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jquery.wrecker.js
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jquery.wrecker.js
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/**
* jQuery Wrecker v0.2
* Responsive Equal-Height Columns and Rows
* http://www.svachon.com/blog/wrecker-responsive-equal-height-columns-and-rows
*
* Licensed under the MIT license.
* Copyright 2013 Steven Vachon
*/
(function($)
{
$.Wrecker = function()
{
// Variables
var columnCount = 0;
var element;
var previousColumnCount = 0;
var settings = {
itemSelector : "",
maxColumns : 1,
responsiveColumns : [ /*{800:1}*/ ] // Had to nest this way because not all browsers loop through objects in correct order
};
function init(options, $element)
{
element = $( $element );
changeSettings(options);
$(window).on("resize", handleResize);
calculateGrid();
}
function calculateGrid()
{
var newColumnCount = settings.maxColumns;
var windowWidth = $(window).innerWidth();
for (var i=0, numResponsiveColumns=settings.responsiveColumns.length; i<numResponsiveColumns; i++)
{
var currentSize = settings.responsiveColumns[i];
for (var j in currentSize)
{
if (j >= windowWidth)
{
newColumnCount = currentSize[j];
}
}
}
if (newColumnCount!=columnCount && newColumnCount>0)
{
previousColumnCount = columnCount;
columnCount = newColumnCount;
updateGrid();
}
}
function changeSettings(options)
{
// IE6-8 do not support responsive CSS, so the columns should be set to default (max) size
if (!$.support.leadingWhitespace)
{
options.responsiveColumns = [];
}
settings = $.extend(settings, options);
}
function destroy()
{
$(window).off("resize", handleResize);
columnCount = 0;
updateGrid();
element.removeData("wrecker");
}
function handleResize(event)
{
calculateGrid();
}
function updateGrid()
{
// Remove any row containers
element.children("div.wrecker-row").children().unwrap();
var cells = element.children(settings.itemSelector);
if (columnCount > 1)
{
var numCells = cells.length;
var startIndex = 0;
var count = 0;
// Add row containers
cells.each(function(i)
{
if (++count == 1)
{
startIndex = i;
}
if (count>=columnCount || i>=numCells-1)
{
cells.slice(startIndex,i+1).wrapAll('<div class="wrecker-row" style="display:table-row"/>');
count = 0;
}
// Since Wrecker styles are removed for single columns, they must be re-added
if (previousColumnCount <= 1)
{
$(this).addClass("wrecker-cell").css({display:"table-cell", float:"none"});
}
});
element.addClass("wrecker").css("display", "table");
}
else
{
// Remove Wrecker styles
cells.removeClass("wrecker-cell").css({display:"", float:""});
element.removeClass("wrecker").css("display", "");
}
}
// Public Methods
this.changeSettings = changeSettings;
this.destroy = destroy;
this.reload = updateGrid;
// Initiate
init.apply(this, arguments);
};
$.fn.wrecker = function(options)
{
var optionsString = (typeof options === "string");
var args = Array.prototype.slice.call(arguments, 1);
this.each(function(i)
{
var $this = $(this);
var instance = $this.data("wrecker");
if (optionsString)
{
if (!instance)
{
console.error("Cannot call Wrecker methods prior to initialization; attempted to call method \""+ options +"\"");
return;
}
if (!$.isFunction(instance[options]))
{
console.error("No such Wrecker method \""+ options +"\"");
return;
}
instance[options].apply(instance, args);
}
else
{
options = options || {};
if (!instance)
{
$this.data("wrecker", new $.Wrecker(options,this) );
}
else
{
instance.changeSettings(options);
}
}
});
return this;
}
})(jQuery);