LT-275: Creating measure flow component common section

Packages/ohif-core/client/helpers/data.js

@@ -0,0 +1,60 @@
+import { _ } from 'meteor/underscore';
+import { Template } from 'meteor/templating';
+
+/**
+ * Global Blaze UI helpers to manipulate data
+ */
+
+// Base extend function to be used by extend and clone helpers
+const extend = (...argsArray) => {
+    // Create the resulting object
+    const result = argsArray[0] || {};
+
+    // Extract the Spacebars kw hash
+    const kwHash = _.last(argsArray).hash;
+
+    // Extract the given objects
+    const objects = _.initial(argsArray);
+
+    // Iterate over the given objects
+    _.each(objects, current => {
+        // Stop here if the current argument is not an object
+        if (typeof current !== 'object') {
+            return;
+        }
+
+        // Extend the resulting object with the current argument object
+        _.extend(result, current);
+    });
+
+    // Extend the resulting object with the Spacebars kw hash
+    _.extend(result, kwHash);
+
+    // Return the resulting object
+    return result;
+};
+
+// Extend the first argument object it with the other argument objects
+Template.registerHelper('extend', (...argsArray) => {
+    return extend(...argsArray);
+});
+
+// Create a new object and extends it with the argument objects
+Template.registerHelper('clone', (...argsArray) => {
+    const newArgs = argsArray.slice();
+    newArgs.unshift({});
+    return extend(...newArgs);
+});
+
+// Choose the first truthy value in the given values
+Template.registerHelper('choose', (...values) => {
+    let result;
+    _.each(_.initial(values, 1), value => {
+        if (result) {
+            return;
+        }
+
+        result = value;
+    });
+    return result;
+});