// page init
jQuery(function() {
	initNav();
	initClear();
	initGallery();
	simultaneousColumns();
})

// simultaneous columns init
function simultaneousColumns(){
	var sidebarHeight = jQuery('#sidebar').height();
	var height = jQuery('#main').height();
	var contentHeight = jQuery('#content').height();
	var container = jQuery('#content .container');
	var lastWidget = jQuery('#sidebar .widget:last-child');
	
	function resize(){
		var lastWidgetHeight = lastWidget.height();
		var newHeight = height - sidebarHeight;
		var widgetHolderPadding = parseInt(lastWidget.find('.content').css('paddingTop'));
		
		var paddings = parseInt(container.css('paddingTop')) + parseInt(container.css('paddingBottom'));
		if(sidebarHeight > contentHeight) container.css({height:height - paddings - 4});
		else lastWidget.find('.content').css({height:lastWidgetHeight + newHeight - widgetHolderPadding + parseInt(jQuery('.widget').css('marginTop'))});
	}
	resize();
}

// scroll gallery init
function initGallery() {
	jQuery('div.carousel').scrollGallery({
		sliderHolder:'.frame',
		autoRotation: true,
		switchTime: 5000,
		duration : 650
	});
}

// clear form fields init
function initClear() {
	clearFormFields({
		clearInputs: true,
		clearTextareas: true,
		passwordFieldText: false,
		addClassFocus: "focus",
		filterClass: "default"
	});
}

// autoscaling nav init
function initNav() {
	initAutoScalingNav({
		menuId: "nav",
		sideClasses: true,
		minPaddings: 10
	});
}

// autoscaling nav function
function initAutoScalingNav(o) {
	if (!o.menuId) o.menuId = "nav";
	if (!o.tag) o.tag = "a";
	if (!o.spacing) o.spacing = 0;
	if (!o.constant) o.constant = 0;
	if (!o.minPaddings) o.minPaddings = 0;
	if (!o.liHovering) o.liHovering = false;
	if (!o.sideClasses) o.sideClasses = false;
	if (!o.equalLinks) o.equalLinks = false;
	if (!o.flexible) o.flexible = false;
	var nav = document.getElementById(o.menuId);
	if(nav) {
		nav.className += " scaling-active";
		var lis = nav.getElementsByTagName("li");
		var asFl = [];
		var lisFl = [];
		var width = 0;
		for (var i=0, j=0; i<lis.length; i++) {
			if(lis[i].parentNode == nav) {
				var t = lis[i].getElementsByTagName(o.tag).item(0);
				asFl.push(t);
				asFl[j++].width = t.offsetWidth;
				lisFl.push(lis[i]);
				if(width < t.offsetWidth) width = t.offsetWidth;
			}
			if(o.liHovering) {
				lis[i].onmouseover = function() {
					this.className += " hover";
				}
				lis[i].onmouseout = function() {
					this.className = this.className.replace("hover", "");
				}
			}
		}
		var menuWidth = nav.clientWidth - asFl.length*o.spacing - o.constant;
		if(o.equalLinks && width * asFl.length < menuWidth) {
			for (var i=0; i<asFl.length; i++) {
				asFl[i].width = width;
			}
		}
		width = getItemsWidth(asFl);
		if(width < menuWidth) {
			var version = navigator.userAgent.toLowerCase();
			for (var i=0; getItemsWidth(asFl) < menuWidth; i++) {
				asFl[i].width++;
				if(!o.flexible) {
					asFl[i].style.width = asFl[i].width + "px";
				}
				if(i >= asFl.length-1) i=-1;
			}
			if(o.flexible) {
				for (var i=0; i<asFl.length; i++) {
					width = (asFl[i].width - o.spacing - o.constant/asFl.length)/menuWidth*100;
					if(i != asFl.length-1) {
						lisFl[i].style.width = width + "%";
					}
					else {
						if(navigator.appName.indexOf("Microsoft Internet Explorer") == -1 || version.indexOf("msie 8") != -1 || version.indexOf("msie 9") != -1)
							lisFl[i].style.width = width + "%";
					}
				}
			}
		}
		else if(o.minPaddings > 0) {
			for (var i=0; i<asFl.length; i++) {
				asFl[i].style.paddingLeft = o.minPaddings + "px";
				asFl[i].style.paddingRight = o.minPaddings + "px";
			}
		}
		if(o.sideClasses) {
			lisFl[0].className += " first-child";
			lisFl[0].getElementsByTagName(o.tag).item(0).className += " first-child-a";
			lisFl[lisFl.length-1].className += " last-child";
			lisFl[lisFl.length-1].getElementsByTagName(o.tag).item(0).className += " last-child-a";
		}
		nav.className += " scaling-ready";
	}
	function getItemsWidth(a) {
		var w = 0;
		for(var q=0; q<a.length; q++) {
			w += a[q].width;
		}
		return w;
	}
}

// clear form fields on focus
function clearFormFields(o) {
	if (o.clearInputs == null) o.clearInputs = true;
	if (o.clearTextareas == null) o.clearTextareas = true;
	if (o.passwordFieldText == null) o.passwordFieldText = false;
	if (o.addClassFocus == null) o.addClassFocus = false;
	if (!o.filterClass) o.filterClass = "default";
	if(o.clearInputs) {
		var inputs = document.getElementsByTagName("input");
		for (var i = 0; i < inputs.length; i++ ) {
			if((inputs[i].type == "text" || inputs[i].type == "password") && inputs[i].className.indexOf(o.filterClass) == -1) {
				inputs[i].valueHtml = inputs[i].value;
				inputs[i].onfocus = function ()	{
					if(this.valueHtml == this.value) this.value = "";
					if(this.fake) {
						inputsSwap(this, this.previousSibling);
						this.previousSibling.focus();
					}
					if(o.addClassFocus && !this.fake) {
						this.className += " " + o.addClassFocus;
						this.parentNode.className += " parent-" + o.addClassFocus;
					}
				}
				inputs[i].onblur = function () {
					if(this.value == "") {
						this.value = this.valueHtml;
						if(o.passwordFieldText && this.type == "password") inputsSwap(this, this.nextSibling);
					}
					if(o.addClassFocus) {
						this.className = this.className.replace(o.addClassFocus, "");
						this.parentNode.className = this.parentNode.className.replace("parent-"+o.addClassFocus, "");
					}
				}
				if(o.passwordFieldText && inputs[i].type == "password") {
					var fakeInput = document.createElement("input");
					fakeInput.type = "text";
					fakeInput.value = inputs[i].value;
					fakeInput.className = inputs[i].className;
					fakeInput.fake = true;
					inputs[i].parentNode.insertBefore(fakeInput, inputs[i].nextSibling);
					inputsSwap(inputs[i], null);
				}
			}
		}
	}
	if(o.clearTextareas) {
		var textareas = document.getElementsByTagName("textarea");
		for(var i=0; i<textareas.length; i++) {
			if(textareas[i].className.indexOf(o.filterClass) == -1) {
				textareas[i].valueHtml = textareas[i].value;
				textareas[i].onfocus = function() {
					if(this.value == this.valueHtml) this.value = "";
					if(o.addClassFocus) {
						this.className += " " + o.addClassFocus;
						this.parentNode.className += " parent-" + o.addClassFocus;
					}
				}
				textareas[i].onblur = function() {
					if(this.value == "") this.value = this.valueHtml;
					if(o.addClassFocus) {
						this.className = this.className.replace(o.addClassFocus, "");
						this.parentNode.className = this.parentNode.className.replace("parent-"+o.addClassFocus, "");
					}
				}
			}
		}
	}
	function inputsSwap(el, el2) {
		if(el) el.style.display = "none";
		if(el2) el2.style.display = "inline";
	}
}

// scrolling gallery plugin
jQuery.fn.scrollGallery = function(_options){
	var _options = jQuery.extend({
		sliderHolder: '>div',
		slider:'>ul',
		slides: '>li',
		pagerLinks:'div.pager a',
		btnPrev:'a.link-prev',
		btnNext:'a.link-next',
		activeClass:'active',
		disabledClass:'disabled',
		generatePagination:'div.pg-holder',
		curNum:'em.scur-num',
		allNum:'em.sall-num',
		circleSlide:true,
		pauseClass:'gallery-paused',
		pauseButton:'none',
		pauseOnHover:true,
		autoRotation:false,
		stopAfterClick:false,
		switchTime:5000,
		duration:650,
		easing:'swing',
		event:'click',
		splitCount:false,
		afterInit:false,
		vertical:false,
		step:false
	},_options);

	return this.each(function(){
		// gallery options
		var _this = jQuery(this);
		var _sliderHolder = jQuery(_options.sliderHolder, _this);
		var _slider = jQuery(_options.slider, _sliderHolder);
		var _slides = jQuery(_options.slides, _slider);
		var _btnPrev = jQuery(_options.btnPrev, _this);
		var _btnNext = jQuery(_options.btnNext, _this);
		var _pagerLinks = jQuery(_options.pagerLinks, _this);
		var _generatePagination = jQuery(_options.generatePagination, _this);
		var _curNum = jQuery(_options.curNum, _this);
		var _allNum = jQuery(_options.allNum, _this);
		var _pauseButton = jQuery(_options.pauseButton, _this);
		var _pauseOnHover = _options.pauseOnHover;
		var _pauseClass = _options.pauseClass;
		var _autoRotation = _options.autoRotation;
		var _activeClass = _options.activeClass;
		var _disabledClass = _options.disabledClass;
		var _easing = _options.easing;
		var _duration = _options.duration;
		var _switchTime = _options.switchTime;
		var _controlEvent = _options.event;
		var _step = _options.step;
		var _vertical = _options.vertical;
		var _circleSlide = _options.circleSlide;
		var _stopAfterClick = _options.stopAfterClick;
		var _afterInit = _options.afterInit;
		var _splitCount = _options.splitCount;

		// gallery init
		if(!_slides.length) return;

		if(_splitCount) {
			var curStep = 0;
			var newSlide = $('<slide>').addClass('split-slide');
			_slides.each(function(){
				newSlide.append(this);
				curStep++;
				if(curStep > _splitCount-1) {
					curStep = 0;
					_slider.append(newSlide);
					newSlide = $('<slide>').addClass('split-slide');
				}
			});
			if(curStep) _slider.append(newSlide);
			_slides = _slider.children();
		}

		var _currentStep = 0;
		var _sumWidth = 0;
		var _sumHeight = 0;
		var _hover = false;
		var _stepWidth;
		var _stepHeight;
		var _stepCount;
		var _offset;
		var _timer;

		_slides.each(function(){
			_sumWidth+=$(this).outerWidth(true);
			_sumHeight+=$(this).outerHeight(true);
		});

		// calculate gallery offset
		function recalcOffsets() {
			if(_vertical) {
				if(_step) {
					_stepHeight = _slides.eq(_currentStep).outerHeight(true);
					_stepCount = Math.ceil((_sumHeight-_sliderHolder.height())/_stepHeight)+1;
					_offset = -_stepHeight*_currentStep;
				} else {
					_stepHeight = _sliderHolder.height();
					_stepCount = Math.ceil(_sumHeight/_stepHeight);
					_offset = -_stepHeight*_currentStep;
					if(_offset < _stepHeight-_sumHeight) _offset = _stepHeight-_sumHeight;
				}
			} else {
				if(_step) {
					_stepWidth = _slides.eq(_currentStep).outerWidth(true)*_step;
					_stepCount = Math.ceil((_sumWidth-_sliderHolder.width())/_stepWidth)+1;
					_offset = -_stepWidth*_currentStep;
					if(_offset < _sliderHolder.width()-_sumWidth) _offset = _sliderHolder.width()-_sumWidth;
				} else {
					_stepWidth = _sliderHolder.width();
					_stepCount = Math.ceil(_sumWidth/_stepWidth);
					_offset = -_stepWidth*_currentStep;
					if(_offset < _stepWidth-_sumWidth) _offset = _stepWidth-_sumWidth;
				}
			}
		}

		// gallery control
		if(_btnPrev.length) {
			_btnPrev.bind(_controlEvent,function(){
				if(_stopAfterClick) stopAutoSlide();
				prevSlide();
				return false;
			});
		}
		if(_btnNext.length) {
			_btnNext.bind(_controlEvent,function(){
				if(_stopAfterClick) stopAutoSlide();
				nextSlide();
				return false;
			});
		}
		if(_generatePagination.length) {
			_generatePagination.empty();
			recalcOffsets();
			var _list = $('<ul />');
			for(var i=0; i<_stepCount; i++) $('<li><a href="#">'+(i+1)+'</a></li>').appendTo(_list);
			_list.appendTo(_generatePagination);
			_pagerLinks = _list.children();
		}
		if(_pagerLinks.length) {
			_pagerLinks.each(function(_ind){
				jQuery(this).bind(_controlEvent,function(){
					if(_currentStep != _ind) {
						if(_stopAfterClick) stopAutoSlide();
						_currentStep = _ind;
						switchSlide();
					}
					return false;
				});
			});
		}

		// gallery animation
		function prevSlide() {
			recalcOffsets();
			if(_currentStep > 0) _currentStep--;
			else if(_circleSlide) _currentStep = _stepCount-1;
			switchSlide();
		}
		function nextSlide() {
			recalcOffsets();
			if(_currentStep < _stepCount-1) _currentStep++;
			else if(_circleSlide) _currentStep = 0;
			switchSlide();
		}
		function refreshStatus() {
			if(_pagerLinks.length) _pagerLinks.removeClass(_activeClass).eq(_currentStep).addClass(_activeClass);
			if(!_circleSlide) {
				_btnPrev.removeClass(_disabledClass);
				_btnNext.removeClass(_disabledClass);
				if(_currentStep == 0) _btnPrev.addClass(_disabledClass);
				if(_currentStep == _stepCount-1) _btnNext.addClass(_disabledClass);
			}
			if(_curNum.length) _curNum.text(_currentStep+1);
			if(_allNum.length) _allNum.text(_stepCount);
		}
		function switchSlide() {
			recalcOffsets();
			if(_vertical) _slider.animate({marginTop:_offset},{duration:_duration,queue:false,easing:_easing});
			else _slider.animate({marginLeft:_offset},{duration:_duration,queue:false,easing:_easing});
			refreshStatus();
			autoSlide();
		}

		// autoslide function
		function stopAutoSlide() {
			if(_timer) clearTimeout(_timer);
			_autoRotation = false;
		}
		function autoSlide() {
			if(!_autoRotation || _hover) return;
			if(_timer) clearTimeout(_timer);
			_timer = setTimeout(nextSlide,_switchTime+_duration);
		}
		if(_pauseOnHover) {
			_this.hover(function(){
				_hover = true;
				if(_timer) clearTimeout(_timer);
			},function(){
				_hover = false;
				autoSlide();
			});
		}
		recalcOffsets();
		refreshStatus();
		autoSlide();

		// pause buttton
		if(_pauseButton.length) {
			_pauseButton.click(function(){
				if(_this.hasClass(_pauseClass)) {
					_this.removeClass(_pauseClass);
					_autoRotation = true;
					autoSlide();
				} else {
					_this.addClass(_pauseClass);
					stopAutoSlide();
				}
				return false;
			});
		}

		if(_afterInit && typeof _afterInit === 'function') _afterInit(_this, _slides);
	});
}