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Edit File: jquery.touch.js

/*
* jQuery Mobile v1.5.0-pre
* http://jquerymobile.com
*
* Copyright jQuery Foundation, Inc. and other contributors
* Released under the MIT license.
* http://jquery.org/license
*
*/

//>>label: Virtual Mouse (vmouse) Bindings
//>>group: Core
//>>description: Normalizes touch/mouse events.
//>>docs: http://api.jquerymobile.com/?s=vmouse

// This plugin is an experiment for abstracting away the touch and mouse
// events so that developers don't have to worry about which method of input
// the device their document is loaded on supports.
//
// The idea here is to allow the developer to register listeners for the
// basic mouse events, such as mousedown, mousemove, mouseup, and click,
// and the plugin will take care of registering the correct listeners
// behind the scenes to invoke the listener at the fastest possible time
// for that device, while still retaining the order of event firing in
// the traditional mouse environment, should multiple handlers be registered
// on the same element for different events.
//
// The current version exposes the following virtual events to jQuery bind methods:
// "vmouseover vmousedown vmousemove vmouseup vclick vmouseout vmousecancel"

( function( factory ) {
        if ( typeof define === "function" && define.amd ) {

// AMD. Register as an anonymous module.
            define( 'vmouse',[ "jquery" ], factory );
        } else {

// Browser globals
            factory( jQuery );
        }
    } )( function( $ ) {

var dataPropertyName = "virtualMouseBindings",
            touchTargetPropertyName = "virtualTouchID",
            touchEventProps = "clientX clientY pageX pageY screenX screenY".split( " " ),
            virtualEventNames = "vmouseover vmousedown vmousemove vmouseup vclick vmouseout vmousecancel".split( " " ),
            generalProps = ( "altKey bubbles cancelable ctrlKey currentTarget detail eventPhase " +
                "metaKey relatedTarget shiftKey target timeStamp view which" ).split( " " ),
            mouseHookProps = $.event.mouseHooks ? $.event.mouseHooks.props : [],
            mouseEventProps = generalProps.concat( mouseHookProps ),
            activeDocHandlers = {},
            resetTimerID = 0,
            startX = 0,
            startY = 0,
            didScroll = false,
            clickBlockList = [],
            blockMouseTriggers = false,
            blockTouchTriggers = false,
            eventCaptureSupported = "addEventListener" in document,
            $document = $( document ),
            nextTouchID = 1,
            lastTouchID = 0, threshold,
            i;

$.vmouse = {
            moveDistanceThreshold: 10,
            clickDistanceThreshold: 10,
            resetTimerDuration: 1500,
            maximumTimeBetweenTouches: 100
        };

function getNativeEvent( event ) {

while ( event && typeof event.originalEvent !== "undefined" ) {
                event = event.originalEvent;
            }
            return event;
        }

function createVirtualEvent( event, eventType ) {

var t = event.type,
                oe, props, ne, prop, ct, touch, i, j, len;

event = $.Event( event );
            event.type = eventType;

oe = event.originalEvent;
            props = generalProps;

// addresses separation of $.event.props in to $.event.mouseHook.props and Issue 3280
            // https://github.com/jquery/jquery-mobile/issues/3280
            if ( t.search( /^(mouse|click)/ ) > -1 ) {
                props = mouseEventProps;
            }

// copy original event properties over to the new event
            // this would happen if we could call $.event.fix instead of $.Event
            // but we don't have a way to force an event to be fixed multiple times
            if ( oe ) {
                for ( i = props.length; i; ) {
                    prop = props[ --i ];
                    event[ prop ] = oe[ prop ];
                }
            }

// make sure that if the mouse and click virtual events are generated
            // without a .which one is defined
            if ( t.search( /mouse(down|up)|click/ ) > -1 && !event.which ) {
                event.which = 1;
            }

if ( t.search( /^touch/ ) !== -1 ) {
                ne = getNativeEvent( oe );
                t = ne.touches;
                ct = ne.changedTouches;
                touch = ( t && t.length ) ? t[ 0 ] : ( ( ct && ct.length ) ? ct[ 0 ] : undefined );

if ( touch ) {
                    for ( j = 0, len = touchEventProps.length; j < len; j++ ) {
                        prop = touchEventProps[ j ];
                        event[ prop ] = touch[ prop ];
                    }
                }
            }

return event;
        }

function getVirtualBindingFlags( element ) {

var flags = {},
                b, k;

while ( element ) {

b = $.data( element, dataPropertyName );

for ( k in b ) {
                    if ( b[ k ] ) {
                        flags[ k ] = flags.hasVirtualBinding = true;
                    }
                }
                element = element.parentNode;
            }
            return flags;
        }

function getClosestElementWithVirtualBinding( element, eventType ) {
            var b;
            while ( element ) {

b = $.data( element, dataPropertyName );

if ( b && ( !eventType || b[ eventType ] ) ) {
                    return element;
                }
                element = element.parentNode;
            }
            return null;
        }

function enableTouchBindings() {
            blockTouchTriggers = false;
        }

function disableTouchBindings() {
            blockTouchTriggers = true;
        }

function enableMouseBindings() {
            lastTouchID = 0;
            clickBlockList.length = 0;
            blockMouseTriggers = false;

// When mouse bindings are enabled, our
            // touch bindings are disabled.
            disableTouchBindings();
        }

function disableMouseBindings() {
            // When mouse bindings are disabled, our
            // touch bindings are enabled.
            enableTouchBindings();
        }

function clearResetTimer() {
            if ( resetTimerID ) {
                clearTimeout( resetTimerID );
                resetTimerID = 0;
            }
        }

function startResetTimer() {
            clearResetTimer();
            resetTimerID = setTimeout( function() {
                resetTimerID = 0;
                enableMouseBindings();
            }, $.vmouse.resetTimerDuration );
        }

function triggerVirtualEvent( eventType, event, flags ) {
            var ve;

if ( ( flags && flags[ eventType ] ) ||
                ( !flags && getClosestElementWithVirtualBinding( event.target, eventType ) ) ) {

ve = createVirtualEvent( event, eventType );

$( event.target ).trigger( ve );
            }

return ve;
        }

function mouseEventCallback( event ) {
            var touchID = $.data( event.target, touchTargetPropertyName ),
                ve;

// It is unexpected if a click event is received before a touchend
            // or touchmove event, however this is a known behavior in Mobile
            // Safari when Mobile VoiceOver (as of iOS 8) is enabled and the user
            // double taps to activate a link element. In these cases if a touch
            // event is not received within the maximum time between touches,
            // re-enable mouse bindings and call the mouse event handler again.
            if ( event.type === "click" && $.data( event.target, "lastTouchType" ) === "touchstart" ) {
                setTimeout( function() {
                    if ( $.data( event.target, "lastTouchType" ) === "touchstart" ) {
                        enableMouseBindings();
                        delete $.data( event.target ).lastTouchType;
                        mouseEventCallback( event );
                    }
                }, $.vmouse.maximumTimeBetweenTouches );
            }

if ( !blockMouseTriggers && ( !lastTouchID || lastTouchID !== touchID ) ) {
                ve = triggerVirtualEvent( "v" + event.type, event );
                if ( ve ) {
                    if ( ve.isDefaultPrevented() ) {
                        event.preventDefault();
                    }
                    if ( ve.isPropagationStopped() ) {
                        event.stopPropagation();
                    }
                    if ( ve.isImmediatePropagationStopped() ) {
                        event.stopImmediatePropagation();
                    }
                }
            }
        }

function handleTouchStart( event ) {

var touches = getNativeEvent( event ).touches,
                target, flags, t;

if ( touches && touches.length === 1 ) {

target = event.target;
                flags = getVirtualBindingFlags( target );

$.data( event.target, "lastTouchType", event.type );

if ( flags.hasVirtualBinding ) {

lastTouchID = nextTouchID++;
                    $.data( target, touchTargetPropertyName, lastTouchID );

clearResetTimer();

disableMouseBindings();
                    didScroll = false;

t = getNativeEvent( event ).touches[ 0 ];
                    startX = t.pageX;
                    startY = t.pageY;

triggerVirtualEvent( "vmouseover", event, flags );
                    triggerVirtualEvent( "vmousedown", event, flags );
                }
            }
        }

function handleScroll( event ) {
            if ( blockTouchTriggers ) {
                return;
            }

if ( !didScroll ) {
                triggerVirtualEvent( "vmousecancel", event, getVirtualBindingFlags( event.target ) );
            }

$.data( event.target, "lastTouchType", event.type );

didScroll = true;
            startResetTimer();
        }

function handleTouchMove( event ) {
            if ( blockTouchTriggers ) {
                return;
            }

var t = getNativeEvent( event ).touches[ 0 ],
                didCancel = didScroll,
                moveThreshold = $.vmouse.moveDistanceThreshold,
                flags = getVirtualBindingFlags( event.target );

$.data( event.target, "lastTouchType", event.type );

didScroll = didScroll ||
                ( Math.abs( t.pageX - startX ) > moveThreshold ||
                    Math.abs( t.pageY - startY ) > moveThreshold );

if ( didScroll && !didCancel ) {
                triggerVirtualEvent( "vmousecancel", event, flags );
            }

triggerVirtualEvent( "vmousemove", event, flags );
            startResetTimer();
        }

function handleTouchEnd( event ) {
            if ( blockTouchTriggers || $.data( event.target, "lastTouchType" ) === undefined ) {
                return;
            }

disableTouchBindings();
            delete $.data( event.target ).lastTouchType;

var flags = getVirtualBindingFlags( event.target ),
                ve, t;
            triggerVirtualEvent( "vmouseup", event, flags );

if ( !didScroll ) {
                ve = triggerVirtualEvent( "vclick", event, flags );
                if ( ve && ve.isDefaultPrevented() ) {
                    // The target of the mouse events that follow the touchend
                    // event don't necessarily match the target used during the
                    // touch. This means we need to rely on coordinates for blocking
                    // any click that is generated.
                    t = getNativeEvent( event ).changedTouches[ 0 ];
                    clickBlockList.push( {
                        touchID: lastTouchID,
                        x: t.clientX,
                        y: t.clientY
                    } );

// Prevent any mouse events that follow from triggering
                    // virtual event notifications.
                    blockMouseTriggers = true;
                }
            }
            triggerVirtualEvent( "vmouseout", event, flags );
            didScroll = false;

startResetTimer();
        }

function hasVirtualBindings( ele ) {
            var bindings = $.data( ele, dataPropertyName ),
                k;

if ( bindings ) {
                for ( k in bindings ) {
                    if ( bindings[ k ] ) {
                        return true;
                    }
                }
            }
            return false;
        }

function dummyMouseHandler() {
        }

function getSpecialEventObject( eventType ) {
            var realType = eventType.substr( 1 );

return {
                setup: function( /* data, namespace */ ) {
                    // If this is the first virtual mouse binding for this element,
                    // add a bindings object to its data.

if ( !hasVirtualBindings( this ) ) {
                        $.data( this, dataPropertyName, {} );
                    }

// If setup is called, we know it is the first binding for this
                    // eventType, so initialize the count for the eventType to zero.
                    var bindings = $.data( this, dataPropertyName );
                    bindings[ eventType ] = true;

// If this is the first virtual mouse event for this type,
                    // register a global handler on the document.

activeDocHandlers[ eventType ] = ( activeDocHandlers[ eventType ] || 0 ) + 1;

if ( activeDocHandlers[ eventType ] === 1 ) {
                        $document.bind( realType, mouseEventCallback );
                    }

// Some browsers, like Opera Mini, won't dispatch mouse/click events
                    // for elements unless they actually have handlers registered on them.
                    // To get around this, we register dummy handlers on the elements.

$( this ).bind( realType, dummyMouseHandler );

// For now, if event capture is not supported, we rely on mouse handlers.
                    if ( eventCaptureSupported ) {
                        // If this is the first virtual mouse binding for the document,
                        // register our touchstart handler on the document.

activeDocHandlers[ "touchstart" ] = ( activeDocHandlers[ "touchstart" ] || 0 ) + 1;

if ( activeDocHandlers[ "touchstart" ] === 1 ) {
                            $document.bind( "touchstart", handleTouchStart )
                                .bind( "touchend", handleTouchEnd )

// On touch platforms, touching the screen and then dragging your finger
                                // causes the window content to scroll after some distance threshold is
                                // exceeded. On these platforms, a scroll prevents a click event from being
                                // dispatched, and on some platforms, even the touchend is suppressed. To
                                // mimic the suppression of the click event, we need to watch for a scroll
                                // event. Unfortunately, some platforms like iOS don't dispatch scroll
                                // events until *AFTER* the user lifts their finger (touchend). This means
                                // we need to watch both scroll and touchmove events to figure out whether
                                // or not a scroll happenens before the touchend event is fired.

.bind( "touchmove", handleTouchMove )
                                .bind( "scroll", handleScroll );
                        }
                    }
                },

teardown: function( /* data, namespace */ ) {
                    // If this is the last virtual binding for this eventType,
                    // remove its global handler from the document.

--activeDocHandlers[eventType];

if ( !activeDocHandlers[ eventType ] ) {
                        $document.unbind( realType, mouseEventCallback );
                    }

if ( eventCaptureSupported ) {
                        // If this is the last virtual mouse binding in existence,
                        // remove our document touchstart listener.

--activeDocHandlers["touchstart"];

if ( !activeDocHandlers[ "touchstart" ] ) {
                            $document.unbind( "touchstart", handleTouchStart )
                                .unbind( "touchmove", handleTouchMove )
                                .unbind( "touchend", handleTouchEnd )
                                .unbind( "scroll", handleScroll );
                        }
                    }

var $this = $( this ),
                        bindings = $.data( this, dataPropertyName );

// teardown may be called when an element was
                    // removed from the DOM. If this is the case,
                    // jQuery core may have already stripped the element
                    // of any data bindings so we need to check it before
                    // using it.
                    if ( bindings ) {
                        bindings[ eventType ] = false;
                    }

// Unregister the dummy event handler.

$this.unbind( realType, dummyMouseHandler );

// If this is the last virtual mouse binding on the
                    // element, remove the binding data from the element.

if ( !hasVirtualBindings( this ) ) {
                        $this.removeData( dataPropertyName );
                    }
                }
            };
        }

// Expose our custom events to the jQuery bind/unbind mechanism.

for ( i = 0; i < virtualEventNames.length; i++ ) {
            $.event.special[ virtualEventNames[ i ] ] = getSpecialEventObject( virtualEventNames[ i ] );
        }

// Add a capture click handler to block clicks.
// Note that we require event capture support for this so if the device
// doesn't support it, we punt for now and rely solely on mouse events.
        if ( eventCaptureSupported ) {
            document.addEventListener( "click", function( e ) {
                var cnt = clickBlockList.length,
                    target = e.target,
                    x, y, ele, i, o, touchID;

if ( cnt ) {
                    x = e.clientX;
                    y = e.clientY;
                    threshold = $.vmouse.clickDistanceThreshold;

// The idea here is to run through the clickBlockList to see if
                    // the current click event is in the proximity of one of our
                    // vclick events that had preventDefault() called on it. If we find
                    // one, then we block the click.
                    //
                    // Why do we have to rely on proximity?
                    //
                    // Because the target of the touch event that triggered the vclick
                    // can be different from the target of the click event synthesized
                    // by the browser. The target of a mouse/click event that is synthesized
                    // from a touch event seems to be implementation specific. For example,
                    // some browsers will fire mouse/click events for a link that is near
                    // a touch event, even though the target of the touchstart/touchend event
                    // says the user touched outside the link. Also, it seems that with most
                    // browsers, the target of the mouse/click event is not calculated until the
                    // time it is dispatched, so if you replace an element that you touched
                    // with another element, the target of the mouse/click will be the new
                    // element underneath that point.
                    //
                    // Aside from proximity, we also check to see if the target and any
                    // of its ancestors were the ones that blocked a click. This is necessary
                    // because of the strange mouse/click target calculation done in the
                    // Android 2.1 browser, where if you click on an element, and there is a
                    // mouse/click handler on one of its ancestors, the target will be the
                    // innermost child of the touched element, even if that child is no where
                    // near the point of touch.

ele = target;

while ( ele ) {
                        for ( i = 0; i < cnt; i++ ) {
                            o = clickBlockList[ i ];
                            touchID = 0;

if ( ( ele === target && Math.abs( o.x - x ) < threshold && Math.abs( o.y - y ) < threshold ) ||
                                $.data( ele, touchTargetPropertyName ) === o.touchID ) {
                                // XXX: We may want to consider removing matches from the block list
                                //      instead of waiting for the reset timer to fire.
                                e.preventDefault();
                                e.stopPropagation();
                                return;
                            }
                        }
                        ele = ele.parentNode;
                    }
                }
            }, true );
        }
    } );

/*!
     * jQuery Mobile Namespace @VERSION
     * http://jquerymobile.com
     *
     * Copyright jQuery Foundation and other contributors
     * Released under the MIT license.
     * http://jquery.org/license
     */

//>>label: Namespace
//>>group: Core
//>>description: The mobile namespace on the jQuery object

( function( factory ) {
        if ( typeof define === "function" && define.amd ) {

// AMD. Register as an anonymous module.
            define( 'ns',[ "jquery" ], factory );
        } else {

// Browser globals
            factory( jQuery );
        }
    } )( function( $ ) {

$.mobile = { version: "@VERSION" };

return $.mobile;
    } );

/*!
     * jQuery Mobile Touch Support Test @VERSION
     * http://jquerymobile.com
     *
     * Copyright jQuery Foundation and other contributors
     * Released under the MIT license.
     * http://jquery.org/license
     */

//>>label: Touch support test
//>>group: Core
//>>description: Touch feature test

( function( factory ) {
        if ( typeof define === "function" && define.amd ) {

// AMD. Register as an anonymous module.
            define( 'support/touch',[
                "jquery",
                "../ns" ], factory );
        } else {

// Browser globals
            factory( jQuery );
        }
    } )( function( $ ) {

var support = {
            touch: "ontouchend" in document
        };

$.mobile.support = $.mobile.support || {};
        $.extend( $.support, support );
        $.extend( $.mobile.support, support );

return $.support;
    } );

/*!
     * jQuery Mobile Touch Events @VERSION
     * http://jquerymobile.com
     *
     * Copyright jQuery Foundation and other contributors
     * Released under the MIT license.
     * http://jquery.org/license
     */

//>>label: Touch
//>>group: Events
//>>description: Touch events including: touchstart, touchmove, touchend, tap, taphold, swipe, swipeleft, swiperight

( function( factory ) {
        if ( typeof define === "function" && define.amd ) {

// AMD. Register as an anonymous module.
            define( 'events/touch',[
                "jquery",
                "../vmouse",
                "../support/touch" ], factory );
        } else {

// Browser globals
            factory( jQuery );
        }
    } )( function( $ ) {
        var $document = $( document ),
            supportTouch = $.mobile.support.touch,
            touchStartEvent = supportTouch ? "touchstart" : "mousedown",
            touchStopEvent = supportTouch ? "touchend" : "mouseup",
            touchMoveEvent = supportTouch ? "touchmove" : "mousemove";

// setup new event shortcuts
        $.each( ( "touchstart touchmove touchend " +
            "tap taphold " +
            "swipe swipeleft swiperight" ).split( " " ), function( i, name ) {

$.fn[ name ] = function( fn ) {
                return fn ? this.bind( name, fn ) : this.trigger( name );
            };

} );

// also handles taphold
        $.event.special.tap = {
            tapholdThreshold: 750,
            emitTapOnTaphold: true,
            setup: function() {
                var thisObject = this,
                    $this = $( thisObject ),
                    isTaphold = false;

$this.bind( "vmousedown", function( event ) {
                    isTaphold = false;
                    if ( event.which && event.which !== 1 ) {
                        return true;
                    }

var origTarget = event.target,
                        timer, clickHandler;

function clearTapTimer() {
                        if ( timer ) {
                            $this.bind( "vclick", clickHandler );
                            clearTimeout( timer );
                        }
                    }

function clearTapHandlers() {
                        clearTapTimer();

$this.unbind( "vclick", clickHandler )
                            .unbind( "vmouseup", clearTapTimer );
                        $document.unbind( "vmousecancel", clearTapHandlers );
                    }

clickHandler = function( event ) {
                        clearTapHandlers();

// ONLY trigger a 'tap' event if the start target is
                        // the same as the stop target.
                        if ( !isTaphold && origTarget === event.target ) {
                            triggerCustomEvent( thisObject, "tap", event );
                        } else if ( isTaphold ) {
                            event.preventDefault();
                        }
                    };

$this.bind( "vmouseup", clearTapTimer );

$document.bind( "vmousecancel", clearTapHandlers );

timer = setTimeout( function() {
                        if ( !$.event.special.tap.emitTapOnTaphold ) {
                            isTaphold = true;
                        }
                        timer = 0;
                        triggerCustomEvent( thisObject, "taphold", $.Event( "taphold", { target: origTarget } ) );
                    }, $.event.special.tap.tapholdThreshold );
                } );
            },
            teardown: function() {
                $( this ).unbind( "vmousedown" ).unbind( "vclick" ).unbind( "vmouseup" );
                $document.unbind( "vmousecancel" );
            }
        };

// Also handles swipeleft, swiperight
        $.event.special.swipe = {

// More than this horizontal displacement, and we will suppress scrolling.
            scrollSupressionThreshold: 30,

// More time than this, and it isn't a swipe.
            durationThreshold: 1000,

// Swipe horizontal displacement must be more than this.
            horizontalDistanceThreshold: window.devicePixelRatio >= 2 ? 15 : 30,

// Swipe vertical displacement must be less than this.
            verticalDistanceThreshold: window.devicePixelRatio >= 2 ? 15 : 30,

getLocation: function( event ) {
                var winPageX = window.pageXOffset,
                    winPageY = window.pageYOffset,
                    x = event.clientX,
                    y = event.clientY;

if ( event.pageY === 0 && Math.floor( y ) > Math.floor( event.pageY ) ||
                    event.pageX === 0 && Math.floor( x ) > Math.floor( event.pageX ) ) {

// iOS4 clientX/clientY have the value that should have been
                    // in pageX/pageY. While pageX/page/ have the value 0
                    x = x - winPageX;
                    y = y - winPageY;
                } else if ( y < ( event.pageY - winPageY ) || x < ( event.pageX - winPageX ) ) {

// Some Android browsers have totally bogus values for clientX/Y
                    // when scrolling/zooming a page. Detectable since clientX/clientY
                    // should never be smaller than pageX/pageY minus page scroll
                    x = event.pageX - winPageX;
                    y = event.pageY - winPageY;
                }

return {
                    x: x,
                    y: y
                };
            },

start: function( event ) {
                var data = event.originalEvent.touches ?
                    event.originalEvent.touches[ 0 ] : event,
                    location = $.event.special.swipe.getLocation( data );
                return {
                    time: ( new Date() ).getTime(),
                    coords: [ location.x, location.y ],
                    origin: $( event.target )
                };
            },

stop: function( event ) {
                var data = event.originalEvent.touches ?
                    event.originalEvent.touches[ 0 ] : event,
                    location = $.event.special.swipe.getLocation( data );
                return {
                    time: ( new Date() ).getTime(),
                    coords: [ location.x, location.y ]
                };
            },

handleSwipe: function( start, stop, thisObject, origTarget ) {
                if ( stop.time - start.time < $.event.special.swipe.durationThreshold &&
                    Math.abs( start.coords[ 0 ] - stop.coords[ 0 ] ) > $.event.special.swipe.horizontalDistanceThreshold &&
                    Math.abs( start.coords[ 1 ] - stop.coords[ 1 ] ) < $.event.special.swipe.verticalDistanceThreshold ) {
                    var direction = start.coords[ 0 ] > stop.coords[ 0 ] ? "swipeleft" : "swiperight";

triggerCustomEvent( thisObject, "swipe", $.Event( "swipe", { target: origTarget, swipestart: start, swipestop: stop } ), true );
                    triggerCustomEvent( thisObject, direction, $.Event( direction, { target: origTarget, swipestart: start, swipestop: stop } ), true );
                    return true;
                }
                return false;

// This serves as a flag to ensure that at most one swipe event event is
            // in work at any given time
            eventInProgress: false,

setup: function() {
                var events,
                    thisObject = this,
                    $this = $( thisObject ),
                    context = {};

// Retrieve the events data for this element and add the swipe context
                events = $.data( this, "mobile-events" );
                if ( !events ) {
                    events = { length: 0 };
                    $.data( this, "mobile-events", events );
                }
                events.length++;
                events.swipe = context;

context.start = function( event ) {

// Bail if we're already working on a swipe event
                    if ( $.event.special.swipe.eventInProgress ) {
                        return;
                    }
                    $.event.special.swipe.eventInProgress = true;

var stop,
                        start = $.event.special.swipe.start( event ),
                        origTarget = event.target,
                        emitted = false;

context.move = function( event ) {
                        if ( !start || event.isDefaultPrevented() ) {
                            return;
                        }

stop = $.event.special.swipe.stop( event );
                        if ( !emitted ) {
                            emitted = $.event.special.swipe.handleSwipe( start, stop, thisObject, origTarget );
                            if ( emitted ) {

// Reset the context to make way for the next swipe event
                                $.event.special.swipe.eventInProgress = false;
                            }
                        }
                        // prevent scrolling
                        if ( Math.abs( start.coords[ 0 ] - stop.coords[ 0 ] ) > $.event.special.swipe.scrollSupressionThreshold ) {
                            event.preventDefault();
                        }
                    };

context.stop = function() {
                        emitted = true;

// Reset the context to make way for the next swipe event
                        $.event.special.swipe.eventInProgress = false;
                        $document.off( touchMoveEvent, context.move );
                        context.move = null;
                    };

$document.on( touchMoveEvent, context.move )
                        .one( touchStopEvent, context.stop );
                };
                $this.on( touchStartEvent, context.start );
            },

teardown: function() {
                var events, context;

events = $.data( this, "mobile-events" );
                if ( events ) {
                    context = events.swipe;
                    delete events.swipe;
                    events.length--;
                    if ( events.length === 0 ) {
                        $.removeData( this, "mobile-events" );
                    }
                }

if ( context ) {
                    if ( context.start ) {
                        $( this ).off( touchStartEvent, context.start );
                    }
                    if ( context.move ) {
                        $document.off( touchMoveEvent, context.move );
                    }
                    if ( context.stop ) {
                        $document.off( touchStopEvent, context.stop );
                    }
                }
            }
        };
        $.each( {
            taphold: "tap",
            swipeleft: "swipe.left",
            swiperight: "swipe.right"
        }, function( event, sourceEvent ) {

$.event.special[ event ] = {
                setup: function() {
                    $( this ).bind( sourceEvent, $.noop );
                },
                teardown: function() {
                    $( this ).unbind( sourceEvent );
                }
            };
        } );

return $.event.special;
    } );
}));