Skip to content

Instantly share code, notes, and snippets.

@nilocesar

nilocesar/jquery.mCustomScrollbar.js

Created Oct 23, 2012
Star
Embed
What would you like to do?
Learn more about clone URLs
Download ZIP
Raw
jquery.mCustomScrollbar.js
/*
== malihu jquery custom scrollbars plugin ==
version: 2.1
author: malihu (http://manos.malihu.gr)
plugin home: http://manos.malihu.gr/jquery-custom-content-scroller
*/
(function($){
var methods={
init:function(options){
var defaults={
set_width:false, /*optional element width: boolean, pixels, percentage*/
set_height:false, /*optional element height: boolean, pixels, percentage*/
horizontalScroll:false, /*scroll horizontally: boolean*/
scrollInertia:550, /*scrolling inertia: integer (milliseconds)*/
scrollEasing:"easeOutCirc", /*scrolling easing: string*/
mouseWheel:"auto", /*mousewheel support and velocity: boolean, "auto", integer*/
autoDraggerLength:true, /*auto-adjust scrollbar dragger length: boolean*/
scrollButtons:{ /*scroll buttons*/
enable:false, /*scroll buttons support: boolean*/
scrollType:"continuous", /*scroll buttons scrolling type: "continuous", "pixels"*/
scrollSpeed:20, /*scroll buttons continuous scrolling speed: integer*/
scrollAmount:40 /*scroll buttons pixels scroll amount: integer (pixels)*/
},
advanced:{
updateOnBrowserResize:true, /*update scrollbars on browser resize (for layouts based on percentages): boolean*/
updateOnContentResize:false, /*auto-update scrollbars on content resize (for dynamic content): boolean*/
autoExpandHorizontalScroll:false /*auto-expand width for horizontal scrolling: boolean*/
},
callbacks:{
onScroll:function(){}, /*user custom callback function on scroll event*/
onTotalScroll:function(){}, /*user custom callback function on scroll end reached event*/
onTotalScrollOffset:0 /*scroll end reached offset: integer (pixels)*/
}
},
options=$.extend(true,defaults,options);
/*check for touch device*/
$(document).data("mCS-is-touch-device",false);
if(is_touch_device()){
$(document).data("mCS-is-touch-device",true);
}
function is_touch_device(){
return !!("ontouchstart" in window) ? 1 : 0;
}
return this.each(function(){
var $this=$(this);
/*set element width/height, create markup for custom scrollbars, add classes*/
if(options.set_width){
$this.css("width",options.set_width);
}
if(options.set_height){
$this.css("height",options.set_height);
}
if(!$(document).data("mCustomScrollbar-index")){
$(document).data("mCustomScrollbar-index","1");
}else{
var mCustomScrollbarIndex=parseInt($(document).data("mCustomScrollbar-index"));
$(document).data("mCustomScrollbar-index",mCustomScrollbarIndex+1);
}
$this.wrapInner("<div class='mCustomScrollBox' id='mCSB_"+$(document).data("mCustomScrollbar-index")+"' style='position:relative; height:100%; overflow:hidden; max-width:100%;' />").addClass("mCustomScrollbar _mCS_"+$(document).data("mCustomScrollbar-index"));
var mCustomScrollBox=$this.children(".mCustomScrollBox");
if(options.horizontalScroll){
mCustomScrollBox.addClass("mCSB_horizontal").wrapInner("<div class='mCSB_h_wrapper' style='position:relative; left:0; width:999999px;' />");
var mCSB_h_wrapper=mCustomScrollBox.children(".mCSB_h_wrapper");
mCSB_h_wrapper.wrapInner("<div class='mCSB_container' style='position:absolute; left:0;' />").children(".mCSB_container").css({"width":mCSB_h_wrapper.children().outerWidth(),"position":"relative"}).unwrap();
}else{
mCustomScrollBox.wrapInner("<div class='mCSB_container' style='position:relative; top:0;' />");
}
var mCSB_container=mCustomScrollBox.children(".mCSB_container");
if(!$(document).data("mCS-is-touch-device")){ /*not touch device - apply custom scrollbars functionality*/
mCSB_container.after("<div class='mCSB_scrollTools' style='position:absolute;'><div class='mCSB_draggerContainer' style='position:relative;'><div class='mCSB_dragger' style='position:absolute;'><div class='mCSB_dragger_bar' style='position:relative;'></div></div><div class='mCSB_draggerRail'></div></div></div>");
var mCSB_scrollTools=mCustomScrollBox.children(".mCSB_scrollTools"),
mCSB_draggerContainer=mCSB_scrollTools.children(".mCSB_draggerContainer"),
mCSB_dragger=mCSB_draggerContainer.children(".mCSB_dragger");
if(options.horizontalScroll){
mCSB_dragger.data("minDraggerWidth",mCSB_dragger.width());
}else{
mCSB_dragger.data("minDraggerHeight",mCSB_dragger.height());
}
if(options.scrollButtons.enable){
if(options.horizontalScroll){
mCSB_scrollTools.prepend("<a class='mCSB_buttonLeft' style='display:block; position:relative;'></a>").append("<a class='mCSB_buttonRight' style='display:block; position:relative;'></a>");
}else{
mCSB_scrollTools.prepend("<a class='mCSB_buttonUp' style='display:block; position:relative;'></a>").append("<a class='mCSB_buttonDown' style='display:block; position:relative;'></a>");
}
}
/*mCustomScrollBox scrollTop and scrollLeft is always 0 to prevent browser focus scrolling*/
mCustomScrollBox.bind("scroll",function(){
mCustomScrollBox.scrollTop(0).scrollLeft(0);
});
/*store element options and update element*/
$this.data({
"horizontalScroll":options.horizontalScroll,
"scrollInertia":options.scrollInertia,
"scrollEasing":options.scrollEasing,
"mouseWheel":options.mouseWheel,
"autoDraggerLength":options.autoDraggerLength,
"scrollButtons-enable":options.scrollButtons.enable,
"scrollButtons-scrollType":options.scrollButtons.scrollType,
"scrollButtons-scrollSpeed":options.scrollButtons.scrollSpeed,
"scrollButtons-scrollAmount":options.scrollButtons.scrollAmount,
"autoExpandHorizontalScroll":options.advanced.autoExpandHorizontalScroll,
"onScroll-Callback":options.callbacks.onScroll,
"onTotalScroll-Callback":options.callbacks.onTotalScroll,
"onTotalScroll-Offset":options.callbacks.onTotalScrollOffset
}).mCustomScrollbar("update");
/*window resize fn (for layouts based on percentages)*/
if(options.advanced.updateOnBrowserResize){
var mCSB_resizeTimeout;
$(window).resize(function(){
if(mCSB_resizeTimeout){
clearTimeout(mCSB_resizeTimeout);
}
mCSB_resizeTimeout=setTimeout(function(){
$this.mCustomScrollbar("update");
},150);
});
}
}else{ /*is touch device*/
/*check for mobile os/browser not supporting overflow:auto (Android 2.xx)*/
var ua=navigator.userAgent;
if(ua.indexOf("Android")!=-1){
var androidversion=parseFloat(ua.slice(ua.indexOf("Android")+8));
if(androidversion<3){
touchScroll("mCSB_"+$(document).data("mCustomScrollbar-index")); /*non overflow:auto fn*/
}else{
mCustomScrollBox.css({"overflow":"auto","-webkit-overflow-scrolling":"touch"});
}
}else{
mCustomScrollBox.css({"overflow":"auto","-webkit-overflow-scrolling":"touch"});
}
mCSB_container.addClass("mCS_no_scrollbar mCS_touch");
$this.data({
"horizontalScroll":options.horizontalScroll,
"scrollInertia":options.scrollInertia,
"scrollEasing":options.scrollEasing,
"autoExpandHorizontalScroll":options.advanced.autoExpandHorizontalScroll,
"onScroll-Callback":options.callbacks.onScroll,
"onTotalScroll-Callback":options.callbacks.onTotalScroll,
"onTotalScroll-Offset":options.callbacks.onTotalScrollOffset
});
mCustomScrollBox.scroll(function(){
$this.mCustomScrollbar("callbacks",mCustomScrollBox,mCSB_container); /*user custom callback functions*/
});
/*non overflow:auto fn
(source: http://chris-barr.com/index.php/entry/scrolling_a_overflowauto_element_on_a_touch_screen_device/)*/
function touchScroll(id){
var el=document.getElementById(id),
scrollStartPosY=0,
scrollStartPosX=0;
document.getElementById(id).addEventListener("touchstart",function(event){
scrollStartPosY=this.scrollTop+event.touches[0].pageY;
scrollStartPosX=this.scrollLeft+event.touches[0].pageX;
/*event.preventDefault(); // Keep this remarked so you can click on buttons and links in the div*/
},false);
document.getElementById(id).addEventListener("touchmove",function(event){
/*These if statements allow the full page to scroll (not just the div) if they are
at the top of the div scroll or the bottom of the div scroll
The -5 and +5 below are in case they are trying to scroll the page sideways
but their finger moves a few pixels down or up. The event.preventDefault() function
will not be called in that case so that the whole page can scroll.*/
if((this.scrollTop<this.scrollHeight-this.offsetHeight && this.scrollTop+event.touches[0].pageY<scrollStartPosY-5) || (this.scrollTop!=0 && this.scrollTop+event.touches[0].pageY>scrollStartPosY+5))
event.preventDefault();
if((this.scrollLeft<this.scrollWidth-this.offsetWidth && this.scrollLeft+event.touches[0].pageX < scrollStartPosX-5) || (this.scrollLeft!=0&&this.scrollLeft+event.touches[0].pageX>scrollStartPosX+5))
event.preventDefault();
this.scrollTop=scrollStartPosY-event.touches[0].pageY;
this.scrollLeft=scrollStartPosX-event.touches[0].pageX;
},false);
}
}
/*content resize fn (for dynamically generated content)*/
if(options.advanced.updateOnContentResize){
var mCSB_onContentResize;
if(options.horizontalScroll){
var mCSB_containerOldSize=mCSB_container.outerWidth();
if(is_touch_device()){
/*disable iOS webkit inertia for smooth scrolling*/
mCustomScrollBox.css({"-webkit-overflow-scrolling":"auto"});
}
}else{
var mCSB_containerOldSize=mCSB_container.outerHeight();
}
mCSB_onContentResize=setInterval(function(){
if(options.horizontalScroll){
if(options.advanced.autoExpandHorizontalScroll){
mCSB_container.css({"position":"absolute","width":"auto"}).wrap("<div class='mCSB_h_wrapper' style='position:relative; left:0; width:999999px;' />").css({"width":mCSB_container.outerWidth(),"position":"relative"}).unwrap();
}
var mCSB_containerNewSize=mCSB_container.outerWidth();
}else{
var mCSB_containerNewSize=mCSB_container.outerHeight();
}
if(mCSB_containerNewSize!=mCSB_containerOldSize){
$this.mCustomScrollbar("update");
mCSB_containerOldSize=mCSB_containerNewSize;
}
},300);
}
});
},
update:function(){
var $this=$(this),
mCustomScrollBox=$this.children(".mCustomScrollBox"),
mCSB_container=mCustomScrollBox.children(".mCSB_container");
if(!$(document).data("mCS-is-touch-device")){
mCSB_container.removeClass("mCS_no_scrollbar");
}
var mCSB_scrollTools=mCustomScrollBox.children(".mCSB_scrollTools"),
mCSB_draggerContainer=mCSB_scrollTools.children(".mCSB_draggerContainer"),
mCSB_dragger=mCSB_draggerContainer.children(".mCSB_dragger");
if($this.data("horizontalScroll")){
var mCSB_buttonLeft=mCSB_scrollTools.children(".mCSB_buttonLeft"),
mCSB_buttonRight=mCSB_scrollTools.children(".mCSB_buttonRight"),
mCustomScrollBoxW=mCustomScrollBox.width();
if($this.data("autoExpandHorizontalScroll")){
mCSB_container.css({"position":"absolute","width":"auto"}).wrap("<div class='mCSB_h_wrapper' style='position:relative; left:0; width:999999px;' />").css({"width":mCSB_container.outerWidth(),"position":"relative"}).unwrap();
}
var mCSB_containerW=mCSB_container.outerWidth();
}else{
var mCSB_buttonUp=mCSB_scrollTools.children(".mCSB_buttonUp"),
mCSB_buttonDown=mCSB_scrollTools.children(".mCSB_buttonDown"),
mCustomScrollBoxH=mCustomScrollBox.height(),
mCSB_containerH=mCSB_container.outerHeight();
}
if(mCSB_containerH>mCustomScrollBoxH && !$this.data("horizontalScroll") && !$(document).data("mCS-is-touch-device")){ /*content needs vertical scrolling*/
mCSB_scrollTools.css("display","block");
var mCSB_draggerContainerH=mCSB_draggerContainer.height();
/*auto adjust scrollbar dragger length analogous to content*/
if($this.data("autoDraggerLength")){
var draggerH=Math.round(mCustomScrollBoxH/mCSB_containerH*mCSB_draggerContainerH),
minDraggerH=mCSB_dragger.data("minDraggerHeight");
if(draggerH<=minDraggerH){ /*min dragger height*/
mCSB_dragger.css({"height":minDraggerH});
}else if(draggerH>=mCSB_draggerContainerH-10){ /*max dragger height*/
var mCSB_draggerContainerMaxH=mCSB_draggerContainerH-10;
mCSB_dragger.css({"height":mCSB_draggerContainerMaxH});
}else{
mCSB_dragger.css({"height":draggerH});
}
mCSB_dragger.children(".mCSB_dragger_bar").css({"line-height":mCSB_dragger.height()+"px"});
}
var mCSB_draggerH=mCSB_dragger.height(),
/*calculate and store scroll amount*/
scrollAmount=(mCSB_containerH-mCustomScrollBoxH)/(mCSB_draggerContainerH-mCSB_draggerH);
$this.data("scrollAmount",scrollAmount);
/*add scrolling*/
$this.mCustomScrollbar("scrolling",mCustomScrollBox,mCSB_container,mCSB_draggerContainer,mCSB_dragger,mCSB_buttonUp,mCSB_buttonDown,mCSB_buttonLeft,mCSB_buttonRight);
/*scroll*/
var mCSB_containerP=Math.abs(Math.round(mCSB_container.position().top));
$this.mCustomScrollbar("scrollTo",mCSB_containerP,{callback:false});
}else if(mCSB_containerW>mCustomScrollBoxW && $this.data("horizontalScroll") && !$(document).data("mCS-is-touch-device")){ /*content needs horizontal scrolling*/
mCSB_scrollTools.css("display","block");
var mCSB_draggerContainerW=mCSB_draggerContainer.width();
/*auto adjust scrollbar dragger length analogous to content*/
if($this.data("autoDraggerLength")){
var draggerW=Math.round(mCustomScrollBoxW/mCSB_containerW*mCSB_draggerContainerW),
minDraggerW=mCSB_dragger.data("minDraggerWidth");
if(draggerW<=minDraggerW){ /*min dragger height*/
mCSB_dragger.css({"width":minDraggerW});
}else if(draggerW>=mCSB_draggerContainerW-10){ /*max dragger height*/
var mCSB_draggerContainerMaxW=mCSB_draggerContainerW-10;
mCSB_dragger.css({"width":mCSB_draggerContainerMaxW});
}else{
mCSB_dragger.css({"width":draggerW});
}
}
var mCSB_draggerW=mCSB_dragger.width(),
/*calculate and store scroll amount*/
scrollAmount=(mCSB_containerW-mCustomScrollBoxW)/(mCSB_draggerContainerW-mCSB_draggerW);
$this.data("scrollAmount",scrollAmount);
/*add scrolling*/
$this.mCustomScrollbar("scrolling",mCustomScrollBox,mCSB_container,mCSB_draggerContainer,mCSB_dragger,mCSB_buttonUp,mCSB_buttonDown,mCSB_buttonLeft,mCSB_buttonRight);
/*scroll*/
var mCSB_containerP=Math.abs(Math.round(mCSB_container.position().left));
$this.mCustomScrollbar("scrollTo",mCSB_containerP,{callback:false});
}else{ /*content does not need scrolling*/
/*unbind events, reset content position, hide scrollbars, remove classes*/
mCustomScrollBox.unbind("mousewheel");
mCustomScrollBox.unbind("focusin");
if($this.data("horizontalScroll")){
mCSB_dragger.add(mCSB_container).css("left",0);
}else{
mCSB_dragger.add(mCSB_container).css("top",0);
}
mCSB_scrollTools.css("display","none");
mCSB_container.addClass("mCS_no_scrollbar");
}
},
scrolling:function(mCustomScrollBox,mCSB_container,mCSB_draggerContainer,mCSB_dragger,mCSB_buttonUp,mCSB_buttonDown,mCSB_buttonLeft,mCSB_buttonRight){
var $this=$(this);
/*drag scrolling*/
if(!mCSB_dragger.hasClass("ui-draggable")){ /*apply drag function once*/
if($this.data("horizontalScroll")){
var draggableAxis="x";
}else{
var draggableAxis="y";
}
mCSB_dragger.draggable({
axis:draggableAxis,
containment:"parent",
drag:function(event,ui){
$this.mCustomScrollbar("scroll");
mCSB_dragger.addClass("mCSB_dragger_onDrag");
},
stop:function(event,ui){
mCSB_dragger.removeClass("mCSB_dragger_onDrag");
}
});
}
mCSB_draggerContainer.unbind("click").bind("click",function(e){
if($this.data("horizontalScroll")){
var mouseCoord=(e.pageX-mCSB_draggerContainer.offset().left);
if(mouseCoord<mCSB_dragger.position().left || mouseCoord>(mCSB_dragger.position().left+mCSB_dragger.width())){
var scrollToPos=mouseCoord;
if(scrollToPos>=mCSB_draggerContainer.width()-mCSB_dragger.width()){ /*max dragger position is bottom*/
scrollToPos=mCSB_draggerContainer.width()-mCSB_dragger.width();
}
mCSB_dragger.css("left",scrollToPos);
$this.mCustomScrollbar("scroll");
}
}else{
var mouseCoord=(e.pageY-mCSB_draggerContainer.offset().top);
if(mouseCoord<mCSB_dragger.position().top || mouseCoord>(mCSB_dragger.position().top+mCSB_dragger.height())){
var scrollToPos=mouseCoord;
if(scrollToPos>=mCSB_draggerContainer.height()-mCSB_dragger.height()){ /*max dragger position is bottom*/
scrollToPos=mCSB_draggerContainer.height()-mCSB_dragger.height();
}
mCSB_dragger.css("top",scrollToPos);
$this.mCustomScrollbar("scroll");
}
}
});
/*mousewheel scrolling*/
if($this.data("mouseWheel"))
{
var mousewheelVel=$this.data("mouseWheel");
if($this.data("mouseWheel")==="auto"){
mousewheelVel=8; /*default mousewheel velocity*/
/*check for safari browser on mac osx to lower mousewheel velocity*/
var os=navigator.userAgent;
if(os.indexOf("Mac")!=-1 && os.indexOf("Safari")!=-1 && os.indexOf("AppleWebKit")!=-1 && os.indexOf("Chrome")==-1){
mousewheelVel=1;
}
}
//////////
////NILO//
/////////
$("body").focus();
$("body").keydown(function(e)
{
var _delta = 0;
e.preventDefault();
if (e.which == 38 )
{
_delta = 1;
}
else if(e.which == 40 )
{
_delta = -1;
}
var vel=Math.abs( _delta*mousewheelVel );
var posY=mCSB_dragger.position().top-( _delta*vel);
mCSB_dragger.css("top",posY);
if(mCSB_dragger.position().top<0){
mCSB_dragger.css("top",0);
}
var mCSB_draggerContainerH=mCSB_draggerContainer.height(),
mCSB_draggerH=mCSB_dragger.height();
if(mCSB_dragger.position().top>mCSB_draggerContainerH-mCSB_draggerH)
{
mCSB_dragger.css("top",mCSB_draggerContainerH-mCSB_draggerH);
}
$this.mCustomScrollbar("scroll");
return false;
});
//////////
////NILO//
/////////
mCustomScrollBox.unbind("mousewheel").bind("mousewheel",function(event,delta)
{
event.preventDefault();
var vel=Math.abs(delta*mousewheelVel);
if($this.data("horizontalScroll"))
{
var posX=mCSB_dragger.position().left-(delta*vel);
mCSB_dragger.css("left",posX);
if(mCSB_dragger.position().left<0)
{
mCSB_dragger.css("left",0);
}
var mCSB_draggerContainerW=mCSB_draggerContainer.width(),
mCSB_draggerW=mCSB_dragger.width();
if(mCSB_dragger.position().left>mCSB_draggerContainerW-mCSB_draggerW){
mCSB_dragger.css("left",mCSB_draggerContainerW-mCSB_draggerW);
}
}else
{
//alert(delta)
var posY=mCSB_dragger.position().top-(delta*vel);
mCSB_dragger.css("top",posY);
if(mCSB_dragger.position().top<0){
mCSB_dragger.css("top",0);
}
var mCSB_draggerContainerH=mCSB_draggerContainer.height(),
mCSB_draggerH=mCSB_dragger.height();
if(mCSB_dragger.position().top>mCSB_draggerContainerH-mCSB_draggerH){
mCSB_dragger.css("top",mCSB_draggerContainerH-mCSB_draggerH);
}
}
$this.mCustomScrollbar("scroll");
});
}
/*buttons scrolling*/
if($this.data("scrollButtons-enable")){
if($this.data("scrollButtons-scrollType")==="pixels"){ /*scroll by pixels*/
var pixelsScrollTo;
if($.browser.msie && parseInt($.browser.version)<9){ /*stupid ie8*/
$this.data("scrollInertia",0);
}
if($this.data("horizontalScroll")){
mCSB_buttonRight.add(mCSB_buttonLeft).unbind("click mousedown mouseup mouseout",mCSB_buttonRight_stop,mCSB_buttonLeft_stop);
/*scroll right*/
mCSB_buttonRight.bind("click",function(e){
e.preventDefault();
if(!mCSB_container.is(":animated")){
pixelsScrollTo=Math.abs(mCSB_container.position().left)+$this.data("scrollButtons-scrollAmount");
$this.mCustomScrollbar("scrollTo",pixelsScrollTo);
}
});
/*scroll left*/
mCSB_buttonLeft.bind("click",function(e){
e.preventDefault();
if(!mCSB_container.is(":animated")){
pixelsScrollTo=Math.abs(mCSB_container.position().left)-$this.data("scrollButtons-scrollAmount");
if(mCSB_container.position().left>=-$this.data("scrollButtons-scrollAmount")){
pixelsScrollTo="left";
}
$this.mCustomScrollbar("scrollTo",pixelsScrollTo);
}
});
}else{
mCSB_buttonDown.add(mCSB_buttonUp).unbind("click mousedown mouseup mouseout",mCSB_buttonDown_stop,mCSB_buttonUp_stop);
/*scroll down*/
mCSB_buttonDown.bind("click",function(e){
e.preventDefault();
if(!mCSB_container.is(":animated")){
pixelsScrollTo=Math.abs(mCSB_container.position().top)+$this.data("scrollButtons-scrollAmount");
$this.mCustomScrollbar("scrollTo",pixelsScrollTo);
}
});
/*scroll up*/
mCSB_buttonUp.bind("click",function(e){
e.preventDefault();
if(!mCSB_container.is(":animated")){
pixelsScrollTo=Math.abs(mCSB_container.position().top)-$this.data("scrollButtons-scrollAmount");
if(mCSB_container.position().top>=-$this.data("scrollButtons-scrollAmount")){
pixelsScrollTo="top";
}
$this.mCustomScrollbar("scrollTo",pixelsScrollTo);
}
});
}
}else{ /*continuous scrolling*/
if($this.data("horizontalScroll")){
mCSB_buttonRight.add(mCSB_buttonLeft).unbind("click mousedown mouseup mouseout",mCSB_buttonRight_stop,mCSB_buttonLeft_stop);
/*scroll right*/
var mCSB_buttonScrollRight,
mCSB_draggerContainerW=mCSB_draggerContainer.width(),
mCSB_draggerW=mCSB_dragger.width();
mCSB_buttonRight.bind("mousedown",function(e){
e.preventDefault();
var draggerScrollTo=mCSB_draggerContainerW-mCSB_draggerW;
mCSB_buttonScrollRight=setInterval(function(){
var scrollToSpeed=Math.abs(mCSB_dragger.position().left-draggerScrollTo)*(100/$this.data("scrollButtons-scrollSpeed"));
mCSB_dragger.stop().animate({left:draggerScrollTo},scrollToSpeed,"linear");
$this.mCustomScrollbar("scroll");
},20);
});
var mCSB_buttonRight_stop=function(e){
e.preventDefault();
clearInterval(mCSB_buttonScrollRight);
mCSB_dragger.stop();
}
mCSB_buttonRight.bind("mouseup mouseout",mCSB_buttonRight_stop);
/*scroll left*/
var mCSB_buttonScrollLeft;
mCSB_buttonLeft.bind("mousedown",function(e){
e.preventDefault();
var draggerScrollTo=0;
mCSB_buttonScrollLeft=setInterval(function(){
var scrollToSpeed=Math.abs(mCSB_dragger.position().left-draggerScrollTo)*(100/$this.data("scrollButtons-scrollSpeed"));
mCSB_dragger.stop().animate({left:draggerScrollTo},scrollToSpeed,"linear");
$this.mCustomScrollbar("scroll");
},20);
});
var mCSB_buttonLeft_stop=function(e){
e.preventDefault();
clearInterval(mCSB_buttonScrollLeft);
mCSB_dragger.stop();
}
mCSB_buttonLeft.bind("mouseup mouseout",mCSB_buttonLeft_stop);
}else{
mCSB_buttonDown.add(mCSB_buttonUp).unbind("click mousedown mouseup mouseout",mCSB_buttonDown_stop,mCSB_buttonUp_stop);
/*scroll down*/
var mCSB_buttonScrollDown,
mCSB_draggerContainerH=mCSB_draggerContainer.height(),
mCSB_draggerH=mCSB_dragger.height();
mCSB_buttonDown.bind("mousedown",function(e){
e.preventDefault();
var draggerScrollTo=mCSB_draggerContainerH-mCSB_draggerH;
mCSB_buttonScrollDown=setInterval(function(){
var scrollToSpeed=Math.abs(mCSB_dragger.position().top-draggerScrollTo)*(100/$this.data("scrollButtons-scrollSpeed"));
mCSB_dragger.stop().animate({top:draggerScrollTo},scrollToSpeed,"linear");
$this.mCustomScrollbar("scroll");
},20);
});
var mCSB_buttonDown_stop=function(e){
e.preventDefault();
clearInterval(mCSB_buttonScrollDown);
mCSB_dragger.stop();
}
mCSB_buttonDown.bind("mouseup mouseout",mCSB_buttonDown_stop);
/*scroll up*/
var mCSB_buttonScrollUp;
mCSB_buttonUp.bind("mousedown",function(e){
e.preventDefault();
var draggerScrollTo=0;
mCSB_buttonScrollUp=setInterval(function(){
var scrollToSpeed=Math.abs(mCSB_dragger.position().top-draggerScrollTo)*(100/$this.data("scrollButtons-scrollSpeed"));
mCSB_dragger.stop().animate({top:draggerScrollTo},scrollToSpeed,"linear");
$this.mCustomScrollbar("scroll");
},20);
});
var mCSB_buttonUp_stop=function(e){
e.preventDefault();
clearInterval(mCSB_buttonScrollUp);
mCSB_dragger.stop();
}
mCSB_buttonUp.bind("mouseup mouseout",mCSB_buttonUp_stop);
}
}
}
/*scrolling on element focus (e.g. via TAB key)*/
mCustomScrollBox.unbind("focusin").bind("focusin",function(){
mCustomScrollBox.scrollTop(0).scrollLeft(0);
var focusedElem=$(document.activeElement);
if(focusedElem.is("input,textarea,select,button,a[tabindex],area,object")){
if($this.data("horizontalScroll")){
var mCSB_containerX=mCSB_container.position().left,
focusedElemX=focusedElem.position().left,
mCustomScrollBoxW=mCustomScrollBox.width(),
focusedElemW=focusedElem.outerWidth();
if(mCSB_containerX+focusedElemX>=0 && mCSB_containerX+focusedElemX<=mCustomScrollBoxW-focusedElemW){
/*just focus...*/
}else{ /*scroll, then focus*/
var moveDragger=focusedElemX/$this.data("scrollAmount");
if(moveDragger>=mCSB_draggerContainer.width()-mCSB_dragger.width()){ /*max dragger position is bottom*/
moveDragger=mCSB_draggerContainer.width()-mCSB_dragger.width();
}
mCSB_dragger.css("left",moveDragger);
$this.mCustomScrollbar("scroll");
}
}else{
var mCSB_containerY=mCSB_container.position().top,
focusedElemY=focusedElem.position().top,
mCustomScrollBoxH=mCustomScrollBox.height(),
focusedElemH=focusedElem.outerHeight();
if(mCSB_containerY+focusedElemY>=0 && mCSB_containerY+focusedElemY<=mCustomScrollBoxH-focusedElemH){
/*just focus...*/
}else{ /*scroll, then focus*/
var moveDragger=focusedElemY/$this.data("scrollAmount");
if(moveDragger>=mCSB_draggerContainer.height()-mCSB_dragger.height()){ /*max dragger position is bottom*/
moveDragger=mCSB_draggerContainer.height()-mCSB_dragger.height();
}
mCSB_dragger.css("top",moveDragger);
$this.mCustomScrollbar("scroll");
}
}
}
});
},
scroll:function(updated){
var $this=$(this),
mCSB_dragger=$this.find(".mCSB_dragger"),
mCSB_container=$this.find(".mCSB_container"),
mCustomScrollBox=$this.find(".mCustomScrollBox");
if($this.data("horizontalScroll")){
var draggerX=mCSB_dragger.position().left,
targX=-draggerX*$this.data("scrollAmount"),
thisX=mCSB_container.position().left,
posX=Math.round(thisX-targX);
}else{
var draggerY=mCSB_dragger.position().top,
targY=-draggerY*$this.data("scrollAmount"),
thisY=mCSB_container.position().top,
posY=Math.round(thisY-targY);
}
if($.browser.webkit){ /*fix webkit zoom and jquery animate*/
var screenCssPixelRatio=(window.outerWidth-8)/window.innerWidth,
isZoomed=(screenCssPixelRatio<.98 || screenCssPixelRatio>1.02);
}
if($this.data("scrollInertia")===0 || isZoomed){
if($this.data("horizontalScroll")){
mCSB_container.css("left",targX);
}else{
mCSB_container.css("top",targY);
}
if(!updated){
$this.mCustomScrollbar("callbacks",mCustomScrollBox,mCSB_container); /*user custom callback functions*/
}
}else{
if($this.data("horizontalScroll")){
mCSB_container.stop().animate({left: "-="+posX},$this.data("scrollInertia"),$this.data("scrollEasing"),function(){
if(!updated){
$this.mCustomScrollbar("callbacks",mCustomScrollBox,mCSB_container); /*user custom callback functions*/
}
});
}else{
mCSB_container.stop().animate({top: "-="+posY},$this.data("scrollInertia"),$this.data("scrollEasing"),function(){
if(!updated){
$this.mCustomScrollbar("callbacks",mCustomScrollBox,mCSB_container); /*user custom callback functions*/
}
});
}
}
},
scrollTo:function(scrollTo,options){
var defaults={
moveDragger:false,
callback:true
},
options=$.extend(defaults,options),
$this=$(this),
scrollToPos,
mCustomScrollBox=$this.find(".mCustomScrollBox"),
mCSB_container=mCustomScrollBox.children(".mCSB_container");
if(!$(document).data("mCS-is-touch-device")){
var mCSB_draggerContainer=$this.find(".mCSB_draggerContainer"),
mCSB_dragger=mCSB_draggerContainer.children(".mCSB_dragger");
}
var targetPos;
if(scrollTo){
if(typeof(scrollTo)==="number"){ /*if integer, scroll by number of pixels*/
if(options.moveDragger){ /*scroll dragger*/
scrollToPos=scrollTo;
}else{ /*scroll content by default*/
targetPos=scrollTo;
scrollToPos=Math.round(targetPos/$this.data("scrollAmount"));
}
}else if(typeof(scrollTo)==="string"){ /*if string, scroll by element position*/
var target;
if(scrollTo==="top"){ /*scroll to top*/
target=0;
}else if(scrollTo==="bottom" && !$this.data("horizontalScroll")){ /*scroll to bottom*/
target=mCSB_container.outerHeight()-mCustomScrollBox.height();
}else if(scrollTo==="left"){ /*scroll to left*/
target=0;
}else if(scrollTo==="right" && $this.data("horizontalScroll")){ /*scroll to right*/
target=mCSB_container.outerWidth()-mCustomScrollBox.width();
}else if(scrollTo==="first"){ /*scroll to first element position*/
target=$this.find(".mCSB_container").find(":first");
}else if(scrollTo==="last"){ /*scroll to last element position*/
target=$this.find(".mCSB_container").find(":last");
}else{ /*scroll to element position*/
target=$this.find(scrollTo);
}
if(target.length===1){ /*if such unique element exists, scroll to it*/
if($this.data("horizontalScroll")){
targetPos=target.position().left;
}else{
targetPos=target.position().top;
}
if($(document).data("mCS-is-touch-device")){
scrollToPos=targetPos;
}else{
scrollToPos=Math.ceil(targetPos/$this.data("scrollAmount"));
}
}else{
scrollToPos=target;
}
}
/*scroll to*/
if($(document).data("mCS-is-touch-device")){ /*is touch device*/
if($this.data("horizontalScroll")){
mCustomScrollBox.stop().animate({scrollLeft:scrollToPos},$this.data("scrollInertia"),$this.data("scrollEasing"),function(){
if(options.callback){
$this.mCustomScrollbar("callbacks",mCustomScrollBox,mCSB_container);
}
});
}else{
mCustomScrollBox.stop().animate({scrollTop:scrollToPos},$this.data("scrollInertia"),$this.data("scrollEasing"),function(){
if(options.callback){
$this.mCustomScrollbar("callbacks",mCustomScrollBox,mCSB_container);
}
});
}
}else{ /*not touch device*/
if($this.data("horizontalScroll")){
if(scrollToPos>=mCSB_draggerContainer.width()-mCSB_dragger.width()){ /*max dragger position is bottom*/
scrollToPos=mCSB_draggerContainer.width()-mCSB_dragger.width();
}
mCSB_dragger.css("left",scrollToPos);
}else{
if(scrollToPos>=mCSB_draggerContainer.height()-mCSB_dragger.height()){ /*max dragger position is bottom*/
scrollToPos=mCSB_draggerContainer.height()-mCSB_dragger.height();
}
mCSB_dragger.css("top",scrollToPos);
}
if(options.callback){
$this.mCustomScrollbar("scroll");
}else{
$this.mCustomScrollbar("scroll",true);
}
}
}
},
callbacks:function(mCustomScrollBox,mCSB_container){
var $this=$(this);
if(!$(document).data("mCS-is-touch-device")){ /*not touch device*/
if($this.data("horizontalScroll")){
var mCSB_containerX=Math.round(mCSB_container.position().left);
if(mCSB_containerX<0 && mCSB_containerX<=mCustomScrollBox.width()-mCSB_container.outerWidth()+$this.data("onTotalScroll-Offset")){
$this.data("onTotalScroll-Callback").call();
}else{
$this.data("onScroll-Callback").call();
}
}else{
var mCSB_containerY=Math.round(mCSB_container.position().top);
if(mCSB_containerY<0 && mCSB_containerY<=mCustomScrollBox.height()-mCSB_container.outerHeight()+$this.data("onTotalScroll-Offset")){
$this.data("onTotalScroll-Callback").call();
}else{
$this.data("onScroll-Callback").call();
}
}
}else{ /*is touch device*/
if($this.data("horizontalScroll")){
var mCustomScrollBoxX=Math.round(mCustomScrollBox.scrollLeft());
if(mCustomScrollBoxX>0 && mCustomScrollBoxX>=mCSB_container.outerWidth()-$this.width()-$this.data("onTotalScroll-Offset")){
$this.data("onTotalScroll-Callback").call();
}else{
$this.data("onScroll-Callback").call();
}
}else{
var mCustomScrollBoxY=Math.round(mCustomScrollBox.scrollTop());
if(mCustomScrollBoxY>0 && mCustomScrollBoxY>=mCSB_container.outerHeight()-$this.height()-$this.data("onTotalScroll-Offset")){
$this.data("onTotalScroll-Callback").call();
}else{
$this.data("onScroll-Callback").call();
}
}
}
}
}
$.fn.mCustomScrollbar=function(method){
if(methods[method]){
return methods[method].apply(this,Array.prototype.slice.call(arguments,1));
}else if(typeof method==="object" || !method){
return methods.init.apply(this,arguments);
}else{
$.error("Method "+method+" does not exist");
}
};
})(jQuery);
Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment