RiffMaster_WPFaT2023_Project/Frontend/RiffMasterFront/node_modules/@material/menu-surface/foundation.js

/**
 * @license
 * Copyright 2018 Google Inc.
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 */
import { __assign, __extends, __values } from "tslib";
import { MDCFoundation } from '@material/base/foundation';
import { Corner, CornerBit, cssClasses, numbers, strings } from './constants';
/** MDC Menu Surface Foundation */
var MDCMenuSurfaceFoundation = /** @class */ (function (_super) {
    __extends(MDCMenuSurfaceFoundation, _super);
    function MDCMenuSurfaceFoundation(adapter) {
        var _this = _super.call(this, __assign(__assign({}, MDCMenuSurfaceFoundation.defaultAdapter), adapter)) || this;
        _this.isSurfaceOpen = false;
        _this.isQuickOpen = false;
        _this.isHoistedElement = false;
        _this.isFixedPosition = false;
        _this.isHorizontallyCenteredOnViewport = false;
        _this.maxHeight = 0;
        _this.openBottomBias = 0;
        _this.openAnimationEndTimerId = 0;
        _this.closeAnimationEndTimerId = 0;
        _this.animationRequestId = 0;
        _this.anchorCorner = Corner.TOP_START;
        /**
         * Corner of the menu surface to which menu surface is attached to anchor.
         *
         *  Anchor corner --->+----------+
         *                    |  ANCHOR  |
         *                    +----------+
         *  Origin corner --->+--------------+
         *                    |              |
         *                    |              |
         *                    | MENU SURFACE |
         *                    |              |
         *                    |              |
         *                    +--------------+
         */
        _this.originCorner = Corner.TOP_START;
        _this.anchorMargin = { top: 0, right: 0, bottom: 0, left: 0 };
        _this.position = { x: 0, y: 0 };
        return _this;
    }
    Object.defineProperty(MDCMenuSurfaceFoundation, "cssClasses", {
        get: function () {
            return cssClasses;
        },
        enumerable: false,
        configurable: true
    });
    Object.defineProperty(MDCMenuSurfaceFoundation, "strings", {
        get: function () {
            return strings;
        },
        enumerable: false,
        configurable: true
    });
    Object.defineProperty(MDCMenuSurfaceFoundation, "numbers", {
        get: function () {
            return numbers;
        },
        enumerable: false,
        configurable: true
    });
    Object.defineProperty(MDCMenuSurfaceFoundation, "Corner", {
        get: function () {
            return Corner;
        },
        enumerable: false,
        configurable: true
    });
    Object.defineProperty(MDCMenuSurfaceFoundation, "defaultAdapter", {
        /**
         * @see {@link MDCMenuSurfaceAdapter} for typing information on parameters and return types.
         */
        get: function () {
            // tslint:disable:object-literal-sort-keys Methods should be in the same order as the adapter interface.
            return {
                addClass: function () { return undefined; },
                removeClass: function () { return undefined; },
                hasClass: function () { return false; },
                hasAnchor: function () { return false; },
                isElementInContainer: function () { return false; },
                isFocused: function () { return false; },
                isRtl: function () { return false; },
                getInnerDimensions: function () { return ({ height: 0, width: 0 }); },
                getAnchorDimensions: function () { return null; },
                getViewportDimensions: function () { return ({ height: 0, width: 0 }); },
                getBodyDimensions: function () { return ({ height: 0, width: 0 }); },
                getWindowScroll: function () { return ({ x: 0, y: 0 }); },
                setPosition: function () { return undefined; },
                setMaxHeight: function () { return undefined; },
                setTransformOrigin: function () { return undefined; },
                saveFocus: function () { return undefined; },
                restoreFocus: function () { return undefined; },
                notifyClose: function () { return undefined; },
                notifyClosing: function () { return undefined; },
                notifyOpen: function () { return undefined; },
                notifyOpening: function () { return undefined; },
                registerWindowEventHandler: function () { return undefined; },
                deregisterWindowEventHandler: function () { return undefined; },
            };
            // tslint:enable:object-literal-sort-keys
        },
        enumerable: false,
        configurable: true
    });
    MDCMenuSurfaceFoundation.prototype.init = function () {
        var _a = MDCMenuSurfaceFoundation.cssClasses, ROOT = _a.ROOT, OPEN = _a.OPEN;
        if (!this.adapter.hasClass(ROOT)) {
            throw new Error(ROOT + " class required in root element.");
        }
        if (this.adapter.hasClass(OPEN)) {
            this.isSurfaceOpen = true;
        }
        this.resizeListener = this.handleResize.bind(this);
        this.adapter.registerWindowEventHandler('resize', this.resizeListener);
    };
    MDCMenuSurfaceFoundation.prototype.destroy = function () {
        clearTimeout(this.openAnimationEndTimerId);
        clearTimeout(this.closeAnimationEndTimerId);
        // Cancel any currently running animations.
        cancelAnimationFrame(this.animationRequestId);
        this.adapter.deregisterWindowEventHandler('resize', this.resizeListener);
    };
    /**
     * @param corner Default anchor corner alignment of top-left menu surface
     *     corner.
     */
    MDCMenuSurfaceFoundation.prototype.setAnchorCorner = function (corner) {
        this.anchorCorner = corner;
    };
    /**
     * Flip menu corner horizontally.
     */
    MDCMenuSurfaceFoundation.prototype.flipCornerHorizontally = function () {
        this.originCorner = this.originCorner ^ CornerBit.RIGHT;
    };
    /**
     * @param margin Set of margin values from anchor.
     */
    MDCMenuSurfaceFoundation.prototype.setAnchorMargin = function (margin) {
        this.anchorMargin.top = margin.top || 0;
        this.anchorMargin.right = margin.right || 0;
        this.anchorMargin.bottom = margin.bottom || 0;
        this.anchorMargin.left = margin.left || 0;
    };
    /** Used to indicate if the menu-surface is hoisted to the body. */
    MDCMenuSurfaceFoundation.prototype.setIsHoisted = function (isHoisted) {
        this.isHoistedElement = isHoisted;
    };
    /**
     * Used to set the menu-surface calculations based on a fixed position menu.
     */
    MDCMenuSurfaceFoundation.prototype.setFixedPosition = function (isFixedPosition) {
        this.isFixedPosition = isFixedPosition;
    };
    /**
     * @return Returns true if menu is in fixed (`position: fixed`) position.
     */
    MDCMenuSurfaceFoundation.prototype.isFixed = function () {
        return this.isFixedPosition;
    };
    /** Sets the menu-surface position on the page. */
    MDCMenuSurfaceFoundation.prototype.setAbsolutePosition = function (x, y) {
        this.position.x = this.isFinite(x) ? x : 0;
        this.position.y = this.isFinite(y) ? y : 0;
    };
    /** Sets whether menu-surface should be horizontally centered to viewport. */
    MDCMenuSurfaceFoundation.prototype.setIsHorizontallyCenteredOnViewport = function (isCentered) {
        this.isHorizontallyCenteredOnViewport = isCentered;
    };
    MDCMenuSurfaceFoundation.prototype.setQuickOpen = function (quickOpen) {
        this.isQuickOpen = quickOpen;
    };
    /**
     * Sets maximum menu-surface height on open.
     * @param maxHeight The desired max-height. Set to 0 (default) to
     *     automatically calculate max height based on available viewport space.
     */
    MDCMenuSurfaceFoundation.prototype.setMaxHeight = function (maxHeight) {
        this.maxHeight = maxHeight;
    };
    /**
     * Set to a positive integer to influence the menu to preferentially open
     * below the anchor instead of above.
     * @param bias A value of `x` simulates an extra `x` pixels of available space
     *     below the menu during positioning calculations.
     */
    MDCMenuSurfaceFoundation.prototype.setOpenBottomBias = function (bias) {
        this.openBottomBias = bias;
    };
    MDCMenuSurfaceFoundation.prototype.isOpen = function () {
        return this.isSurfaceOpen;
    };
    /**
     * Open the menu surface.
     */
    MDCMenuSurfaceFoundation.prototype.open = function () {
        var _this = this;
        if (this.isSurfaceOpen) {
            return;
        }
        this.adapter.notifyOpening();
        this.adapter.saveFocus();
        if (this.isQuickOpen) {
            this.isSurfaceOpen = true;
            this.adapter.addClass(MDCMenuSurfaceFoundation.cssClasses.OPEN);
            this.dimensions = this.adapter.getInnerDimensions();
            this.autoposition();
            this.adapter.notifyOpen();
        }
        else {
            this.adapter.addClass(MDCMenuSurfaceFoundation.cssClasses.ANIMATING_OPEN);
            this.animationRequestId = requestAnimationFrame(function () {
                _this.dimensions = _this.adapter.getInnerDimensions();
                _this.autoposition();
                _this.adapter.addClass(MDCMenuSurfaceFoundation.cssClasses.OPEN);
                _this.openAnimationEndTimerId = setTimeout(function () {
                    _this.openAnimationEndTimerId = 0;
                    _this.adapter.removeClass(MDCMenuSurfaceFoundation.cssClasses.ANIMATING_OPEN);
                    _this.adapter.notifyOpen();
                }, numbers.TRANSITION_OPEN_DURATION);
            });
            this.isSurfaceOpen = true;
        }
        this.adapter.registerWindowEventHandler('resize', this.resizeListener);
    };
    /**
     * Closes the menu surface.
     */
    MDCMenuSurfaceFoundation.prototype.close = function (skipRestoreFocus) {
        var _this = this;
        if (skipRestoreFocus === void 0) { skipRestoreFocus = false; }
        if (!this.isSurfaceOpen) {
            return;
        }
        this.adapter.notifyClosing();
        this.adapter.deregisterWindowEventHandler('resize', this.resizeListener);
        if (this.isQuickOpen) {
            this.isSurfaceOpen = false;
            if (!skipRestoreFocus) {
                this.maybeRestoreFocus();
            }
            this.adapter.removeClass(MDCMenuSurfaceFoundation.cssClasses.OPEN);
            this.adapter.removeClass(MDCMenuSurfaceFoundation.cssClasses.IS_OPEN_BELOW);
            this.adapter.notifyClose();
            return;
        }
        this.adapter.addClass(MDCMenuSurfaceFoundation.cssClasses.ANIMATING_CLOSED);
        requestAnimationFrame(function () {
            _this.adapter.removeClass(MDCMenuSurfaceFoundation.cssClasses.OPEN);
            _this.adapter.removeClass(MDCMenuSurfaceFoundation.cssClasses.IS_OPEN_BELOW);
            _this.closeAnimationEndTimerId = setTimeout(function () {
                _this.closeAnimationEndTimerId = 0;
                _this.adapter.removeClass(MDCMenuSurfaceFoundation.cssClasses.ANIMATING_CLOSED);
                _this.adapter.notifyClose();
            }, numbers.TRANSITION_CLOSE_DURATION);
        });
        this.isSurfaceOpen = false;
        if (!skipRestoreFocus) {
            this.maybeRestoreFocus();
        }
    };
    /** Handle clicks and close if not within menu-surface element. */
    MDCMenuSurfaceFoundation.prototype.handleBodyClick = function (evt) {
        var el = evt.target;
        if (this.adapter.isElementInContainer(el)) {
            return;
        }
        this.close();
    };
    /** Handle keys that close the surface. */
    MDCMenuSurfaceFoundation.prototype.handleKeydown = function (evt) {
        var keyCode = evt.keyCode, key = evt.key;
        var isEscape = key === 'Escape' || keyCode === 27;
        if (isEscape) {
            this.close();
        }
    };
    /** Handles resize events on the window. */
    MDCMenuSurfaceFoundation.prototype.handleResize = function () {
        this.dimensions = this.adapter.getInnerDimensions();
        this.autoposition();
    };
    MDCMenuSurfaceFoundation.prototype.autoposition = function () {
        var _a;
        // Compute measurements for autoposition methods reuse.
        this.measurements = this.getAutoLayoutmeasurements();
        var corner = this.getoriginCorner();
        var maxMenuSurfaceHeight = this.getMenuSurfaceMaxHeight(corner);
        var verticalAlignment = this.hasBit(corner, CornerBit.BOTTOM) ? 'bottom' : 'top';
        var horizontalAlignment = this.hasBit(corner, CornerBit.RIGHT) ? 'right' : 'left';
        var horizontalOffset = this.getHorizontalOriginOffset(corner);
        var verticalOffset = this.getVerticalOriginOffset(corner);
        var _b = this.measurements, anchorSize = _b.anchorSize, surfaceSize = _b.surfaceSize;
        var position = (_a = {},
            _a[horizontalAlignment] = horizontalOffset,
            _a[verticalAlignment] = verticalOffset,
            _a);
        // Center align when anchor width is comparable or greater than menu
        // surface, otherwise keep corner.
        if (anchorSize.width / surfaceSize.width >
            numbers.ANCHOR_TO_MENU_SURFACE_WIDTH_RATIO) {
            horizontalAlignment = 'center';
        }
        // If the menu-surface has been hoisted to the body, it's no longer relative
        // to the anchor element
        if (this.isHoistedElement || this.isFixedPosition) {
            this.adjustPositionForHoistedElement(position);
        }
        this.adapter.setTransformOrigin(horizontalAlignment + " " + verticalAlignment);
        this.adapter.setPosition(position);
        this.adapter.setMaxHeight(maxMenuSurfaceHeight ? maxMenuSurfaceHeight + 'px' : '');
        // If it is opened from the top then add is-open-below class
        if (!this.hasBit(corner, CornerBit.BOTTOM)) {
            this.adapter.addClass(MDCMenuSurfaceFoundation.cssClasses.IS_OPEN_BELOW);
        }
    };
    /**
     * @return Measurements used to position menu surface popup.
     */
    MDCMenuSurfaceFoundation.prototype.getAutoLayoutmeasurements = function () {
        var anchorRect = this.adapter.getAnchorDimensions();
        var bodySize = this.adapter.getBodyDimensions();
        var viewportSize = this.adapter.getViewportDimensions();
        var windowScroll = this.adapter.getWindowScroll();
        if (!anchorRect) {
            // tslint:disable:object-literal-sort-keys Positional properties are more readable when they're grouped together
            anchorRect = {
                top: this.position.y,
                right: this.position.x,
                bottom: this.position.y,
                left: this.position.x,
                width: 0,
                height: 0,
            };
            // tslint:enable:object-literal-sort-keys
        }
        return {
            anchorSize: anchorRect,
            bodySize: bodySize,
            surfaceSize: this.dimensions,
            viewportDistance: {
                // tslint:disable:object-literal-sort-keys Positional properties are more readable when they're grouped together
                top: anchorRect.top,
                right: viewportSize.width - anchorRect.right,
                bottom: viewportSize.height - anchorRect.bottom,
                left: anchorRect.left,
                // tslint:enable:object-literal-sort-keys
            },
            viewportSize: viewportSize,
            windowScroll: windowScroll,
        };
    };
    /**
     * Computes the corner of the anchor from which to animate and position the
     * menu surface.
     *
     * Only LEFT or RIGHT bit is used to position the menu surface ignoring RTL
     * context. E.g., menu surface will be positioned from right side on TOP_END.
     */
    MDCMenuSurfaceFoundation.prototype.getoriginCorner = function () {
        var corner = this.originCorner;
        var _a = this.measurements, viewportDistance = _a.viewportDistance, anchorSize = _a.anchorSize, surfaceSize = _a.surfaceSize;
        var MARGIN_TO_EDGE = MDCMenuSurfaceFoundation.numbers.MARGIN_TO_EDGE;
        var isAnchoredToBottom = this.hasBit(this.anchorCorner, CornerBit.BOTTOM);
        var availableTop;
        var availableBottom;
        if (isAnchoredToBottom) {
            availableTop =
                viewportDistance.top - MARGIN_TO_EDGE + this.anchorMargin.bottom;
            availableBottom =
                viewportDistance.bottom - MARGIN_TO_EDGE - this.anchorMargin.bottom;
        }
        else {
            availableTop =
                viewportDistance.top - MARGIN_TO_EDGE + this.anchorMargin.top;
            availableBottom = viewportDistance.bottom - MARGIN_TO_EDGE +
                anchorSize.height - this.anchorMargin.top;
        }
        var isAvailableBottom = availableBottom - surfaceSize.height > 0;
        if (!isAvailableBottom &&
            availableTop > availableBottom + this.openBottomBias) {
            // Attach bottom side of surface to the anchor.
            corner = this.setBit(corner, CornerBit.BOTTOM);
        }
        var isRtl = this.adapter.isRtl();
        var isFlipRtl = this.hasBit(this.anchorCorner, CornerBit.FLIP_RTL);
        var hasRightBit = this.hasBit(this.anchorCorner, CornerBit.RIGHT) ||
            this.hasBit(corner, CornerBit.RIGHT);
        // Whether surface attached to right side of anchor element.
        var isAnchoredToRight = false;
        // Anchored to start
        if (isRtl && isFlipRtl) {
            isAnchoredToRight = !hasRightBit;
        }
        else {
            // Anchored to right
            isAnchoredToRight = hasRightBit;
        }
        var availableLeft;
        var availableRight;
        if (isAnchoredToRight) {
            availableLeft =
                viewportDistance.left + anchorSize.width + this.anchorMargin.left;
            availableRight = viewportDistance.right - this.anchorMargin.left;
        }
        else {
            availableLeft = viewportDistance.left + this.anchorMargin.left;
            availableRight =
                viewportDistance.right + anchorSize.width - this.anchorMargin.left;
        }
        var isAvailableLeft = availableLeft - surfaceSize.width > 0;
        var isAvailableRight = availableRight - surfaceSize.width > 0;
        var isOriginCornerAlignedToEnd = this.hasBit(corner, CornerBit.FLIP_RTL) &&
            this.hasBit(corner, CornerBit.RIGHT);
        if (isAvailableRight && isOriginCornerAlignedToEnd && isRtl ||
            !isAvailableLeft && isOriginCornerAlignedToEnd) {
            // Attach left side of surface to the anchor.
            corner = this.unsetBit(corner, CornerBit.RIGHT);
        }
        else if (isAvailableLeft && isAnchoredToRight && isRtl ||
            (isAvailableLeft && !isAnchoredToRight && hasRightBit) ||
            (!isAvailableRight && availableLeft >= availableRight)) {
            // Attach right side of surface to the anchor.
            corner = this.setBit(corner, CornerBit.RIGHT);
        }
        return corner;
    };
    /**
     * @param corner Origin corner of the menu surface.
     * @return Maximum height of the menu surface, based on available space. 0
     *     indicates should not be set.
     */
    MDCMenuSurfaceFoundation.prototype.getMenuSurfaceMaxHeight = function (corner) {
        if (this.maxHeight > 0) {
            return this.maxHeight;
        }
        var viewportDistance = this.measurements.viewportDistance;
        var maxHeight = 0;
        var isBottomAligned = this.hasBit(corner, CornerBit.BOTTOM);
        var isBottomAnchored = this.hasBit(this.anchorCorner, CornerBit.BOTTOM);
        var MARGIN_TO_EDGE = MDCMenuSurfaceFoundation.numbers.MARGIN_TO_EDGE;
        // When maximum height is not specified, it is handled from CSS.
        if (isBottomAligned) {
            maxHeight = viewportDistance.top + this.anchorMargin.top - MARGIN_TO_EDGE;
            if (!isBottomAnchored) {
                maxHeight += this.measurements.anchorSize.height;
            }
        }
        else {
            maxHeight = viewportDistance.bottom - this.anchorMargin.bottom +
                this.measurements.anchorSize.height - MARGIN_TO_EDGE;
            if (isBottomAnchored) {
                maxHeight -= this.measurements.anchorSize.height;
            }
        }
        return maxHeight;
    };
    /**
     * @param corner Origin corner of the menu surface.
     * @return Horizontal offset of menu surface origin corner from corresponding
     *     anchor corner.
     */
    MDCMenuSurfaceFoundation.prototype.getHorizontalOriginOffset = function (corner) {
        var anchorSize = this.measurements.anchorSize;
        // isRightAligned corresponds to using the 'right' property on the surface.
        var isRightAligned = this.hasBit(corner, CornerBit.RIGHT);
        var avoidHorizontalOverlap = this.hasBit(this.anchorCorner, CornerBit.RIGHT);
        if (isRightAligned) {
            var rightOffset = avoidHorizontalOverlap ?
                anchorSize.width - this.anchorMargin.left :
                this.anchorMargin.right;
            // For hoisted or fixed elements, adjust the offset by the difference
            // between viewport width and body width so when we calculate the right
            // value (`adjustPositionForHoistedElement`) based on the element
            // position, the right property is correct.
            if (this.isHoistedElement || this.isFixedPosition) {
                return rightOffset -
                    (this.measurements.viewportSize.width -
                        this.measurements.bodySize.width);
            }
            return rightOffset;
        }
        return avoidHorizontalOverlap ? anchorSize.width - this.anchorMargin.right :
            this.anchorMargin.left;
    };
    /**
     * @param corner Origin corner of the menu surface.
     * @return Vertical offset of menu surface origin corner from corresponding
     *     anchor corner.
     */
    MDCMenuSurfaceFoundation.prototype.getVerticalOriginOffset = function (corner) {
        var anchorSize = this.measurements.anchorSize;
        var isBottomAligned = this.hasBit(corner, CornerBit.BOTTOM);
        var avoidVerticalOverlap = this.hasBit(this.anchorCorner, CornerBit.BOTTOM);
        var y = 0;
        if (isBottomAligned) {
            y = avoidVerticalOverlap ? anchorSize.height - this.anchorMargin.top :
                -this.anchorMargin.bottom;
        }
        else {
            y = avoidVerticalOverlap ?
                (anchorSize.height + this.anchorMargin.bottom) :
                this.anchorMargin.top;
        }
        return y;
    };
    /**
     * Calculates the offsets for positioning the menu-surface when the
     * menu-surface has been hoisted to the body.
     */
    MDCMenuSurfaceFoundation.prototype.adjustPositionForHoistedElement = function (position) {
        var e_1, _a;
        var _b = this.measurements, windowScroll = _b.windowScroll, viewportDistance = _b.viewportDistance, surfaceSize = _b.surfaceSize, viewportSize = _b.viewportSize;
        var props = Object.keys(position);
        try {
            for (var props_1 = __values(props), props_1_1 = props_1.next(); !props_1_1.done; props_1_1 = props_1.next()) {
                var prop = props_1_1.value;
                var value = position[prop] || 0;
                if (this.isHorizontallyCenteredOnViewport &&
                    (prop === 'left' || prop === 'right')) {
                    position[prop] = (viewportSize.width - surfaceSize.width) / 2;
                    continue;
                }
                // Hoisted surfaces need to have the anchor elements location on the page
                // added to the position properties for proper alignment on the body.
                value += viewportDistance[prop];
                // Surfaces that are absolutely positioned need to have additional
                // calculations for scroll and bottom positioning.
                if (!this.isFixedPosition) {
                    if (prop === 'top') {
                        value += windowScroll.y;
                    }
                    else if (prop === 'bottom') {
                        value -= windowScroll.y;
                    }
                    else if (prop === 'left') {
                        value += windowScroll.x;
                    }
                    else { // prop === 'right'
                        value -= windowScroll.x;
                    }
                }
                position[prop] = value;
            }
        }
        catch (e_1_1) { e_1 = { error: e_1_1 }; }
        finally {
            try {
                if (props_1_1 && !props_1_1.done && (_a = props_1.return)) _a.call(props_1);
            }
            finally { if (e_1) throw e_1.error; }
        }
    };
    /**
     * The last focused element when the menu surface was opened should regain
     * focus, if the user is focused on or within the menu surface when it is
     * closed.
     */
    MDCMenuSurfaceFoundation.prototype.maybeRestoreFocus = function () {
        var _this = this;
        var isRootFocused = this.adapter.isFocused();
        var ownerDocument = this.adapter.getOwnerDocument ?
            this.adapter.getOwnerDocument() :
            document;
        var childHasFocus = ownerDocument.activeElement &&
            this.adapter.isElementInContainer(ownerDocument.activeElement);
        if (isRootFocused || childHasFocus) {
            // Wait before restoring focus when closing the menu surface. This is
            // important because if a touch event triggered the menu close, and the
            // subsequent mouse event occurs after focus is restored, then the
            // restored focus would be lost.
            setTimeout(function () {
                _this.adapter.restoreFocus();
            }, numbers.TOUCH_EVENT_WAIT_MS);
        }
    };
    MDCMenuSurfaceFoundation.prototype.hasBit = function (corner, bit) {
        return Boolean(corner & bit); // tslint:disable-line:no-bitwise
    };
    MDCMenuSurfaceFoundation.prototype.setBit = function (corner, bit) {
        return corner | bit; // tslint:disable-line:no-bitwise
    };
    MDCMenuSurfaceFoundation.prototype.unsetBit = function (corner, bit) {
        return corner ^ bit;
    };
    /**
     * isFinite that doesn't force conversion to number type.
     * Equivalent to Number.isFinite in ES2015, which is not supported in IE.
     */
    MDCMenuSurfaceFoundation.prototype.isFinite = function (num) {
        return typeof num === 'number' && isFinite(num);
    };
    return MDCMenuSurfaceFoundation;
}(MDCFoundation));
export { MDCMenuSurfaceFoundation };
// tslint:disable-next-line:no-default-export Needed for backward compatibility with MDC Web v0.44.0 and earlier.
export default MDCMenuSurfaceFoundation;
//# sourceMappingURL=foundation.js.map