diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/jqLite.js | 48 |
1 files changed, 34 insertions, 14 deletions
diff --git a/src/jqLite.js b/src/jqLite.js index cf63c5df..0abae3d7 100644 --- a/src/jqLite.js +++ b/src/jqLite.js @@ -607,23 +607,43 @@ forEach({ if (!eventFns) { if (type == 'mouseenter' || type == 'mouseleave') { - var counter = 0; + var contains = document.body.contains || document.body.compareDocumentPosition ? + function( a, b ) { + var adown = a.nodeType === 9 ? a.documentElement : a, + bup = b && b.parentNode; + return a === bup || !!( bup && bup.nodeType === 1 && ( + adown.contains ? + adown.contains( bup ) : + a.compareDocumentPosition && a.compareDocumentPosition( bup ) & 16 + )); + } : + function( a, b ) { + if ( b ) { + while ( (b = b.parentNode) ) { + if ( b === a ) { + return true; + } + } + } + return false; + }; - events.mouseenter = []; - events.mouseleave = []; + events[type] = []; + + // Refer to jQuery's implementation of mouseenter & mouseleave + // Read about mouseenter and mouseleave: + // http://www.quirksmode.org/js/events_mouse.html#link8 + var eventmap = { mouseleave : "mouseout", mouseenter : "mouseover"} + bindFn(element, eventmap[type], function(event) { + var ret, target = this, related = event.relatedTarget; + // For mousenter/leave call the handler if related is outside the target. + // NB: No relatedTarget if the mouse left/entered the browser window + if ( !related || (related !== target && !contains(target, related)) ){ + handle(event, type); + } - bindFn(element, 'mouseover', function(event) { - counter++; - if (counter == 1) { - handle(event, 'mouseenter'); - } - }); - bindFn(element, 'mouseout', function(event) { - counter --; - if (counter == 0) { - handle(event, 'mouseleave'); - } }); + } else { addEventListenerFn(element, type, handle); events[type] = []; |