Draggable: Stop erroneously overriding scroll offsets for root nodes. Fixes #6258 - Draggable: not following mouse when scrolled and using overflow-y: scroll.

1 files changed, 6 insertions, 7 deletions

diff --git a/ui/jquery.ui.draggable.js b/ui/jquery.ui.draggable.js
index 0c58aa4b8..4814cb851 100644
--- a/ui/jquery.ui.draggable.js
+++ b/ui/jquery.ui.draggable.js
@@ -440,7 +440,7 @@ $.widget("ui.draggable", $.ui.mouse, {
 		}
 
 		var mod = d === "absolute" ? 1 : -1,
-			scroll = this.cssPosition === "absolute" && !(this.scrollParent[0] !== document && $.contains(this.scrollParent[0], this.offsetParent[0])) ? this.offsetParent : this.scrollParent, scrollIsRootNode = (/(html|body)/i).test(scroll[0].tagName);
+			scroll = this.cssPosition === "absolute" && !( this.scrollParent[ 0 ] !== document && $.contains( this.scrollParent[ 0 ], this.offsetParent[ 0 ] ) ) ? this.offsetParent : this.scrollParent;
 
 		//Cache the scroll
 		if (!this.offset.scroll) {
@@ -452,13 +452,13 @@ $.widget("ui.draggable", $.ui.mouse, {
 				pos.top	+																// The absolute mouse position
 				this.offset.relative.top * mod +										// Only for relative positioned nodes: Relative offset from element to offset parent
 				this.offset.parent.top * mod -										// The offsetParent's offset without borders (offset + border)
-				( ( this.cssPosition === "fixed" ? -this.scrollParent.scrollTop() : ( scrollIsRootNode ? 0 : this.offset.scroll.top ) ) * mod)
+				( ( this.cssPosition === "fixed" ? -this.scrollParent.scrollTop() : this.offset.scroll.top ) * mod )
 			),
 			left: (
 				pos.left +																// The absolute mouse position
 				this.offset.relative.left * mod +										// Only for relative positioned nodes: Relative offset from element to offset parent
 				this.offset.parent.left * mod	-										// The offsetParent's offset without borders (offset + border)
-				( ( this.cssPosition === "fixed" ? -this.scrollParent.scrollLeft() : scrollIsRootNode ? 0 : this.offset.scroll.left ) * mod)
+				( ( this.cssPosition === "fixed" ? -this.scrollParent.scrollLeft() : this.offset.scroll.left ) * mod )
 			)
 		};
 
@@ -468,8 +468,7 @@ $.widget("ui.draggable", $.ui.mouse, {
 
 		var containment, co, top, left,
 			o = this.options,
-			scroll = this.cssPosition === "absolute" && !(this.scrollParent[0] !== document && $.contains(this.scrollParent[0], this.offsetParent[0])) ? this.offsetParent : this.scrollParent,
-			scrollIsRootNode = (/(html|body)/i).test(scroll[0].tagName),
+			scroll = this.cssPosition === "absolute" && !( this.scrollParent[ 0 ] !== document && $.contains( this.scrollParent[ 0 ], this.offsetParent[ 0 ] ) ) ? this.offsetParent : this.scrollParent,
 			pageX = event.pageX,
 			pageY = event.pageY;
 
@@ -530,14 +529,14 @@ $.widget("ui.draggable", $.ui.mouse, {
 				this.offset.click.top	-												// Click offset (relative to the element)
 				this.offset.relative.top -												// Only for relative positioned nodes: Relative offset from element to offset parent
 				this.offset.parent.top +												// The offsetParent's offset without borders (offset + border)
-				( ( this.cssPosition === "fixed" ? -this.scrollParent.scrollTop() : ( scrollIsRootNode ? 0 : this.offset.scroll.top ) ))
+				( this.cssPosition === "fixed" ? -this.scrollParent.scrollTop() : this.offset.scroll.top )
 			),
 			left: (
 				pageX -																	// The absolute mouse position
 				this.offset.click.left -												// Click offset (relative to the element)
 				this.offset.relative.left -												// Only for relative positioned nodes: Relative offset from element to offset parent
 				this.offset.parent.left +												// The offsetParent's offset without borders (offset + border)
-				( ( this.cssPosition === "fixed" ? -this.scrollParent.scrollLeft() : scrollIsRootNode ? 0 : this.offset.scroll.left ))
+				( this.cssPosition === "fixed" ? -this.scrollParent.scrollLeft() : this.offset.scroll.left )
 			)
 		};