A simplification of the last ui hovering improvement.

4chan_x.user.js

@@ -522,27 +522,23 @@
       return localStorage.setItem("" + g.NAMESPACE + this.id + ".position", this.style.cssText);
     };
     hoverstart = function(_arg) {
-      var asap, asapTest, cb, el, endEvents, event, initialEvent, o, root, _i, _len, _ref;
+      var asap, asapTest, cb, el, endEvents, event, latestEvent, o, root, _i, _len, _ref;
-      root = _arg.root, el = _arg.el, initialEvent = _arg.initialEvent, endEvents = _arg.endEvents, asapTest = _arg.asapTest, cb = _arg.cb;
+      root = _arg.root, el = _arg.el, latestEvent = _arg.latestEvent, endEvents = _arg.endEvents, asapTest = _arg.asapTest, cb = _arg.cb;
       o = {
         root: root,
         el: el,
         style: el.style,
         cb: cb,
         endEvents: endEvents.split(' '),
-        mousemove: function(e) {
+        latestEvent: latestEvent,
-          return initialEvent = e;
-        },
         clientHeight: doc.clientHeight,
         clientWidth: doc.clientWidth
       };
       o.hover = hover.bind(o);
       o.hoverend = hoverend.bind(o);
-      root.addEventListener('mousemove', o.mousemove, false);
       asap = function() {
         if (asapTest()) {
-          root.removeEventListener('mousemove', o.mousemove, false);
+          return o.hover(o.latestEvent);
-          return o.hover(initialEvent);
         } else {
           return o.timeout = setTimeout(asap, 25);
         }
@@ -557,6 +553,7 @@
     };
     hover = function(e) {
       var clientX, clientY, height, left, right, style, top;
+      this.latestEvent = e;
       height = this.el.offsetHeight;
       clientX = e.clientX, clientY = e.clientY;
       top = clientY - 120;
@@ -582,7 +579,6 @@
         this.root.removeEventListener(event, this.hoverend, false);
       }
       this.root.removeEventListener('mousemove', this.hover, false);
-      this.root.removeEventListener('mousemove', this.mousemove, false);
       clearTimeout(this.timeout);
       if (this.cb) {
         return this.cb.call(this);
@@ -2942,7 +2938,7 @@
       UI.hover({
         root: this,
         el: qp,
-        initialEvent: e,
+        latestEvent: e,
         endEvents: 'mouseout click',
         cb: QuotePreview.mouseout,
         asapTest: function() {
@@ -3758,7 +3754,7 @@
       UI.hover({
         root: this,
         el: el,
-        initialEvent: e,
+        latestEvent: e,
         endEvents: 'mouseout click',
         asapTest: function() {
           return el.naturalHeight;

lib/ui.coffee

@@ -286,26 +286,23 @@ UI = (->
       d.removeEventListener 'mouseup',   @up,   false
     localStorage.setItem "#{g.NAMESPACE}#{@id}.position", @style.cssText
 
-  hoverstart = ({root, el, initialEvent, endEvents, asapTest, cb}) ->
+  hoverstart = ({root, el, latestEvent, endEvents, asapTest, cb}) ->
     o = {
       root:   root
       el:     el
       style:  el.style
       cb:     cb
-      endEvents: endEvents.split ' '
+      endEvents:    endEvents.split ' '
-      mousemove: (e) -> initialEvent = e
+      latestEvent:  latestEvent
       clientHeight: doc.clientHeight
       clientWidth:  doc.clientWidth
     }
     o.hover    = hover.bind    o
     o.hoverend = hoverend.bind o
 
-    # Set position once content is loaded.
-    root.addEventListener 'mousemove', o.mousemove, false
     asap = ->
       if asapTest()
-        root.removeEventListener 'mousemove', o.mousemove, false
+        o.hover o.latestEvent
-        o.hover initialEvent
       else
         o.timeout = setTimeout asap, 25
     asap()
@@ -314,6 +311,7 @@ UI = (->
       root.addEventListener event,     o.hoverend, false
     root.addEventListener 'mousemove', o.hover,    false
   hover = (e) ->
+    @latestEvent = e
     height = @el.offsetHeight
     {clientX, clientY} = e
 
@@ -340,9 +338,8 @@ UI = (->
   hoverend = ->
     @el.parentNode.removeChild @el
     for event in @endEvents
-      @root.removeEventListener event,     @hoverend,  false
+      @root.removeEventListener event,     @hoverend, false
-    @root.removeEventListener 'mousemove', @hover,     false
+    @root.removeEventListener 'mousemove', @hover,    false
-    @root.removeEventListener 'mousemove', @mousemove, false
     clearTimeout @timeout
     @cb.call @ if @cb
 

src/features.coffee

@@ -1768,7 +1768,7 @@ QuotePreview =
     UI.hover
       root: @
       el: qp
-      initialEvent: e
+      latestEvent: e
       endEvents: 'mouseout click'
       cb: QuotePreview.mouseout
       asapTest: -> qp.firstElementChild
@@ -2313,7 +2313,7 @@ ImageHover =
     UI.hover
       root: @
       el: el
-      initialEvent: e
+      latestEvent: e
       endEvents: 'mouseout click'
       asapTest: -> el.naturalHeight
     $.on el, 'error', ImageHover.error