1 files changed, 43 insertions, 0 deletions
diff --git a/web-ui/app/js/helpers/iterator.js b/web-ui/app/js/helpers/iterator.js
new file mode 100644
index 00000000..9d8358a7
--- /dev/null
+++ b/web-ui/app/js/helpers/iterator.js
@@ -0,0 +1,43 @@
+define(function () {
+
+  return Iterator;
+
+  function Iterator(elems, startingIndex) {
+
+    this.index = startingIndex || 0;
+    this.elems = elems;
+
+    this.hasPrevious = function () {
+      return this.index != 0;
+    };
+
+    this.hasNext = function () {
+      return this.index < this.elems.length - 1;
+    };
+
+    this.previous = function () {
+      return this.elems[--this.index];
+    };
+
+    this.next = function () {
+      return this.elems[++this.index];
+    };
+
+    this.current = function () {
+      return this.elems[this.index];
+    };
+
+    this.hasElements = function () {
+      return this.elems.length > 0;
+    };
+
+    this.removeCurrent = function () {
+      var removed = this.current(),
+        toRemove = this.index;
+
+      !this.hasNext() && this.index--;
+      this.elems.remove(toRemove);
+      return removed;
+    };
+  }
+});
+\ No newline at end of file