moodle_local_treestudyplan/amd/src/vue-easy-dnd/vue-easy-dnd.esm.js

/* eslint-disable */
import './reflect-metadata';
import { Vue, Component, Prop } from './vue-property-decorator';

/*! *****************************************************************************
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);
};

function __decorate(decorators, target, key, desc) {
    var c = arguments.length, r = c < 3 ? target : desc === null ? desc = Object.getOwnPropertyDescriptor(target, key) : desc, d;
    if (typeof Reflect === "object" && typeof Reflect.decorate === "function") r = Reflect.decorate(decorators, target, key, desc);
    else for (var i = decorators.length - 1; i >= 0; i--) if (d = decorators[i]) r = (c < 3 ? d(r) : c > 3 ? d(target, key, r) : d(target, key)) || r;
    return c > 3 && r && Object.defineProperty(target, key, r), r;
}

function __metadata(metadataKey, metadataValue) {
    if (typeof Reflect === "object" && typeof Reflect.metadata === "function") return Reflect.metadata(metadataKey, metadataValue);
}

function __values(o) {
    var m = typeof Symbol === "function" && o[Symbol.iterator], i = 0;
    if (m) return m.call(o);
    return {
        next: function () {
            if (o && i >= o.length) o = void 0;
            return { value: o && o[i++], done: !o };
        }
    };
}

function __read(o, n) {
    var m = typeof Symbol === "function" && o[Symbol.iterator];
    if (!m) return o;
    var i = m.call(o), r, ar = [], e;
    try {
        while ((n === void 0 || n-- > 0) && !(r = i.next()).done) ar.push(r.value);
    }
    catch (error) { e = { error: error }; }
    finally {
        try {
            if (r && !r.done && (m = i["return"])) m.call(i);
        }
        finally { if (e) throw e.error; }
    }
    return ar;
}

function __spread() {
    for (var ar = [], i = 0; i < arguments.length; i++)
        ar = ar.concat(__read(arguments[i]));
    return ar;
}

/**
 * This is the class of the global object that holds the state of the drag and drop during its progress. It emits events
 * reporting its state evolution during the progress of the drag and drop. Its data is reactive and listeners can be
 * attachted to it using the method on.
 */
var DnD = /** @class */ (function () {
    function DnD() {
        this.inProgress = false;
        this.type = null;
        this.data = null;
        this.source = null;
        this.top = null;
        this.position = null;
        this.eventBus = new Vue();
        this.sourceListeners = null;
        this.success = null;
    }
    DnD.prototype.startDrag = function (source, event, x, y, type, data) {
        this.type = type;
        this.data = data;
        this.source = source;
        this.position = { x: x, y: y };
        this.top = null;
        this.sourceListeners = source.$listeners;
        this.inProgress = true;
        this.emit(event, "dragstart");
        this.emit(event, "dragtopchanged", { previousTop: null });
    };
    DnD.prototype.resetVariables = function () {
        this.inProgress = false;
        this.data = null;
        this.source = null;
        this.position = null;
        this.success = null;
    };
    DnD.prototype.stopDrag = function (event) {
        this.success = this.top !== null && this.top['compatibleMode'] && this.top['dropAllowed'];
        if (this.top !== null) {
            this.emit(event, "drop");
        }
        this.emit(event, "dragend");
        this.resetVariables();
    };
    DnD.prototype.cancelDrag = function (event) {
        this.success = false;
        this.emit(event, "dragend");
        this.resetVariables();
    };
    DnD.prototype.mouseMove = function (event, comp) {
        if (this.inProgress) {
            var prevent = false;
            var previousTop = this.top;
            if (comp === null) {
                // The mouse move event reached the top of the document without hitting a drop component.
                this.top = null;
                prevent = true;
            }
            else if (comp['isDropMask']) {
                // The mouse move event bubbled until it reached a drop mask.
                this.top = null;
                prevent = true;
            }
            else if (comp['candidate'](this.type, this.data, this.source)) {
                // The mouse move event bubbled until it reached a drop component that participates in the current drag operation.
                this.top = comp;
                prevent = true;
            }
            if (prevent) {
                // We prevent the mouse move event from bubbling further up the tree because it reached the foremost drop component and that component is all that matters.
                event.stopPropagation();
            }
            if (this.top !== previousTop) {
                this.emit(event.detail.native, 'dragtopchanged', { previousTop: previousTop });
            }
            this.position = {
                x: event.detail.x,
                y: event.detail.y
            };
            this.emit(event.detail.native, 'dragpositionchanged');
        }
    };
    DnD.prototype.emit = function (native, event, data) {
        this.eventBus.$emit(event, __assign({ type: this.type, data: this.data, top: this.top, source: this.source, position: this.position, success: this.success, native: native }, data));
    };
    DnD.prototype.on = function (event, callback) {
        this.eventBus.$on(event, callback);
    };
    DnD.prototype.off = function (event, callback) {
        this.eventBus.$off(event, callback);
    };
    return DnD;
}());
var dnd = new DnD();
dnd = Vue.observable(dnd);

var DragAwareMixin = /** @class */ (function (_super) {
    __extends(DragAwareMixin, _super);
    function DragAwareMixin() {
        return _super !== null && _super.apply(this, arguments) || this;
    }
    Object.defineProperty(DragAwareMixin.prototype, "dragInProgress", {
        get: function () {
            return dnd.inProgress;
        },
        enumerable: true,
        configurable: true
    });
    Object.defineProperty(DragAwareMixin.prototype, "dragData", {
        get: function () {
            return dnd.data;
        },
        enumerable: true,
        configurable: true
    });
    Object.defineProperty(DragAwareMixin.prototype, "dragType", {
        get: function () {
            return dnd.type;
        },
        enumerable: true,
        configurable: true
    });
    Object.defineProperty(DragAwareMixin.prototype, "dragPosition", {
        get: function () {
            return dnd.position;
        },
        enumerable: true,
        configurable: true
    });
    Object.defineProperty(DragAwareMixin.prototype, "dragSource", {
        get: function () {
            return dnd.source;
        },
        enumerable: true,
        configurable: true
    });
    Object.defineProperty(DragAwareMixin.prototype, "dragTop", {
        get: function () {
            return dnd.top;
        },
        enumerable: true,
        configurable: true
    });
    DragAwareMixin = __decorate([
        Component({})
    ], DragAwareMixin);
    return DragAwareMixin;
}(Vue));

/**
 * This files contains the primitives required to create drag images from HTML elements that serve as models. A snapshot
 * of the computed styles of the model elements is taken when creating the drag image, so that it will look the same as
 * the model, no matter where the drag images is grafted into the DOM.
 */
/**
 * Creates a drag image using the given element as model.
 */
function createDragImage(el) {
    var clone = deepClone(el);
    clone.style.position = 'fixed';
    clone.style.margin = '0';
    clone.style["z-index"] = '1000';
    clone.style.transition = 'opacity 0.2s';
    return clone;
}
/**
 * Clones the given element and all its descendants.
 */
function deepClone(el) {
    var clone = el.cloneNode(true);
    copyStyle(el, clone);
    var vSrcElements = el.getElementsByTagName("*");
    var vDstElements = clone.getElementsByTagName("*");
    for (var i = vSrcElements.length; i--;) {
        var vSrcElement = vSrcElements[i];
        var vDstElement = vDstElements[i];
        copyStyle(vSrcElement, vDstElement);
    }
    return clone;
}
/**
 * Copy the computed styles from src to destination.
 */
function copyStyle(src, destination) {
    var e_1, _a;
    var computedStyle = window.getComputedStyle(src);
    try {
        for (var computedStyle_1 = __values(computedStyle), computedStyle_1_1 = computedStyle_1.next(); !computedStyle_1_1.done; computedStyle_1_1 = computedStyle_1.next()) {
            var key = computedStyle_1_1.value;
            if (key === 'width') {
                // IE11
                var width = computedStyle.getPropertyValue("box-sizing") === 'border-box' ?
                    src.clientWidth :
                    src.clientWidth - parseFloat(computedStyle.paddingLeft) - parseFloat(computedStyle.paddingRight);
                destination.style.setProperty("width", width + "px");
            }
            else if (key === 'height') {
                // IE11
                var height = computedStyle.getPropertyValue("box-sizing") === 'border-box' ?
                    src.clientHeight :
                    src.clientHeight - parseFloat(computedStyle.paddingTop) - parseFloat(computedStyle.paddingBottom);
                destination.style.setProperty("height", height + "px");
            }
            else {
                destination.style.setProperty(key, computedStyle.getPropertyValue(key), computedStyle.getPropertyPriority(key));
            }
        }
    }
    catch (e_1_1) { e_1 = { error: e_1_1 }; }
    finally {
        try {
            if (computedStyle_1_1 && !computedStyle_1_1.done && (_a = computedStyle_1.return)) { _a.call(computedStyle_1); }
        }
        finally { if (e_1) { throw e_1.error; } }
    }
    destination.style.pointerEvents = 'none';
}

// Forked from https://gist.github.com/gre/296291b8ce0d8fe6e1c3ea4f1d1c5c3b
var regex = /(auto|scroll)/;

var style = function (node, prop) { return getComputedStyle(node, null).getPropertyValue(prop); };

var scroll = function (node) { return regex.test(
    style(node, "overflow") +
    style(node, "overflow-y") +
    style(node, "overflow-x")); };

var scrollparent = function (node) { return !node || node===document.body
    ? document.body
    : scroll(node)
      ? node
      : scrollparent(node.parentNode); };

// Forked from https://github.com/bennadel/JavaScript-Demos/blob/master/demos/window-edge-scrolling/index.htm
// Code was altered to work with scrollable containers

var timer = null;

function cancelScrollAction () {
  clearTimeout(timer);
}

function performEdgeScroll(event, container, clientX, clientY, edgeSize) {
  if (!container || !edgeSize) {
    cancelScrollAction();
    return false;
  }

  // NOTE: Much of the information here, with regard to document dimensions,
  // viewport dimensions, and window scrolling is derived from JavaScript.info.
  // I am consuming it here primarily as NOTE TO SELF.
  // --
  // Read More: https://javascript.info/size-and-scroll-window
  // --
  // CAUTION: The viewport and document dimensions can all be CACHED and then
  // recalculated on window-resize events (for the most part). I am keeping it
  // all here in the mousemove event handler to remove as many of the moving
  // parts as possible and keep the demo as simple as possible.

  // Get the viewport-relative coordinates of the mousemove event.
  var rect = container.getBoundingClientRect();
  var isBody = container === document.body;

  var viewportX = clientX - rect.left;
  var viewportY = clientY - rect.top;
  if (isBody) {
    viewportX = clientX;
    viewportY = clientY;
  }

  // Get the viewport dimensions.
  var viewportWidth = rect.width;
  var viewportHeight = rect.height;
  if (isBody) {
    viewportWidth = document.documentElement.clientWidth;
    viewportHeight = document.documentElement.clientHeight;
  }

  // Next, we need to determine if the mouse is within the "edge" of the
  // viewport, which may require scrolling the window. To do this, we need to
  // calculate the boundaries of the edge in the viewport (these coordinates
  // are relative to the viewport grid system).
  var edgeTop = edgeSize;
  var edgeLeft = edgeSize;
  var edgeBottom = ( viewportHeight - edgeSize );
  var edgeRight = ( viewportWidth - edgeSize );

  var isInLeftEdge = ( viewportX < edgeLeft );
  var isInRightEdge = ( viewportX > edgeRight );
  var isInTopEdge = ( viewportY < edgeTop );
  var isInBottomEdge = ( viewportY > edgeBottom );

  // If the mouse is not in the viewport edge, there's no need to calculate
  // anything else.
  if (!(isInLeftEdge || isInRightEdge || isInTopEdge || isInBottomEdge)) {
    cancelScrollAction();
    return false;
  }

  // If we made it this far, the user's mouse is located within the edge of the
  // viewport. As such, we need to check to see if scrolling needs to be done.

  // Get the document dimensions.
  var documentWidth = Math.max(
    container.scrollWidth,
    container.offsetWidth,
    container.clientWidth
  );
  var documentHeight = Math.max(
    container.scrollHeight,
    container.offsetHeight,
    container.clientHeight
  );

  // Calculate the maximum scroll offset in each direction. Since you can only
  // scroll the overflow portion of the document, the maximum represents the
  // length of the document that is NOT in the viewport.
  var maxScrollX = (documentWidth - viewportWidth);
  var maxScrollY = (documentHeight - viewportHeight);

  // As we examine the mousemove event, we want to adjust the window scroll in
  // immediate response to the event; but, we also want to continue adjusting
  // the window scroll if the user rests their mouse in the edge boundary. To
  // do this, we'll invoke the adjustment logic immediately. Then, we'll setup
  // a timer that continues to invoke the adjustment logic while the window can
  // still be scrolled in a particular direction.
  (function checkForWindowScroll() {
    cancelScrollAction();

    if (adjustWindowScroll()) {
      timer = setTimeout( checkForWindowScroll, 30 );
    }
  })();

  // Adjust the window scroll based on the user's mouse position. Returns True
  // or False depending on whether or not the window scroll was changed.
  function adjustWindowScroll() {
    // Get the current scroll position of the document.
    var currentScrollX = container.scrollLeft;
    var currentScrollY = container.scrollTop;
    if (isBody) {
      currentScrollX = window.pageXOffset;
      currentScrollY = window.pageYOffset;
    }

    // Determine if the window can be scrolled in any particular direction.
    var canScrollUp = (currentScrollY > 0);
    var canScrollDown = (currentScrollY < maxScrollY);
    var canScrollLeft = (currentScrollX > 0);
    var canScrollRight = (currentScrollX < maxScrollX);

    // Since we can potentially scroll in two directions at the same time,
    // let's keep track of the next scroll, starting with the current scroll.
    // Each of these values can then be adjusted independently in the logic
    // below.
    var nextScrollX = currentScrollX;
    var nextScrollY = currentScrollY;

    // As we examine the mouse position within the edge, we want to make the
    // incremental scroll changes more "intense" the closer that the user
    // gets the viewport edge. As such, we'll calculate the percentage that
    // the user has made it "through the edge" when calculating the delta.
    // Then, that use that percentage to back-off from the "max" step value.
    var maxStep = 50;

    // Should we scroll left?
    if (isInLeftEdge && canScrollLeft) {
      var intensity = ((edgeLeft - viewportX) / edgeSize);
      nextScrollX = (nextScrollX - (maxStep * intensity));
    }
    // Should we scroll right?
    else if (isInRightEdge && canScrollRight) {
      var intensity = ((viewportX - edgeRight) / edgeSize);
      nextScrollX = (nextScrollX + (maxStep * intensity));
    }

    // Should we scroll up?
    if (isInTopEdge && canScrollUp) {
      var intensity = ((edgeTop - viewportY) / edgeSize);
      nextScrollY = (nextScrollY - (maxStep * intensity));
    }
    // Should we scroll down?
    else if (isInBottomEdge && canScrollDown) {
      var intensity = ((viewportY - edgeBottom) / edgeSize);
      nextScrollY = (nextScrollY + (maxStep * intensity));
    }

    // Sanitize invalid maximums. An invalid scroll offset won't break the
    // subsequent .scrollTo() call; however, it will make it harder to
    // determine if the .scrollTo() method should have been called in the
    // first place.
    nextScrollX = Math.max(0, Math.min(maxScrollX, nextScrollX));
    nextScrollY = Math.max(0, Math.min(maxScrollY, nextScrollY));

    if (
      (nextScrollX !== currentScrollX) ||
      (nextScrollY !== currentScrollY)
    ) {
      (isBody ? window : container).scrollTo(nextScrollX, nextScrollY);
      return true;
    }
    else {
      return false;
    }
  }

  return true
}

var DragMixin = /** @class */ (function (_super) {
    __extends(DragMixin, _super);
    function DragMixin() {
        var _this = _super !== null && _super.apply(this, arguments) || this;
        _this.dragInitialised = false;
        _this.dragStarted = false;
        _this.ignoreNextClick = false;
        _this.initialUserSelect = null;
        _this.downEvent = null;
        _this.startPosition = null;
        _this.delayTimer = null;
        _this.scrollContainer = null;
        return _this;
    }
    DragMixin.prototype.onSelectStart = function (e) {
        e.stopPropagation();
        e.preventDefault();
    };
    DragMixin.prototype.performVibration = function () {
        // If browser can perform vibration and user has defined a vibration, perform it
        if (this.vibration > 0 && window.navigator && window.navigator.vibrate) {
            window.navigator.vibrate(this.vibration);
        }
    };
    DragMixin.prototype.onMouseDown = function (e) {
        var _this = this;
        var target;
        var goodButton;
        if (e.type === 'mousedown') {
            var mouse = e;
            target = e.target;
            goodButton = mouse.buttons === 1;
        }
        else {
            var touch = e;
            target = touch.touches[0].target;
            goodButton = true;
        }
        if (this.disabled || this.downEvent !== null || !goodButton) {
            return;
        }
        // Check that the target element is eligible for starting a drag
        // Includes checking against the handle selector
        //   or whether the element contains 'dnd-no-drag' class (which should disable dragging from that
        //   sub-element of a draggable parent)
        var goodTarget = !target.matches('.dnd-no-drag, .dnd-no-drag *') &&
            (!this.handle ||
                target.matches(this.handle + ', ' + this.handle + ' *'));
        if (!goodTarget) {
            return;
        }
        this.scrollContainer = scrollparent(target);
        this.initialUserSelect = document.body.style.userSelect;
        document.documentElement.style.userSelect = 'none'; // Permet au drag de se poursuivre normalement même
        // quand on quitte un élémént avec overflow: hidden.
        this.dragStarted = false;
        this.downEvent = e;
        if (this.downEvent.type === 'mousedown') {
            var mouse = event;
            this.startPosition = {
                x: mouse.clientX,
                y: mouse.clientY
            };
        }
        else {
            var touch = event;
            this.startPosition = {
                x: touch.touches[0].clientX,
                y: touch.touches[0].clientY
            };
        }
        if (!!this.delay) {
            this.dragInitialised = false;
            clearTimeout(this.delayTimer);
            this.delayTimer = setTimeout(function () {
                _this.dragInitialised = true;
                _this.performVibration();
            }, this.delay);
        }
        else {
            this.dragInitialised = true;
            this.performVibration();
        }
        document.addEventListener('click', this.onMouseClick, true);
        document.addEventListener('mouseup', this.onMouseUp);
        document.addEventListener('touchend', this.onMouseUp);
        document.addEventListener('selectstart', this.onSelectStart);
        document.addEventListener('keyup', this.onKeyUp);
        setTimeout(function () {
            document.addEventListener('mousemove', _this.onMouseMove);
            document.addEventListener('touchmove', _this.onMouseMove, { passive: false });
            document.addEventListener('easy-dnd-move', _this.onEasyDnDMove);
        }, 0);
        // Prevents event from bubbling to ancestor drag components and initiate several drags at the same time
        e.stopPropagation();
    };
    // Prevent the user from accidentally causing a click event
    // if they have just attempted a drag event
    DragMixin.prototype.onMouseClick = function (e) {
        if (this.ignoreNextClick) {
            e.preventDefault();
            e.stopPropagation && e.stopPropagation();
            e.stopImmediatePropagation && e.stopImmediatePropagation();
            this.ignoreNextClick = false;
            return false;
        }
    };
    DragMixin.prototype.onMouseMove = function (e) {
        // We ignore the mousemove event that follows touchend :
        if (this.downEvent === null)
            { return; }
        // On touch devices, we ignore fake mouse events and deal with touch events only.
        if (this.downEvent.type === 'touchstart' && e.type === 'mousemove')
            { return; }
        // Find out event target and pointer position :
        var target;
        var x;
        var y;
        if (e.type === 'touchmove') {
            var touch = e;
            x = touch.touches[0].clientX;
            y = touch.touches[0].clientY;
            target = document.elementFromPoint(x, y);
            if (!target) {
                // Mouse going off screen. Ignore event.
                return;
            }
        }
        else {
            var mouse = e;
            x = mouse.clientX;
            y = mouse.clientY;
            target = mouse.target;
        }
        // Distance between current event and start position :
        var dist = Math.sqrt(Math.pow(this.startPosition.x - x, 2) + Math.pow(this.startPosition.y - y, 2));
        // If the drag has not begun yet and distance from initial point is greater than delta, we start the drag :
        if (!this.dragStarted && dist > this.delta) {
            // If they have dragged greater than the delta before the delay period has ended,
            // It means that they attempted to perform another action (such as scrolling) on the page
            if (!this.dragInitialised) {
                clearTimeout(this.delayTimer);
            }
            else {
                this.ignoreNextClick = true;
                this.dragStarted = true;
                dnd.startDrag(this, this.downEvent, this.startPosition.x, this.startPosition.y, this.type, this.data);
                document.documentElement.classList.add('drag-in-progress');
            }
        }
        // Dispatch custom easy-dnd-move event :
        if (this.dragStarted) {
            // If cursor/touch is at edge of container, perform scroll if available
            // If this.dragTop is defined, it means they are dragging on top of another DropList/EasyDnd component
            // if dropTop is a DropList, use the scrollingEdgeSize of that container if it exists, otherwise use the scrollingEdgeSize of the Drag component
            var currEdgeSize = this.dragTop && this.dragTop.$props.scrollingEdgeSize !== undefined ?
                this.dragTop.$props.scrollingEdgeSize :
                this.scrollingEdgeSize;
            if (!!currEdgeSize) {
                var currScrollContainer = this.dragTop ? scrollparent(this.dragTop.$el) : this.scrollContainer;
                performEdgeScroll(e, currScrollContainer, x, y, currEdgeSize);
            }
            else {
                cancelScrollAction();
            }
            var custom = new CustomEvent("easy-dnd-move", {
                bubbles: true,
                cancelable: true,
                detail: {
                    x: x,
                    y: y,
                    native: e
                }
            });
            target.dispatchEvent(custom);
        }
        // Prevent scroll on touch devices if they were performing a drag
        if (this.dragInitialised && e.cancelable) {
            e.preventDefault();
        }
    };
    DragMixin.prototype.onEasyDnDMove = function (e) {
        dnd.mouseMove(e, null);
    };
    DragMixin.prototype.onMouseUp = function (e) {
        var _this = this;
        // On touch devices, we ignore fake mouse events and deal with touch events only.
        if (this.downEvent.type === 'touchstart' && e.type === 'mouseup')
            { return; }
        // This delay makes sure that when the click event that results from the mouseup is produced, the drag is
        // still in progress. So by checking the flag dnd.inProgress, one can tell apart true clicks from drag and
        // drop artefacts.
        setTimeout(function () {
            _this.cancelDragActions();
            if (_this.dragStarted) {
                dnd.stopDrag(e);
            }
            _this.finishDrag();
        }, 0);
    };
    DragMixin.prototype.onKeyUp = function (e) {
        var _this = this;
        // If ESC is pressed, cancel the drag
        if (e.key === 'Escape') {
            this.cancelDragActions();
            setTimeout(function () {
                dnd.cancelDrag(e);
                _this.finishDrag();
            }, 0);
        }
    };
    DragMixin.prototype.cancelDragActions = function () {
        this.dragInitialised = false;
        clearTimeout(this.delayTimer);
        cancelScrollAction();
    };
    DragMixin.prototype.finishDrag = function () {
        this.downEvent = null;
        this.scrollContainer = null;
        if (this.dragStarted) {
            document.documentElement.classList.remove('drag-in-progress');
        }
        document.removeEventListener('click', this.onMouseClick, true);
        document.removeEventListener('mousemove', this.onMouseMove);
        document.removeEventListener('touchmove', this.onMouseMove);
        document.removeEventListener('easy-dnd-move', this.onEasyDnDMove);
        document.removeEventListener('mouseup', this.onMouseUp);
        document.removeEventListener('touchend', this.onMouseUp);
        document.removeEventListener('selectstart', this.onSelectStart);
        document.removeEventListener('keyup', this.onKeyUp);
        document.documentElement.style.userSelect = this.initialUserSelect;
    };
    DragMixin.prototype.dndDragStart = function (ev) {
        if (ev.source === this) {
            this.$emit('dragstart', ev);
        }
    };
    DragMixin.prototype.dndDragEnd = function (ev) {
        if (ev.source === this) {
            this.$emit('dragend', ev);
        }
    };
    DragMixin.prototype.created = function () {
        dnd.on('dragstart', this.dndDragStart);
        dnd.on('dragend', this.dndDragEnd);
    };
    DragMixin.prototype.mounted = function () {
        this.$el.addEventListener('mousedown', this.onMouseDown);
        this.$el.addEventListener('touchstart', this.onMouseDown);
    };
    DragMixin.prototype.beforeDestroy = function () {
        dnd.off('dragstart', this.dndDragStart);
        dnd.off('dragend', this.dndDragEnd);
        this.$el.removeEventListener('mousedown', this.onMouseDown);
        this.$el.removeEventListener('touchstart', this.onMouseDown);
    };
    Object.defineProperty(DragMixin.prototype, "cssClasses", {
        get: function () {
            var clazz = {
                'dnd-drag': true
            };
            if (!this.disabled) {
                return __assign(__assign({}, clazz), { 'drag-source': this.dragInProgress && this.dragSource === this, 'drag-mode-copy': this.currentDropMode === 'copy', 'drag-mode-cut': this.currentDropMode === 'cut', 'drag-mode-reordering': this.currentDropMode === 'reordering', 'drag-no-handle': !this.handle });
            }
            else {
                return clazz;
            }
        },
        enumerable: true,
        configurable: true
    });
    Object.defineProperty(DragMixin.prototype, "currentDropMode", {
        get: function () {
            if (this.dragInProgress && this.dragSource === this) {
                if (this.dragTop && this.dragTop['dropAllowed']) {
                    if (this.dragTop['reordering'])
                        { return 'reordering'; }
                    else
                        { return this.dragTop['mode']; }
                }
                else {
                    return null;
                }
            }
            else {
                return null;
            }
        },
        enumerable: true,
        configurable: true
    });
    DragMixin.prototype.createDragImage = function (selfTransform) {
        var image;
        if (this.$scopedSlots['drag-image']) {
            var el = this.$refs['drag-image'] || document.createElement('div');
            if (el.childElementCount !== 1) {
                image = createDragImage(el);
            }
            else {
                image = createDragImage(el.children.item(0));
            }
        }
        else {
            image = createDragImage(this.$el);
            image.style.transform = selfTransform;
        }
        if (this.dragClass) {
            image.classList.add(this.dragClass);
        }
        image.classList.add('dnd-ghost');
        image['__opacity'] = this.dragImageOpacity;
        return image;
    };
    __decorate([
        Prop({ default: null, type: null }),
        __metadata("design:type", String)
    ], DragMixin.prototype, "type", void 0);
    __decorate([
        Prop({ default: null, type: null }),
        __metadata("design:type", Object)
    ], DragMixin.prototype, "data", void 0);
    __decorate([
        Prop({ default: 0.7, type: Number }),
        __metadata("design:type", Object)
    ], DragMixin.prototype, "dragImageOpacity", void 0);
    __decorate([
        Prop({ default: false, type: Boolean }),
        __metadata("design:type", Boolean)
    ], DragMixin.prototype, "disabled", void 0);
    __decorate([
        Prop({ default: false, type: Boolean }),
        __metadata("design:type", Boolean)
    ], DragMixin.prototype, "goBack", void 0);
    __decorate([
        Prop({ required: false, type: String }),
        __metadata("design:type", String)
    ], DragMixin.prototype, "handle", void 0);
    __decorate([
        Prop({ type: Number, default: 3 }),
        __metadata("design:type", Number)
    ], DragMixin.prototype, "delta", void 0);
    __decorate([
        Prop({ type: Number, default: 0 }),
        __metadata("design:type", Number)
    ], DragMixin.prototype, "delay", void 0);
    __decorate([
        Prop({ type: String, default: null }),
        __metadata("design:type", String)
    ], DragMixin.prototype, "dragClass", void 0);
    __decorate([
        Prop({ type: Number, default: 0 }),
        __metadata("design:type", Number)
    ], DragMixin.prototype, "vibration", void 0);
    __decorate([
        Prop({ type: Number, default: 100 }),
        __metadata("design:type", Number)
    ], DragMixin.prototype, "scrollingEdgeSize", void 0);
    DragMixin = __decorate([
        Component({})
    ], DragMixin);
    return DragMixin;
}(DragAwareMixin));

var Drag = /** @class */ (function (_super) {
    __extends(Drag, _super);
    function Drag() {
        return _super !== null && _super.apply(this, arguments) || this;
    }
    __decorate([
        Prop({ default: 'div', type: [String, Object, Function] }),
        __metadata("design:type", Object)
    ], Drag.prototype, "tag", void 0);
    Drag = __decorate([
        Component({})
    ], Drag);
    return Drag;
}(DragMixin));

function normalizeComponent(template, style, script, scopeId, isFunctionalTemplate, moduleIdentifier
/* server only */
, shadowMode, createInjector, createInjectorSSR, createInjectorShadow) {
  if (typeof shadowMode !== 'boolean') {
    createInjectorSSR = createInjector;
    createInjector = shadowMode;
    shadowMode = false;
  } // Vue.extend constructor export interop.


  var options = typeof script === 'function' ? script.options : script; // render functions

  if (template && template.render) {
    options.render = template.render;
    options.staticRenderFns = template.staticRenderFns;
    options._compiled = true; // functional template

    if (isFunctionalTemplate) {
      options.functional = true;
    }
  } // scopedId


  if (scopeId) {
    options._scopeId = scopeId;
  }

  var hook;

  if (moduleIdentifier) {
    // server build
    hook = function hook(context) {
      // 2.3 injection
      context = context || // cached call
      this.$vnode && this.$vnode.ssrContext || // stateful
      this.parent && this.parent.$vnode && this.parent.$vnode.ssrContext; // functional
      // 2.2 with runInNewContext: true

      if (!context && typeof __VUE_SSR_CONTEXT__ !== 'undefined') {
        context = __VUE_SSR_CONTEXT__;
      } // inject component styles


      if (style) {
        style.call(this, createInjectorSSR(context));
      } // register component module identifier for async chunk inference


      if (context && context._registeredComponents) {
        context._registeredComponents.add(moduleIdentifier);
      }
    }; // used by ssr in case component is cached and beforeCreate
    // never gets called


    options._ssrRegister = hook;
  } else if (style) {
    hook = shadowMode ? function () {
      style.call(this, createInjectorShadow(this.$root.$options.shadowRoot));
    } : function (context) {
      style.call(this, createInjector(context));
    };
  }

  if (hook) {
    if (options.functional) {
      // register for functional component in vue file
      var originalRender = options.render;

      options.render = function renderWithStyleInjection(h, context) {
        hook.call(context);
        return originalRender(h, context);
      };
    } else {
      // inject component registration as beforeCreate hook
      var existing = options.beforeCreate;
      options.beforeCreate = existing ? [].concat(existing, hook) : [hook];
    }
  }

  return script;
}

var normalizeComponent_1 = normalizeComponent;

var isOldIE = typeof navigator !== 'undefined' && /msie [6-9]\\b/.test(navigator.userAgent.toLowerCase());
function createInjector(context) {
  return function (id, style) {
    return addStyle(id, style);
  };
}
var HEAD;
var styles = {};

function addStyle(id, css) {
  var group = isOldIE ? css.media || 'default' : id;
  var style = styles[group] || (styles[group] = {
    ids: new Set(),
    styles: []
  });

  if (!style.ids.has(id)) {
    style.ids.add(id);
    var code = css.source;

    if (css.map) {
      // https://developer.chrome.com/devtools/docs/javascript-debugging
      // this makes source maps inside style tags work properly in Chrome
      code += '\n/*# sourceURL=' + css.map.sources[0] + ' */'; // http://stackoverflow.com/a/26603875

      code += '\n/*# sourceMappingURL=data:application/json;base64,' + btoa(unescape(encodeURIComponent(JSON.stringify(css.map)))) + ' */';
    }

    if (!style.element) {
      style.element = document.createElement('style');
      style.element.type = 'text/css';
      if (css.media) { style.element.setAttribute('media', css.media); }

      if (HEAD === undefined) {
        HEAD = document.head || document.getElementsByTagName('head')[0];
      }

      HEAD.appendChild(style.element);
    }

    if ('styleSheet' in style.element) {
      style.styles.push(code);
      style.element.styleSheet.cssText = style.styles.filter(Boolean).join('\n');
    } else {
      var index = style.ids.size - 1;
      var textNode = document.createTextNode(code);
      var nodes = style.element.childNodes;
      if (nodes[index]) { style.element.removeChild(nodes[index]); }
      if (nodes.length) { style.element.insertBefore(textNode, nodes[index]); }else { style.element.appendChild(textNode); }
    }
  }
}

var browser = createInjector;

/* script */
var __vue_script__ = Drag;

/* template */
var __vue_render__ = function () {var _vm=this;var _h=_vm.$createElement;var _c=_vm._self._c||_h;return _c(_vm.tag,_vm._g(_vm._b({tag:"component",class:_vm.cssClasses,scopedSlots:_vm._u([_vm._l((_vm.$scopedSlots),function(_,slot){return {key:slot,fn:function(scope){return [_vm._t(slot,null,null,scope)]}}})],null,true)},'component',_vm.$attrs,false),_vm.$listeners),[_vm._t("default"),_vm._v(" "),_vm._v(" "),(_vm.dragInitialised)?_c('div',{ref:"drag-image",staticClass:"__drag-image"},[_vm._t("drag-image")],2):_vm._e()],2)};
var __vue_staticRenderFns__ = [];

  /* style */
  var __vue_inject_styles__ = function (inject) {
    if (!inject) { return }
    inject("data-v-fb811e22_0", { source: ".drop-allowed.drop-in *{cursor:inherit!important}.drop-forbidden.drop-in,.drop-forbidden.drop-in *{cursor:no-drop!important}.drag-no-handle:hover{cursor:move;cursor:grab}", map: undefined, media: undefined })
,inject("data-v-fb811e22_1", { source: "html.drag-in-progress *{cursor:move!important;cursor:grabbing!important}", map: undefined, media: undefined })
,inject("data-v-fb811e22_2", { source: ".__drag-image[data-v-fb811e22]{position:fixed;top:-10000px;left:-10000px;will-change:left,top}", map: undefined, media: undefined });

  };
  /* scoped */
  var __vue_scope_id__ = "data-v-fb811e22";
  /* module identifier */
  var __vue_module_identifier__ = undefined;
  /* functional template */
  var __vue_is_functional_template__ = false;
  /* style inject SSR */



  var Drag$1 = normalizeComponent_1(
    { render: __vue_render__, staticRenderFns: __vue_staticRenderFns__ },
    __vue_inject_styles__,
    __vue_script__,
    __vue_scope_id__,
    __vue_is_functional_template__,
    __vue_module_identifier__,
    browser,
    undefined
  );

var DropMixin = /** @class */ (function (_super) {
    __extends(DropMixin, _super);
    function DropMixin() {
        var _this = _super.call(this) || this;
        _this.isDrop = true;
        return _this;
    }
    DropMixin.prototype.effectiveAcceptsType = function (type) {
        if (this.acceptsType === null)
            { return true; }
        else if (typeof (this.acceptsType) === 'string')
            { return this.acceptsType === type; }
        else if (typeof (this.acceptsType) === 'object' && Array.isArray(this.acceptsType)) {
            return this.acceptsType.includes(type);
        }
        else {
            return this.acceptsType(type);
        }
    };
    DropMixin.prototype.effectiveAcceptsData = function (data, type) {
        return this.acceptsData(data, type);
    };
    DropMixin.prototype.created = function () {
        dnd.on("dragpositionchanged", this.onDragPositionChanged);
        dnd.on("dragtopchanged", this.onDragTopChanged);
        dnd.on("drop", this.onDrop);
        dnd.on("dragend", this.onDragEnd);
    };
    DropMixin.prototype.beforeDestroy = function () {
        dnd.off("dragpositionchanged", this.onDragPositionChanged);
        dnd.off("dragtopchanged", this.onDragTopChanged);
        dnd.off("drop", this.onDrop);
        dnd.off("dragend", this.onDragEnd);
    };
    DropMixin.prototype.onDragPositionChanged = function (event) {
        if (this === event.top) {
            this.$emit("dragover", event);
        }
    };
    DropMixin.prototype.onDragTopChanged = function (event) {
        if (this === event.top) {
            this.$emit("dragenter", event);
        }
        if (this === event.previousTop) {
            this.$emit("dragleave", event);
        }
    };
    DropMixin.prototype.onDragEnd = function (event) {
        if (this === event.top) {
            this.$emit('dragend', event);
        }
    };
    DropMixin.prototype.onDrop = function (event) {
        if (this.dropIn && this.compatibleMode && this.dropAllowed) {
            this.doDrop(event);
        }
    };
    DropMixin.prototype.doDrop = function (event) {
        this.$emit('drop', event);
        event.source.$emit(this.mode, event);
    };
    DropMixin.prototype.mounted = function () {
        var el = this.$el;
        var comp = this;
        el.addEventListener('easy-dnd-move', onMouseMove);
        function onMouseMove(e) {
            dnd.mouseMove(e, comp);
        }
    };
    Object.defineProperty(DropMixin.prototype, "compatibleMode", {
        get: function () {
            if (this.dragInProgress) {
                return this.mode === 'copy' || dnd.sourceListeners.hasOwnProperty(this.mode);
            }
            else {
                return null;
            }
        },
        enumerable: true,
        configurable: true
    });
    Object.defineProperty(DropMixin.prototype, "dropIn", {
        get: function () {
            if (this.dragInProgress) {
                return this.dragTop === this;
            }
            else {
                return null;
            }
        },
        enumerable: true,
        configurable: true
    });
    Object.defineProperty(DropMixin.prototype, "typeAllowed", {
        get: function () {
            if (this.dragInProgress) {
                return this.effectiveAcceptsType(this.dragType);
            }
            else {
                return null;
            }
        },
        enumerable: true,
        configurable: true
    });
    Object.defineProperty(DropMixin.prototype, "dropAllowed", {
        get: function () {
            if (this.dragInProgress) {
                if (this.typeAllowed) {
                    return this.compatibleMode && this.effectiveAcceptsData(this.dragData, this.dragType);
                }
                else {
                    return null;
                }
            }
            else {
                return null;
            }
        },
        enumerable: true,
        configurable: true
    });
    Object.defineProperty(DropMixin.prototype, "cssClasses", {
        get: function () {
            var clazz = {
                'dnd-drop': true
            };
            if (this.dropIn !== null) {
                clazz['drop-in'] = this.dropIn;
                clazz['drop-out'] = !this.dropIn;
            }
            if (this.typeAllowed !== null) {
                clazz['type-allowed'] = this.typeAllowed;
                clazz['type-forbidden'] = !this.typeAllowed;
            }
            if (this.dropAllowed !== null) {
                clazz['drop-allowed'] = this.dropAllowed;
                clazz['drop-forbidden'] = !this.dropAllowed;
            }
            return clazz;
        },
        enumerable: true,
        configurable: true
    });
    Object.defineProperty(DropMixin.prototype, "cssStyle", {
        get: function () {
            return {};
        },
        enumerable: true,
        configurable: true
    });
    /**
     * Returns true if the current drop area participates in the current drag operation.
     */
    DropMixin.prototype.candidate = function (type, data, source) {
        return this.effectiveAcceptsType(type);
    };
    DropMixin.prototype.createDragImage = function () {
        var image;
        if (this.$refs['drag-image']) {
            var el = this.$refs['drag-image'];
            if (el.childElementCount !== 1) {
                image = createDragImage(el);
            }
            else {
                image = createDragImage(el.children.item(0));
            }
            image['__opacity'] = this.dragImageOpacity;
            image.classList.add('dnd-ghost');
        }
        else {
            image = 'source';
        }
        return image;
    };
    __decorate([
        Prop({ default: function () { return function () { return true; }; }, type: [String, Array, Function] }),
        __metadata("design:type", Object)
    ], DropMixin.prototype, "acceptsType", void 0);
    __decorate([
        Prop({ default: function () { return true; }, type: Function }),
        __metadata("design:type", Object)
    ], DropMixin.prototype, "acceptsData", void 0);
    __decorate([
        Prop({ default: 'copy' }),
        __metadata("design:type", String)
    ], DropMixin.prototype, "mode", void 0);
    __decorate([
        Prop({ default: 0.7, type: Number }),
        __metadata("design:type", Object)
    ], DropMixin.prototype, "dragImageOpacity", void 0);
    DropMixin = __decorate([
        Component({}),
        __metadata("design:paramtypes", [])
    ], DropMixin);
    return DropMixin;
}(DragAwareMixin));

var Drop = /** @class */ (function (_super) {
    __extends(Drop, _super);
    function Drop() {
        return _super !== null && _super.apply(this, arguments) || this;
    }
    Object.defineProperty(Drop.prototype, "showDragImage", {
        get: function () {
            return this.dragInProgress && this.typeAllowed && this.$scopedSlots['drag-image'];
        },
        enumerable: true,
        configurable: true
    });
    __decorate([
        Prop({ default: 'div', type: [String, Object, Function] }),
        __metadata("design:type", Object)
    ], Drop.prototype, "tag", void 0);
    Drop = __decorate([
        Component({})
    ], Drop);
    return Drop;
}(DropMixin));

/* script */
var __vue_script__$1 = Drop;

/* template */
var __vue_render__$1 = function () {var _vm=this;var _h=_vm.$createElement;var _c=_vm._self._c||_h;return _c(_vm.tag,_vm._g(_vm._b({tag:"component",class:_vm.cssClasses,style:(_vm.cssStyle),scopedSlots:_vm._u([_vm._l((_vm.$scopedSlots),function(_,slot){return {key:slot,fn:function(scope){return [_vm._t(slot,null,null,scope)]}}})],null,true)},'component',_vm.$attrs,false),_vm.$listeners),[_vm._t("default"),_vm._v(" "),_vm._v(" "),(_vm.showDragImage)?_c('div',{ref:"drag-image",staticClass:"__drag-image"},[_vm._t("drag-image",null,{"type":_vm.dragType,"data":_vm.dragData})],2):_vm._e()],2)};
var __vue_staticRenderFns__$1 = [];

  /* style */
  var __vue_inject_styles__$1 = function (inject) {
    if (!inject) { return }
    inject("data-v-1d9169a9_0", { source: ".drop-allowed.drop-in,.drop-allowed.drop-in *{cursor:pointer!important}.drop-forbidden.drop-in,.drop-forbidden.drop-in *{cursor:no-drop!important}", map: undefined, media: undefined })
,inject("data-v-1d9169a9_1", { source: ".__drag-image[data-v-1d9169a9]{position:fixed;top:-10000px;left:-10000px;will-change:left,top}", map: undefined, media: undefined });

  };
  /* scoped */
  var __vue_scope_id__$1 = "data-v-1d9169a9";
  /* module identifier */
  var __vue_module_identifier__$1 = undefined;
  /* functional template */
  var __vue_is_functional_template__$1 = false;
  /* style inject SSR */



  var Drop$1 = normalizeComponent_1(
    { render: __vue_render__$1, staticRenderFns: __vue_staticRenderFns__$1 },
    __vue_inject_styles__$1,
    __vue_script__$1,
    __vue_scope_id__$1,
    __vue_is_functional_template__$1,
    __vue_module_identifier__$1,
    browser,
    undefined
  );

var DropMask = /** @class */ (function (_super) {
    __extends(DropMask, _super);
    function DropMask() {
        var _this = _super !== null && _super.apply(this, arguments) || this;
        _this.isDropMask = true;
        return _this;
    }
    DropMask.prototype.mounted = function () {
        var el = this.$el;
        var comp = this;
        el.addEventListener('easy-dnd-move', onMouseMove);
        function onMouseMove(e) {
            dnd.mouseMove(e, comp);
        }
    };
    DropMask.prototype.createDragImage = function () {
        return 'source';
    };
    __decorate([
        Prop({ default: 'div', type: [String, Object, Function] }),
        __metadata("design:type", Object)
    ], DropMask.prototype, "tag", void 0);
    DropMask = __decorate([
        Component({})
    ], DropMask);
    return DropMask;
}(DragAwareMixin));

/* script */
var __vue_script__$2 = DropMask;

/* template */
var __vue_render__$2 = function () {var _vm=this;var _h=_vm.$createElement;var _c=_vm._self._c||_h;return _c(_vm.tag,_vm._g(_vm._b({tag:"component",scopedSlots:_vm._u([_vm._l((_vm.$scopedSlots),function(_,slot){return {key:slot,fn:function(scope){return [_vm._t(slot,null,null,scope)]}}})],null,true)},'component',_vm.$attrs,false),_vm.$listeners),[_vm._t("default")],2)};
var __vue_staticRenderFns__$2 = [];

  /* style */
  var __vue_inject_styles__$2 = undefined;
  /* scoped */
  var __vue_scope_id__$2 = undefined;
  /* module identifier */
  var __vue_module_identifier__$2 = undefined;
  /* functional template */
  var __vue_is_functional_template__$2 = false;
  /* style inject */

  /* style inject SSR */



  var DropMask$1 = normalizeComponent_1(
    { render: __vue_render__$2, staticRenderFns: __vue_staticRenderFns__$2 },
    __vue_inject_styles__$2,
    __vue_script__$2,
    __vue_scope_id__$2,
    __vue_is_functional_template__$2,
    __vue_module_identifier__$2,
    undefined,
    undefined
  );

/**
 * This class reacts to drag events emitted by the dnd object to manage a sequence of drag images and fade from one to the
 * other as the drag progresses.
 */
var DragImagesManager = /** @class */ (function (_super) {
    __extends(DragImagesManager, _super);
    function DragImagesManager() {
        var _this = _super.call(this) || this;
        _this.selfTransform = null;
        _this.clones = null;
        _this.source = null;
        _this.sourcePos = null;
        _this.sourceClone = null;
        dnd.on('dragstart', _this.onDragStart);
        dnd.on('dragtopchanged', _this.onDragTopChanged);
        dnd.on('dragpositionchanged', _this.onDragPositionChanged);
        dnd.on('dragend', _this.onDragEnd);
        return _this;
    }
    DragImagesManager.prototype.onDragStart = function (event) {
        // If go-back=true and it is still animating while they attempt another drag,
        //      it will bug out. Best to clean up any existing elements on the page before
        //      attempting to start the next animation
        this.cleanUp();
        this.sourcePos = {
            x: event.source.$el.getBoundingClientRect().left,
            y: event.source.$el.getBoundingClientRect().top
        };
        this.selfTransform = "translate(-" + (event.position.x - this.sourcePos.x) + "px, -" + (event.position.y - this.sourcePos.y) + "px)";
        this.clones = new Map();
        this.source = event.source;
    };
    DragImagesManager.prototype.onDragEnd = function (event) {
        var _this = this;
        Vue.nextTick(function () {
            if (!event.success && _this.source && _this.source['goBack']) {
                // Restore the drag image that is active when hovering outside any drop zone :
                var img_1 = _this.switch(null);
                // Move it back to its original place :
                window.requestAnimationFrame(function () {
                    img_1.style.transition = "all 0.5s";
                    window.requestAnimationFrame(function () {
                        img_1.style.left = _this.sourcePos.x + "px";
                        img_1.style.top = _this.sourcePos.y + "px";
                        img_1.style.transform = "translate(0,0)";
                        var handler = function () {
                            _this.cleanUp();
                            img_1.removeEventListener("transitionend", handler);
                        };
                        img_1.addEventListener("transitionend", handler);
                    });
                });
            }
            else {
                _this.cleanUp();
            }
        });
    };
    DragImagesManager.prototype.cleanUp = function () {
        if (this.clones) {
            this.clones.forEach(function (clone) {
                if (clone.parentNode === document.body) {
                    document.body.removeChild(clone);
                }
            });
        }
        if (this.sourceClone !== null) {
            if (this.sourceClone.parentNode === document.body) {
                document.body.removeChild(this.sourceClone);
            }
        }
        this.selfTransform = null;
        this.clones = null;
        this.source = null;
        this.sourceClone = null;
        this.sourcePos = null;
    };
    DragImagesManager.prototype.onDragTopChanged = function (event) {
        this.switch(event.top);
    };
    DragImagesManager.prototype.switch = function (top) {
        this.clones.forEach(function (clone) {
            clone.style.opacity = "0";
        });
        if (this.sourceClone) {
            this.sourceClone.style.opacity = "0";
        }
        var activeClone;
        if (top === null) {
            activeClone = this.getSourceClone();
        }
        else {
            if (!this.clones.has(top)) {
                var clone = top['createDragImage'](this.selfTransform);
                if (clone === 'source') {
                    clone = this.getSourceClone();
                }
                else if (clone !== null) {
                    clone.style.opacity = '0';
                    document.body.appendChild(clone);
                }
                this.clones.set(top, clone);
            }
            activeClone = this.clones.get(top);
        }
        if (activeClone !== null) {
            activeClone.offsetWidth; // Forces browser reflow
            activeClone.style.opacity = activeClone['__opacity'];
            activeClone.style.visibility = 'visible';
        }
        return activeClone;
    };
    DragImagesManager.prototype.getSourceClone = function () {
        if (this.sourceClone === null) {
            this.sourceClone = this.source['createDragImage'](this.selfTransform);
            this.sourceClone.style.opacity = '0';
            document.body.appendChild(this.sourceClone);
        }
        return this.sourceClone;
    };
    DragImagesManager.prototype.onDragPositionChanged = function (event) {
        this.clones.forEach(function (clone) {
            clone.style.left = dnd.position.x + "px";
            clone.style.top = dnd.position.y + "px";
        });
        if (this.sourceClone) {
            this.sourceClone.style.left = dnd.position.x + "px";
            this.sourceClone.style.top = dnd.position.y + "px";
        }
    };
    DragImagesManager = __decorate([
        Component({}) // Necessary to set proper "this" context in event listeners.
        ,
        __metadata("design:paramtypes", [])
    ], DragImagesManager);
    return DragImagesManager;
}(Vue));
new DragImagesManager();

var DragFeedback = /** @class */ (function (_super) {
    __extends(DragFeedback, _super);
    function DragFeedback() {
        return _super !== null && _super.apply(this, arguments) || this;
    }
    DragFeedback = __decorate([
        Component({})
    ], DragFeedback);
    return DragFeedback;
}(Vue));

/* script */
var __vue_script__$3 = DragFeedback;

/* template */
var __vue_render__$3 = function () {var _vm=this;var _h=_vm.$createElement;var _c=_vm._self._c||_h;return _c('div',{staticClass:"DragFeedback"},[_vm._t("default")],2)};
var __vue_staticRenderFns__$3 = [];

  /* style */
  var __vue_inject_styles__$3 = undefined;
  /* scoped */
  var __vue_scope_id__$3 = "data-v-0589f3cb";
  /* module identifier */
  var __vue_module_identifier__$3 = undefined;
  /* functional template */
  var __vue_is_functional_template__$3 = false;
  /* style inject */

  /* style inject SSR */



  var DragFeedback$1 = normalizeComponent_1(
    { render: __vue_render__$3, staticRenderFns: __vue_staticRenderFns__$3 },
    __vue_inject_styles__$3,
    __vue_script__$3,
    __vue_scope_id__$3,
    __vue_is_functional_template__$3,
    __vue_module_identifier__$3,
    undefined,
    undefined
  );

var Grid = /** @class */ (function () {
    function Grid(collection, upToIndex, row, fromIndex) {
        var e_1, _a;
        this.magnets = [];
        this.reference = collection.item(0).parentNode;
        this.referenceOriginalPosition = {
            x: this.reference.getBoundingClientRect().left - this.reference.scrollLeft,
            y: this.reference.getBoundingClientRect().top - this.reference.scrollTop,
        };
        var index = 0;
        try {
            for (var collection_1 = __values(collection), collection_1_1 = collection_1.next(); !collection_1_1.done; collection_1_1 = collection_1.next()) {
                var child = collection_1_1.value;
                if (index > upToIndex)
                    { break; }
                var rect = child.getBoundingClientRect();
                var hasNestedDrop = child.classList.contains("dnd-drop") || child.getElementsByClassName("dnd-drop").length > 0;
                var horizontal = null;
                if (hasNestedDrop) {
                    if (row === 'auto') {
                        // Auto mode not supported for now. Row or column must be defined explicitly if there are nested drop lists.
                        throw new Error("Easy-DnD error : a drop list is missing one of these attributes : 'row' or 'column'.");
                    }
                    else {
                        horizontal = row === 'row';
                    }
                }
                if (fromIndex === null) {
                    // Inserting mode.
                    this.magnets.push(hasNestedDrop ? this.before(rect, horizontal) : this.center(rect));
                }
                else {
                    // Reordering mode.
                    this.magnets.push(hasNestedDrop ? (fromIndex < index ? this.after : this.before)(rect, horizontal) : this.center(rect));
                }
                // Debug : show magnets :
                //document.body.insertAdjacentHTML("beforeend", "<div style='background-color: red; position: fixed; width: 1px; height: 1px; top:" + this.magnets[index].y + "px; left:" + this.magnets[index].x + "px;' ></div>")
                index++;
            }
        }
        catch (e_1_1) { e_1 = { error: e_1_1 }; }
        finally {
            try {
                if (collection_1_1 && !collection_1_1.done && (_a = collection_1.return)) { _a.call(collection_1); }
            }
            finally { if (e_1) { throw e_1.error; } }
        }
    }
    /**
     * Returns the center of the rectangle.
     */
    Grid.prototype.center = function (rect) {
        return {
            x: rect.left + rect.width / 2,
            y: rect.top + rect.height / 2
        };
    };
    /**
     * When horizontal is true / false, returns middle of the left / top side of the rectangle.
     */
    Grid.prototype.before = function (rect, horizontal) {
        return horizontal ? {
            x: rect.left,
            y: rect.top + rect.height / 2
        } : {
            x: rect.left + rect.width / 2,
            y: rect.top
        };
    };
    /**
     * When horizontal is true / false, returns middle of the right / bottom side of the rectangle.
     */
    Grid.prototype.after = function (rect, horizontal) {
        return horizontal ? {
            x: rect.left + rect.width,
            y: rect.top + rect.height / 2
        } : {
            x: rect.left + rect.width / 2,
            y: rect.top + rect.height
        };
    };
    /**
     * In case the user scrolls during the drag, the position of the magnets are not what they used to be when the drag
     * started. A correction must be applied that takes into account the amount of scroll. This correction is the
     * difference between the current position of the parent element and its position when the drag started.
     */
    Grid.prototype.correction = function () {
        return {
            x: this.reference.getBoundingClientRect().left - this.reference.scrollLeft - this.referenceOriginalPosition.x,
            y: this.reference.getBoundingClientRect().top - this.reference.scrollTop - this.referenceOriginalPosition.y,
        };
    };
    Grid.prototype.closestIndex = function (position) {
        var x = position.x - this.correction().x;
        var y = position.y - this.correction().y;
        var minDist = 999999;
        var index = -1;
        for (var i = 0; i < this.magnets.length; i++) {
            var magnet = this.magnets[i];
            var dist = Math.sqrt(Math.pow(magnet.x - x, 2) + Math.pow(magnet.y - y, 2));
            if (dist < minDist) {
                minDist = dist;
                index = i;
            }
        }
        return index;
    };
    return Grid;
}());

var DnDEvent = /** @class */ (function () {
    function DnDEvent() {
    }
    return DnDEvent;
}());
var ReorderEvent = /** @class */ (function () {
    function ReorderEvent(from, to) {
        this.from = from;
        this.to = to;
    }
    ReorderEvent.prototype.apply = function (array) {
        var tmp = array[this.from];
        array.splice(this.from, 1);
        array.splice(this.to, 0, tmp);
    };
    return ReorderEvent;
}());
var InsertEvent = /** @class */ (function () {
    function InsertEvent(type, data, index) {
        this.type = type;
        this.data = data;
        this.index = index;
    }
    return InsertEvent;
}());

var DropList = /** @class */ (function (_super) {
    __extends(DropList, _super);
    function DropList() {
        var _this = _super !== null && _super.apply(this, arguments) || this;
        _this.grid = null;
        _this.forbiddenKeys = [];
        _this.feedbackKey = null;
        _this.fromIndex = null;
        return _this;
    }
    Object.defineProperty(DropList.prototype, "rootTag", {
        get: function () {
            if (this.noAnimations) {
                return this.tag ? this.tag : 'div';
            }
            else {
                return "transition-group";
            }
        },
        enumerable: true,
        configurable: true
    });
    Object.defineProperty(DropList.prototype, "rootProps", {
        get: function () {
            if (this.noAnimations) {
                return this.$attrs;
            }
            else {
                return {
                    tag: this.tag,
                    duration: { enter: 0, leave: 0 },
                    css: false
                };
            }
        },
        enumerable: true,
        configurable: true
    });
    Object.defineProperty(DropList.prototype, "rootListeners", {
        get: function () {
            if (this.noAnimations) {
                return this.$listeners;
            }
            else {
                return {};
            }
        },
        enumerable: true,
        configurable: true
    });
    DropList.prototype.created = function () {
        dnd.on("dragstart", this.onDragStart);
        dnd.on("dragend", this.onDragEnd);
    };
    Object.defineProperty(DropList.prototype, "direction", {
        get: function () {
            if (this.row)
                { return 'row'; }
            if (this.column)
                { return 'column'; }
            return 'auto';
        },
        enumerable: true,
        configurable: true
    });
    DropList.prototype.beforeDestroy = function () {
        dnd.off("dragstart", this.onDragStart);
        dnd.off("dragend", this.onDragEnd);
    };
    // Presence of feedback node in the DOM and of keys in the virtual DOM required => delayed until what
    // depends on drag data has been processed.
    DropList.prototype.refresh = function () {
        var _this = this;
        this.$nextTick(function () {
            _this.grid = _this.computeInsertingGrid();
            _this.feedbackKey = _this.computeFeedbackKey();
            _this.forbiddenKeys = _this.computeForbiddenKeys();
        });
    };
    DropList.prototype.onDragStart = function (event) {
        if (this.candidate(dnd.type, dnd.data, dnd.source)) {
            if (this.reordering) {
                this.fromIndex = Array.prototype.indexOf.call(event.source.$el.parentElement.children, event.source.$el);
                this.grid = this.computeReorderingGrid();
            }
            else {
                this.refresh();
            }
        }
    };
    DropList.prototype.onDragEnd = function () {
        this.fromIndex = null;
        this.feedbackKey = null;
        this.forbiddenKeys = null;
        this.grid = null;
    };
    Object.defineProperty(DropList.prototype, "reordering", {
        get: function () {
            if (dnd.inProgress) {
                return dnd.source.$el.parentElement === this.$el && this.$listeners.hasOwnProperty('reorder');
            }
            else {
                return null;
            }
        },
        enumerable: true,
        configurable: true
    });
    Object.defineProperty(DropList.prototype, "closestIndex", {
        get: function () {
            if (this.grid) {
                return this.grid.closestIndex(dnd.position);
            }
            else {
                return null;
            }
        },
        enumerable: true,
        configurable: true
    });
    Object.defineProperty(DropList.prototype, "dropAllowed", {
        get: function () {
            if (this.dragInProgress) {
                if (this.reordering) {
                    return this.items.length > 1;
                }
                else {
                    var superDropAllowed = DropMixin['options'].computed.dropAllowed.get.call(this);
                    if (!superDropAllowed) {
                        return false;
                    }
                    else {
                        if (this.forbiddenKeys !== null && this.feedbackKey !== null) {
                            return !this.forbiddenKeys.includes(this.feedbackKey);
                        }
                        else {
                            return null;
                        }
                    }
                }
            }
            else {
                return null;
            }
        },
        enumerable: true,
        configurable: true
    });
    Object.defineProperty(DropList.prototype, "itemsBeforeFeedback", {
        get: function () {
            if (this.closestIndex === 0) {
                return [];
            }
            else {
                return this.items.slice(0, this.closestIndex);
            }
        },
        enumerable: true,
        configurable: true
    });
    Object.defineProperty(DropList.prototype, "itemsAfterFeedback", {
        get: function () {
            if (this.closestIndex === this.items.length) {
                return [];
            }
            else {
                return this.items.slice(this.closestIndex);
            }
        },
        enumerable: true,
        configurable: true
    });
    Object.defineProperty(DropList.prototype, "itemsBeforeReorderingFeedback", {
        get: function () {
            if (this.closestIndex <= this.fromIndex) {
                return this.items.slice(0, this.closestIndex);
            }
            else {
                return this.items.slice(0, this.closestIndex + 1);
            }
        },
        enumerable: true,
        configurable: true
    });
    Object.defineProperty(DropList.prototype, "itemsAfterReorderingFeedback", {
        get: function () {
            if (this.closestIndex <= this.fromIndex) {
                return this.items.slice(this.closestIndex);
            }
            else {
                return this.items.slice(this.closestIndex + 1);
            }
        },
        enumerable: true,
        configurable: true
    });
    Object.defineProperty(DropList.prototype, "reorderedItems", {
        get: function () {
            var toIndex = this.closestIndex;
            var reordered = __spread(this.items);
            var temp = reordered[this.fromIndex];
            reordered.splice(this.fromIndex, 1);
            reordered.splice(toIndex, 0, temp);
            return reordered;
        },
        enumerable: true,
        configurable: true
    });
    Object.defineProperty(DropList.prototype, "clazz", {
        get: function () {
            return __assign({ 'drop-list': true, 'reordering': this.reordering === true, 'inserting': this.reordering === false }, (this.reordering === false ? this.cssClasses : { 'dnd-drop': true }));
        },
        enumerable: true,
        configurable: true
    });
    Object.defineProperty(DropList.prototype, "style", {
        get: function () {
            return __assign({}, (this.reordering === false ? this.cssStyle : {}));
        },
        enumerable: true,
        configurable: true
    });
    Object.defineProperty(DropList.prototype, "showDragFeedback", {
        get: function () {
            return this.dragInProgress && this.typeAllowed && !this.reordering;
        },
        enumerable: true,
        configurable: true
    });
    Object.defineProperty(DropList.prototype, "showInsertingDragImage", {
        get: function () {
            return this.dragInProgress && this.typeAllowed && !this.reordering && this.$scopedSlots.hasOwnProperty("drag-image");
        },
        enumerable: true,
        configurable: true
    });
    Object.defineProperty(DropList.prototype, "showReorderingDragImage", {
        get: function () {
            return this.dragInProgress && this.reordering && this.$scopedSlots.hasOwnProperty("reordering-drag-image");
        },
        enumerable: true,
        configurable: true
    });
    DropList.prototype.doDrop = function (event) {
        if (this.reordering) {
            if (this.fromIndex !== this.closestIndex) {
                this.$emit('reorder', new ReorderEvent(this.fromIndex, this.closestIndex));
            }
        }
        else {
            DropMixin['options'].methods.doDrop.call(this, event);
            this.$emit('insert', new InsertEvent(event.type, event.data, this.closestIndex));
        }
    };
    DropList.prototype.candidate = function (type, data, source) {
        var _a;
        var superCandidate = (_a = DropMixin['options'].methods.candidate).call.apply(_a, __spread([this], arguments));
        return (superCandidate && (this.$listeners.hasOwnProperty("insert") || this.$listeners.hasOwnProperty("drop"))) || this.reordering;
    };
    DropList.prototype.computeForbiddenKeys = function () {
        var vnodes = this.noAnimations ? [] : this.$children[0].$vnode.context.$children[0].$slots.default;
        return vnodes
            .map(function (vn) { return vn.key; })
            .filter(function (k) { return k !== undefined && k !== 'drag-image' && k !== 'drag-feedback'; });
    };
    DropList.prototype.computeFeedbackKey = function () {
        return this.$refs['feedback']['$slots']['default'][0]['key'];
    };
    Object.defineProperty(DropList.prototype, "hasReorderingFeedback", {
        get: function () {
            return this.$scopedSlots.hasOwnProperty("reordering-feedback");
        },
        enumerable: true,
        configurable: true
    });
    DropList.prototype.computeInsertingGrid = function () {
        var feedbackParent = this.$refs['feedback']['$el'];
        var feedback = feedbackParent.children[0];
        var clone = feedback.cloneNode(true);
        var tg = this.$el;
        if (tg.children.length > this.items.length) {
            tg.insertBefore(clone, tg.children[this.items.length]);
        }
        else {
            tg.appendChild(clone);
        }
        var grid = new Grid(tg.children, this.items.length, this.direction, null);
        tg.removeChild(clone);
        return grid;
    };
    DropList.prototype.computeReorderingGrid = function () {
        var tg = this.$el;
        return new Grid(tg.children, this.items.length - 1, this.direction, this.fromIndex);
    };
    DropList.prototype.createDragImage = function () {
        var image;
        if (this.$refs['drag-image']) {
            var el = this.$refs['drag-image'];
            var model = void 0;
            if (el.childElementCount !== 1) {
                model = el;
            }
            else {
                model = el.children.item(0);
            }
            var clone = model.cloneNode(true);
            var tg = this.$el;
            tg.appendChild(clone);
            image = createDragImage(clone);
            tg.removeChild(clone);
            image['__opacity'] = this.dragImageOpacity;
            image.classList.add('dnd-ghost');
        }
        else {
            image = 'source';
        }
        return image;
    };
    __decorate([
        Prop({ default: 'div', type: [String, Object, Function] }),
        __metadata("design:type", Object)
    ], DropList.prototype, "tag", void 0);
    __decorate([
        Prop(),
        __metadata("design:type", Array)
    ], DropList.prototype, "items", void 0);
    __decorate([
        Prop({ default: null }),
        __metadata("design:type", Boolean)
    ], DropList.prototype, "row", void 0);
    __decorate([
        Prop({ default: null, type: Boolean }),
        __metadata("design:type", Boolean)
    ], DropList.prototype, "column", void 0);
    __decorate([
        Prop({ default: false, type: Boolean }),
        __metadata("design:type", Boolean)
    ], DropList.prototype, "noAnimations", void 0);
    __decorate([
        Prop({ type: Number, default: undefined }),
        __metadata("design:type", Number)
    ], DropList.prototype, "scrollingEdgeSize", void 0);
    DropList = __decorate([
        Component({
            components: { DragFeedback: DragFeedback$1 },
            inheritAttrs: false
        })
    ], DropList);
    return DropList;
}(DropMixin));

/* script */
var __vue_script__$4 = DropList;

/* template */
var __vue_render__$4 = function () {var _vm=this;var _h=_vm.$createElement;var _c=_vm._self._c||_h;return _c(_vm.rootTag,_vm._g(_vm._b({tag:"component",class:_vm.clazz,style:(_vm.style)},'component',_vm.rootProps,false),_vm.rootListeners),[(_vm.dropIn && _vm.dropAllowed)?[(_vm.reordering)?[(_vm.hasReorderingFeedback)?[_vm._l((_vm.itemsBeforeReorderingFeedback),function(item,index){return _vm._t("item",null,{"item":item,"index":index})}),_vm._v(" "),_vm._t("reordering-feedback",null,{"item":_vm.items[_vm.fromIndex]}),_vm._v(" "),_vm._l((_vm.itemsAfterReorderingFeedback),function(item,index){return _vm._t("item",null,{"item":item,"index":_vm.itemsBeforeReorderingFeedback.length + index})})]:[_vm._l((_vm.reorderedItems),function(item,index){return _vm._t("item",null,{"item":item,"index":index,"reorder":index === _vm.closestIndex})})]]:[_vm._l((_vm.itemsBeforeFeedback),function(item,index){return _vm._t("item",null,{"item":item,"reorder":false,"index":index})}),_vm._v(" "),_vm._t("feedback",null,{"data":_vm.dragData,"type":_vm.dragType}),_vm._v(" "),_vm._l((_vm.itemsAfterFeedback),function(item,index){return _vm._t("item",null,{"item":item,"reorder":false,"index":_vm.itemsBeforeFeedback.length + index})})]]:[_vm._l((_vm.items),function(item,index){return _vm._t("item",null,{"item":item,"reorder":false,"index":index})}),_vm._v(" "),(_vm.items.length < 1)?_vm._t("empty"):_vm._e()],_vm._v(" "),(_vm.showDragFeedback)?_c('drag-feedback',{key:"drag-feedback",ref:"feedback",staticClass:"__feedback"},[_vm._t("feedback",null,{"data":_vm.dragData,"type":_vm.dragType})],2):_vm._e(),_vm._v(" "),(_vm.showInsertingDragImage)?_c('div',{key:"inserting-drag-image",ref:"drag-image",staticClass:"__drag-image"},[_vm._t("drag-image",null,{"type":_vm.dragType,"data":_vm.dragData})],2):_vm._e(),_vm._v(" "),(_vm.showReorderingDragImage)?_c('div',{key:"reordering-drag-image",ref:"drag-image",staticClass:"__drag-image"},[_vm._t("reordering-drag-image",null,{"item":_vm.items[_vm.fromIndex]})],2):_vm._e(),_vm._v(" "),_vm._t("default")],2)};
var __vue_staticRenderFns__$4 = [];

  /* style */
  var __vue_inject_styles__$4 = function (inject) {
    if (!inject) { return }
    inject("data-v-228404f8_0", { source: ".drop-list[data-v-228404f8]>*{transition:transform .2s}.__feedback[data-v-228404f8]{display:none}.__drag-image[data-v-228404f8]{position:fixed;top:-10000px;left:-10000px;will-change:left,top}", map: undefined, media: undefined })
,inject("data-v-228404f8_1", { source: ".drop-allowed.drop-in *{cursor:inherit!important}.drop-forbidden.drop-in,.drop-forbidden.drop-in *{cursor:no-drop!important}", map: undefined, media: undefined });

  };
  /* scoped */
  var __vue_scope_id__$4 = "data-v-228404f8";
  /* module identifier */
  var __vue_module_identifier__$4 = undefined;
  /* functional template */
  var __vue_is_functional_template__$4 = false;
  /* style inject SSR */



  var DropList$1 = normalizeComponent_1(
    { render: __vue_render__$4, staticRenderFns: __vue_staticRenderFns__$4 },
    __vue_inject_styles__$4,
    __vue_script__$4,
    __vue_scope_id__$4,
    __vue_is_functional_template__$4,
    __vue_module_identifier__$4,
    browser,
    undefined
  );

export { DnDEvent, Drag$1 as Drag, DragAwareMixin, DragImagesManager, DragMixin, Drop$1 as Drop, DropList$1 as DropList, DropMask$1 as DropMask, DropMixin, InsertEvent, ReorderEvent, createDragImage, dnd };