check-in bower_components

bower_components/leaflet-plugins/layer/Layer.Deferred.js

@@ -0,0 +1,57 @@
+L.DeferredLayer = L.LayerGroup.extend({
+	options: {
+		js: [],
+		init: null
+	},
+
+	_script_cache: {},
+
+	initialize: function(options) {
+		L.Util.setOptions(this, options);
+		L.LayerGroup.prototype.initialize.apply(this);
+		this._loaded = false;
+	},
+
+	onAdd: function(map) {
+		L.LayerGroup.prototype.onAdd.apply(this, [map]);
+		if (this._loaded) return;
+		//console.info("Script cache", this._script_cache);
+		var loaded = function() {
+			//console.info("Loaded", this, this.options);
+			this._loaded = true;
+			var l = this.options.init();
+			if (l)
+				this.addLayer(l);
+		}
+		this._loadScripts(this.options.js.reverse(), L.Util.bind(loaded, this));
+	},
+
+	_loadScripts: function(scripts, cb, args) {
+		if (!scripts || scripts.length == 0)
+			return cb(args);
+		var _this = this, s = scripts.pop(), c;
+		c = this._script_cache[s];
+		if (c === undefined) {
+			c = {url: s, wait: []};
+			//console.info("Load ", s);
+			var script = document.createElement('script');
+			script.src = s;
+			script.type = 'text/javascript';
+			script.onload = function () {
+				//console.info("Element(cb)", c.e.readyState);
+				c.e.readyState = "completed";
+				var i = 0;
+				for (i = 0; i < c.wait.length; i++)
+					c.wait[i]();
+			}
+			c.e = script;
+			document.getElementsByTagName('head')[0].appendChild(script);
+		}
+		function _cb() { _this._loadScripts(scripts, cb, args); }
+		c.wait.push(_cb);
+		//console.info("Element", c.e.readyState);
+		if (c.e.readyState == "completed")
+			_cb();
+		this._script_cache[s] = c;
+	}
+});