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node_modules/leaflet/src/layer/marker/Icon.Default.js

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+import {Icon} from './Icon';
+import * as DomUtil from '../../dom/DomUtil';
+
+/*
+ * @miniclass Icon.Default (Icon)
+ * @aka L.Icon.Default
+ * @section
+ *
+ * A trivial subclass of `Icon`, represents the icon to use in `Marker`s when
+ * no icon is specified. Points to the blue marker image distributed with Leaflet
+ * releases.
+ *
+ * In order to customize the default icon, just change the properties of `L.Icon.Default.prototype.options`
+ * (which is a set of `Icon options`).
+ *
+ * If you want to _completely_ replace the default icon, override the
+ * `L.Marker.prototype.options.icon` with your own icon instead.
+ */
+
+export var IconDefault = Icon.extend({
+
+	options: {
+		iconUrl:       'marker-icon.png',
+		iconRetinaUrl: 'marker-icon-2x.png',
+		shadowUrl:     'marker-shadow.png',
+		iconSize:    [25, 41],
+		iconAnchor:  [12, 41],
+		popupAnchor: [1, -34],
+		tooltipAnchor: [16, -28],
+		shadowSize:  [41, 41]
+	},
+
+	_getIconUrl: function (name) {
+		if (typeof IconDefault.imagePath !== 'string') {	// Deprecated, backwards-compatibility only
+			IconDefault.imagePath = this._detectIconPath();
+		}
+
+		// @option imagePath: String
+		// `Icon.Default` will try to auto-detect the location of the
+		// blue icon images. If you are placing these images in a non-standard
+		// way, set this option to point to the right path.
+		return (this.options.imagePath || IconDefault.imagePath) + Icon.prototype._getIconUrl.call(this, name);
+	},
+
+	_stripUrl: function (path) {	// separate function to use in tests
+		var strip = function (str, re, idx) {
+			var match = re.exec(str);
+			return match && match[idx];
+		};
+		path = strip(path, /^url\((['"])?(.+)\1\)$/, 2);
+		return path && strip(path, /^(.*)marker-icon\.png$/, 1);
+	},
+
+	_detectIconPath: function () {
+		var el = DomUtil.create('div',  'leaflet-default-icon-path', document.body);
+		var path = DomUtil.getStyle(el, 'background-image') ||
+		           DomUtil.getStyle(el, 'backgroundImage');	// IE8
+
+		document.body.removeChild(el);
+		path = this._stripUrl(path);
+		if (path) { return path; }
+		var link = document.querySelector('link[href$="leaflet.css"]');
+		if (!link) { return ''; }
+		return link.href.substring(0, link.href.length - 'leaflet.css'.length - 1);
+	}
+});