Introduce vaadinBootstrap.js and use it to init the widgetset

1 files changed, 115 insertions, 0 deletions

diff --git a/WebContent/VAADIN/vaadinBootstrap.js b/WebContent/VAADIN/vaadinBootstrap.js
new file mode 100644
index 0000000000..917aa2aa4a
--- /dev/null
+++ b/WebContent/VAADIN/vaadinBootstrap.js
@@ -0,0 +1,115 @@
+(function() {
+	var defaults;
+	var apps = {};
+	var themesLoaded = {};
+	var widgetsetsRequested = {}
+	var widgetsetApps = {};
+	
+	
+	var log = function() {
+		if (console && console.log) {
+			console.log(arguments);
+		}
+	}
+	
+	var loadTheme = function(url) {
+		log("loadTheme", url);
+		if(!themesLoaded[url]) {
+			var stylesheet = document.createElement('link');
+			stylesheet.setAttribute('rel', 'stylesheet');
+			stylesheet.setAttribute('type', 'text/css');
+			stylesheet.setAttribute('href', url + "/styles.css");
+			document.getElementsByTagName('head')[0].appendChild(stylesheet);
+			themesLoaded[url] = true;
+		}		
+	}
+	
+	var isWidgetsetLoaded = function(widgetset) {
+		var className = widgetset.replace(/\./g, "_");
+		return (typeof window[className]) != "undefined";
+	}
+	
+	var loadWidgetset = function(basePath, widgetset) {
+		if (widgetsetsRequested[widgetset]) {
+			//TODO Tell the widgetset to load another application
+			return;
+		}
+		log("load widgetset", basePath, widgetset)
+		setTimeout(function() {
+			if (!isWidgetsetLoaded(widgetset)) {
+				alert("Failed to load the widgetset: " + url);
+			}
+		}, 15000);
+		
+		var url = basePath + widgetset + "/" + widgetset + ".nocache.js?" + new Date().getTime();
+		
+		//document.write("<script type='text/javascript' src='"+url+"'></script>");
+		
+		var scriptTag = document.createElement('script');
+		scriptTag.setAttribute('type', 'text/javascript');
+		scriptTag.setAttribute('src', url);
+		document.getElementsByTagName('head')[0].appendChild(scriptTag);
+		
+		widgetsetsRequested[widgetset] = true;
+	}
+	
+	window.vaadin = window.vaadin || {
+		setDefaults: function(d) {
+			if (defaults) {
+				throw "Defaults already defined";
+			}
+			log("Got defaults", defaults)
+			defaults = d;
+		},
+		initApplication: function(appId, config) {
+			if (apps[appId]) {
+				throw "Application " + appId + " already initialized";
+			}
+			log("init application", appId, config);
+			var getConfig = function(name) {
+				var value = config[name];
+				if (value === undefined) {
+					value = defaults[name];
+				}
+				return value;
+			}
+
+			var themeUri = getConfig('themeUri');
+			if (themeUri) {
+				loadTheme(themeUri);
+			}
+			
+			var widgetsetBase = getConfig('widgetsetBase');
+			var widgetset = getConfig('widgetset');
+			if (widgetset && widgetsetBase) {
+				loadWidgetset(widgetsetBase, widgetset);
+				if (widgetsetApps[widgetset]) {
+					widgetsetApps[widgetset].push(appId);
+				}  else {
+					widgetsetApps[widgetset] = [appId];
+				}
+			}
+			
+			//Export public data
+			var app = {
+				'getConfig': getConfig
+			};
+			apps[appId] = app;
+			
+			return app;
+		},
+		getApp: function(appId) {
+			var app = apps[appId]; 
+			return app;
+		},
+		popWidgetsetApp: function(widgetset) {
+			if (widgetsetApps[widgetset]) {
+				return widgetsetApps[widgetset].pop();
+			} else {
+				return null;
+			}
+		}
+	};
+	
+	log('Vaadin bootstrap loaded');
+})();
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