'use strict'
const init = (L) => {
    (function(factory, window) {
        // define an AMD module that relies on 'leaflet'
        if (typeof define === 'function' && window.define.amd) {
            window.define(['leaflet'], factory)

            // define a Common JS module that relies on 'leaflet'
        } else if (typeof exports === 'object') {
            module.exports = factory(require('leaflet'))
        }

        // attach your plugin to the global 'L' variable
        if (typeof window !== 'undefined' && L) {
            factory(L)
        }
    }(function(L) {
        // 🍂miniclass CancelableEvent (Event objects)
        // 🍂method cancel()
        // Cancel any subsequent action.

        // 🍂miniclass VertexEvent (Event objects)
        // 🍂property vertex: VertexMarker
        // The vertex that fires the event.

        // 🍂miniclass ShapeEvent (Event objects)
        // 🍂property shape: Array
        // The shape (LatLngs array) subject of the action.

        // 🍂miniclass CancelableVertexEvent (Event objects)
        // 🍂inherits VertexEvent
        // 🍂inherits CancelableEvent

        // 🍂miniclass CancelableShapeEvent (Event objects)
        // 🍂inherits ShapeEvent
        // 🍂inherits CancelableEvent

        // 🍂miniclass LayerEvent (Event objects)
        // 🍂property layer: object
        // The Layer (Marker, Polyline…) subject of the action.

        // 🍂namespace Editable; 🍂class Editable; 🍂aka L.Editable
        // Main edition handler. By default, it is attached to the map
        // as `map.editTools` property.
        // Leaflet.Editable is made to be fully extendable. You have three ways to customize
        // the behaviour: using options, listening to events, or extending.
        L.Editable = L.Evented.extend({

            statics: {
                FORWARD: 1,
                BACKWARD: -1
            },

            options: {

                // You can pass them when creating a map using the `editOptions` key.
                // 🍂option zIndex: int = 1000
                // The default zIndex of the editing tools.
                zIndex: 1000,

                // 🍂option polygonClass: class = L.Polygon
                // Class to be used when creating a new Polygon.
                polygonClass: L.Polygon,

                // 🍂option polylineClass: class = L.Polyline
                // Class to be used when creating a new Polyline.
                polylineClass: L.Polyline,

                // 🍂option markerClass: class = L.Marker
                // Class to be used when creating a new Marker.
                markerClass: L.Marker,

                // 🍂option rectangleClass: class = L.Rectangle
                // Class to be used when creating a new Rectangle.
                rectangleClass: L.Rectangle,

                // 🍂option circleClass: class = L.Circle
                // Class to be used when creating a new Circle.
                circleClass: L.Circle,

                // 🍂option drawingCSSClass: string = 'leaflet-editable-drawing'
                // CSS class to be added to the map container while drawing.
                drawingCSSClass: 'leaflet-editable-drawing',

                // 🍂option drawingCursor: const = 'crosshair'
                // Cursor mode set to the map while drawing.
                drawingCursor: 'crosshair',

                // 🍂option editLayer: Layer = new L.LayerGroup()
                // Layer used to store edit tools (vertex, line guide…).
                editLayer: undefined,

                // 🍂option featuresLayer: Layer = new L.LayerGroup()
                // Default layer used to store drawn features (Marker, Polyline…).
                featuresLayer: undefined,

                // 🍂option polylineEditorClass: class = PolylineEditor
                // Class to be used as Polyline editor.
                polylineEditorClass: undefined,

                // 🍂option polygonEditorClass: class = PolygonEditor
                // Class to be used as Polygon editor.
                polygonEditorClass: undefined,

                // 🍂option markerEditorClass: class = MarkerEditor
                // Class to be used as Marker editor.
                markerEditorClass: undefined,

                // 🍂option rectangleEditorClass: class = RectangleEditor
                // Class to be used as Rectangle editor.
                rectangleEditorClass: undefined,

                // 🍂option circleEditorClass: class = CircleEditor
                // Class to be used as Circle editor.
                circleEditorClass: undefined,

                // 🍂option lineGuideOptions: hash = {}
                // Options to be passed to the line guides.
                lineGuideOptions: {},

                // 🍂option skipMiddleMarkers: boolean = false
                // Set this to true if you don't want middle markers.
                skipMiddleMarkers: false

            },

            initialize: function(map, options) {
                L.setOptions(this, options)
                this._lastZIndex = this.options.zIndex
                this.map = map
                this.editLayer = this.createEditLayer()
                this.featuresLayer = this.createFeaturesLayer()
                this.forwardLineGuide = this.createLineGuide()
                this.backwardLineGuide = this.createLineGuide()
            },

            fireAndForward: function(type, e) {
                e = e || {}
                e.editTools = this
                this.fire(type, e)
                this.map.fire(type, e)
            },

            createLineGuide: function() {
                let options = L.extend({
                    dashArray: '5,10',
                    weight: 1,
                    interactive: false
                }, this.options.lineGuideOptions)
                return L.polyline([], options)
            },

            createVertexIcon: function(options) {
                return L.Browser.mobile && L.Browser.touch ? new L.Editable.TouchVertexIcon(options) : new L.Editable.VertexIcon(options)
            },

            createEditLayer: function() {
                return this.options.editLayer || new L.LayerGroup().addTo(this.map)
            },

            createFeaturesLayer: function() {
                return this.options.featuresLayer || new L.LayerGroup().addTo(this.map)
            },

            moveForwardLineGuide: function(latlng) {
                if (this.forwardLineGuide._latlngs.length) {
                    this.forwardLineGuide._latlngs[1] = latlng
                    this.forwardLineGuide._bounds.extend(latlng)
                    this.forwardLineGuide.redraw()
                }
            },

            moveBackwardLineGuide: function(latlng) {
                if (this.backwardLineGuide._latlngs.length) {
                    this.backwardLineGuide._latlngs[1] = latlng
                    this.backwardLineGuide._bounds.extend(latlng)
                    this.backwardLineGuide.redraw()
                }
            },

            anchorForwardLineGuide: function(latlng) {
                this.forwardLineGuide._latlngs[0] = latlng
                this.forwardLineGuide._bounds.extend(latlng)
                this.forwardLineGuide.redraw()
            },

            anchorBackwardLineGuide: function(latlng) {
                this.backwardLineGuide._latlngs[0] = latlng
                this.backwardLineGuide._bounds.extend(latlng)
                this.backwardLineGuide.redraw()
            },

            attachForwardLineGuide: function() {
                this.editLayer.addLayer(this.forwardLineGuide)
            },

            attachBackwardLineGuide: function() {
                this.editLayer.addLayer(this.backwardLineGuide)
            },

            detachForwardLineGuide: function() {
                this.forwardLineGuide.setLatLngs([])
                this.editLayer.removeLayer(this.forwardLineGuide)
            },

            detachBackwardLineGuide: function() {
                this.backwardLineGuide.setLatLngs([])
                this.editLayer.removeLayer(this.backwardLineGuide)
            },

            blockEvents: function() {
                // Hack: force map not to listen to other layers events while drawing.
                if (!this._oldTargets) {
                    this._oldTargets = this.map._targets
                    this.map._targets = {}
                }
            },

            unblockEvents: function() {
                if (this._oldTargets) {
                    // Reset, but keep targets created while drawing.
                    this.map._targets = L.extend(this.map._targets, this._oldTargets)
                    delete this._oldTargets
                }
            },

            registerForDrawing: function(editor) {
                if (this._drawingEditor) this.unregisterForDrawing(this._drawingEditor)
                this.blockEvents()
                editor.reset() // Make sure editor tools still receive events.
                this._drawingEditor = editor
                this.map.on('mousemove touchmove', editor.onDrawingMouseMove, editor)
                this.map.on('mousedown', this.onMousedown, this)
                this.map.on('mouseup', this.onMouseup, this)
                L.DomUtil.addClass(this.map._container, this.options.drawingCSSClass)
                this.defaultMapCursor = this.map._container.style.cursor
                this.map._container.style.cursor = this.options.drawingCursor
            },

            unregisterForDrawing: function(editor) {
                this.unblockEvents()
                L.DomUtil.removeClass(this.map._container, this.options.drawingCSSClass)
                this.map._container.style.cursor = this.defaultMapCursor
                editor = editor || this._drawingEditor
                if (!editor) return
                this.map.off('mousemove touchmove', editor.onDrawingMouseMove, editor)
                this.map.off('mousedown', this.onMousedown, this)
                this.map.off('mouseup', this.onMouseup, this)
                if (editor !== this._drawingEditor) return
                delete this._drawingEditor
                if (editor._drawing) editor.cancelDrawing()
            },

            onMousedown: function(e) {
                if (e.originalEvent.which !== 1) return
                this._mouseDown = e
                this._drawingEditor.onDrawingMouseDown(e)
            },

            onMouseup: function(e) {
                if (this._mouseDown) {
                    let editor = this._drawingEditor
                    let mouseDown = this._mouseDown
                    this._mouseDown = null
                    editor.onDrawingMouseUp(e)
                    if (this._drawingEditor !== editor) return // onDrawingMouseUp may call unregisterFromDrawing.
                    let origin = L.point(mouseDown.originalEvent.clientX, mouseDown.originalEvent.clientY)
                    let distance = L.point(e.originalEvent.clientX, e.originalEvent.clientY).distanceTo(origin)
                    if (Math.abs(distance) < 9 * (window.devicePixelRatio || 1)) this._drawingEditor.onDrawingClick(e)
                }
            },

            // 🍂section Public methods
            // You will generally access them by the `map.editTools`
            // instance:
            //
            // `map.editTools.startPolyline();`

            // 🍂method drawing(): boolean
            // Return true if any drawing action is ongoing.
            drawing: function() {
                return this._drawingEditor && this._drawingEditor.drawing()
            },

            // 🍂method stopDrawing()
            // When you need to stop any ongoing drawing, without needing to know which editor is active.
            stopDrawing: function() {
                this.unregisterForDrawing()
            },

            // 🍂method commitDrawing()
            // When you need to commit any ongoing drawing, without needing to know which editor is active.
            commitDrawing: function(e) {
                if (!this._drawingEditor) return
                this._drawingEditor.commitDrawing(e)
            },

            connectCreatedToMap: function(layer) {
                return this.featuresLayer.addLayer(layer)
            },

            // 🍂method startPolyline(latlng: L.LatLng, options: hash): L.Polyline
            // Start drawing a Polyline. If `latlng` is given, a first point will be added. In any case, continuing on user click.
            // If `options` is given, it will be passed to the Polyline class constructor.
            startPolyline: function(latlng, options) {
                let line = this.createPolyline([], options)
                line.enableEdit(this.map).newShape(latlng)
                return line
            },

            // 🍂method startPolygon(latlng: L.LatLng, options: hash): L.Polygon
            // Start drawing a Polygon. If `latlng` is given, a first point will be added. In any case, continuing on user click.
            // If `options` is given, it will be passed to the Polygon class constructor.
            startPolygon: function(latlng, options) {
                let polygon = this.createPolygon([], options)
                polygon.enableEdit(this.map).newShape(latlng)
                return polygon
            },

            // 🍂method startMarker(latlng: L.LatLng, options: hash): L.Marker
            // Start adding a Marker. If `latlng` is given, the Marker will be shown first at this point.
            // In any case, it will follow the user mouse, and will have a final `latlng` on next click (or touch).
            // If `options` is given, it will be passed to the Marker class constructor.
            startMarker: function(latlng, options) {
                latlng = latlng || this.map.getCenter().clone()
                let marker = this.createMarker(latlng, options)
                marker.enableEdit(this.map).startDrawing()
                return marker
            },

            // 🍂method startRectangle(latlng: L.LatLng, options: hash): L.Rectangle
            // Start drawing a Rectangle. If `latlng` is given, the Rectangle anchor will be added. In any case, continuing on user drag.
            // If `options` is given, it will be passed to the Rectangle class constructor.
            startRectangle: function(latlng, options) {
                let corner = latlng || L.latLng([0, 0])
                let bounds = new L.LatLngBounds(corner, corner)
                let rectangle = this.createRectangle(bounds, options)
                rectangle.enableEdit(this.map).startDrawing()
                return rectangle
            },

            // 🍂method startCircle(latlng: L.LatLng, options: hash): L.Circle
            // Start drawing a Circle. If `latlng` is given, the Circle anchor will be added. In any case, continuing on user drag.
            // If `options` is given, it will be passed to the Circle class constructor.
            startCircle: function(latlng, options) {
                latlng = latlng || this.map.getCenter().clone()
                let circle = this.createCircle(latlng, options)
                circle.enableEdit(this.map).startDrawing()
                return circle
            },

            startHole: function(editor, latlng) {
                editor.newHole(latlng)
            },

            createLayer: function(Klass, latlngs, options) {
                options = L.Util.extend({ editOptions: { editTools: this } }, options)
                let layer = new Klass(latlngs, options)
                // 🍂namespace Editable
                // 🍂event editable:created: LayerEvent
                // Fired when a new feature (Marker, Polyline…) is created.
                this.fireAndForward('editable:created', { layer: layer })
                return layer
            },

            createPolyline: function(latlngs, options) {
                return this.createLayer((options && options.polylineClass) || this.options.polylineClass, latlngs, options)
            },

            createPolygon: function(latlngs, options) {
                return this.createLayer((options && options.polygonClass) || this.options.polygonClass, latlngs, options)
            },

            createMarker: function(latlng, options) {
                return this.createLayer((options && options.markerClass) || this.options.markerClass, latlng, options)
            },

            createRectangle: function(bounds, options) {
                return this.createLayer((options && options.rectangleClass) || this.options.rectangleClass, bounds, options)
            },

            createCircle: function(latlng, options) {
                return this.createLayer((options && options.circleClass) || this.options.circleClass, latlng, options)
            }

        })

        L.extend(L.Editable, {

            makeCancellable: function(e) {
                e.cancel = function() {
                    e._cancelled = true
                }
            }

        })

        // 🍂namespace Map; 🍂class Map
        // Leaflet.Editable add options and events to the `L.Map` object.
        // See `Editable` events for the list of events fired on the Map.
        // 🍂example
        //
        // ```js
        // let map = L.map('map', {
        //  editable: true,
        //  editOptions: {
        //    …
        // }
        // });
        // ```
        // 🍂section Editable Map Options
        L.Map.mergeOptions({

            // 🍂namespace Map
            // 🍂section Map Options
            // 🍂option EditToolsClass: class = L.Editable
            // Class to be used as vertex, for path editing.
            EditToolsClass: L.Editable,

            // 🍂option editable: boolean = false
            // Whether to create a L.Editable instance at map init.
            editable: false,

            // 🍂option editOptions: hash = {}
            // Options to pass to L.Editable when instantiating.
            editOptions: {}

        })

        L.Map.addInitHook(function() {
            this.whenReady(function() {
                if (this.options.editable) {
                    this.editTools = new this.options.EditToolsClass(this, this.options.editOptions)
                }
            })
        })

        L.Editable.VertexIcon = L.DivIcon.extend({

            options: {
                iconSize: new L.Point(8, 8)
            }

        })

        L.Editable.TouchVertexIcon = L.Editable.VertexIcon.extend({

            options: {
                iconSize: new L.Point(20, 20)
            }

        })

        // 🍂namespace Editable; 🍂class VertexMarker; Handler for dragging path vertices.
        L.Editable.VertexMarker = L.Marker.extend({

            options: {
                draggable: true,
                className: 'leaflet-vertex-icon leaflet-custom-icon'
            },

            // 🍂section Public methods
            // The marker used to handle path vertex. You will usually interact with a `VertexMarker`
            // instance when listening for events like `editable:vertex:ctrlclick`.

            initialize: function(latlng, latlngs, editor, options) {
                // We don't use this._latlng, because on drag Leaflet replace it while
                // we want to keep reference.
                this.latlng = latlng
                this.latlngs = latlngs
                this.editor = editor
                L.Marker.prototype.initialize.call(this, latlng, options)
                this.options.icon = this.editor.tools.createVertexIcon({ className: this.options.className })
                this.latlng.__vertex = this
                this.editor.editLayer.addLayer(this)
                this.setZIndexOffset(editor.tools._lastZIndex + 1)
            },

            onAdd: function(map) {
                L.Marker.prototype.onAdd.call(this, map)
                this.on('drag', this.onDrag)
                this.on('dragstart', this.onDragStart)
                this.on('dragend', this.onDragEnd)
                this.on('mouseup', this.onMouseup)
                this.on('click', this.onClick)
                this.on('contextmenu', this.onContextMenu)
                this.on('mousedown touchstart', this.onMouseDown)
                this.on('mouseover', this.onMouseOver)
                this.on('mouseout', this.onMouseOut)
                this.addMiddleMarkers()
            },

            onRemove: function(map) {
                if (this.middleMarker) this.middleMarker.delete()
                delete this.latlng.__vertex
                this.off('drag', this.onDrag)
                this.off('dragstart', this.onDragStart)
                this.off('dragend', this.onDragEnd)
                this.off('mouseup', this.onMouseup)
                this.off('click', this.onClick)
                this.off('contextmenu', this.onContextMenu)
                this.off('mousedown touchstart', this.onMouseDown)
                this.off('mouseover', this.onMouseOver)
                this.off('mouseout', this.onMouseOut)
                L.Marker.prototype.onRemove.call(this, map)
            },

            onDrag: function(e) {
                e.vertex = this
                this.editor.onVertexMarkerDrag(e)
                let iconPos = L.DomUtil.getPosition(this._icon)
                let latlng = this._map.layerPointToLatLng(iconPos)
                this.latlng.update(latlng)
                this._latlng = this.latlng // Push back to Leaflet our reference.
                this.editor.refresh()
                if (this.middleMarker) this.middleMarker.updateLatLng()
                let next = this.getNext()
                if (next && next.middleMarker) next.middleMarker.updateLatLng()
            },

            onDragStart: function(e) {
                e.vertex = this
                this.editor.onVertexMarkerDragStart(e)
            },

            onDragEnd: function(e) {
                e.vertex = this
                this.editor.onVertexMarkerDragEnd(e)
            },

            onClick: function(e) {
                e.vertex = this
                this.editor.onVertexMarkerClick(e)
            },

            onMouseup: function(e) {
                L.DomEvent.stop(e)
                e.vertex = this
                this.editor.map.fire('mouseup', e)
            },

            onContextMenu: function(e) {
                e.vertex = this
                this.editor.onVertexMarkerContextMenu(e)
            },

            onMouseDown: function(e) {
                e.vertex = this
                this.editor.onVertexMarkerMouseDown(e)
            },

            onMouseOver: function(e) {
                e.vertex = this
                this.editor.onVertexMarkerMouseOver(e)
            },

            onMouseOut: function(e) {
                e.vertex = this
                this.editor.onVertexMarkerMouseOut(e)
            },

            // 🍂method delete()
            // Delete a vertex and the related LatLng.
            delete: function() {
                let next = this.getNext() // Compute before changing latlng
                this.latlngs.splice(this.getIndex(), 1)
                this.editor.editLayer.removeLayer(this)
                this.editor.onVertexDeleted({ latlng: this.latlng, vertex: this })
                if (!this.latlngs.length) this.editor.deleteShape(this.latlngs)
                if (next) next.resetMiddleMarker()
                this.editor.refresh()
            },

            // 🍂method getIndex(): int
            // Get the index of the current vertex among others of the same LatLngs group.
            getIndex: function() {
                return this.latlngs.indexOf(this.latlng)
            },

            // 🍂method getLastIndex(): int
            // Get last vertex index of the LatLngs group of the current vertex.
            getLastIndex: function() {
                return this.latlngs.length - 1
            },

            // 🍂method getPrevious(): VertexMarker
            // Get the previous VertexMarker in the same LatLngs group.
            getPrevious: function() {
                if (this.latlngs.length < 2) return
                let index = this.getIndex()
                let previousIndex = index - 1
                if (index === 0 && this.editor.CLOSED) previousIndex = this.getLastIndex()
                let previous = this.latlngs[previousIndex]
                if (previous) return previous.__vertex
            },

            // 🍂method getNext(): VertexMarker
            // Get the next VertexMarker in the same LatLngs group.
            getNext: function() {
                if (this.latlngs.length < 2) return
                let index = this.getIndex()
                let nextIndex = index + 1
                if (index === this.getLastIndex() && this.editor.CLOSED) nextIndex = 0
                let next = this.latlngs[nextIndex]
                if (next) return next.__vertex
            },

            addMiddleMarker: function(previous) {
                if (!this.editor.hasMiddleMarkers()) return
                previous = previous || this.getPrevious()
                if (previous && !this.middleMarker) this.middleMarker = this.editor.addMiddleMarker(previous, this, this.latlngs, this.editor)
            },

            addMiddleMarkers: function() {
                if (!this.editor.hasMiddleMarkers()) return
                let previous = this.getPrevious()
                if (previous) this.addMiddleMarker(previous)
                let next = this.getNext()
                if (next) next.resetMiddleMarker()
            },

            resetMiddleMarker: function() {
                if (this.middleMarker) this.middleMarker.delete()
                this.addMiddleMarker()
            },

            // 🍂method split()
            // Split the vertex LatLngs group at its index, if possible.
            split: function() {
                if (!this.editor.splitShape) return // Only for PolylineEditor
                this.editor.splitShape(this.latlngs, this.getIndex())
            },

            // 🍂method continue()
            // Continue the vertex LatLngs from this vertex. Only active for first and last vertices of a Polyline.
            continue: function() {
                if (!this.editor.continueBackward) return // Only for PolylineEditor
                let index = this.getIndex()
                if (index === 0) this.editor.continueBackward(this.latlngs)
                else if (index === this.getLastIndex()) this.editor.continueForward(this.latlngs)
            }

        })

        L.Editable.mergeOptions({

            // 🍂namespace Editable
            // 🍂option VertexMarkerClass: class = VertexMarker
            // Class to be used as vertex, for path editing.
            VertexMarkerClass: L.Editable.VertexMarker

        })

        L.Editable.MiddleMarker = L.Marker.extend({

            options: {
                opacity: 0.5,
                className: 'leaflet-div-icon leaflet-middle-icon',
                draggable: true
            },

            initialize: function(left, right, latlngs, editor, options) {
                this.left = left
                this.right = right
                this.editor = editor
                this.latlngs = latlngs
                L.Marker.prototype.initialize.call(this, this.computeLatLng(), options)
                this._opacity = this.options.opacity
                this.options.icon = this.editor.tools.createVertexIcon({ className: this.options.className })
                this.editor.editLayer.addLayer(this)
                this.setVisibility()
            },

            setVisibility: function() {
                let leftPoint = this._map.latLngToContainerPoint(this.left.latlng)
                let rightPoint = this._map.latLngToContainerPoint(this.right.latlng)
                let size = L.point(this.options.icon.options.iconSize)
                if (leftPoint.distanceTo(rightPoint) < size.x * 3) this.hide()
                else this.show()
            },

            show: function() {
                this.setOpacity(this._opacity)
            },

            hide: function() {
                this.setOpacity(0)
            },

            updateLatLng: function() {
                this.setLatLng(this.computeLatLng())
                this.setVisibility()
            },

            computeLatLng: function() {
                let leftPoint = this.editor.map.latLngToContainerPoint(this.left.latlng)
                let rightPoint = this.editor.map.latLngToContainerPoint(this.right.latlng)
                let y = (leftPoint.y + rightPoint.y) / 2
                let x = (leftPoint.x + rightPoint.x) / 2
                return this.editor.map.containerPointToLatLng([x, y])
            },

            onAdd: function(map) {
                L.Marker.prototype.onAdd.call(this, map)
                L.DomEvent.on(this._icon, 'mousedown touchstart', this.onMouseDown, this)
                map.on('zoomend', this.setVisibility, this)
            },

            onRemove: function(map) {
                delete this.right.middleMarker
                L.DomEvent.off(this._icon, 'mousedown touchstart', this.onMouseDown, this)
                map.off('zoomend', this.setVisibility, this)
                L.Marker.prototype.onRemove.call(this, map)
            },

            onMouseDown: function(e) {
                let iconPos = L.DomUtil.getPosition(this._icon)
                let latlng = this.editor.map.layerPointToLatLng(iconPos)
                e = {
                    originalEvent: e,
                    latlng: latlng
                }
                if (this.options.opacity === 0) return
                L.Editable.makeCancellable(e)
                this.editor.onMiddleMarkerMouseDown(e)
                if (e._cancelled) return
                this.latlngs.splice(this.index(), 0, e.latlng)
                this.editor.refresh()
                let icon = this._icon
                let marker = this.editor.addVertexMarker(e.latlng, this.latlngs)
                this.editor.onNewVertex(marker)
                /* Hack to workaround browser not firing touchend when element is no more on DOM */
                let parent = marker._icon.parentNode
                parent.removeChild(marker._icon)
                marker._icon = icon
                parent.appendChild(marker._icon)
                marker._initIcon()
                marker._initInteraction()
                marker.setOpacity(1)
                /* End hack */
                // Transfer ongoing dragging to real marker
                L.Draggable._dragging = false
                marker.dragging._draggable._onDown(e.originalEvent)
                this.delete()
            },

            delete: function() {
                this.editor.editLayer.removeLayer(this)
            },

            index: function() {
                return this.latlngs.indexOf(this.right.latlng)
            }

        })

        L.Editable.mergeOptions({

            // 🍂namespace Editable
            // 🍂option MiddleMarkerClass: class = VertexMarker
            // Class to be used as middle vertex, pulled by the user to create a new point in the middle of a path.
            MiddleMarkerClass: L.Editable.MiddleMarker

        })

        // 🍂namespace Editable; 🍂class BaseEditor; 🍂aka L.Editable.BaseEditor
        // When editing a feature (Marker, Polyline…), an editor is attached to it. This
        // editor basically knows how to handle the edition.
        L.Editable.BaseEditor = L.Handler.extend({

            initialize: function(map, feature, options) {
                L.setOptions(this, options)
                this.map = map
                this.feature = feature
                this.feature.editor = this
                this.editLayer = new L.LayerGroup()
                this.tools = this.options.editTools || map.editTools
            },

            // 🍂method enable(): this
            // Set up the drawing tools for the feature to be editable.
            addHooks: function() {
                if (this.isConnected()) this.onFeatureAdd()
                else this.feature.once('add', this.onFeatureAdd, this)
                this.onEnable()
                this.feature.on(this._getEvents(), this)
            },

            // 🍂method disable(): this
            // Remove the drawing tools for the feature.
            removeHooks: function() {
                this.feature.off(this._getEvents(), this)
                if (this.feature.dragging) this.feature.dragging.disable()
                this.editLayer.clearLayers()
                this.tools.editLayer.removeLayer(this.editLayer)
                this.onDisable()
                if (this._drawing) this.cancelDrawing()
            },

            // 🍂method drawing(): boolean
            // Return true if any drawing action is ongoing with this editor.
            drawing: function() {
                return !!this._drawing
            },

            reset: function() {
            },

            onFeatureAdd: function() {
                this.tools.editLayer.addLayer(this.editLayer)
                if (this.feature.dragging) this.feature.dragging.enable()
            },

            hasMiddleMarkers: function() {
                return !this.options.skipMiddleMarkers && !this.tools.options.skipMiddleMarkers
            },

            fireAndForward: function(type, e) {
                e = e || {}
                e.layer = this.feature
                this.feature.fire(type, e)
                this.tools.fireAndForward(type, e)
            },

            onEnable: function() {
                // 🍂namespace Editable
                // 🍂event editable:enable: Event
                // Fired when an existing feature is ready to be edited.
                this.fireAndForward('editable:enable')
            },

            onDisable: function() {
                // 🍂namespace Editable
                // 🍂event editable:disable: Event
                // Fired when an existing feature is not ready anymore to be edited.
                this.fireAndForward('editable:disable')
            },

            onEditing: function() {
                // 🍂namespace Editable
                // 🍂event editable:editing: Event
                // Fired as soon as any change is made to the feature geometry.
                this.fireAndForward('editable:editing')
            },

            onStartDrawing: function() {
                // 🍂namespace Editable
                // 🍂section Drawing events
                // 🍂event editable:drawing:start: Event
                // Fired when a feature is to be drawn.
                this.fireAndForward('editable:drawing:start')
            },

            onEndDrawing: function() {
                // 🍂namespace Editable
                // 🍂section Drawing events
                // 🍂event editable:drawing:end: Event
                // Fired when a feature is not drawn anymore.
                this.fireAndForward('editable:drawing:end')
            },

            onCancelDrawing: function() {
                // 🍂namespace Editable
                // 🍂section Drawing events
                // 🍂event editable:drawing:cancel: Event
                // Fired when user cancel drawing while a feature is being drawn.
                this.fireAndForward('editable:drawing:cancel')
            },

            onCommitDrawing: function(e) {
                // 🍂namespace Editable
                // 🍂section Drawing events
                // 🍂event editable:drawing:commit: Event
                // Fired when user finish drawing a feature.
                this.fireAndForward('editable:drawing:commit', e)
            },

            onDrawingMouseDown: function(e) {
                // 🍂namespace Editable
                // 🍂section Drawing events
                // 🍂event editable:drawing:mousedown: Event
                // Fired when user `mousedown` while drawing.
                this.fireAndForward('editable:drawing:mousedown', e)
            },

            onDrawingMouseUp: function(e) {
                // 🍂namespace Editable
                // 🍂section Drawing events
                // 🍂event editable:drawing:mouseup: Event
                // Fired when user `mouseup` while drawing.
                this.fireAndForward('editable:drawing:mouseup', e)
            },

            startDrawing: function() {
                if (!this._drawing) this._drawing = L.Editable.FORWARD
                this.tools.registerForDrawing(this)
                this.onStartDrawing()
            },

            commitDrawing: function(e) {
                this.onCommitDrawing(e)
                this.endDrawing()
            },

            cancelDrawing: function() {
                // If called during a vertex drag, the vertex will be removed before
                // the mouseup fires on it. This is a workaround. Maybe better fix is
                // To have L.Draggable reset it's status on disable (Leaflet side).
                L.Draggable._dragging = false
                this.onCancelDrawing()
                this.endDrawing()
            },

            endDrawing: function() {
                this._drawing = false
                this.tools.unregisterForDrawing(this)
                this.onEndDrawing()
            },

            onDrawingClick: function(e) {
                if (!this.drawing()) return
                L.Editable.makeCancellable(e)
                // 🍂namespace Editable
                // 🍂section Drawing events
                // 🍂event editable:drawing:click: CancelableEvent
                // Fired when user `click` while drawing, before any internal action is being processed.
                this.fireAndForward('editable:drawing:click', e)
                if (e._cancelled) return
                if (!this.isConnected()) this.connect(e)
                this.processDrawingClick(e)
            },

            isConnected: function() {
                return this.map.hasLayer(this.feature)
            },

            connect: function() {
                this.tools.connectCreatedToMap(this.feature)
                this.tools.editLayer.addLayer(this.editLayer)
            },

            onMove: function(e) {
                // 🍂namespace Editable
                // 🍂section Drawing events
                // 🍂event editable:drawing:move: Event
                // Fired when `move` mouse while drawing, while dragging a marker, and while dragging a vertex.
                this.fireAndForward('editable:drawing:move', e)
            },

            onDrawingMouseMove: function(e) {
                this.onMove(e)
            },

            _getEvents: function() {
                return {
                    dragstart: this.onDragStart,
                    drag: this.onDrag,
                    dragend: this.onDragEnd,
                    remove: this.disable
                }
            },

            onDragStart: function(e) {
                this.onEditing()
                // 🍂namespace Editable
                // 🍂event editable:dragstart: Event
                // Fired before a path feature is dragged.
                this.fireAndForward('editable:dragstart', e)
            },

            onDrag: function(e) {
                this.onMove(e)
                // 🍂namespace Editable
                // 🍂event editable:drag: Event
                // Fired when a path feature is being dragged.
                this.fireAndForward('editable:drag', e)
            },

            onDragEnd: function(e) {
                // 🍂namespace Editable
                // 🍂event editable:dragend: Event
                // Fired after a path feature has been dragged.
                this.fireAndForward('editable:dragend', e)
            }

        })

        // 🍂namespace Editable; 🍂class MarkerEditor; 🍂aka L.Editable.MarkerEditor
        // 🍂inherits BaseEditor
        // Editor for Marker.
        L.Editable.MarkerEditor = L.Editable.BaseEditor.extend({

            onDrawingMouseMove: function(e) {
                L.Editable.BaseEditor.prototype.onDrawingMouseMove.call(this, e)
                if (this._drawing) this.feature.setLatLng(e.latlng)
            },

            processDrawingClick: function(e) {
                // 🍂namespace Editable
                // 🍂section Drawing events
                // 🍂event editable:drawing:clicked: Event
                // Fired when user `click` while drawing, after all internal actions.
                this.fireAndForward('editable:drawing:clicked', e)
                this.commitDrawing(e)
            },

            connect: function(e) {
                // On touch, the latlng has not been updated because there is
                // no mousemove.
                if (e) this.feature._latlng = e.latlng
                L.Editable.BaseEditor.prototype.connect.call(this, e)
            }

        })

        // 🍂namespace Editable; 🍂class PathEditor; 🍂aka L.Editable.PathEditor
        // 🍂inherits BaseEditor
        // Base class for all path editors.
        L.Editable.PathEditor = L.Editable.BaseEditor.extend({

            CLOSED: false,
            MIN_VERTEX: 2,

            addHooks: function() {
                L.Editable.BaseEditor.prototype.addHooks.call(this)
                if (this.feature) this.initVertexMarkers()
                return this
            },

            initVertexMarkers: function(latlngs) {
                if (!this.enabled()) return
                latlngs = latlngs || this.getLatLngs()
                if (isFlat(latlngs)) this.addVertexMarkers(latlngs)
                else for (let i = 0; i < latlngs.length; i++) this.initVertexMarkers(latlngs[i])
            },

            getLatLngs: function() {
                return this.feature.getLatLngs()
            },

            // 🍂method reset()
            // Rebuild edit elements (Vertex, MiddleMarker, etc.).
            reset: function() {
                this.editLayer.clearLayers()
                this.initVertexMarkers()
            },

            addVertexMarker: function(latlng, latlngs) {
                return new this.tools.options.VertexMarkerClass(latlng, latlngs, this)
            },

            onNewVertex: function(vertex) {
                // 🍂namespace Editable
                // 🍂section Vertex events
                // 🍂event editable:vertex:new: VertexEvent
                // Fired when a new vertex is created.
                this.fireAndForward('editable:vertex:new', { latlng: vertex.latlng, vertex: vertex })
            },

            addVertexMarkers: function(latlngs) {
                for (let i = 0; i < latlngs.length; i++) {
                    this.addVertexMarker(latlngs[i], latlngs)
                }
            },

            refreshVertexMarkers: function(latlngs) {
                latlngs = latlngs || this.getDefaultLatLngs()
                for (let i = 0; i < latlngs.length; i++) {
                    latlngs[i].__vertex.update()
                }
            },

            addMiddleMarker: function(left, right, latlngs) {
                return new this.tools.options.MiddleMarkerClass(left, right, latlngs, this)
            },

            onVertexMarkerClick: function(e) {
                L.Editable.makeCancellable(e)
                // 🍂namespace Editable
                // 🍂section Vertex events
                // 🍂event editable:vertex:click: CancelableVertexEvent
                // Fired when a `click` is issued on a vertex, before any internal action is being processed.
                this.fireAndForward('editable:vertex:click', e)
                if (e._cancelled) return
                if (this.tools.drawing() && this.tools._drawingEditor !== this) return
                let index = e.vertex.getIndex()
                let commit
                if (e.originalEvent.ctrlKey) {
                    this.onVertexMarkerCtrlClick(e)
                } else if (e.originalEvent.altKey) {
                    this.onVertexMarkerAltClick(e)
                } else if (e.originalEvent.shiftKey) {
                    this.onVertexMarkerShiftClick(e)
                } else if (e.originalEvent.metaKey) {
                    this.onVertexMarkerMetaKeyClick(e)
                } else if (index === e.vertex.getLastIndex() && this._drawing === L.Editable.FORWARD) {
                    if (index >= this.MIN_VERTEX - 1) commit = true
                } else if (index === 0 && this._drawing === L.Editable.BACKWARD && this._drawnLatLngs.length >= this.MIN_VERTEX) {
                    commit = true
                } else if (index === 0 && this._drawing === L.Editable.FORWARD && this._drawnLatLngs.length >= this.MIN_VERTEX && this.CLOSED) {
                    commit = true // Allow to close on first point also for polygons
                } else {
                    this.onVertexRawMarkerClick(e)
                }
                // 🍂namespace Editable
                // 🍂section Vertex events
                // 🍂event editable:vertex:clicked: VertexEvent
                // Fired when a `click` is issued on a vertex, after all internal actions.
                this.fireAndForward('editable:vertex:clicked', e)
                if (commit) this.commitDrawing(e)
            },

            onVertexRawMarkerClick: function(e) {
                // 🍂namespace Editable
                // 🍂section Vertex events
                // 🍂event editable:vertex:rawclick: CancelableVertexEvent
                // Fired when a `click` is issued on a vertex without any special key and without being in drawing mode.
                this.fireAndForward('editable:vertex:rawclick', e)
                if (e._cancelled) return
                if (!this.vertexCanBeDeleted(e.vertex)) return
                e.vertex.delete()
            },

            vertexCanBeDeleted: function(vertex) {
                return vertex.latlngs.length > this.MIN_VERTEX
            },

            onVertexDeleted: function(e) {
                // 🍂namespace Editable
                // 🍂section Vertex events
                // 🍂event editable:vertex:deleted: VertexEvent
                // Fired after a vertex has been deleted by user.
                this.fireAndForward('editable:vertex:deleted', e)
            },

            onVertexMarkerCtrlClick: function(e) {
                // 🍂namespace Editable
                // 🍂section Vertex events
                // 🍂event editable:vertex:ctrlclick: VertexEvent
                // Fired when a `click` with `ctrlKey` is issued on a vertex.
                this.fireAndForward('editable:vertex:ctrlclick', e)
            },

            onVertexMarkerShiftClick: function(e) {
                // 🍂namespace Editable
                // 🍂section Vertex events
                // 🍂event editable:vertex:shiftclick: VertexEvent
                // Fired when a `click` with `shiftKey` is issued on a vertex.
                this.fireAndForward('editable:vertex:shiftclick', e)
            },

            onVertexMarkerMetaKeyClick: function(e) {
                // 🍂namespace Editable
                // 🍂section Vertex events
                // 🍂event editable:vertex:metakeyclick: VertexEvent
                // Fired when a `click` with `metaKey` is issued on a vertex.
                this.fireAndForward('editable:vertex:metakeyclick', e)
            },

            onVertexMarkerAltClick: function(e) {
                // 🍂namespace Editable
                // 🍂section Vertex events
                // 🍂event editable:vertex:altclick: VertexEvent
                // Fired when a `click` with `altKey` is issued on a vertex.
                this.fireAndForward('editable:vertex:altclick', e)
            },

            onVertexMarkerContextMenu: function(e) {
                // 🍂namespace Editable
                // 🍂section Vertex events
                // 🍂event editable:vertex:contextmenu: VertexEvent
                // Fired when a `contextmenu` is issued on a vertex.
                this.fireAndForward('editable:vertex:contextmenu', e)
            },

            onVertexMarkerMouseDown: function(e) {
                // 🍂namespace Editable
                // 🍂section Vertex events
                // 🍂event editable:vertex:mousedown: VertexEvent
                // Fired when user `mousedown` a vertex.
                this.fireAndForward('editable:vertex:mousedown', e)
            },

            onVertexMarkerMouseOver: function(e) {
                // 🍂namespace Editable
                // 🍂section Vertex events
                // 🍂event editable:vertex:mouseover: VertexEvent
                // Fired when a user's mouse enters the vertex
                this.fireAndForward('editable:vertex:mouseover', e)
            },

            onVertexMarkerMouseOut: function(e) {
                // 🍂namespace Editable
                // 🍂section Vertex events
                // 🍂event editable:vertex:mouseout: VertexEvent
                // Fired when a user's mouse leaves the vertex
                this.fireAndForward('editable:vertex:mouseout', e)
            },

            onMiddleMarkerMouseDown: function(e) {
                // 🍂namespace Editable
                // 🍂section MiddleMarker events
                // 🍂event editable:middlemarker:mousedown: VertexEvent
                // Fired when user `mousedown` a middle marker.
                this.fireAndForward('editable:middlemarker:mousedown', e)
            },

            onVertexMarkerDrag: function(e) {
                this.onMove(e)
                if (this.feature._bounds) this.extendBounds(e)
                // 🍂namespace Editable
                // 🍂section Vertex events
                // 🍂event editable:vertex:drag: VertexEvent
                // Fired when a vertex is dragged by user.
                this.fireAndForward('editable:vertex:drag', e)
            },

            onVertexMarkerDragStart: function(e) {
                // 🍂namespace Editable
                // 🍂section Vertex events
                // 🍂event editable:vertex:dragstart: VertexEvent
                // Fired before a vertex is dragged by user.
                this.fireAndForward('editable:vertex:dragstart', e)
            },

            onVertexMarkerDragEnd: function(e) {
                // 🍂namespace Editable
                // 🍂section Vertex events
                // 🍂event editable:vertex:dragend: VertexEvent
                // Fired after a vertex is dragged by user.
                this.fireAndForward('editable:vertex:dragend', e)
            },

            setDrawnLatLngs: function(latlngs) {
                this._drawnLatLngs = latlngs || this.getDefaultLatLngs()
            },

            startDrawing: function() {
                if (!this._drawnLatLngs) this.setDrawnLatLngs()
                L.Editable.BaseEditor.prototype.startDrawing.call(this)
            },

            startDrawingForward: function() {
                this.startDrawing()
            },

            endDrawing: function() {
                this.tools.detachForwardLineGuide()
                this.tools.detachBackwardLineGuide()
                if (this._drawnLatLngs && this._drawnLatLngs.length < this.MIN_VERTEX) this.deleteShape(this._drawnLatLngs)
                L.Editable.BaseEditor.prototype.endDrawing.call(this)
                delete this._drawnLatLngs
            },

            addLatLng: function(latlng) {
                if (this._drawing === L.Editable.FORWARD) this._drawnLatLngs.push(latlng)
                else this._drawnLatLngs.unshift(latlng)
                this.feature._bounds.extend(latlng)
                let vertex = this.addVertexMarker(latlng, this._drawnLatLngs)
                this.onNewVertex(vertex)
                this.refresh()
            },

            newPointForward: function(latlng) {
                this.addLatLng(latlng)
                this.tools.attachForwardLineGuide()
                this.tools.anchorForwardLineGuide(latlng)
            },

            newPointBackward: function(latlng) {
                this.addLatLng(latlng)
                this.tools.anchorBackwardLineGuide(latlng)
            },

            // 🍂namespace PathEditor
            // 🍂method push()
            // Programmatically add a point while drawing.
            push: function(latlng) {
                if (!latlng) return console.error('L.Editable.PathEditor.push expect a valid latlng as parameter')
                if (this._drawing === L.Editable.FORWARD) this.newPointForward(latlng)
                else this.newPointBackward(latlng)
            },

            removeLatLng: function(latlng) {
                latlng.__vertex.delete()
                this.refresh()
            },

            // 🍂method pop(): L.LatLng or null
            // Programmatically remove last point (if any) while drawing.
            pop: function() {
                if (this._drawnLatLngs.length <= 1) return
                let latlng
                if (this._drawing === L.Editable.FORWARD) latlng = this._drawnLatLngs[this._drawnLatLngs.length - 1]
                else latlng = this._drawnLatLngs[0]
                this.removeLatLng(latlng)
                if (this._drawing === L.Editable.FORWARD) this.tools.anchorForwardLineGuide(this._drawnLatLngs[this._drawnLatLngs.length - 1])
                else this.tools.anchorForwardLineGuide(this._drawnLatLngs[0])
                return latlng
            },

            processDrawingClick: function(e) {
                if (e.vertex && e.vertex.editor === this) return
                if (this._drawing === L.Editable.FORWARD) this.newPointForward(e.latlng)
                else this.newPointBackward(e.latlng)
                this.fireAndForward('editable:drawing:clicked', e)
            },

            onDrawingMouseMove: function(e) {
                L.Editable.BaseEditor.prototype.onDrawingMouseMove.call(this, e)
                if (this._drawing) {
                    this.tools.moveForwardLineGuide(e.latlng)
                    this.tools.moveBackwardLineGuide(e.latlng)
                }
            },

            refresh: function() {
                this.feature.redraw()
                this.onEditing()
            },

            // 🍂namespace PathEditor
            // 🍂method newShape(latlng?: L.LatLng)
            // Add a new shape (Polyline, Polygon) in a multi, and setup up drawing tools to draw it;
            // if optional `latlng` is given, start a path at this point.
            newShape: function(latlng) {
                let shape = this.addNewEmptyShape()
                if (!shape) return
                this.setDrawnLatLngs(shape[0] || shape) // Polygon or polyline
                this.startDrawingForward()
                // 🍂namespace Editable
                // 🍂section Shape events
                // 🍂event editable:shape:new: ShapeEvent
                // Fired when a new shape is created in a multi (Polygon or Polyline).
                this.fireAndForward('editable:shape:new', { shape: shape })
                if (latlng) this.newPointForward(latlng)
            },

            deleteShape: function(shape, latlngs) {
                let e = { shape: shape }
                L.Editable.makeCancellable(e)
                // 🍂namespace Editable
                // 🍂section Shape events
                // 🍂event editable:shape:delete: CancelableShapeEvent
                // Fired before a new shape is deleted in a multi (Polygon or Polyline).
                this.fireAndForward('editable:shape:delete', e)
                if (e._cancelled) return
                shape = this._deleteShape(shape, latlngs)
                if (this.ensureNotFlat) this.ensureNotFlat() // Polygon.
                this.feature.setLatLngs(this.getLatLngs()) // Force bounds reset.
                this.refresh()
                this.reset()
                // 🍂namespace Editable
                // 🍂section Shape events
                // 🍂event editable:shape:deleted: ShapeEvent
                // Fired after a new shape is deleted in a multi (Polygon or Polyline).
                this.fireAndForward('editable:shape:deleted', { shape: shape })
                return shape
            },

            _deleteShape: function(shape, latlngs) {
                latlngs = latlngs || this.getLatLngs()
                if (!latlngs.length) return
                let self = this
                let inplaceDelete = function(latlngs, shape) {
                    // Called when deleting a flat latlngs
                    shape = latlngs.splice(0, Number.MAX_VALUE)
                    return shape
                }
                let spliceDelete = function(latlngs, shape) {
                    // Called when removing a latlngs inside an array
                    latlngs.splice(latlngs.indexOf(shape), 1)
                    if (!latlngs.length) self._deleteShape(latlngs)
                    return shape
                }
                if (latlngs === shape) return inplaceDelete(latlngs, shape)
                for (let i = 0; i < latlngs.length; i++) {
                    if (latlngs[i] === shape) return spliceDelete(latlngs, shape)
                    else if (latlngs[i].indexOf(shape) !== -1) return spliceDelete(latlngs[i], shape)
                }
            },

            // 🍂namespace PathEditor
            // 🍂method deleteShapeAt(latlng: L.LatLng): Array
            // Remove a path shape at the given `latlng`.
            deleteShapeAt: function(latlng) {
                let shape = this.feature.shapeAt(latlng)
                if (shape) return this.deleteShape(shape)
            },

            // 🍂method appendShape(shape: Array)
            // Append a new shape to the Polygon or Polyline.
            appendShape: function(shape) {
                this.insertShape(shape)
            },

            // 🍂method prependShape(shape: Array)
            // Prepend a new shape to the Polygon or Polyline.
            prependShape: function(shape) {
                this.insertShape(shape, 0)
            },

            // 🍂method insertShape(shape: Array, index: int)
            // Insert a new shape to the Polygon or Polyline at given index (default is to append).
            insertShape: function(shape, index) {
                this.ensureMulti()
                shape = this.formatShape(shape)
                if (typeof index === 'undefined') index = this.feature._latlngs.length
                this.feature._latlngs.splice(index, 0, shape)
                this.feature.redraw()
                if (this._enabled) this.reset()
            },

            extendBounds: function(e) {
                this.feature._bounds.extend(e.vertex.latlng)
            },

            onDragStart: function(e) {
                this.editLayer.clearLayers()
                L.Editable.BaseEditor.prototype.onDragStart.call(this, e)
            },

            onDragEnd: function(e) {
                this.initVertexMarkers()
                L.Editable.BaseEditor.prototype.onDragEnd.call(this, e)
            }

        })

        // 🍂namespace Editable; 🍂class PolylineEditor; 🍂aka L.Editable.PolylineEditor
        // 🍂inherits PathEditor
        L.Editable.PolylineEditor = L.Editable.PathEditor.extend({

            startDrawingBackward: function() {
                this._drawing = L.Editable.BACKWARD
                this.startDrawing()
            },

            // 🍂method continueBackward(latlngs?: Array)
            // Set up drawing tools to continue the line backward.
            continueBackward: function(latlngs) {
                if (this.drawing()) return
                latlngs = latlngs || this.getDefaultLatLngs()
                this.setDrawnLatLngs(latlngs)
                if (latlngs.length > 0) {
                    this.tools.attachBackwardLineGuide()
                    this.tools.anchorBackwardLineGuide(latlngs[0])
                }
                this.startDrawingBackward()
            },

            // 🍂method continueForward(latlngs?: Array)
            // Set up drawing tools to continue the line forward.
            continueForward: function(latlngs) {
                if (this.drawing()) return
                latlngs = latlngs || this.getDefaultLatLngs()
                this.setDrawnLatLngs(latlngs)
                if (latlngs.length > 0) {
                    this.tools.attachForwardLineGuide()
                    this.tools.anchorForwardLineGuide(latlngs[latlngs.length - 1])
                }
                this.startDrawingForward()
            },

            getDefaultLatLngs: function(latlngs) {
                latlngs = latlngs || this.feature._latlngs
                if (!latlngs.length || latlngs[0] instanceof L.LatLng) return latlngs
                else return this.getDefaultLatLngs(latlngs[0])
            },

            ensureMulti: function() {
                if (this.feature._latlngs.length && isFlat(this.feature._latlngs)) {
                    this.feature._latlngs = [this.feature._latlngs]
                }
            },

            addNewEmptyShape: function() {
                if (this.feature._latlngs.length) {
                    let shape = []
                    this.appendShape(shape)
                    return shape
                } else {
                    return this.feature._latlngs
                }
            },

            formatShape: function(shape) {
                if (isFlat(shape)) return shape
                else if (shape[0]) return this.formatShape(shape[0])
            },

            // 🍂method splitShape(latlngs?: Array, index: int)
            // Split the given `latlngs` shape at index `index` and integrate new shape in instance `latlngs`.
            splitShape: function(shape, index) {
                if (!index || index >= shape.length - 1) return
                this.ensureMulti()
                let shapeIndex = this.feature._latlngs.indexOf(shape)
                if (shapeIndex === -1) return
                let first = shape.slice(0, index + 1)
                let second = shape.slice(index)
                // We deal with reference, we don't want twice the same latlng around.
                second[0] = L.latLng(second[0].lat, second[0].lng, second[0].alt)
                this.feature._latlngs.splice(shapeIndex, 1, first, second)
                this.refresh()
                this.reset()
            }

        })

        // 🍂namespace Editable; 🍂class PolygonEditor; 🍂aka L.Editable.PolygonEditor
        // 🍂inherits PathEditor
        L.Editable.PolygonEditor = L.Editable.PathEditor.extend({

            CLOSED: true,
            MIN_VERTEX: 3,

            newPointForward: function(latlng) {
                L.Editable.PathEditor.prototype.newPointForward.call(this, latlng)
                if (!this.tools.backwardLineGuide._latlngs.length) this.tools.anchorBackwardLineGuide(latlng)
                if (this._drawnLatLngs.length === 2) this.tools.attachBackwardLineGuide()
            },

            addNewEmptyHole: function(latlng) {
                this.ensureNotFlat()
                let latlngs = this.feature.shapeAt(latlng)
                if (!latlngs) return
                let holes = []
                latlngs.push(holes)
                return holes
            },

            // 🍂method newHole(latlng?: L.LatLng, index: int)
            // Set up drawing tools for creating a new hole on the Polygon. If the `latlng` param is given, a first point is created.
            newHole: function(latlng) {
                let holes = this.addNewEmptyHole(latlng)
                if (!holes) return
                this.setDrawnLatLngs(holes)
                this.startDrawingForward()
                if (latlng) this.newPointForward(latlng)
            },

            addNewEmptyShape: function() {
                if (this.feature._latlngs.length && this.feature._latlngs[0].length) {
                    let shape = []
                    this.appendShape(shape)
                    return shape
                } else {
                    return this.feature._latlngs
                }
            },

            ensureMulti: function() {
                if (this.feature._latlngs.length && isFlat(this.feature._latlngs[0])) {
                    this.feature._latlngs = [this.feature._latlngs]
                }
            },

            ensureNotFlat: function() {
                if (!this.feature._latlngs.length || isFlat(this.feature._latlngs)) this.feature._latlngs = [this.feature._latlngs]
            },

            vertexCanBeDeleted: function(vertex) {
                let parent = this.feature.parentShape(vertex.latlngs)
                let idx = L.Util.indexOf(parent, vertex.latlngs)
                if (idx > 0) return true // Holes can be totally deleted without removing the layer itself.
                return L.Editable.PathEditor.prototype.vertexCanBeDeleted.call(this, vertex)
            },

            getDefaultLatLngs: function() {
                if (!this.feature._latlngs.length) this.feature._latlngs.push([])
                return this.feature._latlngs[0]
            },

            formatShape: function(shape) {
                // [[1, 2], [3, 4]] => must be nested
                // [] => must be nested
                // [[]] => is already nested
                if (isFlat(shape) && (!shape[0] || shape[0].length !== 0)) return [shape]
                else return shape
            }

        })

        // 🍂namespace Editable; 🍂class RectangleEditor; 🍂aka L.Editable.RectangleEditor
        // 🍂inherits PathEditor
        L.Editable.RectangleEditor = L.Editable.PathEditor.extend({

            CLOSED: true,
            MIN_VERTEX: 4,

            options: {
                skipMiddleMarkers: true
            },

            extendBounds: function(e) {
                let index = e.vertex.getIndex()
                let next = e.vertex.getNext()
                let previous = e.vertex.getPrevious()
                let oppositeIndex = (index + 2) % 4
                let opposite = e.vertex.latlngs[oppositeIndex]
                let bounds = new L.LatLngBounds(e.latlng, opposite)
                // Update latlngs by hand to preserve order.
                previous.latlng.update([e.latlng.lat, opposite.lng])
                next.latlng.update([opposite.lat, e.latlng.lng])
                this.updateBounds(bounds)
                this.refreshVertexMarkers()
            },

            onDrawingMouseDown: function(e) {
                L.Editable.PathEditor.prototype.onDrawingMouseDown.call(this, e)
                this.connect()
                let latlngs = this.getDefaultLatLngs()
                // L.Polygon._convertLatLngs removes last latlng if it equals first point,
                // which is the case here as all latlngs are [0, 0]
                if (latlngs.length === 3) latlngs.push(e.latlng)
                let bounds = new L.LatLngBounds(e.latlng, e.latlng)
                this.updateBounds(bounds)
                this.updateLatLngs(bounds)
                this.refresh()
                this.reset()
                // Stop dragging map.
                // L.Draggable has two workflows:
                // - mousedown => mousemove => mouseup
                // - touchstart => touchmove => touchend
                // Problem: L.Map.Tap does not allow us to listen to touchstart, so we only
                // can deal with mousedown, but then when in a touch device, we are dealing with
                // simulated events (actually simulated by L.Map.Tap), which are no more taken
                // into account by L.Draggable.
                // Ref.: https://github.com/Leaflet/Leaflet.Editable/issues/103
                e.originalEvent._simulated = false
                this.map.dragging._draggable._onUp(e.originalEvent)
                // Now transfer ongoing drag action to the bottom right corner.
                // Should we refine which corner will handle the drag according to
                // drag direction?
                latlngs[3].__vertex.dragging._draggable._onDown(e.originalEvent)
            },

            onDrawingMouseUp: function(e) {
                this.commitDrawing(e)
                e.originalEvent._simulated = false
                L.Editable.PathEditor.prototype.onDrawingMouseUp.call(this, e)
            },

            onDrawingMouseMove: function(e) {
                e.originalEvent._simulated = false
                L.Editable.PathEditor.prototype.onDrawingMouseMove.call(this, e)
            },

            getDefaultLatLngs: function(latlngs) {
                return latlngs || this.feature._latlngs[0]
            },

            updateBounds: function(bounds) {
                this.feature._bounds = bounds
            },

            updateLatLngs: function(bounds) {
                let latlngs = this.getDefaultLatLngs()
                let newLatlngs = this.feature._boundsToLatLngs(bounds)
                // Keep references.
                for (let i = 0; i < latlngs.length; i++) {
                    latlngs[i].update(newLatlngs[i])
                }
            }

        })

        // 🍂namespace Editable; 🍂class CircleEditor; 🍂aka L.Editable.CircleEditor
        // 🍂inherits PathEditor
        L.Editable.CircleEditor = L.Editable.PathEditor.extend({

            MIN_VERTEX: 2,

            options: {
                skipMiddleMarkers: true
            },

            initialize: function(map, feature, options) {
                L.Editable.PathEditor.prototype.initialize.call(this, map, feature, options)
                // C.Y.B Modify

                let latlng = this.computeResizeLatLng()

                // latlng.lat = latlng.lat-0.007855;
                // latlng.lng= latlng.lng-0.1;
                this._resizeLatLng = latlng
                // 原始方法
                // this._resizeLatLng = this.computeResizeLatLng();
            },

            computeResizeLatLng: function() {
                // While circle is not added to the map, _radius is not set.
                // let delta = (this.feature._radius || this.feature._mRadius) * Math.cos(Math.PI / 4)
                let delta = (this.feature._radius || this.feature._mRadius)
                let point = this.map.project(this.feature._latlng)
                // return this.map.unproject([point.x + delta, point.y - delta])
                return this.map.unproject([point.x + delta, point.y])
            },

            updateResizeLatLng: function() {
                this._resizeLatLng.update(this.computeResizeLatLng())
                this._resizeLatLng.__vertex.update()
            },

            getLatLngs: function() {
                return [this.feature._latlng, this._resizeLatLng]
            },

            getDefaultLatLngs: function() {
                return this.getLatLngs()
            },

            onVertexMarkerDrag: function(e) {
                if (e.vertex.getIndex() === 1) this.resize(e)
                else this.updateResizeLatLng(e)
                L.Editable.PathEditor.prototype.onVertexMarkerDrag.call(this, e)
            },

            resize: function(e) {
                let radius = this.feature._latlng.distanceTo(e.latlng)
                this.feature.setRadius(radius)
            },

            onDrawingMouseDown: function(e) {
                L.Editable.PathEditor.prototype.onDrawingMouseDown.call(this, e)
                this._resizeLatLng.update(e.latlng)
                this.feature._latlng.update(e.latlng)
                this.connect()
                // Stop dragging map.
                e.originalEvent._simulated = false
                this.map.dragging._draggable._onUp(e.originalEvent)
                // Now transfer ongoing drag action to the radius handler.
                this._resizeLatLng.__vertex.dragging._draggable._onDown(e.originalEvent)
            },

            onDrawingMouseUp: function(e) {
                this.commitDrawing(e)
                e.originalEvent._simulated = false
                L.Editable.PathEditor.prototype.onDrawingMouseUp.call(this, e)
            },

            onDrawingMouseMove: function(e) {
                e.originalEvent._simulated = false
                L.Editable.PathEditor.prototype.onDrawingMouseMove.call(this, e)
            },

            onDrag: function(e) {
                L.Editable.PathEditor.prototype.onDrag.call(this, e)
                this.feature.dragging.updateLatLng(this._resizeLatLng)
            }

        })

        // 🍂namespace Editable; 🍂class EditableMixin
        // `EditableMixin` is included to `L.Polyline`, `L.Polygon`, `L.Rectangle`, `L.Circle`
        // and `L.Marker`. It adds some methods to them.
        // *When editing is enabled, the editor is accessible on the instance with the
        // `editor` property.*
        let EditableMixin = {

            createEditor: function(map) {
                map = map || this._map
                let tools = (this.options.editOptions || {}).editTools || map.editTools
                if (!tools) throw Error('Unable to detect Editable instance.')
                let Klass = this.options.editorClass || this.getEditorClass(tools)
                return new Klass(map, this, this.options.editOptions)
            },

            // 🍂method enableEdit(map?: L.Map): this.editor
            // Enable editing, by creating an editor if not existing, and then calling `enable` on it.
            enableEdit: function(map) {
                if (!this.editor) this.createEditor(map)
                this.editor.enable()
                return this.editor
            },

            // 🍂method editEnabled(): boolean
            // Return true if current instance has an editor attached, and this editor is enabled.
            editEnabled: function() {
                return this.editor && this.editor.enabled()
            },

            // 🍂method disableEdit()
            // Disable editing, also remove the editor property reference.
            disableEdit: function() {
                if (this.editor) {
                    this.editor.disable()
                    delete this.editor
                }
            },

            // 🍂method toggleEdit()
            // Enable or disable editing, according to current status.
            toggleEdit: function() {
                if (this.editEnabled()) this.disableEdit()
                else this.enableEdit()
            },

            _onEditableAdd: function() {
                if (this.editor) this.enableEdit()
            }

        }

        let PolylineMixin = {

            getEditorClass: function(tools) {
                return (tools && tools.options.polylineEditorClass) ? tools.options.polylineEditorClass : L.Editable.PolylineEditor
            },

            shapeAt: function(latlng, latlngs) {
                // We can have those cases:
                // - latlngs are just a flat array of latlngs, use this
                // - latlngs is an array of arrays of latlngs, loop over
                let shape = null
                latlngs = latlngs || this._latlngs
                if (!latlngs.length) return shape
                else if (isFlat(latlngs) && this.isInLatLngs(latlng, latlngs)) shape = latlngs
                else for (let i = 0; i < latlngs.length; i++) if (this.isInLatLngs(latlng, latlngs[i])) return latlngs[i]
                return shape
            },

            isInLatLngs: function(l, latlngs) {
                if (!latlngs) return false
                let i, k, len
                let part = []
                let p
                let w = this._clickTolerance()
                this._projectLatlngs(latlngs, part, this._pxBounds)
                part = part[0]
                p = this._map.latLngToLayerPoint(l)

                if (!this._pxBounds.contains(p)) {
                    return false
                }
                for (i = 1, len = part.length, k = 0; i < len; k = i++) {
                    if (L.LineUtil.pointToSegmentDistance(p, part[k], part[i]) <= w) {
                        return true
                    }
                }
                return false
            }

        }

        let PolygonMixin = {

            getEditorClass: function(tools) {
                return (tools && tools.options.polygonEditorClass) ? tools.options.polygonEditorClass : L.Editable.PolygonEditor
            },

            shapeAt: function(latlng, latlngs) {
                // We can have those cases:
                // - latlngs are just a flat array of latlngs, use this
                // - latlngs is an array of arrays of latlngs, this is a simple polygon (maybe with holes), use the first
                // - latlngs is an array of arrays of arrays, this is a multi, loop over
                let shape = null
                latlngs = latlngs || this._latlngs
                if (!latlngs.length) return shape
                else if (isFlat(latlngs) && this.isInLatLngs(latlng, latlngs)) shape = latlngs
                else if (isFlat(latlngs[0]) && this.isInLatLngs(latlng, latlngs[0])) shape = latlngs
                else for (let i = 0; i < latlngs.length; i++) if (this.isInLatLngs(latlng, latlngs[i][0])) return latlngs[i]
                return shape
            },

            isInLatLngs: function(l, latlngs) {
                let inside = false
                let l1
                let l2
                let j
                let k
                let len2
                for (j = 0, len2 = latlngs.length, k = len2 - 1; j < len2; k = j++) {
                    l1 = latlngs[j]
                    l2 = latlngs[k]

                    if (((l1.lat > l.lat) !== (l2.lat > l.lat)) &&
                        (l.lng < (l2.lng - l1.lng) * (l.lat - l1.lat) / (l2.lat - l1.lat) + l1.lng)) {
                        inside = !inside
                    }
                }

                return inside
            },

            parentShape: function(shape, latlngs) {
                latlngs = latlngs || this._latlngs
                if (!latlngs) return
                let idx = L.Util.indexOf(latlngs, shape)
                if (idx !== -1) return latlngs
                for (let i = 0; i < latlngs.length; i++) {
                    idx = L.Util.indexOf(latlngs[i], shape)
                    if (idx !== -1) return latlngs[i]
                }
            }

        }

        let MarkerMixin = {

            getEditorClass: function(tools) {
                return (tools && tools.options.markerEditorClass) ? tools.options.markerEditorClass : L.Editable.MarkerEditor
            }

        }

        let RectangleMixin = {

            getEditorClass: function(tools) {
                return (tools && tools.options.rectangleEditorClass) ? tools.options.rectangleEditorClass : L.Editable.RectangleEditor
            }

        }

        let CircleMixin = {

            getEditorClass: function(tools) {
                return (tools && tools.options.circleEditorClass) ? tools.options.circleEditorClass : L.Editable.CircleEditor
            }

        }

        let keepEditable = function() {
            // Make sure you can remove/readd an editable layer.
            this.on('add', this._onEditableAdd)
        }

        let isFlat = L.LineUtil.isFlat || L.LineUtil._flat || L.Polyline._flat // <=> 1.1 compat.

        if (L.Polyline) {
            L.Polyline.include(EditableMixin)
            L.Polyline.include(PolylineMixin)
            L.Polyline.addInitHook(keepEditable)
        }
        if (L.Polygon) {
            L.Polygon.include(EditableMixin)
            L.Polygon.include(PolygonMixin)
        }
        if (L.Marker) {
            L.Marker.include(EditableMixin)
            L.Marker.include(MarkerMixin)
            L.Marker.addInitHook(keepEditable)
        }
        if (L.Rectangle) {
            L.Rectangle.include(EditableMixin)
            L.Rectangle.include(RectangleMixin)
        }
        if (L.Circle) {
            L.Circle.include(EditableMixin)
            L.Circle.include(CircleMixin)
        }

        L.LatLng.prototype.update = function(latlng) {
            latlng = L.latLng(latlng)
            this.lat = latlng.lat
            this.lng = latlng.lng
        }
    }, window))
}

export default {
    init
}