Merge remote-tracking branch 'upstream/dev' into dev

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diff --git a/library/fullcalendar/packages/interaction/main.js b/library/fullcalendar/packages/interaction/main.js
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+/*!
+FullCalendar Interaction Plugin v4.0.2
+Docs & License: https://fullcalendar.io/
+(c) 2019 Adam Shaw
+*/
+(function (global, factory) {
+    typeof exports === 'object' && typeof module !== 'undefined' ? factory(exports, require('@fullcalendar/core')) :
+    typeof define === 'function' && define.amd ? define(['exports', '@fullcalendar/core'], factory) :
+    (global = global || self, factory(global.FullCalendarInteraction = {}, global.FullCalendar));
+}(this, function (exports, core) { 'use strict';
+
+    /*! *****************************************************************************

+    Copyright (c) Microsoft Corporation. All rights reserved.

+    Licensed under the Apache License, Version 2.0 (the "License"); you may not use

+    this file except in compliance with the License. You may obtain a copy of the

+    License at http://www.apache.org/licenses/LICENSE-2.0

+

+    THIS CODE IS PROVIDED ON AN *AS IS* BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY

+    KIND, EITHER EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION ANY IMPLIED

+    WARRANTIES OR CONDITIONS OF TITLE, FITNESS FOR A PARTICULAR PURPOSE,

+    MERCHANTABLITY OR NON-INFRINGEMENT.

+

+    See the Apache Version 2.0 License for specific language governing permissions

+    and limitations under the License.

+    ***************************************************************************** */

+    /* global Reflect, Promise */

+

+    var extendStatics = function(d, b) {

+        extendStatics = Object.setPrototypeOf ||

+            ({ __proto__: [] } instanceof Array && function (d, b) { d.__proto__ = b; }) ||

+            function (d, b) { for (var p in b) if (b.hasOwnProperty(p)) d[p] = b[p]; };

+        return extendStatics(d, b);

+    };

+

+    function __extends(d, b) {

+        extendStatics(d, b);

+        function __() { this.constructor = d; }

+        d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __());

+    }

+

+    var __assign = function() {

+        __assign = Object.assign || function __assign(t) {

+            for (var s, i = 1, n = arguments.length; i < n; i++) {

+                s = arguments[i];

+                for (var p in s) if (Object.prototype.hasOwnProperty.call(s, p)) t[p] = s[p];

+            }

+            return t;

+        };

+        return __assign.apply(this, arguments);

+    };
+
+    core.config.touchMouseIgnoreWait = 500;
+    var ignoreMouseDepth = 0;
+    var listenerCnt = 0;
+    var isWindowTouchMoveCancelled = false;
+    /*
+    Uses a "pointer" abstraction, which monitors UI events for both mouse and touch.
+    Tracks when the pointer "drags" on a certain element, meaning down+move+up.
+
+    Also, tracks if there was touch-scrolling.
+    Also, can prevent touch-scrolling from happening.
+    Also, can fire pointermove events when scrolling happens underneath, even when no real pointer movement.
+
+    emits:
+    - pointerdown
+    - pointermove
+    - pointerup
+    */
+    var PointerDragging = /** @class */ (function () {
+        function PointerDragging(containerEl) {
+            var _this = this;
+            this.subjectEl = null;
+            this.downEl = null;
+            // options that can be directly assigned by caller
+            this.selector = ''; // will cause subjectEl in all emitted events to be this element
+            this.handleSelector = '';
+            this.shouldIgnoreMove = false;
+            this.shouldWatchScroll = true; // for simulating pointermove on scroll
+            // internal states
+            this.isDragging = false;
+            this.isTouchDragging = false;
+            this.wasTouchScroll = false;
+            // Mouse
+            // ----------------------------------------------------------------------------------------------------
+            this.handleMouseDown = function (ev) {
+                if (!_this.shouldIgnoreMouse() &&
+                    isPrimaryMouseButton(ev) &&
+                    _this.tryStart(ev)) {
+                    var pev = _this.createEventFromMouse(ev, true);
+                    _this.emitter.trigger('pointerdown', pev);
+                    _this.initScrollWatch(pev);
+                    if (!_this.shouldIgnoreMove) {
+                        document.addEventListener('mousemove', _this.handleMouseMove);
+                    }
+                    document.addEventListener('mouseup', _this.handleMouseUp);
+                }
+            };
+            this.handleMouseMove = function (ev) {
+                var pev = _this.createEventFromMouse(ev);
+                _this.recordCoords(pev);
+                _this.emitter.trigger('pointermove', pev);
+            };
+            this.handleMouseUp = function (ev) {
+                document.removeEventListener('mousemove', _this.handleMouseMove);
+                document.removeEventListener('mouseup', _this.handleMouseUp);
+                _this.emitter.trigger('pointerup', _this.createEventFromMouse(ev));
+                _this.cleanup(); // call last so that pointerup has access to props
+            };
+            // Touch
+            // ----------------------------------------------------------------------------------------------------
+            this.handleTouchStart = function (ev) {
+                if (_this.tryStart(ev)) {
+                    _this.isTouchDragging = true;
+                    var pev = _this.createEventFromTouch(ev, true);
+                    _this.emitter.trigger('pointerdown', pev);
+                    _this.initScrollWatch(pev);
+                    // unlike mouse, need to attach to target, not document
+                    // https://stackoverflow.com/a/45760014
+                    var target = ev.target;
+                    if (!_this.shouldIgnoreMove) {
+                        target.addEventListener('touchmove', _this.handleTouchMove);
+                    }
+                    target.addEventListener('touchend', _this.handleTouchEnd);
+                    target.addEventListener('touchcancel', _this.handleTouchEnd); // treat it as a touch end
+                    // attach a handler to get called when ANY scroll action happens on the page.
+                    // this was impossible to do with normal on/off because 'scroll' doesn't bubble.
+                    // http://stackoverflow.com/a/32954565/96342
+                    window.addEventListener('scroll', _this.handleTouchScroll, true // useCapture
+                    );
+                }
+            };
+            this.handleTouchMove = function (ev) {
+                var pev = _this.createEventFromTouch(ev);
+                _this.recordCoords(pev);
+                _this.emitter.trigger('pointermove', pev);
+            };
+            this.handleTouchEnd = function (ev) {
+                if (_this.isDragging) { // done to guard against touchend followed by touchcancel
+                    var target = ev.target;
+                    target.removeEventListener('touchmove', _this.handleTouchMove);
+                    target.removeEventListener('touchend', _this.handleTouchEnd);
+                    target.removeEventListener('touchcancel', _this.handleTouchEnd);
+                    window.removeEventListener('scroll', _this.handleTouchScroll, true); // useCaptured=true
+                    _this.emitter.trigger('pointerup', _this.createEventFromTouch(ev));
+                    _this.cleanup(); // call last so that pointerup has access to props
+                    _this.isTouchDragging = false;
+                    startIgnoringMouse();
+                }
+            };
+            this.handleTouchScroll = function () {
+                _this.wasTouchScroll = true;
+            };
+            this.handleScroll = function (ev) {
+                if (!_this.shouldIgnoreMove) {
+                    var pageX = (window.pageXOffset - _this.prevScrollX) + _this.prevPageX;
+                    var pageY = (window.pageYOffset - _this.prevScrollY) + _this.prevPageY;
+                    _this.emitter.trigger('pointermove', {
+                        origEvent: ev,
+                        isTouch: _this.isTouchDragging,
+                        subjectEl: _this.subjectEl,
+                        pageX: pageX,
+                        pageY: pageY,
+                        deltaX: pageX - _this.origPageX,
+                        deltaY: pageY - _this.origPageY
+                    });
+                }
+            };
+            this.containerEl = containerEl;
+            this.emitter = new core.EmitterMixin();
+            containerEl.addEventListener('mousedown', this.handleMouseDown);
+            containerEl.addEventListener('touchstart', this.handleTouchStart, { passive: true });
+            listenerCreated();
+        }
+        PointerDragging.prototype.destroy = function () {
+            this.containerEl.removeEventListener('mousedown', this.handleMouseDown);
+            this.containerEl.removeEventListener('touchstart', this.handleTouchStart, { passive: true });
+            listenerDestroyed();
+        };
+        PointerDragging.prototype.tryStart = function (ev) {
+            var subjectEl = this.querySubjectEl(ev);
+            var downEl = ev.target;
+            if (subjectEl &&
+                (!this.handleSelector || core.elementClosest(downEl, this.handleSelector))) {
+                this.subjectEl = subjectEl;
+                this.downEl = downEl;
+                this.isDragging = true; // do this first so cancelTouchScroll will work
+                this.wasTouchScroll = false;
+                return true;
+            }
+            return false;
+        };
+        PointerDragging.prototype.cleanup = function () {
+            isWindowTouchMoveCancelled = false;
+            this.isDragging = false;
+            this.subjectEl = null;
+            this.downEl = null;
+            // keep wasTouchScroll around for later access
+            this.destroyScrollWatch();
+        };
+        PointerDragging.prototype.querySubjectEl = function (ev) {
+            if (this.selector) {
+                return core.elementClosest(ev.target, this.selector);
+            }
+            else {
+                return this.containerEl;
+            }
+        };
+        PointerDragging.prototype.shouldIgnoreMouse = function () {
+            return ignoreMouseDepth || this.isTouchDragging;
+        };
+        // can be called by user of this class, to cancel touch-based scrolling for the current drag
+        PointerDragging.prototype.cancelTouchScroll = function () {
+            if (this.isDragging) {
+                isWindowTouchMoveCancelled = true;
+            }
+        };
+        // Scrolling that simulates pointermoves
+        // ----------------------------------------------------------------------------------------------------
+        PointerDragging.prototype.initScrollWatch = function (ev) {
+            if (this.shouldWatchScroll) {
+                this.recordCoords(ev);
+                window.addEventListener('scroll', this.handleScroll, true); // useCapture=true
+            }
+        };
+        PointerDragging.prototype.recordCoords = function (ev) {
+            if (this.shouldWatchScroll) {
+                this.prevPageX = ev.pageX;
+                this.prevPageY = ev.pageY;
+                this.prevScrollX = window.pageXOffset;
+                this.prevScrollY = window.pageYOffset;
+            }
+        };
+        PointerDragging.prototype.destroyScrollWatch = function () {
+            if (this.shouldWatchScroll) {
+                window.removeEventListener('scroll', this.handleScroll, true); // useCaptured=true
+            }
+        };
+        // Event Normalization
+        // ----------------------------------------------------------------------------------------------------
+        PointerDragging.prototype.createEventFromMouse = function (ev, isFirst) {
+            var deltaX = 0;
+            var deltaY = 0;
+            // TODO: repeat code
+            if (isFirst) {
+                this.origPageX = ev.pageX;
+                this.origPageY = ev.pageY;
+            }
+            else {
+                deltaX = ev.pageX - this.origPageX;
+                deltaY = ev.pageY - this.origPageY;
+            }
+            return {
+                origEvent: ev,
+                isTouch: false,
+                subjectEl: this.subjectEl,
+                pageX: ev.pageX,
+                pageY: ev.pageY,
+                deltaX: deltaX,
+                deltaY: deltaY
+            };
+        };
+        PointerDragging.prototype.createEventFromTouch = function (ev, isFirst) {
+            var touches = ev.touches;
+            var pageX;
+            var pageY;
+            var deltaX = 0;
+            var deltaY = 0;
+            // if touch coords available, prefer,
+            // because FF would give bad ev.pageX ev.pageY
+            if (touches && touches.length) {
+                pageX = touches[0].pageX;
+                pageY = touches[0].pageY;
+            }
+            else {
+                pageX = ev.pageX;
+                pageY = ev.pageY;
+            }
+            // TODO: repeat code
+            if (isFirst) {
+                this.origPageX = pageX;
+                this.origPageY = pageY;
+            }
+            else {
+                deltaX = pageX - this.origPageX;
+                deltaY = pageY - this.origPageY;
+            }
+            return {
+                origEvent: ev,
+                isTouch: true,
+                subjectEl: this.subjectEl,
+                pageX: pageX,
+                pageY: pageY,
+                deltaX: deltaX,
+                deltaY: deltaY
+            };
+        };
+        return PointerDragging;
+    }());
+    // Returns a boolean whether this was a left mouse click and no ctrl key (which means right click on Mac)
+    function isPrimaryMouseButton(ev) {
+        return ev.button === 0 && !ev.ctrlKey;
+    }
+    // Ignoring fake mouse events generated by touch
+    // ----------------------------------------------------------------------------------------------------
+    function startIgnoringMouse() {
+        ignoreMouseDepth++;
+        setTimeout(function () {
+            ignoreMouseDepth--;
+        }, core.config.touchMouseIgnoreWait);
+    }
+    // We want to attach touchmove as early as possible for Safari
+    // ----------------------------------------------------------------------------------------------------
+    function listenerCreated() {
+        if (!(listenerCnt++)) {
+            window.addEventListener('touchmove', onWindowTouchMove, { passive: false });
+        }
+    }
+    function listenerDestroyed() {
+        if (!(--listenerCnt)) {
+            window.removeEventListener('touchmove', onWindowTouchMove, { passive: false });
+        }
+    }
+    function onWindowTouchMove(ev) {
+        if (isWindowTouchMoveCancelled) {
+            ev.preventDefault();
+        }
+    }
+
+    /*
+    An effect in which an element follows the movement of a pointer across the screen.
+    The moving element is a clone of some other element.
+    Must call start + handleMove + stop.
+    */
+    var ElementMirror = /** @class */ (function () {
+        function ElementMirror() {
+            this.isVisible = false; // must be explicitly enabled
+            this.sourceEl = null;
+            this.mirrorEl = null;
+            this.sourceElRect = null; // screen coords relative to viewport
+            // options that can be set directly by caller
+            this.parentNode = document.body;
+            this.zIndex = 9999;
+            this.revertDuration = 0;
+        }
+        ElementMirror.prototype.start = function (sourceEl, pageX, pageY) {
+            this.sourceEl = sourceEl;
+            this.sourceElRect = this.sourceEl.getBoundingClientRect();
+            this.origScreenX = pageX - window.pageXOffset;
+            this.origScreenY = pageY - window.pageYOffset;
+            this.deltaX = 0;
+            this.deltaY = 0;
+            this.updateElPosition();
+        };
+        ElementMirror.prototype.handleMove = function (pageX, pageY) {
+            this.deltaX = (pageX - window.pageXOffset) - this.origScreenX;
+            this.deltaY = (pageY - window.pageYOffset) - this.origScreenY;
+            this.updateElPosition();
+        };
+        // can be called before start
+        ElementMirror.prototype.setIsVisible = function (bool) {
+            if (bool) {
+                if (!this.isVisible) {
+                    if (this.mirrorEl) {
+                        this.mirrorEl.style.display = '';
+                    }
+                    this.isVisible = bool; // needs to happen before updateElPosition
+                    this.updateElPosition(); // because was not updating the position while invisible
+                }
+            }
+            else {
+                if (this.isVisible) {
+                    if (this.mirrorEl) {
+                        this.mirrorEl.style.display = 'none';
+                    }
+                    this.isVisible = bool;
+                }
+            }
+        };
+        // always async
+        ElementMirror.prototype.stop = function (needsRevertAnimation, callback) {
+            var _this = this;
+            var done = function () {
+                _this.cleanup();
+                callback();
+            };
+            if (needsRevertAnimation &&
+                this.mirrorEl &&
+                this.isVisible &&
+                this.revertDuration && // if 0, transition won't work
+                (this.deltaX || this.deltaY) // if same coords, transition won't work
+            ) {
+                this.doRevertAnimation(done, this.revertDuration);
+            }
+            else {
+                setTimeout(done, 0);
+            }
+        };
+        ElementMirror.prototype.doRevertAnimation = function (callback, revertDuration) {
+            var mirrorEl = this.mirrorEl;
+            var finalSourceElRect = this.sourceEl.getBoundingClientRect(); // because autoscrolling might have happened
+            mirrorEl.style.transition =
+                'top ' + revertDuration + 'ms,' +
+                    'left ' + revertDuration + 'ms';
+            core.applyStyle(mirrorEl, {
+                left: finalSourceElRect.left,
+                top: finalSourceElRect.top
+            });
+            core.whenTransitionDone(mirrorEl, function () {
+                mirrorEl.style.transition = '';
+                callback();
+            });
+        };
+        ElementMirror.prototype.cleanup = function () {
+            if (this.mirrorEl) {
+                core.removeElement(this.mirrorEl);
+                this.mirrorEl = null;
+            }
+            this.sourceEl = null;
+        };
+        ElementMirror.prototype.updateElPosition = function () {
+            if (this.sourceEl && this.isVisible) {
+                core.applyStyle(this.getMirrorEl(), {
+                    left: this.sourceElRect.left + this.deltaX,
+                    top: this.sourceElRect.top + this.deltaY
+                });
+            }
+        };
+        ElementMirror.prototype.getMirrorEl = function () {
+            var sourceElRect = this.sourceElRect;
+            var mirrorEl = this.mirrorEl;
+            if (!mirrorEl) {
+                mirrorEl = this.mirrorEl = this.sourceEl.cloneNode(true); // cloneChildren=true
+                // we don't want long taps or any mouse interaction causing selection/menus.
+                // would use preventSelection(), but that prevents selectstart, causing problems.
+                mirrorEl.classList.add('fc-unselectable');
+                mirrorEl.classList.add('fc-dragging');
+                core.applyStyle(mirrorEl, {
+                    position: 'fixed',
+                    zIndex: this.zIndex,
+                    visibility: '',
+                    boxSizing: 'border-box',
+                    width: sourceElRect.right - sourceElRect.left,
+                    height: sourceElRect.bottom - sourceElRect.top,
+                    right: 'auto',
+                    bottom: 'auto',
+                    margin: 0
+                });
+                this.parentNode.appendChild(mirrorEl);
+            }
+            return mirrorEl;
+        };
+        return ElementMirror;
+    }());
+
+    /*
+    Is a cache for a given element's scroll information (all the info that ScrollController stores)
+    in addition the "client rectangle" of the element.. the area within the scrollbars.
+
+    The cache can be in one of two modes:
+    - doesListening:false - ignores when the container is scrolled by someone else
+    - doesListening:true - watch for scrolling and update the cache
+    */
+    var ScrollGeomCache = /** @class */ (function (_super) {
+        __extends(ScrollGeomCache, _super);
+        function ScrollGeomCache(scrollController, doesListening) {
+            var _this = _super.call(this) || this;
+            _this.handleScroll = function () {
+                _this.scrollTop = _this.scrollController.getScrollTop();
+                _this.scrollLeft = _this.scrollController.getScrollLeft();
+                _this.handleScrollChange();
+            };
+            _this.scrollController = scrollController;
+            _this.doesListening = doesListening;
+            _this.scrollTop = _this.origScrollTop = scrollController.getScrollTop();
+            _this.scrollLeft = _this.origScrollLeft = scrollController.getScrollLeft();
+            _this.scrollWidth = scrollController.getScrollWidth();
+            _this.scrollHeight = scrollController.getScrollHeight();
+            _this.clientWidth = scrollController.getClientWidth();
+            _this.clientHeight = scrollController.getClientHeight();
+            _this.clientRect = _this.computeClientRect(); // do last in case it needs cached values
+            if (_this.doesListening) {
+                _this.getEventTarget().addEventListener('scroll', _this.handleScroll);
+            }
+            return _this;
+        }
+        ScrollGeomCache.prototype.destroy = function () {
+            if (this.doesListening) {
+                this.getEventTarget().removeEventListener('scroll', this.handleScroll);
+            }
+        };
+        ScrollGeomCache.prototype.getScrollTop = function () {
+            return this.scrollTop;
+        };
+        ScrollGeomCache.prototype.getScrollLeft = function () {
+            return this.scrollLeft;
+        };
+        ScrollGeomCache.prototype.setScrollTop = function (top) {
+            this.scrollController.setScrollTop(top);
+            if (!this.doesListening) {
+                // we are not relying on the element to normalize out-of-bounds scroll values
+                // so we need to sanitize ourselves
+                this.scrollTop = Math.max(Math.min(top, this.getMaxScrollTop()), 0);
+                this.handleScrollChange();
+            }
+        };
+        ScrollGeomCache.prototype.setScrollLeft = function (top) {
+            this.scrollController.setScrollLeft(top);
+            if (!this.doesListening) {
+                // we are not relying on the element to normalize out-of-bounds scroll values
+                // so we need to sanitize ourselves
+                this.scrollLeft = Math.max(Math.min(top, this.getMaxScrollLeft()), 0);
+                this.handleScrollChange();
+            }
+        };
+        ScrollGeomCache.prototype.getClientWidth = function () {
+            return this.clientWidth;
+        };
+        ScrollGeomCache.prototype.getClientHeight = function () {
+            return this.clientHeight;
+        };
+        ScrollGeomCache.prototype.getScrollWidth = function () {
+            return this.scrollWidth;
+        };
+        ScrollGeomCache.prototype.getScrollHeight = function () {
+            return this.scrollHeight;
+        };
+        ScrollGeomCache.prototype.handleScrollChange = function () {
+        };
+        return ScrollGeomCache;
+    }(core.ScrollController));
+    var ElementScrollGeomCache = /** @class */ (function (_super) {
+        __extends(ElementScrollGeomCache, _super);
+        function ElementScrollGeomCache(el, doesListening) {
+            return _super.call(this, new core.ElementScrollController(el), doesListening) || this;
+        }
+        ElementScrollGeomCache.prototype.getEventTarget = function () {
+            return this.scrollController.el;
+        };
+        ElementScrollGeomCache.prototype.computeClientRect = function () {
+            return core.computeInnerRect(this.scrollController.el);
+        };
+        return ElementScrollGeomCache;
+    }(ScrollGeomCache));
+    var WindowScrollGeomCache = /** @class */ (function (_super) {
+        __extends(WindowScrollGeomCache, _super);
+        function WindowScrollGeomCache(doesListening) {
+            return _super.call(this, new core.WindowScrollController(), doesListening) || this;
+        }
+        WindowScrollGeomCache.prototype.getEventTarget = function () {
+            return window;
+        };
+        WindowScrollGeomCache.prototype.computeClientRect = function () {
+            return {
+                left: this.scrollLeft,
+                right: this.scrollLeft + this.clientWidth,
+                top: this.scrollTop,
+                bottom: this.scrollTop + this.clientHeight
+            };
+        };
+        // the window is the only scroll object that changes it's rectangle relative
+        // to the document's topleft as it scrolls
+        WindowScrollGeomCache.prototype.handleScrollChange = function () {
+            this.clientRect = this.computeClientRect();
+        };
+        return WindowScrollGeomCache;
+    }(ScrollGeomCache));
+
+    // If available we are using native "performance" API instead of "Date"
+    // Read more about it on MDN:
+    // https://developer.mozilla.org/en-US/docs/Web/API/Performance
+    var getTime = typeof performance === 'function' ? performance.now : Date.now;
+    /*
+    For a pointer interaction, automatically scrolls certain scroll containers when the pointer
+    approaches the edge.
+
+    The caller must call start + handleMove + stop.
+    */
+    var AutoScroller = /** @class */ (function () {
+        function AutoScroller() {
+            var _this = this;
+            // options that can be set by caller
+            this.isEnabled = true;
+            this.scrollQuery = [window, '.fc-scroller'];
+            this.edgeThreshold = 50; // pixels
+            this.maxVelocity = 300; // pixels per second
+            // internal state
+            this.pointerScreenX = null;
+            this.pointerScreenY = null;
+            this.isAnimating = false;
+            this.scrollCaches = null;
+            // protect against the initial pointerdown being too close to an edge and starting the scroll
+            this.everMovedUp = false;
+            this.everMovedDown = false;
+            this.everMovedLeft = false;
+            this.everMovedRight = false;
+            this.animate = function () {
+                if (_this.isAnimating) { // wasn't cancelled between animation calls
+                    var edge = _this.computeBestEdge(_this.pointerScreenX + window.pageXOffset, _this.pointerScreenY + window.pageYOffset);
+                    if (edge) {
+                        var now = getTime();
+                        _this.handleSide(edge, (now - _this.msSinceRequest) / 1000);
+                        _this.requestAnimation(now);
+                    }
+                    else {
+                        _this.isAnimating = false; // will stop animation
+                    }
+                }
+            };
+        }
+        AutoScroller.prototype.start = function (pageX, pageY) {
+            if (this.isEnabled) {
+                this.scrollCaches = this.buildCaches();
+                this.pointerScreenX = null;
+                this.pointerScreenY = null;
+                this.everMovedUp = false;
+                this.everMovedDown = false;
+                this.everMovedLeft = false;
+                this.everMovedRight = false;
+                this.handleMove(pageX, pageY);
+            }
+        };
+        AutoScroller.prototype.handleMove = function (pageX, pageY) {
+            if (this.isEnabled) {
+                var pointerScreenX = pageX - window.pageXOffset;
+                var pointerScreenY = pageY - window.pageYOffset;
+                var yDelta = this.pointerScreenY === null ? 0 : pointerScreenY - this.pointerScreenY;
+                var xDelta = this.pointerScreenX === null ? 0 : pointerScreenX - this.pointerScreenX;
+                if (yDelta < 0) {
+                    this.everMovedUp = true;
+                }
+                else if (yDelta > 0) {
+                    this.everMovedDown = true;
+                }
+                if (xDelta < 0) {
+                    this.everMovedLeft = true;
+                }
+                else if (xDelta > 0) {
+                    this.everMovedRight = true;
+                }
+                this.pointerScreenX = pointerScreenX;
+                this.pointerScreenY = pointerScreenY;
+                if (!this.isAnimating) {
+                    this.isAnimating = true;
+                    this.requestAnimation(getTime());
+                }
+            }
+        };
+        AutoScroller.prototype.stop = function () {
+            if (this.isEnabled) {
+                this.isAnimating = false; // will stop animation
+                for (var _i = 0, _a = this.scrollCaches; _i < _a.length; _i++) {
+                    var scrollCache = _a[_i];
+                    scrollCache.destroy();
+                }
+                this.scrollCaches = null;
+            }
+        };
+        AutoScroller.prototype.requestAnimation = function (now) {
+            this.msSinceRequest = now;
+            requestAnimationFrame(this.animate);
+        };
+        AutoScroller.prototype.handleSide = function (edge, seconds) {
+            var scrollCache = edge.scrollCache;
+            var edgeThreshold = this.edgeThreshold;
+            var invDistance = edgeThreshold - edge.distance;
+            var velocity = // the closer to the edge, the faster we scroll
+             (invDistance * invDistance) / (edgeThreshold * edgeThreshold) * // quadratic
+                this.maxVelocity * seconds;
+            var sign = 1;
+            switch (edge.name) {
+                case 'left':
+                    sign = -1;
+                // falls through
+                case 'right':
+                    scrollCache.setScrollLeft(scrollCache.getScrollLeft() + velocity * sign);
+                    break;
+                case 'top':
+                    sign = -1;
+                // falls through
+                case 'bottom':
+                    scrollCache.setScrollTop(scrollCache.getScrollTop() + velocity * sign);
+                    break;
+            }
+        };
+        // left/top are relative to document topleft
+        AutoScroller.prototype.computeBestEdge = function (left, top) {
+            var edgeThreshold = this.edgeThreshold;
+            var bestSide = null;
+            for (var _i = 0, _a = this.scrollCaches; _i < _a.length; _i++) {
+                var scrollCache = _a[_i];
+                var rect = scrollCache.clientRect;
+                var leftDist = left - rect.left;
+                var rightDist = rect.right - left;
+                var topDist = top - rect.top;
+                var bottomDist = rect.bottom - top;
+                // completely within the rect?
+                if (leftDist >= 0 && rightDist >= 0 && topDist >= 0 && bottomDist >= 0) {
+                    if (topDist <= edgeThreshold && this.everMovedUp && scrollCache.canScrollUp() &&
+                        (!bestSide || bestSide.distance > topDist)) {
+                        bestSide = { scrollCache: scrollCache, name: 'top', distance: topDist };
+                    }
+                    if (bottomDist <= edgeThreshold && this.everMovedDown && scrollCache.canScrollDown() &&
+                        (!bestSide || bestSide.distance > bottomDist)) {
+                        bestSide = { scrollCache: scrollCache, name: 'bottom', distance: bottomDist };
+                    }
+                    if (leftDist <= edgeThreshold && this.everMovedLeft && scrollCache.canScrollLeft() &&
+                        (!bestSide || bestSide.distance > leftDist)) {
+                        bestSide = { scrollCache: scrollCache, name: 'left', distance: leftDist };
+                    }
+                    if (rightDist <= edgeThreshold && this.everMovedRight && scrollCache.canScrollRight() &&
+                        (!bestSide || bestSide.distance > rightDist)) {
+                        bestSide = { scrollCache: scrollCache, name: 'right', distance: rightDist };
+                    }
+                }
+            }
+            return bestSide;
+        };
+        AutoScroller.prototype.buildCaches = function () {
+            return this.queryScrollEls().map(function (el) {
+                if (el === window) {
+                    return new WindowScrollGeomCache(false); // false = don't listen to user-generated scrolls
+                }
+                else {
+                    return new ElementScrollGeomCache(el, false); // false = don't listen to user-generated scrolls
+                }
+            });
+        };
+        AutoScroller.prototype.queryScrollEls = function () {
+            var els = [];
+            for (var _i = 0, _a = this.scrollQuery; _i < _a.length; _i++) {
+                var query = _a[_i];
+                if (typeof query === 'object') {
+                    els.push(query);
+                }
+                else {
+                    els.push.apply(els, Array.prototype.slice.call(document.querySelectorAll(query)));
+                }
+            }
+            return els;
+        };
+        return AutoScroller;
+    }());
+
+    /*
+    Monitors dragging on an element. Has a number of high-level features:
+    - minimum distance required before dragging
+    - minimum wait time ("delay") before dragging
+    - a mirror element that follows the pointer
+    */
+    var FeaturefulElementDragging = /** @class */ (function (_super) {
+        __extends(FeaturefulElementDragging, _super);
+        function FeaturefulElementDragging(containerEl) {
+            var _this = _super.call(this, containerEl) || this;
+            // options that can be directly set by caller
+            // the caller can also set the PointerDragging's options as well
+            _this.delay = null;
+            _this.minDistance = 0;
+            _this.touchScrollAllowed = true; // prevents drag from starting and blocks scrolling during drag
+            _this.mirrorNeedsRevert = false;
+            _this.isInteracting = false; // is the user validly moving the pointer? lasts until pointerup
+            _this.isDragging = false; // is it INTENTFULLY dragging? lasts until after revert animation
+            _this.isDelayEnded = false;
+            _this.isDistanceSurpassed = false;
+            _this.delayTimeoutId = null;
+            _this.onPointerDown = function (ev) {
+                if (!_this.isDragging) { // so new drag doesn't happen while revert animation is going
+                    _this.isInteracting = true;
+                    _this.isDelayEnded = false;
+                    _this.isDistanceSurpassed = false;
+                    core.preventSelection(document.body);
+                    core.preventContextMenu(document.body);
+                    // prevent links from being visited if there's an eventual drag.
+                    // also prevents selection in older browsers (maybe?).
+                    // not necessary for touch, besides, browser would complain about passiveness.
+                    if (!ev.isTouch) {
+                        ev.origEvent.preventDefault();
+                    }
+                    _this.emitter.trigger('pointerdown', ev);
+                    if (!_this.pointer.shouldIgnoreMove) {
+                        // actions related to initiating dragstart+dragmove+dragend...
+                        _this.mirror.setIsVisible(false); // reset. caller must set-visible
+                        _this.mirror.start(ev.subjectEl, ev.pageX, ev.pageY); // must happen on first pointer down
+                        _this.startDelay(ev);
+                        if (!_this.minDistance) {
+                            _this.handleDistanceSurpassed(ev);
+                        }
+                    }
+                }
+            };
+            _this.onPointerMove = function (ev) {
+                if (_this.isInteracting) { // if false, still waiting for previous drag's revert
+                    _this.emitter.trigger('pointermove', ev);
+                    if (!_this.isDistanceSurpassed) {
+                        var minDistance = _this.minDistance;
+                        var distanceSq = void 0; // current distance from the origin, squared
+                        var deltaX = ev.deltaX, deltaY = ev.deltaY;
+                        distanceSq = deltaX * deltaX + deltaY * deltaY;
+                        if (distanceSq >= minDistance * minDistance) { // use pythagorean theorem
+                            _this.handleDistanceSurpassed(ev);
+                        }
+                    }
+                    if (_this.isDragging) {
+                        // a real pointer move? (not one simulated by scrolling)
+                        if (ev.origEvent.type !== 'scroll') {
+                            _this.mirror.handleMove(ev.pageX, ev.pageY);
+                            _this.autoScroller.handleMove(ev.pageX, ev.pageY);
+                        }
+                        _this.emitter.trigger('dragmove', ev);
+                    }
+                }
+            };
+            _this.onPointerUp = function (ev) {
+                if (_this.isInteracting) { // if false, still waiting for previous drag's revert
+                    _this.isInteracting = false;
+                    core.allowSelection(document.body);
+                    core.allowContextMenu(document.body);
+                    _this.emitter.trigger('pointerup', ev); // can potentially set mirrorNeedsRevert
+                    if (_this.isDragging) {
+                        _this.autoScroller.stop();
+                        _this.tryStopDrag(ev); // which will stop the mirror
+                    }
+                    if (_this.delayTimeoutId) {
+                        clearTimeout(_this.delayTimeoutId);
+                        _this.delayTimeoutId = null;
+                    }
+                }
+            };
+            var pointer = _this.pointer = new PointerDragging(containerEl);
+            pointer.emitter.on('pointerdown', _this.onPointerDown);
+            pointer.emitter.on('pointermove', _this.onPointerMove);
+            pointer.emitter.on('pointerup', _this.onPointerUp);
+            _this.mirror = new ElementMirror();
+            _this.autoScroller = new AutoScroller();
+            return _this;
+        }
+        FeaturefulElementDragging.prototype.destroy = function () {
+            this.pointer.destroy();
+        };
+        FeaturefulElementDragging.prototype.startDelay = function (ev) {
+            var _this = this;
+            if (typeof this.delay === 'number') {
+                this.delayTimeoutId = setTimeout(function () {
+                    _this.delayTimeoutId = null;
+                    _this.handleDelayEnd(ev);
+                }, this.delay);
+            }
+            else {
+                this.handleDelayEnd(ev);
+            }
+        };
+        FeaturefulElementDragging.prototype.handleDelayEnd = function (ev) {
+            this.isDelayEnded = true;
+            this.tryStartDrag(ev);
+        };
+        FeaturefulElementDragging.prototype.handleDistanceSurpassed = function (ev) {
+            this.isDistanceSurpassed = true;
+            this.tryStartDrag(ev);
+        };
+        FeaturefulElementDragging.prototype.tryStartDrag = function (ev) {
+            if (this.isDelayEnded && this.isDistanceSurpassed) {
+                if (!this.pointer.wasTouchScroll || this.touchScrollAllowed) {
+                    this.isDragging = true;
+                    this.mirrorNeedsRevert = false;
+                    this.autoScroller.start(ev.pageX, ev.pageY);
+                    this.emitter.trigger('dragstart', ev);
+                    if (this.touchScrollAllowed === false) {
+                        this.pointer.cancelTouchScroll();
+                    }
+                }
+            }
+        };
+        FeaturefulElementDragging.prototype.tryStopDrag = function (ev) {
+            // .stop() is ALWAYS asynchronous, which we NEED because we want all pointerup events
+            // that come from the document to fire beforehand. much more convenient this way.
+            this.mirror.stop(this.mirrorNeedsRevert, this.stopDrag.bind(this, ev) // bound with args
+            );
+        };
+        FeaturefulElementDragging.prototype.stopDrag = function (ev) {
+            this.isDragging = false;
+            this.emitter.trigger('dragend', ev);
+        };
+        // fill in the implementations...
+        FeaturefulElementDragging.prototype.setIgnoreMove = function (bool) {
+            this.pointer.shouldIgnoreMove = bool;
+        };
+        FeaturefulElementDragging.prototype.setMirrorIsVisible = function (bool) {
+            this.mirror.setIsVisible(bool);
+        };
+        FeaturefulElementDragging.prototype.setMirrorNeedsRevert = function (bool) {
+            this.mirrorNeedsRevert = bool;
+        };
+        FeaturefulElementDragging.prototype.setAutoScrollEnabled = function (bool) {
+            this.autoScroller.isEnabled = bool;
+        };
+        return FeaturefulElementDragging;
+    }(core.ElementDragging));
+
+    /*
+    When this class is instantiated, it records the offset of an element (relative to the document topleft),
+    and continues to monitor scrolling, updating the cached coordinates if it needs to.
+    Does not access the DOM after instantiation, so highly performant.
+
+    Also keeps track of all scrolling/overflow:hidden containers that are parents of the given element
+    and an determine if a given point is inside the combined clipping rectangle.
+    */
+    var OffsetTracker = /** @class */ (function () {
+        function OffsetTracker(el) {
+            this.origRect = core.computeRect(el);
+            // will work fine for divs that have overflow:hidden
+            this.scrollCaches = core.getClippingParents(el).map(function (el) {
+                return new ElementScrollGeomCache(el, true); // listen=true
+            });
+        }
+        OffsetTracker.prototype.destroy = function () {
+            for (var _i = 0, _a = this.scrollCaches; _i < _a.length; _i++) {
+                var scrollCache = _a[_i];
+                scrollCache.destroy();
+            }
+        };
+        OffsetTracker.prototype.computeLeft = function () {
+            var left = this.origRect.left;
+            for (var _i = 0, _a = this.scrollCaches; _i < _a.length; _i++) {
+                var scrollCache = _a[_i];
+                left += scrollCache.origScrollLeft - scrollCache.getScrollLeft();
+            }
+            return left;
+        };
+        OffsetTracker.prototype.computeTop = function () {
+            var top = this.origRect.top;
+            for (var _i = 0, _a = this.scrollCaches; _i < _a.length; _i++) {
+                var scrollCache = _a[_i];
+                top += scrollCache.origScrollTop - scrollCache.getScrollTop();
+            }
+            return top;
+        };
+        OffsetTracker.prototype.isWithinClipping = function (pageX, pageY) {
+            var point = { left: pageX, top: pageY };
+            for (var _i = 0, _a = this.scrollCaches; _i < _a.length; _i++) {
+                var scrollCache = _a[_i];
+                if (!isIgnoredClipping(scrollCache.getEventTarget()) &&
+                    !core.pointInsideRect(point, scrollCache.clientRect)) {
+                    return false;
+                }
+            }
+            return true;
+        };
+        return OffsetTracker;
+    }());
+    // certain clipping containers should never constrain interactions, like <html> and <body>
+    // https://github.com/fullcalendar/fullcalendar/issues/3615
+    function isIgnoredClipping(node) {
+        var tagName = node.tagName;
+        return tagName === 'HTML' || tagName === 'BODY';
+    }
+
+    /*
+    Tracks movement over multiple droppable areas (aka "hits")
+    that exist in one or more DateComponents.
+    Relies on an existing draggable.
+
+    emits:
+    - pointerdown
+    - dragstart
+    - hitchange - fires initially, even if not over a hit
+    - pointerup
+    - (hitchange - again, to null, if ended over a hit)
+    - dragend
+    */
+    var HitDragging = /** @class */ (function () {
+        function HitDragging(dragging, droppableStore) {
+            var _this = this;
+            // options that can be set by caller
+            this.useSubjectCenter = false;
+            this.requireInitial = true; // if doesn't start out on a hit, won't emit any events
+            this.initialHit = null;
+            this.movingHit = null;
+            this.finalHit = null; // won't ever be populated if shouldIgnoreMove
+            this.handlePointerDown = function (ev) {
+                var dragging = _this.dragging;
+                _this.initialHit = null;
+                _this.movingHit = null;
+                _this.finalHit = null;
+                _this.prepareHits();
+                _this.processFirstCoord(ev);
+                if (_this.initialHit || !_this.requireInitial) {
+                    dragging.setIgnoreMove(false);
+                    _this.emitter.trigger('pointerdown', ev); // TODO: fire this before computing processFirstCoord, so listeners can cancel. this gets fired by almost every handler :(
+                }
+                else {
+                    dragging.setIgnoreMove(true);
+                }
+            };
+            this.handleDragStart = function (ev) {
+                _this.emitter.trigger('dragstart', ev);
+                _this.handleMove(ev, true); // force = fire even if initially null
+            };
+            this.handleDragMove = function (ev) {
+                _this.emitter.trigger('dragmove', ev);
+                _this.handleMove(ev);
+            };
+            this.handlePointerUp = function (ev) {
+                _this.releaseHits();
+                _this.emitter.trigger('pointerup', ev);
+            };
+            this.handleDragEnd = function (ev) {
+                if (_this.movingHit) {
+                    _this.emitter.trigger('hitupdate', null, true, ev);
+                }
+                _this.finalHit = _this.movingHit;
+                _this.movingHit = null;
+                _this.emitter.trigger('dragend', ev);
+            };
+            this.droppableStore = droppableStore;
+            dragging.emitter.on('pointerdown', this.handlePointerDown);
+            dragging.emitter.on('dragstart', this.handleDragStart);
+            dragging.emitter.on('dragmove', this.handleDragMove);
+            dragging.emitter.on('pointerup', this.handlePointerUp);
+            dragging.emitter.on('dragend', this.handleDragEnd);
+            this.dragging = dragging;
+            this.emitter = new core.EmitterMixin();
+        }
+        // sets initialHit
+        // sets coordAdjust
+        HitDragging.prototype.processFirstCoord = function (ev) {
+            var origPoint = { left: ev.pageX, top: ev.pageY };
+            var adjustedPoint = origPoint;
+            var subjectEl = ev.subjectEl;
+            var subjectRect;
+            if (subjectEl !== document) {
+                subjectRect = core.computeRect(subjectEl);
+                adjustedPoint = core.constrainPoint(adjustedPoint, subjectRect);
+            }
+            var initialHit = this.initialHit = this.queryHitForOffset(adjustedPoint.left, adjustedPoint.top);
+            if (initialHit) {
+                if (this.useSubjectCenter && subjectRect) {
+                    var slicedSubjectRect = core.intersectRects(subjectRect, initialHit.rect);
+                    if (slicedSubjectRect) {
+                        adjustedPoint = core.getRectCenter(slicedSubjectRect);
+                    }
+                }
+                this.coordAdjust = core.diffPoints(adjustedPoint, origPoint);
+            }
+            else {
+                this.coordAdjust = { left: 0, top: 0 };
+            }
+        };
+        HitDragging.prototype.handleMove = function (ev, forceHandle) {
+            var hit = this.queryHitForOffset(ev.pageX + this.coordAdjust.left, ev.pageY + this.coordAdjust.top);
+            if (forceHandle || !isHitsEqual(this.movingHit, hit)) {
+                this.movingHit = hit;
+                this.emitter.trigger('hitupdate', hit, false, ev);
+            }
+        };
+        HitDragging.prototype.prepareHits = function () {
+            this.offsetTrackers = core.mapHash(this.droppableStore, function (interactionSettings) {
+                return new OffsetTracker(interactionSettings.el);
+            });
+        };
+        HitDragging.prototype.releaseHits = function () {
+            var offsetTrackers = this.offsetTrackers;
+            for (var id in offsetTrackers) {
+                offsetTrackers[id].destroy();
+            }
+            this.offsetTrackers = {};
+        };
+        HitDragging.prototype.queryHitForOffset = function (offsetLeft, offsetTop) {
+            var _a = this, droppableStore = _a.droppableStore, offsetTrackers = _a.offsetTrackers;
+            var bestHit = null;
+            for (var id in droppableStore) {
+                var component = droppableStore[id].component;
+                var offsetTracker = offsetTrackers[id];
+                if (offsetTracker.isWithinClipping(offsetLeft, offsetTop)) {
+                    var originLeft = offsetTracker.computeLeft();
+                    var originTop = offsetTracker.computeTop();
+                    var positionLeft = offsetLeft - originLeft;
+                    var positionTop = offsetTop - originTop;
+                    var origRect = offsetTracker.origRect;
+                    var width = origRect.right - origRect.left;
+                    var height = origRect.bottom - origRect.top;
+                    if (
+                    // must be within the element's bounds
+                    positionLeft >= 0 && positionLeft < width &&
+                        positionTop >= 0 && positionTop < height) {
+                        var hit = component.queryHit(positionLeft, positionTop, width, height);
+                        if (hit &&
+                            (
+                            // make sure the hit is within activeRange, meaning it's not a deal cell
+                            !component.props.dateProfile || // hack for DayTile
+                                core.rangeContainsRange(component.props.dateProfile.activeRange, hit.dateSpan.range)) &&
+                            (!bestHit || hit.layer > bestHit.layer)) {
+                            // TODO: better way to re-orient rectangle
+                            hit.rect.left += originLeft;
+                            hit.rect.right += originLeft;
+                            hit.rect.top += originTop;
+                            hit.rect.bottom += originTop;
+                            bestHit = hit;
+                        }
+                    }
+                }
+            }
+            return bestHit;
+        };
+        return HitDragging;
+    }());
+    function isHitsEqual(hit0, hit1) {
+        if (!hit0 && !hit1) {
+            return true;
+        }
+        if (Boolean(hit0) !== Boolean(hit1)) {
+            return false;
+        }
+        return core.isDateSpansEqual(hit0.dateSpan, hit1.dateSpan);
+    }
+
+    /*
+    Monitors when the user clicks on a specific date/time of a component.
+    A pointerdown+pointerup on the same "hit" constitutes a click.
+    */
+    var DateClicking = /** @class */ (function (_super) {
+        __extends(DateClicking, _super);
+        function DateClicking(settings) {
+            var _this = _super.call(this, settings) || this;
+            _this.handlePointerDown = function (ev) {
+                var dragging = _this.dragging;
+                // do this in pointerdown (not dragend) because DOM might be mutated by the time dragend is fired
+                dragging.setIgnoreMove(!_this.component.isValidDateDownEl(dragging.pointer.downEl));
+            };
+            // won't even fire if moving was ignored
+            _this.handleDragEnd = function (ev) {
+                var component = _this.component;
+                var pointer = _this.dragging.pointer;
+                if (!pointer.wasTouchScroll) {
+                    var _a = _this.hitDragging, initialHit = _a.initialHit, finalHit = _a.finalHit;
+                    if (initialHit && finalHit && isHitsEqual(initialHit, finalHit)) {
+                        component.calendar.triggerDateClick(initialHit.dateSpan, initialHit.dayEl, component.view, ev.origEvent);
+                    }
+                }
+            };
+            var component = settings.component;
+            // we DO want to watch pointer moves because otherwise finalHit won't get populated
+            _this.dragging = new FeaturefulElementDragging(component.el);
+            _this.dragging.autoScroller.isEnabled = false;
+            var hitDragging = _this.hitDragging = new HitDragging(_this.dragging, core.interactionSettingsToStore(settings));
+            hitDragging.emitter.on('pointerdown', _this.handlePointerDown);
+            hitDragging.emitter.on('dragend', _this.handleDragEnd);
+            return _this;
+        }
+        DateClicking.prototype.destroy = function () {
+            this.dragging.destroy();
+        };
+        return DateClicking;
+    }(core.Interaction));
+
+    /*
+    Tracks when the user selects a portion of time of a component,
+    constituted by a drag over date cells, with a possible delay at the beginning of the drag.
+    */
+    var DateSelecting = /** @class */ (function (_super) {
+        __extends(DateSelecting, _super);
+        function DateSelecting(settings) {
+            var _this = _super.call(this, settings) || this;
+            _this.dragSelection = null;
+            _this.handlePointerDown = function (ev) {
+                var _a = _this, component = _a.component, dragging = _a.dragging;
+                var canSelect = component.opt('selectable') &&
+                    component.isValidDateDownEl(ev.origEvent.target);
+                // don't bother to watch expensive moves if component won't do selection
+                dragging.setIgnoreMove(!canSelect);
+                // if touch, require user to hold down
+                dragging.delay = ev.isTouch ? getComponentTouchDelay(component) : null;
+            };
+            _this.handleDragStart = function (ev) {
+                _this.component.calendar.unselect(ev); // unselect previous selections
+            };
+            _this.handleHitUpdate = function (hit, isFinal) {
+                var calendar = _this.component.calendar;
+                var dragSelection = null;
+                var isInvalid = false;
+                if (hit) {
+                    dragSelection = joinHitsIntoSelection(_this.hitDragging.initialHit, hit, calendar.pluginSystem.hooks.dateSelectionTransformers);
+                    if (!dragSelection || !_this.component.isDateSelectionValid(dragSelection)) {
+                        isInvalid = true;
+                        dragSelection = null;
+                    }
+                }
+                if (dragSelection) {
+                    calendar.dispatch({ type: 'SELECT_DATES', selection: dragSelection });
+                }
+                else if (!isFinal) { // only unselect if moved away while dragging
+                    calendar.dispatch({ type: 'UNSELECT_DATES' });
+                }
+                if (!isInvalid) {
+                    core.enableCursor();
+                }
+                else {
+                    core.disableCursor();
+                }
+                if (!isFinal) {
+                    _this.dragSelection = dragSelection; // only clear if moved away from all hits while dragging
+                }
+            };
+            _this.handlePointerUp = function (pev) {
+                if (_this.dragSelection) {
+                    // selection is already rendered, so just need to report selection
+                    _this.component.calendar.triggerDateSelect(_this.dragSelection, pev);
+                    _this.dragSelection = null;
+                }
+            };
+            var component = settings.component;
+            var dragging = _this.dragging = new FeaturefulElementDragging(component.el);
+            dragging.touchScrollAllowed = false;
+            dragging.minDistance = component.opt('selectMinDistance') || 0;
+            dragging.autoScroller.isEnabled = component.opt('dragScroll');
+            var hitDragging = _this.hitDragging = new HitDragging(_this.dragging, core.interactionSettingsToStore(settings));
+            hitDragging.emitter.on('pointerdown', _this.handlePointerDown);
+            hitDragging.emitter.on('dragstart', _this.handleDragStart);
+            hitDragging.emitter.on('hitupdate', _this.handleHitUpdate);
+            hitDragging.emitter.on('pointerup', _this.handlePointerUp);
+            return _this;
+        }
+        DateSelecting.prototype.destroy = function () {
+            this.dragging.destroy();
+        };
+        return DateSelecting;
+    }(core.Interaction));
+    function getComponentTouchDelay(component) {
+        var delay = component.opt('selectLongPressDelay');
+        if (delay == null) {
+            delay = component.opt('longPressDelay');
+        }
+        return delay;
+    }
+    function joinHitsIntoSelection(hit0, hit1, dateSelectionTransformers) {
+        var dateSpan0 = hit0.dateSpan;
+        var dateSpan1 = hit1.dateSpan;
+        var ms = [
+            dateSpan0.range.start,
+            dateSpan0.range.end,
+            dateSpan1.range.start,
+            dateSpan1.range.end
+        ];
+        ms.sort(core.compareNumbers);
+        var props = {};
+        for (var _i = 0, dateSelectionTransformers_1 = dateSelectionTransformers; _i < dateSelectionTransformers_1.length; _i++) {
+            var transformer = dateSelectionTransformers_1[_i];
+            var res = transformer(hit0, hit1);
+            if (res === false) {
+                return null;
+            }
+            else if (res) {
+                __assign(props, res);
+            }
+        }
+        props.range = { start: ms[0], end: ms[3] };
+        props.allDay = dateSpan0.allDay;
+        return props;
+    }
+
+    var EventDragging = /** @class */ (function (_super) {
+        __extends(EventDragging, _super);
+        function EventDragging(settings) {
+            var _this = _super.call(this, settings) || this;
+            // internal state
+            _this.subjectSeg = null; // the seg being selected/dragged
+            _this.isDragging = false;
+            _this.eventRange = null;
+            _this.relevantEvents = null; // the events being dragged
+            _this.receivingCalendar = null;
+            _this.validMutation = null;
+            _this.mutatedRelevantEvents = null;
+            _this.handlePointerDown = function (ev) {
+                var origTarget = ev.origEvent.target;
+                var _a = _this, component = _a.component, dragging = _a.dragging;
+                var mirror = dragging.mirror;
+                var initialCalendar = component.calendar;
+                var subjectSeg = _this.subjectSeg = core.getElSeg(ev.subjectEl);
+                var eventRange = _this.eventRange = subjectSeg.eventRange;
+                var eventInstanceId = eventRange.instance.instanceId;
+                _this.relevantEvents = core.getRelevantEvents(initialCalendar.state.eventStore, eventInstanceId);
+                dragging.minDistance = ev.isTouch ? 0 : component.opt('eventDragMinDistance');
+                dragging.delay =
+                    // only do a touch delay if touch and this event hasn't been selected yet
+                    (ev.isTouch && eventInstanceId !== component.props.eventSelection) ?
+                        getComponentTouchDelay$1(component) :
+                        null;
+                mirror.parentNode = initialCalendar.el;
+                mirror.revertDuration = component.opt('dragRevertDuration');
+                var isValid = component.isValidSegDownEl(origTarget) &&
+                    !core.elementClosest(origTarget, '.fc-resizer');
+                dragging.setIgnoreMove(!isValid);
+                // disable dragging for elements that are resizable (ie, selectable)
+                // but are not draggable
+                _this.isDragging = isValid &&
+                    ev.subjectEl.classList.contains('fc-draggable');
+            };
+            _this.handleDragStart = function (ev) {
+                var initialCalendar = _this.component.calendar;
+                var eventRange = _this.eventRange;
+                var eventInstanceId = eventRange.instance.instanceId;
+                if (ev.isTouch) {
+                    // need to select a different event?
+                    if (eventInstanceId !== _this.component.props.eventSelection) {
+                        initialCalendar.dispatch({ type: 'SELECT_EVENT', eventInstanceId: eventInstanceId });
+                    }
+                }
+                else {
+                    // if now using mouse, but was previous touch interaction, clear selected event
+                    initialCalendar.dispatch({ type: 'UNSELECT_EVENT' });
+                }
+                if (_this.isDragging) {
+                    initialCalendar.unselect(ev); // unselect *date* selection
+                    initialCalendar.publiclyTrigger('eventDragStart', [
+                        {
+                            el: _this.subjectSeg.el,
+                            event: new core.EventApi(initialCalendar, eventRange.def, eventRange.instance),
+                            jsEvent: ev.origEvent,
+                            view: _this.component.view
+                        }
+                    ]);
+                }
+            };
+            _this.handleHitUpdate = function (hit, isFinal) {
+                if (!_this.isDragging) {
+                    return;
+                }
+                var relevantEvents = _this.relevantEvents;
+                var initialHit = _this.hitDragging.initialHit;
+                var initialCalendar = _this.component.calendar;
+                // states based on new hit
+                var receivingCalendar = null;
+                var mutation = null;
+                var mutatedRelevantEvents = null;
+                var isInvalid = false;
+                var interaction = {
+                    affectedEvents: relevantEvents,
+                    mutatedEvents: core.createEmptyEventStore(),
+                    isEvent: true,
+                    origSeg: _this.subjectSeg
+                };
+                if (hit) {
+                    var receivingComponent = hit.component;
+                    receivingCalendar = receivingComponent.calendar;
+                    if (initialCalendar === receivingCalendar ||
+                        receivingComponent.opt('editable') && receivingComponent.opt('droppable')) {
+                        mutation = computeEventMutation(initialHit, hit, receivingCalendar.pluginSystem.hooks.eventDragMutationMassagers);
+                        if (mutation) {
+                            mutatedRelevantEvents = core.applyMutationToEventStore(relevantEvents, receivingCalendar.eventUiBases, mutation, receivingCalendar);
+                            interaction.mutatedEvents = mutatedRelevantEvents;
+                            if (!receivingComponent.isInteractionValid(interaction)) {
+                                isInvalid = true;
+                                mutation = null;
+                                mutatedRelevantEvents = null;
+                                interaction.mutatedEvents = core.createEmptyEventStore();
+                            }
+                        }
+                    }
+                    else {
+                        receivingCalendar = null;
+                    }
+                }
+                _this.displayDrag(receivingCalendar, interaction);
+                if (!isInvalid) {
+                    core.enableCursor();
+                }
+                else {
+                    core.disableCursor();
+                }
+                if (!isFinal) {
+                    if (initialCalendar === receivingCalendar && // TODO: write test for this
+                        isHitsEqual(initialHit, hit)) {
+                        mutation = null;
+                    }
+                    _this.dragging.setMirrorNeedsRevert(!mutation);
+                    // render the mirror if no already-rendered mirror
+                    // TODO: wish we could somehow wait for dispatch to guarantee render
+                    _this.dragging.setMirrorIsVisible(!hit || !document.querySelector('.fc-mirror'));
+                    // assign states based on new hit
+                    _this.receivingCalendar = receivingCalendar;
+                    _this.validMutation = mutation;
+                    _this.mutatedRelevantEvents = mutatedRelevantEvents;
+                }
+            };
+            _this.handlePointerUp = function () {
+                if (!_this.isDragging) {
+                    _this.cleanup(); // because handleDragEnd won't fire
+                }
+            };
+            _this.handleDragEnd = function (ev) {
+                if (_this.isDragging) {
+                    var initialCalendar_1 = _this.component.calendar;
+                    var initialView = _this.component.view;
+                    var receivingCalendar = _this.receivingCalendar;
+                    var eventDef = _this.eventRange.def;
+                    var eventInstance = _this.eventRange.instance;
+                    var eventApi = new core.EventApi(initialCalendar_1, eventDef, eventInstance);
+                    var relevantEvents_1 = _this.relevantEvents;
+                    var mutatedRelevantEvents = _this.mutatedRelevantEvents;
+                    var finalHit = _this.hitDragging.finalHit;
+                    _this.clearDrag(); // must happen after revert animation
+                    initialCalendar_1.publiclyTrigger('eventDragStop', [
+                        {
+                            el: _this.subjectSeg.el,
+                            event: eventApi,
+                            jsEvent: ev.origEvent,
+                            view: initialView
+                        }
+                    ]);
+                    if (_this.validMutation) {
+                        // dropped within same calendar
+                        if (receivingCalendar === initialCalendar_1) {
+                            initialCalendar_1.dispatch({
+                                type: 'MERGE_EVENTS',
+                                eventStore: mutatedRelevantEvents
+                            });
+                            var eventDropArg = {};
+                            for (var _i = 0, _a = initialCalendar_1.pluginSystem.hooks.eventDropTransformers; _i < _a.length; _i++) {
+                                var transformer = _a[_i];
+                                __assign(eventDropArg, transformer(_this.validMutation, initialCalendar_1));
+                            }
+                            __assign(eventDropArg, {
+                                el: ev.subjectEl,
+                                delta: _this.validMutation.startDelta,
+                                oldEvent: eventApi,
+                                event: new core.EventApi(// the data AFTER the mutation
+                                initialCalendar_1, mutatedRelevantEvents.defs[eventDef.defId], eventInstance ? mutatedRelevantEvents.instances[eventInstance.instanceId] : null),
+                                revert: function () {
+                                    initialCalendar_1.dispatch({
+                                        type: 'MERGE_EVENTS',
+                                        eventStore: relevantEvents_1
+                                    });
+                                },
+                                jsEvent: ev.origEvent,
+                                view: initialView
+                            });
+                            initialCalendar_1.publiclyTrigger('eventDrop', [eventDropArg]);
+                            // dropped in different calendar
+                        }
+                        else if (receivingCalendar) {
+                            initialCalendar_1.publiclyTrigger('eventLeave', [
+                                {
+                                    draggedEl: ev.subjectEl,
+                                    event: eventApi,
+                                    view: initialView
+                                }
+                            ]);
+                            initialCalendar_1.dispatch({
+                                type: 'REMOVE_EVENT_INSTANCES',
+                                instances: _this.mutatedRelevantEvents.instances
+                            });
+                            receivingCalendar.dispatch({
+                                type: 'MERGE_EVENTS',
+                                eventStore: _this.mutatedRelevantEvents
+                            });
+                            if (ev.isTouch) {
+                                receivingCalendar.dispatch({
+                                    type: 'SELECT_EVENT',
+                                    eventInstanceId: eventInstance.instanceId
+                                });
+                            }
+                            var dropArg = receivingCalendar.buildDatePointApi(finalHit.dateSpan);
+                            dropArg.draggedEl = ev.subjectEl;
+                            dropArg.jsEvent = ev.origEvent;
+                            dropArg.view = finalHit.component; // ?
+                            receivingCalendar.publiclyTrigger('drop', [dropArg]);
+                            receivingCalendar.publiclyTrigger('eventReceive', [
+                                {
+                                    draggedEl: ev.subjectEl,
+                                    event: new core.EventApi(// the data AFTER the mutation
+                                    receivingCalendar, mutatedRelevantEvents.defs[eventDef.defId], mutatedRelevantEvents.instances[eventInstance.instanceId]),
+                                    view: finalHit.component
+                                }
+                            ]);
+                        }
+                    }
+                    else {
+                        initialCalendar_1.publiclyTrigger('_noEventDrop');
+                    }
+                }
+                _this.cleanup();
+            };
+            var component = _this.component;
+            var dragging = _this.dragging = new FeaturefulElementDragging(component.el);
+            dragging.pointer.selector = EventDragging.SELECTOR;
+            dragging.touchScrollAllowed = false;
+            dragging.autoScroller.isEnabled = component.opt('dragScroll');
+            var hitDragging = _this.hitDragging = new HitDragging(_this.dragging, core.interactionSettingsStore);
+            hitDragging.useSubjectCenter = settings.useEventCenter;
+            hitDragging.emitter.on('pointerdown', _this.handlePointerDown);
+            hitDragging.emitter.on('dragstart', _this.handleDragStart);
+            hitDragging.emitter.on('hitupdate', _this.handleHitUpdate);
+            hitDragging.emitter.on('pointerup', _this.handlePointerUp);
+            hitDragging.emitter.on('dragend', _this.handleDragEnd);
+            return _this;
+        }
+        EventDragging.prototype.destroy = function () {
+            this.dragging.destroy();
+        };
+        // render a drag state on the next receivingCalendar
+        EventDragging.prototype.displayDrag = function (nextCalendar, state) {
+            var initialCalendar = this.component.calendar;
+            var prevCalendar = this.receivingCalendar;
+            // does the previous calendar need to be cleared?
+            if (prevCalendar && prevCalendar !== nextCalendar) {
+                // does the initial calendar need to be cleared?
+                // if so, don't clear all the way. we still need to to hide the affectedEvents
+                if (prevCalendar === initialCalendar) {
+                    prevCalendar.dispatch({
+                        type: 'SET_EVENT_DRAG',
+                        state: {
+                            affectedEvents: state.affectedEvents,
+                            mutatedEvents: core.createEmptyEventStore(),
+                            isEvent: true,
+                            origSeg: state.origSeg
+                        }
+                    });
+                    // completely clear the old calendar if it wasn't the initial
+                }
+                else {
+                    prevCalendar.dispatch({ type: 'UNSET_EVENT_DRAG' });
+                }
+            }
+            if (nextCalendar) {
+                nextCalendar.dispatch({ type: 'SET_EVENT_DRAG', state: state });
+            }
+        };
+        EventDragging.prototype.clearDrag = function () {
+            var initialCalendar = this.component.calendar;
+            var receivingCalendar = this.receivingCalendar;
+            if (receivingCalendar) {
+                receivingCalendar.dispatch({ type: 'UNSET_EVENT_DRAG' });
+            }
+            // the initial calendar might have an dummy drag state from displayDrag
+            if (initialCalendar !== receivingCalendar) {
+                initialCalendar.dispatch({ type: 'UNSET_EVENT_DRAG' });
+            }
+        };
+        EventDragging.prototype.cleanup = function () {
+            this.subjectSeg = null;
+            this.isDragging = false;
+            this.eventRange = null;
+            this.relevantEvents = null;
+            this.receivingCalendar = null;
+            this.validMutation = null;
+            this.mutatedRelevantEvents = null;
+        };
+        EventDragging.SELECTOR = '.fc-draggable, .fc-resizable'; // TODO: test this in IE11
+        return EventDragging;
+    }(core.Interaction));
+    function computeEventMutation(hit0, hit1, massagers) {
+        var dateSpan0 = hit0.dateSpan;
+        var dateSpan1 = hit1.dateSpan;
+        var date0 = dateSpan0.range.start;
+        var date1 = dateSpan1.range.start;
+        var standardProps = {};
+        if (dateSpan0.allDay !== dateSpan1.allDay) {
+            standardProps.allDay = dateSpan1.allDay;
+            standardProps.hasEnd = hit1.component.opt('allDayMaintainDuration');
+            if (dateSpan1.allDay) {
+                // means date1 is already start-of-day,
+                // but date0 needs to be converted
+                date0 = core.startOfDay(date0);
+            }
+        }
+        var delta = core.diffDates(date0, date1, hit0.component.dateEnv, hit0.component === hit1.component ?
+            hit0.component.largeUnit :
+            null);
+        if (delta.milliseconds) { // has hours/minutes/seconds
+            standardProps.allDay = false;
+        }
+        var mutation = {
+            startDelta: delta,
+            endDelta: delta,
+            standardProps: standardProps
+        };
+        for (var _i = 0, massagers_1 = massagers; _i < massagers_1.length; _i++) {
+            var massager = massagers_1[_i];
+            massager(mutation, hit0, hit1);
+        }
+        return mutation;
+    }
+    function getComponentTouchDelay$1(component) {
+        var delay = component.opt('eventLongPressDelay');
+        if (delay == null) {
+            delay = component.opt('longPressDelay');
+        }
+        return delay;
+    }
+
+    var EventDragging$1 = /** @class */ (function (_super) {
+        __extends(EventDragging, _super);
+        function EventDragging(settings) {
+            var _this = _super.call(this, settings) || this;
+            // internal state
+            _this.draggingSeg = null; // TODO: rename to resizingSeg? subjectSeg?
+            _this.eventRange = null;
+            _this.relevantEvents = null;
+            _this.validMutation = null;
+            _this.mutatedRelevantEvents = null;
+            _this.handlePointerDown = function (ev) {
+                var component = _this.component;
+                var seg = _this.querySeg(ev);
+                var eventRange = _this.eventRange = seg.eventRange;
+                _this.dragging.minDistance = component.opt('eventDragMinDistance');
+                // if touch, need to be working with a selected event
+                _this.dragging.setIgnoreMove(!_this.component.isValidSegDownEl(ev.origEvent.target) ||
+                    (ev.isTouch && _this.component.props.eventSelection !== eventRange.instance.instanceId));
+            };
+            _this.handleDragStart = function (ev) {
+                var calendar = _this.component.calendar;
+                var eventRange = _this.eventRange;
+                _this.relevantEvents = core.getRelevantEvents(calendar.state.eventStore, _this.eventRange.instance.instanceId);
+                _this.draggingSeg = _this.querySeg(ev);
+                calendar.unselect();
+                calendar.publiclyTrigger('eventResizeStart', [
+                    {
+                        el: _this.draggingSeg.el,
+                        event: new core.EventApi(calendar, eventRange.def, eventRange.instance),
+                        jsEvent: ev.origEvent,
+                        view: _this.component.view
+                    }
+                ]);
+            };
+            _this.handleHitUpdate = function (hit, isFinal, ev) {
+                var calendar = _this.component.calendar;
+                var relevantEvents = _this.relevantEvents;
+                var initialHit = _this.hitDragging.initialHit;
+                var eventInstance = _this.eventRange.instance;
+                var mutation = null;
+                var mutatedRelevantEvents = null;
+                var isInvalid = false;
+                var interaction = {
+                    affectedEvents: relevantEvents,
+                    mutatedEvents: core.createEmptyEventStore(),
+                    isEvent: true,
+                    origSeg: _this.draggingSeg
+                };
+                if (hit) {
+                    mutation = computeMutation(initialHit, hit, ev.subjectEl.classList.contains('fc-start-resizer'), eventInstance.range, calendar.pluginSystem.hooks.eventResizeJoinTransforms);
+                }
+                if (mutation) {
+                    mutatedRelevantEvents = core.applyMutationToEventStore(relevantEvents, calendar.eventUiBases, mutation, calendar);
+                    interaction.mutatedEvents = mutatedRelevantEvents;
+                    if (!_this.component.isInteractionValid(interaction)) {
+                        isInvalid = true;
+                        mutation = null;
+                        mutatedRelevantEvents = null;
+                        interaction.mutatedEvents = null;
+                    }
+                }
+                if (mutatedRelevantEvents) {
+                    calendar.dispatch({
+                        type: 'SET_EVENT_RESIZE',
+                        state: interaction
+                    });
+                }
+                else {
+                    calendar.dispatch({ type: 'UNSET_EVENT_RESIZE' });
+                }
+                if (!isInvalid) {
+                    core.enableCursor();
+                }
+                else {
+                    core.disableCursor();
+                }
+                if (!isFinal) {
+                    if (mutation && isHitsEqual(initialHit, hit)) {
+                        mutation = null;
+                    }
+                    _this.validMutation = mutation;
+                    _this.mutatedRelevantEvents = mutatedRelevantEvents;
+                }
+            };
+            _this.handleDragEnd = function (ev) {
+                var calendar = _this.component.calendar;
+                var view = _this.component.view;
+                var eventDef = _this.eventRange.def;
+                var eventInstance = _this.eventRange.instance;
+                var eventApi = new core.EventApi(calendar, eventDef, eventInstance);
+                var relevantEvents = _this.relevantEvents;
+                var mutatedRelevantEvents = _this.mutatedRelevantEvents;
+                calendar.publiclyTrigger('eventResizeStop', [
+                    {
+                        el: _this.draggingSeg.el,
+                        event: eventApi,
+                        jsEvent: ev.origEvent,
+                        view: view
+                    }
+                ]);
+                if (_this.validMutation) {
+                    calendar.dispatch({
+                        type: 'MERGE_EVENTS',
+                        eventStore: mutatedRelevantEvents
+                    });
+                    calendar.publiclyTrigger('eventResize', [
+                        {
+                            el: _this.draggingSeg.el,
+                            startDelta: _this.validMutation.startDelta || core.createDuration(0),
+                            endDelta: _this.validMutation.endDelta || core.createDuration(0),
+                            prevEvent: eventApi,
+                            event: new core.EventApi(// the data AFTER the mutation
+                            calendar, mutatedRelevantEvents.defs[eventDef.defId], eventInstance ? mutatedRelevantEvents.instances[eventInstance.instanceId] : null),
+                            revert: function () {
+                                calendar.dispatch({
+                                    type: 'MERGE_EVENTS',
+                                    eventStore: relevantEvents
+                                });
+                            },
+                            jsEvent: ev.origEvent,
+                            view: view
+                        }
+                    ]);
+                }
+                else {
+                    calendar.publiclyTrigger('_noEventResize');
+                }
+                // reset all internal state
+                _this.draggingSeg = null;
+                _this.relevantEvents = null;
+                _this.validMutation = null;
+                // okay to keep eventInstance around. useful to set it in handlePointerDown
+            };
+            var component = settings.component;
+            var dragging = _this.dragging = new FeaturefulElementDragging(component.el);
+            dragging.pointer.selector = '.fc-resizer';
+            dragging.touchScrollAllowed = false;
+            dragging.autoScroller.isEnabled = component.opt('dragScroll');
+            var hitDragging = _this.hitDragging = new HitDragging(_this.dragging, core.interactionSettingsToStore(settings));
+            hitDragging.emitter.on('pointerdown', _this.handlePointerDown);
+            hitDragging.emitter.on('dragstart', _this.handleDragStart);
+            hitDragging.emitter.on('hitupdate', _this.handleHitUpdate);
+            hitDragging.emitter.on('dragend', _this.handleDragEnd);
+            return _this;
+        }
+        EventDragging.prototype.destroy = function () {
+            this.dragging.destroy();
+        };
+        EventDragging.prototype.querySeg = function (ev) {
+            return core.getElSeg(core.elementClosest(ev.subjectEl, this.component.fgSegSelector));
+        };
+        return EventDragging;
+    }(core.Interaction));
+    function computeMutation(hit0, hit1, isFromStart, instanceRange, transforms) {
+        var dateEnv = hit0.component.dateEnv;
+        var date0 = hit0.dateSpan.range.start;
+        var date1 = hit1.dateSpan.range.start;
+        var delta = core.diffDates(date0, date1, dateEnv, hit0.component.largeUnit);
+        var props = {};
+        for (var _i = 0, transforms_1 = transforms; _i < transforms_1.length; _i++) {
+            var transform = transforms_1[_i];
+            var res = transform(hit0, hit1);
+            if (res === false) {
+                return null;
+            }
+            else if (res) {
+                __assign(props, res);
+            }
+        }
+        if (isFromStart) {
+            if (dateEnv.add(instanceRange.start, delta) < instanceRange.end) {
+                props.startDelta = delta;
+                return props;
+            }
+        }
+        else {
+            if (dateEnv.add(instanceRange.end, delta) > instanceRange.start) {
+                props.endDelta = delta;
+                return props;
+            }
+        }
+        return null;
+    }
+
+    var UnselectAuto = /** @class */ (function () {
+        function UnselectAuto(calendar) {
+            var _this = this;
+            this.isRecentPointerDateSelect = false; // wish we could use a selector to detect date selection, but uses hit system
+            this.onSelect = function (selectInfo) {
+                if (selectInfo.jsEvent) {
+                    _this.isRecentPointerDateSelect = true;
+                }
+            };
+            this.onDocumentPointerUp = function (pev) {
+                var _a = _this, calendar = _a.calendar, documentPointer = _a.documentPointer;
+                var state = calendar.state;
+                // touch-scrolling should never unfocus any type of selection
+                if (!documentPointer.wasTouchScroll) {
+                    if (state.dateSelection && // an existing date selection?
+                        !_this.isRecentPointerDateSelect // a new pointer-initiated date selection since last onDocumentPointerUp?
+                    ) {
+                        var unselectAuto = calendar.viewOpt('unselectAuto');
+                        var unselectCancel = calendar.viewOpt('unselectCancel');
+                        if (unselectAuto && (!unselectAuto || !core.elementClosest(documentPointer.downEl, unselectCancel))) {
+                            calendar.unselect(pev);
+                        }
+                    }
+                    if (state.eventSelection && // an existing event selected?
+                        !core.elementClosest(documentPointer.downEl, EventDragging.SELECTOR) // interaction DIDN'T start on an event
+                    ) {
+                        calendar.dispatch({ type: 'UNSELECT_EVENT' });
+                    }
+                }
+                _this.isRecentPointerDateSelect = false;
+            };
+            this.calendar = calendar;
+            var documentPointer = this.documentPointer = new PointerDragging(document);
+            documentPointer.shouldIgnoreMove = true;
+            documentPointer.shouldWatchScroll = false;
+            documentPointer.emitter.on('pointerup', this.onDocumentPointerUp);
+            /*
+            TODO: better way to know about whether there was a selection with the pointer
+            */
+            calendar.on('select', this.onSelect);
+        }
+        UnselectAuto.prototype.destroy = function () {
+            this.calendar.off('select', this.onSelect);
+            this.documentPointer.destroy();
+        };
+        return UnselectAuto;
+    }());
+
+    /*
+    Given an already instantiated draggable object for one-or-more elements,
+    Interprets any dragging as an attempt to drag an events that lives outside
+    of a calendar onto a calendar.
+    */
+    var ExternalElementDragging = /** @class */ (function () {
+        function ExternalElementDragging(dragging, suppliedDragMeta) {
+            var _this = this;
+            this.receivingCalendar = null;
+            this.droppableEvent = null; // will exist for all drags, even if create:false
+            this.suppliedDragMeta = null;
+            this.dragMeta = null;
+            this.handleDragStart = function (ev) {
+                _this.dragMeta = _this.buildDragMeta(ev.subjectEl);
+            };
+            this.handleHitUpdate = function (hit, isFinal, ev) {
+                var dragging = _this.hitDragging.dragging;
+                var receivingCalendar = null;
+                var droppableEvent = null;
+                var isInvalid = false;
+                var interaction = {
+                    affectedEvents: core.createEmptyEventStore(),
+                    mutatedEvents: core.createEmptyEventStore(),
+                    isEvent: _this.dragMeta.create,
+                    origSeg: null
+                };
+                if (hit) {
+                    receivingCalendar = hit.component.calendar;
+                    if (_this.canDropElOnCalendar(ev.subjectEl, receivingCalendar)) {
+                        droppableEvent = computeEventForDateSpan(hit.dateSpan, _this.dragMeta, receivingCalendar);
+                        interaction.mutatedEvents = core.eventTupleToStore(droppableEvent);
+                        isInvalid = !core.isInteractionValid(interaction, receivingCalendar);
+                        if (isInvalid) {
+                            interaction.mutatedEvents = core.createEmptyEventStore();
+                            droppableEvent = null;
+                        }
+                    }
+                }
+                _this.displayDrag(receivingCalendar, interaction);
+                // show mirror if no already-rendered mirror element OR if we are shutting down the mirror (?)
+                // TODO: wish we could somehow wait for dispatch to guarantee render
+                dragging.setMirrorIsVisible(isFinal || !droppableEvent || !document.querySelector('.fc-mirror'));
+                if (!isInvalid) {
+                    core.enableCursor();
+                }
+                else {
+                    core.disableCursor();
+                }
+                if (!isFinal) {
+                    dragging.setMirrorNeedsRevert(!droppableEvent);
+                    _this.receivingCalendar = receivingCalendar;
+                    _this.droppableEvent = droppableEvent;
+                }
+            };
+            this.handleDragEnd = function (pev) {
+                var _a = _this, receivingCalendar = _a.receivingCalendar, droppableEvent = _a.droppableEvent;
+                _this.clearDrag();
+                if (receivingCalendar && droppableEvent) {
+                    var finalHit = _this.hitDragging.finalHit;
+                    var finalView = finalHit.component.view;
+                    var dragMeta = _this.dragMeta;
+                    var arg = receivingCalendar.buildDatePointApi(finalHit.dateSpan);
+                    arg.draggedEl = pev.subjectEl;
+                    arg.jsEvent = pev.origEvent;
+                    arg.view = finalView;
+                    receivingCalendar.publiclyTrigger('drop', [arg]);
+                    if (dragMeta.create) {
+                        receivingCalendar.dispatch({
+                            type: 'MERGE_EVENTS',
+                            eventStore: core.eventTupleToStore(droppableEvent)
+                        });
+                        if (pev.isTouch) {
+                            receivingCalendar.dispatch({
+                                type: 'SELECT_EVENT',
+                                eventInstanceId: droppableEvent.instance.instanceId
+                            });
+                        }
+                        // signal that an external event landed
+                        receivingCalendar.publiclyTrigger('eventReceive', [
+                            {
+                                draggedEl: pev.subjectEl,
+                                event: new core.EventApi(receivingCalendar, droppableEvent.def, droppableEvent.instance),
+                                view: finalView
+                            }
+                        ]);
+                    }
+                }
+                _this.receivingCalendar = null;
+                _this.droppableEvent = null;
+            };
+            var hitDragging = this.hitDragging = new HitDragging(dragging, core.interactionSettingsStore);
+            hitDragging.requireInitial = false; // will start outside of a component
+            hitDragging.emitter.on('dragstart', this.handleDragStart);
+            hitDragging.emitter.on('hitupdate', this.handleHitUpdate);
+            hitDragging.emitter.on('dragend', this.handleDragEnd);
+            this.suppliedDragMeta = suppliedDragMeta;
+        }
+        ExternalElementDragging.prototype.buildDragMeta = function (subjectEl) {
+            if (typeof this.suppliedDragMeta === 'object') {
+                return core.parseDragMeta(this.suppliedDragMeta);
+            }
+            else if (typeof this.suppliedDragMeta === 'function') {
+                return core.parseDragMeta(this.suppliedDragMeta(subjectEl));
+            }
+            else {
+                return getDragMetaFromEl(subjectEl);
+            }
+        };
+        ExternalElementDragging.prototype.displayDrag = function (nextCalendar, state) {
+            var prevCalendar = this.receivingCalendar;
+            if (prevCalendar && prevCalendar !== nextCalendar) {
+                prevCalendar.dispatch({ type: 'UNSET_EVENT_DRAG' });
+            }
+            if (nextCalendar) {
+                nextCalendar.dispatch({ type: 'SET_EVENT_DRAG', state: state });
+            }
+        };
+        ExternalElementDragging.prototype.clearDrag = function () {
+            if (this.receivingCalendar) {
+                this.receivingCalendar.dispatch({ type: 'UNSET_EVENT_DRAG' });
+            }
+        };
+        ExternalElementDragging.prototype.canDropElOnCalendar = function (el, receivingCalendar) {
+            var dropAccept = receivingCalendar.opt('dropAccept');
+            if (typeof dropAccept === 'function') {
+                return dropAccept(el);
+            }
+            else if (typeof dropAccept === 'string' && dropAccept) {
+                return Boolean(core.elementMatches(el, dropAccept));
+            }
+            return true;
+        };
+        return ExternalElementDragging;
+    }());
+    // Utils for computing event store from the DragMeta
+    // ----------------------------------------------------------------------------------------------------
+    function computeEventForDateSpan(dateSpan, dragMeta, calendar) {
+        var defProps = __assign({}, dragMeta.leftoverProps);
+        for (var _i = 0, _a = calendar.pluginSystem.hooks.externalDefTransforms; _i < _a.length; _i++) {
+            var transform = _a[_i];
+            __assign(defProps, transform(dateSpan, dragMeta));
+        }
+        var def = core.parseEventDef(defProps, dragMeta.sourceId, dateSpan.allDay, calendar.opt('forceEventDuration') || Boolean(dragMeta.duration), // hasEnd
+        calendar);
+        var start = dateSpan.range.start;
+        // only rely on time info if drop zone is all-day,
+        // otherwise, we already know the time
+        if (dateSpan.allDay && dragMeta.startTime) {
+            start = calendar.dateEnv.add(start, dragMeta.startTime);
+        }
+        var end = dragMeta.duration ?
+            calendar.dateEnv.add(start, dragMeta.duration) :
+            calendar.getDefaultEventEnd(dateSpan.allDay, start);
+        var instance = core.createEventInstance(def.defId, { start: start, end: end });
+        return { def: def, instance: instance };
+    }
+    // Utils for extracting data from element
+    // ----------------------------------------------------------------------------------------------------
+    function getDragMetaFromEl(el) {
+        var str = getEmbeddedElData(el, 'event');
+        var obj = str ?
+            JSON.parse(str) :
+            { create: false }; // if no embedded data, assume no event creation
+        return core.parseDragMeta(obj);
+    }
+    core.config.dataAttrPrefix = '';
+    function getEmbeddedElData(el, name) {
+        var prefix = core.config.dataAttrPrefix;
+        var prefixedName = (prefix ? prefix + '-' : '') + name;
+        return el.getAttribute('data-' + prefixedName) || '';
+    }
+
+    /*
+    Makes an element (that is *external* to any calendar) draggable.
+    Can pass in data that determines how an event will be created when dropped onto a calendar.
+    Leverages FullCalendar's internal drag-n-drop functionality WITHOUT a third-party drag system.
+    */
+    var ExternalDraggable = /** @class */ (function () {
+        function ExternalDraggable(el, settings) {
+            var _this = this;
+            if (settings === void 0) { settings = {}; }
+            this.handlePointerDown = function (ev) {
+                var dragging = _this.dragging;
+                var _a = _this.settings, minDistance = _a.minDistance, longPressDelay = _a.longPressDelay;
+                dragging.minDistance =
+                    minDistance != null ?
+                        minDistance :
+                        (ev.isTouch ? 0 : core.globalDefaults.eventDragMinDistance);
+                dragging.delay =
+                    ev.isTouch ? // TODO: eventually read eventLongPressDelay instead vvv
+                        (longPressDelay != null ? longPressDelay : core.globalDefaults.longPressDelay) :
+                        0;
+            };
+            this.handleDragStart = function (ev) {
+                if (ev.isTouch &&
+                    _this.dragging.delay &&
+                    ev.subjectEl.classList.contains('fc-event')) {
+                    _this.dragging.mirror.getMirrorEl().classList.add('fc-selected');
+                }
+            };
+            this.settings = settings;
+            var dragging = this.dragging = new FeaturefulElementDragging(el);
+            dragging.touchScrollAllowed = false;
+            if (settings.itemSelector != null) {
+                dragging.pointer.selector = settings.itemSelector;
+            }
+            if (settings.appendTo != null) {
+                dragging.mirror.parentNode = settings.appendTo; // TODO: write tests
+            }
+            dragging.emitter.on('pointerdown', this.handlePointerDown);
+            dragging.emitter.on('dragstart', this.handleDragStart);
+            new ExternalElementDragging(dragging, settings.eventData);
+        }
+        ExternalDraggable.prototype.destroy = function () {
+            this.dragging.destroy();
+        };
+        return ExternalDraggable;
+    }());
+
+    /*
+    Detects when a *THIRD-PARTY* drag-n-drop system interacts with elements.
+    The third-party system is responsible for drawing the visuals effects of the drag.
+    This class simply monitors for pointer movements and fires events.
+    It also has the ability to hide the moving element (the "mirror") during the drag.
+    */
+    var InferredElementDragging = /** @class */ (function (_super) {
+        __extends(InferredElementDragging, _super);
+        function InferredElementDragging(containerEl) {
+            var _this = _super.call(this, containerEl) || this;
+            _this.shouldIgnoreMove = false;
+            _this.mirrorSelector = '';
+            _this.currentMirrorEl = null;
+            _this.handlePointerDown = function (ev) {
+                _this.emitter.trigger('pointerdown', ev);
+                if (!_this.shouldIgnoreMove) {
+                    // fire dragstart right away. does not support delay or min-distance
+                    _this.emitter.trigger('dragstart', ev);
+                }
+            };
+            _this.handlePointerMove = function (ev) {
+                if (!_this.shouldIgnoreMove) {
+                    _this.emitter.trigger('dragmove', ev);
+                }
+            };
+            _this.handlePointerUp = function (ev) {
+                _this.emitter.trigger('pointerup', ev);
+                if (!_this.shouldIgnoreMove) {
+                    // fire dragend right away. does not support a revert animation
+                    _this.emitter.trigger('dragend', ev);
+                }
+            };
+            var pointer = _this.pointer = new PointerDragging(containerEl);
+            pointer.emitter.on('pointerdown', _this.handlePointerDown);
+            pointer.emitter.on('pointermove', _this.handlePointerMove);
+            pointer.emitter.on('pointerup', _this.handlePointerUp);
+            return _this;
+        }
+        InferredElementDragging.prototype.destroy = function () {
+            this.pointer.destroy();
+        };
+        InferredElementDragging.prototype.setIgnoreMove = function (bool) {
+            this.shouldIgnoreMove = bool;
+        };
+        InferredElementDragging.prototype.setMirrorIsVisible = function (bool) {
+            if (bool) {
+                // restore a previously hidden element.
+                // use the reference in case the selector class has already been removed.
+                if (this.currentMirrorEl) {
+                    this.currentMirrorEl.style.visibility = '';
+                    this.currentMirrorEl = null;
+                }
+            }
+            else {
+                var mirrorEl = this.mirrorSelector ?
+                    document.querySelector(this.mirrorSelector) :
+                    null;
+                if (mirrorEl) {
+                    this.currentMirrorEl = mirrorEl;
+                    mirrorEl.style.visibility = 'hidden';
+                }
+            }
+        };
+        return InferredElementDragging;
+    }(core.ElementDragging));
+
+    /*
+    Bridges third-party drag-n-drop systems with FullCalendar.
+    Must be instantiated and destroyed by caller.
+    */
+    var ThirdPartyDraggable = /** @class */ (function () {
+        function ThirdPartyDraggable(containerOrSettings, settings) {
+            var containerEl = document;
+            if (
+            // wish we could just test instanceof EventTarget, but doesn't work in IE11
+            containerOrSettings === document ||
+                containerOrSettings instanceof Element) {
+                containerEl = containerOrSettings;
+                settings = settings || {};
+            }
+            else {
+                settings = (containerOrSettings || {});
+            }
+            var dragging = this.dragging = new InferredElementDragging(containerEl);
+            if (typeof settings.itemSelector === 'string') {
+                dragging.pointer.selector = settings.itemSelector;
+            }
+            else if (containerEl === document) {
+                dragging.pointer.selector = '[data-event]';
+            }
+            if (typeof settings.mirrorSelector === 'string') {
+                dragging.mirrorSelector = settings.mirrorSelector;
+            }
+            new ExternalElementDragging(dragging, settings.eventData);
+        }
+        ThirdPartyDraggable.prototype.destroy = function () {
+            this.dragging.destroy();
+        };
+        return ThirdPartyDraggable;
+    }());
+
+    var main = core.createPlugin({
+        componentInteractions: [DateClicking, DateSelecting, EventDragging, EventDragging$1],
+        calendarInteractions: [UnselectAuto],
+        elementDraggingImpl: FeaturefulElementDragging
+    });
+
+    exports.Draggable = ExternalDraggable;
+    exports.FeaturefulElementDragging = FeaturefulElementDragging;
+    exports.PointerDragging = PointerDragging;
+    exports.ThirdPartyDraggable = ThirdPartyDraggable;
+    exports.default = main;
+
+    Object.defineProperty(exports, '__esModule', { value: true });
+
+}));