New builder: defaults when adding to array.

Author: davidlgj

src/directives/newArray.js

@@ -129,28 +129,52 @@ function(sel, sfPath, schemaForm) {
       });
 
       scope.appendToArray = function() {
-
         var empty;
 
-        // Same old add empty things to the array hack :(
-        if (scope.form && scope.form.schema) {
-          if (scope.form.schema.items) {
-            if (scope.form.schema.items.type === 'object') {
-              empty = {};
-            } else if (scope.form.schema.items.type === 'array') {
-              empty = [];
-            }
-          }
-        }
-
+        // Create and set an array if needed.
         var model = scope.modelArray;
         if (!model) {
-          // Create and set an array if needed.
           var selection = sfPath.parse(attrs.sfNewArray);
           model = [];
           sel(selection, scope, model);
           scope.modelArray = model;
         }
+
+        // Same old add empty things to the array hack :(
+        if (scope.form && scope.form.schema && scope.form.schema.items) {
+
+          var items = scope.form.schema.items;
+          if (items.type && items.type.indexOf('object') !== -1) {
+            empty = {};
+
+            // Check for possible defaults
+            if (!scope.options || scope.options.setSchemaDefaults !== false) {
+              empty = angular.isDefined(items['default']) ? items['default'] : empty;
+
+              // Check for defaults further down in the schema.
+              // If the default instance sets the new array item to something falsy, i.e. null
+              // then there is no need to go further down.
+              if (empty) {
+                schemaForm.traverseSchema(items, function(prop, path) {
+                  if (angular.isDefined(prop['default'])) {
+                    sel(path, empty, prop['default']);
+                  }
+                });
+              }
+            }
+
+          } else if (items.type && items.type.indexOf('array') !== -1) {
+            empty = [];
+            if (!scope.options || scope.options.setSchemaDefaults !== false) {
+              empty = items['default'] || empty;
+            }
+          } else {
+            // No type? could still have defaults.
+            if (!scope.options || scope.options.setSchemaDefaults !== false) {
+              empty = items['default'] || empty;
+            }
+          }
+        }
         model.push(empty);
 
         return model;