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msd2/tracking/piwik/libs/bower_components/jScrollPane/script/mwheelIntent.js

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+/**
+ * @author trixta
+ * @version 1.2
+ */
+(function($){
+
+var mwheelI = {
+			pos: [-260, -260]
+		},
+	minDif 	= 3,
+	doc 	= document,
+	root 	= doc.documentElement,
+	body 	= doc.body,
+	longDelay, shortDelay
+;
+
+function unsetPos(){
+	if(this === mwheelI.elem){
+		mwheelI.pos = [-260, -260];
+		mwheelI.elem = false;
+		minDif = 3;
+	}
+}
+
+$.event.special.mwheelIntent = {
+	setup: function(){
+		var jElm = $(this).bind('mousewheel', $.event.special.mwheelIntent.handler);
+		if( this !== doc && this !== root && this !== body ){
+			jElm.bind('mouseleave', unsetPos);
+		}
+		jElm = null;
+        return true;
+    },
+	teardown: function(){
+        $(this)
+			.unbind('mousewheel', $.event.special.mwheelIntent.handler)
+			.unbind('mouseleave', unsetPos)
+		;
+        return true;
+    },
+    handler: function(e, d){
+		var pos = [e.clientX, e.clientY];
+		if( this === mwheelI.elem || Math.abs(mwheelI.pos[0] - pos[0]) > minDif || Math.abs(mwheelI.pos[1] - pos[1]) > minDif ){
+            mwheelI.elem = this;
+			mwheelI.pos = pos;
+			minDif = 250;
+			
+			clearTimeout(shortDelay);
+			shortDelay = setTimeout(function(){
+				minDif = 10;
+			}, 200);
+			clearTimeout(longDelay);
+			longDelay = setTimeout(function(){
+				minDif = 3;
+			}, 1500);
+			e = $.extend({}, e, {type: 'mwheelIntent'});
+            return ($.event.dispatch || $.event.handle).apply(this, arguments);
+		}
+    }
+};
+$.fn.extend({
+	mwheelIntent: function(fn) {
+		return fn ? this.bind("mwheelIntent", fn) : this.trigger("mwheelIntent");
+	},
+	
+	unmwheelIntent: function(fn) {
+		return this.unbind("mwheelIntent", fn);
+	}
+});
+
+$(function(){
+	body = doc.body;
+	//assume that document is always scrollable, doesn't hurt if not
+	$(doc).bind('mwheelIntent.mwheelIntentDefault', $.noop);
+});
+})(jQuery);