Moving forward with javascript refactoring for better dependency inje…

…ction, support of mouse whell for scrolling oe menu

src/main/webapp/scripts/jquery.mousewheel-3.1.13.js

@@ -0,0 +1,238 @@
+/*!
+ * jQuery Mousewheel 3.1.13
+ * Copyright OpenJS Foundation and other contributors
+ */
+
+( function( factory ) {
+    if ( typeof define === "function" && define.amd ) {
+
+        // AMD. Register as an anonymous module.
+        define( [ "jquery" ], factory );
+    } else if ( typeof exports === "object" ) {
+
+        // Node/CommonJS style for Browserify
+        module.exports = factory;
+    } else {
+
+        // Browser globals
+        factory( jQuery );
+    }
+} )( function( $ ) {
+
+    var toFix  = [ "wheel", "mousewheel", "DOMMouseScroll", "MozMousePixelScroll" ],
+        toBind = ( "onwheel" in window.document || window.document.documentMode >= 9 ) ?
+                    [ "wheel" ] : [ "mousewheel", "DomMouseScroll", "MozMousePixelScroll" ],
+        slice  = Array.prototype.slice,
+        nullLowestDeltaTimeout, lowestDelta;
+
+    if ( $.event.fixHooks ) {
+        for ( var i = toFix.length; i; ) {
+            $.event.fixHooks[ toFix[ --i ] ] = $.event.mouseHooks;
+        }
+    }
+
+    var special = $.event.special.mousewheel = {
+        version: "3.1.12",
+
+        setup: function() {
+            if ( this.addEventListener ) {
+                for ( var i = toBind.length; i; ) {
+                    this.addEventListener( toBind[ --i ], handler, false );
+                }
+            } else {
+                this.onmousewheel = handler;
+            }
+
+            // Store the line height and page height for this particular element
+            $.data( this, "mousewheel-line-height", special.getLineHeight( this ) );
+            $.data( this, "mousewheel-page-height", special.getPageHeight( this ) );
+        },
+
+        teardown: function() {
+            if ( this.removeEventListener ) {
+                for ( var i = toBind.length; i; ) {
+                    this.removeEventListener( toBind[ --i ], handler, false );
+                }
+            } else {
+                this.onmousewheel = null;
+            }
+
+            // Clean up the data we added to the element
+            $.removeData( this, "mousewheel-line-height" );
+            $.removeData( this, "mousewheel-page-height" );
+        },
+
+        getLineHeight: function( elem ) {
+            var $elem = $( elem ),
+                $parent = $elem[ "offsetParent" in $.fn ? "offsetParent" : "parent" ]();
+            if ( !$parent.length ) {
+                $parent = $( "body" );
+            }
+            return parseInt( $parent.css( "fontSize" ), 10 ) ||
+                parseInt( $elem.css( "fontSize" ), 10 ) || 16;
+        },
+
+        getPageHeight: function( elem ) {
+            return $( elem ).height();
+        },
+
+        settings: {
+            adjustOldDeltas: true, // see shouldAdjustOldDeltas() below
+            normalizeOffset: true  // calls getBoundingClientRect for each event
+        }
+    };
+
+    $.fn.extend( {
+        mousewheel: function( fn ) {
+            return fn ? this.on( "mousewheel", fn ) : this.trigger( "mousewheel" );
+        },
+
+        unmousewheel: function( fn ) {
+            return this.off( "mousewheel", fn );
+        }
+    } );
+
+
+    function handler( event ) {
+        var orgEvent   = event || window.event,
+            args       = slice.call( arguments, 1 ),
+            delta      = 0,
+            deltaX     = 0,
+            deltaY     = 0,
+            absDelta   = 0;
+        event = $.event.fix( orgEvent );
+        event.type = "mousewheel";
+
+        // Old school scrollwheel delta
+        if ( "detail" in orgEvent ) {
+            deltaY = orgEvent.detail * -1;
+        }
+        if ( "wheelDelta" in orgEvent ) {
+            deltaY = orgEvent.wheelDelta;
+        }
+        if ( "wheelDeltaY" in orgEvent ) {
+            deltaY = orgEvent.wheelDeltaY;
+        }
+        if ( "wheelDeltaX" in orgEvent ) {
+            deltaX = orgEvent.wheelDeltaX * -1;
+        }
+
+        // Firefox < 17 horizontal scrolling related to DOMMouseScroll event
+        if ( "axis" in orgEvent && orgEvent.axis === orgEvent.HORIZONTAL_AXIS ) {
+            deltaX = deltaY * -1;
+            deltaY = 0;
+        }
+
+        // Set delta to be deltaY or deltaX if deltaY is 0 for backwards compatabilitiy
+        delta = deltaY === 0 ? deltaX : deltaY;
+
+        // New school wheel delta (wheel event)
+        if ( "deltaY" in orgEvent ) {
+            deltaY = orgEvent.deltaY * -1;
+            delta  = deltaY;
+        }
+        if ( "deltaX" in orgEvent ) {
+            deltaX = orgEvent.deltaX;
+            if ( deltaY === 0 ) {
+                delta  = deltaX * -1;
+            }
+        }
+
+        // No change actually happened, no reason to go any further
+        if ( deltaY === 0 && deltaX === 0 ) {
+            return;
+        }
+
+        // Need to convert lines and pages to pixels if we aren't already in pixels
+        // There are three delta modes:
+        //   * deltaMode 0 is by pixels, nothing to do
+        //   * deltaMode 1 is by lines
+        //   * deltaMode 2 is by pages
+        if ( orgEvent.deltaMode === 1 ) {
+            var lineHeight = $.data( this, "mousewheel-line-height" );
+            delta  *= lineHeight;
+            deltaY *= lineHeight;
+            deltaX *= lineHeight;
+        } else if ( orgEvent.deltaMode === 2 ) {
+            var pageHeight = $.data( this, "mousewheel-page-height" );
+            delta  *= pageHeight;
+            deltaY *= pageHeight;
+            deltaX *= pageHeight;
+        }
+
+        // Store lowest absolute delta to normalize the delta values
+        absDelta = Math.max( Math.abs( deltaY ), Math.abs( deltaX ) );
+
+        if ( !lowestDelta || absDelta < lowestDelta ) {
+            lowestDelta = absDelta;
+
+            // Adjust older deltas if necessary
+            if ( shouldAdjustOldDeltas( orgEvent, absDelta ) ) {
+                lowestDelta /= 40;
+            }
+        }
+
+        // Adjust older deltas if necessary
+        if ( shouldAdjustOldDeltas( orgEvent, absDelta ) ) {
+
+            // Divide all the things by 40!
+            delta  /= 40;
+            deltaX /= 40;
+            deltaY /= 40;
+        }
+
+        // Get a whole, normalized value for the deltas
+        delta  = Math[ delta  >= 1 ? "floor" : "ceil" ]( delta  / lowestDelta );
+        deltaX = Math[ deltaX >= 1 ? "floor" : "ceil" ]( deltaX / lowestDelta );
+        deltaY = Math[ deltaY >= 1 ? "floor" : "ceil" ]( deltaY / lowestDelta );
+
+        // Normalise offsetX and offsetY properties
+        if ( special.settings.normalizeOffset && this.getBoundingClientRect ) {
+            var boundingRect = this.getBoundingClientRect();
+            event.offsetX = event.clientX - boundingRect.left;
+            event.offsetY = event.clientY - boundingRect.top;
+        }
+
+        // Add information to the event object
+        event.deltaX = deltaX;
+        event.deltaY = deltaY;
+        event.deltaFactor = lowestDelta;
+
+        // Go ahead and set deltaMode to 0 since we converted to pixels
+        // Although this is a little odd since we overwrite the deltaX/Y
+        // properties with normalized deltas.
+        event.deltaMode = 0;
+
+        // Add event and delta to the front of the arguments
+        args.unshift( event, delta, deltaX, deltaY );
+
+        // Clearout lowestDelta after sometime to better
+        // handle multiple device types that give different
+        // a different lowestDelta
+        // Ex: trackpad = 3 and mouse wheel = 120
+        if ( nullLowestDeltaTimeout ) {
+            window.clearTimeout( nullLowestDeltaTimeout );
+        }
+        nullLowestDeltaTimeout = window.setTimeout( nullLowestDelta, 200 );
+
+        return ( $.event.dispatch || $.event.handle ).apply( this, args );
+    }
+
+    function nullLowestDelta() {
+        lowestDelta = null;
+    }
+
+    function shouldAdjustOldDeltas( orgEvent, absDelta ) {
+
+        // If this is an older event and the delta is divisable by 120,
+        // then we are assuming that the browser is treating this as an
+        // older mouse wheel event and that we should divide the deltas
+        // by 40 to try and get a more usable deltaFactor.
+        // Side note, this actually impacts the reported scroll distance
+        // in older browsers and can cause scrolling to be slower than native.
+        // Turn this off by setting $.event.special.mousewheel.settings.adjustOldDeltas to false.
+        return special.settings.adjustOldDeltas && orgEvent.type === "mousewheel" &&
+            absDelta % 120 === 0;
+    }
+
+} );