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Vestride_Shuffle/jquery.shuffle.js

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JavaScript

// IMPORTANT!
// If you're already using Modernizr, delete it from this file. If you don't know what Modernizr is, leave it :)
/* Modernizr 2.6.2 (Custom Build) | MIT & BSD
* Build: http://modernizr.com/download/#-csstransforms-csstransforms3d-csstransitions-prefixed-teststyles-testprop-testallprops-prefixes-domprefixes
*/
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/**
* jQuery Shuffle Plugin
* Uses CSS Transforms to filter down a grid of items (degrades to jQuery's animate).
* Inspired by Isotope http://isotope.metafizzy.co/
* Use it for whatever you want!
* @author Glen Cheney (http://glencheney.com)
* @version 1.5
* @date 9/18/12
*/
;(function($, Modernizr) {
'use strict';
$.fn.sorted = function(options) {
var opts = $.extend({}, $.fn.sorted.defaults, options),
arr = this.get();
// Sort the elements by the opts.by function.
// If we don't have opts.by, default to DOM order
if (opts.by !== $.noop && opts.by !== null && opts.by !== undefined) {
arr.sort(function(a, b) {
var valA = opts.by($(a));
var valB = opts.by($(b));
return (valA < valB) ? -1 : (valA > valB) ? 1 : 0;
});
}
if (opts.reverse) {
arr.reverse();
}
return arr;
};
$.fn.sorted.defaults = {
reverse: false,
by: null
};
var Shuffle = function($container, options) {
var self = this;
$.extend(self, $.fn.shuffle.options, options, $.fn.shuffle.settings);
self.$container = $container;
self.$items = self.$container.children();
self.$item = self.$items.first();
self.itemWidth = self.$item.outerWidth();
self.itemHeight = self.$item.outerHeight();
self.marginTop = parseInt(self.$item.css('marginTop'), 10);
self.marginRight = parseInt(self.$item.css('marginRight'), 10);
self.itemsPerRow = self.getItemsPerRow();
self.transitionName = self.prefixed('transition'),
self.transform = self.getPrefixed('transform');
// Get transitionend event name
var transEndEventNames = {
'WebkitTransition' : 'webkitTransitionEnd',
'MozTransition' : 'transitionend',
'OTransition' : 'oTransitionEnd',
'msTransition' : 'MSTransitionEnd',
'transition' : 'transitionend'
};
self.transitionEndName = transEndEventNames[ self.transitionName ];
// CSS for each item
self.itemCss = {
position: 'absolute',
top: 0,
left: 0,
opacity: 1
};
// Set up css for transitions
self.$container.css('position', 'relative').get(0).style[self.transitionName] = 'height ' + self.speed + 'ms ' + self.easing;
self.$items.each(function() {
$(this).css(self.itemCss);
// Set CSS transition for transforms and opacity
if (self.supported) {
this.style[self.transitionName] = self.transform + ' ' + self.speed + 'ms ' + self.easing + ', opacity ' + self.speed + 'ms ' + self.easing;
}
// Remove margins, we don't need them anymore
this.style.marginTop = 0;
this.style.marginRight = 0;
});
// http://stackoverflow.com/questions/1852751/window-resize-event-firing-in-internet-explorer
self.windowHeight = $(window).height();
self.windowWidth = $(window).width();
$(window).on('resize.shuffle', function () {
var height = $(window).height(),
width = $(window).width();
if (width !== self.windowWidth || height !== self.windowHeight) {
self.resized();
self.windowHeight = height;
self.windowWidth = width;
}
});
// Do it
self.shuffle(self.group);
};
Shuffle.prototype = {
constructor: Shuffle,
/**
* The magic. This is what makes the plugin 'shuffle'
*/
shuffle : function(category) {
var self = this;
if (!category) {
category = 'all';
}
// Default is to show all items
self.$items.removeClass('concealed filtered');
// Loop through each item and use provided function to determine
// whether to hide it or not.
if ($.isFunction(category)) {
self.$items.each(function() {
var $item = $(this);
$item.addClass(category($item, self) ? 'filtered' : 'concealed');
});
}
// Otherwise we've been passed a category to filter by
else {
self.group = category;
if (category !== 'all') {
self.$items.each(function() {
var keys = $(this).data('groups');
if ($.inArray(category, keys) === -1) {
$(this).addClass('concealed');
return;
} else {
$(this).addClass('filtered');
}
});
}
// category === all, add filtered class to everything
else {
self.$items.addClass('filtered');
}
}
// How many filtered elements?
self.visibleItems = self.$items.filter('.filtered').length;
// Shrink each concealed item
self.fire('shrink');
self.shrink();
// Update transforms on .filtered elements so they will animate to their new positions
self.fire('filter');
self.filter();
// Adjust the height of the container
self.resizeContainer();
},
getItemsPerRow : function() {
var self = this,
totalWidth = self.$container.width(),
num = Math.floor(totalWidth / self.itemWidth);
// Make sure the items will fit with margins too
if (num * (self.itemWidth + self.marginRight) - self.marginRight > totalWidth) {
num -= 1;
}
return num;
},
/**
* Adjust the height of the grid
*/
resizeContainer : function() {
var self = this,
gridHeight = (Math.ceil(self.visibleItems / self.itemsPerRow) * (self.itemHeight + self.marginTop)) - self.marginTop;
self.$container.css('height', gridHeight + 'px');
},
/**
* Fire events with .shuffle namespace
*/
fire : function(name) {
this.$container.trigger(name + '.shuffle', [this]);
},
/**
* Hides the elements that don't match our filter
*/
shrink : function() {
var self = this,
$concealed = self.$items.filter('.concealed');
// Abort if no items
if ($concealed.length === 0) {
return;
}
self.shrinkTransitionEnded = false;
$concealed.each(function() {
var $this = $(this),
x = parseInt($this.attr('data-x'), 10),
y = parseInt($this.attr('data-y'), 10);
if (!x) x = 0;
if (!y) y = 0;
self.transition({
from: 'shrink',
$this: $this,
x: x,
y: y,
left: (x + (self.itemWidth / 2)) + 'px',
top: (y + (self.itemHeight / 2)) + 'px',
scale : 0.001,
opacity: 0,
height: '0px',
width: '0px',
callback: self.shrinkEnd
});
});
},
/**
* Loops through each item that should be shown
* Calculates the x and y position and then transitions it
* @param {array} items - array of items that will be shown/layed out in order in their array.
* Because jQuery collection are always ordered in DOM order, we can't pass a jq collection
* @param {function} complete callback function
*/
layout: function(items, fn) {
var self = this,
y = 0;
// Abort if no items
if (items.length === 0) {
return;
}
self.layoutTransitionEnded = false;
$.each(items, function(index) {
var $this = $(items[index]),
x = (index % self.itemsPerRow) * (self.itemWidth + self.marginRight),
row = Math.floor(index / self.itemsPerRow);
if (index % self.itemsPerRow === 0) {
y = row * (self.itemHeight + self.marginTop);
}
// Save data for shrink
$this.attr({'data-x' : x, 'data-y' : y});
self.transition({
from: 'layout',
$this: $this,
x: x,
y: y,
left: x + 'px',
top: y + 'px',
scale : 1,
opacity: 1,
height: self.itemHeight + 'px',
width: self.itemWidth + 'px',
callback: fn
});
});
},
/**
* Grabs the .filtered elements and passes them to layout
*/
filter : function() {
var self = this;
// If we've already sorted the elements, keep them sorted
if (self.keepSorted && self.lastSort) {
self.sort(self.lastSort, true);
} else {
var items = self.$items.filter('.filtered').get();
self.layout(items, self.filterEnd);
}
},
/**
* Gets the .filtered elements, sorts them, and passes them to layout
*
* @param {object} opts the options object for the sorted plugin
* @param {bool} [fromFilter] was called from Shuffle.filter method.
*/
sort: function(opts, fromFilter) {
var self = this,
items = self.$items.filter('.filtered').sorted(opts);
self.layout(items, function() {
if (fromFilter) {
self.filterEnd();
}
self.sortEnd();
});
self.lastSort = opts;
},
/**
* Uses Modernizr's prefixed() to get the correct vendor property name and sets it using jQuery .css()
*
* @param {jq} $el the jquery object to set the css on
* @param {string} prop the property to set (e.g. 'transition')
* @param {string} value the value of the prop
*/
setPrefixedCss : function($el, prop, value) {
$el.css(this.prefixed(prop), value);
},
/**
* Returns things like -webkit-transition or -moz-box-sizing
*
* @param {string} property to be prefixed.
* @return {string} the prefixed css property
*/
getPrefixed : function(prop) {
var styleName = this.prefixed(prop);
return styleName ? styleName.replace(/([A-Z])/g, function(str,m1){ return '-' + m1.toLowerCase(); }).replace(/^ms-/,'-ms-') : styleName;
},
/**
* Transitions an item in the grid
*
* @param {object} opts options
* @param {jQuery} opts.$this jQuery object representing the current item
* @param {int} opts.x translate's x
* @param {int} opts.y translate's y
* @param {String} opts.left left position (used when no transforms available)
* @param {String} opts.top top position (used when no transforms available)
* @param {float} opts.scale amount to scale the item
* @param {float} opts.opacity opacity of the item
* @param {String} opts.height the height of the item (used when no transforms available)
* @param {String} opts.width the width of the item (used when no transforms available)
* @param {function} opts.callback complete function for the animation
*/
transition: function(opts) {
var self = this,
transform,
// Only fire callback once per collection's transition
complete = function() {
if (!self.layoutTransitionEnded && opts.from === 'layout') {
opts.callback.call(self);
self.layoutTransitionEnded = true;
} else if (!self.shrinkTransitionEnded && opts.from === 'shrink') {
opts.callback.call(self);
self.shrinkTransitionEnded = true;
}
};
// Use CSS Transforms if we have them
if (self.supported) {
if (self.threeD) {
transform = 'translate3d(' + opts.x + 'px, ' + opts.y + 'px, 0) scale3d(' + opts.scale + ', ' + opts.scale + ', 1)';
} else {
transform = 'translate(' + opts.x + 'px, ' + opts.y + 'px) scale(' + opts.scale + ', ' + opts.scale + ')';
}
// Update css to trigger CSS Animation
opts.$this.css('opacity' , opts.opacity);
self.setPrefixedCss(opts.$this, 'transform', transform);
opts.$this.one(self.transitionEndName, complete);
} else {
// Use jQuery to animate left/top
opts.$this.stop().animate({
left: opts.left,
top: opts.top,
opacity: opts.opacity,
height: opts.height,
width: opts.width
}, self.speed, 'swing', complete);
}
},
/**
* On window resize, recalculate the width, height, and items per row.
*/
resized: function() {
var self = this;
self.itemWidth = self.$items.filter('.filtered').outerWidth();
self.itemHeight = self.$items.filter('.filtered').outerHeight();
self.itemsPerRow = self.getItemsPerRow();
self.filter();
self.resizeContainer();
},
shrinkEnd: function() {
this.fire('shrunk');
},
filterEnd: function() {
this.fire('filtered');
},
sortEnd: function() {
this.fire('sorted');
}
};
// Plugin definition
$.fn.shuffle = function(opts, sortObj) {
return this.each(function() {
var $this = $(this),
shuffle = $this.data('shuffle');
// If we don't have a stored shuffle, make a new one and save it
if (!shuffle) {
shuffle = new Shuffle($this, opts);
$this.data('shuffle', shuffle);
}
// If passed a string, lets decide what to do with it. Or they've provided a function to filter by
if ($.isFunction(opts) || (typeof opts === 'string' && opts !== 'sort')) {
shuffle.shuffle(opts);
// Key should be an object with propreties reversed and by.
} else if (typeof opts === 'string' && opts === 'sort') {
shuffle.sort(sortObj);
}
});
};
// Overrideable options
$.fn.shuffle.options = {
group : 'all',
speed : 800,
easing : 'ease-out',
keepSorted: true
};
// Not overrideable
$.fn.shuffle.settings = {
supported: Modernizr.csstransforms && Modernizr.csstransitions,
prefixed: Modernizr.prefixed,
threeD: Modernizr.csstransforms3d
};
})(jQuery, Modernizr);