From d761609e54fbb0500cce983a35ea5956a8e093df Mon Sep 17 00:00:00 2001
From: zhudock <zrhudock@outlook.com>
Date: Tue, 28 Feb 2017 15:55:52 -0500
Subject: [PATCH] Add wrapdiff option for scrollToDiff next\prev to wrap to
 start\end of text. resolves #57

---
 lib/mergely.js | 13 +++++++++++--
 1 file changed, 11 insertions(+), 2 deletions(-)

diff --git a/lib/mergely.js b/lib/mergely.js
index 80447c4..0f48af3 100644
--- a/lib/mergely.js
+++ b/lib/mergely.js
@@ -395,6 +395,7 @@ jQuery.extend(Mgly.CodeMirrorDiffView.prototype, {
 			viewport: false,
 			ignorews: false,
 			ignorecase: false,
+			wrapdiff: false,
 			fadein: 'fast',
 			editor_width: '650px',
 			editor_height: '400px',
@@ -498,10 +499,18 @@ jQuery.extend(Mgly.CodeMirrorDiffView.prototype, {
 	scrollToDiff: function(direction) {
 		if (!this.changes.length) return;
 		if (direction == 'next') {
-			this._current_diff = Math.min(++this._current_diff, this.changes.length - 1);
+			if (this.settings.wrapdiff && this._current_diff == this.changes.length -1) {
+				this._current_diff = 0;
+			} else {
+				this._current_diff = Math.min(++this._current_diff, this.changes.length - 1);
+			}
 		}
 		else if (direction == 'prev') {
-			this._current_diff = Math.max(--this._current_diff, 0);
+			if (this.settings.wrapdiff && this._current_diff == 0) {
+				this._current_diff = this.changes.length - 1;
+			} else {
+				this._current_diff = Math.max(--this._current_diff, 0);
+			}
 		}
 		this._scroll_to_change(this.changes[this._current_diff]);
 		this._changed(this.id + '-lhs', this.id + '-rhs');