Listen for mouseleave events and fire a plothover event with empty item when it occurs

git-svn-id: https://flot.googlecode.com/svn/trunk@281 1e0a6537-2640-0410-bfb7-f154510ff394

NEWS.txt

@@ -103,11 +103,14 @@ Bug fixes:
 - Fix errors in JSON in examples so they work with jQuery 1.4.2
   (fix reported by honestbleeps, issue 357).
 - Fix bug with tooltip in interacting.html, this makes the tooltip
-  much smoother (fix by bdkahn).
+  much smoother (fix by bdkahn). Fix related bug inside highlighting
+  handler in Flot.
 - Use closure trick to make inline colorhelpers plugin respect
   jQuery.noConflict(true), renaming the global jQuery object (reported
   by Nick Stielau).
-
+- Listen for mouseleave events and fire a plothover event with empty
+  item when it occurs to drop highlights when the mouse leaves the
+  plot (reported by by outspirit).
 
 Flot 0.6
 --------

jquery.flot.js

@@ -740,8 +740,10 @@
             eventHolder = $([overlay, canvas]);
 
             // bind events
-            if (options.grid.hoverable)
+            if (options.grid.hoverable) {
                 eventHolder.mousemove(onMouseMove);
+                eventHolder.mouseleave(onMouseLeave);
+            }
 
             if (options.grid.clickable)
                 eventHolder.click(onClick);
@@ -2271,6 +2273,12 @@
                                        function (s) { return s["hoverable"] != false; });
         }
 
+        function onMouseLeave(e) {
+            if (options.grid.hoverable)
+                triggerClickHoverEvent("plothover", e,
+                                       function (s) { return false; });
+        }
+
         function onClick(e) {
             triggerClickHoverEvent("plotclick", e,
                                    function (s) { return s["clickable"] != false; });