text: import * as Util from '../core/Util';
  import {Evented} from '../core/Events';
  import {EPSG3857} from '../geo/crs/CRS.EPSG3857';
  import {Point, toPoint} from '../geometry/Point';
  import {Bounds, toBounds} from '../geometry/Bounds';
  import {LatLng, toLatLng} from '../geo/LatLng';
  import {LatLngBounds, toLatLngBounds} from '../geo/LatLngBounds';
  import * as Browser from '../core/Browser';
  import * as DomEvent from '../dom/DomEvent';
  import * as DomUtil from '../dom/DomUtil';
  import {PosAnimation} from '../dom/PosAnimation';
  
  /*
   * @class Map
   * @aka L.Map
   * @inherits Evented
   *
   * The central class of the API — it is used to create a map on a page and manipulate it.
   *
   * @example
   *
   * ```js
   * // initialize the map on the "map" div with a given center and zoom
   * var map = L.map('map', {
   * 	center: [51.505, -0.09],
   * 	zoom: 13
   * });
   * ```
   *
   */
  
  export var Map = Evented.extend({
  
  	options: {
  		// @section Map State Options
  		// @option crs: CRS = L.CRS.EPSG3857
  		// The [Coordinate Reference System](#crs) to use. Don't change this if you're not
  		// sure what it means.
  		crs: EPSG3857,
  
  		// @option center: LatLng = undefined
  		// Initial geographic center of the map
  		center: undefined,
  
  		// @option zoom: Number = undefined
  		// Initial map zoom level
  		zoom: undefined,
  
  		// @option minZoom: Number = *
  		// Minimum zoom level of the map.
  		// If not specified and at least one `GridLayer` or `TileLayer` is in the map,
  		// the lowest of their `minZoom` options will be used instead.
  		minZoom: undefined,
  
  		// @option maxZoom: Number = *
  		// Maximum zoom level of the map.
  		// If not specified and at least one `GridLayer` or `TileLayer` is in the map,
  		// the highest of their `maxZoom` options will be used instead.
  		maxZoom: undefined,
  
  		// @option layers: Layer[] = []
  		// Array of layers that will be added to the map initially
  		layers: [],
  
  		// @option maxBounds: LatLngBounds = null
  		// When this option is set, the map restricts the view to the given
  		// geographical bounds, bouncing the user back if the user tries to pan
  		// outside the view. To set the restriction dynamically, use
  		// [`setMaxBounds`](#map-setmaxbounds) method.
  		maxBounds: undefined,
  
  		// @option renderer: Renderer = *
  		// The default method for drawing vector layers on the map. `L.SVG`
  		// or `L.Canvas` by default depending on browser support.
  		renderer: undefined,
  
  
  		// @section Animation Options
  		// @option zoomAnimation: Boolean = true
  		// Whether the map zoom animation is enabled. By default it's enabled
  		// in all browsers that support CSS3 Transitions except Android.
  		zoomAnimation: true,
  
  		// @option zoomAnimationThreshold: Number = 4
  		// Won't animate zoom if the zoom difference exceeds this value.
  		zoomAnimationThreshold: 4,
  
  		// @option fadeAnimation: Boolean = true
  		// Whether the tile fade animation is enabled. By default it's enabled
  		// in all browsers that support CSS3 Transitions except Android.
  		fadeAnimation: true,
  
  		// @option markerZoomAnimation: Boolean = true
  		// Whether markers animate their zoom with the zoom animation, if disabled
  		// they will disappear for the length of the animation. By default it's
  		// enabled in all browsers that support CSS3 Transitions except Android.
  		markerZoomAnimation: true,
  
  		// @option transform3DLimit: Number = 2^23
  		// Defines the maximum size of a CSS translation transform. The default
  		// value should not be changed unless a web browser positions layers in
  		// the wrong place after doing a large `panBy`.
  		transform3DLimit: 8388608, // Precision limit of a 32-bit float
  
  		// @section Interaction Options
  		// @option zoomSnap: Number = 1
  		// Forces the map's zoom level to always be a multiple of this, particularly
  		// right after a [`fitBounds()`](#map-fitbounds) or a pinch-zoom.
  		// By default, the zoom level snaps to the nearest integer; lower values
  		// (e.g. `0.5` or `0.1`) allow for greater granularity. A value of `0`
  		// means the zoom level will not be snapped after `fitBounds` or a pinch-zoom.
  		zoomSnap: 1,
  
  		// @option zoomDelta: Number = 1
  		// Controls how much the map's zoom level will change after a
  		// [`zoomIn()`](#map-zoomin), [`zoomOut()`](#map-zoomout), pressing `+`
  		// or `-` on the keyboard, or using the [zoom controls](#control-zoom).
  		// Values smaller than `1` (e.g. `0.5`) allow for greater granularity.
  		zoomDelta: 1,
  
  		// @option trackResize: Boolean = true
  		// Whether the map automatically handles browser window resize to update itself.
  		trackResize: true
  	},
  
  	initialize: function (id, options) { // (HTMLElement or String, Object)
  		options = Util.setOptions(this, options);
  
  		// Make sure to assign internal flags at the beginning,
  		// to avoid inconsistent state in some edge cases.
  		this._handlers = [];
  		this._layers = {};
  		this._zoomBoundLayers = {};
  		this._sizeChanged = true;
  
  		this._initContainer(id);
  		this._initLayout();
  
  		// hack for https://github.com/Leaflet/Leaflet/issues/1980
  		this._onResize = Util.bind(this._onResize, this);
  
  		this._initEvents();
  
  		if (options.maxBounds) {
  			this.setMaxBounds(options.maxBounds);
  		}
  
  		if (options.zoom !== undefined) {
  			this._zoom = this._limitZoom(options.zoom);
  		}
  
  		if (options.center && options.zoom !== undefined) {
  			this.setView(toLatLng(options.center), options.zoom, {reset: true});
  		}
  
  		this.callInitHooks();
  
  		// don't animate on browsers without hardware-accelerated transitions or old Android/Opera
  		this._zoomAnimated = DomUtil.TRANSITION && Browser.any3d && !Browser.mobileOpera &&
  				this.options.zoomAnimation;
  
  		// zoom transitions run with the same duration for all layers, so if one of transitionend events
  		// happens after starting zoom animation (propagating to the map pane), we know that it ended globally
  		if (this._zoomAnimated) {
  			this._createAnimProxy();
  			DomEvent.on(this._proxy, DomUtil.TRANSITION_END, this._catchTransitionEnd, this);
  		}
  
  		this._addLayers(this.options.layers);
  	},
  
  
  	// @section Methods for modifying map state
  
  	// @method setView(center: LatLng, zoom: Number, options?: Zoom/pan options): this
  	// Sets the view of the map (geographical center and zoom) with the given
  	// animation options.
  	setView: function (center, zoom, options) {
  
  		zoom = zoom === undefined ? this._zoom : this._limitZoom(zoom);
  		center = this._limitCenter(toLatLng(center), zoom, this.options.maxBounds);
  		options = options || {};
  
  		this._stop();
  
  		if (this._loaded && !options.reset && options !== true) {
  
  			if (options.animate !== undefined) {
  				options.zoom = Util.extend({animate: options.animate}, options.zoom);
  				options.pan = Util.extend({animate: options.animate, duration: options.duration}, options.pan);
  			}
  
  			// try animating pan or zoom
  			var moved = (this._zoom !== zoom) ?
  				this._tryAnimatedZoom && this._tryAnimatedZoom(center, zoom, options.zoom) :
  				this._tryAnimatedPan(center, options.pan);
  
  			if (moved) {
  				// prevent resize handler call, the view will refresh after animation anyway
  				clearTimeout(this._sizeTimer);
  				return this;
  			}
  		}
  
  		// animation didn't start, just reset the map view
  		this._resetView(center, zoom);
  
  		return this;
  	},
  
  	// @method setZoom(zoom: Number, options?: Zoom/pan options): this
  	// Sets the zoom of the map.
  	setZoom: function (zoom, options) {
  		if (!this._loaded) {
  			this._zoom = zoom;
  			return this;
  		}
  		return this.setView(this.getCenter(), zoom, {zoom: options});
  	},
  
  	// @method zoomIn(delta?: Number, options?: Zoom options): this
  	// Increases the zoom of the map by `delta` ([`zoomDelta`](#map-zoomdelta) by default).
  	zoomIn: function (delta, options) {
  		delta = delta || (Browser.any3d ? this.options.zoomDelta : 1);
  		return this.setZoom(this._zoom + delta, options);
  	},
  
  	// @method zoomOut(delta?: Number, options?: Zoom options): this
  	// Decreases the zoom of the map by `delta` ([`zoomDelta`](#map-zoomdelta) by default).
  	zoomOut: function (delta, options) {
  		delta = delta || (Browser.any3d ? this.options.zoomDelta : 1);
  		return this.setZoom(this._zoom - delta, options);
  	},
  
  	// @method setZoomAround(latlng: LatLng, zoom: Number, options: Zoom options): this
  	// Zooms the map while keeping a specified geographical point on the map
  	// stationary (e.g. used internally for scroll zoom and double-click zoom).
  	// @alternative
  	// @method setZoomAround(offset: Point, zoom: Number, options: Zoom options): this
  	// Zooms the map while keeping a specified pixel on the map (relative to the top-left corner) stationary.
  	setZoomAround: function (latlng, zoom, options) {
  		var scale = this.getZoomScale(zoom),
  		    viewHalf = this.getSize().divideBy(2),
  		    containerPoint = latlng instanceof Point ? latlng : this.latLngToContainerPoint(latlng),
  
  		    centerOffset = containerPoint.subtract(viewHalf).multiplyBy(1 - 1 / scale),
  		    newCenter = this.containerPointToLatLng(viewHalf.add(centerOffset));
  
  		return this.setView(newCenter, zoom, {zoom: options});
  	},
  
  	_getBoundsCenterZoom: function (bounds, options) {
  
  		options = options || {};
  		bounds = bounds.getBounds ? bounds.getBounds() : toLatLngBounds(bounds);
  
  		var paddingTL = toPoint(options.paddingTopLeft || options.padding || [0, 0]),
  		    paddingBR = toPoint(options.paddingBottomRight || options.padding || [0, 0]),
  
  		    zoom = this.getBoundsZoom(bounds, false, paddingTL.add(paddingBR));
  
  		zoom = (typeof options.maxZoom === 'number') ? Math.min(options.maxZoom, zoom) : zoom;
  
  		if (zoom === Infinity) {
  			return {
  				center: bounds.getCenter(),
  				zoom: zoom
  			};
  		}
  
  		var paddingOffset = paddingBR.subtract(paddingTL).divideBy(2),
  
  		    swPoint = this.project(bounds.getSouthWest(), zoom),
  		    nePoint = this.project(bounds.getNorthEast(), zoom),
  		    center = this.unproject(swPoint.add(nePoint).divideBy(2).add(paddingOffset), zoom);
  
  		return {
  			center: center,
  			zoom: zoom
  		};
  	},
  
  	// @method fitBounds(bounds: LatLngBounds, options?: fitBounds options): this
  	// Sets a map view that contains the given geographical bounds with the
  	// maximum zoom level possible.
  	fitBounds: function (bounds, options) {
  
  		bounds = toLatLngBounds(bounds);
  
  		if (!bounds.isValid()) {
  			throw new Error('Bounds are not valid.');
  		}
  
  		var target = this._getBoundsCenterZoom(bounds, options);
  		return this.setView(target.center, target.zoom, options);
  	},
  
  	// @method fitWorld(options?: fitBounds options): this
  	// Sets a map view that mostly contains the whole world with the maximum
  	// zoom level possible.
  	fitWorld: function (options) {
  		return this.fitBounds([[-90, -180], [90, 180]], options);
  	},
  
  	// @method panTo(latlng: LatLng, options?: Pan options): this
  	// Pans the map to a given center.
  	panTo: function (center, options) { // (LatLng)
  		return this.setView(center, this._zoom, {pan: options});
  	},
  
  	// @method panBy(offset: Point, options?: Pan options): this
  	// Pans the map by a given number of pixels (animated).
  	panBy: function (offset, options) {
  		offset = toPoint(offset).round();
  		options = options || {};
  
  		if (!offset.x && !offset.y) {
  			return this.fire('moveend');
  		}
  		// If we pan too far, Chrome gets issues with tiles
  		// and makes them disappear or appear in the wrong place (slightly offset) #2602
  		if (options.animate !== true && !this.getSize().contains(offset)) {
  			this._resetView(this.unproject(this.project(this.getCenter()).add(offset)), this.getZoom());
  			return this;
  		}
  
  		if (!this._panAnim) {
  			this._panAnim = new PosAnimation();
  
  			this._panAnim.on({
  				'step': this._onPanTransitionStep,
  				'end': this._onPanTransitionEnd
  			}, this);
  		}
  
  		// don't fire movestart if animating inertia
  		if (!options.noMoveStart) {
  			this.fire('movestart');
  		}
  
  		// animate pan unless animate: false specified
  		if (options.animate !== false) {
  			DomUtil.addClass(this._mapPane, 'leaflet-pan-anim');
  
  			var newPos = this._getMapPanePos().subtract(offset).round();
  			this._panAnim.run(this._mapPane, newPos, options.duration || 0.25, options.easeLinearity);
  		} else {
  			this._rawPanBy(offset);
  			this.fire('move').fire('moveend');
  		}
  
  		return this;
  	},
  
  	// @method flyTo(latlng: LatLng, zoom?: Number, options?: Zoom/pan options): this
  	// Sets the view of the map (geographical center and zoom) performing a smooth
  	// pan-zoom animation.
  	flyTo: function (targetCenter, targetZoom, options) {
  
  		options = options || {};
  		if (options.animate === false || !Browser.any3d) {
  			return this.setView(targetCenter, targetZoom, options);
  		}
  
  		this._stop();
  
  		var from = this.project(this.getCenter()),
  		    to = this.project(targetCenter),
  		    size = this.getSize(),
  		    startZoom = this._zoom;
  
  		targetCenter = toLatLng(targetCenter);
  		targetZoom = targetZoom === undefined ? startZoom : targetZoom;
  
  		var w0 = Math.max(size.x, size.y),
  		    w1 = w0 * this.getZoomScale(startZoom, targetZoom),
  		    u1 = (to.distanceTo(from)) || 1,
  		    rho = 1.42,
  		    rho2 = rho * rho;
  
  		function r(i) {
  			var s1 = i ? -1 : 1,
  			    s2 = i ? w1 : w0,
  			    t1 = w1 * w1 - w0 * w0 + s1 * rho2 * rho2 * u1 * u1,
  			    b1 = 2 * s2 * rho2 * u1,
  			    b = t1 / b1,
  			    sq = Math.sqrt(b * b + 1) - b;
  
  			    // workaround for floating point precision bug when sq = 0, log = -Infinite,
  			    // thus triggering an infinite loop in flyTo
  			    var log = sq < 0.000000001 ? -18 : Math.log(sq);
  
  			return log;
  		}
  
  		function sinh(n) { return (Math.exp(n) - Math.exp(-n)) / 2; }
  		function cosh(n) { return (Math.exp(n) + Math.exp(-n)) / 2; }
  		function tanh(n) { return sinh(n) / cosh(n); }
  
  		var r0 = r(0);
  
  		function w(s) { return w0 * (cosh(r0) / cosh(r0 + rho * s)); }
  		function u(s) { return w0 * (cosh(r0) * tanh(r0 + rho * s) - sinh(r0)) / rho2; }
  
  		function easeOut(t) { return 1 - Math.pow(1 - t, 1.5); }
  
  		var start = Date.now(),
  		    S = (r(1) - r0) / rho,
  		    duration = options.duration ? 1000 * options.duration : 1000 * S * 0.8;
  
  		function frame() {
  			var t = (Date.now() - start) / duration,
  			    s = easeOut(t) * S;
  
  			if (t <= 1) {
  				this._flyToFrame = Util.requestAnimFrame(frame, this);
  
  				this._move(
  					this.unproject(from.add(to.subtract(from).multiplyBy(u(s) / u1)), startZoom),
  					this.getScaleZoom(w0 / w(s), startZoom),
  					{flyTo: true});
  
  			} else {
  				this
  					._move(targetCenter, targetZoom)
  					._moveEnd(true);
  			}
  		}
  
  		this._moveStart(true, options.noMoveStart);
  
  		frame.call(this);
  		return this;
  	},
  
  	// @method flyToBounds(bounds: LatLngBounds, options?: fitBounds options): this
  	// Sets the view of the map with a smooth animation like [`flyTo`](#map-flyto),
  	// but takes a bounds parameter like [`fitBounds`](#map-fitbounds).
  	flyToBounds: function (bounds, options) {
  		var target = this._getBoundsCenterZoom(bounds, options);
  		return this.flyTo(target.center, target.zoom, options);
  	},
  
  	// @method setMaxBounds(bounds: Bounds): this
  	// Restricts the map view to the given bounds (see the [maxBounds](#map-maxbounds) option).
  	setMaxBounds: function (bounds) {
  		bounds = toLatLngBounds(bounds);
  
  		if (!bounds.isValid()) {
  			this.options.maxBounds = null;
  			return this.off('moveend', this._panInsideMaxBounds);
  		} else if (this.options.maxBounds) {
  			this.off('moveend', this._panInsideMaxBounds);
  		}
  
  		this.options.maxBounds = bounds;
  
  		if (this._loaded) {
  			this._panInsideMaxBounds();
  		}
  
  		return this.on('moveend', this._panInsideMaxBounds);
  	},
  
  	// @method setMinZoom(zoom: Number): this
  	// Sets the lower limit for the available zoom levels (see the [minZoom](#map-minzoom) option).
  	setMinZoom: function (zoom) {
  		var oldZoom = this.options.minZoom;
  		this.options.minZoom = zoom;
  
  		if (this._loaded && oldZoom !== zoom) {
  			this.fire('zoomlevelschange');
  
  			if (this.getZoom() < this.options.minZoom) {
  				return this.setZoom(zoom);
  			}
  		}
  
  		return this;
  	},
  
  	// @method setMaxZoom(zoom: Number): this
  	// Sets the upper limit for the available zoom levels (see the [maxZoom](#map-maxzoom) option).
  	setMaxZoom: function (zoom) {
  		var oldZoom = this.options.maxZoom;
  		this.options.maxZoom = zoom;
  
  		if (this._loaded && oldZoom !== zoom) {
  			this.fire('zoomlevelschange');
  
  			if (this.getZoom() > this.options.maxZoom) {
  				return this.setZoom(zoom);
  			}
  		}
  
  		return this;
  	},
  
  	// @method panInsideBounds(bounds: LatLngBounds, options?: Pan options): this
  	// Pans the map to the closest view that would lie inside the given bounds (if it's not already), controlling the animation using the options specific, if any.
  	panInsideBounds: function (bounds, options) {
  		this._enforcingBounds = true;
  		var center = this.getCenter(),
  		    newCenter = this._limitCenter(center, this._zoom, toLatLngBounds(bounds));
  
  		if (!center.equals(newCenter)) {
  			this.panTo(newCenter, options);
  		}
  
  		this._enforcingBounds = false;
  		return this;
  	},
  
  	// @method panInside(latlng: LatLng, options?: options): this
  	// Pans the map the minimum amount to make the `latlng` visible. Use
  	// `padding`, `paddingTopLeft` and `paddingTopRight` options to fit
  	// the display to more restricted bounds, like [`fitBounds`](#map-fitbounds).
  	// If `latlng` is already within the (optionally padded) display bounds,
  	// the map will not be panned.
  	panInside: function (latlng, options) {
  		options = options || {};
  
  		var paddingTL = toPoint(options.paddingTopLeft || options.padding || [0, 0]),
  		    paddingBR = toPoint(options.paddingBottomRight || options.padding || [0, 0]),
  		    center = this.getCenter(),
  		    pixelCenter = this.project(center),
  		    pixelPoint = this.project(latlng),
  		    pixelBounds = this.getPixelBounds(),
  		    halfPixelBounds = pixelBounds.getSize().divideBy(2),
  		    paddedBounds = toBounds([pixelBounds.min.add(paddingTL), pixelBounds.max.subtract(paddingBR)]);
  
  		if (!paddedBounds.contains(pixelPoint)) {
  			this._enforcingBounds = true;
  			var diff = pixelCenter.subtract(pixelPoint),
  			    newCenter = toPoint(pixelPoint.x + diff.x, pixelPoint.y + diff.y);
  
  			if (pixelPoint.x < paddedBounds.min.x || pixelPoint.x > paddedBounds.max.x) {
  				newCenter.x = pixelCenter.x - diff.x;
  				if (diff.x > 0) {
  					newCenter.x += halfPixelBounds.x - paddingTL.x;
  				} else {
  					newCenter.x -= halfPixelBounds.x - paddingBR.x;
  				}
  			}
  			if (pixelPoint.y < paddedBounds.min.y || pixelPoint.y > paddedBounds.max.y) {
  				newCenter.y = pixelCenter.y - diff.y;
  				if (diff.y > 0) {
  					newCenter.y += halfPixelBounds.y - paddingTL.y;
  				} else {
  					newCenter.y -= halfPixelBounds.y - paddingBR.y;
  				}
  			}
  			this.panTo(this.unproject(newCenter), options);
  			this._enforcingBounds = false;
  		}
  		return this;
  	},
  
  	// @method invalidateSize(options: Zoom/pan options): this
  	// Checks if the map container size changed and updates the map if so —
  	// call it after you've changed the map size dynamically, also animating
  	// pan by default. If `options.pan` is `false`, panning will not occur.
  	// If `options.debounceMoveend` is `true`, it will delay `moveend` event so
  	// that it doesn't happen often even if the method is called many
  	// times in a row.
  
  	// @alternative
  	// @method invalidateSize(animate: Boolean): this
  	// Checks if the map container size changed and updates the map if so —
  	// call it after you've changed the map size dynamically, also animating
  	// pan by default.
  	invalidateSize: function (options) {
  		if (!this._loaded) { return this; }
  
  		options = Util.extend({
  			animate: false,
  			pan: true
  		}, options === true ? {animate: true} : options);
  
  		var oldSize = this.getSize();
  		this._sizeChanged = true;
  		this._lastCenter = null;
  
  		var newSize = this.getSize(),
  		    oldCenter = oldSize.divideBy(2).round(),
  		    newCenter = newSize.divideBy(2).round(),
  		    offset = oldCenter.subtract(newCenter);
  
  		if (!offset.x && !offset.y) { return this; }
  
  		if (options.animate && options.pan) {
  			this.panBy(offset);
  
  		} else {
  			if (options.pan) {
  				this._rawPanBy(offset);
  			}
  
  			this.fire('move');
  
  			if (options.debounceMoveend) {
  				clearTimeout(this._sizeTimer);
  				this._sizeTimer = setTimeout(Util.bind(this.fire, this, 'moveend'), 200);
  			} else {
  				this.fire('moveend');
  			}
  		}
  
  		// @section Map state change events
  		// @event resize: ResizeEvent
  		// Fired when the map is resized.
  		return this.fire('resize', {
  			oldSize: oldSize,
  			newSize: newSize
  		});
  	},
  
  	// @section Methods for modifying map state
  	// @method stop(): this
  	// Stops the currently running `panTo` or `flyTo` animation, if any.
  	stop: function () {
  		this.setZoom(this._limitZoom(this._zoom));
  		if (!this.options.zoomSnap) {
  			this.fire('viewreset');
  		}
  		return this._stop();
  	},
  
  	// @section Geolocation methods
  	// @method locate(options?: Locate options): this
  	// Tries to locate the user using the Geolocation API, firing a [`locationfound`](#map-locationfound)
  	// event with location data on success or a [`locationerror`](#map-locationerror) event on failure,
  	// and optionally sets the map view to the user's location with respect to
  	// detection accuracy (or to the world view if geolocation failed).
  	// Note that, if your page doesn't use HTTPS, this method will fail in
  	// modern browsers ([Chrome 50 and newer](https://sites.google.com/a/chromium.org/dev/Home/chromium-security/deprecating-powerful-features-on-insecure-origins))
  	// See `Locate options` for more details.
  	locate: function (options) {
  
  		options = this._locateOptions = Util.extend({
  			timeout: 10000,
  			watch: false
  			// setView: false
  			// maxZoom: <Number>
  			// maximumAge: 0
  			// enableHighAccuracy: false
  		}, options);
  
  		if (!('geolocation' in navigator)) {
  			this._handleGeolocationError({
  				code: 0,
  				message: 'Geolocation not supported.'
  			});
  			return this;
  		}
  
  		var onResponse = Util.bind(this._handleGeolocationResponse, this),
  		    onError = Util.bind(this._handleGeolocationError, this);
  
  		if (options.watch) {
  			this._locationWatchId =
  			        navigator.geolocation.watchPosition(onResponse, onError, options);
  		} else {
  			navigator.geolocation.getCurrentPosition(onResponse, onError, options);
  		}
  		return this;
  	},
  
  	// @method stopLocate(): this
  	// Stops watching location previously initiated by `map.locate({watch: true})`
  	// and aborts resetting the map view if map.locate was called with
  	// `{setView: true}`.
  	stopLocate: function () {
  		if (navigator.geolocation && navigator.geolocation.clearWatch) {
  			navigator.geolocation.clearWatch(this._locationWatchId);
  		}
  		if (this._locateOptions) {
  			this._locateOptions.setView = false;
  		}
  		return this;
  	},
  
  	_handleGeolocationError: function (error) {
  		var c = error.code,
  		    message = error.message ||
  		            (c === 1 ? 'permission denied' :
  		            (c === 2 ? 'position unavailable' : 'timeout'));
  
  		if (this._locateOptions.setView && !this._loaded) {
  			this.fitWorld();
  		}
  
  		// @section Location events
  		// @event locationerror: ErrorEvent
  		// Fired when geolocation (using the [`locate`](#map-locate) method) failed.
  		this.fire('locationerror', {
  			code: c,
  			message: 'Geolocation error: ' + message + '.'
  		});
  	},
  
  	_handleGeolocationResponse: function (pos) {
  		var lat = pos.coords.latitude,
  		    lng = pos.coords.longitude,
  		    latlng = new LatLng(lat, lng),
  		    bounds = latlng.toBounds(pos.coords.accuracy * 2),
  		    options = this._locateOptions;
  
  		if (options.setView) {
  			var zoom = this.getBoundsZoom(bounds);
  			this.setView(latlng, options.maxZoom ? Math.min(zoom, options.maxZoom) : zoom);
  		}
  
  		var data = {
  			latlng: latlng,
  			bounds: bounds,
  			timestamp: pos.timestamp
  		};
  
  		for (var i in pos.coords) {
  			if (typeof pos.coords[i] === 'number') {
  				data[i] = pos.coords[i];
  			}
  		}
  
  		// @event locationfound: LocationEvent
  		// Fired when geolocation (using the [`locate`](#map-locate) method)
  		// went successfully.
  		this.fire('locationfound', data);
  	},
  
  	// TODO Appropriate docs section?
  	// @section Other Methods
  	// @method addHandler(name: String, HandlerClass: Function): this
  	// Adds a new `Handler` to the map, given its name and constructor function.
  	addHandler: function (name, HandlerClass) {
  		if (!HandlerClass) { return this; }
  
  		var handler = this[name] = new HandlerClass(this);
  
  		this._handlers.push(handler);
  
  		if (this.options[name]) {
  			handler.enable();
  		}
  
  		return this;
  	},
  
  	// @method remove(): this
  	// Destroys the map and clears all related event listeners.
  	remove: function () {
  
  		this._initEvents(true);
  
  		if (this._containerId !== this._container._leaflet_id) {
  			throw new Error('Map container is being reused by another instance');
  		}
  
  		try {
  			// throws error in IE6-8
  			delete this._container._leaflet_id;
  			delete this._containerId;
  		} catch (e) {
  			/*eslint-disable */
  			this._container._leaflet_id = undefined;
  			/* eslint-enable */
  			this._containerId = undefined;
  		}
  
  		if (this._locationWatchId !== undefined) {
  			this.stopLocate();
  		}
  
  		this._stop();
  
  		DomUtil.remove(this._mapPane);
  
  		if (this._clearControlPos) {
  			this._clearControlPos();
  		}
  		if (this._resizeRequest) {
  			Util.cancelAnimFrame(this._resizeRequest);
  			this._resizeRequest = null;
  		}
  
  		this._clearHandlers();
  
  		if (this._loaded) {
  			// @section Map state change events
  			// @event unload: Event
  			// Fired when the map is destroyed with [remove](#map-remove) method.
  			this.fire('unload');
  		}
  
  		var i;
  		for (i in this._layers) {
  			this._layers[i].remove();
  		}
  		for (i in this._panes) {
  			DomUtil.remove(this._panes[i]);
  		}
  
  		this._layers = [];
  		this._panes = [];
  		delete this._mapPane;
  		delete this._renderer;
  
  		return this;
  	},
  
  	// @section Other Methods
  	// @method createPane(name: String, container?: HTMLElement): HTMLElement
  	// Creates a new [map pane](#map-pane) with the given name if it doesn't exist already,
  	// then returns it. The pane is created as a child of `container`, or
  	// as a child of the main map pane if not set.
  	createPane: function (name, container) {
  		var className = 'leaflet-pane' + (name ? ' leaflet-' + name.replace('Pane', '') + '-pane' : ''),
  		    pane = DomUtil.create('div', className, container || this._mapPane);
  
  		if (name) {
  			this._panes[name] = pane;
  		}
  		return pane;
  	},
  
  	// @section Methods for Getting Map State
  
  	// @method getCenter(): LatLng
  	// Returns the geographical center of the map view
  	getCenter: function () {
  		this._checkIfLoaded();
  
  		if (this._lastCenter && !this._moved()) {
  			return this._lastCenter;
  		}
  		return this.layerPointToLatLng(this._getCenterLayerPoint());
  	},
  
  	// @method getZoom(): Number
  	// Returns the current zoom level of the map view
  	getZoom: function () {
  		return this._zoom;
  	},
  
  	// @method getBounds(): LatLngBounds
  	// Returns the geographical bounds visible in the current map view
  	getBounds: function () {
  		var bounds = this.getPixelBounds(),
  		    sw = this.unproject(bounds.getBottomLeft()),
  		    ne = this.unproject(bounds.getTopRight());
  
  		return new LatLngBounds(sw, ne);
  	},
  
  	// @method getMinZoom(): Number
  	// Returns the minimum zoom level of the map (if set in the `minZoom` option of the map or of any layers), or `0` by default.
  	getMinZoom: function () {
  		return this.options.minZoom === undefined ? this._layersMinZoom || 0 : this.options.minZoom;
  	},
  
  	// @method getMaxZoom(): Number
  	// Returns the maximum zoom level of the map (if set in the `maxZoom` option of the map or of any layers).
  	getMaxZoom: function () {
  		return this.options.maxZoom === undefined ?
  			(this._layersMaxZoom === undefined ? Infinity : this._layersMaxZoom) :
  			this.options.maxZoom;
  	},
  
  	// @method getBoundsZoom(bounds: LatLngBounds, inside?: Boolean, padding?: Point): Number
  	// Returns the maximum zoom level on which the given bounds fit to the map
  	// view in its entirety. If `inside` (optional) is set to `true`, the method
  	// instead returns the minimum zoom level on which the map view fits into
  	// the given bounds in its entirety.
  	getBoundsZoom: function (bounds, inside, padding) { // (LatLngBounds[, Boolean, Point]) -> Number
  		bounds = toLatLngBounds(bounds);
  		padding = toPoint(padding || [0, 0]);
  
  		var zoom = this.getZoom() || 0,
  		    min = this.getMinZoom(),
  		    max = this.getMaxZoom(),
  		    nw = bounds.getNorthWest(),
  		    se = bounds.getSouthEast(),
  		    size = this.getSize().subtract(padding),
  		    boundsSize = toBounds(this.project(se, zoom), this.project(nw, zoom)).getSize(),
  		    snap = Browser.any3d ? this.options.zoomSnap : 1,
  		    scalex = size.x / boundsSize.x,
  		    scaley = size.y / boundsSize.y,
  		    scale = inside ? Math.max(scalex, scaley) : Math.min(scalex, scaley);
  
  		zoom = this.getScaleZoom(scale, zoom);
  
  		if (snap) {
  			zoom = Math.round(zoom / (snap / 100)) * (snap / 100); // don't jump if within 1% of a snap level
  			zoom = inside ? Math.ceil(zoom / snap) * snap : Math.floor(zoom / snap) * snap;
  		}
  
  		return Math.max(min, Math.min(max, zoom));
  	},
  
  	// @method getSize(): Point
  	// Returns the current size of the map container (in pixels).
  	getSize: function () {
  		if (!this._size || this._sizeChanged) {
  			this._size = new Point(
  				this._container.clientWidth || 0,
  				this._container.clientHeight || 0);
  
  			this._sizeChanged = false;
  		}
  		return this._size.clone();
  	},
  
  	// @method getPixelBounds(): Bounds
  	// Returns the bounds of the current map view in projected pixel
  	// coordinates (sometimes useful in layer and overlay implementations).
  	getPixelBounds: function (center, zoom) {
  		var topLeftPoint = this._getTopLeftPoint(center, zoom);
  		return new Bounds(topLeftPoint, topLeftPoint.add(this.getSize()));
  	},
  
  	// TODO: Check semantics - isn't the pixel origin the 0,0 coord relative to
  	// the map pane? "left point of the map layer" can be confusing, specially
  	// since there can be negative offsets.
  	// @method getPixelOrigin(): Point
  	// Returns the projected pixel coordinates of the top left point of
  	// the map layer (useful in custom layer and overlay implementations).
  	getPixelOrigin: function () {
  		this._checkIfLoaded();
  		return this._pixelOrigin;
  	},
  
  	// @method getPixelWorldBounds(zoom?: Number): Bounds
  	// Returns the world's bounds in pixel coordinates for zoom level `zoom`.
  	// If `zoom` is omitted, the map's current zoom level is used.
  	getPixelWorldBounds: function (zoom) {
  		return this.options.crs.getProjectedBounds(zoom === undefined ? this.getZoom() : zoom);
  	},
  
  	// @section Other Methods
  
  	// @method getPane(pane: String|HTMLElement): HTMLElement
  	// Returns a [map pane](#map-pane), given its name or its HTML element (its identity).
  	getPane: function (pane) {
  		return typeof pane === 'string' ? this._panes[pane] : pane;
  	},
  
  	// @method getPanes(): Object
  	// Returns a plain object containing the names of all [panes](#map-pane) as keys and
  	// the panes as values.
  	getPanes: function () {
  		return this._panes;
  	},
  
  	// @method getContainer: HTMLElement
  	// Returns the HTML element that contains the map.
  	getContainer: function () {
  		return this._container;
  	},
  
  
  	// @section Conversion Methods
  
  	// @method getZoomScale(toZoom: Number, fromZoom: Number): Number
  	// Returns the scale factor to be applied to a map transition from zoom level
  	// `fromZoom` to `toZoom`. Used internally to help with zoom animations.
  	getZoomScale: function (toZoom, fromZoom) {
  		// TODO replace with universal implementation after refactoring projections
  		var crs = this.options.crs;
  		fromZoom = fromZoom === undefined ? this._zoom : fromZoom;
  		return crs.scale(toZoom) / crs.scale(fromZoom);
  	},
  
  	// @method getScaleZoom(scale: Number, fromZoom: Number): Number
  	// Returns the zoom level that the map would end up at, if it is at `fromZoom`
  	// level and everything is scaled by a factor of `scale`. Inverse of
  	// [`getZoomScale`](#map-getZoomScale).
  	getScaleZoom: function (scale, fromZoom) {
  		var crs = this.options.crs;
  		fromZoom = fromZoom === undefined ? this._zoom : fromZoom;
  		var zoom = crs.zoom(scale * crs.scale(fromZoom));
  		return isNaN(zoom) ? Infinity : zoom;
  	},
  
  	// @method project(latlng: LatLng, zoom: Number): Point
  	// Projects a geographical coordinate `LatLng` according to the projection
  	// of the map's CRS, then scales it according to `zoom` and the CRS's
  	// `Transformation`. The result is pixel coordinate relative to
  	// the CRS origin.
  	project: function (latlng, zoom) {
  		zoom = zoom === undefined ? this._zoom : zoom;
  		return this.options.crs.latLngToPoint(toLatLng(latlng), zoom);
  	},
  
  	// @method unproject(point: Point, zoom: Number): LatLng
  	// Inverse of [`project`](#map-project).
  	unproject: function (point, zoom) {
  		zoom = zoom === undefined ? this._zoom : zoom;
  		return this.options.crs.pointToLatLng(toPoint(point), zoom);
  	},
  
  	// @method layerPointToLatLng(point: Point): LatLng
  	// Given a pixel coordinate relative to the [origin pixel](#map-getpixelorigin),
  	// returns the corresponding geographical coordinate (for the current zoom level).
  	layerPointToLatLng: function (point) {
  		var projectedPoint = toPoint(point).add(this.getPixelOrigin());
  		return this.unproject(projectedPoint);
  	},
  
  	// @method latLngToLayerPoint(latlng: LatLng): Point
  	// Given a geographical coordinate, returns the corresponding pixel coordinate
  	// relative to the [origin pixel](#map-getpixelorigin).
  	latLngToLayerPoint: function (latlng) {
  		var projectedPoint = this.project(toLatLng(latlng))._round();
  		return projectedPoint._subtract(this.getPixelOrigin());
  	},
  
  	// @method wrapLatLng(latlng: LatLng): LatLng
  	// Returns a `LatLng` where `lat` and `lng` has been wrapped according to the
  	// map's CRS's `wrapLat` and `wrapLng` properties, if they are outside the
  	// CRS's bounds.
  	// By default this means longitude is wrapped around the dateline so its
  	// value is between -180 and +180 degrees.
  	wrapLatLng: function (latlng) {
  		return this.options.crs.wrapLatLng(toLatLng(latlng));
  	},
  
  	// @method wrapLatLngBounds(bounds: LatLngBounds): LatLngBounds
  	// Returns a `LatLngBounds` with the same size as the given one, ensuring that
  	// its center is within the CRS's bounds.
  	// By default this means the center longitude is wrapped around the dateline so its
  	// value is between -180 and +180 degrees, and the majority of the bounds
  	// overlaps the CRS's bounds.
  	wrapLatLngBounds: function (latlng) {
  		return this.options.crs.wrapLatLngBounds(toLatLngBounds(latlng));
  	},
  
  	// @method distance(latlng1: LatLng, latlng2: LatLng): Number
  	// Returns the distance between two geographical coordinates according to
  	// the map's CRS. By default this measures distance in meters.
  	distance: function (latlng1, latlng2) {
  		return this.options.crs.distance(toLatLng(latlng1), toLatLng(latlng2));
  	},
  
  	// @method containerPointToLayerPoint(point: Point): Point
  	// Given a pixel coordinate relative to the map container, returns the corresponding
  	// pixel coordinate relative to the [origin pixel](#map-getpixelorigin).
  	containerPointToLayerPoint: function (point) { // (Point)
  		return toPoint(point).subtract(this._getMapPanePos());
  	},
  
  	// @method layerPointToContainerPoint(point: Point): Point
  	// Given a pixel coordinate relative to the [origin pixel](#map-getpixelorigin),
  	// returns the corresponding pixel coordinate relative to the map container.
  	layerPointToContainerPoint: function (point) { // (Point)
  		return toPoint(point).add(this._getMapPanePos());
  	},
  
  	// @method containerPointToLatLng(point: Point): LatLng
  	// Given a pixel coordinate relative to the map container, returns
  	// the corresponding geographical coordinate (for the current zoom level).
  	containerPointToLatLng: function (point) {
  		var layerPoint = this.containerPointToLayerPoint(toPoint(point));
  		return this.layerPointToLatLng(layerPoint);
  	},
  
  	// @method latLngToContainerPoint(latlng: LatLng): Point
  	// Given a geographical coordinate, returns the corresponding pixel coordinate
  	// relative to the map container.
  	latLngToContainerPoint: function (latlng) {
  		return this.layerPointToContainerPoint(this.latLngToLayerPoint(toLatLng(latlng)));
  	},
  
  	// @method mouseEventToContainerPoint(ev: MouseEvent): Point
  	// Given a MouseEvent object, returns the pixel coordinate relative to the
  	// map container where the event took place.
  	mouseEventToContainerPoint: function (e) {
  		return DomEvent.getMousePosition(e, this._container);
  	},
  
  	// @method mouseEventToLayerPoint(ev: MouseEvent): Point
  	// Given a MouseEvent object, returns the pixel coordinate relative to
  	// the [origin pixel](#map-getpixelorigin) where the event took place.
  	mouseEventToLayerPoint: function (e) {
  		return this.containerPointToLayerPoint(this.mouseEventToContainerPoint(e));
  	},
  
  	// @method mouseEventToLatLng(ev: MouseEvent): LatLng
  	// Given a MouseEvent object, returns geographical coordinate where the
  	// event took place.
  	mouseEventToLatLng: function (e) { // (MouseEvent)
  		return this.layerPointToLatLng(this.mouseEventToLayerPoint(e));
  	},
  
  
  	// map initialization methods
  
  	_initContainer: function (id) {
  		var container = this._container = DomUtil.get(id);
  
  		if (!container) {
  			throw new Error('Map container not found.');
  		} else if (container._leaflet_id) {
  			throw new Error('Map container is already initialized.');
  		}
  
  		DomEvent.on(container, 'scroll', this._onScroll, this);
  		this._containerId = Util.stamp(container);
  	},
  
  	_initLayout: function () {
  		var container = this._container;
  
  		this._fadeAnimated = this.options.fadeAnimation && Browser.any3d;
  
  		DomUtil.addClass(container, 'leaflet-container' +
  			(Browser.touch ? ' leaflet-touch' : '') +
  			(Browser.retina ? ' leaflet-retina' : '') +
  			(Browser.ielt9 ? ' leaflet-oldie' : '') +
  			(Browser.safari ? ' leaflet-safari' : '') +
  			(this._fadeAnimated ? ' leaflet-fade-anim' : ''));
  
  		var position = DomUtil.getStyle(container, 'position');
  
  		if (position !== 'absolute' && position !== 'relative' && position !== 'fixed') {
  			container.style.position = 'relative';
  		}
  
  		this._initPanes();
  
  		if (this._initControlPos) {
  			this._initControlPos();
  		}
  	},
  
  	_initPanes: function () {
  		var panes = this._panes = {};
  		this._paneRenderers = {};
  
  		// @section
  		//
  		// Panes are DOM elements used to control the ordering of layers on the map. You
  		// can access panes with [`map.getPane`](#map-getpane) or
  		// [`map.getPanes`](#map-getpanes) methods. New panes can be created with the
  		// [`map.createPane`](#map-createpane) method.
  		//
  		// Every map has the following default panes that differ only in zIndex.
  		//
  		// @pane mapPane: HTMLElement = 'auto'
  		// Pane that contains all other map panes
  
  		this._mapPane = this.createPane('mapPane', this._container);
  		DomUtil.setPosition(this._mapPane, new Point(0, 0));
  
  		// @pane tilePane: HTMLElement = 200
  		// Pane for `GridLayer`s and `TileLayer`s
  		this.createPane('tilePane');
  		// @pane overlayPane: HTMLElement = 400
  		// Pane for vectors (`Path`s, like `Polyline`s and `Polygon`s), `ImageOverlay`s and `VideoOverlay`s
  		this.createPane('shadowPane');
  		// @pane shadowPane: HTMLElement = 500
  		// Pane for overlay shadows (e.g. `Marker` shadows)
  		this.createPane('overlayPane');
  		// @pane markerPane: HTMLElement = 600
  		// Pane for `Icon`s of `Marker`s
  		this.createPane('markerPane');
  		// @pane tooltipPane: HTMLElement = 650
  		// Pane for `Tooltip`s.
  		this.createPane('tooltipPane');
  		// @pane popupPane: HTMLElement = 700
  		// Pane for `Popup`s.
  		this.createPane('popupPane');
  
  		if (!this.options.markerZoomAnimation) {
  			DomUtil.addClass(panes.markerPane, 'leaflet-zoom-hide');
  			DomUtil.addClass(panes.shadowPane, 'leaflet-zoom-hide');
  		}
  	},
  
  
  	// private methods that modify map state
  
  	// @section Map state change events
  	_resetView: function (center, zoom) {
  		DomUtil.setPosition(this._mapPane, new Point(0, 0));
  
  		var loading = !this._loaded;
  		this._loaded = true;
  		zoom = this._limitZoom(zoom);
  
  		this.fire('viewprereset');
  
  		var zoomChanged = this._zoom !== zoom;
  		this
  			._moveStart(zoomChanged, false)
  			._move(center, zoom)
  			._moveEnd(zoomChanged);
  
  		// @event viewreset: Event
  		// Fired when the map needs to redraw its content (this usually happens
  		// on map zoom or load). Very useful for creating custom overlays.
  		this.fire('viewreset');
  
  		// @event load: Event
  		// Fired when the map is initialized (when its center and zoom are set
  		// for the first time).
  		if (loading) {
  			this.fire('load');
  		}
  	},
  
  	_moveStart: function (zoomChanged, noMoveStart) {
  		// @event zoomstart: Event
  		// Fired when the map zoom is about to change (e.g. before zoom animation).
  		// @event movestart: Event
  		// Fired when the view of the map starts changing (e.g. user starts dragging the map).
  		if (zoomChanged) {
  			this.fire('zoomstart');
  		}
  		if (!noMoveStart) {
  			this.fire('movestart');
  		}
  		return this;
  	},
  
  	_move: function (center, zoom, data) {
  		if (zoom === undefined) {
  			zoom = this._zoom;
  		}
  		var zoomChanged = this._zoom !== zoom;
  
  		this._zoom = zoom;
  		this._lastCenter = center;
  		this._pixelOrigin = this._getNewPixelOrigin(center);
  
  		// @event zoom: Event
  		// Fired repeatedly during any change in zoom level, including zoom
  		// and fly animations.
  		if (zoomChanged || (data && data.pinch)) {	// Always fire 'zoom' if pinching because #3530
  			this.fire('zoom', data);
  		}
  
  		// @event move: Event
  		// Fired repeatedly during any movement of the map, including pan and
  		// fly animations.
  		return this.fire('move', data);
  	},
  
  	_moveEnd: function (zoomChanged) {
  		// @event zoomend: Event
  		// Fired when the map has changed, after any animations.
  		if (zoomChanged) {
  			this.fire('zoomend');
  		}
  
  		// @event moveend: Event
  		// Fired when the center of the map stops changing (e.g. user stopped
  		// dragging the map).
  		return this.fire('moveend');
  	},
  
  	_stop: function () {
  		Util.cancelAnimFrame(this._flyToFrame);
  		if (this._panAnim) {
  			this._panAnim.stop();
  		}
  		return this;
  	},
  
  	_rawPanBy: function (offset) {
  		DomUtil.setPosition(this._mapPane, this._getMapPanePos().subtract(offset));
  	},
  
  	_getZoomSpan: function () {
  		return this.getMaxZoom() - this.getMinZoom();
  	},
  
  	_panInsideMaxBounds: function () {
  		if (!this._enforcingBounds) {
  			this.panInsideBounds(this.options.maxBounds);
  		}
  	},
  
  	_checkIfLoaded: function () {
  		if (!this._loaded) {
  			throw new Error('Set map center and zoom first.');
  		}
  	},
  
  	// DOM event handling
  
  	// @section Interaction events
  	_initEvents: function (remove) {
  		this._targets = {};
  		this._targets[Util.stamp(this._container)] = this;
  
  		var onOff = remove ? DomEvent.off : DomEvent.on;
  
  		// @event click: MouseEvent
  		// Fired when the user clicks (or taps) the map.
  		// @event dblclick: MouseEvent
  		// Fired when the user double-clicks (or double-taps) the map.
  		// @event mousedown: MouseEvent
  		// Fired when the user pushes the mouse button on the map.
  		// @event mouseup: MouseEvent
  		// Fired when the user releases the mouse button on the map.
  		// @event mouseover: MouseEvent
  		// Fired when the mouse enters the map.
  		// @event mouseout: MouseEvent
  		// Fired when the mouse leaves the map.
  		// @event mousemove: MouseEvent
  		// Fired while the mouse moves over the map.
  		// @event contextmenu: MouseEvent
  		// Fired when the user pushes the right mouse button on the map, prevents
  		// default browser context menu from showing if there are listeners on
  		// this event. Also fired on mobile when the user holds a single touch
  		// for a second (also called long press).
  		// @event keypress: KeyboardEvent
  		// Fired when the user presses a key from the keyboard while the map is focused.
  		onOff(this._container, 'click dblclick mousedown mouseup ' +
  			'mouseover mouseout mousemove contextmenu keypress', this._handleDOMEvent, this);
  
  		if (this.options.trackResize) {
  			onOff(window, 'resize', this._onResize, this);
  		}
  
  		if (Browser.any3d && this.options.transform3DLimit) {
  			(remove ? this.off : this.on).call(this, 'moveend', this._onMoveEnd);
  		}
  	},
  
  	_onResize: function () {
  		Util.cancelAnimFrame(this._resizeRequest);
  		this._resizeRequest = Util.requestAnimFrame(
  		        function () { this.invalidateSize({debounceMoveend: true}); }, this);
  	},
  
  	_onScroll: function () {
  		this._container.scrollTop  = 0;
  		this._container.scrollLeft = 0;
  	},
  
  	_onMoveEnd: function () {
  		var pos = this._getMapPanePos();
  		if (Math.max(Math.abs(pos.x), Math.abs(pos.y)) >= this.options.transform3DLimit) {
  			// https://bugzilla.mozilla.org/show_bug.cgi?id=1203873 but Webkit also have
  			// a pixel offset on very high values, see: http://jsfiddle.net/dg6r5hhb/
  			this._resetView(this.getCenter(), this.getZoom());
  		}
  	},
  
  	_findEventTargets: function (e, type) {
  		var targets = [],
  		    target,
  		    isHover = type === 'mouseout' || type === 'mouseover',
  		    src = e.target || e.srcElement,
  		    dragging = false;
  
  		while (src) {
  			target = this._targets[Util.stamp(src)];
  			if (target && (type === 'click' || type === 'preclick') && !e._simulated && this._draggableMoved(target)) {
  				// Prevent firing click after you just dragged an object.
  				dragging = true;
  				break;
  			}
  			if (target && target.listens(type, true)) {
  				if (isHover && !DomEvent.isExternalTarget(src, e)) { break; }
  				targets.push(target);
  				if (isHover) { break; }
  			}
  			if (src === this._container) { break; }
  			src = src.parentNode;
  		}
  		if (!targets.length && !dragging && !isHover && DomEvent.isExternalTarget(src, e)) {
  			targets = [this];
  		}
  		return targets;
  	},
  
  	_handleDOMEvent: function (e) {
  		if (!this._loaded || DomEvent.skipped(e)) { return; }
  
  		var type = e.type;
  
  		if (type === 'mousedown' || type === 'keypress') {
  			// prevents outline when clicking on keyboard-focusable element
  			DomUtil.preventOutline(e.target || e.srcElement);
  		}
  
  		this._fireDOMEvent(e, type);
  	},
  
  	_mouseEvents: ['click', 'dblclick', 'mouseover', 'mouseout', 'contextmenu'],
  
  	_fireDOMEvent: function (e, type, targets) {
  
  		if (e.type === 'click') {
  			// Fire a synthetic 'preclick' event which propagates up (mainly for closing popups).
  			// @event preclick: MouseEvent
  			// Fired before mouse click on the map (sometimes useful when you
  			// want something to happen on click before any existing click
  			// handlers start running).
  			var synth = Util.extend({}, e);
  			synth.type = 'preclick';
  			this._fireDOMEvent(synth, synth.type, targets);
  		}
  
  		if (e._stopped) { return; }
  
  		// Find the layer the event is propagating from and its parents.
  		targets = (targets || []).concat(this._findEventTargets(e, type));
  
  		if (!targets.length) { return; }
  
  		var target = targets[0];
  		if (type === 'contextmenu' && target.listens(type, true)) {
  			DomEvent.preventDefault(e);
  		}
  
  		var data = {
  			originalEvent: e
  		};
  
  		if (e.type !== 'keypress') {
  			var isMarker = target.getLatLng && (!target._radius || target._radius <= 10);
  			data.containerPoint = isMarker ?
  				this.latLngToContainerPoint(target.getLatLng()) : this.mouseEventToContainerPoint(e);
  			data.layerPoint = this.containerPointToLayerPoint(data.containerPoint);
  			data.latlng = isMarker ? target.getLatLng() : this.layerPointToLatLng(data.layerPoint);
  		}
  
  		for (var i = 0; i < targets.length; i++) {
  			targets[i].fire(type, data, true);
  			if (data.originalEvent._stopped ||
  				(targets[i].options.bubblingMouseEvents === false && Util.indexOf(this._mouseEvents, type) !== -1)) { return; }
  		}
  	},
  
  	_draggableMoved: function (obj) {
  		obj = obj.dragging && obj.dragging.enabled() ? obj : this;
  		return (obj.dragging && obj.dragging.moved()) || (this.boxZoom && this.boxZoom.moved());
  	},
  
  	_clearHandlers: function () {
  		for (var i = 0, len = this._handlers.length; i < len; i++) {
  			this._handlers[i].disable();
  		}
  	},
  
  	// @section Other Methods
  
  	// @method whenReady(fn: Function, context?: Object): this
  	// Runs the given function `fn` when the map gets initialized with
  	// a view (center and zoom) and at least one layer, or immediately
  	// if it's already initialized, optionally passing a function context.
  	whenReady: function (callback, context) {
  		if (this._loaded) {
  			callback.call(context || this, {target: this});
  		} else {
  			this.on('load', callback, context);
  		}
  		return this;
  	},
  
  
  	// private methods for getting map state
  
  	_getMapPanePos: function () {
  		return DomUtil.getPosition(this._mapPane) || new Point(0, 0);
  	},
  
  	_moved: function () {
  		var pos = this._getMapPanePos();
  		return pos && !pos.equals([0, 0]);
  	},
  
  	_getTopLeftPoint: function (center, zoom) {
  		var pixelOrigin = center && zoom !== undefined ?
  			this._getNewPixelOrigin(center, zoom) :
  			this.getPixelOrigin();
  		return pixelOrigin.subtract(this._getMapPanePos());
  	},
  
  	_getNewPixelOrigin: function (center, zoom) {
  		var viewHalf = this.getSize()._divideBy(2);
  		return this.project(center, zoom)._subtract(viewHalf)._add(this._getMapPanePos())._round();
  	},
  
  	_latLngToNewLayerPoint: function (latlng, zoom, center) {
  		var topLeft = this._getNewPixelOrigin(center, zoom);
  		return this.project(latlng, zoom)._subtract(topLeft);
  	},
  
  	_latLngBoundsToNewLayerBounds: function (latLngBounds, zoom, center) {
  		var topLeft = this._getNewPixelOrigin(center, zoom);
  		return toBounds([
  			this.project(latLngBounds.getSouthWest(), zoom)._subtract(topLeft),
  			this.project(latLngBounds.getNorthWest(), zoom)._subtract(topLeft),
  			this.project(latLngBounds.getSouthEast(), zoom)._subtract(topLeft),
  			this.project(latLngBounds.getNorthEast(), zoom)._subtract(topLeft)
  		]);
  	},
  
  	// layer point of the current center
  	_getCenterLayerPoint: function () {
  		return this.containerPointToLayerPoint(this.getSize()._divideBy(2));
  	},
  
  	// offset of the specified place to the current center in pixels
  	_getCenterOffset: function (latlng) {
  		return this.latLngToLayerPoint(latlng).subtract(this._getCenterLayerPoint());
  	},
  
  	// adjust center for view to get inside bounds
  	_limitCenter: function (center, zoom, bounds) {
  
  		if (!bounds) { return center; }
  
  		var centerPoint = this.project(center, zoom),
  		    viewHalf = this.getSize().divideBy(2),
  		    viewBounds = new Bounds(centerPoint.subtract(viewHalf), centerPoint.add(viewHalf)),
  		    offset = this._getBoundsOffset(viewBounds, bounds, zoom);
  
  		// If offset is less than a pixel, ignore.
  		// This prevents unstable projections from getting into
  		// an infinite loop of tiny offsets.
  		if (offset.round().equals([0, 0])) {
  			return center;
  		}
  
  		return this.unproject(centerPoint.add(offset), zoom);
  	},
  
  	// adjust offset for view to get inside bounds
  	_limitOffset: function (offset, bounds) {
  		if (!bounds) { return offset; }
  
  		var viewBounds = this.getPixelBounds(),
  		    newBounds = new Bounds(viewBounds.min.add(offset), viewBounds.max.add(offset));
  
  		return offset.add(this._getBoundsOffset(newBounds, bounds));
  	},
  
  	// returns offset needed for pxBounds to get inside maxBounds at a specified zoom
  	_getBoundsOffset: function (pxBounds, maxBounds, zoom) {
  		var projectedMaxBounds = toBounds(
  		        this.project(maxBounds.getNorthEast(), zoom),
  		        this.project(maxBounds.getSouthWest(), zoom)
  		    ),
  		    minOffset = projectedMaxBounds.min.subtract(pxBounds.min),
  		    maxOffset = projectedMaxBounds.max.subtract(pxBounds.max),
  
  		    dx = this._rebound(minOffset.x, -maxOffset.x),
  		    dy = this._rebound(minOffset.y, -maxOffset.y);
  
  		return new Point(dx, dy);
  	},
  
  	_rebound: function (left, right) {
  		return left + right > 0 ?
  			Math.round(left - right) / 2 :
  			Math.max(0, Math.ceil(left)) - Math.max(0, Math.floor(right));
  	},
  
  	_limitZoom: function (zoom) {
  		var min = this.getMinZoom(),
  		    max = this.getMaxZoom(),
  		    snap = Browser.any3d ? this.options.zoomSnap : 1;
  		if (snap) {
  			zoom = Math.round(zoom / snap) * snap;
  		}
  		return Math.max(min, Math.min(max, zoom));
  	},
  
  	_onPanTransitionStep: function () {
  		this.fire('move');
  	},
  
  	_onPanTransitionEnd: function () {
  		DomUtil.removeClass(this._mapPane, 'leaflet-pan-anim');
  		this.fire('moveend');
  	},
  
  	_tryAnimatedPan: function (center, options) {
  		// difference between the new and current centers in pixels
  		var offset = this._getCenterOffset(center)._trunc();
  
  		// don't animate too far unless animate: true specified in options
  		if ((options && options.animate) !== true && !this.getSize().contains(offset)) { return false; }
  
  		this.panBy(offset, options);
  
  		return true;
  	},
  
  	_createAnimProxy: function () {
  
  		var proxy = this._proxy = DomUtil.create('div', 'leaflet-proxy leaflet-zoom-animated');
  		this._panes.mapPane.appendChild(proxy);
  
  		this.on('zoomanim', function (e) {
  			var prop = DomUtil.TRANSFORM,
  			    transform = this._proxy.style[prop];
  
  			DomUtil.setTransform(this._proxy, this.project(e.center, e.zoom), this.getZoomScale(e.zoom, 1));
  
  			// workaround for case when transform is the same and so transitionend event is not fired
  			if (transform === this._proxy.style[prop] && this._animatingZoom) {
  				this._onZoomTransitionEnd();
  			}
  		}, this);
  
  		this.on('load moveend', function () {
  			var c = this.getCenter(),
  			    z = this.getZoom();
  			DomUtil.setTransform(this._proxy, this.project(c, z), this.getZoomScale(z, 1));
  		}, this);
  
  		this._on('unload', this._destroyAnimProxy, this);
  	},
  
  	_destroyAnimProxy: function () {
  		DomUtil.remove(this._proxy);
  		delete this._proxy;
  	},
  
  	_catchTransitionEnd: function (e) {
  		if (this._animatingZoom && e.propertyName.indexOf('transform') >= 0) {
  			this._onZoomTransitionEnd();
  		}
  	},
  
  	_nothingToAnimate: function () {
  		return !this._container.getElementsByClassName('leaflet-zoom-animated').length;
  	},
  
  	_tryAnimatedZoom: function (center, zoom, options) {
  
  		if (this._animatingZoom) { return true; }
  
  		options = options || {};
  
  		// don't animate if disabled, not supported or zoom difference is too large
  		if (!this._zoomAnimated || options.animate === false || this._nothingToAnimate() ||
  		        Math.abs(zoom - this._zoom) > this.options.zoomAnimationThreshold) { return false; }
  
  		// offset is the pixel coords of the zoom origin relative to the current center
  		var scale = this.getZoomScale(zoom),
  		    offset = this._getCenterOffset(center)._divideBy(1 - 1 / scale);
  
  		// don't animate if the zoom origin isn't within one screen from the current center, unless forced
  		if (options.animate !== true && !this.getSize().contains(offset)) { return false; }
  
  		Util.requestAnimFrame(function () {
  			this
  			    ._moveStart(true, false)
  			    ._animateZoom(center, zoom, true);
  		}, this);
  
  		return true;
  	},
  
  	_animateZoom: function (center, zoom, startAnim, noUpdate) {
  		if (!this._mapPane) { return; }
  
  		if (startAnim) {
  			this._animatingZoom = true;
  
  			// remember what center/zoom to set after animation
  			this._animateToCenter = center;
  			this._animateToZoom = zoom;
  
  			DomUtil.addClass(this._mapPane, 'leaflet-zoom-anim');
  		}
  
  		// @event zoomanim: ZoomAnimEvent
  		// Fired at least once per zoom animation. For continous zoom, like pinch zooming, fired once per frame during zoom.
  		this.fire('zoomanim', {
  			center: center,
  			zoom: zoom,
  			noUpdate: noUpdate
  		});
  
  		// Work around webkit not firing 'transitionend', see https://github.com/Leaflet/Leaflet/issues/3689, 2693
  		setTimeout(Util.bind(this._onZoomTransitionEnd, this), 250);
  	},
  
  	_onZoomTransitionEnd: function () {
  		if (!this._animatingZoom) { return; }
  
  		if (this._mapPane) {
  			DomUtil.removeClass(this._mapPane, 'leaflet-zoom-anim');
  		}
  
  		this._animatingZoom = false;
  
  		this._move(this._animateToCenter, this._animateToZoom);
  
  		// This anim frame should prevent an obscure iOS webkit tile loading race condition.
  		Util.requestAnimFrame(function () {
  			this._moveEnd(true);
  		}, this);
  	}
  });
  
  // @section
  
  // @factory L.map(id: String, options?: Map options)
  // Instantiates a map object given the DOM ID of a `<div>` element
  // and optionally an object literal with `Map options`.
  //
  // @alternative
  // @factory L.map(el: HTMLElement, options?: Map options)
  // Instantiates a map object given an instance of a `<div>` HTML element
  // and optionally an object literal with `Map options`.
  export function createMap(id, options) {
  	return new Map(id, options);
  }
  