leveller.min.js

(function(factory){if(typeof define==="function"&&define.amd){define(["jquery"],factory)}else if(typeof exports==="object"){factory(require("jquery"))}else{factory(jQuery)}})(function($){var Leveller=function(elements,options){this.$elements=$(elements);this.options=$.extend({},Leveller.DEFAULTS,options)};Leveller.DATA_KEY="plugin_leveller";Leveller.DEFAULTS={level:true,resetBefore:true,cssProperty:"min-height",heightMethod:"outerHeight",offsetMethod:"offset",alignment:"top"};Leveller.prototype.level=function(){var i=0;var perRow=this.options.columns||this.getPerRow();if(this.options.resetBefore){this.reset()}for(;i<this.$elements.length;i+=perRow){this.adjustElements(this.$elements.slice(i,i+perRow))}};Leveller.prototype.reset=function(){var $styleElements=this.options.cssSelector?this.$elements.find(this.options.cssSelector):this.$elements;$styleElements.css(this.options.cssProperty,"")};Leveller.prototype.adjustElements=function($elements){var i=0;var targetHeight=this.getTallestHeight($elements);for(;i<$elements.length;i++){this.adjustElement($elements.eq(i),targetHeight)}};Leveller.prototype.adjustElement=function($element,targetHeight){var currentHeight=$element[this.options.heightMethod]();var diff=targetHeight-currentHeight;if(diff===0)return;var isHeightProperty=this.options.cssProperty.indexOf("eight")>0;var $styleElement=this.options.cssSelector?$element.find(this.options.cssSelector):$element;var styleValue;if(isHeightProperty&&this.options.cssSelector){styleValue=$styleElement[this.options.heightMethod]()+diff}else if(isHeightProperty){styleValue=targetHeight}else{styleValue=parseInt($styleElement.css(this.options.cssProperty),10)+diff}if(typeof this.options.adjustBy==="string"){styleValue+=parseInt($element.css(this.options.adjustBy),10)}else if(typeof this.options.adjustBy==="number"){styleValue+=this.options.adjustBy}$styleElement.css(this.options.cssProperty,styleValue)};Leveller.prototype.getPerRow=function(){var i=0;var offset={};var $element,current,last;for(;i<this.$elements.length;i++){$element=this.$elements.eq(i);offset=$element[this.options.offsetMethod]();current=offset.top;if(this.options.alignment==="middle"){current+=$element[this.options.heightMethod]()/2}else if(this.options.alignment==="bottom"){current+=$element[this.options.heightMethod]()}if(typeof last!=="undefined"&&current>last){break}last=current}return i};Leveller.prototype.getTallestHeight=function($elements){var heightMethod=this.options.heightMethod;$elements=$elements||this.$elements;var heights=$.map($elements,function(element,i){return $(element)[heightMethod]()});return Math.max.apply(null,heights)};function Plugin(option){var data=this.data(Leveller.DATA_KEY);var options=$.extend({},Leveller.DEFAULTS,typeof option==="object"&&option);if(!data){if(options.level&&option==="reset")options.level=false;this.data(Leveller.DATA_KEY,data=new Leveller(this,options))}if(typeof option==="string"){data[option]()}else if(options.level){data.level()}return this}$.fn.leveller=Plugin;$.fn.leveller.Constructor=Leveller});