From 288064c5395591cb442555695cd8ceb9eb6b907f Mon Sep 17 00:00:00 2001
From: Phil Hughes <me@iamphill.com>
Date: Sun, 15 Jan 2017 11:47:53 -0500
Subject: Removed jQuery UI draggable

---
 app/assets/javascripts/application.js       |  2 -
 app/assets/javascripts/commit/image_file.js | 81 +++++++++++++++++++++--------
 2 files changed, 58 insertions(+), 25 deletions(-)

diff --git a/app/assets/javascripts/application.js b/app/assets/javascripts/application.js
index 53d8d313e39..c51860d1604 100644
--- a/app/assets/javascripts/application.js
+++ b/app/assets/javascripts/application.js
@@ -7,8 +7,6 @@
 /* global Aside */
 
 window.$ = window.jQuery = require('jquery');
-require('jquery-ui/ui/draggable');
-require('jquery-ui/ui/sortable');
 require('jquery-ujs');
 require('vendor/jquery.endless-scroll');
 require('vendor/jquery.highlight');
diff --git a/app/assets/javascripts/commit/image_file.js b/app/assets/javascripts/commit/image_file.js
index 49bb64a3472..17d14dc1e79 100644
--- a/app/assets/javascripts/commit/image_file.js
+++ b/app/assets/javascripts/commit/image_file.js
@@ -52,6 +52,30 @@
       return this.views[viewMode].call(this);
     };
 
+    ImageFile.prototype.initDraggable = function($el, padding, callback) {
+      var dragging = false;
+      var $body = $('body');
+      var $offsetEl = $el.parent();
+
+      $el.off('mousedown').on('mousedown', function() {
+        dragging = true;
+        $body.css('user-select', 'none');
+      });
+
+      $body.off('mouseup').off('mousemove').on('mouseup', function() {
+        dragging = false;
+        $body.css('user-select', '');
+      })
+      .on('mousemove', function(e) {
+        var left;
+        if (!dragging) return;
+
+        left = e.pageX - ($offsetEl.offset().left + padding);
+
+        callback(e, left);
+      });
+    };
+
     prepareFrames = function(view) {
       var maxHeight, maxWidth;
       maxWidth = 0;
@@ -96,26 +120,30 @@
         maxHeight = 0;
         return $('.swipe.view', this.file).each((function(_this) {
           return function(index, view) {
-            var ref;
+            var $swipeWrap, $swipeBar, $swipeFrame, wrapPadding, ref;
             ref = prepareFrames(view), maxWidth = ref[0], maxHeight = ref[1];
-            $('.swipe-frame', view).css({
+            $swipeFrame = $('.swipe-frame', view);
+            $swipeWrap = $('.swipe-wrap', view);
+            $swipeBar = $('.swipe-bar', view);
+
+            $swipeFrame.css({
               width: maxWidth + 16,
               height: maxHeight + 28
             });
-            $('.swipe-wrap', view).css({
+            $swipeWrap.css({
               width: maxWidth + 1,
               height: maxHeight + 2
             });
-            return $('.swipe-bar', view).css({
+            $swipeBar.css({
               left: 0
-            }).draggable({
-              axis: 'x',
-              containment: 'parent',
-              drag: function(event) {
-                return $('.swipe-wrap', view).width((maxWidth + 1) - $(this).position().left);
-              },
-              stop: function(event) {
-                return $('.swipe-wrap', view).width((maxWidth + 1) - $(this).position().left);
+            });
+
+            wrapPadding = parseInt($swipeWrap.css('right').replace('px', ''), 10);
+
+            _this.initDraggable($swipeBar, wrapPadding, function(e, left) {
+              if (left > 0 && left < $swipeFrame.width() - (wrapPadding * 2)) {
+                $swipeWrap.width((maxWidth + 1) - left);
+                $swipeBar.css('left', left);
               }
             });
           };
@@ -128,9 +156,14 @@
         dragTrackWidth = $('.drag-track', this.file).width() - $('.dragger', this.file).width();
         return $('.onion-skin.view', this.file).each((function(_this) {
           return function(index, view) {
-            var ref;
+            var $frame, $track, $dragger, $frameAdded, framePadding, ref, dragging = false;
             ref = prepareFrames(view), maxWidth = ref[0], maxHeight = ref[1];
-            $('.onion-skin-frame', view).css({
+            $frame = $('.onion-skin-frame', view);
+            $frameAdded = $('.frame.added', view);
+            $track = $('.drag-track', view);
+            $dragger = $('.dragger', $track);
+
+            $frame.css({
               width: maxWidth + 16,
               height: maxHeight + 28
             });
@@ -138,16 +171,18 @@
               width: maxWidth + 1,
               height: maxHeight + 2
             });
-            return $('.dragger', view).css({
+            $dragger.css({
               left: dragTrackWidth
-            }).draggable({
-              axis: 'x',
-              containment: 'parent',
-              drag: function(event) {
-                return $('.frame.added', view).css('opacity', $(this).position().left / dragTrackWidth);
-              },
-              stop: function(event) {
-                return $('.frame.added', view).css('opacity', $(this).position().left / dragTrackWidth);
+            });
+
+            framePadding = parseInt($frameAdded.css('right').replace('px', ''), 10);
+
+            _this.initDraggable($dragger, framePadding, function(e, left) {
+              var opacity = left / dragTrackWidth;
+
+              if (opacity >= 0 && opacity <= 1) {
+                $dragger.css('left', left);
+                $frameAdded.css('opacity', opacity);
               }
             });
           };
-- 
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