: core.Input }], |
| compareWith: [{ type: core.Input }], |
| value: [{ type: core.Input }], |
| ariaLabel: [{ type: core.Input, args: ['aria-label',] }], |
| ariaLabelledby: [{ type: core.Input, args: ['aria-labelledby',] }], |
| errorStateMatcher: [{ type: core.Input }], |
| typeaheadDebounceInterval: [{ type: core.Input }], |
| sortComparator: [{ type: core.Input }], |
| id: [{ type: core.Input }], |
| openedChange: [{ type: core.Output }], |
| _openedStream: [{ type: core.Output, args: ['opened',] }], |
| _closedStream: [{ type: core.Output, args: ['closed',] }], |
| selectionChange: [{ type: core.Output }], |
| valueChange: [{ type: core.Output }] |
| }; |
| var MatSelect = /** @class */ (function (_super) { |
| __extends(MatSelect, _super); |
| function MatSelect() { |
| var _this = _super.apply(this, __spread(arguments)) || this; |
| /** The scroll position of the overlay panel, calculated to center the selected option. */ |
| _this._scrollTop = 0; |
| /** The cached font-size of the trigger element. */ |
| _this._triggerFontSize = 0; |
| /** The value of the select panel's transform-origin property. */ |
| _this._transformOrigin = 'top'; |
| /** |
| * The y-offset of the overlay panel in relation to the trigger's top start corner. |
| * This must be adjusted to align the selected option text over the trigger text. |
| * when the panel opens. Will change based on the y-position of the selected option. |
| */ |
| _this._offsetY = 0; |
| _this._positions = [ |
| { |
| originX: 'start', |
| originY: 'top', |
| overlayX: 'start', |
| overlayY: 'top', |
| }, |
| { |
| originX: 'start', |
| originY: 'bottom', |
| overlayX: 'start', |
| overlayY: 'bottom', |
| }, |
| ]; |
| return _this; |
| } |
| /** |
| * Calculates the scroll position of the select's overlay panel. |
| * |
| * Attempts to center the selected option in the panel. If the option is |
| * too high or too low in the panel to be scrolled to the center, it clamps the |
| * scroll position to the min or max scroll positions respectively. |
| */ |
| MatSelect.prototype._calculateOverlayScroll = function (selectedIndex, scrollBuffer, maxScroll) { |
| var itemHeight = this._getItemHeight(); |
| var optionOffsetFromScrollTop = itemHeight * selectedIndex; |
| var halfOptionHeight = itemHeight / 2; |
| // Starts at the optionOffsetFromScrollTop, which scrolls the option to the top of the |
| // scroll container, then subtracts the scroll buffer to scroll the option down to |
| // the center of the overlay panel. Half the option height must be re-added to the |
| // scrollTop so the option is centered based on its middle, not its top edge. |
| var optimalScrollPosition = optionOffsetFromScrollTop - scrollBuffer + halfOptionHeight; |
| return Math.min(Math.max(0, optimalScrollPosition), maxScroll); |
| }; |
| MatSelect.prototype.ngOnInit = function () { |
| var _this = this; |
| _super.prototype.ngOnInit.call(this); |
| this._viewportRuler.change().pipe(operators.takeUntil(this._destroy)).subscribe(function () { |
| if (_this.panelOpen) { |
| _this._triggerRect = _this.trigger.nativeElement.getBoundingClientRect(); |
| _this._changeDetectorRef.markForCheck(); |
| } |
| }); |
| }; |
| MatSelect.prototype.open = function () { |
| var _this = this; |
| if (_super.prototype._canOpen.call(this)) { |
| _super.prototype.open.call(this); |
| this._triggerRect = this.trigger.nativeElement.getBoundingClientRect(); |
| // Note: The computed font-size will be a string pixel value (e.g. "16px"). |
| // `parseInt` ignores the trailing 'px' and converts this to a number. |
| this._triggerFontSize = |
| parseInt(getComputedStyle(this.trigger.nativeElement).fontSize || '0'); |
| this._calculateOverlayPosition(); |
| // Set the font size on the panel element once it exists. |
| this._ngZone.onStable.pipe(operators.take(1)).subscribe(function () { |
| if (_this._triggerFontSize && _this.overlayDir.overlayRef && |
| _this.overlayDir.overlayRef.overlayElement) { |
| _this.overlayDir.overlayRef.overlayElement.style.fontSize = _this._triggerFontSize + "px"; |
| } |
| }); |
| } |
| }; |
| /** Scrolls the active option into view. */ |
| MatSelect.prototype._scrollOptionIntoView = function (index) { |
| var labelCount = core$1._countGroupLabelsBeforeOption(index, this.options, this.optionGroups); |
| var itemHeight = this._getItemHeight(); |
| this.panel.nativeElement.scrollTop = core$1._getOptionScrollPosition((index + labelCount) * itemHeight, itemHeight, this.panel.nativeElement.scrollTop, SELECT_PANEL_MAX_HEIGHT); |
| }; |
| MatSelect.prototype._positioningSettled = function () { |
| this._calculateOverlayOffsetX(); |
| this.panel.nativeElement.scrollTop = this._scrollTop; |
| }; |
| MatSelect.prototype._panelDoneAnimating = function (isOpen) { |
| if (this.panelOpen) { |
| this._scrollTop = 0; |
| } |
| else { |
| this.overlayDir.offsetX = 0; |
| this._changeDetectorRef.markForCheck(); |
| } |
| _super.prototype._panelDoneAnimating.call(this, isOpen); |
| }; |
| MatSelect.prototype._getChangeEvent = function (value) { |
| return new MatSelectChange(this, value); |
| }; |
| /** |
| * Sets the x-offset of the overlay panel in relation to the trigger's top start corner. |
| * This must be adjusted to align the selected option text over the trigger text when |
| * the panel opens. Will change based on LTR or RTL text direction. Note that the offset |
| * can't be calculated until the panel has been attached, because we need to know the |
| * content width in order to constrain the panel within the viewport. |
| */ |
| MatSelect.prototype._calculateOverlayOffsetX = function () { |
| var overlayRect = this.overlayDir.overlayRef.overlayElement.getBoundingClientRect(); |
| var viewportSize = this._viewportRuler.getViewportSize(); |
| var isRtl = this._isRtl(); |
| var paddingWidth = this.multiple ? SELECT_MULTIPLE_PANEL_PADDING_X + SELECT_PANEL_PADDING_X : |
| SELECT_PANEL_PADDING_X * 2; |
| var offsetX; |
| // Adjust the offset, depending on the option padding. |
| if (this.multiple) { |
| offsetX = SELECT_MULTIPLE_PANEL_PADDING_X; |
| } |
| else if (this.disableOptionCentering) { |
| offsetX = SELECT_PANEL_PADDING_X; |
| } |
| else { |
| var selected = this._selectionModel.selected[0] || this.options.first; |
| offsetX = selected && selected.group ? SELECT_PANEL_INDENT_PADDING_X : SELECT_PANEL_PADDING_X; |
| } |
| // Invert the offset in LTR. |
| if (!isRtl) { |
| offsetX *= -1; |
| } |
| // Determine how much the select overflows on each side. |
| var leftOverflow = 0 - (overlayRect.left + offsetX - (isRtl ? paddingWidth : 0)); |
| var rightOverflow = overlayRect.right + offsetX - viewportSize.width |
| + (isRtl ? 0 : paddingWidth); |
| // If the element overflows on either side, reduce the offset to allow it to fit. |
| if (leftOverflow > 0) { |
| offsetX += leftOverflow + SELECT_PANEL_VIEWPORT_PADDING; |
| } |
| else if (rightOverflow > 0) { |
| offsetX -= rightOverflow + SELECT_PANEL_VIEWPORT_PADDING; |
| } |
| // Set the offset directly in order to avoid having to go through change detection and |
| // potentially triggering "changed after it was checked" errors. Round the value to avoid |
| // blurry content in some browsers. |
| this.overlayDir.offsetX = Math.round(offsetX); |
| this.overlayDir.overlayRef.updatePosition(); |
| }; |
| /** |
| * Calculates the y-offset of the select's overlay panel in relation to the |
| * top start corner of the trigger. It has to be adjusted in order for the |
| * selected option to be aligned over the trigger when the panel opens. |
| */ |
| MatSelect.prototype._calculateOverlayOffsetY = function (selectedIndex, scrollBuffer, maxScroll) { |
| var itemHeight = this._getItemHeight(); |
| var optionHeightAdjustment = (itemHeight - this._triggerRect.height) / 2; |
| var maxOptionsDisplayed = Math.floor(SELECT_PANEL_MAX_HEIGHT / itemHeight); |
| var optionOffsetFromPanelTop; |
| // Disable offset if requested by user by returning 0 as value to offset |
| if (this.disableOptionCentering) { |
| return 0; |
| } |
| if (this._scrollTop === 0) { |
| optionOffsetFromPanelTop = selectedIndex * itemHeight; |
| } |
| else if (this._scrollTop === maxScroll) { |
| var firstDisplayedIndex = this._getItemCount() - maxOptionsDisplayed; |
| var selectedDisplayIndex = selectedIndex - firstDisplayedIndex; |
| // The first item is partially out of the viewport. Therefore we need to calculate what |
| // portion of it is shown in the viewport and account for it in our offset. |
| var partialItemHeight = itemHeight - (this._getItemCount() * itemHeight - SELECT_PANEL_MAX_HEIGHT) % itemHeight; |
| // Because the panel height is longer than the height of the options alone, |
| // there is always extra padding at the top or bottom of the panel. When |
| // scrolled to the very bottom, this padding is at the top of the panel and |
| // must be added to the offset. |
| optionOffsetFromPanelTop = selectedDisplayIndex * itemHeight + partialItemHeight; |
| } |
| else { |
| // If the option was scrolled to the middle of the panel using a scroll buffer, |
| // its offset will be the scroll buffer minus the half height that was added to |
| // center it. |
| optionOffsetFromPanelTop = scrollBuffer - itemHeight / 2; |
| } |
| // The final offset is the option's offset from the top, adjusted for the height difference, |
| // multiplied by -1 to ensure that the overlay moves in the correct direction up the page. |
| // The value is rounded to prevent some browsers from blurring the content. |
| return Math.round(optionOffsetFromPanelTop * -1 - optionHeightAdjustment); |
| }; |
| /** |
| * Checks that the attempted overlay position will fit within the viewport. |
| * If it will not fit, tries to adjust the scroll position and the associated |
| * y-offset so the panel can open fully on-screen. If it still won't fit, |
| * sets the offset back to 0 to allow the fallback position to take over. |
| */ |
| MatSelect.prototype._checkOverlayWithinViewport = function (maxScroll) { |
| var itemHeight = this._getItemHeight(); |
| var viewportSize = this._viewportRuler.getViewportSize(); |
| var topSpaceAvailable = this._triggerRect.top - SELECT_PANEL_VIEWPORT_PADDING; |
| var bottomSpaceAvailable = viewportSize.height - this._triggerRect.bottom - SELECT_PANEL_VIEWPORT_PADDING; |
| var panelHeightTop = Math.abs(this._offsetY); |
| var totalPanelHeight = Math.min(this._getItemCount() * itemHeight, SELECT_PANEL_MAX_HEIGHT); |
| var panelHeightBottom = totalPanelHeight - panelHeightTop - this._triggerRect.height; |
| if (panelHeightBottom > bottomSpaceAvailable) { |
| this._adjustPanelUp(panelHeightBottom, bottomSpaceAvailable); |
| } |
| else if (panelHeightTop > topSpaceAvailable) { |
| this._adjustPanelDown(panelHeightTop, topSpaceAvailable, maxScroll); |
| } |
| else { |
| this._transformOrigin = this._getOriginBasedOnOption(); |
| } |
| }; |
| /** Adjusts the overlay panel up to fit in the viewport. */ |
| MatSelect.prototype._adjustPanelUp = function (panelHeightBottom, bottomSpaceAvailable) { |
| // Browsers ignore fractional scroll offsets, so we need to round. |
| var distanceBelowViewport = Math.round(panelHeightBottom - bottomSpaceAvailable); |
| // Scrolls the panel up by the distance it was extending past the boundary, then |
| // adjusts the offset by that amount to move the panel up into the viewport. |
| this._scrollTop -= distanceBelowViewport; |
| this._offsetY -= distanceBelowViewport; |
| this._transformOrigin = this._getOriginBasedOnOption(); |
| // If the panel is scrolled to the very top, it won't be able to fit the panel |
| // by scrolling, so set the offset to 0 to allow the fallback position to take |
| // effect. |
| if (this._scrollTop <= 0) { |
| this._scrollTop = 0; |
| this._offsetY = 0; |
| this._transformOrigin = "50% bottom 0px"; |
| } |
| }; |
| /** Adjusts the overlay panel down to fit in the viewport. */ |
| MatSelect.prototype._adjustPanelDown = function (panelHeightTop, topSpaceAvailable, maxScroll) { |
| // Browsers ignore fractional scroll offsets, so we need to round. |
| var distanceAboveViewport = Math.round(panelHeightTop - topSpaceAvailable); |
| // Scrolls the panel down by the distance it was extending past the boundary, then |
| // adjusts the offset by that amount to move the panel down into the viewport. |
| this._scrollTop += distanceAboveViewport; |
| this._offsetY += distanceAboveViewport; |
| this._transformOrigin = this._getOriginBasedOnOption(); |
| // If the panel is scrolled to the very bottom, it won't be able to fit the |
| // panel by scrolling, so set the offset to 0 to allow the fallback position |
| // to take effect. |
| if (this._scrollTop >= maxScroll) { |
| this._scrollTop = maxScroll; |
| this._offsetY = 0; |
| this._transformOrigin = "50% top 0px"; |
| return; |
| } |
| }; |
| /** Calculates the scroll position and x- and y-offsets of the overlay panel. */ |
| MatSelect.prototype._calculateOverlayPosition = function () { |
| var itemHeight = this._getItemHeight(); |
| var items = this._getItemCount(); |
| var panelHeight = Math.min(items * itemHeight, SELECT_PANEL_MAX_HEIGHT); |
| var scrollContainerHeight = items * itemHeight; |
| // The farthest the panel can be scrolled before it hits the bottom |
| var maxScroll = scrollContainerHeight - panelHeight; |
| // If no value is selected we open the popup to the first item. |
| var selectedOptionOffset; |
| if (this.empty) { |
| selectedOptionOffset = 0; |
| } |
| else { |
| selectedOptionOffset = |
| Math.max(this.options.toArray().indexOf(this._selectionModel.selected[0]), 0); |
| } |
| selectedOptionOffset += core$1._countGroupLabelsBeforeOption(selectedOptionOffset, this.options, this.optionGroups); |
| // We must maintain a scroll buffer so the selected option will be scrolled to the |
| // center of the overlay panel rather than the top. |
| var scrollBuffer = panelHeight / 2; |
| this._scrollTop = this._calculateOverlayScroll(selectedOptionOffset, scrollBuffer, maxScroll); |
| this._offsetY = this._calculateOverlayOffsetY(selectedOptionOffset, scrollBuffer, maxScroll); |
| this._checkOverlayWithinViewport(maxScroll); |
| }; |
| /** Sets the transform origin point based on the selected option. */ |
| MatSelect.prototype._getOriginBasedOnOption = function () { |
| var itemHeight = this._getItemHeight(); |
| var optionHeightAdjustment = (itemHeight - this._triggerRect.height) / 2; |
| var originY = Math.abs(this._offsetY) - optionHeightAdjustment + itemHeight / 2; |
| return "50% " + originY + "px 0px"; |
| }; |
| /** Calculates the height of the select's options. */ |
| MatSelect.prototype._getItemHeight = function () { |
| return this._triggerFontSize * SELECT_ITEM_HEIGHT_EM; |
| }; |
| /** Calculates the amount of items in the select. This includes options and group labels. */ |
| MatSelect.prototype._getItemCount = function () { |
| return this.options.length + this.optionGroups.length; |
| }; |
| return MatSelect; |
| }(_MatSelectBase)); |
| MatSelect.decorators = [ |
| { type: core.Component, args: [{ |
| selector: 'mat-select', |
| exportAs: 'matSelect', |
| template: "<!--\n Note that the select trigger element specifies `aria-owns` pointing to the listbox overlay.\n While aria-owns is not required for the ARIA 1.2 `role=\"combobox\"` interaction pattern,\n it fixes an issue with VoiceOver when the select appears inside of an `aria-model=\"true\"`\n element (e.g. a dialog). Without this `aria-owns`, the `aria-modal` on a dialog prevents\n VoiceOver from \"seeing\" the select's listbox overlay for aria-activedescendant.\n Using `aria-owns` re-parents the select overlay so that it works again.\n See https://github.com/angular/components/issues/20694\n-->\n<div cdk-overlay-origin\n [attr.aria-owns]=\"panelOpen ? id + '-panel' : null\"\n class=\"mat-select-trigger\"\n (click)=\"toggle()\"\n #origin=\"cdkOverlayOrigin\"\n #trigger>\n <div class=\"mat-select-value\" [ngSwitch]=\"empty\" [attr.id]=\"_valueId\">\n <span class=\"mat-select-placeholder mat-select-min-line\" *ngSwitchCase=\"true\">{{placeholder}}</span>\n <span class=\"mat-select-value-text\" *ngSwitchCase=\"false\" [ngSwitch]=\"!!customTrigger\">\n <span class=\"mat-select-min-line\" *ngSwitchDefault>{{triggerValue}}</span>\n <ng-content select=\"mat-select-trigger\" *ngSwitchCase=\"true\"></ng-content>\n </span>\n </div>\n\n <div class=\"mat-select-arrow-wrapper\"><div class=\"mat-select-arrow\"></div></div>\n</div>\n\n<ng-template\n cdk-connected-overlay\n cdkConnectedOverlayLockPosition\n cdkConnectedOverlayHasBackdrop\n cdkConnectedOverlayBackdropClass=\"cdk-overlay-transparent-backdrop\"\n [cdkConnectedOverlayPanelClass]=\"_overlayPanelClass\"\n [cdkConnectedOverlayScrollStrategy]=\"_scrollStrategy\"\n [cdkConnectedOverlayOrigin]=\"origin\"\n [cdkConnectedOverlayOpen]=\"panelOpen\"\n [cdkConnectedOverlayPositions]=\"_positions\"\n [cdkConnectedOverlayMinWidth]=\"_triggerRect?.width!\"\n [cdkConnectedOverlayOffsetY]=\"_offsetY\"\n (backdropClick)=\"close()\"\n (attach)=\"_onAttached()\"\n (detach)=\"close()\">\n <div class=\"mat-select-panel-wrap\" [@transformPanelWrap]>\n <div\n #panel\n role=\"listbox\"\n tabindex=\"-1\"\n class=\"mat-select-panel {{ _getPanelTheme() }}\"\n [attr.id]=\"id + '-panel'\"\n [attr.aria-multiselectable]=\"multiple\"\n [attr.aria-label]=\"ariaLabel || null\"\n [attr.aria-labelledby]=\"_getPanelAriaLabelledby()\"\n [ngClass]=\"panelClass\"\n [@transformPanel]=\"multiple ? 'showing-multiple' : 'showing'\"\n (@transformPanel.done)=\"_panelDoneAnimatingStream.next($event.toState)\"\n [style.transformOrigin]=\"_transformOrigin\"\n [style.font-size.px]=\"_triggerFontSize\"\n (keydown)=\"_handleKeydown($event)\">\n <ng-content></ng-content>\n </div>\n </div>\n</ng-template>\n", |
| inputs: ['disabled', 'disableRipple', 'tabIndex'], |
| encapsulation: core.ViewEncapsulation.None, |
| changeDetection: core.ChangeDetectionStrategy.OnPush, |
| host: { |
| 'role': 'combobox', |
| 'aria-autocomplete': 'none', |
| // TODO(crisbeto): the value for aria-haspopup should be `listbox`, but currently it's difficult |
| // to sync into Google, because of an outdated automated a11y check which flags it as an invalid |
| // value. At some point we should try to switch it back to being `listbox`. |
| 'aria-haspopup': 'true', |
| 'class': 'mat-select', |
| '[attr.id]': 'id', |
| '[attr.tabindex]': 'tabIndex', |
| '[attr.aria-controls]': 'panelOpen ? id + "-panel" : null', |
| '[attr.aria-expanded]': 'panelOpen', |
| '[attr.aria-label]': 'ariaLabel || null', |
| '[attr.aria-required]': 'required.toString()', |
| '[attr.aria-disabled]': 'disabled.toString()', |
| '[attr.aria-invalid]': 'errorState', |
| '[attr.aria-describedby]': '_ariaDescribedby || null', |
| '[attr.aria-activedescendant]': '_getAriaActiveDescendant()', |
| '[class.mat-select-disabled]': 'disabled', |
| '[class.mat-select-invalid]': 'errorState', |
| '[class.mat-select-required]': 'required', |
| '[class.mat-select-empty]': 'empty', |
| '[class.mat-select-multiple]': 'multiple', |
| '(keydown)': '_handleKeydown($event)', |
| '(focus)': '_onFocus()', |
| '(blur)': '_onBlur()', |
| }, |
| animations: [ |
| matSelectAnimations.transformPanelWrap, |
| matSelectAnimations.transformPanel |
| ], |
| providers: [ |
| { provide: formField.MatFormFieldControl, useExisting: MatSelect }, |
| { provide: core$1.MAT_OPTION_PARENT_COMPONENT, useExisting: MatSelect } |
| ], |
| styles: [".mat-select{display:inline-block;width:100%;outline:none}.mat-select-trigger{display:inline-table;cursor:pointer;position:relative;box-sizing:border-box}.mat-select-disabled .mat-select-trigger{-webkit-user-select:none;-moz-user-select:none;-ms-user-select:none;user-select:none;cursor:default}.mat-select-value{display:table-cell;max-width:0;width:100%;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.mat-select-value-text{white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.mat-select-arrow-wrapper{display:table-cell;vertical-align:middle}.mat-form-field-appearance-fill .mat-select-arrow-wrapper{transform:translateY(-50%)}.mat-form-field-appearance-outline .mat-select-arrow-wrapper{transform:translateY(-25%)}.mat-form-field-appearance-standard.mat-form-field-has-label .mat-select:not(.mat-select-empty) .mat-select-arrow-wrapper{transform:translateY(-50%)}.mat-form-field-appearance-standard .mat-select.mat-select-empty .mat-select-arrow-wrapper{transition:transform 400ms cubic-bezier(0.25, 0.8, 0.25, 1)}._mat-animation-noopable.mat-form-field-appearance-standard .mat-select.mat-select-empty .mat-select-arrow-wrapper{transition:none}.mat-select-arrow{width:0;height:0;border-left:5px solid transparent;border-right:5px solid transparent;border-top:5px solid;margin:0 4px}.mat-select-panel-wrap{flex-basis:100%}.mat-select-panel{min-width:112px;max-width:280px;overflow:auto;-webkit-overflow-scrolling:touch;padding-top:0;padding-bottom:0;max-height:256px;min-width:100%;border-radius:4px;outline:0}.cdk-high-contrast-active .mat-select-panel{outline:solid 1px}.mat-select-panel .mat-optgroup-label,.mat-select-panel .mat-option{font-size:inherit;line-height:3em;height:3em}.mat-form-field-type-mat-select:not(.mat-form-field-disabled) .mat-form-field-flex{cursor:pointer}.mat-form-field-type-mat-select .mat-form-field-label{width:calc(100% - 18px)}.mat-select-placeholder{transition:color 400ms 133.3333333333ms cubic-bezier(0.25, 0.8, 0.25, 1)}._mat-animation-noopable .mat-select-placeholder{transition:none}.mat-form-field-hide-placeholder .mat-select-placeholder{color:transparent;-webkit-text-fill-color:transparent;transition:none;display:block}.mat-select-min-line:empty::before{content:\" \";white-space:pre;width:1px}\n"] |
| },] } |
| ]; |
| MatSelect.propDecorators = { |
| options: [{ type: core.ContentChildren, args: [core$1.MatOption, { descendants: true },] }], |
| optionGroups: [{ type: core.ContentChildren, args: [core$1.MAT_OPTGROUP, { descendants: true },] }], |
| customTrigger: [{ type: core.ContentChild, args: [MAT_SELECT_TRIGGER,] }] |
| }; |
| |
| /** |
| * @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 |
| */ |
| var MatSelectModule = /** @class */ (function () { |
| function MatSelectModule() { |
| } |
| return MatSelectModule; |
| }()); |
| MatSelectModule.decorators = [ |
| { type: core.NgModule, args: [{ |
| imports: [ |
| common.CommonModule, |
| overlay.OverlayModule, |
| core$1.MatOptionModule, |
| core$1.MatCommonModule, |
| ], |
| exports: [ |
| scrolling.CdkScrollableModule, |
| formField.MatFormFieldModule, |
| MatSelect, |
| MatSelectTrigger, |
| core$1.MatOptionModule, |
| core$1.MatCommonModule |
| ], |
| declarations: [MatSelect, MatSelectTrigger], |
| providers: [MAT_SELECT_SCROLL_STRATEGY_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. |
| */ |
| |
| exports.MAT_SELECT_CONFIG = MAT_SELECT_CONFIG; |
| exports.MAT_SELECT_SCROLL_STRATEGY = MAT_SELECT_SCROLL_STRATEGY; |
| exports.MAT_SELECT_SCROLL_STRATEGY_PROVIDER = MAT_SELECT_SCROLL_STRATEGY_PROVIDER; |
| exports.MAT_SELECT_SCROLL_STRATEGY_PROVIDER_FACTORY = MAT_SELECT_SCROLL_STRATEGY_PROVIDER_FACTORY; |
| exports.MAT_SELECT_TRIGGER = MAT_SELECT_TRIGGER; |
| exports.MatSelect = MatSelect; |
| exports.MatSelectChange = MatSelectChange; |
| exports.MatSelectModule = MatSelectModule; |
| exports.MatSelectTrigger = MatSelectTrigger; |
| exports.SELECT_ITEM_HEIGHT_EM = SELECT_ITEM_HEIGHT_EM; |
| exports.SELECT_MULTIPLE_PANEL_PADDING_X = SELECT_MULTIPLE_PANEL_PADDING_X; |
| exports.SELECT_PANEL_INDENT_PADDING_X = SELECT_PANEL_INDENT_PADDING_X; |
| exports.SELECT_PANEL_MAX_HEIGHT = SELECT_PANEL_MAX_HEIGHT; |
| exports.SELECT_PANEL_PADDING_X = SELECT_PANEL_PADDING_X; |
| exports.SELECT_PANEL_VIEWPORT_PADDING = SELECT_PANEL_VIEWPORT_PADDING; |
| exports._MatSelectBase = _MatSelectBase; |
| exports.matSelectAnimations = matSelectAnimations; |
| |
| Object.defineProperty(exports, '__esModule', { value: true }); |
| |
| }))); |
| //# sourceMappingURL=material-select.umd.js.map |
