jquery.nicescroll.js

js nyamkin.ru collected 2026-09-25 04:00:41 UTC 120,135 bytes, 3,729 lines download raw bytes
vendor: 120,135 bytes, lines 1-3729
1/* jquery.nicescroll
2-- version 3.7.6
3-- copyright 2017-07-19 InuYaksa*2017
4-- licensed under the MIT
5--
6-- https://nicescroll.areaaperta.com/
7-- https://github.com/inuyaksa/jquery.nicescroll
8--
9*/
10
11/* jshint expr: true */
12
13(function (factory) {
14  if (typeof define === 'function' && define.amd) {
15    // AMD. Register as anonymous module.
16    define(['jquery'], factory);
17  } else if (typeof exports === 'object') {
18    // Node/CommonJS.
19    module.exports = factory(require('jquery'));
20  } else {
21    // Browser globals.
22    factory(jQuery);
23  }
24}(function (jQuery) {
25
26  "use strict";
27
28  // globals
29  var domfocus = false,
30    mousefocus = false,
31    tabindexcounter = 0,
32    ascrailcounter = 2000,
33    globalmaxzindex = 0;
34
35  var $ = jQuery,       // sandbox
36    _doc = document,
37    _win = window,
38    $window = $(_win);
39
40  var delegatevents = [];
41
42  // http://stackoverflow.com/questions/2161159/get-script-path
43  function getScriptPath() {
44    var scripts = _doc.currentScript || (function () { var s = _doc.getElementsByTagName('script'); return (s.length) ? s[s.length - 1] : false; })();
45    var path = scripts ? scripts.src.split('?')[0] : '';
46    return (path.split('/').length > 0) ? path.split('/').slice(0, -1).join('/') + '/' : '';
47  }
48
49  // based on code by Paul Irish https://www.paulirish.com/2011/requestanimationframe-for-smart-animating/  
50  var setAnimationFrame = _win.requestAnimationFrame || _win.webkitRequestAnimationFrame || _win.mozRequestAnimationFrame || false;
51  var clearAnimationFrame = _win.cancelAnimationFrame || _win.webkitCancelAnimationFrame || _win.mozCancelAnimationFrame || false;
52
53  if (!setAnimationFrame) {
54    var anilasttime = 0;
55    setAnimationFrame = function (callback, element) {
56      var currTime = new Date().getTime();
57      var timeToCall = Math.max(0, 16 - (currTime - anilasttime));
58      var id = _win.setTimeout(function () { callback(currTime + timeToCall); },
59        timeToCall);
60      anilasttime = currTime + timeToCall;
61      return id;
62    };
63    clearAnimationFrame = function (id) {
64      _win.clearTimeout(id);
65    };
66  } else {
67    if (!_win.cancelAnimationFrame) clearAnimationFrame = function (id) { };
68  }
69
70  var ClsMutationObserver = _win.MutationObserver || _win.WebKitMutationObserver || false;
71
72  var now = Date.now || function () { return new Date().getTime(); };
73
74  var _globaloptions = {
75    zindex: "auto",
76    cursoropacitymin: 0,
77    cursoropacitymax: 1,
78    cursorcolor: "#424242",
79    cursorwidth: "6px",
80    cursorborder: "1px solid #fff",
81    cursorborderradius: "5px",
82    scrollspeed: 40,
83    mousescrollstep: 9 * 3,
84    touchbehavior: false,   // deprecated
85    emulatetouch: false,    // replacing touchbehavior
86    hwacceleration: true,
87    usetransition: true,
88    boxzoom: false,
89    dblclickzoom: true,
90    gesturezoom: true,
91    grabcursorenabled: true,
92    autohidemode: true,
93    background: "",
94    iframeautoresize: true,
95    cursorminheight: 32,
96    preservenativescrolling: true,
97    railoffset: false,
98    railhoffset: false,
99    bouncescroll: true,
100    spacebarenabled: true,
101    railpadding: {
102      top: 0,
103      right: 0,
104      left: 0,
105      bottom: 0
106    },
107    disableoutline: true,
108    horizrailenabled: true,
109    railalign: "right",
110    railvalign: "bottom",
111    enabletranslate3d: true,
112    enablemousewheel: true,
113    enablekeyboard: true,
114    smoothscroll: true,
115    sensitiverail: true,
116    enablemouselockapi: true,
117    //      cursormaxheight:false,
118    cursorfixedheight: false,
119    directionlockdeadzone: 6,
120    hidecursordelay: 400,
121    nativeparentscrolling: true,
122    enablescrollonselection: true,
123    overflowx: true,
124    overflowy: true,
125    cursordragspeed: 0.3,
126    rtlmode: "auto",
127    cursordragontouch: false,
128    oneaxismousemode: "auto",
129    scriptpath: getScriptPath(),
130    preventmultitouchscrolling: true,
131    disablemutationobserver: false,
132    enableobserver: true,
133    scrollbarid: false,
134    scrollCLass: false
135  };
136
137  var browserdetected = false;
138
139  var getBrowserDetection = function () {
140
141    if (browserdetected) return browserdetected;
142
143    var _el = _doc.createElement('DIV'),
144      _style = _el.style,
145      _agent = navigator.userAgent,
146      _platform = navigator.platform,
147      d = {};
148
149    d.haspointerlock = "pointerLockElement" in _doc || "webkitPointerLockElement" in _doc || "mozPointerLockElement" in _doc;
150
151    d.isopera = ("opera" in _win); // 12-
152    d.isopera12 = (d.isopera && ("getUserMedia" in navigator));
153    d.isoperamini = (Object.prototype.toString.call(_win.operamini) === "[object OperaMini]");
154
155    d.isie = (("all" in _doc) && ("attachEvent" in _el) && !d.isopera); //IE10-
156    d.isieold = (d.isie && !("msInterpolationMode" in _style)); // IE6 and older
157    d.isie7 = d.isie && !d.isieold && (!("documentMode" in _doc) || (_doc.documentMode === 7));
158    d.isie8 = d.isie && ("documentMode" in _doc) && (_doc.documentMode === 8);
159    d.isie9 = d.isie && ("performance" in _win) && (_doc.documentMode === 9);
160    d.isie10 = d.isie && ("performance" in _win) && (_doc.documentMode === 10);
161    d.isie11 = ("msRequestFullscreen" in _el) && (_doc.documentMode >= 11); // IE11+
162
163    d.ismsedge = ("msCredentials" in _win);  // MS Edge 14+
164
165    d.ismozilla = ("MozAppearance" in _style);
166
167    d.iswebkit = !d.ismsedge && ("WebkitAppearance" in _style);
168
169    d.ischrome = d.iswebkit && ("chrome" in _win);
170    d.ischrome38 = (d.ischrome && ("touchAction" in _style)); // behavior changed in touch emulation    
171    d.ischrome22 = (!d.ischrome38) && (d.ischrome && d.haspointerlock);
172    d.ischrome26 = (!d.ischrome38) && (d.ischrome && ("transition" in _style)); // issue with transform detection (maintain prefix)
173
174    d.cantouch = ("ontouchstart" in _doc.documentElement) || ("ontouchstart" in _win); // with detection for Chrome Touch Emulation    
175    d.hasw3ctouch = (_win.PointerEvent || false) && ((navigator.maxTouchPoints > 0) || (navigator.msMaxTouchPoints > 0)); //IE11 pointer events, following W3C Pointer Events spec
176    d.hasmstouch = (!d.hasw3ctouch) && (_win.MSPointerEvent || false); // IE10 pointer events
177
178    d.ismac = /^mac$/i.test(_platform);
179
180    d.isios = d.cantouch && /iphone|ipad|ipod/i.test(_platform);
181    d.isios4 = d.isios && !("seal" in Object);
182    d.isios7 = d.isios && ("webkitHidden" in _doc);  //iOS 7+
183    d.isios8 = d.isios && ("hidden" in _doc);  //iOS 8+
184    d.isios10 = d.isios && _win.Proxy;  //iOS 10+
185
186    d.isandroid = (/android/i.test(_agent));
187
188    d.haseventlistener = ("addEventListener" in _el);
189
190    d.trstyle = false;
191    d.hastransform = false;
192    d.hastranslate3d = false;
193    d.transitionstyle = false;
194    d.hastransition = false;
195    d.transitionend = false;
196
197    d.trstyle = "transform";
198    d.hastransform = ("transform" in _style) || (function () {
199      var check = ['msTransform', 'webkitTransform', 'MozTransform', 'OTransform'];
200      for (var a = 0, c = check.length; a < c; a++) {
201        if (_style[check[a]] !== undefined) {
202          d.trstyle = check[a];
203          break;
204        }
205      }
206      d.hastransform = (!!d.trstyle);
207    })();
208
209    if (d.hastransform) {
210      _style[d.trstyle] = "translate3d(1px,2px,3px)";
211      d.hastranslate3d = /translate3d/.test(_style[d.trstyle]);
212    }
213
214    d.transitionstyle = "transition";
215    d.prefixstyle = '';
216    d.transitionend = "transitionend";
217
218    d.hastransition = ("transition" in _style) || (function () {
219
220      d.transitionend = false;
221      var check = ['webkitTransition', 'msTransition', 'MozTransition', 'OTransition', 'OTransition', 'KhtmlTransition'];
222      var prefix = ['-webkit-', '-ms-', '-moz-', '-o-', '-o', '-khtml-'];
223      var evs = ['webkitTransitionEnd', 'msTransitionEnd', 'transitionend', 'otransitionend', 'oTransitionEnd', 'KhtmlTransitionEnd'];
224      for (var a = 0, c = check.length; a < c; a++) {
225        if (check[a] in _style) {
226          d.transitionstyle = check[a];
227          d.prefixstyle = prefix[a];
228          d.transitionend = evs[a];
229          break;
230        }
231      }
232      if (d.ischrome26) d.prefixstyle = prefix[1];  // always use prefix
233
234      d.hastransition = (d.transitionstyle);
235
236    })();
237
238    function detectCursorGrab() {
239      var lst = ['grab', '-webkit-grab', '-moz-grab'];
240      if ((d.ischrome && !d.ischrome38) || d.isie) lst = []; // force setting for IE returns false positive and chrome cursor bug
241      for (var a = 0, l = lst.length; a < l; a++) {
242        var p = lst[a];
243        _style.cursor = p;
244        if (_style.cursor == p) return p;
245      }
246      return 'url(https://cdnjs.cloudflare.com/ajax/libs/slider-pro/1.3.0/css/images/openhand.cur),n-resize'; // thanks to https://cdnjs.com/ for the openhand cursor!
247    }
248    d.cursorgrabvalue = detectCursorGrab();
249
250    d.hasmousecapture = ("setCapture" in _el);
251
252    d.hasMutationObserver = (ClsMutationObserver !== false);
253
254    _el = null; //memory released
255
256    browserdetected = d;
257
258    return d;
259  };
260
261  var NiceScrollClass = function (myopt, me) {
262
263    var self = this;
264
265    this.version = '3.7.6';
266    this.name = 'nicescroll';
267
268    this.me = me;
269
270    var $body = $("body");
271
272    var opt = this.opt = {
273      doc: $body,
274      win: false
275    };
276
277    $.extend(opt, _globaloptions);  // clone opts
278
279    // Options for internal use
280    opt.snapbackspeed = 80;
281
282    if (myopt || false) {
283      for (var a in opt) {
284        if (myopt[a] !== undefined) opt[a] = myopt[a];
285      }
286    }
287
288    if (opt.disablemutationobserver) ClsMutationObserver = false;
289
290    this.doc = opt.doc;
291    this.iddoc = (this.doc && this.doc[0]) ? this.doc[0].id || '' : '';
292    this.ispage = /^BODY|HTML/.test((opt.win) ? opt.win[0].nodeName : this.doc[0].nodeName);
293    this.haswrapper = (opt.win !== false);
294    this.win = opt.win || (this.ispage ? $window : this.doc);
295    this.docscroll = (this.ispage && !this.haswrapper) ? $window : this.win;
296    this.body = $body;
297    this.viewport = false;
298
299    this.isfixed = false;
300
301    this.iframe = false;
302    this.isiframe = ((this.doc[0].nodeName == 'IFRAME') && (this.win[0].nodeName == 'IFRAME'));
303
304    this.istextarea = (this.win[0].nodeName == 'TEXTAREA');
305
306    this.forcescreen = false; //force to use screen position on events
307
308    this.canshowonmouseevent = (opt.autohidemode != "scroll");
309
310    // Events jump table    
311    this.onmousedown = false;
312    this.onmouseup = false;
313    this.onmousemove = false;
314    this.onmousewheel = false;
315    this.onkeypress = false;
316    this.ongesturezoom = false;
317    this.onclick = false;
318
319    // Nicescroll custom events
320    this.onscrollstart = false;
321    this.onscrollend = false;
322    this.onscrollcancel = false;
323
324    this.onzoomin = false;
325    this.onzoomout = false;
326
327    // Let's start!  
328    this.view = false;
329    this.page = false;
330
331    this.scroll = {
332      x: 0,
333      y: 0
334    };
335    this.scrollratio = {
336      x: 0,
337      y: 0
338    };
339    this.cursorheight = 20;
340    this.scrollvaluemax = 0;
341
342    // http://dev.w3.org/csswg/css-writing-modes-3/#logical-to-physical
343    // http://dev.w3.org/csswg/css-writing-modes-3/#svg-writing-mode
344    if (opt.rtlmode == "auto") {
345      var target = this.win[0] == _win ? this.body : this.win;
346      var writingMode = target.css("writing-mode") || target.css("-webkit-writing-mode") || target.css("-ms-writing-mode") || target.css("-moz-writing-mode");
347
348      if (writingMode == "horizontal-tb" || writingMode == "lr-tb" || writingMode === "") {
349        this.isrtlmode = (target.css("direction") == "rtl");
350        this.isvertical = false;
351      } else {
352        this.isrtlmode = (writingMode == "vertical-rl" || writingMode == "tb" || writingMode == "tb-rl" || writingMode == "rl-tb");
353        this.isvertical = (writingMode == "vertical-rl" || writingMode == "tb" || writingMode == "tb-rl");
354      }
355    } else {
356      this.isrtlmode = (opt.rtlmode === true);
357      this.isvertical = false;
358    }
359    //    this.checkrtlmode = false;
360
361    this.scrollrunning = false;
362
363    this.scrollmom = false;
364
365    this.observer = false;  // observer div changes
366    this.observerremover = false;  // observer on parent for remove detection
367    this.observerbody = false;  // observer on body for position change
368
369    if (opt.scrollbarid !== false) {
370      this.id = opt.scrollbarid;
371    } else {
372      do {
373        this.id = "ascrail" + (ascrailcounter++);
374      } while (_doc.getElementById(this.id));
375    }
376
377    this.rail = false;
378    this.cursor = false;
379    this.cursorfreezed = false;
380    this.selectiondrag = false;
381
382    this.zoom = false;
383    this.zoomactive = false;
384
385    this.hasfocus = false;
386    this.hasmousefocus = false;
387
388    //this.visibility = true;
389    this.railslocked = false;  // locked by resize
390    this.locked = false;  // prevent lost of locked status sets by user
391    this.hidden = false; // rails always hidden
392    this.cursoractive = true; // user can interact with cursors
393
394    this.wheelprevented = false; //prevent mousewheel event
395
396    this.overflowx = opt.overflowx;
397    this.overflowy = opt.overflowy;
398
399    this.nativescrollingarea = false;
400    this.checkarea = 0;
401
402    this.events = []; // event list for unbind
403
404    this.saved = {};  // style saved
405
406    this.delaylist = {};
407    this.synclist = {};
408
409    this.lastdeltax = 0;
410    this.lastdeltay = 0;
411
412    this.detected = getBrowserDetection();
413
414    var cap = $.extend({}, this.detected);
415
416    this.canhwscroll = (cap.hastransform && opt.hwacceleration);
417    this.ishwscroll = (this.canhwscroll && self.haswrapper);
418
419    if (!this.isrtlmode) {
420      this.hasreversehr = false;
421    } else if (this.isvertical) { // RTL mode with reverse horizontal axis
422      this.hasreversehr = !(cap.iswebkit || cap.isie || cap.isie11);
423    } else {
424      this.hasreversehr = !(cap.iswebkit || (cap.isie && !cap.isie10 && !cap.isie11));
425    }
426
427    this.istouchcapable = false; // desktop devices with touch screen support
428
429    //## Check WebKit-based desktop with touch support
430    //## + Firefox 18 nightly build (desktop) false positive (or desktop with touch support)
431
432    if (!cap.cantouch && (cap.hasw3ctouch || cap.hasmstouch)) {  // desktop device with multiple input
433      this.istouchcapable = true;
434    } else if (cap.cantouch && !cap.isios && !cap.isandroid && (cap.iswebkit || cap.ismozilla)) {
435      this.istouchcapable = true;
436    }
437
438    //## disable MouseLock API on user request
439    if (!opt.enablemouselockapi) {
440      cap.hasmousecapture = false;
441      cap.haspointerlock = false;
442    }
443
444    this.debounced = function (name, fn, tm) {
445      if (!self) return;
446      var dd = self.delaylist[name] || false;
447      if (!dd) {
448        self.delaylist[name] = {
449          h: setAnimationFrame(function () {
450            self.delaylist[name].fn.call(self);
451            self.delaylist[name] = false;
452          }, tm)
453        };
454        fn.call(self);
455      }
456      self.delaylist[name].fn = fn;
457    };
458
459
460    this.synched = function (name, fn) {
461      if (self.synclist[name]) self.synclist[name] = fn;
462      else {
463        self.synclist[name] = fn;
464        setAnimationFrame(function () {
465          if (!self) return;
466          self.synclist[name] && self.synclist[name].call(self);
467          self.synclist[name] = null;
468        });
469      }
470    };
471
472    this.unsynched = function (name) {
473      if (self.synclist[name]) self.synclist[name] = false;
474    };
475
476    this.css = function (el, pars) { // save & set
477      for (var n in pars) {
478        self.saved.css.push([el, n, el.css(n)]);
479        el.css(n, pars[n]);
480      }
481    };
482
483    this.scrollTop = function (val) {
484      return (val === undefined) ? self.getScrollTop() : self.setScrollTop(val);
485    };
486
487    this.scrollLeft = function (val) {
488      return (val === undefined) ? self.getScrollLeft() : self.setScrollLeft(val);
489    };
490
491    // derived by by Dan Pupius www.pupius.net
492    var BezierClass = function (st, ed, spd, p1, p2, p3, p4) {
493
494      this.st = st;
495      this.ed = ed;
496      this.spd = spd;
497
498      this.p1 = p1 || 0;
499      this.p2 = p2 || 1;
500      this.p3 = p3 || 0;
501      this.p4 = p4 || 1;
502
503      this.ts = now();
504      this.df = ed - st;
505    };
506    BezierClass.prototype = {
507      B2: function (t) {
508        return 3 * (1 - t) * (1 - t) * t;
509      },
510      B3: function (t) {
511        return 3 * (1 - t) * t * t;
512      },
513      B4: function (t) {
514        return t * t * t;
515      },
516      getPos: function () {
517        return (now() - this.ts) / this.spd;
518      },
519      getNow: function () {
520        var pc = (now() - this.ts) / this.spd;
521        var bz = this.B2(pc) + this.B3(pc) + this.B4(pc);
522        return (pc >= 1) ? this.ed : this.st + (this.df * bz) | 0;
523      },
524      update: function (ed, spd) {
525        this.st = this.getNow();
526        this.ed = ed;
527        this.spd = spd;
528        this.ts = now();
529        this.df = this.ed - this.st;
530        return this;
531      }
532    };
533
534    //derived from http://stackoverflow.com/questions/11236090/
535    function getMatrixValues() {
536      var tr = self.doc.css(cap.trstyle);
537      if (tr && (tr.substr(0, 6) == "matrix")) {
538        return tr.replace(/^.*\((.*)\)$/g, "$1").replace(/px/g, '').split(/, +/);
539      }
540      return false;
541    }
542
543    if (this.ishwscroll) {    // hw accelerated scroll
544
545      this.doc.translate = {
546        x: 0,
547        y: 0,
548        tx: "0px",
549        ty: "0px"
550      };
551
552      //this one can help to enable hw accel on ios6 http://indiegamr.com/ios6-html-hardware-acceleration-changes-and-how-to-fix-them/
553      if (cap.hastranslate3d && cap.isios) this.doc.css("-webkit-backface-visibility", "hidden"); // prevent flickering http://stackoverflow.com/questions/3461441/      
554
555      this.getScrollTop = function (last) {
556        if (!last) {
557          var mtx = getMatrixValues();
558          if (mtx) return (mtx.length == 16) ? -mtx[13] : -mtx[5]; //matrix3d 16 on IE10
559          if (self.timerscroll && self.timerscroll.bz) return self.timerscroll.bz.getNow();
560        }
561        return self.doc.translate.y;
562      };
563
564      this.getScrollLeft = function (last) {
565        if (!last) {
566          var mtx = getMatrixValues();
567          if (mtx) return (mtx.length == 16) ? -mtx[12] : -mtx[4]; //matrix3d 16 on IE10
568          if (self.timerscroll && self.timerscroll.bh) return self.timerscroll.bh.getNow();
569        }
570        return self.doc.translate.x;
571      };
572
573      this.notifyScrollEvent = function (el) {
574        var e = _doc.createEvent("UIEvents");
575        e.initUIEvent("scroll", false, false, _win, 1);
576        e.niceevent = true;
577        el.dispatchEvent(e);
578      };
579
580      var cxscrollleft = (this.isrtlmode) ? 1 : -1;
581
582      if (cap.hastranslate3d && opt.enabletranslate3d) {
583        this.setScrollTop = function (val, silent) {
584          self.doc.translate.y = val;
585          self.doc.translate.ty = (val * -1) + "px";
586          self.doc.css(cap.trstyle, "translate3d(" + self.doc.translate.tx + "," + self.doc.translate.ty + ",0)");
587          if (!silent) self.notifyScrollEvent(self.win[0]);
588        };
589        this.setScrollLeft = function (val, silent) {
590          self.doc.translate.x = val;
591          self.doc.translate.tx = (val * cxscrollleft) + "px";
592          self.doc.css(cap.trstyle, "translate3d(" + self.doc.translate.tx + "," + self.doc.translate.ty + ",0)");
593          if (!silent) self.notifyScrollEvent(self.win[0]);
594        };
595      } else {
596        this.setScrollTop = function (val, silent) {
597          self.doc.translate.y = val;
598          self.doc.translate.ty = (val * -1) + "px";
599          self.doc.css(cap.trstyle, "translate(" + self.doc.translate.tx + "," + self.doc.translate.ty + ")");
600          if (!silent) self.notifyScrollEvent(self.win[0]);
601        };
602        this.setScrollLeft = function (val, silent) {
603          self.doc.translate.x = val;
604          self.doc.translate.tx = (val * cxscrollleft) + "px";
605          self.doc.css(cap.trstyle, "translate(" + self.doc.translate.tx + "," + self.doc.translate.ty + ")");
606          if (!silent) self.notifyScrollEvent(self.win[0]);
607        };
608      }
609    } else {    // native scroll
610
611      this.getScrollTop = function () {
612        return self.docscroll.scrollTop();
613      };
614      this.setScrollTop = function (val) {
615        self.docscroll.scrollTop(val);
616      };
617
618      this.getScrollLeft = function () {
619        var val;
620        if (!self.hasreversehr) {
621          val = self.docscroll.scrollLeft();
622        } else if (self.detected.ismozilla) {
623          val = self.page.maxw - Math.abs(self.docscroll.scrollLeft());
624        } else {
625          val = self.page.maxw - self.docscroll.scrollLeft();
626        }
627        return val;
628      };
629      this.setScrollLeft = function (val) {
630        return setTimeout(function () {
631          if (!self) return;
632          if (self.hasreversehr) {
633            if (self.detected.ismozilla) {
634              val = -(self.page.maxw - val);
635            } else {
636              val = self.page.maxw - val;
637            }
638          }
639          return self.docscroll.scrollLeft(val);
640        }, 1);
641      };
642    }
643
644    this.getTarget = function (e) {
645      if (!e) return false;
646      if (e.target) return e.target;
647      if (e.srcElement) return e.srcElement;
648      return false;
649    };
650
651    this.hasParent = function (e, id) {
652      if (!e) return false;
653      var el = e.target || e.srcElement || e || false;
654      while (el && el.id != id) {
655        el = el.parentNode || false;
656      }
657      return (el !== false);
658    };
659
660    function getZIndex() {
661      var dom = self.win;
662      if ("zIndex" in dom) return dom.zIndex(); // use jQuery UI method when available
663      while (dom.length > 0) {
664        if (dom[0].nodeType == 9) return false;
665        var zi = dom.css('zIndex');
666        if (!isNaN(zi) && zi !== 0) return parseInt(zi);
667        dom = dom.parent();
668      }
669      return false;
670    }
671
672    //inspired by http://forum.jquery.com/topic/width-includes-border-width-when-set-to-thin-medium-thick-in-ie
673    var _convertBorderWidth = {
674      "thin": 1,
675      "medium": 3,
676      "thick": 5
677    };
678
679    function getWidthToPixel(dom, prop, chkheight) {
680      var wd = dom.css(prop);
681      var px = parseFloat(wd);
682      if (isNaN(px)) {
683        px = _convertBorderWidth[wd] || 0;
684        var brd = (px == 3) ? ((chkheight) ? (self.win.outerHeight() - self.win.innerHeight()) : (self.win.outerWidth() - self.win.innerWidth())) : 1; //DON'T TRUST CSS
685        if (self.isie8 && px) px += 1;
686        return (brd) ? px : 0;
687      }
688      return px;
689    }
690
691    this.getDocumentScrollOffset = function () {
692      return {
693        top: _win.pageYOffset || _doc.documentElement.scrollTop,
694        left: _win.pageXOffset || _doc.documentElement.scrollLeft
695      };
696    };
697
698    this.getOffset = function () {
699      if (self.isfixed) {
700        var ofs = self.win.offset();  // fix Chrome auto issue (when right/bottom props only)
701        var scrl = self.getDocumentScrollOffset();
702        ofs.top -= scrl.top;
703        ofs.left -= scrl.left;
704        return ofs;
705      }
706      var ww = self.win.offset();
707      if (!self.viewport) return ww;
708      var vp = self.viewport.offset();
709      return {
710        top: ww.top - vp.top,
711        left: ww.left - vp.left
712      };
713    };
714
715    this.updateScrollBar = function (len) {
716      var pos, off;
717      if (self.ishwscroll) {
718        self.rail.css({
719          height: self.win.innerHeight() - (opt.railpadding.top + opt.railpadding.bottom)
720        });
721        if (self.railh) self.railh.css({
722          width: self.win.innerWidth() - (opt.railpadding.left + opt.railpadding.right)
723        });
724      } else {
725        var wpos = self.getOffset();
726        pos = {
727          top: wpos.top,
728          left: wpos.left - (opt.railpadding.left + opt.railpadding.right)
729        };
730        pos.top += getWidthToPixel(self.win, 'border-top-width', true);
731        pos.left += (self.rail.align) ? self.win.outerWidth() - getWidthToPixel(self.win, 'border-right-width') - self.rail.width : getWidthToPixel(self.win, 'border-left-width');
732
733        off = opt.railoffset;
734        if (off) {
735          if (off.top) pos.top += off.top;
736          if (off.left) pos.left += off.left;
737        }
738
739        if (!self.railslocked) self.rail.css({
740          top: pos.top,
741          left: pos.left,
742          height: ((len) ? len.h : self.win.innerHeight()) - (opt.railpadding.top + opt.railpadding.bottom)
743        });
744
745        if (self.zoom) {
746          self.zoom.css({
747            top: pos.top + 1,
748            left: (self.rail.align == 1) ? pos.left - 20 : pos.left + self.rail.width + 4
749          });
750        }
751
752        if (self.railh && !self.railslocked) {
753          pos = {
754            top: wpos.top,
755            left: wpos.left
756          };
757          off = opt.railhoffset;
758          if (off) {
759            if (off.top) pos.top += off.top;
760            if (off.left) pos.left += off.left;
761          }
762          var y = (self.railh.align) ? pos.top + getWidthToPixel(self.win, 'border-top-width', true) + self.win.innerHeight() - self.railh.height : pos.top + getWidthToPixel(self.win, 'border-top-width', true);
763          var x = pos.left + getWidthToPixel(self.win, 'border-left-width');
764          self.railh.css({
765            top: y - (opt.railpadding.top + opt.railpadding.bottom),
766            left: x,
767            width: self.railh.width
768          });
769        }
770
771      }
772    };
773
774    this.doRailClick = function (e, dbl, hr) {
775      var fn, pg, cur, pos;
776
777      if (self.railslocked) return;
778
779      self.cancelEvent(e);
780
781      if (!("pageY" in e)) {
782        e.pageX = e.clientX + _doc.documentElement.scrollLeft;
783        e.pageY = e.clientY + _doc.documentElement.scrollTop;
784      }
785
786      if (dbl) {
787        fn = (hr) ? self.doScrollLeft : self.doScrollTop;
788        cur = (hr) ? ((e.pageX - self.railh.offset().left - (self.cursorwidth / 2)) * self.scrollratio.x) : ((e.pageY - self.rail.offset().top - (self.cursorheight / 2)) * self.scrollratio.y);
789        self.unsynched("relativexy");
790        fn(cur|0);
791      } else {
792        fn = (hr) ? self.doScrollLeftBy : self.doScrollBy;
793        cur = (hr) ? self.scroll.x : self.scroll.y;
794        pos = (hr) ? e.pageX - self.railh.offset().left : e.pageY - self.rail.offset().top;
795        pg = (hr) ? self.view.w : self.view.h;
796        fn((cur >= pos) ? pg : -pg);
797      }
798
799    };
800
801    self.newscrolly = self.newscrollx = 0;
802
803    self.hasanimationframe = ("requestAnimationFrame" in _win);
804    self.hascancelanimationframe = ("cancelAnimationFrame" in _win);
805
806    self.hasborderbox = false;
807
808    this.init = function () {
809
810      self.saved.css = [];
811
812      if (cap.isoperamini) return true; // SORRY, DO NOT WORK!
813      if (cap.isandroid && !("hidden" in _doc)) return true; // Android 3- SORRY, DO NOT WORK!
814
815      opt.emulatetouch = opt.emulatetouch || opt.touchbehavior;  // mantain compatibility with "touchbehavior"      
816
817      self.hasborderbox = _win.getComputedStyle && (_win.getComputedStyle(_doc.body)['box-sizing'] === "border-box");
818
819      var _scrollyhidden = { 'overflow-y': 'hidden' };
820      if (cap.isie11 || cap.isie10) _scrollyhidden['-ms-overflow-style'] = 'none';  // IE 10 & 11 is always a world apart!
821
822      if (self.ishwscroll) {
823        this.doc.css(cap.transitionstyle, cap.prefixstyle + 'transform 0ms ease-out');
824        if (cap.transitionend) self.bind(self.doc, cap.transitionend, self.onScrollTransitionEnd, false); //I have got to do something usefull!!
825      }
826
827      self.zindex = "auto";
828      if (!self.ispage && opt.zindex == "auto") {
829        self.zindex = getZIndex() || "auto";
830      } else {
831        self.zindex = opt.zindex;
832      }
833
834      if (!self.ispage && self.zindex != "auto" && self.zindex > globalmaxzindex) {
835        globalmaxzindex = self.zindex;
836      }
837
838      if (self.isie && self.zindex === 0 && opt.zindex == "auto") { // fix IE auto == 0
839        self.zindex = "auto";
840      }
841
842      if (!self.ispage || !cap.isieold) {
843
844        var cont = self.docscroll;
845        if (self.ispage) cont = (self.haswrapper) ? self.win : self.doc;
846
847        self.css(cont, _scrollyhidden);
848
849        if (self.ispage && (cap.isie11 || cap.isie)) { // IE 7-11
850          self.css($("html"), _scrollyhidden);
851        }
852
853        if (cap.isios && !self.ispage && !self.haswrapper) self.css($body, {
854          "-webkit-overflow-scrolling": "touch"
855        }); //force hw acceleration
856
857        var cursor = $(_doc.createElement('div'));
858        cursor.css({
859          position: "relative",
860          top: 0,
861          "float": "right",
862          width: opt.cursorwidth,
863          height: 0,
864          'background-color': opt.cursorcolor,
865          border: opt.cursorborder,
866          'background-clip': 'padding-box',
867          '-webkit-border-radius': opt.cursorborderradius,
868          '-moz-border-radius': opt.cursorborderradius,
869          'border-radius': opt.cursorborderradius
870        });
871
872        cursor.addClass('nicescroll-cursors');
873
874        self.cursor = cursor;
875
876        var rail = $(_doc.createElement('div'));
877        rail.attr('id', self.id);
878        rail.addClass('nicescroll-rails nicescroll-rails-vr');
879
880        if (opt.scrollCLass) {
881            rail.addClass(opt.scrollCLass);
882        }
883
884        var v, a, kp = ["left", "right", "top", "bottom"];  //**
885        for (var n in kp) {
886          a = kp[n];
887          v = opt.railpadding[a] || 0;
888          v && rail.css("padding-" + a, v + "px");
889        }
890
891        rail.append(cursor);
892
893        rail.width = Math.max(parseFloat(opt.cursorwidth), cursor.outerWidth());
894        rail.css({
895          width: rail.width + "px",
896          zIndex: self.zindex,
897          background: opt.background,
898          cursor: "default"
899        });
900
901        rail.visibility = true;
902        rail.scrollable = true;
903
904        rail.align = (opt.railalign == "left") ? 0 : 1;
905
906        self.rail = rail;
907
908        self.rail.drag = false;
909
910        var zoom = false;
911        if (opt.boxzoom && !self.ispage && !cap.isieold) {
912          zoom = _doc.createElement('div');
913
914          self.bind(zoom, "click", self.doZoom);
915          self.bind(zoom, "mouseenter", function () {
916            self.zoom.css('opacity', opt.cursoropacitymax);
917          });
918          self.bind(zoom, "mouseleave", function () {
919            self.zoom.css('opacity', opt.cursoropacitymin);
920          });
921
922          self.zoom = $(zoom);
923          self.zoom.css({
924            cursor: "pointer",
925            zIndex: self.zindex,
926            backgroundImage: 'url(' + opt.scriptpath + 'zoomico.png)',
927            height: 18,
928            width: 18,
929            backgroundPosition: '0 0'
930          });
931          if (opt.dblclickzoom) self.bind(self.win, "dblclick", self.doZoom);
932          if (cap.cantouch && opt.gesturezoom) {
933            self.ongesturezoom = function (e) {
934              if (e.scale > 1.5) self.doZoomIn(e);
935              if (e.scale < 0.8) self.doZoomOut(e);
936              return self.cancelEvent(e);
937            };
938            self.bind(self.win, "gestureend", self.ongesturezoom);
939          }
940        }
941
942        // init HORIZ
943
944        self.railh = false;
945        var railh;
946
947        if (opt.horizrailenabled) {
948
949          self.css(cont, {
950            overflowX: 'hidden'
951          });
952
953          cursor = $(_doc.createElement('div'));
954          cursor.css({
955            position: "absolute",
956            top: 0,
957            height: opt.cursorwidth,
958            width: 0,
959            backgroundColor: opt.cursorcolor,
960            border: opt.cursorborder,
961            backgroundClip: 'padding-box',
962            '-webkit-border-radius': opt.cursorborderradius,
963            '-moz-border-radius': opt.cursorborderradius,
964            'border-radius': opt.cursorborderradius
965          });
966
967          if (cap.isieold) cursor.css('overflow', 'hidden');  //IE6 horiz scrollbar issue
968
969          cursor.addClass('nicescroll-cursors');
970
971          self.cursorh = cursor;
972
973          railh = $(_doc.createElement('div'));
974          railh.attr('id', self.id + '-hr');
975          railh.addClass('nicescroll-rails nicescroll-rails-hr');
976          if (opt.scrollCLass) {
977              railh.addClass(opt.scrollCLass);
978          }
979
980          railh.height = Math.max(parseFloat(opt.cursorwidth), cursor.outerHeight());
981          railh.css({
982            height: railh.height + "px",
983            'zIndex': self.zindex,
984            "background": opt.background
985          });
986
987          railh.append(cursor);
988
989          railh.visibility = true;
990          railh.scrollable = true;
991
992          railh.align = (opt.railvalign == "top") ? 0 : 1;
993
994          self.railh = railh;
995
996          self.railh.drag = false;
997
998        }
999
1000        if (self.ispage) {
1001
1002          rail.css({
1003            position: "fixed",
1004            top: 0,
1005            height: "100%"
1006          });
1007
1008          rail.css((rail.align) ? { right: 0 } : { left: 0 });
1009
1010          self.body.append(rail);
1011          if (self.railh) {
1012            railh.css({
1013              position: "fixed",
1014              left: 0,
1015              width: "100%"
1016            });
1017
1018            railh.css((railh.align) ? { bottom: 0 } : { top: 0 });
1019
1020            self.body.append(railh);
1021          }
1022        } else {
1023          if (self.ishwscroll) {
1024            if (self.win.css('position') == 'static') self.css(self.win, { 'position': 'relative' });
1025            var bd = (self.win[0].nodeName == 'HTML') ? self.body : self.win;
1026            $(bd).scrollTop(0).scrollLeft(0);  // fix rail position if content already scrolled
1027            if (self.zoom) {
1028              self.zoom.css({
1029                position: "absolute",
1030                top: 1,
1031                right: 0,
1032                "margin-right": rail.width + 4
1033              });
1034              bd.append(self.zoom);
1035            }
1036            rail.css({
1037              position: "absolute",
1038              top: 0
1039            });
1040            rail.css((rail.align) ? { right: 0 } : { left: 0 });
1041            bd.append(rail);
1042            if (railh) {
1043              railh.css({
1044                position: "absolute",
1045                left: 0,
1046                bottom: 0
1047              });
1048              railh.css((railh.align) ? { bottom: 0 } : { top: 0 });
1049              bd.append(railh);
1050            }
1051          } else {
1052            self.isfixed = (self.win.css("position") == "fixed");
1053            var rlpos = (self.isfixed) ? "fixed" : "absolute";
1054
1055            if (!self.isfixed) self.viewport = self.getViewport(self.win[0]);
1056            if (self.viewport) {
1057              self.body = self.viewport;
1058              if (!(/fixed|absolute/.test(self.viewport.css("position")))) self.css(self.viewport, {
1059                "position": "relative"
1060              });
1061            }
1062
1063            rail.css({
1064              position: rlpos
1065            });
1066            if (self.zoom) self.zoom.css({
1067              position: rlpos
1068            });
1069            self.updateScrollBar();
1070            self.body.append(rail);
1071            if (self.zoom) self.body.append(self.zoom);
1072            if (self.railh) {
1073              railh.css({
1074                position: rlpos
1075              });
1076              self.body.append(railh);
1077            }
1078          }
1079
1080          if (cap.isios) self.css(self.win, {
1081            '-webkit-tap-highlight-color': 'rgba(0,0,0,0)',
1082            '-webkit-touch-callout': 'none'
1083          }); // prevent grey layer on click
1084
1085          if (opt.disableoutline) {
1086            if (cap.isie) self.win.attr("hideFocus", "true"); // IE, prevent dotted rectangle on focused div
1087            if (cap.iswebkit) self.win.css('outline', 'none');  // Webkit outline
1088          }
1089
1090        }
1091
1092        if (opt.autohidemode === false) {
1093          self.autohidedom = false;
1094          self.rail.css({
1095            opacity: opt.cursoropacitymax
1096          });
1097          if (self.railh) self.railh.css({
1098            opacity: opt.cursoropacitymax
1099          });
1100        } else if ((opt.autohidemode === true) || (opt.autohidemode === "leave")) {
1101          self.autohidedom = $().add(self.rail);
1102          if (cap.isie8) self.autohidedom = self.autohidedom.add(self.cursor);
1103          if (self.railh) self.autohidedom = self.autohidedom.add(self.railh);
1104          if (self.railh && cap.isie8) self.autohidedom = self.autohidedom.add(self.cursorh);
1105        } else if (opt.autohidemode == "scroll") {
1106          self.autohidedom = $().add(self.rail);
1107          if (self.railh) self.autohidedom = self.autohidedom.add(self.railh);
1108        } else if (opt.autohidemode == "cursor") {
1109          self.autohidedom = $().add(self.cursor);
1110          if (self.railh) self.autohidedom = self.autohidedom.add(self.cursorh);
1111        } else if (opt.autohidemode == "hidden") {
1112          self.autohidedom = false;
1113          self.hide();
1114          self.railslocked = false;
1115        }
1116
1117        if (cap.cantouch || self.istouchcapable || opt.emulatetouch || cap.hasmstouch) {
1118
1119          self.scrollmom = new ScrollMomentumClass2D(self);
1120
1121          var delayedclick = null;
1122
1123          self.ontouchstart = function (e) {
1124
1125            if (self.locked) return false;
1126
1127            //if (e.pointerType && e.pointerType != 2 && e.pointerType != "touch") return false;
1128            if (e.pointerType && (e.pointerType === 'mouse' || e.pointerType === e.MSPOINTER_TYPE_MOUSE)) return false;  // need test on surface!!
1129
1130            self.hasmoving = false;
1131
1132            if (self.scrollmom.timer) {
1133              self.triggerScrollEnd();
1134              self.scrollmom.stop();
1135            }
1136
1137            if (!self.railslocked) {
1138              var tg = self.getTarget(e);
1139
1140              if (tg) {
1141                var skp = (/INPUT/i.test(tg.nodeName)) && (/range/i.test(tg.type));
1142                if (skp) return self.stopPropagation(e);
1143              }
1144
1145              var ismouse = (e.type === "mousedown");
1146
1147              if (!("clientX" in e) && ("changedTouches" in e)) {
1148                e.clientX = e.changedTouches[0].clientX;
1149                e.clientY = e.changedTouches[0].clientY;
1150              }
1151
1152              if (self.forcescreen) {
1153                var le = e;
1154                e = {
1155                  "original": (e.original) ? e.original : e
1156                };
1157                e.clientX = le.screenX;
1158                e.clientY = le.screenY;
1159              }
1160
1161              self.rail.drag = {
1162                x: e.clientX,
1163                y: e.clientY,
1164                sx: self.scroll.x,
1165                sy: self.scroll.y,
1166                st: self.getScrollTop(),
1167                sl: self.getScrollLeft(),
1168                pt: 2,
1169                dl: false,
1170                tg: tg
1171              };
1172
1173              if (self.ispage || !opt.directionlockdeadzone) {
1174
1175                self.rail.drag.dl = "f";
1176
1177              } else {
1178
1179                var view = {
1180                  w: $window.width(),
1181                  h: $window.height()
1182                };
1183
1184                var page = self.getContentSize();
1185
1186                var maxh = page.h - view.h;
1187                var maxw = page.w - view.w;
1188
1189                if (self.rail.scrollable && !self.railh.scrollable) self.rail.drag.ck = (maxh > 0) ? "v" : false;
1190                else if (!self.rail.scrollable && self.railh.scrollable) self.rail.drag.ck = (maxw > 0) ? "h" : false;
1191                else self.rail.drag.ck = false;
1192
1193              }
1194
1195              if (opt.emulatetouch && self.isiframe && cap.isie) {
1196                var wp = self.win.position();
1197                self.rail.drag.x += wp.left;
1198                self.rail.drag.y += wp.top;
1199              }
1200
1201              self.hasmoving = false;
1202              self.lastmouseup = false;
1203              self.scrollmom.reset(e.clientX, e.clientY);
1204
1205              if (tg&&ismouse) {
1206
1207                var ip = /INPUT|SELECT|BUTTON|TEXTAREA/i.test(tg.nodeName);
1208                if (!ip) {
1209                  if (cap.hasmousecapture) tg.setCapture();
1210                  if (opt.emulatetouch) {
1211                    if (tg.onclick && !(tg._onclick || false)) { // intercept DOM0 onclick event
1212                      tg._onclick = tg.onclick;
1213                      tg.onclick = function (e) {
1214                        if (self.hasmoving) return false;
1215                        tg._onclick.call(this, e);
1216                      };
1217                    }
1218                    return self.cancelEvent(e);
1219                  }
1220                  return self.stopPropagation(e);
1221                }
1222
1223                if (/SUBMIT|CANCEL|BUTTON/i.test($(tg).attr('type'))) {
1224                  self.preventclick = {
1225                    "tg": tg,
1226                    "click": false
1227                  };
1228                }
1229
1230              }
1231            }
1232
1233          };
1234
1235          self.ontouchend = function (e) {
1236
1237            if (!self.rail.drag) return true;
1238
1239            if (self.rail.drag.pt == 2) {
1240              //if (e.pointerType && e.pointerType != 2 && e.pointerType != "touch") return false;
1241              if (e.pointerType && (e.pointerType === 'mouse' || e.pointerType === e.MSPOINTER_TYPE_MOUSE)) return false;
1242
1243              self.rail.drag = false;
1244
1245              var ismouse = (e.type === "mouseup");
1246
1247              if (self.hasmoving) {
1248                self.scrollmom.doMomentum();
1249                self.lastmouseup = true;
1250                self.hideCursor();
1251                if (cap.hasmousecapture) _doc.releaseCapture();
1252                if (ismouse) return self.cancelEvent(e);
1253              }
1254
1255            }
1256            else if (self.rail.drag.pt == 1) {
1257              return self.onmouseup(e);
1258            }
1259
1260          };
1261
1262          var moveneedoffset = (opt.emulatetouch && self.isiframe && !cap.hasmousecapture);
1263
1264          var locktollerance = opt.directionlockdeadzone * 0.3 | 0;
1265
1266          self.ontouchmove = function (e, byiframe) {
1267
1268            if (!self.rail.drag) return true;
1269
1270            if (e.targetTouches && opt.preventmultitouchscrolling) {
1271              if (e.targetTouches.length > 1) return true; // multitouch
1272            }
1273
1274            //if (e.pointerType && e.pointerType != 2 && e.pointerType != "touch") return false;
1275            if (e.pointerType && (e.pointerType === 'mouse' || e.pointerType === e.MSPOINTER_TYPE_MOUSE)) return true;
1276
1277            if (self.rail.drag.pt == 2) {
1278
1279              if (("changedTouches" in e)) {
1280                e.clientX = e.changedTouches[0].clientX;
1281                e.clientY = e.changedTouches[0].clientY;
1282              }
1283
1284              var ofy, ofx;
1285              ofx = ofy = 0;
1286
1287              if (moveneedoffset && !byiframe) {
1288                var wp = self.win.position();
1289                ofx = -wp.left;
1290                ofy = -wp.top;
1291              }
1292
1293              var fy = e.clientY + ofy;
1294              var my = (fy - self.rail.drag.y);
1295              var fx = e.clientX + ofx;
1296              var mx = (fx - self.rail.drag.x);
1297
1298              var ny = self.rail.drag.st - my;
1299
1300              if (self.ishwscroll && opt.bouncescroll) {
1301                if (ny < 0) {
1302                  ny = Math.round(ny / 2);
1303                } else if (ny > self.page.maxh) {
1304                  ny = self.page.maxh + Math.round((ny - self.page.maxh) / 2);
1305                }
1306              } else {
1307                if (ny < 0) {
1308                  ny = 0;
1309                  fy = 0;
1310                }
1311                else if (ny > self.page.maxh) {
1312                  ny = self.page.maxh;
1313                  fy = 0;
1314                }
1315                if (fy === 0 && !self.hasmoving) {
1316                  if (!self.ispage) self.rail.drag = false;
1317                  return true;
1318                }
1319              }
1320
1321              var nx = self.getScrollLeft();
1322
1323              if (self.railh && self.railh.scrollable) {
1324                nx = (self.isrtlmode) ? mx - self.rail.drag.sl : self.rail.drag.sl - mx;
1325
1326                if (self.ishwscroll && opt.bouncescroll) {
1327                  if (nx < 0) {
1328                    nx = Math.round(nx / 2);
1329                  } else if (nx > self.page.maxw) {
1330                    nx = self.page.maxw + Math.round((nx - self.page.maxw) / 2);
1331                  }
1332                } else {
1333                  if (nx < 0) {
1334                    nx = 0;
1335                    fx = 0;
1336                  }
1337                  if (nx > self.page.maxw) {
1338                    nx = self.page.maxw;
1339                    fx = 0;
1340                  }
1341                }
1342
1343              }
1344
1345
1346              if (!self.hasmoving) {
1347
1348                if (self.rail.drag.y === e.clientY && self.rail.drag.x === e.clientX) return self.cancelEvent(e);  // prevent first useless move event 
1349
1350                var ay = Math.abs(my);
1351                var ax = Math.abs(mx);
1352                var dz = opt.directionlockdeadzone;
1353
1354                if (!self.rail.drag.ck) {
1355                  if (ay > dz && ax > dz) self.rail.drag.dl = "f";
1356                  else if (ay > dz) self.rail.drag.dl = (ax > locktollerance) ? "f" : "v";
1357                  else if (ax > dz) self.rail.drag.dl = (ay > locktollerance) ? "f" : "h";
1358                }
1359                else if (self.rail.drag.ck == "v") {
1360                  if (ax > dz && ay <= locktollerance) {
1361                    self.rail.drag = false;
1362                  }
1363                  else if (ay > dz) self.rail.drag.dl = "v";
1364
1365                }
1366                else if (self.rail.drag.ck == "h") {
1367
1368                  if (ay > dz && ax <= locktollerance) {
1369                    self.rail.drag = false;
1370                  }
1371                  else if (ax > dz) self.rail.drag.dl = "h";
1372
1373                }
1374
1375                if (!self.rail.drag.dl) return self.cancelEvent(e);
1376
1377                self.triggerScrollStart(e.clientX, e.clientY, 0, 0, 0);
1378                self.hasmoving = true;
1379              }
1380
1381              if (self.preventclick && !self.preventclick.click) {
1382                self.preventclick.click = self.preventclick.tg.onclick || false;
1383                self.preventclick.tg.onclick = self.onpreventclick;
1384              }
1385
1386              if (self.rail.drag.dl) {
1387                if (self.rail.drag.dl == "v") nx = self.rail.drag.sl;
1388                else if (self.rail.drag.dl == "h") ny = self.rail.drag.st;
1389              }
1390
1391              self.synched("touchmove", function () {
1392                if (self.rail.drag && (self.rail.drag.pt == 2)) {
1393                  if (self.prepareTransition) self.resetTransition();
1394                  if (self.rail.scrollable) self.setScrollTop(ny);
1395                  self.scrollmom.update(fx, fy);
1396                  if (self.railh && self.railh.scrollable) {
1397                    self.setScrollLeft(nx);
1398                    self.showCursor(ny, nx);
1399                  } else {
1400                    self.showCursor(ny);
1401                  }
1402                  if (cap.isie10) _doc.selection.clear();
1403                }
1404              });
1405
1406              return self.cancelEvent(e);
1407
1408            }
1409            else if (self.rail.drag.pt == 1) { // drag on cursor
1410              return self.onmousemove(e);
1411            }
1412
1413          };
1414
1415          self.ontouchstartCursor = function (e, hronly) {
1416            if (self.rail.drag && self.rail.drag.pt != 3) return;
1417            if (self.locked) return self.cancelEvent(e);
1418            self.cancelScroll();
1419            self.rail.drag = {
1420              x: e.touches[0].clientX,
1421              y: e.touches[0].clientY,
1422              sx: self.scroll.x,
1423              sy: self.scroll.y,
1424              pt: 3,
1425              hr: (!!hronly)
1426            };
1427            var tg = self.getTarget(e);
1428            if (!self.ispage && cap.hasmousecapture) tg.setCapture();
1429            if (self.isiframe && !cap.hasmousecapture) {
1430              self.saved.csspointerevents = self.doc.css("pointer-events");
1431              self.css(self.doc, { "pointer-events": "none" });
1432            }
1433            return self.cancelEvent(e);
1434          };
1435
1436          self.ontouchendCursor = function (e) {
1437            if (self.rail.drag) {
1438              if (cap.hasmousecapture) _doc.releaseCapture();
1439              if (self.isiframe && !cap.hasmousecapture) self.doc.css("pointer-events", self.saved.csspointerevents);
1440              if (self.rail.drag.pt != 3) return;
1441              self.rail.drag = false;
1442              return self.cancelEvent(e);
1443            }
1444          };
1445
1446          self.ontouchmoveCursor = function (e) {
1447            if (self.rail.drag) {
1448              if (self.rail.drag.pt != 3) return;
1449
1450              self.cursorfreezed = true;
1451
1452              if (self.rail.drag.hr) {
1453                self.scroll.x = self.rail.drag.sx + (e.touches[0].clientX - self.rail.drag.x);
1454                if (self.scroll.x < 0) self.scroll.x = 0;
1455                var mw = self.scrollvaluemaxw;
1456                if (self.scroll.x > mw) self.scroll.x = mw;
1457              } else {
1458                self.scroll.y = self.rail.drag.sy + (e.touches[0].clientY - self.rail.drag.y);
1459                if (self.scroll.y < 0) self.scroll.y = 0;
1460                var my = self.scrollvaluemax;
1461                if (self.scroll.y > my) self.scroll.y = my;
1462              }
1463
1464              self.synched('touchmove', function () {
1465                if (self.rail.drag && (self.rail.drag.pt == 3)) {
1466                  self.showCursor();
1467                  if (self.rail.drag.hr) self.doScrollLeft(Math.round(self.scroll.x * self.scrollratio.x), opt.cursordragspeed);
1468                  else self.doScrollTop(Math.round(self.scroll.y * self.scrollratio.y), opt.cursordragspeed);
1469                }
1470              });
1471
1472              return self.cancelEvent(e);
1473            }
1474
1475          };
1476
1477        }
1478
1479        self.onmousedown = function (e, hronly) {
1480          if (self.rail.drag && self.rail.drag.pt != 1) return;
1481          if (self.railslocked) return self.cancelEvent(e);
1482          self.cancelScroll();
1483          self.rail.drag = {
1484            x: e.clientX,
1485            y: e.clientY,
1486            sx: self.scroll.x,
1487            sy: self.scroll.y,
1488            pt: 1,
1489            hr: hronly || false
1490          };
1491          var tg = self.getTarget(e);
1492
1493          if (cap.hasmousecapture) tg.setCapture();
1494          if (self.isiframe && !cap.hasmousecapture) {
1495            self.saved.csspointerevents = self.doc.css("pointer-events");
1496            self.css(self.doc, {
1497              "pointer-events": "none"
1498            });
1499          }
1500          self.hasmoving = false;
1501          return self.cancelEvent(e);
1502        };
1503
1504        self.onmouseup = function (e) {
1505          if (self.rail.drag) {
1506            if (self.rail.drag.pt != 1) return true;
1507
1508            if (cap.hasmousecapture) _doc.releaseCapture();
1509            if (self.isiframe && !cap.hasmousecapture) self.doc.css("pointer-events", self.saved.csspointerevents);
1510            self.rail.drag = false;
1511            self.cursorfreezed = false;
1512            if (self.hasmoving) self.triggerScrollEnd();
1513            return self.cancelEvent(e);
1514          }
1515        };
1516
1517        self.onmousemove = function (e) {
1518          if (self.rail.drag) {
1519            if (self.rail.drag.pt !== 1) return;
1520
1521            if (cap.ischrome && e.which === 0) return self.onmouseup(e);
1522
1523            self.cursorfreezed = true;
1524
1525            if (!self.hasmoving) self.triggerScrollStart(e.clientX, e.clientY, 0, 0, 0);
1526
1527            self.hasmoving = true;
1528
1529            if (self.rail.drag.hr) {
1530              self.scroll.x = self.rail.drag.sx + (e.clientX - self.rail.drag.x);
1531              if (self.scroll.x < 0) self.scroll.x = 0;
1532              var mw = self.scrollvaluemaxw;
1533              if (self.scroll.x > mw) self.scroll.x = mw;
1534            } else {
1535              self.scroll.y = self.rail.drag.sy + (e.clientY - self.rail.drag.y);
1536              if (self.scroll.y < 0) self.scroll.y = 0;
1537              var my = self.scrollvaluemax;
1538              if (self.scroll.y > my) self.scroll.y = my;
1539            }
1540
1541            self.synched('mousemove', function () {
1542
1543              if (self.cursorfreezed) {
1544                self.showCursor();
1545
1546                if (self.rail.drag.hr) {
1547                  self.scrollLeft(Math.round(self.scroll.x * self.scrollratio.x));
1548                } else {
1549                  self.scrollTop(Math.round(self.scroll.y * self.scrollratio.y));
1550                }
1551
1552              }
1553            });
1554
1555            return self.cancelEvent(e);
1556          }
1557          else {
1558            self.checkarea = 0;
1559          }
1560        };
1561
1562        if (cap.cantouch || opt.emulatetouch) {
1563
1564          self.onpreventclick = function (e) {
1565            if (self.preventclick) {
1566              self.preventclick.tg.onclick = self.preventclick.click;
1567              self.preventclick = false;
1568              return self.cancelEvent(e);
1569            }
1570          };
1571
1572          self.onclick = (cap.isios) ? false : function (e) {  // it needs to check IE11 ???
1573            if (self.lastmouseup) {
1574              self.lastmouseup = false;
1575              return self.cancelEvent(e);
1576            } else {
1577              return true;
1578            }
1579          };
1580
1581          if (opt.grabcursorenabled && cap.cursorgrabvalue) {
1582            self.css((self.ispage) ? self.doc : self.win, {
1583              'cursor': cap.cursorgrabvalue
1584            });
1585            self.css(self.rail, {
1586              'cursor': cap.cursorgrabvalue
1587            });
1588          }
1589
1590        } else {
1591
1592          var checkSelectionScroll = function (e) {
1593            if (!self.selectiondrag) return;
1594
1595            if (e) {
1596              var ww = self.win.outerHeight();
1597              var df = (e.pageY - self.selectiondrag.top);
1598              if (df > 0 && df < ww) df = 0;
1599              if (df >= ww) df -= ww;
1600              self.selectiondrag.df = df;
1601            }
1602            if (self.selectiondrag.df === 0) return;
1603
1604            var rt = -(self.selectiondrag.df*2/6)|0;
1605            self.doScrollBy(rt);
1606
1607            self.debounced("doselectionscroll", function () {
1608              checkSelectionScroll();
1609            }, 50);
1610          };
1611
1612          if ("getSelection" in _doc) { // A grade - Major browsers
1613            self.hasTextSelected = function () {
1614              return (_doc.getSelection().rangeCount > 0);
1615            };
1616          } else if ("selection" in _doc) { //IE9-
1617            self.hasTextSelected = function () {
1618              return (_doc.selection.type != "None");
1619            };
1620          } else {
1621            self.hasTextSelected = function () { // no support
1622              return false;
1623            };
1624          }
1625
1626          self.onselectionstart = function (e) {
1627            //  More testing - severe chrome issues           
1628            /* 
1629                          if (!self.haswrapper&&(e.which&&e.which==2)) {  // fool browser to manage middle button scrolling
1630                            self.win.css({'overflow':'auto'});
1631                            setTimeout(function(){
1632                              self.win.css({'overflow':'hidden'});
1633                            },10);                
1634                            return true;
1635                          }            
1636            */
1637            if (self.ispage) return;
1638            self.selectiondrag = self.win.offset();
1639          };
1640
1641          self.onselectionend = function (e) {
1642            self.selectiondrag = false;
1643          };
1644          self.onselectiondrag = function (e) {
1645            if (!self.selectiondrag) return;
1646            if (self.hasTextSelected()) self.debounced("selectionscroll", function () {
1647              checkSelectionScroll(e);
1648            }, 250);
1649          };
1650        }
1651
1652        if (cap.hasw3ctouch) { //IE11+
1653          self.css((self.ispage) ? $("html") : self.win, { 'touch-action': 'none' });
1654          self.css(self.rail, {
1655            'touch-action': 'none'
1656          });
1657          self.css(self.cursor, {
1658            'touch-action': 'none'
1659          });
1660          self.bind(self.win, "pointerdown", self.ontouchstart);
1661          self.bind(_doc, "pointerup", self.ontouchend);
1662          self.delegate(_doc, "pointermove", self.ontouchmove);
1663        } else if (cap.hasmstouch) { //IE10
1664          self.css((self.ispage) ? $("html") : self.win, { '-ms-touch-action': 'none' });
1665          self.css(self.rail, {
1666            '-ms-touch-action': 'none'
1667          });
1668          self.css(self.cursor, {
1669            '-ms-touch-action': 'none'
1670          });
1671          self.bind(self.win, "MSPointerDown", self.ontouchstart);
1672          self.bind(_doc, "MSPointerUp", self.ontouchend);
1673          self.delegate(_doc, "MSPointerMove", self.ontouchmove);
1674          self.bind(self.cursor, "MSGestureHold", function (e) {
1675            e.preventDefault();
1676          });
1677          self.bind(self.cursor, "contextmenu", function (e) {
1678            e.preventDefault();
1679          });
1680        } else if (cap.cantouch) { // smartphones/touch devices
1681          self.bind(self.win, "touchstart", self.ontouchstart, false, true);
1682          self.bind(_doc, "touchend", self.ontouchend, false, true);
1683          self.bind(_doc, "touchcancel", self.ontouchend, false, true);
1684          self.delegate(_doc, "touchmove", self.ontouchmove, false, true);
1685        }
1686
1687        if (opt.emulatetouch) {
1688          self.bind(self.win, "mousedown", self.ontouchstart, false, true);
1689          self.bind(_doc, "mouseup", self.ontouchend, false, true);
1690          self.bind(_doc, "mousemove", self.ontouchmove, false, true);
1691        }
1692
1693        if (opt.cursordragontouch || (!cap.cantouch && !opt.emulatetouch)) {
1694
1695          self.rail.css({
1696            cursor: "default"
1697          });
1698          self.railh && self.railh.css({
1699            cursor: "default"
1700          });
1701
1702          self.jqbind(self.rail, "mouseenter", function () {
1703            if (!self.ispage && !self.win.is(":visible")) return false;
1704            if (self.canshowonmouseevent) self.showCursor();
1705            self.rail.active = true;
1706          });
1707          self.jqbind(self.rail, "mouseleave", function () {
1708            self.rail.active = false;
1709            if (!self.rail.drag) self.hideCursor();
1710          });
1711
1712          if (opt.sensitiverail) {
1713            self.bind(self.rail, "click", function (e) {
1714              self.doRailClick(e, false, false);
1715            });
1716            self.bind(self.rail, "dblclick", function (e) {
1717              self.doRailClick(e, true, false);
1718            });
1719            self.bind(self.cursor, "click", function (e) {
1720              self.cancelEvent(e);
1721            });
1722            self.bind(self.cursor, "dblclick", function (e) {
1723              self.cancelEvent(e);
1724            });
1725          }
1726
1727          if (self.railh) {
1728            self.jqbind(self.railh, "mouseenter", function () {
1729              if (!self.ispage && !self.win.is(":visible")) return false;
1730              if (self.canshowonmouseevent) self.showCursor();
1731              self.rail.active = true;
1732            });
1733            self.jqbind(self.railh, "mouseleave", function () {
1734              self.rail.active = false;
1735              if (!self.rail.drag) self.hideCursor();
1736            });
1737
1738            if (opt.sensitiverail) {
1739              self.bind(self.railh, "click", function (e) {
1740                self.doRailClick(e, false, true);
1741              });
1742              self.bind(self.railh, "dblclick", function (e) {
1743                self.doRailClick(e, true, true);
1744              });
1745              self.bind(self.cursorh, "click", function (e) {
1746                self.cancelEvent(e);
1747              });
1748              self.bind(self.cursorh, "dblclick", function (e) {
1749                self.cancelEvent(e);
1750              });
1751            }
1752
1753          }
1754
1755        }
1756
1757        if (opt.cursordragontouch && (this.istouchcapable || cap.cantouch)) {
1758          self.bind(self.cursor, "touchstart", self.ontouchstartCursor);
1759          self.bind(self.cursor, "touchmove", self.ontouchmoveCursor);
1760          self.bind(self.cursor, "touchend", self.ontouchendCursor);
1761          self.cursorh && self.bind(self.cursorh, "touchstart", function (e) {
1762            self.ontouchstartCursor(e, true);
1763          });
1764          self.cursorh && self.bind(self.cursorh, "touchmove", self.ontouchmoveCursor);
1765          self.cursorh && self.bind(self.cursorh, "touchend", self.ontouchendCursor);
1766        }
1767
1768//        if (!cap.cantouch && !opt.emulatetouch) {
1769        if (!opt.emulatetouch && !cap.isandroid && !cap.isios) {
1770
1771          self.bind((cap.hasmousecapture) ? self.win : _doc, "mouseup", self.onmouseup);
1772          self.bind(_doc, "mousemove", self.onmousemove);
1773          if (self.onclick) self.bind(_doc, "click", self.onclick);
1774
1775          self.bind(self.cursor, "mousedown", self.onmousedown);
1776          self.bind(self.cursor, "mouseup", self.onmouseup);
1777
1778          if (self.railh) {
1779            self.bind(self.cursorh, "mousedown", function (e) {
1780              self.onmousedown(e, true);
1781            });
1782            self.bind(self.cursorh, "mouseup", self.onmouseup);
1783          }
1784
1785          if (!self.ispage && opt.enablescrollonselection) {
1786            self.bind(self.win[0], "mousedown", self.onselectionstart);
1787            self.bind(_doc, "mouseup", self.onselectionend);
1788            self.bind(self.cursor, "mouseup", self.onselectionend);
1789            if (self.cursorh) self.bind(self.cursorh, "mouseup", self.onselectionend);
1790            self.bind(_doc, "mousemove", self.onselectiondrag);
1791          }
1792
1793          if (self.zoom) {
1794            self.jqbind(self.zoom, "mouseenter", function () {
1795              if (self.canshowonmouseevent) self.showCursor();
1796              self.rail.active = true;
1797            });
1798            self.jqbind(self.zoom, "mouseleave", function () {
1799              self.rail.active = false;
1800              if (!self.rail.drag) self.hideCursor();
1801            });
1802          }
1803
1804        } else {
1805
1806          self.bind((cap.hasmousecapture) ? self.win : _doc, "mouseup", self.ontouchend);
1807          if (self.onclick) self.bind(_doc, "click", self.onclick);
1808
1809          if (opt.cursordragontouch) {
1810            self.bind(self.cursor, "mousedown", self.onmousedown);
1811            self.bind(self.cursor, "mouseup", self.onmouseup);
1812            self.cursorh && self.bind(self.cursorh, "mousedown", function (e) {
1813              self.onmousedown(e, true);
1814            });
1815            self.cursorh && self.bind(self.cursorh, "mouseup", self.onmouseup);
1816          } else {
1817            self.bind(self.rail, "mousedown", function (e) { e.preventDefault(); });  // prevent text selection             
1818            self.railh && self.bind(self.railh, "mousedown", function (e) { e.preventDefault(); });
1819          }
1820
1821        }
1822
1823
1824        if (opt.enablemousewheel) {
1825          if (!self.isiframe) self.mousewheel((cap.isie && self.ispage) ? _doc : self.win, self.onmousewheel);
1826          self.mousewheel(self.rail, self.onmousewheel);
1827          if (self.railh) self.mousewheel(self.railh, self.onmousewheelhr);
1828        }
1829
1830        if (!self.ispage && !cap.cantouch && !(/HTML|^BODY/.test(self.win[0].nodeName))) {
1831          if (!self.win.attr("tabindex")) self.win.attr({
1832            "tabindex": ++tabindexcounter
1833          });
1834
1835          self.bind(self.win, "focus", function (e) {  // better using native events
1836            domfocus = (self.getTarget(e)).id || self.getTarget(e) || false;
1837            self.hasfocus = true;
1838            if (self.canshowonmouseevent) self.noticeCursor();
1839          });
1840          self.bind(self.win, "blur", function (e) {  // *
1841            domfocus = false;
1842            self.hasfocus = false;
1843          });
1844
1845          self.bind(self.win, "mouseenter", function (e) {   // *
1846            mousefocus = (self.getTarget(e)).id || self.getTarget(e) || false;
1847            self.hasmousefocus = true;
1848            if (self.canshowonmouseevent) self.noticeCursor();
1849          });
1850          self.bind(self.win, "mouseleave", function (e) {   // *       
1851            mousefocus = false;
1852            self.hasmousefocus = false;
1853            if (!self.rail.drag) self.hideCursor();
1854          });
1855
1856        }
1857
1858
1859        //Thanks to http://www.quirksmode.org !!
1860        self.onkeypress = function (e) {
1861          if (self.railslocked && self.page.maxh === 0) return true;
1862
1863          e = e || _win.event;
1864          var tg = self.getTarget(e);
1865          if (tg && /INPUT|TEXTAREA|SELECT|OPTION/.test(tg.nodeName)) {
1866            var tp = tg.getAttribute('type') || tg.type || false;
1867            if ((!tp) || !(/submit|button|cancel/i.tp)) return true;
1868          }
1869
1870          if ($(tg).attr('contenteditable')) return true;
1871
1872          if (self.hasfocus || (self.hasmousefocus && !domfocus) || (self.ispage && !domfocus && !mousefocus)) {
1873            var key = e.keyCode;
1874
1875            if (self.railslocked && key != 27) return self.cancelEvent(e);
1876
1877            var ctrl = e.ctrlKey || false;
1878            var shift = e.shiftKey || false;
1879
1880            var ret = false;
1881            switch (key) {
1882              case 38:
1883              case 63233: //safari
1884                self.doScrollBy(24 * 3);
1885                ret = true;
1886                break;
1887              case 40:
1888              case 63235: //safari
1889                self.doScrollBy(-24 * 3);
1890                ret = true;
1891                break;
1892              case 37:
1893              case 63232: //safari
1894                if (self.railh) {
1895                  (ctrl) ? self.doScrollLeft(0) : self.doScrollLeftBy(24 * 3);
1896                  ret = true;
1897                }
1898                break;
1899              case 39:
1900              case 63234: //safari
1901                if (self.railh) {
1902                  (ctrl) ? self.doScrollLeft(self.page.maxw) : self.doScrollLeftBy(-24 * 3);
1903                  ret = true;
1904                }
1905                break;
1906              case 33:
1907              case 63276: // safari
1908                self.doScrollBy(self.view.h);
1909                ret = true;
1910                break;
1911              case 34:
1912              case 63277: // safari
1913                self.doScrollBy(-self.view.h);
1914                ret = true;
1915                break;
1916              case 36:
1917              case 63273: // safari                
1918                (self.railh && ctrl) ? self.doScrollPos(0, 0) : self.doScrollTo(0);
1919                ret = true;
1920                break;
1921              case 35:
1922              case 63275: // safari
1923                (self.railh && ctrl) ? self.doScrollPos(self.page.maxw, self.page.maxh) : self.doScrollTo(self.page.maxh);
1924                ret = true;
1925                break;
1926              case 32:
1927                if (opt.spacebarenabled) {
1928                  (shift) ? self.doScrollBy(self.view.h) : self.doScrollBy(-self.view.h);
1929                  ret = true;
1930                }
1931                break;
1932              case 27: // ESC
1933                if (self.zoomactive) {
1934                  self.doZoom();
1935                  ret = true;
1936                }
1937                break;
1938            }
1939            if (ret) return self.cancelEvent(e);
1940          }
1941        };
1942
1943        if (opt.enablekeyboard) self.bind(_doc, (cap.isopera && !cap.isopera12) ? "keypress" : "keydown", self.onkeypress);
1944
1945        self.bind(_doc, "keydown", function (e) {
1946          var ctrl = e.ctrlKey || false;
1947          if (ctrl) self.wheelprevented = true;
1948        });
1949        self.bind(_doc, "keyup", function (e) {
1950          var ctrl = e.ctrlKey || false;
1951          if (!ctrl) self.wheelprevented = false;
1952        });
1953        self.bind(_win, "blur", function (e) {
1954          self.wheelprevented = false;
1955        });
1956
1957        self.bind(_win, 'resize', self.onscreenresize);
1958        self.bind(_win, 'orientationchange', self.onscreenresize);
1959
1960        self.bind(_win, "load", self.lazyResize);
1961
1962        if (cap.ischrome && !self.ispage && !self.haswrapper) { //chrome void scrollbar bug - it persists in version 26
1963          var tmp = self.win.attr("style");
1964          var ww = parseFloat(self.win.css("width")) + 1;
1965          self.win.css('width', ww);
1966          self.synched("chromefix", function () {
1967            self.win.attr("style", tmp);
1968          });
1969        }
1970
1971
1972        // Trying a cross-browser implementation - good luck!
1973
1974        self.onAttributeChange = function (e) {
1975          self.lazyResize(self.isieold ? 250 : 30);
1976        };
1977
1978        if (opt.enableobserver) {
1979
1980          if ((!self.isie11) && (ClsMutationObserver !== false)) {  // IE11 crashes  #568
1981            self.observerbody = new ClsMutationObserver(function (mutations) {
1982              mutations.forEach(function (mut) {
1983                if (mut.type == "attributes") {
1984                  return ($body.hasClass("modal-open") && $body.hasClass("modal-dialog") && !$.contains($('.modal-dialog')[0], self.doc[0])) ? self.hide() : self.show();  // Support for Bootstrap modal; Added check if the nice scroll element is inside a modal
1985                }
1986              });
1987              if (self.me.clientWidth != self.page.width || self.me.clientHeight != self.page.height) return self.lazyResize(30);
1988            });
1989            self.observerbody.observe(_doc.body, {
1990              childList: true,
1991              subtree: true,
1992              characterData: false,
1993              attributes: true,
1994              attributeFilter: ['class']
1995            });
1996          }
1997
1998          if (!self.ispage && !self.haswrapper) {
1999
2000            var _dom = self.win[0];
2001
2002            // redesigned MutationObserver for Chrome18+/Firefox14+/iOS6+ with support for: remove div, add/remove content
2003            if (ClsMutationObserver !== false) {
2004              self.observer = new ClsMutationObserver(function (mutations) {
2005                mutations.forEach(self.onAttributeChange);
2006              });
2007              self.observer.observe(_dom, {
2008                childList: true,
2009                characterData: false,
2010                attributes: true,
2011                subtree: false
2012              });
2013              self.observerremover = new ClsMutationObserver(function (mutations) {
2014                mutations.forEach(function (mo) {
2015                  if (mo.removedNodes.length > 0) {
2016                    for (var dd in mo.removedNodes) {
2017                      if (!!self && (mo.removedNodes[dd] === _dom)) return self.remove();
2018                    }
2019                  }
2020                });
2021              });
2022              self.observerremover.observe(_dom.parentNode, {
2023                childList: true,
2024                characterData: false,
2025                attributes: false,
2026                subtree: false
2027              });
2028            } else {
2029              self.bind(_dom, (cap.isie && !cap.isie9) ? "propertychange" : "DOMAttrModified", self.onAttributeChange);
2030              if (cap.isie9) _dom.attachEvent("onpropertychange", self.onAttributeChange); //IE9 DOMAttrModified bug
2031              self.bind(_dom, "DOMNodeRemoved", function (e) {
2032                if (e.target === _dom) self.remove();
2033              });
2034            }
2035          }
2036
2037        }
2038
2039        //
2040
2041        if (!self.ispage && opt.boxzoom) self.bind(_win, "resize", self.resizeZoom);
2042        if (self.istextarea) {
2043          self.bind(self.win, "keydown", self.lazyResize);
2044          self.bind(self.win, "mouseup", self.lazyResize);
2045        }
2046
2047        self.lazyResize(30);
2048
2049      }
2050
2051      if (this.doc[0].nodeName == 'IFRAME') {
2052        var oniframeload = function () {
2053          self.iframexd = false;
2054          var doc;
2055          try {
2056            doc = 'contentDocument' in this ? this.contentDocument : this.contentWindow._doc;
2057            var a = doc.domain;
2058          } catch (e) {
2059            self.iframexd = true;
2060            doc = false;
2061          }
2062
2063          if (self.iframexd) {
2064            if ("console" in _win) console.log('NiceScroll error: policy restriced iframe');
2065            return true; //cross-domain - I can't manage this        
2066          }
2067
2068          self.forcescreen = true;
2069
2070          if (self.isiframe) {
2071            self.iframe = {
2072              "doc": $(doc),
2073              "html": self.doc.contents().find('html')[0],
2074              "body": self.doc.contents().find('body')[0]
2075            };
2076            self.getContentSize = function () {
2077              return {
2078                w: Math.max(self.iframe.html.scrollWidth, self.iframe.body.scrollWidth),
2079                h: Math.max(self.iframe.html.scrollHeight, self.iframe.body.scrollHeight)
2080              };
2081            };
2082            self.docscroll = $(self.iframe.body);
2083          }
2084
2085          if (!cap.isios && opt.iframeautoresize && !self.isiframe) {
2086            self.win.scrollTop(0); // reset position
2087            self.doc.height(""); //reset height to fix browser bug
2088            var hh = Math.max(doc.getElementsByTagName('html')[0].scrollHeight, doc.body.scrollHeight);
2089            self.doc.height(hh);
2090          }
2091          self.lazyResize(30);
2092
2093          self.css($(self.iframe.body), _scrollyhidden);
2094
2095          if (cap.isios && self.haswrapper) {
2096            self.css($(doc.body), {
2097              '-webkit-transform': 'translate3d(0,0,0)'
2098            }); // avoid iFrame content clipping - thanks to http://blog.derraab.com/2012/04/02/avoid-iframe-content-clipping-with-css-transform-on-ios/
2099          }
2100
2101          if ('contentWindow' in this) {
2102            self.bind(this.contentWindow, "scroll", self.onscroll); //IE8 & minor
2103          } else {
2104            self.bind(doc, "scroll", self.onscroll);
2105          }
2106
2107          if (opt.enablemousewheel) {
2108            self.mousewheel(doc, self.onmousewheel);
2109          }
2110
2111          if (opt.enablekeyboard) self.bind(doc, (cap.isopera) ? "keypress" : "keydown", self.onkeypress);
2112
2113          if (cap.cantouch) {
2114            self.bind(doc, "touchstart", self.ontouchstart);
2115            self.bind(doc, "touchmove", self.ontouchmove);
2116          }
2117          else if (opt.emulatetouch) {
2118            self.bind(doc, "mousedown", self.ontouchstart);
2119            self.bind(doc, "mousemove", function (e) {
2120              return self.ontouchmove(e, true);
2121            });
2122            if (opt.grabcursorenabled && cap.cursorgrabvalue) self.css($(doc.body), {
2123              'cursor': cap.cursorgrabvalue
2124            });
2125          }
2126
2127          self.bind(doc, "mouseup", self.ontouchend);
2128
2129          if (self.zoom) {
2130            if (opt.dblclickzoom) self.bind(doc, 'dblclick', self.doZoom);
2131            if (self.ongesturezoom) self.bind(doc, "gestureend", self.ongesturezoom);
2132          }
2133        };
2134
2135        if (this.doc[0].readyState && this.doc[0].readyState === "complete") {
2136          setTimeout(function () {
2137            oniframeload.call(self.doc[0], false);
2138          }, 500);
2139        }
2140        self.bind(this.doc, "load", oniframeload);
2141
2142      }
2143
2144    };
2145
2146    this.showCursor = function (py, px) {
2147      if (self.cursortimeout) {
2148        clearTimeout(self.cursortimeout);
2149        self.cursortimeout = 0;
2150      }
2151      if (!self.rail) return;
2152      if (self.autohidedom) {
2153        self.autohidedom.stop().css({
2154          opacity: opt.cursoropacitymax
2155        });
2156        self.cursoractive = true;
2157      }
2158
2159      if (!self.rail.drag || self.rail.drag.pt != 1) {
2160        if (py !== undefined && py !== false) {
2161          self.scroll.y = (py / self.scrollratio.y) | 0;
2162        }
2163        if (px !== undefined) {
2164          self.scroll.x = (px / self.scrollratio.x) | 0;
2165        }
2166      }
2167
2168      self.cursor.css({
2169        height: self.cursorheight,
2170        top: self.scroll.y
2171      });
2172      if (self.cursorh) {
2173        var lx = (self.hasreversehr) ? self.scrollvaluemaxw - self.scroll.x : self.scroll.x;
2174        self.cursorh.css({
2175          width: self.cursorwidth,
2176          left: (!self.rail.align && self.rail.visibility) ? lx + self.rail.width : lx
2177        });
2178        self.cursoractive = true;
2179      }
2180
2181      if (self.zoom) self.zoom.stop().css({
2182        opacity: opt.cursoropacitymax
2183      });
2184    };
2185
2186    this.hideCursor = function (tm) {
2187      if (self.cursortimeout) return;
2188      if (!self.rail) return;
2189      if (!self.autohidedom) return;
2190
2191      if (self.hasmousefocus && opt.autohidemode === "leave") return;
2192      self.cursortimeout = setTimeout(function () {
2193        if (!self.rail.active || !self.showonmouseevent) {
2194          self.autohidedom.stop().animate({
2195            opacity: opt.cursoropacitymin
2196          }, 100);
2197          if (self.zoom) self.zoom.stop().animate({
2198            opacity: opt.cursoropacitymin
2199          },100);
2200          self.cursoractive = false;
2201        }
2202        self.cursortimeout = 0;
2203      }, tm || 50);
2204    };
2205
2206    this.noticeCursor = function (tm, py, px) {
2207      self.showCursor(py, px);
2208      if (!self.rail.active) self.hideCursor(tm);
2209    };
2210
2211    this.getContentSize =
2212      (self.ispage) ?
2213        function () {
2214          return {
2215            w: Math.max(_doc.body.scrollWidth, _doc.documentElement.scrollWidth),
2216            h: Math.max(_doc.body.scrollHeight, _doc.documentElement.scrollHeight)
2217          };
2218        } : (self.haswrapper) ?
2219          function () {
2220            return {
2221              w: self.doc[0].offsetWidth,
2222              h: self.doc[0].offsetHeight
2223            };
2224          } : function () {
2225            return {
2226              w: self.docscroll[0].scrollWidth,
2227              h: self.docscroll[0].scrollHeight
2228            };
2229          };
2230
2231    this.onResize = function (e, page) {
2232
2233      if (!self || !self.win) return false;
2234
2235      var premaxh = self.page.maxh,
2236          premaxw = self.page.maxw,
2237          previewh = self.view.h,
2238          previeww = self.view.w;
2239
2240      self.view = {
2241        w: (self.ispage) ? self.win.width() : self.win[0].clientWidth,
2242        h: (self.ispage) ? self.win.height() : self.win[0].clientHeight
2243      };
2244
2245      self.page = (page) ? page : self.getContentSize();
2246
2247      self.page.maxh = Math.max(0, self.page.h - self.view.h);
2248      self.page.maxw = Math.max(0, self.page.w - self.view.w);
2249
2250      if ((self.page.maxh == premaxh) && (self.page.maxw == premaxw) && (self.view.w == previeww) && (self.view.h == previewh)) {
2251        // test position        
2252        if (!self.ispage) {
2253          var pos = self.win.offset();
2254          if (self.lastposition) {
2255            var lst = self.lastposition;
2256            if ((lst.top == pos.top) && (lst.left == pos.left)) return self; //nothing to do            
2257          }
2258          self.lastposition = pos;
2259        } else {
2260          return self; //nothing to do
2261        }
2262      }
2263
2264      if (self.page.maxh === 0) {
2265        self.hideRail();
2266        self.scrollvaluemax = 0;
2267        self.scroll.y = 0;
2268        self.scrollratio.y = 0;
2269        self.cursorheight = 0;
2270        self.setScrollTop(0);
2271        if (self.rail) self.rail.scrollable = false;
2272      } else {
2273        self.page.maxh -= (opt.railpadding.top + opt.railpadding.bottom);
2274        self.rail.scrollable = true;
2275      }
2276
2277      if (self.page.maxw === 0) {
2278        self.hideRailHr();
2279        self.scrollvaluemaxw = 0;
2280        self.scroll.x = 0;
2281        self.scrollratio.x = 0;
2282        self.cursorwidth = 0;
2283        self.setScrollLeft(0);
2284        if (self.railh) {
2285          self.railh.scrollable = false;
2286        }
2287      } else {
2288        self.page.maxw -= (opt.railpadding.left + opt.railpadding.right);
2289        if (self.railh) self.railh.scrollable = (opt.horizrailenabled);
2290      }
2291
2292      self.railslocked = (self.locked) || ((self.page.maxh === 0) && (self.page.maxw === 0));
2293      if (self.railslocked) {
2294        if (!self.ispage) self.updateScrollBar(self.view);
2295        return false;
2296      }
2297
2298      if (!self.hidden) {
2299        if (!self.rail.visibility) self.showRail();
2300        if (self.railh && !self.railh.visibility) self.showRailHr();
2301      }
2302
2303      if (self.istextarea && self.win.css('resize') && self.win.css('resize') != 'none') self.view.h -= 20;
2304
2305      self.cursorheight = Math.min(self.view.h, Math.round(self.view.h * (self.view.h / self.page.h)));
2306      self.cursorheight = (opt.cursorfixedheight) ? opt.cursorfixedheight : Math.max(opt.cursorminheight, self.cursorheight);
2307
2308      self.cursorwidth = Math.min(self.view.w, Math.round(self.view.w * (self.view.w / self.page.w)));
2309      self.cursorwidth = (opt.cursorfixedheight) ? opt.cursorfixedheight : Math.max(opt.cursorminheight, self.cursorwidth);
2310
2311      self.scrollvaluemax = self.view.h - self.cursorheight - (opt.railpadding.top + opt.railpadding.bottom);
2312      if (!self.hasborderbox) self.scrollvaluemax -= self.cursor[0].offsetHeight - self.cursor[0].clientHeight;
2313
2314      if (self.railh) {
2315        self.railh.width = (self.page.maxh > 0) ? (self.view.w - self.rail.width) : self.view.w;
2316        self.scrollvaluemaxw = self.railh.width - self.cursorwidth - (opt.railpadding.left + opt.railpadding.right);
2317      }
2318
2319      if (!self.ispage) self.updateScrollBar(self.view);
2320
2321      self.scrollratio = {
2322        x: (self.page.maxw / self.scrollvaluemaxw),
2323        y: (self.page.maxh / self.scrollvaluemax)
2324      };
2325
2326      var sy = self.getScrollTop();
2327      if (sy > self.page.maxh) {
2328        self.doScrollTop(self.page.maxh);
2329      } else {
2330        self.scroll.y = (self.getScrollTop() / self.scrollratio.y) | 0;
2331        self.scroll.x = (self.getScrollLeft() / self.scrollratio.x) | 0;
2332        if (self.cursoractive) self.noticeCursor();
2333      }
2334
2335      if (self.scroll.y && (self.getScrollTop() === 0)) self.doScrollTo((self.scroll.y * self.scrollratio.y)|0);
2336
2337      return self;
2338    };
2339
2340    this.resize = self.onResize;
2341
2342    var hlazyresize = 0;
2343
2344    this.onscreenresize = function(e) {
2345      clearTimeout(hlazyresize);
2346
2347      var hiderails = (!self.ispage && !self.haswrapper);
2348      if (hiderails) self.hideRails();
2349
2350      hlazyresize = setTimeout(function () {
2351        if (self) {
2352          if (hiderails) self.showRails();
2353          self.resize();
2354        }
2355        hlazyresize=0;
2356      }, 120);
2357    };
2358
2359    this.lazyResize = function (tm) { // event debounce
2360
2361      clearTimeout(hlazyresize);
2362
2363      tm = isNaN(tm) ? 240 : tm;
2364
2365      hlazyresize = setTimeout(function () {
2366        self && self.resize();
2367        hlazyresize=0;
2368      }, tm);
2369
2370      return self;
2371
2372    };
2373
2374    // derived by MDN https://developer.mozilla.org/en-US/docs/DOM/Mozilla_event_reference/wheel
2375    function _modernWheelEvent(dom, name, fn, bubble) {
2376      self._bind(dom, name, function (e) {
2377        e = e || _win.event;
2378        var event = {
2379          original: e,
2380          target: e.target || e.srcElement,
2381          type: "wheel",
2382          deltaMode: e.type == "MozMousePixelScroll" ? 0 : 1,
2383          deltaX: 0,
2384          deltaZ: 0,
2385          preventDefault: function () {
2386            e.preventDefault ? e.preventDefault() : e.returnValue = false;
2387            return false;
2388          },
2389          stopImmediatePropagation: function () {
2390            (e.stopImmediatePropagation) ? e.stopImmediatePropagation() : e.cancelBubble = true;
2391          }
2392        };
2393
2394        if (name == "mousewheel") {
2395          e.wheelDeltaX && (event.deltaX = -1 / 40 * e.wheelDeltaX);
2396          e.wheelDeltaY && (event.deltaY = -1 / 40 * e.wheelDeltaY);
2397          !event.deltaY && !event.deltaX && (event.deltaY = -1 / 40 * e.wheelDelta);
2398        } else {
2399          event.deltaY = e.detail;
2400        }
2401
2402        return fn.call(dom, event);
2403      }, bubble);
2404    }
2405
2406
2407
2408    this.jqbind = function (dom, name, fn) { // use jquery bind for non-native events (mouseenter/mouseleave)
2409      self.events.push({
2410        e: dom,
2411        n: name,
2412        f: fn,
2413        q: true
2414      });
2415      $(dom).on(name, fn);
2416    };
2417
2418    this.mousewheel = function (dom, fn, bubble) { // bind mousewheel
2419      var el = ("jquery" in dom) ? dom[0] : dom;
2420      if ("onwheel" in _doc.createElement("div")) { // Modern browsers support "wheel"
2421        self._bind(el, "wheel", fn, bubble || false);
2422      } else {
2423        var wname = (_doc.onmousewheel !== undefined) ? "mousewheel" : "DOMMouseScroll"; // older Webkit+IE support or older Firefox          
2424        _modernWheelEvent(el, wname, fn, bubble || false);
2425        if (wname == "DOMMouseScroll") _modernWheelEvent(el, "MozMousePixelScroll", fn, bubble || false); // Firefox legacy
2426      }
2427    };
2428
2429    var passiveSupported = false;
2430
2431    if (cap.haseventlistener) {  // W3C standard event model
2432
2433      // thanks to https://developer.mozilla.org/en-US/docs/Web/API/EventTarget/addEventListener
2434      try { var options = Object.defineProperty({}, "passive", { get: function () { passiveSupported = !0; } }); _win.addEventListener("test", null, options); } catch (err) { }
2435
2436      this.stopPropagation = function (e) {
2437        if (!e) return false;
2438        e = (e.original) ? e.original : e;
2439        e.stopPropagation();
2440        return false;
2441      };
2442
2443      this.cancelEvent = function(e) {
2444        if (e.cancelable) e.preventDefault();
2445        e.stopImmediatePropagation();
2446        if (e.preventManipulation) e.preventManipulation();  // IE10+
2447        return false;
2448      };      
2449
2450    } else {
2451
2452      // inspired from https://gist.github.com/jonathantneal/2415137      
2453
2454      Event.prototype.preventDefault = function () {
2455        this.returnValue = false;
2456      };
2457
2458      Event.prototype.stopPropagation = function () {
2459        this.cancelBubble = true;
2460      };
2461
2462      _win.constructor.prototype.addEventListener = _doc.constructor.prototype.addEventListener = Element.prototype.addEventListener = function (type, listener, useCapture) {
2463        this.attachEvent("on" + type, listener);
2464      };
2465      _win.constructor.prototype.removeEventListener = _doc.constructor.prototype.removeEventListener = Element.prototype.removeEventListener = function (type, listener, useCapture) {
2466        this.detachEvent("on" + type, listener);
2467      };
2468
2469      // Thanks to http://www.switchonthecode.com !!
2470      this.cancelEvent = function (e) {
2471        e = e || _win.event;
2472        if (e) {          
2473          e.cancelBubble = true;
2474          e.cancel = true;
2475          e.returnValue = false;
2476        }  
2477        return false;
2478      };
2479
2480      this.stopPropagation = function (e) {
2481        e = e || _win.event;
2482        if (e) e.cancelBubble = true;
2483        return false;
2484      };
2485
2486    }
2487
2488    this.delegate = function (dom, name, fn, bubble, active) {
2489
2490      var de = delegatevents[name] || false;
2491
2492      if (!de) {
2493
2494        de = {
2495          a: [],
2496          l: [],
2497          f: function (e) {
2498            var lst = de.l, l = lst.length - 1;
2499            var r = false;
2500            for (var a = l; a >= 0; a--) {
2501              r = lst[a].call(e.target, e);
2502              if (r === false) return false;
2503            }
2504            return r;
2505          }
2506        };
2507
2508        self.bind(dom, name, de.f, bubble, active);
2509
2510        delegatevents[name] = de;
2511
2512      }
2513
2514      if (self.ispage) {
2515        de.a = [self.id].concat(de.a);
2516        de.l = [fn].concat(de.l);
2517      } else {
2518        de.a.push(self.id);
2519        de.l.push(fn);        
2520      }
2521
2522    };
2523
2524    this.undelegate = function (dom, name, fn, bubble, active) {
2525      var de = delegatevents[name]||false;
2526      if (de&&de.l) {  // quick fix #683
2527        for (var a=0,l=de.l.length;a<l;a++) {
2528          if (de.a[a] === self.id) {
2529            de.a.splice(a);
2530            de.l.splice(a);
2531            if (de.a.length===0) {
2532              self._unbind(dom,name,de.l.f);
2533              delegatevents[name] = null;
2534            }
2535          }
2536        }
2537      }
2538    };
2539
2540    this.bind = function (dom, name, fn, bubble, active) {
2541      var el = ("jquery" in dom) ? dom[0] : dom;
2542      self._bind(el, name, fn, bubble || false, active || false);
2543    };
2544
2545    this._bind = function (el, name, fn, bubble, active) { // primitive bind
2546
2547      self.events.push({
2548        e: el,
2549        n: name,
2550        f: fn,
2551        b: bubble,
2552        q: false
2553      });
2554
2555      (passiveSupported && active) ? el.addEventListener(name, fn, { passive: false, capture: bubble }) : el.addEventListener(name, fn, bubble || false);
2556    };
2557
2558    this._unbind = function (el, name, fn, bub) { // primitive unbind
2559      if (delegatevents[name]) self.undelegate(el, name, fn, bub);
2560      else el.removeEventListener(name, fn, bub);
2561    };
2562
2563    this.unbindAll = function () {
2564      for (var a = 0; a < self.events.length; a++) {
2565        var r = self.events[a];
2566        (r.q) ? r.e.unbind(r.n, r.f) : self._unbind(r.e, r.n, r.f, r.b);
2567      }
2568    };
2569
2570    this.showRails = function () {
2571      return self.showRail().showRailHr();
2572    };
2573
2574    this.showRail = function () {
2575      if ((self.page.maxh !== 0) && (self.ispage || self.win.css('display') != 'none')) {
2576        //self.visibility = true;
2577        self.rail.visibility = true;
2578        self.rail.css('display', 'block');
2579      }
2580      return self;
2581    };
2582
2583    this.showRailHr = function () {
2584      if (self.railh) {
2585        if ((self.page.maxw !== 0) && (self.ispage || self.win.css('display') != 'none')) {
2586          self.railh.visibility = true;
2587          self.railh.css('display', 'block');
2588        }
2589      }
2590      return self;
2591    };
2592
2593    this.hideRails = function () {
2594      return self.hideRail().hideRailHr();
2595    };
2596
2597    this.hideRail = function () {
2598      //self.visibility = false;
2599      self.rail.visibility = false;
2600      self.rail.css('display', 'none');
2601      return self;
2602    };
2603
2604    this.hideRailHr = function () {
2605      if (self.railh) {
2606        self.railh.visibility = false;
2607        self.railh.css('display', 'none');
2608      }
2609      return self;
2610    };
2611
2612    this.show = function () {
2613      self.hidden = false;
2614      self.railslocked = false;
2615      return self.showRails();
2616    };
2617
2618    this.hide = function () {
2619      self.hidden = true;
2620      self.railslocked = true;
2621      return self.hideRails();
2622    };
2623
2624    this.toggle = function () {
2625      return (self.hidden) ? self.show() : self.hide();
2626    };
2627
2628    this.remove = function () {
2629      self.stop();
2630      if (self.cursortimeout) clearTimeout(self.cursortimeout);
2631      for (var n in self.delaylist) if (self.delaylist[n]) clearAnimationFrame(self.delaylist[n].h);
2632      self.doZoomOut();
2633      self.unbindAll();
2634
2635      if (cap.isie9) self.win[0].detachEvent("onpropertychange", self.onAttributeChange); //IE9 DOMAttrModified bug
2636
2637      if (self.observer !== false) self.observer.disconnect();
2638      if (self.observerremover !== false) self.observerremover.disconnect();
2639      if (self.observerbody !== false) self.observerbody.disconnect();
2640
2641      self.events = null;
2642
2643      if (self.cursor) {
2644        self.cursor.remove();
2645      }
2646      if (self.cursorh) {
2647        self.cursorh.remove();
2648      }
2649      if (self.rail) {
2650        self.rail.remove();
2651      }
2652      if (self.railh) {
2653        self.railh.remove();
2654      }
2655      if (self.zoom) {
2656        self.zoom.remove();
2657      }
2658      for (var a = 0; a < self.saved.css.length; a++) {
2659        var d = self.saved.css[a];
2660        d[0].css(d[1], (d[2] === undefined) ? '' : d[2]);
2661      }
2662      self.saved = false;
2663      self.me.data('__nicescroll', ''); //erase all traces
2664
2665      // memory leak fixed by GianlucaGuarini - thanks a lot!
2666      // remove the current nicescroll from the $.nicescroll array & normalize array
2667      var lst = $.nicescroll;
2668      lst.each(function (i) {
2669        if (!this) return;
2670        if (this.id === self.id) {
2671          delete lst[i];
2672          for (var b = ++i; b < lst.length; b++ , i++) lst[i] = lst[b];
2673          lst.length--;
2674          if (lst.length) delete lst[lst.length];
2675        }
2676      });
2677
2678      for (var i in self) {
2679        self[i] = null;
2680        delete self[i];
2681      }
2682
2683      self = null;
2684
2685    };
2686
2687    this.scrollstart = function (fn) {
2688      this.onscrollstart = fn;
2689      return self;
2690    };
2691    this.scrollend = function (fn) {
2692      this.onscrollend = fn;
2693      return self;
2694    };
2695    this.scrollcancel = function (fn) {
2696      this.onscrollcancel = fn;
2697      return self;
2698    };
2699
2700    this.zoomin = function (fn) {
2701      this.onzoomin = fn;
2702      return self;
2703    };
2704    this.zoomout = function (fn) {
2705      this.onzoomout = fn;
2706      return self;
2707    };
2708
2709    this.isScrollable = function (e) {
2710      var dom = (e.target) ? e.target : e;
2711      if (dom.nodeName == 'OPTION') return true;
2712      while (dom && (dom.nodeType == 1) && (dom !== this.me[0]) && !(/^BODY|HTML/.test(dom.nodeName))) {
2713        var dd = $(dom);
2714        var ov = dd.css('overflowY') || dd.css('overflowX') || dd.css('overflow') || '';
2715        if (/scroll|auto/.test(ov)) return (dom.clientHeight != dom.scrollHeight);
2716        dom = (dom.parentNode) ? dom.parentNode : false;
2717      }
2718      return false;
2719    };
2720
2721    this.getViewport = function (me) {
2722      var dom = (me && me.parentNode) ? me.parentNode : false;
2723      while (dom && (dom.nodeType == 1) && !(/^BODY|HTML/.test(dom.nodeName))) {
2724        var dd = $(dom);
2725        if (/fixed|absolute/.test(dd.css("position"))) return dd;
2726        var ov = dd.css('overflowY') || dd.css('overflowX') || dd.css('overflow') || '';
2727        if ((/scroll|auto/.test(ov)) && (dom.clientHeight != dom.scrollHeight)) return dd;
2728        if (dd.getNiceScroll().length > 0) return dd;
2729        dom = (dom.parentNode) ? dom.parentNode : false;
2730      }
2731      return false;
2732    };
2733
2734    this.triggerScrollStart = function (cx, cy, rx, ry, ms) {
2735
2736      if (self.onscrollstart) {
2737        var info = {
2738          type: "scrollstart",
2739          current: {
2740            x: cx,
2741            y: cy
2742          },
2743          request: {
2744            x: rx,
2745            y: ry
2746          },
2747          end: {
2748            x: self.newscrollx,
2749            y: self.newscrolly
2750          },
2751          speed: ms
2752        };
2753        self.onscrollstart.call(self, info);
2754      }
2755
2756    };
2757
2758    this.triggerScrollEnd = function () {
2759      if (self.onscrollend) {
2760
2761        var px = self.getScrollLeft();
2762        var py = self.getScrollTop();
2763
2764        var info = {
2765          type: "scrollend",
2766          current: {
2767            x: px,
2768            y: py
2769          },
2770          end: {
2771            x: px,
2772            y: py
2773          }
2774        };
2775
2776        self.onscrollend.call(self, info);
2777
2778      }
2779
2780    };
2781
2782    var scrolldiry = 0, scrolldirx = 0, scrolltmr = 0, scrollspd = 1;
2783
2784    function doScrollRelative(px, py, chkscroll, iswheel) {
2785
2786      if (!self.scrollrunning) {
2787        self.newscrolly = self.getScrollTop();
2788        self.newscrollx = self.getScrollLeft();
2789        scrolltmr = now();
2790      }
2791
2792      var gap = (now() - scrolltmr);
2793      scrolltmr = now();
2794
2795      if (gap > 350) {
2796        scrollspd = 1;
2797      } else {
2798        scrollspd += (2 - scrollspd) / 10;
2799      }
2800
2801      px = px * scrollspd | 0;
2802      py = py * scrollspd | 0;
2803
2804      if (px) {
2805
2806        if (iswheel) { // mouse-only
2807          if (px < 0) {  // fix apple magic mouse swipe back/forward
2808            if (self.getScrollLeft() >= self.page.maxw) return true;
2809          } else {
2810            if (self.getScrollLeft() <= 0) return true;
2811          }
2812        }
2813
2814        var dx = px > 0 ? 1 : -1;
2815
2816        if (scrolldirx !== dx) {
2817          if (self.scrollmom) self.scrollmom.stop();
2818          self.newscrollx = self.getScrollLeft();
2819          scrolldirx = dx;
2820        }
2821
2822        self.lastdeltax -= px;
2823
2824      }
2825
2826      if (py) {
2827
2828        var chk = (function () {
2829          var top = self.getScrollTop();
2830          if (py < 0) {
2831            if (top >= self.page.maxh) return true;
2832          } else {
2833            if (top <= 0) return true;
2834          }
2835        })();
2836
2837        if (chk) {
2838          if (opt.nativeparentscrolling && chkscroll && !self.ispage && !self.zoomactive) return true;
2839          var ny = self.view.h >> 1;
2840          if (self.newscrolly < -ny) { self.newscrolly = -ny; py = -1; }
2841          else if (self.newscrolly > self.page.maxh + ny) { self.newscrolly = self.page.maxh + ny; py = 1; }
2842          else py = 0;
2843        }
2844
2845        var dy = py > 0 ? 1 : -1;
2846
2847        if (scrolldiry !== dy) {
2848          if (self.scrollmom) self.scrollmom.stop();
2849          self.newscrolly = self.getScrollTop();
2850          scrolldiry = dy;
2851        }
2852
2853        self.lastdeltay -= py;
2854
2855      }
2856
2857      if (py || px) {
2858        self.synched("relativexy", function () {
2859
2860          var dty = self.lastdeltay + self.newscrolly;
2861          self.lastdeltay = 0;
2862
2863          var dtx = self.lastdeltax + self.newscrollx;
2864          self.lastdeltax = 0;
2865
2866          if (!self.rail.drag) self.doScrollPos(dtx, dty);
2867
2868        });
2869      }
2870
2871    }
2872
2873    var hasparentscrollingphase = false;
2874
2875    function execScrollWheel(e, hr, chkscroll) {
2876      var px, py;
2877
2878      if (!chkscroll && hasparentscrollingphase) return true;
2879
2880      if (e.deltaMode === 0) { // PIXEL
2881        px = -(e.deltaX * (opt.mousescrollstep / (18 * 3))) | 0;
2882        py = -(e.deltaY * (opt.mousescrollstep / (18 * 3))) | 0;
2883      } else if (e.deltaMode === 1) { // LINE
2884        px = -(e.deltaX * opt.mousescrollstep * 50 / 80) | 0;
2885        py = -(e.deltaY * opt.mousescrollstep * 50 / 80) | 0;
2886      }
2887
2888      if (hr && opt.oneaxismousemode && (px === 0) && py) { // classic vertical-only mousewheel + browser with x/y support 
2889        px = py;
2890        py = 0;
2891
2892        if (chkscroll) {
2893          var hrend = (px < 0) ? (self.getScrollLeft() >= self.page.maxw) : (self.getScrollLeft() <= 0);
2894          if (hrend) {  // preserve vertical scrolling
2895            py = px;
2896            px = 0;
2897          }
2898        }
2899
2900      }
2901
2902      // invert horizontal direction for rtl mode
2903      if (self.isrtlmode) px = -px;
2904
2905      var chk = doScrollRelative(px, py, chkscroll, true);
2906
2907      if (chk) {
2908        if (chkscroll) hasparentscrollingphase = true;
2909      } else {
2910        hasparentscrollingphase = false;
2911        e.stopImmediatePropagation();
2912        return e.preventDefault();
2913      }
2914
2915    }
2916
2917    this.onmousewheel = function (e) {
2918      if (self.wheelprevented||self.locked) return false;
2919      if (self.railslocked) {
2920        self.debounced("checkunlock", self.resize, 250);
2921        return false;
2922      }
2923      if (self.rail.drag) return self.cancelEvent(e);
2924
2925      if (opt.oneaxismousemode === "auto" && e.deltaX !== 0) opt.oneaxismousemode = false; // check two-axis mouse support (not very elegant)
2926
2927      if (opt.oneaxismousemode && e.deltaX === 0) {
2928        if (!self.rail.scrollable) {
2929          if (self.railh && self.railh.scrollable) {
2930            return self.onmousewheelhr(e);
2931          } else {
2932            return true;
2933          }
2934        }
2935      }
2936
2937      var nw = now();
2938      var chk = false;
2939      if (opt.preservenativescrolling && ((self.checkarea + 600) < nw)) {
2940        self.nativescrollingarea = self.isScrollable(e);
2941        chk = true;
2942      }
2943      self.checkarea = nw;
2944      if (self.nativescrollingarea) return true; // this isn't my business
2945      var ret = execScrollWheel(e, false, chk);
2946      if (ret) self.checkarea = 0;
2947      return ret;
2948    };
2949
2950    this.onmousewheelhr = function (e) {
2951      if (self.wheelprevented) return;
2952      if (self.railslocked || !self.railh.scrollable) return true;
2953      if (self.rail.drag) return self.cancelEvent(e);
2954
2955      var nw = now();
2956      var chk = false;
2957      if (opt.preservenativescrolling && ((self.checkarea + 600) < nw)) {
2958        self.nativescrollingarea = self.isScrollable(e);
2959        chk = true;
2960      }
2961      self.checkarea = nw;
2962      if (self.nativescrollingarea) return true; // this is not my business
2963      if (self.railslocked) return self.cancelEvent(e);
2964
2965      return execScrollWheel(e, true, chk);
2966    };
2967
2968    this.stop = function () {
2969      self.cancelScroll();
2970      if (self.scrollmon) self.scrollmon.stop();
2971      self.cursorfreezed = false;
2972      self.scroll.y = Math.round(self.getScrollTop() * (1 / self.scrollratio.y));
2973      self.noticeCursor();
2974      return self;
2975    };
2976
2977    this.getTransitionSpeed = function (dif) {
2978
2979      return 80 + (dif / 72) * opt.scrollspeed |0;
2980
2981    };
2982
2983    if (!opt.smoothscroll) {
2984      this.doScrollLeft = function (x, spd) { //direct
2985        var y = self.getScrollTop();
2986        self.doScrollPos(x, y, spd);
2987      };
2988      this.doScrollTop = function (y, spd) { //direct
2989        var x = self.getScrollLeft();
2990        self.doScrollPos(x, y, spd);
2991      };
2992      this.doScrollPos = function (x, y, spd) { //direct
2993        var nx = (x > self.page.maxw) ? self.page.maxw : x;
2994        if (nx < 0) nx = 0;
2995        var ny = (y > self.page.maxh) ? self.page.maxh : y;
2996        if (ny < 0) ny = 0;
2997        self.synched('scroll', function () {
2998          self.setScrollTop(ny);
2999          self.setScrollLeft(nx);
3000        });
3001      };
3002      this.cancelScroll = function () { }; // direct
3003
3004    } else if (self.ishwscroll && cap.hastransition && opt.usetransition && !!opt.smoothscroll) {
3005
3006      var lasttransitionstyle = '';
3007
3008      this.resetTransition = function () {
3009        lasttransitionstyle = '';
3010        self.doc.css(cap.prefixstyle + 'transition-duration', '0ms');
3011      };
3012
3013      this.prepareTransition = function (dif, istime) {
3014        var ex = (istime) ? dif : self.getTransitionSpeed(dif);
3015        var trans = ex + 'ms';
3016        if (lasttransitionstyle !== trans) {
3017          lasttransitionstyle = trans;
3018          self.doc.css(cap.prefixstyle + 'transition-duration', trans);
3019        }
3020        return ex;
3021      };
3022
3023      this.doScrollLeft = function (x, spd) { //trans
3024        var y = (self.scrollrunning) ? self.newscrolly : self.getScrollTop();
3025        self.doScrollPos(x, y, spd);
3026      };
3027
3028      this.doScrollTop = function (y, spd) { //trans
3029        var x = (self.scrollrunning) ? self.newscrollx : self.getScrollLeft();
3030        self.doScrollPos(x, y, spd);
3031      };
3032
3033      this.cursorupdate = {
3034        running: false,
3035        start: function () {
3036          var m = this;
3037
3038          if (m.running) return;
3039          m.running = true;
3040
3041          var loop = function () {
3042            if (m.running) setAnimationFrame(loop);
3043            self.showCursor(self.getScrollTop(), self.getScrollLeft());
3044            self.notifyScrollEvent(self.win[0]);
3045          };
3046
3047          setAnimationFrame(loop);
3048        },
3049        stop: function () {
3050          this.running = false;
3051        }
3052      };
3053
3054      this.doScrollPos = function (x, y, spd) { //trans
3055
3056        var py = self.getScrollTop();
3057        var px = self.getScrollLeft();
3058
3059        if (((self.newscrolly - py) * (y - py) < 0) || ((self.newscrollx - px) * (x - px) < 0)) self.cancelScroll(); //inverted movement detection      
3060
3061        if (!opt.bouncescroll) {
3062          if (y < 0) y = 0;
3063          else if (y > self.page.maxh) y = self.page.maxh;
3064          if (x < 0) x = 0;
3065          else if (x > self.page.maxw) x = self.page.maxw;
3066        } else {
3067          if (y < 0) y = y / 2 | 0;
3068          else if (y > self.page.maxh) y = self.page.maxh + (y - self.page.maxh) / 2 | 0;
3069          if (x < 0) x = x / 2 | 0;
3070          else if (x > self.page.maxw) x = self.page.maxw + (x - self.page.maxw) / 2 | 0;
3071        }
3072
3073        if (self.scrollrunning && x == self.newscrollx && y == self.newscrolly) return false;
3074
3075        self.newscrolly = y;
3076        self.newscrollx = x;
3077
3078        var top = self.getScrollTop();
3079        var lft = self.getScrollLeft();
3080
3081        var dst = {};
3082        dst.x = x - lft;
3083        dst.y = y - top;
3084
3085        var dd = Math.sqrt((dst.x * dst.x) + (dst.y * dst.y)) | 0;
3086
3087        var ms = self.prepareTransition(dd);
3088
3089        if (!self.scrollrunning) {
3090          self.scrollrunning = true;
3091          self.triggerScrollStart(lft, top, x, y, ms);
3092          self.cursorupdate.start();
3093        }
3094
3095        self.scrollendtrapped = true;
3096
3097        if (!cap.transitionend) {
3098          if (self.scrollendtrapped) clearTimeout(self.scrollendtrapped);
3099          self.scrollendtrapped = setTimeout(self.onScrollTransitionEnd, ms); // simulate transitionend event
3100        }
3101
3102        self.setScrollTop(self.newscrolly);
3103        self.setScrollLeft(self.newscrollx);
3104
3105      };
3106
3107      this.cancelScroll = function () {
3108        if (!self.scrollendtrapped) return true;
3109        var py = self.getScrollTop();
3110        var px = self.getScrollLeft();
3111        self.scrollrunning = false;
3112        if (!cap.transitionend) clearTimeout(cap.transitionend);
3113        self.scrollendtrapped = false;
3114        self.resetTransition();
3115        self.setScrollTop(py); // fire event onscroll
3116        if (self.railh) self.setScrollLeft(px);
3117        if (self.timerscroll && self.timerscroll.tm) clearInterval(self.timerscroll.tm);
3118        self.timerscroll = false;
3119
3120        self.cursorfreezed = false;
3121
3122        self.cursorupdate.stop();
3123        self.showCursor(py, px);
3124        return self;
3125      };
3126
3127      this.onScrollTransitionEnd = function () {
3128
3129        if (!self.scrollendtrapped) return;
3130
3131        var py = self.getScrollTop();
3132        var px = self.getScrollLeft();
3133
3134        if (py < 0) py = 0;
3135        else if (py > self.page.maxh) py = self.page.maxh;
3136        if (px < 0) px = 0;
3137        else if (px > self.page.maxw) px = self.page.maxw;
3138        if ((py != self.newscrolly) || (px != self.newscrollx)) return self.doScrollPos(px, py, opt.snapbackspeed);
3139
3140        if (self.scrollrunning) self.triggerScrollEnd();
3141        self.scrollrunning = false;
3142
3143        self.scrollendtrapped = false;
3144        self.resetTransition();
3145        self.timerscroll = false;
3146        self.setScrollTop(py); // fire event onscroll        
3147        if (self.railh) self.setScrollLeft(px); // fire event onscroll left
3148
3149        self.cursorupdate.stop();
3150        self.noticeCursor(false, py, px);
3151
3152        self.cursorfreezed = false;
3153
3154      };
3155
3156    } else {
3157
3158      this.doScrollLeft = function (x, spd) { //no-trans
3159        var y = (self.scrollrunning) ? self.newscrolly : self.getScrollTop();
3160        self.doScrollPos(x, y, spd);
3161      };
3162
3163      this.doScrollTop = function (y, spd) { //no-trans
3164        var x = (self.scrollrunning) ? self.newscrollx : self.getScrollLeft();
3165        self.doScrollPos(x, y, spd);
3166      };
3167
3168      this.doScrollPos = function (x, y, spd) { //no-trans
3169
3170        var py = self.getScrollTop();
3171        var px = self.getScrollLeft();
3172
3173        if (((self.newscrolly - py) * (y - py) < 0) || ((self.newscrollx - px) * (x - px) < 0)) self.cancelScroll(); //inverted movement detection
3174
3175        var clipped = false;
3176
3177        if (!self.bouncescroll || !self.rail.visibility) {
3178          if (y < 0) {
3179            y = 0;
3180            clipped = true;
3181          } else if (y > self.page.maxh) {
3182            y = self.page.maxh;
3183            clipped = true;
3184          }
3185        }
3186        if (!self.bouncescroll || !self.railh.visibility) {
3187          if (x < 0) {
3188            x = 0;
3189            clipped = true;
3190          } else if (x > self.page.maxw) {
3191            x = self.page.maxw;
3192            clipped = true;
3193          }
3194        }
3195
3196        if (self.scrollrunning && (self.newscrolly === y) && (self.newscrollx === x)) return true;
3197
3198        self.newscrolly = y;
3199        self.newscrollx = x;
3200
3201        self.dst = {};
3202        self.dst.x = x - px;
3203        self.dst.y = y - py;
3204        self.dst.px = px;
3205        self.dst.py = py;
3206
3207        var dd = Math.sqrt((self.dst.x * self.dst.x) + (self.dst.y * self.dst.y)) | 0;
3208        var ms = self.getTransitionSpeed(dd);
3209
3210        self.bzscroll = {};
3211
3212        var p3 = (clipped) ? 1 : 0.58;
3213        self.bzscroll.x = new BezierClass(px, self.newscrollx, ms, 0, 0, p3, 1);
3214        self.bzscroll.y = new BezierClass(py, self.newscrolly, ms, 0, 0, p3, 1);
3215
3216        var loopid = now();
3217
3218        var loop = function () {
3219
3220          if (!self.scrollrunning) return;
3221          var x = self.bzscroll.y.getPos();
3222
3223          self.setScrollLeft(self.bzscroll.x.getNow());
3224          self.setScrollTop(self.bzscroll.y.getNow());
3225
3226          if (x <= 1) {
3227            self.timer = setAnimationFrame(loop);
3228          } else {
3229            self.scrollrunning = false;
3230            self.timer = 0;
3231            self.triggerScrollEnd();
3232          }
3233
3234        };
3235
3236        if (!self.scrollrunning) {
3237          self.triggerScrollStart(px, py, x, y, ms);
3238          self.scrollrunning = true;
3239          self.timer = setAnimationFrame(loop);
3240        }
3241
3242      };
3243
3244      this.cancelScroll = function () {
3245        if (self.timer) clearAnimationFrame(self.timer);
3246        self.timer = 0;
3247        self.bzscroll = false;
3248        self.scrollrunning = false;
3249        return self;
3250      };
3251
3252    }
3253
3254    this.doScrollBy = function (stp, relative) {
3255      doScrollRelative(0, stp);
3256    };
3257
3258    this.doScrollLeftBy = function (stp, relative) {
3259      doScrollRelative(stp, 0);
3260    };
3261
3262    this.doScrollTo = function (pos, relative) {
3263      var ny = (relative) ? Math.round(pos * self.scrollratio.y) : pos;
3264      if (ny < 0) ny = 0;
3265      else if (ny > self.page.maxh) ny = self.page.maxh;
3266      self.cursorfreezed = false;
3267      self.doScrollTop(pos);
3268    };
3269
3270    this.checkContentSize = function () {
3271      var pg = self.getContentSize();
3272      if ((pg.h != self.page.h) || (pg.w != self.page.w)) self.resize(false, pg);
3273    };
3274
3275    self.onscroll = function (e) {
3276      if (self.rail.drag) return;
3277      if (!self.cursorfreezed) {
3278        self.synched('scroll', function () {
3279          self.scroll.y = Math.round(self.getScrollTop() / self.scrollratio.y);
3280          if (self.railh) self.scroll.x = Math.round(self.getScrollLeft() / self.scrollratio.x);
3281          self.noticeCursor();
3282        });
3283      }
3284    };
3285    self.bind(self.docscroll, "scroll", self.onscroll);
3286
3287    this.doZoomIn = function (e) {
3288      if (self.zoomactive) return;
3289      self.zoomactive = true;
3290
3291      self.zoomrestore = {
3292        style: {}
3293      };
3294      var lst = ['position', 'top', 'left', 'zIndex', 'backgroundColor', 'marginTop', 'marginBottom', 'marginLeft', 'marginRight'];
3295      var win = self.win[0].style;
3296      for (var a in lst) {
3297        var pp = lst[a];
3298        self.zoomrestore.style[pp] = (win[pp] !== undefined) ? win[pp] : '';
3299      }
3300
3301      self.zoomrestore.style.width = self.win.css('width');
3302      self.zoomrestore.style.height = self.win.css('height');
3303
3304      self.zoomrestore.padding = {
3305        w: self.win.outerWidth() - self.win.width(),
3306        h: self.win.outerHeight() - self.win.height()
3307      };
3308
3309      if (cap.isios4) {
3310        self.zoomrestore.scrollTop = $window.scrollTop();
3311        $window.scrollTop(0);
3312      }
3313
3314      self.win.css({
3315        position: (cap.isios4) ? "absolute" : "fixed",
3316        top: 0,
3317        left: 0,
3318        zIndex: globalmaxzindex + 100,
3319        margin: 0
3320      });
3321      var bkg = self.win.css("backgroundColor");
3322      if ("" === bkg || /transparent|rgba\(0, 0, 0, 0\)|rgba\(0,0,0,0\)/.test(bkg)) self.win.css("backgroundColor", "#fff");
3323      self.rail.css({
3324        zIndex: globalmaxzindex + 101
3325      });
3326      self.zoom.css({
3327        zIndex: globalmaxzindex + 102
3328      });
3329      self.zoom.css('backgroundPosition', '0 -18px');
3330      self.resizeZoom();
3331
3332      if (self.onzoomin) self.onzoomin.call(self);
3333
3334      return self.cancelEvent(e);
3335    };
3336
3337    this.doZoomOut = function (e) {
3338      if (!self.zoomactive) return;
3339      self.zoomactive = false;
3340
3341      self.win.css("margin", "");
3342      self.win.css(self.zoomrestore.style);
3343
3344      if (cap.isios4) {
3345        $window.scrollTop(self.zoomrestore.scrollTop);
3346      }
3347
3348      self.rail.css({
3349        "z-index": self.zindex
3350      });
3351      self.zoom.css({
3352        "z-index": self.zindex
3353      });
3354      self.zoomrestore = false;
3355      self.zoom.css('backgroundPosition', '0 0');
3356      self.onResize();
3357
3358      if (self.onzoomout) self.onzoomout.call(self);
3359
3360      return self.cancelEvent(e);
3361    };
3362
3363    this.doZoom = function (e) {
3364      return (self.zoomactive) ? self.doZoomOut(e) : self.doZoomIn(e);
3365    };
3366
3367    this.resizeZoom = function () {
3368      if (!self.zoomactive) return;
3369
3370      var py = self.getScrollTop(); //preserve scrolling position
3371      self.win.css({
3372        width: $window.width() - self.zoomrestore.padding.w + "px",
3373        height: $window.height() - self.zoomrestore.padding.h + "px"
3374      });
3375      self.onResize();
3376
3377      self.setScrollTop(Math.min(self.page.maxh, py));
3378    };
3379
3380    this.init();
3381
3382    $.nicescroll.push(this);
3383
3384  };
3385
3386  // Inspired by the work of Kin Blas
3387  // http://webpro.host.adobe.com/people/jblas/momentum/includes/jquery.momentum.0.7.js  
3388  var ScrollMomentumClass2D = function (nc) {
3389    var self = this;
3390    this.nc = nc;
3391
3392    this.lastx = 0;
3393    this.lasty = 0;
3394    this.speedx = 0;
3395    this.speedy = 0;
3396    this.lasttime = 0;
3397    this.steptime = 0;
3398    this.snapx = false;
3399    this.snapy = false;
3400    this.demulx = 0;
3401    this.demuly = 0;
3402
3403    this.lastscrollx = -1;
3404    this.lastscrolly = -1;
3405
3406    this.chkx = 0;
3407    this.chky = 0;
3408
3409    this.timer = 0;
3410
3411    this.reset = function (px, py) {
3412      self.stop();
3413      self.steptime = 0;
3414      self.lasttime = now();
3415      self.speedx = 0;
3416      self.speedy = 0;
3417      self.lastx = px;
3418      self.lasty = py;
3419      self.lastscrollx = -1;
3420      self.lastscrolly = -1;
3421    };
3422
3423    this.update = function (px, py) {
3424      var tm = now();
3425      self.steptime = tm - self.lasttime;
3426      self.lasttime = tm;
3427      var dy = py - self.lasty;
3428      var dx = px - self.lastx;
3429      var sy = self.nc.getScrollTop();
3430      var sx = self.nc.getScrollLeft();
3431      var newy = sy + dy;
3432      var newx = sx + dx;
3433      self.snapx = (newx < 0) || (newx > self.nc.page.maxw);
3434      self.snapy = (newy < 0) || (newy > self.nc.page.maxh);
3435      self.speedx = dx;
3436      self.speedy = dy;
3437      self.lastx = px;
3438      self.lasty = py;
3439    };
3440
3441    this.stop = function () {
3442      self.nc.unsynched("domomentum2d");
3443      if (self.timer) clearTimeout(self.timer);
3444      self.timer = 0;
3445      self.lastscrollx = -1;
3446      self.lastscrolly = -1;
3447    };
3448
3449    this.doSnapy = function (nx, ny) {
3450      var snap = false;
3451
3452      if (ny < 0) {
3453        ny = 0;
3454        snap = true;
3455      } else if (ny > self.nc.page.maxh) {
3456        ny = self.nc.page.maxh;
3457        snap = true;
3458      }
3459
3460      if (nx < 0) {
3461        nx = 0;
3462        snap = true;
3463      } else if (nx > self.nc.page.maxw) {
3464        nx = self.nc.page.maxw;
3465        snap = true;
3466      }
3467
3468      (snap) ? self.nc.doScrollPos(nx, ny, self.nc.opt.snapbackspeed) : self.nc.triggerScrollEnd();
3469    };
3470
3471    this.doMomentum = function (gp) {
3472      var t = now();
3473      var l = (gp) ? t + gp : self.lasttime;
3474
3475      var sl = self.nc.getScrollLeft();
3476      var st = self.nc.getScrollTop();
3477
3478      var pageh = self.nc.page.maxh;
3479      var pagew = self.nc.page.maxw;
3480
3481      self.speedx = (pagew > 0) ? Math.min(60, self.speedx) : 0;
3482      self.speedy = (pageh > 0) ? Math.min(60, self.speedy) : 0;
3483
3484      var chk = l && (t - l) <= 60;
3485
3486      if ((st < 0) || (st > pageh) || (sl < 0) || (sl > pagew)) chk = false;
3487
3488      var sy = (self.speedy && chk) ? self.speedy : false;
3489      var sx = (self.speedx && chk) ? self.speedx : false;
3490
3491      if (sy || sx) {
3492        var tm = Math.max(16, self.steptime); //timeout granularity
3493
3494        if (tm > 50) { // do smooth
3495          var xm = tm / 50;
3496          self.speedx *= xm;
3497          self.speedy *= xm;
3498          tm = 50;
3499        }
3500
3501        self.demulxy = 0;
3502
3503        self.lastscrollx = self.nc.getScrollLeft();
3504        self.chkx = self.lastscrollx;
3505        self.lastscrolly = self.nc.getScrollTop();
3506        self.chky = self.lastscrolly;
3507
3508        var nx = self.lastscrollx;
3509        var ny = self.lastscrolly;
3510
3511        var onscroll = function () {
3512          var df = ((now() - t) > 600) ? 0.04 : 0.02;
3513
3514          if (self.speedx) {
3515            nx = Math.floor(self.lastscrollx - (self.speedx * (1 - self.demulxy)));
3516            self.lastscrollx = nx;
3517            if ((nx < 0) || (nx > pagew)) df = 0.10;
3518          }
3519
3520          if (self.speedy) {
3521            ny = Math.floor(self.lastscrolly - (self.speedy * (1 - self.demulxy)));
3522            self.lastscrolly = ny;
3523            if ((ny < 0) || (ny > pageh)) df = 0.10;
3524          }
3525
3526          self.demulxy = Math.min(1, self.demulxy + df);
3527
3528          self.nc.synched("domomentum2d", function () {
3529
3530            if (self.speedx) {
3531              var scx = self.nc.getScrollLeft();
3532              //              if (scx != self.chkx) self.stop();
3533              self.chkx = nx;
3534              self.nc.setScrollLeft(nx);
3535            }
3536
3537            if (self.speedy) {
3538              var scy = self.nc.getScrollTop();
3539              //              if (scy != self.chky) self.stop();
3540              self.chky = ny;
3541              self.nc.setScrollTop(ny);
3542            }
3543
3544            if (!self.timer) {
3545              self.nc.hideCursor();
3546              self.doSnapy(nx, ny);
3547            }
3548
3549          });
3550
3551          if (self.demulxy < 1) {
3552            self.timer = setTimeout(onscroll, tm);
3553          } else {
3554            self.stop();
3555            self.nc.hideCursor();
3556            self.doSnapy(nx, ny);
3557          }
3558        };
3559
3560        onscroll();
3561
3562      } else {
3563        self.doSnapy(self.nc.getScrollLeft(), self.nc.getScrollTop());
3564      }
3565
3566    };
3567
3568  };
3569
3570
3571  // override jQuery scrollTop
3572  var _scrollTop = jQuery.fn.scrollTop; // preserve original function
3573
3574  jQuery.cssHooks.pageYOffset = {
3575    get: function (elem, computed, extra) {
3576      var nice = $.data(elem, '__nicescroll') || false;
3577      return (nice && nice.ishwscroll) ? nice.getScrollTop() : _scrollTop.call(elem);
3578    },
3579    set: function (elem, value) {
3580      var nice = $.data(elem, '__nicescroll') || false;
3581      (nice && nice.ishwscroll) ? nice.setScrollTop(parseInt(value)) : _scrollTop.call(elem, value);
3582      return this;
3583    }
3584  };
3585
3586  jQuery.fn.scrollTop = function (value) {
3587    if (value === undefined) {
3588      var nice = (this[0]) ? $.data(this[0], '__nicescroll') || false : false;
3589      return (nice && nice.ishwscroll) ? nice.getScrollTop() : _scrollTop.call(this);
3590    } else {
3591      return this.each(function () {
3592        var nice = $.data(this, '__nicescroll') || false;
3593        (nice && nice.ishwscroll) ? nice.setScrollTop(parseInt(value)) : _scrollTop.call($(this), value);
3594      });
3595    }
3596  };
3597
3598  // override jQuery scrollLeft
3599  var _scrollLeft = jQuery.fn.scrollLeft; // preserve original function
3600
3601  $.cssHooks.pageXOffset = {
3602    get: function (elem, computed, extra) {
3603      var nice = $.data(elem, '__nicescroll') || false;
3604      return (nice && nice.ishwscroll) ? nice.getScrollLeft() : _scrollLeft.call(elem);
3605    },
3606    set: function (elem, value) {
3607      var nice = $.data(elem, '__nicescroll') || false;
3608      (nice && nice.ishwscroll) ? nice.setScrollLeft(parseInt(value)) : _scrollLeft.call(elem, value);
3609      return this;
3610    }
3611  };
3612
3613  jQuery.fn.scrollLeft = function (value) {
3614    if (value === undefined) {
3615      var nice = (this[0]) ? $.data(this[0], '__nicescroll') || false : false;
3616      return (nice && nice.ishwscroll) ? nice.getScrollLeft() : _scrollLeft.call(this);
3617    } else {
3618      return this.each(function () {
3619        var nice = $.data(this, '__nicescroll') || false;
3620        (nice && nice.ishwscroll) ? nice.setScrollLeft(parseInt(value)) : _scrollLeft.call($(this), value);
3621      });
3622    }
3623  };
3624
3625  var NiceScrollArray = function (doms) {
3626    var self = this;
3627    this.length = 0;
3628    this.name = "nicescrollarray";
3629
3630    this.each = function (fn) {
3631      $.each(self, fn);
3632      return self;
3633    };
3634
3635    this.push = function (nice) {
3636      self[self.length] = nice;
3637      self.length++;
3638    };
3639
3640    this.eq = function (idx) {
3641      return self[idx];
3642    };
3643
3644    if (doms) {
3645      for (var a = 0; a < doms.length; a++) {
3646        var nice = $.data(doms[a], '__nicescroll') || false;
3647        if (nice) {
3648          this[this.length] = nice;
3649          this.length++;
3650        }
3651      }
3652    }
3653
3654    return this;
3655  };
3656
3657  function mplex(el, lst, fn) {
3658    for (var a = 0, l = lst.length; a < l; a++) fn(el, lst[a]);
3659  }
3660  mplex(
3661    NiceScrollArray.prototype, ['show', 'hide', 'toggle', 'onResize', 'resize', 'remove', 'stop', 'doScrollPos'],
3662    function (e, n) {
3663      e[n] = function () {
3664        var args = arguments;
3665        return this.each(function () {
3666          this[n].apply(this, args);
3667        });
3668      };
3669    }
3670  );
3671
3672  jQuery.fn.getNiceScroll = function (index) {
3673    if (index === undefined) {
3674      return new NiceScrollArray(this);
3675    } else {
3676      return this[index] && $.data(this[index], '__nicescroll') || false;
3677    }
3678  };
3679
3680  var pseudos = jQuery.expr.pseudos || jQuery.expr[':'];  // jQuery 3 migration
3681  pseudos.nicescroll = function (a) {
3682    return $.data(a, '__nicescroll') !== undefined;
3683  };
3684
3685  $.fn.niceScroll = function (wrapper, _opt) {
3686    if (_opt === undefined && typeof wrapper == "object" && !("jquery" in wrapper)) {
3687      _opt = wrapper;
3688      wrapper = false;
3689    }
3690
3691    var ret = new NiceScrollArray();
3692
3693    this.each(function () {
3694      var $this = $(this);
3695
3696      var opt = $.extend({}, _opt); // cloning
3697
3698      if (wrapper || false) {
3699        var wrp = $(wrapper);
3700        opt.doc = (wrp.length > 1) ? $(wrapper, $this) : wrp;
3701        opt.win = $this;
3702      }
3703      var docundef = !("doc" in opt);
3704      if (!docundef && !("win" in opt)) opt.win = $this;
3705
3706      var nice = $this.data('__nicescroll') || false;
3707      if (!nice) {
3708        opt.doc = opt.doc || $this;
3709        nice = new NiceScrollClass(opt, $this);
3710        $this.data('__nicescroll', nice);
3711      }
3712      ret.push(nice);
3713    });
3714
3715    return (ret.length === 1) ? ret[0] : ret;
3716  };
3717
3718  _win.NiceScroll = {
3719    getjQuery: function () {
3720      return jQuery;
3721    }
3722  };
3723
3724  if (!$.nicescroll) {
3725    $.nicescroll = new NiceScrollArray();
3726    $.nicescroll.options = _globaloptions;
3727  }
3728
3729}));
Line numbers count LF bytes from the start of the resource, as the search results do. Vendor segments are library code the classifier recognised; they are stored but not indexed. Bytes are shown as Latin1 characters, one per byte.