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Fix undefined window #52

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merged 1 commit into from
Jun 14, 2018
Merged

Fix undefined window #52

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32 changes: 15 additions & 17 deletions lib/wheel-indicator.js
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Original file line number Diff line number Diff line change
Expand Up @@ -7,16 +7,15 @@

/* global module, window, document */

var WheelIndicator = (function(win, doc) {
var eventWheel = 'onwheel' in doc ? 'wheel' : 'mousewheel',

DEFAULTS = {
var WheelIndicator = (function() {
function Module(options) {
var DEFAULTS = {
callback: function(){},
elem: doc,
elem: document,
preventMouse: true
};

function Module(options){
this.eventWheel = 'onwheel' in document ? 'wheel' : 'mousewheel'
this._options = extend(DEFAULTS, options);
this._deltaArray = [ 0, 0, 0 ];
this._isAcceleration = false;
Expand All @@ -31,12 +30,12 @@ var WheelIndicator = (function(win, doc) {
processDelta.call(self, event);

if (self._options.preventMouse) {
preventDefault(event);
preventDefault(event);
}
}
};

addEvent(this._options.elem, eventWheel, this._wheelHandler);
addEvent(this._options.elem, this.eventWheel, this._wheelHandler);
}

Module.prototype = {
Expand Down Expand Up @@ -64,14 +63,14 @@ var WheelIndicator = (function(win, doc) {
var neededOption = this._options[option];

if (neededOption !== undefined) {
return neededOption;
return neededOption;
}

throw new Error('Unknown option');
},

destroy: function(){
removeEvent(this._options.elem, eventWheel, this._wheelHandler);
removeEvent(this._options.elem, this.eventWheel, this._wheelHandler);

return this;
}
Expand All @@ -84,8 +83,7 @@ var WheelIndicator = (function(win, doc) {
}

var getDeltaY = function(event){

if(event.wheelDelta && !event.deltaY) {
if (event.wheelDelta && !event.deltaY) {
getDeltaY = function(event) {
return event.wheelDelta * -1;
};
Expand All @@ -99,7 +97,7 @@ var WheelIndicator = (function(win, doc) {
};

function preventDefault(event){
event = event || win.event;
event = event || window.event;

if (event.preventDefault) {
event.preventDefault();
Expand Down Expand Up @@ -137,7 +135,7 @@ var WheelIndicator = (function(win, doc) {
}

//if all of last three deltas is greater than 0 or lesser than 0 then direction is switched
if(Math.abs(repeatDirection) === arrayLength) {
if (Math.abs(repeatDirection) === arrayLength) {
//determine type of sustainable direction
//(three positive or negative deltas in a row)
sustainableDirection = repeatDirection > 0 ? 'down' : 'up';
Expand All @@ -150,7 +148,7 @@ var WheelIndicator = (function(win, doc) {
}

//if wheel`s moving and current event is not the first in array
if(!self._isStopped){
if (!self._isStopped){
if(changedDirection) {
self._isAcceleration = true;

Expand All @@ -168,7 +166,7 @@ var WheelIndicator = (function(win, doc) {
}

//if wheel is stopped and current delta value is the first in array
if(self._isStopped) {
if (self._isStopped) {
self._isStopped = false;
self._isAcceleration = true;
self._direction = direction;
Expand Down Expand Up @@ -239,7 +237,7 @@ var WheelIndicator = (function(win, doc) {
}

return Module;
}(window, document));
}());

if (typeof exports === 'object') {
module.exports = WheelIndicator;
Expand Down