loop through composite schemas in _findSchema method

src/js/Node.js

@@ -2040,18 +2040,35 @@ Node._findEnum = function (schema) {
  */
 Node._findSchema = function (schema, path) {
   var childSchema = schema;
+  var foundSchema = childSchema;
+
+  var allSchemas = schema.oneOf || schema.anyOf || schema.allOf;
+  if (!allSchemas) {
+    allSchemas = [schema];
+  }
+
+  for (var j = 0; j < allSchemas.length; j++) {
+    childSchema = allSchemas[j];
 
     for (var i = 0; i < path.length && childSchema; i++) {
       var key = path[i];
+
       if (typeof key === 'string' && childSchema.properties) {
-      childSchema = childSchema.properties[key] || null
+        childSchema = childSchema.properties[key] || null;
+        if (childSchema) {
+          foundSchema = childSchema;
+        }
       }
       else if (typeof key === 'number' && childSchema.items) {
-      childSchema = childSchema.items
+        childSchema = childSchema.items;
+        if (childSchema) {
+          foundSchema = childSchema;
+        }
       }
     }
 
-  return childSchema
+  }
+  return foundSchema
 };
 
 /**