Move Metadata, CodeMirror and title functions in separate files

www/common/common-metadata.js

@@ -0,0 +1,51 @@
+define(function () {
+    var module = {};
+
+    module.create = function (UserList, Title, cfg) {
+        var exp = {};
+
+        var updateMetadata = exp.update = function (shjson) {
+            // Extract the user list (metadata) from the hyperjson
+            var json = (!shjson || typeof shjson !== "string") ? "" : JSON.parse(shjson);
+            var titleUpdated = false;
+            var metadata;
+            if (Array.isArray(json)) {
+                metadata = json[3] && json[3].metadata;
+            } else {
+                metadata = json.metadata;
+            }
+            if (typeof metadata === "object") {
+                if (metadata.users) {
+                    var userData = metadata.users;
+                    // Update the local user data
+                    UserList.addToUserData(userData);
+                }
+                if (metadata.defaultTitle) {
+                    Title.updateDefaultTitle(metadata.defaultTitle);
+                }
+                if (typeof metadata.title !== "undefined") {
+                    Title.updateTitle(metadata.title || Title.defaultTitle);
+                    titleUpdated = true;
+                }
+                if (metadata.slideOptions && cfg.slideOptions) {
+                    cfg.slideOptions(metadata.slideOptions);
+                }
+                if (metadata.color && cfg.slideColors) {
+                    cfg.slideColors(metadata.color, metadata.backColor);
+                }
+                if (typeof(metadata.palette) !== 'undefined' && cfg.updatePalette) {
+                    cfg.updatePalette(metadata.palette);
+                }
+            }
+            if (!titleUpdated) {
+                Title.updateTitle(Title.defaultTitle);
+            }
+        };
+
+        return exp;
+    };
+
+    return module;
+});
+
+