Spec utils

https://fedorahosted.org/freeipa/ticket/3235

install/ui/src/freeipa/spec_util.js

@@ -0,0 +1,80 @@
+/*  Authors:
+ *    Petr Vobornik <pvoborni@redhat.com>
+ *
+ * Copyright (C) 2013 Red Hat
+ * see file 'COPYING' for use and warranty information
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+define(['dojo/_base/declare',
+        'dojo/_base/array',
+        'dojo/_base/lang'
+        ], function(declare, array, lang, construct) {
+
+    var undefined;
+
+    var exp = {
+
+        /**
+         * Set default value of spec's attribute when not already
+         *
+         * @param {Object} spec
+         * @param {String} attribute name
+         * @param {*} default value
+         * @param {Object} object
+         */
+        def: function(spec, attr_name, def) {
+
+            if (spec[attr_name] === undefined) {
+                spec[attr_name] = def;
+            }
+        },
+
+        /**
+         * Set spec[spec_attr_name] to obj[attr_name].
+         *
+         * Use def value if spec doesn't contain the value.
+         *
+         * Do nothing if no value is defined.
+         */
+        set: function(obj, spec, attr_name, def, spec_attr_name) {
+
+            spec_attr_name = spec_attr_name || attr_name;
+
+            if (spec[spec_attr_name] !== undefined) {
+                obj[attr_name] = spec[spec_attr_name];
+            } else if (def !== undefined) {
+                obj[attr_name] = def;
+            }
+        },
+
+
+        /**
+         * Set entity name as entity to spec if context contains entity
+         */
+        context_entity: function(spec, context) {
+
+            if (context.entity && !spec.entity) {
+                if (typeof context.entity === 'string') {
+                    spec.entity = context.entity;
+                } else {
+                    spec.entity = context.entity.name;
+                }
+            }
+        }
+    };
+
+    return exp;
+});