/**
 * @license
 * Copyright Google LLC All Rights Reserved.
 *
 * Use of this source code is governed by an MIT-style license that can be
 * found in the LICENSE file at https://angular.io/license
 */
import { InjectionToken, Directive, TemplateRef, ChangeDetectionStrategy, ChangeDetectorRef, Component, ContentChild, EventEmitter, ElementRef, Input, Inject, Optional, Output, SkipSelf, ViewContainerRef, ViewEncapsulation, ViewChild, Host, ContentChildren, NgModule } from '@angular/core';
import { animate, animateChild, group, state, style, transition, trigger, query } from '@angular/animations';
import { __extends } from 'tslib';
import { CdkAccordionItem, CdkAccordion, CdkAccordionModule } from '@angular/cdk/accordion';
import { coerceBooleanProperty } from '@angular/cdk/coercion';
import { UniqueSelectionDispatcher } from '@angular/cdk/collections';
import { TemplatePortal, PortalModule } from '@angular/cdk/portal';
import { DOCUMENT, CommonModule } from '@angular/common';
import { ANIMATION_MODULE_TYPE } from '@angular/platform-browser/animations';
import { Subject, merge, Subscription, EMPTY } from 'rxjs';
import { filter, startWith, take, distinctUntilChanged } from 'rxjs/operators';
import { FocusMonitor, FocusKeyManager } from '@angular/cdk/a11y';
import { ENTER, SPACE, hasModifierKey, HOME, END } from '@angular/cdk/keycodes';

/**
 * @fileoverview added by tsickle
 * @suppress {checkTypes,extraRequire,missingReturn,unusedPrivateMembers,uselessCode} checked by tsc
 */
/**
 * Token used to provide a `MatAccordion` to `MatExpansionPanel`.
 * Used primarily to avoid circular imports between `MatAccordion` and `MatExpansionPanel`.
 * @type {?}
 */
var MAT_ACCORDION = new InjectionToken('MAT_ACCORDION');

/**
 * @fileoverview added by tsickle
 * @suppress {checkTypes,extraRequire,missingReturn,unusedPrivateMembers,uselessCode} checked by tsc
 */
/**
 * Time and timing curve for expansion panel animations.
 * @type {?}
 */
var EXPANSION_PANEL_ANIMATION_TIMING = '225ms cubic-bezier(0.4,0.0,0.2,1)';
/**
 * Animations used by the Material expansion panel.
 *
 * A bug in angular animation's `state` when ViewContainers are moved using ViewContainerRef.move()
 * causes the animation state of moved components to become `void` upon exit, and not update again
 * upon reentry into the DOM.  This can lead a to situation for the expansion panel where the state
 * of the panel is `expanded` or `collapsed` but the animation state is `void`.
 *
 * To correctly handle animating to the next state, we animate between `void` and `collapsed` which
 * are defined to have the same styles. Since angular animates from the current styles to the
 * destination state's style definition, in situations where we are moving from `void`'s styles to
 * `collapsed` this acts a noop since no style values change.
 *
 * In the case where angular's animation state is out of sync with the expansion panel's state, the
 * expansion panel being `expanded` and angular animations being `void`, the animation from the
 * `expanded`'s effective styles (though in a `void` animation state) to the collapsed state will
 * occur as expected.
 *
 * Angular Bug: https://github.com/angular/angular/issues/18847
 *
 * \@docs-private
 * @type {?}
 */
var matExpansionAnimations = {
    /**
     * Animation that rotates the indicator arrow.
     */
    indicatorRotate: trigger('indicatorRotate', [
        state('collapsed, void', style({ transform: 'rotate(0deg)' })),
        state('expanded', style({ transform: 'rotate(180deg)' })),
        transition('expanded <=> collapsed, void => collapsed', animate(EXPANSION_PANEL_ANIMATION_TIMING)),
    ]),
    /**
     * Animation that expands and collapses the panel header height.
     */
    expansionHeaderHeight: trigger('expansionHeight', [
        state('collapsed, void', style({
            height: '{{collapsedHeight}}',
        }), {
            params: { collapsedHeight: '48px' },
        }),
        state('expanded', style({
            height: '{{expandedHeight}}'
        }), {
            params: { expandedHeight: '64px' }
        }),
        transition('expanded <=> collapsed, void => collapsed', group([
            query('@indicatorRotate', animateChild(), { optional: true }),
            animate(EXPANSION_PANEL_ANIMATION_TIMING),
        ])),
    ]),
    /**
     * Animation that expands and collapses the panel content.
     */
    bodyExpansion: trigger('bodyExpansion', [
        state('collapsed, void', style({ height: '0px', visibility: 'hidden' })),
        state('expanded', style({ height: '*', visibility: 'visible' })),
        transition('expanded <=> collapsed, void => collapsed', animate(EXPANSION_PANEL_ANIMATION_TIMING)),
    ])
};

/**
 * @fileoverview added by tsickle
 * @suppress {checkTypes,extraRequire,missingReturn,unusedPrivateMembers,uselessCode} checked by tsc
 */
/**
 * Expansion panel content that will be rendered lazily
 * after the panel is opened for the first time.
 */
var MatExpansionPanelContent = /** @class */ (function () {
    function MatExpansionPanelContent(_template) {
        this._template = _template;
    }
    MatExpansionPanelContent.decorators = [
        { type: Directive, args: [{
                    selector: 'ng-template[matExpansionPanelContent]'
                },] },
    ];
    /** @nocollapse */
    MatExpansionPanelContent.ctorParameters = function () { return [
        { type: TemplateRef }
    ]; };
    return MatExpansionPanelContent;
}());

/**
 * @fileoverview added by tsickle
 * @suppress {checkTypes,extraRequire,missingReturn,unusedPrivateMembers,uselessCode} checked by tsc
 */
/**
 * Counter for generating unique element ids.
 * @type {?}
 */
var uniqueId = 0;
var ɵ0 = undefined;
/**
 * `<mat-expansion-panel>`
 *
 * This component can be used as a single element to show expandable content, or as one of
 * multiple children of an element with the MatAccordion directive attached.
 */
var MatExpansionPanel = /** @class */ (function (_super) {
    __extends(MatExpansionPanel, _super);
    function MatExpansionPanel(accordion, _changeDetectorRef, _uniqueSelectionDispatcher, _viewContainerRef, 
    // @breaking-change 8.0.0 _document and _animationMode to be made required
    _document, _animationMode) {
        var _this = _super.call(this, accordion, _changeDetectorRef, _uniqueSelectionDispatcher) || this;
        _this._viewContainerRef = _viewContainerRef;
        _this._animationMode = _animationMode;
        _this._hideToggle = false;
        /**
         * An event emitted after the body's expansion animation happens.
         */
        _this.afterExpand = new EventEmitter();
        /**
         * An event emitted after the body's collapse animation happens.
         */
        _this.afterCollapse = new EventEmitter();
        /**
         * Stream that emits for changes in `\@Input` properties.
         */
        _this._inputChanges = new Subject();
        /**
         * ID for the associated header element. Used for a11y labelling.
         */
        _this._headerId = "mat-expansion-panel-header-" + uniqueId++;
        /**
         * Stream of body animation done events.
         */
        _this._bodyAnimationDone = new Subject();
        _this.accordion = accordion;
        _this._document = _document;
        // We need a Subject with distinctUntilChanged, because the `done` event
        // fires twice on some browsers. See https://github.com/angular/angular/issues/24084
        _this._bodyAnimationDone.pipe(distinctUntilChanged(function (x, y) {
            return x.fromState === y.fromState && x.toState === y.toState;
        })).subscribe(function (event) {
            if (event.fromState !== 'void') {
                if (event.toState === 'expanded') {
                    _this.afterExpand.emit();
                }
                else if (event.toState === 'collapsed') {
                    _this.afterCollapse.emit();
                }
            }
        });
        return _this;
    }
    Object.defineProperty(MatExpansionPanel.prototype, "hideToggle", {
        /** Whether the toggle indicator should be hidden. */
        get: /**
         * Whether the toggle indicator should be hidden.
         * @return {?}
         */
        function () {
            return this._hideToggle || (this.accordion && this.accordion.hideToggle);
        },
        set: /**
         * @param {?} value
         * @return {?}
         */
        function (value) {
            this._hideToggle = coerceBooleanProperty(value);
        },
        enumerable: true,
        configurable: true
    });
    /** Determines whether the expansion panel should have spacing between it and its siblings. */
    /**
     * Determines whether the expansion panel should have spacing between it and its siblings.
     * @return {?}
     */
    MatExpansionPanel.prototype._hasSpacing = /**
     * Determines whether the expansion panel should have spacing between it and its siblings.
     * @return {?}
     */
    function () {
        if (this.accordion) {
            // We don't need to subscribe to the `stateChanges` of the parent accordion because each time
            // the [displayMode] input changes, the change detection will also cover the host bindings
            // of this expansion panel.
            return (this.expanded ? this.accordion.displayMode : this._getExpandedState()) === 'default';
        }
        return false;
    };
    /** Gets the expanded state string. */
    /**
     * Gets the expanded state string.
     * @return {?}
     */
    MatExpansionPanel.prototype._getExpandedState = /**
     * Gets the expanded state string.
     * @return {?}
     */
    function () {
        return this.expanded ? 'expanded' : 'collapsed';
    };
    /**
     * @return {?}
     */
    MatExpansionPanel.prototype.ngAfterContentInit = /**
     * @return {?}
     */
    function () {
        var _this = this;
        if (this._lazyContent) {
            // Render the content as soon as the panel becomes open.
            this.opened.pipe(startWith((/** @type {?} */ (null))), filter(function () { return _this.expanded && !_this._portal; }), take(1)).subscribe(function () {
                _this._portal = new TemplatePortal(_this._lazyContent._template, _this._viewContainerRef);
            });
        }
    };
    /**
     * @param {?} changes
     * @return {?}
     */
    MatExpansionPanel.prototype.ngOnChanges = /**
     * @param {?} changes
     * @return {?}
     */
    function (changes) {
        this._inputChanges.next(changes);
    };
    /**
     * @return {?}
     */
    MatExpansionPanel.prototype.ngOnDestroy = /**
     * @return {?}
     */
    function () {
        _super.prototype.ngOnDestroy.call(this);
        this._bodyAnimationDone.complete();
        this._inputChanges.complete();
    };
    /** Checks whether the expansion panel's content contains the currently-focused element. */
    /**
     * Checks whether the expansion panel's content contains the currently-focused element.
     * @return {?}
     */
    MatExpansionPanel.prototype._containsFocus = /**
     * Checks whether the expansion panel's content contains the currently-focused element.
     * @return {?}
     */
    function () {
        if (this._body && this._document) {
            /** @type {?} */
            var focusedElement = this._document.activeElement;
            /** @type {?} */
            var bodyElement = this._body.nativeElement;
            return focusedElement === bodyElement || bodyElement.contains(focusedElement);
        }
        return false;
    };
    MatExpansionPanel.decorators = [
        { type: Component, args: [{styles: [".mat-expansion-panel{box-sizing:content-box;display:block;margin:0;border-radius:4px;overflow:hidden;transition:margin 225ms cubic-bezier(.4,0,.2,1),box-shadow 280ms cubic-bezier(.4,0,.2,1)}.mat-accordion .mat-expansion-panel:not(.mat-expanded),.mat-accordion .mat-expansion-panel:not(.mat-expansion-panel-spacing){border-radius:0}.mat-accordion .mat-expansion-panel:first-of-type{border-top-right-radius:4px;border-top-left-radius:4px}.mat-accordion .mat-expansion-panel:last-of-type{border-bottom-right-radius:4px;border-bottom-left-radius:4px}@media screen and (-ms-high-contrast:active){.mat-expansion-panel{outline:solid 1px}}.mat-expansion-panel._mat-animation-noopable,.mat-expansion-panel.ng-animate-disabled,.ng-animate-disabled .mat-expansion-panel{transition:none}.mat-expansion-panel-content{display:flex;flex-direction:column;overflow:visible}.mat-expansion-panel-body{padding:0 24px 16px}.mat-expansion-panel-spacing{margin:16px 0}.mat-accordion>.mat-expansion-panel-spacing:first-child,.mat-accordion>:first-child:not(.mat-expansion-panel) .mat-expansion-panel-spacing{margin-top:0}.mat-accordion>.mat-expansion-panel-spacing:last-child,.mat-accordion>:last-child:not(.mat-expansion-panel) .mat-expansion-panel-spacing{margin-bottom:0}.mat-action-row{border-top-style:solid;border-top-width:1px;display:flex;flex-direction:row;justify-content:flex-end;padding:16px 8px 16px 24px}.mat-action-row button.mat-button{margin-left:8px}[dir=rtl] .mat-action-row button.mat-button{margin-left:0;margin-right:8px}"],
                    selector: 'mat-expansion-panel',
                    exportAs: 'matExpansionPanel',
                    template: "<ng-content select=\"mat-expansion-panel-header\"></ng-content><div class=\"mat-expansion-panel-content\" role=\"region\" [@bodyExpansion]=\"_getExpandedState()\" (@bodyExpansion.done)=\"_bodyAnimationDone.next($event)\" [attr.aria-labelledby]=\"_headerId\" [id]=\"id\" #body><div class=\"mat-expansion-panel-body\"><ng-content></ng-content><ng-template [cdkPortalOutlet]=\"_portal\"></ng-template></div><ng-content select=\"mat-action-row\"></ng-content></div>",
                    encapsulation: ViewEncapsulation.None,
                    changeDetection: ChangeDetectionStrategy.OnPush,
                    inputs: ['disabled', 'expanded'],
                    outputs: ['opened', 'closed', 'expandedChange'],
                    animations: [matExpansionAnimations.bodyExpansion],
                    providers: [
                        // Provide MatAccordion as undefined to prevent nested expansion panels from registering
                        // to the same accordion.
                        { provide: MAT_ACCORDION, useValue: ɵ0 },
                    ],
                    host: {
                        'class': 'mat-expansion-panel',
                        '[class.mat-expanded]': 'expanded',
                        '[class._mat-animation-noopable]': '_animationMode === "NoopAnimations"',
                        '[class.mat-expansion-panel-spacing]': '_hasSpacing()',
                    }
                },] },
    ];
    /** @nocollapse */
    MatExpansionPanel.ctorParameters = function () { return [
        { type: undefined, decorators: [{ type: Optional }, { type: SkipSelf }, { type: Inject, args: [MAT_ACCORDION,] }] },
        { type: ChangeDetectorRef },
        { type: UniqueSelectionDispatcher },
        { type: ViewContainerRef },
        { type: undefined, decorators: [{ type: Inject, args: [DOCUMENT,] }] },
        { type: String, decorators: [{ type: Optional }, { type: Inject, args: [ANIMATION_MODULE_TYPE,] }] }
    ]; };
    MatExpansionPanel.propDecorators = {
        hideToggle: [{ type: Input }],
        afterExpand: [{ type: Output }],
        afterCollapse: [{ type: Output }],
        _lazyContent: [{ type: ContentChild, args: [MatExpansionPanelContent,] }],
        _body: [{ type: ViewChild, args: ['body',] }]
    };
    return MatExpansionPanel;
}(CdkAccordionItem));
var MatExpansionPanelActionRow = /** @class */ (function () {
    function MatExpansionPanelActionRow() {
    }
    MatExpansionPanelActionRow.decorators = [
        { type: Directive, args: [{
                    selector: 'mat-action-row',
                    host: {
                        class: 'mat-action-row'
                    }
                },] },
    ];
    return MatExpansionPanelActionRow;
}());

/**
 * @fileoverview added by tsickle
 * @suppress {checkTypes,extraRequire,missingReturn,unusedPrivateMembers,uselessCode} checked by tsc
 */
/**
 * `<mat-expansion-panel-header>`
 *
 * This component corresponds to the header element of an `<mat-expansion-panel>`.
 */
var MatExpansionPanelHeader = /** @class */ (function () {
    function MatExpansionPanelHeader(panel, _element, _focusMonitor, _changeDetectorRef) {
        var _this = this;
        this.panel = panel;
        this._element = _element;
        this._focusMonitor = _focusMonitor;
        this._changeDetectorRef = _changeDetectorRef;
        this._parentChangeSubscription = Subscription.EMPTY;
        /** @type {?} */
        var accordionHideToggleChange = panel.accordion ?
            panel.accordion._stateChanges.pipe(filter(function (changes) { return !!changes.hideToggle; })) : EMPTY;
        // Since the toggle state depends on an @Input on the panel, we
        // need to subscribe and trigger change detection manually.
        this._parentChangeSubscription = merge(panel.opened, panel.closed, accordionHideToggleChange, panel._inputChanges.pipe(filter(function (changes) { return !!(changes.hideToggle || changes.disabled); })))
            .subscribe(function () { return _this._changeDetectorRef.markForCheck(); });
        // Avoids focus being lost if the panel contained the focused element and was closed.
        panel.closed
            .pipe(filter(function () { return panel._containsFocus(); }))
            .subscribe(function () { return _focusMonitor.focusVia(_element, 'program'); });
        _focusMonitor.monitor(_element).subscribe(function (origin) {
            if (origin && panel.accordion) {
                panel.accordion._handleHeaderFocus(_this);
            }
        });
    }
    Object.defineProperty(MatExpansionPanelHeader.prototype, "disabled", {
        /**
         * Whether the associated panel is disabled. Implemented as a part of `FocusableOption`.
         * @docs-private
         */
        get: /**
         * Whether the associated panel is disabled. Implemented as a part of `FocusableOption`.
         * \@docs-private
         * @return {?}
         */
        function () {
            return this.panel.disabled;
        },
        enumerable: true,
        configurable: true
    });
    /** Toggles the expanded state of the panel. */
    /**
     * Toggles the expanded state of the panel.
     * @return {?}
     */
    MatExpansionPanelHeader.prototype._toggle = /**
     * Toggles the expanded state of the panel.
     * @return {?}
     */
    function () {
        this.panel.toggle();
    };
    /** Gets whether the panel is expanded. */
    /**
     * Gets whether the panel is expanded.
     * @return {?}
     */
    MatExpansionPanelHeader.prototype._isExpanded = /**
     * Gets whether the panel is expanded.
     * @return {?}
     */
    function () {
        return this.panel.expanded;
    };
    /** Gets the expanded state string of the panel. */
    /**
     * Gets the expanded state string of the panel.
     * @return {?}
     */
    MatExpansionPanelHeader.prototype._getExpandedState = /**
     * Gets the expanded state string of the panel.
     * @return {?}
     */
    function () {
        return this.panel._getExpandedState();
    };
    /** Gets the panel id. */
    /**
     * Gets the panel id.
     * @return {?}
     */
    MatExpansionPanelHeader.prototype._getPanelId = /**
     * Gets the panel id.
     * @return {?}
     */
    function () {
        return this.panel.id;
    };
    /** Gets whether the expand indicator should be shown. */
    /**
     * Gets whether the expand indicator should be shown.
     * @return {?}
     */
    MatExpansionPanelHeader.prototype._showToggle = /**
     * Gets whether the expand indicator should be shown.
     * @return {?}
     */
    function () {
        return !this.panel.hideToggle && !this.panel.disabled;
    };
    /** Handle keydown event calling to toggle() if appropriate. */
    /**
     * Handle keydown event calling to toggle() if appropriate.
     * @param {?} event
     * @return {?}
     */
    MatExpansionPanelHeader.prototype._keydown = /**
     * Handle keydown event calling to toggle() if appropriate.
     * @param {?} event
     * @return {?}
     */
    function (event) {
        switch (event.keyCode) {
            // Toggle for space and enter keys.
            case SPACE:
            case ENTER:
                if (!hasModifierKey(event)) {
                    event.preventDefault();
                    this._toggle();
                }
                break;
            default:
                if (this.panel.accordion) {
                    this.panel.accordion._handleHeaderKeydown(event);
                }
                return;
        }
    };
    /**
     * Focuses the panel header. Implemented as a part of `FocusableOption`.
     * @param origin Origin of the action that triggered the focus.
     * @docs-private
     */
    /**
     * Focuses the panel header. Implemented as a part of `FocusableOption`.
     * \@docs-private
     * @param {?=} origin Origin of the action that triggered the focus.
     * @return {?}
     */
    MatExpansionPanelHeader.prototype.focus = /**
     * Focuses the panel header. Implemented as a part of `FocusableOption`.
     * \@docs-private
     * @param {?=} origin Origin of the action that triggered the focus.
     * @return {?}
     */
    function (origin) {
        if (origin === void 0) { origin = 'program'; }
        this._focusMonitor.focusVia(this._element, origin);
    };
    /**
     * @return {?}
     */
    MatExpansionPanelHeader.prototype.ngOnDestroy = /**
     * @return {?}
     */
    function () {
        this._parentChangeSubscription.unsubscribe();
        this._focusMonitor.stopMonitoring(this._element);
    };
    MatExpansionPanelHeader.decorators = [
        { type: Component, args: [{selector: 'mat-expansion-panel-header',
                    styles: [".mat-expansion-panel-header{display:flex;flex-direction:row;align-items:center;padding:0 24px;border-radius:inherit}.mat-expansion-panel-header:focus,.mat-expansion-panel-header:hover{outline:0}.mat-expansion-panel-header.mat-expanded:focus,.mat-expansion-panel-header.mat-expanded:hover{background:inherit}.mat-expansion-panel-header:not([aria-disabled=true]){cursor:pointer}.mat-content{display:flex;flex:1;flex-direction:row;overflow:hidden}.mat-expansion-panel-header-description,.mat-expansion-panel-header-title{display:flex;flex-grow:1;margin-right:16px}[dir=rtl] .mat-expansion-panel-header-description,[dir=rtl] .mat-expansion-panel-header-title{margin-right:0;margin-left:16px}.mat-expansion-panel-header-description{flex-grow:2}.mat-expansion-indicator::after{border-style:solid;border-width:0 2px 2px 0;content:'';display:inline-block;padding:3px;transform:rotate(45deg);vertical-align:middle}"],
                    template: "<span class=\"mat-content\"><ng-content select=\"mat-panel-title\"></ng-content><ng-content select=\"mat-panel-description\"></ng-content><ng-content></ng-content></span><span [@indicatorRotate]=\"_getExpandedState()\" *ngIf=\"_showToggle()\" class=\"mat-expansion-indicator\"></span>",
                    encapsulation: ViewEncapsulation.None,
                    changeDetection: ChangeDetectionStrategy.OnPush,
                    animations: [
                        matExpansionAnimations.indicatorRotate,
                        matExpansionAnimations.expansionHeaderHeight
                    ],
                    host: {
                        'class': 'mat-expansion-panel-header',
                        'role': 'button',
                        '[attr.id]': 'panel._headerId',
                        '[attr.tabindex]': 'disabled ? -1 : 0',
                        '[attr.aria-controls]': '_getPanelId()',
                        '[attr.aria-expanded]': '_isExpanded()',
                        '[attr.aria-disabled]': 'panel.disabled',
                        '[class.mat-expanded]': '_isExpanded()',
                        '(click)': '_toggle()',
                        '(keydown)': '_keydown($event)',
                        '[@expansionHeight]': "{\n        value: _getExpandedState(),\n        params: {\n          collapsedHeight: collapsedHeight,\n          expandedHeight: expandedHeight\n        }\n    }",
                    },
                },] },
    ];
    /** @nocollapse */
    MatExpansionPanelHeader.ctorParameters = function () { return [
        { type: MatExpansionPanel, decorators: [{ type: Host }] },
        { type: ElementRef },
        { type: FocusMonitor },
        { type: ChangeDetectorRef }
    ]; };
    MatExpansionPanelHeader.propDecorators = {
        expandedHeight: [{ type: Input }],
        collapsedHeight: [{ type: Input }]
    };
    return MatExpansionPanelHeader;
}());
/**
 * `<mat-panel-description>`
 *
 * This directive is to be used inside of the MatExpansionPanelHeader component.
 */
var MatExpansionPanelDescription = /** @class */ (function () {
    function MatExpansionPanelDescription() {
    }
    MatExpansionPanelDescription.decorators = [
        { type: Directive, args: [{
                    selector: 'mat-panel-description',
                    host: {
                        class: 'mat-expansion-panel-header-description'
                    }
                },] },
    ];
    return MatExpansionPanelDescription;
}());
/**
 * `<mat-panel-title>`
 *
 * This directive is to be used inside of the MatExpansionPanelHeader component.
 */
var MatExpansionPanelTitle = /** @class */ (function () {
    function MatExpansionPanelTitle() {
    }
    MatExpansionPanelTitle.decorators = [
        { type: Directive, args: [{
                    selector: 'mat-panel-title',
                    host: {
                        class: 'mat-expansion-panel-header-title'
                    }
                },] },
    ];
    return MatExpansionPanelTitle;
}());

/**
 * @fileoverview added by tsickle
 * @suppress {checkTypes,extraRequire,missingReturn,unusedPrivateMembers,uselessCode} checked by tsc
 */
/**
 * Directive for a Material Design Accordion.
 */
var MatAccordion = /** @class */ (function (_super) {
    __extends(MatAccordion, _super);
    function MatAccordion() {
        var _this = _super !== null && _super.apply(this, arguments) || this;
        _this._hideToggle = false;
        /**
         * Display mode used for all expansion panels in the accordion. Currently two display
         * modes exist:
         *  default - a gutter-like spacing is placed around any expanded panel, placing the expanded
         *     panel at a different elevation from the rest of the accordion.
         *  flat - no spacing is placed around expanded panels, showing all panels at the same
         *     elevation.
         */
        _this.displayMode = 'default';
        return _this;
    }
    Object.defineProperty(MatAccordion.prototype, "hideToggle", {
        /** Whether the expansion indicator should be hidden. */
        get: /**
         * Whether the expansion indicator should be hidden.
         * @return {?}
         */
        function () { return this._hideToggle; },
        set: /**
         * @param {?} show
         * @return {?}
         */
        function (show) { this._hideToggle = coerceBooleanProperty(show); },
        enumerable: true,
        configurable: true
    });
    /**
     * @return {?}
     */
    MatAccordion.prototype.ngAfterContentInit = /**
     * @return {?}
     */
    function () {
        this._keyManager = new FocusKeyManager(this._headers).withWrap();
    };
    /** Handles keyboard events coming in from the panel headers. */
    /**
     * Handles keyboard events coming in from the panel headers.
     * @param {?} event
     * @return {?}
     */
    MatAccordion.prototype._handleHeaderKeydown = /**
     * Handles keyboard events coming in from the panel headers.
     * @param {?} event
     * @return {?}
     */
    function (event) {
        var keyCode = event.keyCode;
        /** @type {?} */
        var manager = this._keyManager;
        if (keyCode === HOME) {
            manager.setFirstItemActive();
            event.preventDefault();
        }
        else if (keyCode === END) {
            manager.setLastItemActive();
            event.preventDefault();
        }
        else {
            this._keyManager.onKeydown(event);
        }
    };
    /**
     * @param {?} header
     * @return {?}
     */
    MatAccordion.prototype._handleHeaderFocus = /**
     * @param {?} header
     * @return {?}
     */
    function (header) {
        this._keyManager.updateActiveItem(header);
    };
    MatAccordion.decorators = [
        { type: Directive, args: [{
                    selector: 'mat-accordion',
                    exportAs: 'matAccordion',
                    inputs: ['multi'],
                    providers: [{
                            provide: MAT_ACCORDION,
                            useExisting: MatAccordion
                        }],
                    host: {
                        class: 'mat-accordion'
                    }
                },] },
    ];
    MatAccordion.propDecorators = {
        _headers: [{ type: ContentChildren, args: [MatExpansionPanelHeader, { descendants: true },] }],
        hideToggle: [{ type: Input }],
        displayMode: [{ type: Input }]
    };
    return MatAccordion;
}(CdkAccordion));

/**
 * @fileoverview added by tsickle
 * @suppress {checkTypes,extraRequire,missingReturn,unusedPrivateMembers,uselessCode} checked by tsc
 */
var MatExpansionModule = /** @class */ (function () {
    function MatExpansionModule() {
    }
    MatExpansionModule.decorators = [
        { type: NgModule, args: [{
                    imports: [CommonModule, CdkAccordionModule, PortalModule],
                    exports: [
                        MatAccordion,
                        MatExpansionPanel,
                        MatExpansionPanelActionRow,
                        MatExpansionPanelHeader,
                        MatExpansionPanelTitle,
                        MatExpansionPanelDescription,
                        MatExpansionPanelContent,
                    ],
                    declarations: [
                        MatAccordion,
                        MatExpansionPanel,
                        MatExpansionPanelActionRow,
                        MatExpansionPanelHeader,
                        MatExpansionPanelTitle,
                        MatExpansionPanelDescription,
                        MatExpansionPanelContent,
                    ],
                },] },
    ];
    return MatExpansionModule;
}());

/**
 * @fileoverview added by tsickle
 * @suppress {checkTypes,extraRequire,missingReturn,unusedPrivateMembers,uselessCode} checked by tsc
 */

/**
 * @fileoverview added by tsickle
 * @suppress {checkTypes,extraRequire,missingReturn,unusedPrivateMembers,uselessCode} checked by tsc
 */

export { MatExpansionModule, MatAccordion, MAT_ACCORDION, MatExpansionPanel, MatExpansionPanelActionRow, MatExpansionPanelHeader, MatExpansionPanelDescription, MatExpansionPanelTitle, MatExpansionPanelContent, EXPANSION_PANEL_ANIMATION_TIMING, matExpansionAnimations };
//# sourceMappingURL=expansion.es5.js.map
