1 files changed, 34 insertions, 0 deletions
diff --git a/app/assets/javascripts/new_commit_form.js b/app/assets/javascripts/new_commit_form.js
new file mode 100644
index 00000000000..21bf8867f7b
--- /dev/null
+++ b/app/assets/javascripts/new_commit_form.js
@@ -0,0 +1,34 @@
+(function() {
+  var bind = function(fn, me){ return function(){ return fn.apply(me, arguments); }; };
+
+  this.NewCommitForm = (function() {
+    function NewCommitForm(form) {
+      this.renderDestination = bind(this.renderDestination, this);
+      this.newBranch = form.find('.js-target-branch');
+      this.originalBranch = form.find('.js-original-branch');
+      this.createMergeRequest = form.find('.js-create-merge-request');
+      this.createMergeRequestContainer = form.find('.js-create-merge-request-container');
+      this.renderDestination();
+      this.newBranch.keyup(this.renderDestination);
+    }
+
+    NewCommitForm.prototype.renderDestination = function() {
+      var different;
+      different = this.newBranch.val() !== this.originalBranch.val();
+      if (different) {
+        this.createMergeRequestContainer.show();
+        if (!this.wasDifferent) {
+          this.createMergeRequest.prop('checked', true);
+        }
+      } else {
+        this.createMergeRequestContainer.hide();
+        this.createMergeRequest.prop('checked', false);
+      }
+      return this.wasDifferent = different;
+    };
+
+    return NewCommitForm;
+
+  })();
+
+}).call(this);