first commit

frontend/node_modules/leaflet/src/map/Map.methodOptions.leafdoc

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+
+This file documents the common options passed to several map methods.
+
+
+@miniclass Locate options (Map)
+@aka locate options
+@section
+
+Some of the geolocation methods for `Map` take in an `options` parameter. This
+is a plain javascript object with the following optional components:
+
+@option watch: Boolean = false
+If `true`, starts continuous watching of location changes (instead of detecting it
+once) using W3C `watchPosition` method. You can later stop watching using
+`map.stopLocate()` method.
+
+
+@option setView: Boolean = false
+If `true`, automatically sets the map view to the user location with respect to
+detection accuracy, or to world view if geolocation failed.
+
+@option maxZoom: Number = Infinity
+The maximum zoom for automatic view setting when using `setView` option.
+
+@option timeout: Number = 10000
+Number of milliseconds to wait for a response from geolocation before firing a
+`locationerror` event.
+
+@option maximumAge: Number = 0
+Maximum age of detected location. If less than this amount of milliseconds
+passed since last geolocation response, `locate` will return a cached location.
+
+@option enableHighAccuracy: Boolean = false
+Enables high accuracy, see [description in the W3C spec](https://w3c.github.io/geolocation-api/#enablehighaccuracy-member).
+
+
+
+@miniclass Zoom options (Map)
+@aka zoom options
+@section
+
+Some of the `Map` methods which modify the zoom level take in an `options`
+parameter. This is a plain javascript object with the following optional
+components:
+
+
+@option animate: Boolean
+If not specified, zoom animation will happen if the zoom origin is inside the
+current view. If `true`, the map will attempt animating zoom disregarding where
+zoom origin is. Setting `false` will make it always reset the view completely
+without animation.
+
+
+
+
+@miniclass Pan options (Map)
+@aka pan options
+@section
+
+Some of the `Map` methods which modify the center of the map take in an `options`
+parameter. This is a plain javascript object with the following optional
+components:
+
+@option animate: Boolean
+If `true`, panning will always be animated if possible. If `false`, it will
+not animate panning, either resetting the map view if panning more than a
+screen away, or just setting a new offset for the map pane (except for `panBy`
+which always does the latter).
+
+@option duration: Number = 0.25
+Duration of animated panning, in seconds.
+
+@option easeLinearity: Number = 0.25
+The curvature factor of panning animation easing (third parameter of the
+[Cubic Bezier curve](https://cubic-bezier.com/)). 1.0 means linear animation,
+and the smaller this number, the more bowed the curve.
+
+@option noMoveStart: Boolean = false
+If `true`, panning won't fire `movestart` event on start (used internally for
+panning inertia).
+
+
+@miniclass Zoom/pan options (Map)
+@aka zoom/pan options
+@inherits Zoom options
+@inherits Pan options
+
+
+@miniclass Padding options (Map)
+@aka padding options
+@option paddingTopLeft: Point = [0, 0]
+Sets the amount of padding in the top left corner of a map container that
+shouldn't be accounted for when setting the view to fit bounds. Useful if you
+have some control overlays on the map like a sidebar and you don't want them
+to obscure objects you're zooming to.
+
+@option paddingBottomRight: Point = [0, 0]
+The same for the bottom right corner of the map.
+
+@option padding: Point = [0, 0]
+Equivalent of setting both top left and bottom right padding to the same value.
+
+
+@miniclass FitBounds options (Map)
+@aka fitBounds options
+@inherits Zoom/pan options
+@inherits Padding options
+
+@option maxZoom: Number = null
+The maximum possible zoom to use.
+
+

frontend/node_modules/leaflet/src/map/handler/Map.BoxZoom.js

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+import {Map} from '../Map';
+import {Handler} from '../../core/Handler';
+import * as Util from '../../core/Util';
+import * as DomUtil from '../../dom/DomUtil';
+import * as DomEvent from '../../dom/DomEvent';
+import {LatLngBounds} from '../../geo/LatLngBounds';
+import {Bounds} from '../../geometry/Bounds';
+
+/*
+ * L.Handler.BoxZoom is used to add shift-drag zoom interaction to the map
+ * (zoom to a selected bounding box), enabled by default.
+ */
+
+// @namespace Map
+// @section Interaction Options
+Map.mergeOptions({
+	// @option boxZoom: Boolean = true
+	// Whether the map can be zoomed to a rectangular area specified by
+	// dragging the mouse while pressing the shift key.
+	boxZoom: true
+});
+
+export var BoxZoom = Handler.extend({
+	initialize: function (map) {
+		this._map = map;
+		this._container = map._container;
+		this._pane = map._panes.overlayPane;
+		this._resetStateTimeout = 0;
+		map.on('unload', this._destroy, this);
+	},
+
+	addHooks: function () {
+		DomEvent.on(this._container, 'mousedown', this._onMouseDown, this);
+	},
+
+	removeHooks: function () {
+		DomEvent.off(this._container, 'mousedown', this._onMouseDown, this);
+	},
+
+	moved: function () {
+		return this._moved;
+	},
+
+	_destroy: function () {
+		DomUtil.remove(this._pane);
+		delete this._pane;
+	},
+
+	_resetState: function () {
+		this._resetStateTimeout = 0;
+		this._moved = false;
+	},
+
+	_clearDeferredResetState: function () {
+		if (this._resetStateTimeout !== 0) {
+			clearTimeout(this._resetStateTimeout);
+			this._resetStateTimeout = 0;
+		}
+	},
+
+	_onMouseDown: function (e) {
+		if (!e.shiftKey || ((e.which !== 1) && (e.button !== 1))) { return false; }
+
+		// Clear the deferred resetState if it hasn't executed yet, otherwise it
+		// will interrupt the interaction and orphan a box element in the container.
+		this._clearDeferredResetState();
+		this._resetState();
+
+		DomUtil.disableTextSelection();
+		DomUtil.disableImageDrag();
+
+		this._startPoint = this._map.mouseEventToContainerPoint(e);
+
+		DomEvent.on(document, {
+			contextmenu: DomEvent.stop,
+			mousemove: this._onMouseMove,
+			mouseup: this._onMouseUp,
+			keydown: this._onKeyDown
+		}, this);
+	},
+
+	_onMouseMove: function (e) {
+		if (!this._moved) {
+			this._moved = true;
+
+			this._box = DomUtil.create('div', 'leaflet-zoom-box', this._container);
+			DomUtil.addClass(this._container, 'leaflet-crosshair');
+
+			this._map.fire('boxzoomstart');
+		}
+
+		this._point = this._map.mouseEventToContainerPoint(e);
+
+		var bounds = new Bounds(this._point, this._startPoint),
+		    size = bounds.getSize();
+
+		DomUtil.setPosition(this._box, bounds.min);
+
+		this._box.style.width  = size.x + 'px';
+		this._box.style.height = size.y + 'px';
+	},
+
+	_finish: function () {
+		if (this._moved) {
+			DomUtil.remove(this._box);
+			DomUtil.removeClass(this._container, 'leaflet-crosshair');
+		}
+
+		DomUtil.enableTextSelection();
+		DomUtil.enableImageDrag();
+
+		DomEvent.off(document, {
+			contextmenu: DomEvent.stop,
+			mousemove: this._onMouseMove,
+			mouseup: this._onMouseUp,
+			keydown: this._onKeyDown
+		}, this);
+	},
+
+	_onMouseUp: function (e) {
+		if ((e.which !== 1) && (e.button !== 1)) { return; }
+
+		this._finish();
+
+		if (!this._moved) { return; }
+		// Postpone to next JS tick so internal click event handling
+		// still see it as "moved".
+		this._clearDeferredResetState();
+		this._resetStateTimeout = setTimeout(Util.bind(this._resetState, this), 0);
+
+		var bounds = new LatLngBounds(
+		        this._map.containerPointToLatLng(this._startPoint),
+		        this._map.containerPointToLatLng(this._point));
+
+		this._map
+			.fitBounds(bounds)
+			.fire('boxzoomend', {boxZoomBounds: bounds});
+	},
+
+	_onKeyDown: function (e) {
+		if (e.keyCode === 27) {
+			this._finish();
+			this._clearDeferredResetState();
+			this._resetState();
+		}
+	}
+});
+
+// @section Handlers
+// @property boxZoom: Handler
+// Box (shift-drag with mouse) zoom handler.
+Map.addInitHook('addHandler', 'boxZoom', BoxZoom);

frontend/node_modules/leaflet/src/map/handler/Map.DoubleClickZoom.js

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+import {Map} from '../Map';
+import {Handler} from '../../core/Handler';
+
+/*
+ * L.Handler.DoubleClickZoom is used to handle double-click zoom on the map, enabled by default.
+ */
+
+// @namespace Map
+// @section Interaction Options
+
+Map.mergeOptions({
+	// @option doubleClickZoom: Boolean|String = true
+	// Whether the map can be zoomed in by double clicking on it and
+	// zoomed out by double clicking while holding shift. If passed
+	// `'center'`, double-click zoom will zoom to the center of the
+	//  view regardless of where the mouse was.
+	doubleClickZoom: true
+});
+
+export var DoubleClickZoom = Handler.extend({
+	addHooks: function () {
+		this._map.on('dblclick', this._onDoubleClick, this);
+	},
+
+	removeHooks: function () {
+		this._map.off('dblclick', this._onDoubleClick, this);
+	},
+
+	_onDoubleClick: function (e) {
+		var map = this._map,
+		    oldZoom = map.getZoom(),
+		    delta = map.options.zoomDelta,
+		    zoom = e.originalEvent.shiftKey ? oldZoom - delta : oldZoom + delta;
+
+		if (map.options.doubleClickZoom === 'center') {
+			map.setZoom(zoom);
+		} else {
+			map.setZoomAround(e.containerPoint, zoom);
+		}
+	}
+});
+
+// @section Handlers
+//
+// Map properties include interaction handlers that allow you to control
+// interaction behavior in runtime, enabling or disabling certain features such
+// as dragging or touch zoom (see `Handler` methods). For example:
+//
+// ```js
+// map.doubleClickZoom.disable();
+// ```
+//
+// @property doubleClickZoom: Handler
+// Double click zoom handler.
+Map.addInitHook('addHandler', 'doubleClickZoom', DoubleClickZoom);

frontend/node_modules/leaflet/src/map/handler/Map.Drag.js

@@ -0,0 +1,235 @@
+import {Map} from '../Map';
+import {Handler} from '../../core/Handler';
+import {Draggable} from '../../dom/Draggable';
+import * as Util from '../../core/Util';
+import * as DomUtil from '../../dom/DomUtil';
+import {toLatLngBounds as latLngBounds} from '../../geo/LatLngBounds';
+import {toBounds} from '../../geometry/Bounds';
+
+/*
+ * L.Handler.MapDrag is used to make the map draggable (with panning inertia), enabled by default.
+ */
+
+// @namespace Map
+// @section Interaction Options
+Map.mergeOptions({
+	// @option dragging: Boolean = true
+	// Whether the map is draggable with mouse/touch or not.
+	dragging: true,
+
+	// @section Panning Inertia Options
+	// @option inertia: Boolean = *
+	// If enabled, panning of the map will have an inertia effect where
+	// the map builds momentum while dragging and continues moving in
+	// the same direction for some time. Feels especially nice on touch
+	// devices. Enabled by default.
+	inertia: true,
+
+	// @option inertiaDeceleration: Number = 3000
+	// The rate with which the inertial movement slows down, in pixels/second².
+	inertiaDeceleration: 3400, // px/s^2
+
+	// @option inertiaMaxSpeed: Number = Infinity
+	// Max speed of the inertial movement, in pixels/second.
+	inertiaMaxSpeed: Infinity, // px/s
+
+	// @option easeLinearity: Number = 0.2
+	easeLinearity: 0.2,
+
+	// TODO refactor, move to CRS
+	// @option worldCopyJump: Boolean = false
+	// With this option enabled, the map tracks when you pan to another "copy"
+	// of the world and seamlessly jumps to the original one so that all overlays
+	// like markers and vector layers are still visible.
+	worldCopyJump: false,
+
+	// @option maxBoundsViscosity: Number = 0.0
+	// If `maxBounds` is set, this option will control how solid the bounds
+	// are when dragging the map around. The default value of `0.0` allows the
+	// user to drag outside the bounds at normal speed, higher values will
+	// slow down map dragging outside bounds, and `1.0` makes the bounds fully
+	// solid, preventing the user from dragging outside the bounds.
+	maxBoundsViscosity: 0.0
+});
+
+export var Drag = Handler.extend({
+	addHooks: function () {
+		if (!this._draggable) {
+			var map = this._map;
+
+			this._draggable = new Draggable(map._mapPane, map._container);
+
+			this._draggable.on({
+				dragstart: this._onDragStart,
+				drag: this._onDrag,
+				dragend: this._onDragEnd
+			}, this);
+
+			this._draggable.on('predrag', this._onPreDragLimit, this);
+			if (map.options.worldCopyJump) {
+				this._draggable.on('predrag', this._onPreDragWrap, this);
+				map.on('zoomend', this._onZoomEnd, this);
+
+				map.whenReady(this._onZoomEnd, this);
+			}
+		}
+		DomUtil.addClass(this._map._container, 'leaflet-grab leaflet-touch-drag');
+		this._draggable.enable();
+		this._positions = [];
+		this._times = [];
+	},
+
+	removeHooks: function () {
+		DomUtil.removeClass(this._map._container, 'leaflet-grab');
+		DomUtil.removeClass(this._map._container, 'leaflet-touch-drag');
+		this._draggable.disable();
+	},
+
+	moved: function () {
+		return this._draggable && this._draggable._moved;
+	},
+
+	moving: function () {
+		return this._draggable && this._draggable._moving;
+	},
+
+	_onDragStart: function () {
+		var map = this._map;
+
+		map._stop();
+		if (this._map.options.maxBounds && this._map.options.maxBoundsViscosity) {
+			var bounds = latLngBounds(this._map.options.maxBounds);
+
+			this._offsetLimit = toBounds(
+				this._map.latLngToContainerPoint(bounds.getNorthWest()).multiplyBy(-1),
+				this._map.latLngToContainerPoint(bounds.getSouthEast()).multiplyBy(-1)
+					.add(this._map.getSize()));
+
+			this._viscosity = Math.min(1.0, Math.max(0.0, this._map.options.maxBoundsViscosity));
+		} else {
+			this._offsetLimit = null;
+		}
+
+		map
+		    .fire('movestart')
+		    .fire('dragstart');
+
+		if (map.options.inertia) {
+			this._positions = [];
+			this._times = [];
+		}
+	},
+
+	_onDrag: function (e) {
+		if (this._map.options.inertia) {
+			var time = this._lastTime = +new Date(),
+			    pos = this._lastPos = this._draggable._absPos || this._draggable._newPos;
+
+			this._positions.push(pos);
+			this._times.push(time);
+
+			this._prunePositions(time);
+		}
+
+		this._map
+		    .fire('move', e)
+		    .fire('drag', e);
+	},
+
+	_prunePositions: function (time) {
+		while (this._positions.length > 1 && time - this._times[0] > 50) {
+			this._positions.shift();
+			this._times.shift();
+		}
+	},
+
+	_onZoomEnd: function () {
+		var pxCenter = this._map.getSize().divideBy(2),
+		    pxWorldCenter = this._map.latLngToLayerPoint([0, 0]);
+
+		this._initialWorldOffset = pxWorldCenter.subtract(pxCenter).x;
+		this._worldWidth = this._map.getPixelWorldBounds().getSize().x;
+	},
+
+	_viscousLimit: function (value, threshold) {
+		return value - (value - threshold) * this._viscosity;
+	},
+
+	_onPreDragLimit: function () {
+		if (!this._viscosity || !this._offsetLimit) { return; }
+
+		var offset = this._draggable._newPos.subtract(this._draggable._startPos);
+
+		var limit = this._offsetLimit;
+		if (offset.x < limit.min.x) { offset.x = this._viscousLimit(offset.x, limit.min.x); }
+		if (offset.y < limit.min.y) { offset.y = this._viscousLimit(offset.y, limit.min.y); }
+		if (offset.x > limit.max.x) { offset.x = this._viscousLimit(offset.x, limit.max.x); }
+		if (offset.y > limit.max.y) { offset.y = this._viscousLimit(offset.y, limit.max.y); }
+
+		this._draggable._newPos = this._draggable._startPos.add(offset);
+	},
+
+	_onPreDragWrap: function () {
+		// TODO refactor to be able to adjust map pane position after zoom
+		var worldWidth = this._worldWidth,
+		    halfWidth = Math.round(worldWidth / 2),
+		    dx = this._initialWorldOffset,
+		    x = this._draggable._newPos.x,
+		    newX1 = (x - halfWidth + dx) % worldWidth + halfWidth - dx,
+		    newX2 = (x + halfWidth + dx) % worldWidth - halfWidth - dx,
+		    newX = Math.abs(newX1 + dx) < Math.abs(newX2 + dx) ? newX1 : newX2;
+
+		this._draggable._absPos = this._draggable._newPos.clone();
+		this._draggable._newPos.x = newX;
+	},
+
+	_onDragEnd: function (e) {
+		var map = this._map,
+		    options = map.options,
+
+		    noInertia = !options.inertia || e.noInertia || this._times.length < 2;
+
+		map.fire('dragend', e);
+
+		if (noInertia) {
+			map.fire('moveend');
+
+		} else {
+			this._prunePositions(+new Date());
+
+			var direction = this._lastPos.subtract(this._positions[0]),
+			    duration = (this._lastTime - this._times[0]) / 1000,
+			    ease = options.easeLinearity,
+
+			    speedVector = direction.multiplyBy(ease / duration),
+			    speed = speedVector.distanceTo([0, 0]),
+
+			    limitedSpeed = Math.min(options.inertiaMaxSpeed, speed),
+			    limitedSpeedVector = speedVector.multiplyBy(limitedSpeed / speed),
+
+			    decelerationDuration = limitedSpeed / (options.inertiaDeceleration * ease),
+			    offset = limitedSpeedVector.multiplyBy(-decelerationDuration / 2).round();
+
+			if (!offset.x && !offset.y) {
+				map.fire('moveend');
+
+			} else {
+				offset = map._limitOffset(offset, map.options.maxBounds);
+
+				Util.requestAnimFrame(function () {
+					map.panBy(offset, {
+						duration: decelerationDuration,
+						easeLinearity: ease,
+						noMoveStart: true,
+						animate: true
+					});
+				});
+			}
+		}
+	}
+});
+
+// @section Handlers
+// @property dragging: Handler
+// Map dragging handler (by both mouse and touch).
+Map.addInitHook('addHandler', 'dragging', Drag);

frontend/node_modules/leaflet/src/map/handler/Map.Keyboard.js

@@ -0,0 +1,183 @@
+import {Map} from '../Map';
+import {Handler} from '../../core/Handler';
+import {on, off, stop} from '../../dom/DomEvent';
+import {toPoint} from '../../geometry/Point';
+
+
+/*
+ * L.Map.Keyboard is handling keyboard interaction with the map, enabled by default.
+ */
+
+// @namespace Map
+// @section Keyboard Navigation Options
+Map.mergeOptions({
+	// @option keyboard: Boolean = true
+	// Makes the map focusable and allows users to navigate the map with keyboard
+	// arrows and `+`/`-` keys.
+	keyboard: true,
+
+	// @option keyboardPanDelta: Number = 80
+	// Amount of pixels to pan when pressing an arrow key.
+	keyboardPanDelta: 80
+});
+
+export var Keyboard = Handler.extend({
+
+	keyCodes: {
+		left:    [37],
+		right:   [39],
+		down:    [40],
+		up:      [38],
+		zoomIn:  [187, 107, 61, 171],
+		zoomOut: [189, 109, 54, 173]
+	},
+
+	initialize: function (map) {
+		this._map = map;
+
+		this._setPanDelta(map.options.keyboardPanDelta);
+		this._setZoomDelta(map.options.zoomDelta);
+	},
+
+	addHooks: function () {
+		var container = this._map._container;
+
+		// make the container focusable by tabbing
+		if (container.tabIndex <= 0) {
+			container.tabIndex = '0';
+		}
+
+		on(container, {
+			focus: this._onFocus,
+			blur: this._onBlur,
+			mousedown: this._onMouseDown
+		}, this);
+
+		this._map.on({
+			focus: this._addHooks,
+			blur: this._removeHooks
+		}, this);
+	},
+
+	removeHooks: function () {
+		this._removeHooks();
+
+		off(this._map._container, {
+			focus: this._onFocus,
+			blur: this._onBlur,
+			mousedown: this._onMouseDown
+		}, this);
+
+		this._map.off({
+			focus: this._addHooks,
+			blur: this._removeHooks
+		}, this);
+	},
+
+	_onMouseDown: function () {
+		if (this._focused) { return; }
+
+		var body = document.body,
+		    docEl = document.documentElement,
+		    top = body.scrollTop || docEl.scrollTop,
+		    left = body.scrollLeft || docEl.scrollLeft;
+
+		this._map._container.focus();
+
+		window.scrollTo(left, top);
+	},
+
+	_onFocus: function () {
+		this._focused = true;
+		this._map.fire('focus');
+	},
+
+	_onBlur: function () {
+		this._focused = false;
+		this._map.fire('blur');
+	},
+
+	_setPanDelta: function (panDelta) {
+		var keys = this._panKeys = {},
+		    codes = this.keyCodes,
+		    i, len;
+
+		for (i = 0, len = codes.left.length; i < len; i++) {
+			keys[codes.left[i]] = [-1 * panDelta, 0];
+		}
+		for (i = 0, len = codes.right.length; i < len; i++) {
+			keys[codes.right[i]] = [panDelta, 0];
+		}
+		for (i = 0, len = codes.down.length; i < len; i++) {
+			keys[codes.down[i]] = [0, panDelta];
+		}
+		for (i = 0, len = codes.up.length; i < len; i++) {
+			keys[codes.up[i]] = [0, -1 * panDelta];
+		}
+	},
+
+	_setZoomDelta: function (zoomDelta) {
+		var keys = this._zoomKeys = {},
+		    codes = this.keyCodes,
+		    i, len;
+
+		for (i = 0, len = codes.zoomIn.length; i < len; i++) {
+			keys[codes.zoomIn[i]] = zoomDelta;
+		}
+		for (i = 0, len = codes.zoomOut.length; i < len; i++) {
+			keys[codes.zoomOut[i]] = -zoomDelta;
+		}
+	},
+
+	_addHooks: function () {
+		on(document, 'keydown', this._onKeyDown, this);
+	},
+
+	_removeHooks: function () {
+		off(document, 'keydown', this._onKeyDown, this);
+	},
+
+	_onKeyDown: function (e) {
+		if (e.altKey || e.ctrlKey || e.metaKey) { return; }
+
+		var key = e.keyCode,
+		    map = this._map,
+		    offset;
+
+		if (key in this._panKeys) {
+			if (!map._panAnim || !map._panAnim._inProgress) {
+				offset = this._panKeys[key];
+				if (e.shiftKey) {
+					offset = toPoint(offset).multiplyBy(3);
+				}
+
+				if (map.options.maxBounds) {
+					offset = map._limitOffset(toPoint(offset), map.options.maxBounds);
+				}
+
+				if (map.options.worldCopyJump) {
+					var newLatLng = map.wrapLatLng(map.unproject(map.project(map.getCenter()).add(offset)));
+					map.panTo(newLatLng);
+				} else {
+					map.panBy(offset);
+				}
+			}
+		} else if (key in this._zoomKeys) {
+			map.setZoom(map.getZoom() + (e.shiftKey ? 3 : 1) * this._zoomKeys[key]);
+
+		} else if (key === 27 && map._popup && map._popup.options.closeOnEscapeKey) {
+			map.closePopup();
+
+		} else {
+			return;
+		}
+
+		stop(e);
+	}
+});
+
+// @section Handlers
+// @section Handlers
+// @property keyboard: Handler
+// Keyboard navigation handler.
+Map.addInitHook('addHandler', 'keyboard', Keyboard);

frontend/node_modules/leaflet/src/map/handler/Map.ScrollWheelZoom.js

@@ -0,0 +1,91 @@
+import {Map} from '../Map';
+import {Handler} from '../../core/Handler';
+import * as DomEvent from '../../dom/DomEvent';
+import * as Util from '../../core/Util';
+
+/*
+ * L.Handler.ScrollWheelZoom is used by L.Map to enable mouse scroll wheel zoom on the map.
+ */
+
+// @namespace Map
+// @section Interaction Options
+Map.mergeOptions({
+	// @section Mouse wheel options
+	// @option scrollWheelZoom: Boolean|String = true
+	// Whether the map can be zoomed by using the mouse wheel. If passed `'center'`,
+	// it will zoom to the center of the view regardless of where the mouse was.
+	scrollWheelZoom: true,
+
+	// @option wheelDebounceTime: Number = 40
+	// Limits the rate at which a wheel can fire (in milliseconds). By default
+	// user can't zoom via wheel more often than once per 40 ms.
+	wheelDebounceTime: 40,
+
+	// @option wheelPxPerZoomLevel: Number = 60
+	// How many scroll pixels (as reported by [L.DomEvent.getWheelDelta](#domevent-getwheeldelta))
+	// mean a change of one full zoom level. Smaller values will make wheel-zooming
+	// faster (and vice versa).
+	wheelPxPerZoomLevel: 60
+});
+
+export var ScrollWheelZoom = Handler.extend({
+	addHooks: function () {
+		DomEvent.on(this._map._container, 'wheel', this._onWheelScroll, this);
+
+		this._delta = 0;
+	},
+
+	removeHooks: function () {
+		DomEvent.off(this._map._container, 'wheel', this._onWheelScroll, this);
+	},
+
+	_onWheelScroll: function (e) {
+		var delta = DomEvent.getWheelDelta(e);
+
+		var debounce = this._map.options.wheelDebounceTime;
+
+		this._delta += delta;
+		this._lastMousePos = this._map.mouseEventToContainerPoint(e);
+
+		if (!this._startTime) {
+			this._startTime = +new Date();
+		}
+
+		var left = Math.max(debounce - (+new Date() - this._startTime), 0);
+
+		clearTimeout(this._timer);
+		this._timer = setTimeout(Util.bind(this._performZoom, this), left);
+
+		DomEvent.stop(e);
+	},
+
+	_performZoom: function () {
+		var map = this._map,
+		    zoom = map.getZoom(),
+		    snap = this._map.options.zoomSnap || 0;
+
+		map._stop(); // stop panning and fly animations if any
+
+		// map the delta with a sigmoid function to -4..4 range leaning on -1..1
+		var d2 = this._delta / (this._map.options.wheelPxPerZoomLevel * 4),
+		    d3 = 4 * Math.log(2 / (1 + Math.exp(-Math.abs(d2)))) / Math.LN2,
+		    d4 = snap ? Math.ceil(d3 / snap) * snap : d3,
+		    delta = map._limitZoom(zoom + (this._delta > 0 ? d4 : -d4)) - zoom;
+
+		this._delta = 0;
+		this._startTime = null;
+
+		if (!delta) { return; }
+
+		if (map.options.scrollWheelZoom === 'center') {
+			map.setZoom(zoom + delta);
+		} else {
+			map.setZoomAround(this._lastMousePos, zoom + delta);
+		}
+	}
+});
+
+// @section Handlers
+// @property scrollWheelZoom: Handler
+// Scroll wheel zoom handler.
+Map.addInitHook('addHandler', 'scrollWheelZoom', ScrollWheelZoom);

frontend/node_modules/leaflet/src/map/handler/Map.TapHold.js

@@ -0,0 +1,102 @@
+import {Map} from '../Map';
+import {Handler} from '../../core/Handler';
+import * as DomEvent from '../../dom/DomEvent';
+import {Point} from '../../geometry/Point';
+import * as Util from '../../core/Util';
+import Browser from '../../core/Browser';
+
+/*
+ * L.Map.TapHold is used to simulate `contextmenu` event on long hold,
+ * which otherwise is not fired by mobile Safari.
+ */
+
+var tapHoldDelay = 600;
+
+// @namespace Map
+// @section Interaction Options
+Map.mergeOptions({
+	// @section Touch interaction options
+	// @option tapHold: Boolean
+	// Enables simulation of `contextmenu` event, default is `true` for mobile Safari.
+	tapHold: Browser.touchNative && Browser.safari && Browser.mobile,
+
+	// @option tapTolerance: Number = 15
+	// The max number of pixels a user can shift his finger during touch
+	// for it to be considered a valid tap.
+	tapTolerance: 15
+});
+
+export var TapHold = Handler.extend({
+	addHooks: function () {
+		DomEvent.on(this._map._container, 'touchstart', this._onDown, this);
+	},
+
+	removeHooks: function () {
+		DomEvent.off(this._map._container, 'touchstart', this._onDown, this);
+	},
+
+	_onDown: function (e) {
+		clearTimeout(this._holdTimeout);
+		if (e.touches.length !== 1) { return; }
+
+		var first = e.touches[0];
+		this._startPos = this._newPos = new Point(first.clientX, first.clientY);
+
+		this._holdTimeout = setTimeout(Util.bind(function () {
+			this._cancel();
+			if (!this._isTapValid()) { return; }
+
+			// prevent simulated mouse events https://w3c.github.io/touch-events/#mouse-events
+			DomEvent.on(document, 'touchend', DomEvent.preventDefault);
+			DomEvent.on(document, 'touchend touchcancel', this._cancelClickPrevent);
+			this._simulateEvent('contextmenu', first);
+		}, this), tapHoldDelay);
+
+		DomEvent.on(document, 'touchend touchcancel contextmenu', this._cancel, this);
+		DomEvent.on(document, 'touchmove', this._onMove, this);
+	},
+
+	_cancelClickPrevent: function cancelClickPrevent() {
+		DomEvent.off(document, 'touchend', DomEvent.preventDefault);
+		DomEvent.off(document, 'touchend touchcancel', cancelClickPrevent);
+	},
+
+	_cancel: function () {
+		clearTimeout(this._holdTimeout);
+		DomEvent.off(document, 'touchend touchcancel contextmenu', this._cancel, this);
+		DomEvent.off(document, 'touchmove', this._onMove, this);
+	},
+
+	_onMove: function (e) {
+		var first = e.touches[0];
+		this._newPos = new Point(first.clientX, first.clientY);
+	},
+
+	_isTapValid: function () {
+		return this._newPos.distanceTo(this._startPos) <= this._map.options.tapTolerance;
+	},
+
+	_simulateEvent: function (type, e) {
+		var simulatedEvent = new MouseEvent(type, {
+			bubbles: true,
+			cancelable: true,
+			view: window,
+			// detail: 1,
+			screenX: e.screenX,
+			screenY: e.screenY,
+			clientX: e.clientX,
+			clientY: e.clientY,
+			// button: 2,
+			// buttons: 2
+		});
+
+		simulatedEvent._simulated = true;
+
+		e.target.dispatchEvent(simulatedEvent);
+	}
+});
+
+// @section Handlers
+// @property tapHold: Handler
+// Long tap handler to simulate `contextmenu` event (useful in mobile Safari).
+Map.addInitHook('addHandler', 'tapHold', TapHold);

frontend/node_modules/leaflet/src/map/handler/Map.TouchZoom.js

@@ -0,0 +1,130 @@
+import {Map} from '../Map';
+import {Handler} from '../../core/Handler';
+import * as DomEvent from '../../dom/DomEvent';
+import * as Util from '../../core/Util';
+import * as DomUtil from '../../dom/DomUtil';
+import Browser from '../../core/Browser';
+
+/*
+ * L.Handler.TouchZoom is used by L.Map to add pinch zoom on supported mobile browsers.
+ */
+
+// @namespace Map
+// @section Interaction Options
+Map.mergeOptions({
+	// @section Touch interaction options
+	// @option touchZoom: Boolean|String = *
+	// Whether the map can be zoomed by touch-dragging with two fingers. If
+	// passed `'center'`, it will zoom to the center of the view regardless of
+	// where the touch events (fingers) were. Enabled for touch-capable web
+	// browsers.
+	touchZoom: Browser.touch,
+
+	// @option bounceAtZoomLimits: Boolean = true
+	// Set it to false if you don't want the map to zoom beyond min/max zoom
+	// and then bounce back when pinch-zooming.
+	bounceAtZoomLimits: true
+});
+
+export var TouchZoom = Handler.extend({
+	addHooks: function () {
+		DomUtil.addClass(this._map._container, 'leaflet-touch-zoom');
+		DomEvent.on(this._map._container, 'touchstart', this._onTouchStart, this);
+	},
+
+	removeHooks: function () {
+		DomUtil.removeClass(this._map._container, 'leaflet-touch-zoom');
+		DomEvent.off(this._map._container, 'touchstart', this._onTouchStart, this);
+	},
+
+	_onTouchStart: function (e) {
+		var map = this._map;
+		if (!e.touches || e.touches.length !== 2 || map._animatingZoom || this._zooming) { return; }
+
+		var p1 = map.mouseEventToContainerPoint(e.touches[0]),
+		    p2 = map.mouseEventToContainerPoint(e.touches[1]);
+
+		this._centerPoint = map.getSize()._divideBy(2);
+		this._startLatLng = map.containerPointToLatLng(this._centerPoint);
+		if (map.options.touchZoom !== 'center') {
+			this._pinchStartLatLng = map.containerPointToLatLng(p1.add(p2)._divideBy(2));
+		}
+
+		this._startDist = p1.distanceTo(p2);
+		this._startZoom = map.getZoom();
+
+		this._moved = false;
+		this._zooming = true;
+
+		map._stop();
+
+		DomEvent.on(document, 'touchmove', this._onTouchMove, this);
+		DomEvent.on(document, 'touchend touchcancel', this._onTouchEnd, this);
+
+		DomEvent.preventDefault(e);
+	},
+
+	_onTouchMove: function (e) {
+		if (!e.touches || e.touches.length !== 2 || !this._zooming) { return; }
+
+		var map = this._map,
+		    p1 = map.mouseEventToContainerPoint(e.touches[0]),
+		    p2 = map.mouseEventToContainerPoint(e.touches[1]),
+		    scale = p1.distanceTo(p2) / this._startDist;
+
+		this._zoom = map.getScaleZoom(scale, this._startZoom);
+
+		if (!map.options.bounceAtZoomLimits && (
+			(this._zoom < map.getMinZoom() && scale < 1) ||
+			(this._zoom > map.getMaxZoom() && scale > 1))) {
+			this._zoom = map._limitZoom(this._zoom);
+		}
+
+		if (map.options.touchZoom === 'center') {
+			this._center = this._startLatLng;
+			if (scale === 1) { return; }
+		} else {
+			// Get delta from pinch to center, so centerLatLng is delta applied to initial pinchLatLng
+			var delta = p1._add(p2)._divideBy(2)._subtract(this._centerPoint);
+			if (scale === 1 && delta.x === 0 && delta.y === 0) { return; }
+			this._center = map.unproject(map.project(this._pinchStartLatLng, this._zoom).subtract(delta), this._zoom);
+		}
+
+		if (!this._moved) {
+			map._moveStart(true, false);
+			this._moved = true;
+		}
+
+		Util.cancelAnimFrame(this._animRequest);
+
+		var moveFn = Util.bind(map._move, map, this._center, this._zoom, {pinch: true, round: false}, undefined);
+		this._animRequest = Util.requestAnimFrame(moveFn, this, true);
+
+		DomEvent.preventDefault(e);
+	},
+
+	_onTouchEnd: function () {
+		if (!this._moved || !this._zooming) {
+			this._zooming = false;
+			return;
+		}
+
+		this._zooming = false;
+		Util.cancelAnimFrame(this._animRequest);
+
+		DomEvent.off(document, 'touchmove', this._onTouchMove, this);
+		DomEvent.off(document, 'touchend touchcancel', this._onTouchEnd, this);
+
+		// Pinch updates GridLayers' levels only when zoomSnap is off, so zoomSnap becomes noUpdate.
+		if (this._map.options.zoomAnimation) {
+			this._map._animateZoom(this._center, this._map._limitZoom(this._zoom), true, this._map.options.zoomSnap);
+		} else {
+			this._map._resetView(this._center, this._map._limitZoom(this._zoom));
+		}
+	}
+});
+
+// @section Handlers
+// @property touchZoom: Handler
+// Touch zoom handler.
+Map.addInitHook('addHandler', 'touchZoom', TouchZoom);

frontend/node_modules/leaflet/src/map/index.js

@@ -0,0 +1,17 @@
+import {Map} from './Map';
+import {BoxZoom} from './handler/Map.BoxZoom';
+Map.BoxZoom = BoxZoom;
+import {DoubleClickZoom} from './handler/Map.DoubleClickZoom';
+Map.DoubleClickZoom = DoubleClickZoom;
+import {Drag} from './handler/Map.Drag';
+Map.Drag = Drag;
+import {Keyboard} from './handler/Map.Keyboard';
+Map.Keyboard = Keyboard;
+import {ScrollWheelZoom} from './handler/Map.ScrollWheelZoom';
+Map.ScrollWheelZoom = ScrollWheelZoom;
+import {TapHold} from './handler/Map.TapHold';
+Map.TapHold = TapHold;
+import {TouchZoom} from './handler/Map.TouchZoom';
+Map.TouchZoom = TouchZoom;
+
+export {Map, createMap as map} from './Map';