web client: type module

1 files changed, 22 insertions, 0 deletions

diff --git a/web/type.js b/web/type.js
new file mode 100644
index 0000000..c597c0a
--- /dev/null
+++ b/web/type.js
@@ -0,0 +1,22 @@
+/*
+ * Copyright (c) 2012-2014 Kaarle Ritvanen
+ * See LICENSE file for license details
+ */
+
+define(["underscore"], function(_) {
+    function isList(meta) {
+	return _.contains(["list", "set"], meta.type);
+    }
+
+    function isCollection(meta) {
+	return meta.type == "collection" || isList(meta);
+    }
+
+    return {
+	isList: isList,
+	isCollection: isCollection,
+	isTreeNode: function(meta) {
+	    return meta.type == "model" || isCollection(meta);
+	}
+    };
+});