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+/*!
+ * Packery PACKAGED v2.0.0
+ * Gapless, draggable grid layouts
+ *
+ * Licensed GPLv3 for open source use
+ * or Packery Commercial License for commercial use
+ *
+ * http://packery.metafizzy.co
+ * Copyright 2016 Metafizzy
+ */
+
+/**
+ * Bridget makes jQuery widgets
+ * v2.0.0
+ * MIT license
+ */
+
+/* jshint browser: true, strict: true, undef: true, unused: true */
+
+( function( window, factory ) {
+ 'use strict';
+ /* globals define: false, module: false, require: false */
+
+ if ( typeof define == 'function' && define.amd ) {
+ // AMD
+ define( 'jquery-bridget/jquery-bridget',[ 'jquery' ], function( jQuery ) {
+ factory( window, jQuery );
+ });
+ } else if ( typeof module == 'object' && module.exports ) {
+ // CommonJS
+ module.exports = factory(
+ window,
+ require('jquery')
+ );
+ } else {
+ // browser global
+ window.jQueryBridget = factory(
+ window,
+ window.jQuery
+ );
+ }
+
+}( window, function factory( window, jQuery ) {
+'use strict';
+
+// ----- utils ----- //
+
+var arraySlice = Array.prototype.slice;
+
+// helper function for logging errors
+// $.error breaks jQuery chaining
+var console = window.console;
+var logError = typeof console == 'undefined' ? function() {} :
+ function( message ) {
+ console.error( message );
+ };
+
+// ----- jQueryBridget ----- //
+
+function jQueryBridget( namespace, PluginClass, $ ) {
+ $ = $ || jQuery || window.jQuery;
+ if ( !$ ) {
+ return;
+ }
+
+ // add option method -> $().plugin('option', {...})
+ if ( !PluginClass.prototype.option ) {
+ // option setter
+ PluginClass.prototype.option = function( opts ) {
+ // bail out if not an object
+ if ( !$.isPlainObject( opts ) ){
+ return;
+ }
+ this.options = $.extend( true, this.options, opts );
+ };
+ }
+
+ // make jQuery plugin
+ $.fn[ namespace ] = function( arg0 /*, arg1 */ ) {
+ if ( typeof arg0 == 'string' ) {
+ // method call $().plugin( 'methodName', { options } )
+ // shift arguments by 1
+ var args = arraySlice.call( arguments, 1 );
+ return methodCall( this, arg0, args );
+ }
+ // just $().plugin({ options })
+ plainCall( this, arg0 );
+ return this;
+ };
+
+ // $().plugin('methodName')
+ function methodCall( $elems, methodName, args ) {
+ var returnValue;
+ var pluginMethodStr = '$().' + namespace + '("' + methodName + '")';
+
+ $elems.each( function( i, elem ) {
+ // get instance
+ var instance = $.data( elem, namespace );
+ if ( !instance ) {
+ logError( namespace + ' not initialized. Cannot call methods, i.e. ' +
+ pluginMethodStr );
+ return;
+ }
+
+ var method = instance[ methodName ];
+ if ( !method || methodName.charAt(0) == '_' ) {
+ logError( pluginMethodStr + ' is not a valid method' );
+ return;
+ }
+
+ // apply method, get return value
+ var value = method.apply( instance, args );
+ // set return value if value is returned, use only first value
+ returnValue = returnValue === undefined ? value : returnValue;
+ });
+
+ return returnValue !== undefined ? returnValue : $elems;
+ }
+
+ function plainCall( $elems, options ) {
+ $elems.each( function( i, elem ) {
+ var instance = $.data( elem, namespace );
+ if ( instance ) {
+ // set options & init
+ instance.option( options );
+ instance._init();
+ } else {
+ // initialize new instance
+ instance = new PluginClass( elem, options );
+ $.data( elem, namespace, instance );
+ }
+ });
+ }
+
+ updateJQuery( $ );
+
+}
+
+// ----- updateJQuery ----- //
+
+// set $.bridget for v1 backwards compatibility
+function updateJQuery( $ ) {
+ if ( !$ || ( $ && $.bridget ) ) {
+ return;
+ }
+ $.bridget = jQueryBridget;
+}
+
+updateJQuery( jQuery || window.jQuery );
+
+// ----- ----- //
+
+return jQueryBridget;
+
+}));
+
+/*!
+ * getSize v2.0.2
+ * measure size of elements
+ * MIT license
+ */
+
+/*jshint browser: true, strict: true, undef: true, unused: true */
+/*global define: false, module: false, console: false */
+
+( function( window, factory ) {
+ 'use strict';
+
+ if ( typeof define == 'function' && define.amd ) {
+ // AMD
+ define( 'get-size/get-size',[],function() {
+ return factory();
+ });
+ } else if ( typeof module == 'object' && module.exports ) {
+ // CommonJS
+ module.exports = factory();
+ } else {
+ // browser global
+ window.getSize = factory();
+ }
+
+})( window, function factory() {
+'use strict';
+
+// -------------------------- helpers -------------------------- //
+
+// get a number from a string, not a percentage
+function getStyleSize( value ) {
+ var num = parseFloat( value );
+ // not a percent like '100%', and a number
+ var isValid = value.indexOf('%') == -1 && !isNaN( num );
+ return isValid && num;
+}
+
+function noop() {}
+
+var logError = typeof console == 'undefined' ? noop :
+ function( message ) {
+ console.error( message );
+ };
+
+// -------------------------- measurements -------------------------- //
+
+var measurements = [
+ 'paddingLeft',
+ 'paddingRight',
+ 'paddingTop',
+ 'paddingBottom',
+ 'marginLeft',
+ 'marginRight',
+ 'marginTop',
+ 'marginBottom',
+ 'borderLeftWidth',
+ 'borderRightWidth',
+ 'borderTopWidth',
+ 'borderBottomWidth'
+];
+
+var measurementsLength = measurements.length;
+
+function getZeroSize() {
+ var size = {
+ width: 0,
+ height: 0,
+ innerWidth: 0,
+ innerHeight: 0,
+ outerWidth: 0,
+ outerHeight: 0
+ };
+ for ( var i=0; i < measurementsLength; i++ ) {
+ var measurement = measurements[i];
+ size[ measurement ] = 0;
+ }
+ return size;
+}
+
+// -------------------------- getStyle -------------------------- //
+
+/**
+ * getStyle, get style of element, check for Firefox bug
+ * https://bugzilla.mozilla.org/show_bug.cgi?id=548397
+ */
+function getStyle( elem ) {
+ var style = getComputedStyle( elem );
+ if ( !style ) {
+ logError( 'Style returned ' + style +
+ '. Are you running this code in a hidden iframe on Firefox? ' +
+ 'See http://bit.ly/getsizebug1' );
+ }
+ return style;
+}
+
+// -------------------------- setup -------------------------- //
+
+var isSetup = false;
+
+var isBoxSizeOuter;
+
+/**
+ * setup
+ * check isBoxSizerOuter
+ * do on first getSize() rather than on page load for Firefox bug
+ */
+function setup() {
+ // setup once
+ if ( isSetup ) {
+ return;
+ }
+ isSetup = true;
+
+ // -------------------------- box sizing -------------------------- //
+
+ /**
+ * WebKit measures the outer-width on style.width on border-box elems
+ * IE & Firefox<29 measures the inner-width
+ */
+ var div = document.createElement('div');
+ div.style.width = '200px';
+ div.style.padding = '1px 2px 3px 4px';
+ div.style.borderStyle = 'solid';
+ div.style.borderWidth = '1px 2px 3px 4px';
+ div.style.boxSizing = 'border-box';
+
+ var body = document.body || document.documentElement;
+ body.appendChild( div );
+ var style = getStyle( div );
+
+ getSize.isBoxSizeOuter = isBoxSizeOuter = getStyleSize( style.width ) == 200;
+ body.removeChild( div );
+
+}
+
+// -------------------------- getSize -------------------------- //
+
+function getSize( elem ) {
+ setup();
+
+ // use querySeletor if elem is string
+ if ( typeof elem == 'string' ) {
+ elem = document.querySelector( elem );
+ }
+
+ // do not proceed on non-objects
+ if ( !elem || typeof elem != 'object' || !elem.nodeType ) {
+ return;
+ }
+
+ var style = getStyle( elem );
+
+ // if hidden, everything is 0
+ if ( style.display == 'none' ) {
+ return getZeroSize();
+ }
+
+ var size = {};
+ size.width = elem.offsetWidth;
+ size.height = elem.offsetHeight;
+
+ var isBorderBox = size.isBorderBox = style.boxSizing == 'border-box';
+
+ // get all measurements
+ for ( var i=0; i < measurementsLength; i++ ) {
+ var measurement = measurements[i];
+ var value = style[ measurement ];
+ var num = parseFloat( value );
+ // any 'auto', 'medium' value will be 0
+ size[ measurement ] = !isNaN( num ) ? num : 0;
+ }
+
+ var paddingWidth = size.paddingLeft + size.paddingRight;
+ var paddingHeight = size.paddingTop + size.paddingBottom;
+ var marginWidth = size.marginLeft + size.marginRight;
+ var marginHeight = size.marginTop + size.marginBottom;
+ var borderWidth = size.borderLeftWidth + size.borderRightWidth;
+ var borderHeight = size.borderTopWidth + size.borderBottomWidth;
+
+ var isBorderBoxSizeOuter = isBorderBox && isBoxSizeOuter;
+
+ // overwrite width and height if we can get it from style
+ var styleWidth = getStyleSize( style.width );
+ if ( styleWidth !== false ) {
+ size.width = styleWidth +
+ // add padding and border unless it's already including it
+ ( isBorderBoxSizeOuter ? 0 : paddingWidth + borderWidth );
+ }
+
+ var styleHeight = getStyleSize( style.height );
+ if ( styleHeight !== false ) {
+ size.height = styleHeight +
+ // add padding and border unless it's already including it
+ ( isBorderBoxSizeOuter ? 0 : paddingHeight + borderHeight );
+ }
+
+ size.innerWidth = size.width - ( paddingWidth + borderWidth );
+ size.innerHeight = size.height - ( paddingHeight + borderHeight );
+
+ size.outerWidth = size.width + marginWidth;
+ size.outerHeight = size.height + marginHeight;
+
+ return size;
+}
+
+return getSize;
+
+});
+
+/**
+ * EvEmitter v1.0.2
+ * Lil' event emitter
+ * MIT License
+ */
+
+/* jshint unused: true, undef: true, strict: true */
+
+( function( global, factory ) {
+ // universal module definition
+ /* jshint strict: false */ /* globals define, module */
+ if ( typeof define == 'function' && define.amd ) {
+ // AMD - RequireJS
+ define( 'ev-emitter/ev-emitter',factory );
+ } else if ( typeof module == 'object' && module.exports ) {
+ // CommonJS - Browserify, Webpack
+ module.exports = factory();
+ } else {
+ // Browser globals
+ global.EvEmitter = factory();
+ }
+
+}( this, function() {
+
+
+
+function EvEmitter() {}
+
+var proto = EvEmitter.prototype;
+
+proto.on = function( eventName, listener ) {
+ if ( !eventName || !listener ) {
+ return;
+ }
+ // set events hash
+ var events = this._events = this._events || {};
+ // set listeners array
+ var listeners = events[ eventName ] = events[ eventName ] || [];
+ // only add once
+ if ( listeners.indexOf( listener ) == -1 ) {
+ listeners.push( listener );
+ }
+
+ return this;
+};
+
+proto.once = function( eventName, listener ) {
+ if ( !eventName || !listener ) {
+ return;
+ }
+ // add event
+ this.on( eventName, listener );
+ // set once flag
+ // set onceEvents hash
+ var onceEvents = this._onceEvents = this._onceEvents || {};
+ // set onceListeners object
+ var onceListeners = onceEvents[ eventName ] = onceEvents[ eventName ] || {};
+ // set flag
+ onceListeners[ listener ] = true;
+
+ return this;
+};
+
+proto.off = function( eventName, listener ) {
+ var listeners = this._events && this._events[ eventName ];
+ if ( !listeners || !listeners.length ) {
+ return;
+ }
+ var index = listeners.indexOf( listener );
+ if ( index != -1 ) {
+ listeners.splice( index, 1 );
+ }
+
+ return this;
+};
+
+proto.emitEvent = function( eventName, args ) {
+ var listeners = this._events && this._events[ eventName ];
+ if ( !listeners || !listeners.length ) {
+ return;
+ }
+ var i = 0;
+ var listener = listeners[i];
+ args = args || [];
+ // once stuff
+ var onceListeners = this._onceEvents && this._onceEvents[ eventName ];
+
+ while ( listener ) {
+ var isOnce = onceListeners && onceListeners[ listener ];
+ if ( isOnce ) {
+ // remove listener
+ // remove before trigger to prevent recursion
+ this.off( eventName, listener );
+ // unset once flag
+ delete onceListeners[ listener ];
+ }
+ // trigger listener
+ listener.apply( this, args );
+ // get next listener
+ i += isOnce ? 0 : 1;
+ listener = listeners[i];
+ }
+
+ return this;
+};
+
+return EvEmitter;
+
+}));
+
+/**
+ * matchesSelector v2.0.1
+ * matchesSelector( element, '.selector' )
+ * MIT license
+ */
+
+/*jshint browser: true, strict: true, undef: true, unused: true */
+
+( function( window, factory ) {
+ /*global define: false, module: false */
+ 'use strict';
+ // universal module definition
+ if ( typeof define == 'function' && define.amd ) {
+ // AMD
+ define( 'desandro-matches-selector/matches-selector',factory );
+ } else if ( typeof module == 'object' && module.exports ) {
+ // CommonJS
+ module.exports = factory();
+ } else {
+ // browser global
+ window.matchesSelector = factory();
+ }
+
+}( window, function factory() {
+ 'use strict';
+
+ var matchesMethod = ( function() {
+ var ElemProto = Element.prototype;
+ // check for the standard method name first
+ if ( ElemProto.matches ) {
+ return 'matches';
+ }
+ // check un-prefixed
+ if ( ElemProto.matchesSelector ) {
+ return 'matchesSelector';
+ }
+ // check vendor prefixes
+ var prefixes = [ 'webkit', 'moz', 'ms', 'o' ];
+
+ for ( var i=0; i < prefixes.length; i++ ) {
+ var prefix = prefixes[i];
+ var method = prefix + 'MatchesSelector';
+ if ( ElemProto[ method ] ) {
+ return method;
+ }
+ }
+ })();
+
+ return function matchesSelector( elem, selector ) {
+ return elem[ matchesMethod ]( selector );
+ };
+
+}));
+
+/**
+ * Fizzy UI utils v2.0.1
+ * MIT license
+ */
+
+/*jshint browser: true, undef: true, unused: true, strict: true */
+
+( function( window, factory ) {
+ // universal module definition
+ /*jshint strict: false */ /*globals define, module, require */
+
+ if ( typeof define == 'function' && define.amd ) {
+ // AMD
+ define( 'fizzy-ui-utils/utils',[
+ 'desandro-matches-selector/matches-selector'
+ ], function( matchesSelector ) {
+ return factory( window, matchesSelector );
+ });
+ } else if ( typeof module == 'object' && module.exports ) {
+ // CommonJS
+ module.exports = factory(
+ window,
+ require('desandro-matches-selector')
+ );
+ } else {
+ // browser global
+ window.fizzyUIUtils = factory(
+ window,
+ window.matchesSelector
+ );
+ }
+
+}( window, function factory( window, matchesSelector ) {
+
+
+
+var utils = {};
+
+// ----- extend ----- //
+
+// extends objects
+utils.extend = function( a, b ) {
+ for ( var prop in b ) {
+ a[ prop ] = b[ prop ];
+ }
+ return a;
+};
+
+// ----- modulo ----- //
+
+utils.modulo = function( num, div ) {
+ return ( ( num % div ) + div ) % div;
+};
+
+// ----- makeArray ----- //
+
+// turn element or nodeList into an array
+utils.makeArray = function( obj ) {
+ var ary = [];
+ if ( Array.isArray( obj ) ) {
+ // use object if already an array
+ ary = obj;
+ } else if ( obj && typeof obj.length == 'number' ) {
+ // convert nodeList to array
+ for ( var i=0; i < obj.length; i++ ) {
+ ary.push( obj[i] );
+ }
+ } else {
+ // array of single index
+ ary.push( obj );
+ }
+ return ary;
+};
+
+// ----- removeFrom ----- //
+
+utils.removeFrom = function( ary, obj ) {
+ var index = ary.indexOf( obj );
+ if ( index != -1 ) {
+ ary.splice( index, 1 );
+ }
+};
+
+// ----- getParent ----- //
+
+utils.getParent = function( elem, selector ) {
+ while ( elem != document.body ) {
+ elem = elem.parentNode;
+ if ( matchesSelector( elem, selector ) ) {
+ return elem;
+ }
+ }
+};
+
+// ----- getQueryElement ----- //
+
+// use element as selector string
+utils.getQueryElement = function( elem ) {
+ if ( typeof elem == 'string' ) {
+ return document.querySelector( elem );
+ }
+ return elem;
+};
+
+// ----- handleEvent ----- //
+
+// enable .ontype to trigger from .addEventListener( elem, 'type' )
+utils.handleEvent = function( event ) {
+ var method = 'on' + event.type;
+ if ( this[ method ] ) {
+ this[ method ]( event );
+ }
+};
+
+// ----- filterFindElements ----- //
+
+utils.filterFindElements = function( elems, selector ) {
+ // make array of elems
+ elems = utils.makeArray( elems );
+ var ffElems = [];
+
+ elems.forEach( function( elem ) {
+ // check that elem is an actual element
+ if ( !( elem instanceof HTMLElement ) ) {
+ return;
+ }
+ // add elem if no selector
+ if ( !selector ) {
+ ffElems.push( elem );
+ return;
+ }
+ // filter & find items if we have a selector
+ // filter
+ if ( matchesSelector( elem, selector ) ) {
+ ffElems.push( elem );
+ }
+ // find children
+ var childElems = elem.querySelectorAll( selector );
+ // concat childElems to filterFound array
+ for ( var i=0; i < childElems.length; i++ ) {
+ ffElems.push( childElems[i] );
+ }
+ });
+
+ return ffElems;
+};
+
+// ----- debounceMethod ----- //
+
+utils.debounceMethod = function( _class, methodName, threshold ) {
+ // original method
+ var method = _class.prototype[ methodName ];
+ var timeoutName = methodName + 'Timeout';
+
+ _class.prototype[ methodName ] = function() {
+ var timeout = this[ timeoutName ];
+ if ( timeout ) {
+ clearTimeout( timeout );
+ }
+ var args = arguments;
+
+ var _this = this;
+ this[ timeoutName ] = setTimeout( function() {
+ method.apply( _this, args );
+ delete _this[ timeoutName ];
+ }, threshold || 100 );
+ };
+};
+
+// ----- docReady ----- //
+
+utils.docReady = function( callback ) {
+ if ( document.readyState == 'complete' ) {
+ callback();
+ } else {
+ document.addEventListener( 'DOMContentLoaded', callback );
+ }
+};
+
+// ----- htmlInit ----- //
+
+// http://jamesroberts.name/blog/2010/02/22/string-functions-for-javascript-trim-to-camel-case-to-dashed-and-to-underscore/
+utils.toDashed = function( str ) {
+ return str.replace( /(.)([A-Z])/g, function( match, $1, $2 ) {
+ return $1 + '-' + $2;
+ }).toLowerCase();
+};
+
+var console = window.console;
+/**
+ * allow user to initialize classes via [data-namespace] or .js-namespace class
+ * htmlInit( Widget, 'widgetName' )
+ * options are parsed from data-namespace-options
+ */
+utils.htmlInit = function( WidgetClass, namespace ) {
+ utils.docReady( function() {
+ var dashedNamespace = utils.toDashed( namespace );
+ var dataAttr = 'data-' + dashedNamespace;
+ var dataAttrElems = document.querySelectorAll( '[' + dataAttr + ']' );
+ var jsDashElems = document.querySelectorAll( '.js-' + dashedNamespace );
+ var elems = utils.makeArray( dataAttrElems )
+ .concat( utils.makeArray( jsDashElems ) );
+ var dataOptionsAttr = dataAttr + '-options';
+ var jQuery = window.jQuery;
+
+ elems.forEach( function( elem ) {
+ var attr = elem.getAttribute( dataAttr ) ||
+ elem.getAttribute( dataOptionsAttr );
+ var options;
+ try {
+ options = attr && JSON.parse( attr );
+ } catch ( error ) {
+ // log error, do not initialize
+ if ( console ) {
+ console.error( 'Error parsing ' + dataAttr + ' on ' + elem.className +
+ ': ' + error );
+ }
+ return;
+ }
+ // initialize
+ var instance = new WidgetClass( elem, options );
+ // make available via $().data('layoutname')
+ if ( jQuery ) {
+ jQuery.data( elem, namespace, instance );
+ }
+ });
+
+ });
+};
+
+// ----- ----- //
+
+return utils;
+
+}));
+
+/**
+ * Outlayer Item
+ */
+
+( function( window, factory ) {
+ // universal module definition
+ /* jshint strict: false */ /* globals define, module, require */
+ if ( typeof define == 'function' && define.amd ) {
+ // AMD - RequireJS
+ define( 'outlayer/item',[
+ 'ev-emitter/ev-emitter',
+ 'get-size/get-size'
+ ],
+ factory
+ );
+ } else if ( typeof module == 'object' && module.exports ) {
+ // CommonJS - Browserify, Webpack
+ module.exports = factory(
+ require('ev-emitter'),
+ require('get-size')
+ );
+ } else {
+ // browser global
+ window.Outlayer = {};
+ window.Outlayer.Item = factory(
+ window.EvEmitter,
+ window.getSize
+ );
+ }
+
+}( window, function factory( EvEmitter, getSize ) {
+'use strict';
+
+// ----- helpers ----- //
+
+function isEmptyObj( obj ) {
+ for ( var prop in obj ) {
+ return false;
+ }
+ prop = null;
+ return true;
+}
+
+// -------------------------- CSS3 support -------------------------- //
+
+
+var docElemStyle = document.documentElement.style;
+
+var transitionProperty = typeof docElemStyle.transition == 'string' ?
+ 'transition' : 'WebkitTransition';
+var transformProperty = typeof docElemStyle.transform == 'string' ?
+ 'transform' : 'WebkitTransform';
+
+var transitionEndEvent = {
+ WebkitTransition: 'webkitTransitionEnd',
+ transition: 'transitionend'
+}[ transitionProperty ];
+
+// cache all vendor properties that could have vendor prefix
+var vendorProperties = {
+ transform: transformProperty,
+ transition: transitionProperty,
+ transitionDuration: transitionProperty + 'Duration',
+ transitionProperty: transitionProperty + 'Property'
+};
+
+// -------------------------- Item -------------------------- //
+
+function Item( element, layout ) {
+ if ( !element ) {
+ return;
+ }
+
+ this.element = element;
+ // parent layout class, i.e. Masonry, Isotope, or Packery
+ this.layout = layout;
+ this.position = {
+ x: 0,
+ y: 0
+ };
+
+ this._create();
+}
+
+// inherit EvEmitter
+var proto = Item.prototype = Object.create( EvEmitter.prototype );
+proto.constructor = Item;
+
+proto._create = function() {
+ // transition objects
+ this._transn = {
+ ingProperties: {},
+ clean: {},
+ onEnd: {}
+ };
+
+ this.css({
+ position: 'absolute'
+ });
+};
+
+// trigger specified handler for event type
+proto.handleEvent = function( event ) {
+ var method = 'on' + event.type;
+ if ( this[ method ] ) {
+ this[ method ]( event );
+ }
+};
+
+proto.getSize = function() {
+ this.size = getSize( this.element );
+};
+
+/**
+ * apply CSS styles to element
+ * @param {Object} style
+ */
+proto.css = function( style ) {
+ var elemStyle = this.element.style;
+
+ for ( var prop in style ) {
+ // use vendor property if available
+ var supportedProp = vendorProperties[ prop ] || prop;
+ elemStyle[ supportedProp ] = style[ prop ];
+ }
+};
+
+ // measure position, and sets it
+proto.getPosition = function() {
+ var style = getComputedStyle( this.element );
+ var isOriginLeft = this.layout._getOption('originLeft');
+ var isOriginTop = this.layout._getOption('originTop');
+ var xValue = style[ isOriginLeft ? 'left' : 'right' ];
+ var yValue = style[ isOriginTop ? 'top' : 'bottom' ];
+ // convert percent to pixels
+ var layoutSize = this.layout.size;
+ var x = xValue.indexOf('%') != -1 ?
+ ( parseFloat( xValue ) / 100 ) * layoutSize.width : parseInt( xValue, 10 );
+ var y = yValue.indexOf('%') != -1 ?
+ ( parseFloat( yValue ) / 100 ) * layoutSize.height : parseInt( yValue, 10 );
+
+ // clean up 'auto' or other non-integer values
+ x = isNaN( x ) ? 0 : x;
+ y = isNaN( y ) ? 0 : y;
+ // remove padding from measurement
+ x -= isOriginLeft ? layoutSize.paddingLeft : layoutSize.paddingRight;
+ y -= isOriginTop ? layoutSize.paddingTop : layoutSize.paddingBottom;
+
+ this.position.x = x;
+ this.position.y = y;
+};
+
+// set settled position, apply padding
+proto.layoutPosition = function() {
+ var layoutSize = this.layout.size;
+ var style = {};
+ var isOriginLeft = this.layout._getOption('originLeft');
+ var isOriginTop = this.layout._getOption('originTop');
+
+ // x
+ var xPadding = isOriginLeft ? 'paddingLeft' : 'paddingRight';
+ var xProperty = isOriginLeft ? 'left' : 'right';
+ var xResetProperty = isOriginLeft ? 'right' : 'left';
+
+ var x = this.position.x + layoutSize[ xPadding ];
+ // set in percentage or pixels
+ style[ xProperty ] = this.getXValue( x );
+ // reset other property
+ style[ xResetProperty ] = '';
+
+ // y
+ var yPadding = isOriginTop ? 'paddingTop' : 'paddingBottom';
+ var yProperty = isOriginTop ? 'top' : 'bottom';
+ var yResetProperty = isOriginTop ? 'bottom' : 'top';
+
+ var y = this.position.y + layoutSize[ yPadding ];
+ // set in percentage or pixels
+ style[ yProperty ] = this.getYValue( y );
+ // reset other property
+ style[ yResetProperty ] = '';
+
+ this.css( style );
+ this.emitEvent( 'layout', [ this ] );
+};
+
+proto.getXValue = function( x ) {
+ var isHorizontal = this.layout._getOption('horizontal');
+ return this.layout.options.percentPosition && !isHorizontal ?
+ ( ( x / this.layout.size.width ) * 100 ) + '%' : x + 'px';
+};
+
+proto.getYValue = function( y ) {
+ var isHorizontal = this.layout._getOption('horizontal');
+ return this.layout.options.percentPosition && isHorizontal ?
+ ( ( y / this.layout.size.height ) * 100 ) + '%' : y + 'px';
+};
+
+proto._transitionTo = function( x, y ) {
+ this.getPosition();
+ // get current x & y from top/left
+ var curX = this.position.x;
+ var curY = this.position.y;
+
+ var compareX = parseInt( x, 10 );
+ var compareY = parseInt( y, 10 );
+ var didNotMove = compareX === this.position.x && compareY === this.position.y;
+
+ // save end position
+ this.setPosition( x, y );
+
+ // if did not move and not transitioning, just go to layout
+ if ( didNotMove && !this.isTransitioning ) {
+ this.layoutPosition();
+ return;
+ }
+
+ var transX = x - curX;
+ var transY = y - curY;
+ var transitionStyle = {};
+ transitionStyle.transform = this.getTranslate( transX, transY );
+
+ this.transition({
+ to: transitionStyle,
+ onTransitionEnd: {
+ transform: this.layoutPosition
+ },
+ isCleaning: true
+ });
+};
+
+proto.getTranslate = function( x, y ) {
+ // flip cooridinates if origin on right or bottom
+ var isOriginLeft = this.layout._getOption('originLeft');
+ var isOriginTop = this.layout._getOption('originTop');
+ x = isOriginLeft ? x : -x;
+ y = isOriginTop ? y : -y;
+ return 'translate3d(' + x + 'px, ' + y + 'px, 0)';
+};
+
+// non transition + transform support
+proto.goTo = function( x, y ) {
+ this.setPosition( x, y );
+ this.layoutPosition();
+};
+
+proto.moveTo = proto._transitionTo;
+
+proto.setPosition = function( x, y ) {
+ this.position.x = parseInt( x, 10 );
+ this.position.y = parseInt( y, 10 );
+};
+
+// ----- transition ----- //
+
+/**
+ * @param {Object} style - CSS
+ * @param {Function} onTransitionEnd
+ */
+
+// non transition, just trigger callback
+proto._nonTransition = function( args ) {
+ this.css( args.to );
+ if ( args.isCleaning ) {
+ this._removeStyles( args.to );
+ }
+ for ( var prop in args.onTransitionEnd ) {
+ args.onTransitionEnd[ prop ].call( this );
+ }
+};
+
+/**
+ * proper transition
+ * @param {Object} args - arguments
+ * @param {Object} to - style to transition to
+ * @param {Object} from - style to start transition from
+ * @param {Boolean} isCleaning - removes transition styles after transition
+ * @param {Function} onTransitionEnd - callback
+ */
+proto.transition = function( args ) {
+ // redirect to nonTransition if no transition duration
+ if ( !parseFloat( this.layout.options.transitionDuration ) ) {
+ this._nonTransition( args );
+ return;
+ }
+
+ var _transition = this._transn;
+ // keep track of onTransitionEnd callback by css property
+ for ( var prop in args.onTransitionEnd ) {
+ _transition.onEnd[ prop ] = args.onTransitionEnd[ prop ];
+ }
+ // keep track of properties that are transitioning
+ for ( prop in args.to ) {
+ _transition.ingProperties[ prop ] = true;
+ // keep track of properties to clean up when transition is done
+ if ( args.isCleaning ) {
+ _transition.clean[ prop ] = true;
+ }
+ }
+
+ // set from styles
+ if ( args.from ) {
+ this.css( args.from );
+ // force redraw. http://blog.alexmaccaw.com/css-transitions
+ var h = this.element.offsetHeight;
+ // hack for JSHint to hush about unused var
+ h = null;
+ }
+ // enable transition
+ this.enableTransition( args.to );
+ // set styles that are transitioning
+ this.css( args.to );
+
+ this.isTransitioning = true;
+
+};
+
+// dash before all cap letters, including first for
+// WebkitTransform => -webkit-transform
+function toDashedAll( str ) {
+ return str.replace( /([A-Z])/g, function( $1 ) {
+ return '-' + $1.toLowerCase();
+ });
+}
+
+var transitionProps = 'opacity,' + toDashedAll( transformProperty );
+
+proto.enableTransition = function(/* style */) {
+ // HACK changing transitionProperty during a transition
+ // will cause transition to jump
+ if ( this.isTransitioning ) {
+ return;
+ }
+
+ // make `transition: foo, bar, baz` from style object
+ // HACK un-comment this when enableTransition can work
+ // while a transition is happening
+ // var transitionValues = [];
+ // for ( var prop in style ) {
+ // // dash-ify camelCased properties like WebkitTransition
+ // prop = vendorProperties[ prop ] || prop;
+ // transitionValues.push( toDashedAll( prop ) );
+ // }
+ // enable transition styles
+ this.css({
+ transitionProperty: transitionProps,
+ transitionDuration: this.layout.options.transitionDuration
+ });
+ // listen for transition end event
+ this.element.addEventListener( transitionEndEvent, this, false );
+};
+
+// ----- events ----- //
+
+proto.onwebkitTransitionEnd = function( event ) {
+ this.ontransitionend( event );
+};
+
+proto.onotransitionend = function( event ) {
+ this.ontransitionend( event );
+};
+
+// properties that I munge to make my life easier
+var dashedVendorProperties = {
+ '-webkit-transform': 'transform'
+};
+
+proto.ontransitionend = function( event ) {
+ // disregard bubbled events from children
+ if ( event.target !== this.element ) {
+ return;
+ }
+ var _transition = this._transn;
+ // get property name of transitioned property, convert to prefix-free
+ var propertyName = dashedVendorProperties[ event.propertyName ] || event.propertyName;
+
+ // remove property that has completed transitioning
+ delete _transition.ingProperties[ propertyName ];
+ // check if any properties are still transitioning
+ if ( isEmptyObj( _transition.ingProperties ) ) {
+ // all properties have completed transitioning
+ this.disableTransition();
+ }
+ // clean style
+ if ( propertyName in _transition.clean ) {
+ // clean up style
+ this.element.style[ event.propertyName ] = '';
+ delete _transition.clean[ propertyName ];
+ }
+ // trigger onTransitionEnd callback
+ if ( propertyName in _transition.onEnd ) {
+ var onTransitionEnd = _transition.onEnd[ propertyName ];
+ onTransitionEnd.call( this );
+ delete _transition.onEnd[ propertyName ];
+ }
+
+ this.emitEvent( 'transitionEnd', [ this ] );
+};
+
+proto.disableTransition = function() {
+ this.removeTransitionStyles();
+ this.element.removeEventListener( transitionEndEvent, this, false );
+ this.isTransitioning = false;
+};
+
+/**
+ * removes style property from element
+ * @param {Object} style
+**/
+proto._removeStyles = function( style ) {
+ // clean up transition styles
+ var cleanStyle = {};
+ for ( var prop in style ) {
+ cleanStyle[ prop ] = '';
+ }
+ this.css( cleanStyle );
+};
+
+var cleanTransitionStyle = {
+ transitionProperty: '',
+ transitionDuration: ''
+};
+
+proto.removeTransitionStyles = function() {
+ // remove transition
+ this.css( cleanTransitionStyle );
+};
+
+// ----- show/hide/remove ----- //
+
+// remove element from DOM
+proto.removeElem = function() {
+ this.element.parentNode.removeChild( this.element );
+ // remove display: none
+ this.css({ display: '' });
+ this.emitEvent( 'remove', [ this ] );
+};
+
+proto.remove = function() {
+ // just remove element if no transition support or no transition
+ if ( !transitionProperty || !parseFloat( this.layout.options.transitionDuration ) ) {
+ this.removeElem();
+ return;
+ }
+
+ // start transition
+ this.once( 'transitionEnd', function() {
+ this.removeElem();
+ });
+ this.hide();
+};
+
+proto.reveal = function() {
+ delete this.isHidden;
+ // remove display: none
+ this.css({ display: '' });
+
+ var options = this.layout.options;
+
+ var onTransitionEnd = {};
+ var transitionEndProperty = this.getHideRevealTransitionEndProperty('visibleStyle');
+ onTransitionEnd[ transitionEndProperty ] = this.onRevealTransitionEnd;
+
+ this.transition({
+ from: options.hiddenStyle,
+ to: options.visibleStyle,
+ isCleaning: true,
+ onTransitionEnd: onTransitionEnd
+ });
+};
+
+proto.onRevealTransitionEnd = function() {
+ // check if still visible
+ // during transition, item may have been hidden
+ if ( !this.isHidden ) {
+ this.emitEvent('reveal');
+ }
+};
+
+/**
+ * get style property use for hide/reveal transition end
+ * @param {String} styleProperty - hiddenStyle/visibleStyle
+ * @returns {String}
+ */
+proto.getHideRevealTransitionEndProperty = function( styleProperty ) {
+ var optionStyle = this.layout.options[ styleProperty ];
+ // use opacity
+ if ( optionStyle.opacity ) {
+ return 'opacity';
+ }
+ // get first property
+ for ( var prop in optionStyle ) {
+ return prop;
+ }
+};
+
+proto.hide = function() {
+ // set flag
+ this.isHidden = true;
+ // remove display: none
+ this.css({ display: '' });
+
+ var options = this.layout.options;
+
+ var onTransitionEnd = {};
+ var transitionEndProperty = this.getHideRevealTransitionEndProperty('hiddenStyle');
+ onTransitionEnd[ transitionEndProperty ] = this.onHideTransitionEnd;
+
+ this.transition({
+ from: options.visibleStyle,
+ to: options.hiddenStyle,
+ // keep hidden stuff hidden
+ isCleaning: true,
+ onTransitionEnd: onTransitionEnd
+ });
+};
+
+proto.onHideTransitionEnd = function() {
+ // check if still hidden
+ // during transition, item may have been un-hidden
+ if ( this.isHidden ) {
+ this.css({ display: 'none' });
+ this.emitEvent('hide');
+ }
+};
+
+proto.destroy = function() {
+ this.css({
+ position: '',
+ left: '',
+ right: '',
+ top: '',
+ bottom: '',
+ transition: '',
+ transform: ''
+ });
+};
+
+return Item;
+
+}));
+
+/*!
+ * Outlayer v2.0.1
+ * the brains and guts of a layout library
+ * MIT license
+ */
+
+( function( window, factory ) {
+ 'use strict';
+ // universal module definition
+ /* jshint strict: false */ /* globals define, module, require */
+ if ( typeof define == 'function' && define.amd ) {
+ // AMD - RequireJS
+ define( 'outlayer/outlayer',[
+ 'ev-emitter/ev-emitter',
+ 'get-size/get-size',
+ 'fizzy-ui-utils/utils',
+ './item'
+ ],
+ function( EvEmitter, getSize, utils, Item ) {
+ return factory( window, EvEmitter, getSize, utils, Item);
+ }
+ );
+ } else if ( typeof module == 'object' && module.exports ) {
+ // CommonJS - Browserify, Webpack
+ module.exports = factory(
+ window,
+ require('ev-emitter'),
+ require('get-size'),
+ require('fizzy-ui-utils'),
+ require('./item')
+ );
+ } else {
+ // browser global
+ window.Outlayer = factory(
+ window,
+ window.EvEmitter,
+ window.getSize,
+ window.fizzyUIUtils,
+ window.Outlayer.Item
+ );
+ }
+
+}( window, function factory( window, EvEmitter, getSize, utils, Item ) {
+'use strict';
+
+// ----- vars ----- //
+
+var console = window.console;
+var jQuery = window.jQuery;
+var noop = function() {};
+
+// -------------------------- Outlayer -------------------------- //
+
+// globally unique identifiers
+var GUID = 0;
+// internal store of all Outlayer intances
+var instances = {};
+
+
+/**
+ * @param {Element, String} element
+ * @param {Object} options
+ * @constructor
+ */
+function Outlayer( element, options ) {
+ var queryElement = utils.getQueryElement( element );
+ if ( !queryElement ) {
+ if ( console ) {
+ console.error( 'Bad element for ' + this.constructor.namespace +
+ ': ' + ( queryElement || element ) );
+ }
+ return;
+ }
+ this.element = queryElement;
+ // add jQuery
+ if ( jQuery ) {
+ this.$element = jQuery( this.element );
+ }
+
+ // options
+ this.options = utils.extend( {}, this.constructor.defaults );
+ this.option( options );
+
+ // add id for Outlayer.getFromElement
+ var id = ++GUID;
+ this.element.outlayerGUID = id; // expando
+ instances[ id ] = this; // associate via id
+
+ // kick it off
+ this._create();
+
+ var isInitLayout = this._getOption('initLayout');
+ if ( isInitLayout ) {
+ this.layout();
+ }
+}
+
+// settings are for internal use only
+Outlayer.namespace = 'outlayer';
+Outlayer.Item = Item;
+
+// default options
+Outlayer.defaults = {
+ containerStyle: {
+ position: 'relative'
+ },
+ initLayout: true,
+ originLeft: true,
+ originTop: true,
+ resize: true,
+ resizeContainer: true,
+ // item options
+ transitionDuration: '0.4s',
+ hiddenStyle: {
+ opacity: 0,
+ transform: 'scale(0.001)'
+ },
+ visibleStyle: {
+ opacity: 1,
+ transform: 'scale(1)'
+ }
+};
+
+var proto = Outlayer.prototype;
+// inherit EvEmitter
+utils.extend( proto, EvEmitter.prototype );
+
+/**
+ * set options
+ * @param {Object} opts
+ */
+proto.option = function( opts ) {
+ utils.extend( this.options, opts );
+};
+
+/**
+ * get backwards compatible option value, check old name
+ */
+proto._getOption = function( option ) {
+ var oldOption = this.constructor.compatOptions[ option ];
+ return oldOption && this.options[ oldOption ] !== undefined ?
+ this.options[ oldOption ] : this.options[ option ];
+};
+
+Outlayer.compatOptions = {
+ // currentName: oldName
+ initLayout: 'isInitLayout',
+ horizontal: 'isHorizontal',
+ layoutInstant: 'isLayoutInstant',
+ originLeft: 'isOriginLeft',
+ originTop: 'isOriginTop',
+ resize: 'isResizeBound',
+ resizeContainer: 'isResizingContainer'
+};
+
+proto._create = function() {
+ // get items from children
+ this.reloadItems();
+ // elements that affect layout, but are not laid out
+ this.stamps = [];
+ this.stamp( this.options.stamp );
+ // set container style
+ utils.extend( this.element.style, this.options.containerStyle );
+
+ // bind resize method
+ var canBindResize = this._getOption('resize');
+ if ( canBindResize ) {
+ this.bindResize();
+ }
+};
+
+// goes through all children again and gets bricks in proper order
+proto.reloadItems = function() {
+ // collection of item elements
+ this.items = this._itemize( this.element.children );
+};
+
+
+/**
+ * turn elements into Outlayer.Items to be used in layout
+ * @param {Array or NodeList or HTMLElement} elems
+ * @returns {Array} items - collection of new Outlayer Items
+ */
+proto._itemize = function( elems ) {
+
+ var itemElems = this._filterFindItemElements( elems );
+ var Item = this.constructor.Item;
+
+ // create new Outlayer Items for collection
+ var items = [];
+ for ( var i=0; i < itemElems.length; i++ ) {
+ var elem = itemElems[i];
+ var item = new Item( elem, this );
+ items.push( item );
+ }
+
+ return items;
+};
+
+/**
+ * get item elements to be used in layout
+ * @param {Array or NodeList or HTMLElement} elems
+ * @returns {Array} items - item elements
+ */
+proto._filterFindItemElements = function( elems ) {
+ return utils.filterFindElements( elems, this.options.itemSelector );
+};
+
+/**
+ * getter method for getting item elements
+ * @returns {Array} elems - collection of item elements
+ */
+proto.getItemElements = function() {
+ return this.items.map( function( item ) {
+ return item.element;
+ });
+};
+
+// ----- init & layout ----- //
+
+/**
+ * lays out all items
+ */
+proto.layout = function() {
+ this._resetLayout();
+ this._manageStamps();
+
+ // don't animate first layout
+ var layoutInstant = this._getOption('layoutInstant');
+ var isInstant = layoutInstant !== undefined ?
+ layoutInstant : !this._isLayoutInited;
+ this.layoutItems( this.items, isInstant );
+
+ // flag for initalized
+ this._isLayoutInited = true;
+};
+
+// _init is alias for layout
+proto._init = proto.layout;
+
+/**
+ * logic before any new layout
+ */
+proto._resetLayout = function() {
+ this.getSize();
+};
+
+
+proto.getSize = function() {
+ this.size = getSize( this.element );
+};
+
+/**
+ * get measurement from option, for columnWidth, rowHeight, gutter
+ * if option is String -> get element from selector string, & get size of element
+ * if option is Element -> get size of element
+ * else use option as a number
+ *
+ * @param {String} measurement
+ * @param {String} size - width or height
+ * @private
+ */
+proto._getMeasurement = function( measurement, size ) {
+ var option = this.options[ measurement ];
+ var elem;
+ if ( !option ) {
+ // default to 0
+ this[ measurement ] = 0;
+ } else {
+ // use option as an element
+ if ( typeof option == 'string' ) {
+ elem = this.element.querySelector( option );
+ } else if ( option instanceof HTMLElement ) {
+ elem = option;
+ }
+ // use size of element, if element
+ this[ measurement ] = elem ? getSize( elem )[ size ] : option;
+ }
+};
+
+/**
+ * layout a collection of item elements
+ * @api public
+ */
+proto.layoutItems = function( items, isInstant ) {
+ items = this._getItemsForLayout( items );
+
+ this._layoutItems( items, isInstant );
+
+ this._postLayout();
+};
+
+/**
+ * get the items to be laid out
+ * you may want to skip over some items
+ * @param {Array} items
+ * @returns {Array} items
+ */
+proto._getItemsForLayout = function( items ) {
+ return items.filter( function( item ) {
+ return !item.isIgnored;
+ });
+};
+
+/**
+ * layout items
+ * @param {Array} items
+ * @param {Boolean} isInstant
+ */
+proto._layoutItems = function( items, isInstant ) {
+ this._emitCompleteOnItems( 'layout', items );
+
+ if ( !items || !items.length ) {
+ // no items, emit event with empty array
+ return;
+ }
+
+ var queue = [];
+
+ items.forEach( function( item ) {
+ // get x/y object from method
+ var position = this._getItemLayoutPosition( item );
+ // enqueue
+ position.item = item;
+ position.isInstant = isInstant || item.isLayoutInstant;
+ queue.push( position );
+ }, this );
+
+ this._processLayoutQueue( queue );
+};
+
+/**
+ * get item layout position
+ * @param {Outlayer.Item} item
+ * @returns {Object} x and y position
+ */
+proto._getItemLayoutPosition = function( /* item */ ) {
+ return {
+ x: 0,
+ y: 0
+ };
+};
+
+/**
+ * iterate over array and position each item
+ * Reason being - separating this logic prevents 'layout invalidation'
+ * thx @paul_irish
+ * @param {Array} queue
+ */
+proto._processLayoutQueue = function( queue ) {
+ queue.forEach( function( obj ) {
+ this._positionItem( obj.item, obj.x, obj.y, obj.isInstant );
+ }, this );
+};
+
+/**
+ * Sets position of item in DOM
+ * @param {Outlayer.Item} item
+ * @param {Number} x - horizontal position
+ * @param {Number} y - vertical position
+ * @param {Boolean} isInstant - disables transitions
+ */
+proto._positionItem = function( item, x, y, isInstant ) {
+ if ( isInstant ) {
+ // if not transition, just set CSS
+ item.goTo( x, y );
+ } else {
+ item.moveTo( x, y );
+ }
+};
+
+/**
+ * Any logic you want to do after each layout,
+ * i.e. size the container
+ */
+proto._postLayout = function() {
+ this.resizeContainer();
+};
+
+proto.resizeContainer = function() {
+ var isResizingContainer = this._getOption('resizeContainer');
+ if ( !isResizingContainer ) {
+ return;
+ }
+ var size = this._getContainerSize();
+ if ( size ) {
+ this._setContainerMeasure( size.width, true );
+ this._setContainerMeasure( size.height, false );
+ }
+};
+
+/**
+ * Sets width or height of container if returned
+ * @returns {Object} size
+ * @param {Number} width
+ * @param {Number} height
+ */
+proto._getContainerSize = noop;
+
+/**
+ * @param {Number} measure - size of width or height
+ * @param {Boolean} isWidth
+ */
+proto._setContainerMeasure = function( measure, isWidth ) {
+ if ( measure === undefined ) {
+ return;
+ }
+
+ var elemSize = this.size;
+ // add padding and border width if border box
+ if ( elemSize.isBorderBox ) {
+ measure += isWidth ? elemSize.paddingLeft + elemSize.paddingRight +
+ elemSize.borderLeftWidth + elemSize.borderRightWidth :
+ elemSize.paddingBottom + elemSize.paddingTop +
+ elemSize.borderTopWidth + elemSize.borderBottomWidth;
+ }
+
+ measure = Math.max( measure, 0 );
+ this.element.style[ isWidth ? 'width' : 'height' ] = measure + 'px';
+};
+
+/**
+ * emit eventComplete on a collection of items events
+ * @param {String} eventName
+ * @param {Array} items - Outlayer.Items
+ */
+proto._emitCompleteOnItems = function( eventName, items ) {
+ var _this = this;
+ function onComplete() {
+ _this.dispatchEvent( eventName + 'Complete', null, [ items ] );
+ }
+
+ var count = items.length;
+ if ( !items || !count ) {
+ onComplete();
+ return;
+ }
+
+ var doneCount = 0;
+ function tick() {
+ doneCount++;
+ if ( doneCount == count ) {
+ onComplete();
+ }
+ }
+
+ // bind callback
+ items.forEach( function( item ) {
+ item.once( eventName, tick );
+ });
+};
+
+/**
+ * emits events via EvEmitter and jQuery events
+ * @param {String} type - name of event
+ * @param {Event} event - original event
+ * @param {Array} args - extra arguments
+ */
+proto.dispatchEvent = function( type, event, args ) {
+ // add original event to arguments
+ var emitArgs = event ? [ event ].concat( args ) : args;
+ this.emitEvent( type, emitArgs );
+
+ if ( jQuery ) {
+ // set this.$element
+ this.$element = this.$element || jQuery( this.element );
+ if ( event ) {
+ // create jQuery event
+ var $event = jQuery.Event( event );
+ $event.type = type;
+ this.$element.trigger( $event, args );
+ } else {
+ // just trigger with type if no event available
+ this.$element.trigger( type, args );
+ }
+ }
+};
+
+// -------------------------- ignore & stamps -------------------------- //
+
+
+/**
+ * keep item in collection, but do not lay it out
+ * ignored items do not get skipped in layout
+ * @param {Element} elem
+ */
+proto.ignore = function( elem ) {
+ var item = this.getItem( elem );
+ if ( item ) {
+ item.isIgnored = true;
+ }
+};
+
+/**
+ * return item to layout collection
+ * @param {Element} elem
+ */
+proto.unignore = function( elem ) {
+ var item = this.getItem( elem );
+ if ( item ) {
+ delete item.isIgnored;
+ }
+};
+
+/**
+ * adds elements to stamps
+ * @param {NodeList, Array, Element, or String} elems
+ */
+proto.stamp = function( elems ) {
+ elems = this._find( elems );
+ if ( !elems ) {
+ return;
+ }
+
+ this.stamps = this.stamps.concat( elems );
+ // ignore
+ elems.forEach( this.ignore, this );
+};
+
+/**
+ * removes elements to stamps
+ * @param {NodeList, Array, or Element} elems
+ */
+proto.unstamp = function( elems ) {
+ elems = this._find( elems );
+ if ( !elems ){
+ return;
+ }
+
+ elems.forEach( function( elem ) {
+ // filter out removed stamp elements
+ utils.removeFrom( this.stamps, elem );
+ this.unignore( elem );
+ }, this );
+};
+
+/**
+ * finds child elements
+ * @param {NodeList, Array, Element, or String} elems
+ * @returns {Array} elems
+ */
+proto._find = function( elems ) {
+ if ( !elems ) {
+ return;
+ }
+ // if string, use argument as selector string
+ if ( typeof elems == 'string' ) {
+ elems = this.element.querySelectorAll( elems );
+ }
+ elems = utils.makeArray( elems );
+ return elems;
+};
+
+proto._manageStamps = function() {
+ if ( !this.stamps || !this.stamps.length ) {
+ return;
+ }
+
+ this._getBoundingRect();
+
+ this.stamps.forEach( this._manageStamp, this );
+};
+
+// update boundingLeft / Top
+proto._getBoundingRect = function() {
+ // get bounding rect for container element
+ var boundingRect = this.element.getBoundingClientRect();
+ var size = this.size;
+ this._boundingRect = {
+ left: boundingRect.left + size.paddingLeft + size.borderLeftWidth,
+ top: boundingRect.top + size.paddingTop + size.borderTopWidth,
+ right: boundingRect.right - ( size.paddingRight + size.borderRightWidth ),
+ bottom: boundingRect.bottom - ( size.paddingBottom + size.borderBottomWidth )
+ };
+};
+
+/**
+ * @param {Element} stamp
+**/
+proto._manageStamp = noop;
+
+/**
+ * get x/y position of element relative to container element
+ * @param {Element} elem
+ * @returns {Object} offset - has left, top, right, bottom
+ */
+proto._getElementOffset = function( elem ) {
+ var boundingRect = elem.getBoundingClientRect();
+ var thisRect = this._boundingRect;
+ var size = getSize( elem );
+ var offset = {
+ left: boundingRect.left - thisRect.left - size.marginLeft,
+ top: boundingRect.top - thisRect.top - size.marginTop,
+ right: thisRect.right - boundingRect.right - size.marginRight,
+ bottom: thisRect.bottom - boundingRect.bottom - size.marginBottom
+ };
+ return offset;
+};
+
+// -------------------------- resize -------------------------- //
+
+// enable event handlers for listeners
+// i.e. resize -> onresize
+proto.handleEvent = utils.handleEvent;
+
+/**
+ * Bind layout to window resizing
+ */
+proto.bindResize = function() {
+ window.addEventListener( 'resize', this );
+ this.isResizeBound = true;
+};
+
+/**
+ * Unbind layout to window resizing
+ */
+proto.unbindResize = function() {
+ window.removeEventListener( 'resize', this );
+ this.isResizeBound = false;
+};
+
+proto.onresize = function() {
+ this.resize();
+};
+
+utils.debounceMethod( Outlayer, 'onresize', 100 );
+
+proto.resize = function() {
+ // don't trigger if size did not change
+ // or if resize was unbound. See #9
+ if ( !this.isResizeBound || !this.needsResizeLayout() ) {
+ return;
+ }
+
+ this.layout();
+};
+
+/**
+ * check if layout is needed post layout
+ * @returns Boolean
+ */
+proto.needsResizeLayout = function() {
+ var size = getSize( this.element );
+ // check that this.size and size are there
+ // IE8 triggers resize on body size change, so they might not be
+ var hasSizes = this.size && size;
+ return hasSizes && size.innerWidth !== this.size.innerWidth;
+};
+
+// -------------------------- methods -------------------------- //
+
+/**
+ * add items to Outlayer instance
+ * @param {Array or NodeList or Element} elems
+ * @returns {Array} items - Outlayer.Items
+**/
+proto.addItems = function( elems ) {
+ var items = this._itemize( elems );
+ // add items to collection
+ if ( items.length ) {
+ this.items = this.items.concat( items );
+ }
+ return items;
+};
+
+/**
+ * Layout newly-appended item elements
+ * @param {Array or NodeList or Element} elems
+ */
+proto.appended = function( elems ) {
+ var items = this.addItems( elems );
+ if ( !items.length ) {
+ return;
+ }
+ // layout and reveal just the new items
+ this.layoutItems( items, true );
+ this.reveal( items );
+};
+
+/**
+ * Layout prepended elements
+ * @param {Array or NodeList or Element} elems
+ */
+proto.prepended = function( elems ) {
+ var items = this._itemize( elems );
+ if ( !items.length ) {
+ return;
+ }
+ // add items to beginning of collection
+ var previousItems = this.items.slice(0);
+ this.items = items.concat( previousItems );
+ // start new layout
+ this._resetLayout();
+ this._manageStamps();
+ // layout new stuff without transition
+ this.layoutItems( items, true );
+ this.reveal( items );
+ // layout previous items
+ this.layoutItems( previousItems );
+};
+
+/**
+ * reveal a collection of items
+ * @param {Array of Outlayer.Items} items
+ */
+proto.reveal = function( items ) {
+ this._emitCompleteOnItems( 'reveal', items );
+ if ( !items || !items.length ) {
+ return;
+ }
+ items.forEach( function( item ) {
+ item.reveal();
+ });
+};
+
+/**
+ * hide a collection of items
+ * @param {Array of Outlayer.Items} items
+ */
+proto.hide = function( items ) {
+ this._emitCompleteOnItems( 'hide', items );
+ if ( !items || !items.length ) {
+ return;
+ }
+ items.forEach( function( item ) {
+ item.hide();
+ });
+};
+
+/**
+ * reveal item elements
+ * @param {Array}, {Element}, {NodeList} items
+ */
+proto.revealItemElements = function( elems ) {
+ var items = this.getItems( elems );
+ this.reveal( items );
+};
+
+/**
+ * hide item elements
+ * @param {Array}, {Element}, {NodeList} items
+ */
+proto.hideItemElements = function( elems ) {
+ var items = this.getItems( elems );
+ this.hide( items );
+};
+
+/**
+ * get Outlayer.Item, given an Element
+ * @param {Element} elem
+ * @param {Function} callback
+ * @returns {Outlayer.Item} item
+ */
+proto.getItem = function( elem ) {
+ // loop through items to get the one that matches
+ for ( var i=0; i < this.items.length; i++ ) {
+ var item = this.items[i];
+ if ( item.element == elem ) {
+ // return item
+ return item;
+ }
+ }
+};
+
+/**
+ * get collection of Outlayer.Items, given Elements
+ * @param {Array} elems
+ * @returns {Array} items - Outlayer.Items
+ */
+proto.getItems = function( elems ) {
+ elems = utils.makeArray( elems );
+ var items = [];
+ elems.forEach( function( elem ) {
+ var item = this.getItem( elem );
+ if ( item ) {
+ items.push( item );
+ }
+ }, this );
+
+ return items;
+};
+
+/**
+ * remove element(s) from instance and DOM
+ * @param {Array or NodeList or Element} elems
+ */
+proto.remove = function( elems ) {
+ var removeItems = this.getItems( elems );
+
+ this._emitCompleteOnItems( 'remove', removeItems );
+
+ // bail if no items to remove
+ if ( !removeItems || !removeItems.length ) {
+ return;
+ }
+
+ removeItems.forEach( function( item ) {
+ item.remove();
+ // remove item from collection
+ utils.removeFrom( this.items, item );
+ }, this );
+};
+
+// ----- destroy ----- //
+
+// remove and disable Outlayer instance
+proto.destroy = function() {
+ // clean up dynamic styles
+ var style = this.element.style;
+ style.height = '';
+ style.position = '';
+ style.width = '';
+ // destroy items
+ this.items.forEach( function( item ) {
+ item.destroy();
+ });
+
+ this.unbindResize();
+
+ var id = this.element.outlayerGUID;
+ delete instances[ id ]; // remove reference to instance by id
+ delete this.element.outlayerGUID;
+ // remove data for jQuery
+ if ( jQuery ) {
+ jQuery.removeData( this.element, this.constructor.namespace );
+ }
+
+};
+
+// -------------------------- data -------------------------- //
+
+/**
+ * get Outlayer instance from element
+ * @param {Element} elem
+ * @returns {Outlayer}
+ */
+Outlayer.data = function( elem ) {
+ elem = utils.getQueryElement( elem );
+ var id = elem && elem.outlayerGUID;
+ return id && instances[ id ];
+};
+
+
+// -------------------------- create Outlayer class -------------------------- //
+
+/**
+ * create a layout class
+ * @param {String} namespace
+ */
+Outlayer.create = function( namespace, options ) {
+ // sub-class Outlayer
+ var Layout = subclass( Outlayer );
+ // apply new options and compatOptions
+ Layout.defaults = utils.extend( {}, Outlayer.defaults );
+ utils.extend( Layout.defaults, options );
+ Layout.compatOptions = utils.extend( {}, Outlayer.compatOptions );
+
+ Layout.namespace = namespace;
+
+ Layout.data = Outlayer.data;
+
+ // sub-class Item
+ Layout.Item = subclass( Item );
+
+ // -------------------------- declarative -------------------------- //
+
+ utils.htmlInit( Layout, namespace );
+
+ // -------------------------- jQuery bridge -------------------------- //
+
+ // make into jQuery plugin
+ if ( jQuery && jQuery.bridget ) {
+ jQuery.bridget( namespace, Layout );
+ }
+
+ return Layout;
+};
+
+function subclass( Parent ) {
+ function SubClass() {
+ Parent.apply( this, arguments );
+ }
+
+ SubClass.prototype = Object.create( Parent.prototype );
+ SubClass.prototype.constructor = SubClass;
+
+ return SubClass;
+}
+
+// ----- fin ----- //
+
+// back in global
+Outlayer.Item = Item;
+
+return Outlayer;
+
+}));
+
+/**
+ * Rect
+ * low-level utility class for basic geometry
+ */
+
+( function( window, factory ) {
+ // universal module definition
+ /* jshint strict: false */ /* globals define, module */
+ if ( typeof define == 'function' && define.amd ) {
+ // AMD
+ define( 'packery/rect',factory );
+ } else if ( typeof module == 'object' && module.exports ) {
+ // CommonJS
+ module.exports = factory();
+ } else {
+ // browser global
+ window.Packery = window.Packery || {};
+ window.Packery.Rect = factory();
+ }
+
+}( window, function factory() {
+'use strict';
+
+// -------------------------- Rect -------------------------- //
+
+function Rect( props ) {
+ // extend properties from defaults
+ for ( var prop in Rect.defaults ) {
+ this[ prop ] = Rect.defaults[ prop ];
+ }
+
+ for ( prop in props ) {
+ this[ prop ] = props[ prop ];
+ }
+
+}
+
+Rect.defaults = {
+ x: 0,
+ y: 0,
+ width: 0,
+ height: 0
+};
+
+var proto = Rect.prototype;
+
+/**
+ * Determines whether or not this rectangle wholly encloses another rectangle or point.
+ * @param {Rect} rect
+ * @returns {Boolean}
+**/
+proto.contains = function( rect ) {
+ // points don't have width or height
+ var otherWidth = rect.width || 0;
+ var otherHeight = rect.height || 0;
+ return this.x <= rect.x &&
+ this.y <= rect.y &&
+ this.x + this.width >= rect.x + otherWidth &&
+ this.y + this.height >= rect.y + otherHeight;
+};
+
+/**
+ * Determines whether or not the rectangle intersects with another.
+ * @param {Rect} rect
+ * @returns {Boolean}
+**/
+proto.overlaps = function( rect ) {
+ var thisRight = this.x + this.width;
+ var thisBottom = this.y + this.height;
+ var rectRight = rect.x + rect.width;
+ var rectBottom = rect.y + rect.height;
+
+ // http://stackoverflow.com/a/306332
+ return this.x < rectRight &&
+ thisRight > rect.x &&
+ this.y < rectBottom &&
+ thisBottom > rect.y;
+};
+
+/**
+ * @param {Rect} rect - the overlapping rect
+ * @returns {Array} freeRects - rects representing the area around the rect
+**/
+proto.getMaximalFreeRects = function( rect ) {
+
+ // if no intersection, return false
+ if ( !this.overlaps( rect ) ) {
+ return false;
+ }
+
+ var freeRects = [];
+ var freeRect;
+
+ var thisRight = this.x + this.width;
+ var thisBottom = this.y + this.height;
+ var rectRight = rect.x + rect.width;
+ var rectBottom = rect.y + rect.height;
+
+ // top
+ if ( this.y < rect.y ) {
+ freeRect = new Rect({
+ x: this.x,
+ y: this.y,
+ width: this.width,
+ height: rect.y - this.y
+ });
+ freeRects.push( freeRect );
+ }
+
+ // right
+ if ( thisRight > rectRight ) {
+ freeRect = new Rect({
+ x: rectRight,
+ y: this.y,
+ width: thisRight - rectRight,
+ height: this.height
+ });
+ freeRects.push( freeRect );
+ }
+
+ // bottom
+ if ( thisBottom > rectBottom ) {
+ freeRect = new Rect({
+ x: this.x,
+ y: rectBottom,
+ width: this.width,
+ height: thisBottom - rectBottom
+ });
+ freeRects.push( freeRect );
+ }
+
+ // left
+ if ( this.x < rect.x ) {
+ freeRect = new Rect({
+ x: this.x,
+ y: this.y,
+ width: rect.x - this.x,
+ height: this.height
+ });
+ freeRects.push( freeRect );
+ }
+
+ return freeRects;
+};
+
+proto.canFit = function( rect ) {
+ return this.width >= rect.width && this.height >= rect.height;
+};
+
+return Rect;
+
+}));
+
+/**
+ * Packer
+ * bin-packing algorithm
+ */
+
+( function( window, factory ) {
+ // universal module definition
+ /* jshint strict: false */ /* globals define, module, require */
+ if ( typeof define == 'function' && define.amd ) {
+ // AMD
+ define( 'packery/packer',[ './rect' ], factory );
+ } else if ( typeof module == 'object' && module.exports ) {
+ // CommonJS
+ module.exports = factory(
+ require('./rect')
+ );
+ } else {
+ // browser global
+ var Packery = window.Packery = window.Packery || {};
+ Packery.Packer = factory( Packery.Rect );
+ }
+
+}( window, function factory( Rect ) {
+'use strict';
+
+// -------------------------- Packer -------------------------- //
+
+/**
+ * @param {Number} width
+ * @param {Number} height
+ * @param {String} sortDirection
+ * topLeft for vertical, leftTop for horizontal
+ */
+function Packer( width, height, sortDirection ) {
+ this.width = width || 0;
+ this.height = height || 0;
+ this.sortDirection = sortDirection || 'downwardLeftToRight';
+
+ this.reset();
+}
+
+var proto = Packer.prototype;
+
+proto.reset = function() {
+ this.spaces = [];
+
+ var initialSpace = new Rect({
+ x: 0,
+ y: 0,
+ width: this.width,
+ height: this.height
+ });
+
+ this.spaces.push( initialSpace );
+ // set sorter
+ this.sorter = sorters[ this.sortDirection ] || sorters.downwardLeftToRight;
+};
+
+// change x and y of rect to fit with in Packer's available spaces
+proto.pack = function( rect ) {
+ for ( var i=0; i < this.spaces.length; i++ ) {
+ var space = this.spaces[i];
+ if ( space.canFit( rect ) ) {
+ this.placeInSpace( rect, space );
+ break;
+ }
+ }
+};
+
+proto.columnPack = function( rect ) {
+ for ( var i=0; i < this.spaces.length; i++ ) {
+ var space = this.spaces[i];
+ var canFitInSpaceColumn = space.x <= rect.x &&
+ space.x + space.width >= rect.x + rect.width &&
+ space.height >= rect.height - 0.01; // fudge number for rounding error
+ if ( canFitInSpaceColumn ) {
+ rect.y = space.y;
+ this.placed( rect );
+ break;
+ }
+ }
+};
+
+proto.rowPack = function( rect ) {
+ for ( var i=0; i < this.spaces.length; i++ ) {
+ var space = this.spaces[i];
+ var canFitInSpaceRow = space.y <= rect.y &&
+ space.y + space.height >= rect.y + rect.height &&
+ space.width >= rect.width - 0.01; // fudge number for rounding error
+ if ( canFitInSpaceRow ) {
+ rect.x = space.x;
+ this.placed( rect );
+ break;
+ }
+ }
+};
+
+proto.placeInSpace = function( rect, space ) {
+ // place rect in space
+ rect.x = space.x;
+ rect.y = space.y;
+
+ this.placed( rect );
+};
+
+// update spaces with placed rect
+proto.placed = function( rect ) {
+ // update spaces
+ var revisedSpaces = [];
+ for ( var i=0; i < this.spaces.length; i++ ) {
+ var space = this.spaces[i];
+ var newSpaces = space.getMaximalFreeRects( rect );
+ // add either the original space or the new spaces to the revised spaces
+ if ( newSpaces ) {
+ revisedSpaces.push.apply( revisedSpaces, newSpaces );
+ } else {
+ revisedSpaces.push( space );
+ }
+ }
+
+ this.spaces = revisedSpaces;
+
+ this.mergeSortSpaces();
+};
+
+proto.mergeSortSpaces = function() {
+ // remove redundant spaces
+ Packer.mergeRects( this.spaces );
+ this.spaces.sort( this.sorter );
+};
+
+// add a space back
+proto.addSpace = function( rect ) {
+ this.spaces.push( rect );
+ this.mergeSortSpaces();
+};
+
+// -------------------------- utility functions -------------------------- //
+
+/**
+ * Remove redundant rectangle from array of rectangles
+ * @param {Array} rects: an array of Rects
+ * @returns {Array} rects: an array of Rects
+**/
+Packer.mergeRects = function( rects ) {
+ var i = 0;
+ var rect = rects[i];
+
+ rectLoop:
+ while ( rect ) {
+ var j = 0;
+ var compareRect = rects[ i + j ];
+
+ while ( compareRect ) {
+ if ( compareRect == rect ) {
+ j++; // next
+ } else if ( compareRect.contains( rect ) ) {
+ // remove rect
+ rects.splice( i, 1 );
+ rect = rects[i]; // set next rect
+ continue rectLoop; // bail on compareLoop
+ } else if ( rect.contains( compareRect ) ) {
+ // remove compareRect
+ rects.splice( i + j, 1 );
+ } else {
+ j++;
+ }
+ compareRect = rects[ i + j ]; // set next compareRect
+ }
+ i++;
+ rect = rects[i];
+ }
+
+ return rects;
+};
+
+
+// -------------------------- sorters -------------------------- //
+
+// functions for sorting rects in order
+var sorters = {
+ // top down, then left to right
+ downwardLeftToRight: function( a, b ) {
+ return a.y - b.y || a.x - b.x;
+ },
+ // left to right, then top down
+ rightwardTopToBottom: function( a, b ) {
+ return a.x - b.x || a.y - b.y;
+ }
+};
+
+
+// -------------------------- -------------------------- //
+
+return Packer;
+
+}));
+
+/**
+ * Packery Item Element
+**/
+
+( function( window, factory ) {
+ // universal module definition
+ /* jshint strict: false */ /* globals define, module, require */
+ if ( typeof define == 'function' && define.amd ) {
+ // AMD
+ define( 'packery/item',[
+ 'outlayer/outlayer',
+ './rect'
+ ],
+ factory );
+ } else if ( typeof module == 'object' && module.exports ) {
+ // CommonJS
+ module.exports = factory(
+ require('outlayer'),
+ require('./rect')
+ );
+ } else {
+ // browser global
+ window.Packery.Item = factory(
+ window.Outlayer,
+ window.Packery.Rect
+ );
+ }
+
+}( window, function factory( Outlayer, Rect ) {
+'use strict';
+
+// -------------------------- Item -------------------------- //
+
+var docElemStyle = document.documentElement.style;
+
+var transformProperty = typeof docElemStyle.transform == 'string' ?
+ 'transform' : 'WebkitTransform';
+
+// sub-class Item
+var Item = function PackeryItem() {
+ Outlayer.Item.apply( this, arguments );
+};
+
+var proto = Item.prototype = Object.create( Outlayer.Item.prototype );
+
+var __create = proto._create;
+proto._create = function() {
+ // call default _create logic
+ __create.call( this );
+ this.rect = new Rect();
+};
+
+var _moveTo = proto.moveTo;
+proto.moveTo = function( x, y ) {
+ // don't shift 1px while dragging
+ var dx = Math.abs( this.position.x - x );
+ var dy = Math.abs( this.position.y - y );
+
+ var canHackGoTo = this.layout.dragItemCount && !this.isPlacing &&
+ !this.isTransitioning && dx < 1 && dy < 1;
+ if ( canHackGoTo ) {
+ this.goTo( x, y );
+ return;
+ }
+ _moveTo.apply( this, arguments );
+};
+
+// -------------------------- placing -------------------------- //
+
+proto.enablePlacing = function() {
+ this.removeTransitionStyles();
+ // remove transform property from transition
+ if ( this.isTransitioning && transformProperty ) {
+ this.element.style[ transformProperty ] = 'none';
+ }
+ this.isTransitioning = false;
+ this.getSize();
+ this.layout._setRectSize( this.element, this.rect );
+ this.isPlacing = true;
+};
+
+proto.disablePlacing = function() {
+ this.isPlacing = false;
+};
+
+// ----- ----- //
+
+// remove element from DOM
+proto.removeElem = function() {
+ this.element.parentNode.removeChild( this.element );
+ // add space back to packer
+ this.layout.packer.addSpace( this.rect );
+ this.emitEvent( 'remove', [ this ] );
+};
+
+// ----- dropPlaceholder ----- //
+
+proto.showDropPlaceholder = function() {
+ var dropPlaceholder = this.dropPlaceholder;
+ if ( !dropPlaceholder ) {
+ // create dropPlaceholder
+ dropPlaceholder = this.dropPlaceholder = document.createElement('div');
+ dropPlaceholder.className = 'packery-drop-placeholder';
+ dropPlaceholder.style.position = 'absolute';
+ }
+
+ dropPlaceholder.style.width = this.size.width + 'px';
+ dropPlaceholder.style.height = this.size.height + 'px';
+ this.positionDropPlaceholder();
+ this.layout.element.appendChild( dropPlaceholder );
+};
+
+proto.positionDropPlaceholder = function() {
+ this.dropPlaceholder.style[ transformProperty ] = 'translate(' +
+ this.rect.x + 'px, ' + this.rect.y + 'px)';
+};
+
+proto.hideDropPlaceholder = function() {
+ this.layout.element.removeChild( this.dropPlaceholder );
+};
+
+// ----- ----- //
+
+return Item;
+
+}));
+
+/*!
+ * Packery v2.0.0
+ * Gapless, draggable grid layouts
+ *
+ * Licensed GPLv3 for open source use
+ * or Packery Commercial License for commercial use
+ *
+ * http://packery.metafizzy.co
+ * Copyright 2016 Metafizzy
+ */
+
+( function( window, factory ) {
+ // universal module definition
+ /* jshint strict: false */ /* globals define, module, require */
+ if ( typeof define == 'function' && define.amd ) {
+ // AMD
+ define( [
+ 'get-size/get-size',
+ 'outlayer/outlayer',
+ './rect',
+ './packer',
+ './item'
+ ],
+ factory );
+ } else if ( typeof module == 'object' && module.exports ) {
+ // CommonJS
+ module.exports = factory(
+ require('get-size'),
+ require('outlayer'),
+ require('./rect'),
+ require('./packer'),
+ require('./item')
+ );
+ } else {
+ // browser global
+ window.Packery = factory(
+ window.getSize,
+ window.Outlayer,
+ window.Packery.Rect,
+ window.Packery.Packer,
+ window.Packery.Item
+ );
+ }
+
+}( window, function factory( getSize, Outlayer, Rect, Packer, Item ) {
+'use strict';
+
+// ----- Rect ----- //
+
+// allow for pixel rounding errors IE8-IE11 & Firefox; #227
+Rect.prototype.canFit = function( rect ) {
+ return this.width >= rect.width - 1 && this.height >= rect.height - 1;
+};
+
+// -------------------------- Packery -------------------------- //
+
+// create an Outlayer layout class
+var Packery = Outlayer.create('packery');
+Packery.Item = Item;
+
+var proto = Packery.prototype;
+
+proto._create = function() {
+ // call super
+ Outlayer.prototype._create.call( this );
+
+ // initial properties
+ this.packer = new Packer();
+ // packer for drop targets
+ this.shiftPacker = new Packer();
+ this.isEnabled = true;
+
+ this.dragItemCount = 0;
+
+ // create drag handlers
+ var _this = this;
+ this.handleDraggabilly = {
+ dragStart: function() {
+ _this.itemDragStart( this.element );
+ },
+ dragMove: function() {
+ _this.itemDragMove( this.element, this.position.x, this.position.y );
+ },
+ dragEnd: function() {
+ _this.itemDragEnd( this.element );
+ }
+ };
+
+ this.handleUIDraggable = {
+ start: function handleUIDraggableStart( event, ui ) {
+ // HTML5 may trigger dragstart, dismiss HTML5 dragging
+ if ( !ui ) {
+ return;
+ }
+ _this.itemDragStart( event.currentTarget );
+ },
+ drag: function handleUIDraggableDrag( event, ui ) {
+ if ( !ui ) {
+ return;
+ }
+ _this.itemDragMove( event.currentTarget, ui.position.left, ui.position.top );
+ },
+ stop: function handleUIDraggableStop( event, ui ) {
+ if ( !ui ) {
+ return;
+ }
+ _this.itemDragEnd( event.currentTarget );
+ }
+ };
+
+};
+
+
+// ----- init & layout ----- //
+
+/**
+ * logic before any new layout
+ */
+proto._resetLayout = function() {
+ this.getSize();
+
+ this._getMeasurements();
+
+ // reset packer
+ var width, height, sortDirection;
+ // packer settings, if horizontal or vertical
+ if ( this._getOption('horizontal') ) {
+ width = Infinity;
+ height = this.size.innerHeight + this.gutter;
+ sortDirection = 'rightwardTopToBottom';
+ } else {
+ width = this.size.innerWidth + this.gutter;
+ height = Infinity;
+ sortDirection = 'downwardLeftToRight';
+ }
+
+ this.packer.width = this.shiftPacker.width = width;
+ this.packer.height = this.shiftPacker.height = height;
+ this.packer.sortDirection = this.shiftPacker.sortDirection = sortDirection;
+
+ this.packer.reset();
+
+ // layout
+ this.maxY = 0;
+ this.maxX = 0;
+};
+
+/**
+ * update columnWidth, rowHeight, & gutter
+ * @private
+ */
+proto._getMeasurements = function() {
+ this._getMeasurement( 'columnWidth', 'width' );
+ this._getMeasurement( 'rowHeight', 'height' );
+ this._getMeasurement( 'gutter', 'width' );
+};
+
+proto._getItemLayoutPosition = function( item ) {
+ this._setRectSize( item.element, item.rect );
+ if ( this.isShifting || this.dragItemCount > 0 ) {
+ var packMethod = this._getPackMethod();
+ this.packer[ packMethod ]( item.rect );
+ } else {
+ this.packer.pack( item.rect );
+ }
+
+ this._setMaxXY( item.rect );
+ return item.rect;
+};
+
+proto.shiftLayout = function() {
+ this.isShifting = true;
+ this.layout();
+ delete this.isShifting;
+};
+
+proto._getPackMethod = function() {
+ return this._getOption('horizontal') ? 'rowPack' : 'columnPack';
+};
+
+
+/**
+ * set max X and Y value, for size of container
+ * @param {Packery.Rect} rect
+ * @private
+ */
+proto._setMaxXY = function( rect ) {
+ this.maxX = Math.max( rect.x + rect.width, this.maxX );
+ this.maxY = Math.max( rect.y + rect.height, this.maxY );
+};
+
+/**
+ * set the width and height of a rect, applying columnWidth and rowHeight
+ * @param {Element} elem
+ * @param {Packery.Rect} rect
+ */
+proto._setRectSize = function( elem, rect ) {
+ var size = getSize( elem );
+ var w = size.outerWidth;
+ var h = size.outerHeight;
+ // size for columnWidth and rowHeight, if available
+ // only check if size is non-zero, #177
+ if ( w || h ) {
+ w = this._applyGridGutter( w, this.columnWidth );
+ h = this._applyGridGutter( h, this.rowHeight );
+ }
+ // rect must fit in packer
+ rect.width = Math.min( w, this.packer.width );
+ rect.height = Math.min( h, this.packer.height );
+};
+
+/**
+ * fits item to columnWidth/rowHeight and adds gutter
+ * @param {Number} measurement - item width or height
+ * @param {Number} gridSize - columnWidth or rowHeight
+ * @returns measurement
+ */
+proto._applyGridGutter = function( measurement, gridSize ) {
+ // just add gutter if no gridSize
+ if ( !gridSize ) {
+ return measurement + this.gutter;
+ }
+ gridSize += this.gutter;
+ // fit item to columnWidth/rowHeight
+ var remainder = measurement % gridSize;
+ var mathMethod = remainder && remainder < 1 ? 'round' : 'ceil';
+ measurement = Math[ mathMethod ]( measurement / gridSize ) * gridSize;
+ return measurement;
+};
+
+proto._getContainerSize = function() {
+ if ( this._getOption('horizontal') ) {
+ return {
+ width: this.maxX - this.gutter
+ };
+ } else {
+ return {
+ height: this.maxY - this.gutter
+ };
+ }
+};
+
+
+// -------------------------- stamp -------------------------- //
+
+/**
+ * makes space for element
+ * @param {Element} elem
+ */
+proto._manageStamp = function( elem ) {
+
+ var item = this.getItem( elem );
+ var rect;
+ if ( item && item.isPlacing ) {
+ rect = item.rect;
+ } else {
+ var offset = this._getElementOffset( elem );
+ rect = new Rect({
+ x: this._getOption('originLeft') ? offset.left : offset.right,
+ y: this._getOption('originTop') ? offset.top : offset.bottom
+ });
+ }
+
+ this._setRectSize( elem, rect );
+ // save its space in the packer
+ this.packer.placed( rect );
+ this._setMaxXY( rect );
+};
+
+// -------------------------- methods -------------------------- //
+
+function verticalSorter( a, b ) {
+ return a.position.y - b.position.y || a.position.x - b.position.x;
+}
+
+function horizontalSorter( a, b ) {
+ return a.position.x - b.position.x || a.position.y - b.position.y;
+}
+
+proto.sortItemsByPosition = function() {
+ var sorter = this._getOption('horizontal') ? horizontalSorter : verticalSorter;
+ this.items.sort( sorter );
+};
+
+/**
+ * Fit item element in its current position
+ * Packery will position elements around it
+ * useful for expanding elements
+ *
+ * @param {Element} elem
+ * @param {Number} x - horizontal destination position, optional
+ * @param {Number} y - vertical destination position, optional
+ */
+proto.fit = function( elem, x, y ) {
+ var item = this.getItem( elem );
+ if ( !item ) {
+ return;
+ }
+
+ // stamp item to get it out of layout
+ this.stamp( item.element );
+ // set placing flag
+ item.enablePlacing();
+ this.updateShiftTargets( item );
+ // fall back to current position for fitting
+ x = x === undefined ? item.rect.x: x;
+ y = y === undefined ? item.rect.y: y;
+ // position it best at its destination
+ this.shift( item, x, y );
+ this._bindFitEvents( item );
+ item.moveTo( item.rect.x, item.rect.y );
+ // layout everything else
+ this.shiftLayout();
+ // return back to regularly scheduled programming
+ this.unstamp( item.element );
+ this.sortItemsByPosition();
+ item.disablePlacing();
+};
+
+/**
+ * emit event when item is fit and other items are laid out
+ * @param {Packery.Item} item
+ * @private
+ */
+proto._bindFitEvents = function( item ) {
+ var _this = this;
+ var ticks = 0;
+ function onLayout() {
+ ticks++;
+ if ( ticks != 2 ) {
+ return;
+ }
+ _this.dispatchEvent( 'fitComplete', null, [ item ] );
+ }
+ // when item is laid out
+ item.once( 'layout', onLayout );
+ // when all items are laid out
+ this.once( 'layoutComplete', onLayout );
+};
+
+// -------------------------- resize -------------------------- //
+
+// debounced, layout on resize
+proto.resize = function() {
+ // don't trigger if size did not change
+ // or if resize was unbound. See #285, outlayer#9
+ if ( !this.isResizeBound || !this.needsResizeLayout() ) {
+ return;
+ }
+
+ if ( this.options.shiftPercentResize ) {
+ this.resizeShiftPercentLayout();
+ } else {
+ this.layout();
+ }
+};
+
+/**
+ * check if layout is needed post layout
+ * @returns Boolean
+ */
+proto.needsResizeLayout = function() {
+ var size = getSize( this.element );
+ var innerSize = this._getOption('horizontal') ? 'innerHeight' : 'innerWidth';
+ return size[ innerSize ] != this.size[ innerSize ];
+};
+
+proto.resizeShiftPercentLayout = function() {
+ var items = this._getItemsForLayout( this.items );
+
+ var isHorizontal = this._getOption('horizontal');
+ var coord = isHorizontal ? 'y' : 'x';
+ var measure = isHorizontal ? 'height' : 'width';
+ var segmentName = isHorizontal ? 'rowHeight' : 'columnWidth';
+ var innerSize = isHorizontal ? 'innerHeight' : 'innerWidth';
+
+ // proportional re-align items
+ var previousSegment = this[ segmentName ];
+ previousSegment = previousSegment && previousSegment + this.gutter;
+
+ if ( previousSegment ) {
+ this._getMeasurements();
+ var currentSegment = this[ segmentName ] + this.gutter;
+ items.forEach( function( item ) {
+ var seg = Math.round( item.rect[ coord ] / previousSegment );
+ item.rect[ coord ] = seg * currentSegment;
+ });
+ } else {
+ var currentSize = getSize( this.element )[ innerSize ] + this.gutter;
+ var previousSize = this.packer[ measure ];
+ items.forEach( function( item ) {
+ item.rect[ coord ] = ( item.rect[ coord ] / previousSize ) * currentSize;
+ });
+ }
+
+ this.shiftLayout();
+};
+
+// -------------------------- drag -------------------------- //
+
+/**
+ * handle an item drag start event
+ * @param {Element} elem
+ */
+proto.itemDragStart = function( elem ) {
+ if ( !this.isEnabled ) {
+ return;
+ }
+ this.stamp( elem );
+ // this.ignore( elem );
+ var item = this.getItem( elem );
+ if ( !item ) {
+ return;
+ }
+
+ item.enablePlacing();
+ item.showDropPlaceholder();
+ this.dragItemCount++;
+ this.updateShiftTargets( item );
+};
+
+proto.updateShiftTargets = function( dropItem ) {
+ this.shiftPacker.reset();
+
+ // pack stamps
+ this._getBoundingRect();
+ var isOriginLeft = this._getOption('originLeft');
+ var isOriginTop = this._getOption('originTop');
+ this.stamps.forEach( function( stamp ) {
+ // ignore dragged item
+ var item = this.getItem( stamp );
+ if ( item && item.isPlacing ) {
+ return;
+ }
+ var offset = this._getElementOffset( stamp );
+ var rect = new Rect({
+ x: isOriginLeft ? offset.left : offset.right,
+ y: isOriginTop ? offset.top : offset.bottom
+ });
+ this._setRectSize( stamp, rect );
+ // save its space in the packer
+ this.shiftPacker.placed( rect );
+ }, this );
+
+ // reset shiftTargets
+ var isHorizontal = this._getOption('horizontal');
+ var segmentName = isHorizontal ? 'rowHeight' : 'columnWidth';
+ var measure = isHorizontal ? 'height' : 'width';
+
+ this.shiftTargetKeys = [];
+ this.shiftTargets = [];
+ var boundsSize;
+ var segment = this[ segmentName ];
+ segment = segment && segment + this.gutter;
+
+ if ( segment ) {
+ var segmentSpan = Math.ceil( dropItem.rect[ measure ] / segment );
+ var segs = Math.floor( ( this.shiftPacker[ measure ] + this.gutter ) / segment );
+ boundsSize = ( segs - segmentSpan ) * segment;
+ // add targets on top
+ for ( var i=0; i < segs; i++ ) {
+ this._addShiftTarget( i * segment, 0, boundsSize );
+ }
+ } else {
+ boundsSize = ( this.shiftPacker[ measure ] + this.gutter ) - dropItem.rect[ measure ];
+ this._addShiftTarget( 0, 0, boundsSize );
+ }
+
+ // pack each item to measure where shiftTargets are
+ var items = this._getItemsForLayout( this.items );
+ var packMethod = this._getPackMethod();
+ items.forEach( function( item ) {
+ var rect = item.rect;
+ this._setRectSize( item.element, rect );
+ this.shiftPacker[ packMethod ]( rect );
+
+ // add top left corner
+ this._addShiftTarget( rect.x, rect.y, boundsSize );
+ // add bottom left / top right corner
+ var cornerX = isHorizontal ? rect.x + rect.width : rect.x;
+ var cornerY = isHorizontal ? rect.y : rect.y + rect.height;
+ this._addShiftTarget( cornerX, cornerY, boundsSize );
+
+ if ( segment ) {
+ // add targets for each column on bottom / row on right
+ var segSpan = Math.round( rect[ measure ] / segment );
+ for ( var i=1; i < segSpan; i++ ) {
+ var segX = isHorizontal ? cornerX : rect.x + segment * i;
+ var segY = isHorizontal ? rect.y + segment * i : cornerY;
+ this._addShiftTarget( segX, segY, boundsSize );
+ }
+ }
+ }, this );
+
+};
+
+proto._addShiftTarget = function( x, y, boundsSize ) {
+ var checkCoord = this._getOption('horizontal') ? y : x;
+ if ( checkCoord !== 0 && checkCoord > boundsSize ) {
+ return;
+ }
+ // create string for a key, easier to keep track of what targets
+ var key = x + ',' + y;
+ var hasKey = this.shiftTargetKeys.indexOf( key ) != -1;
+ if ( hasKey ) {
+ return;
+ }
+ this.shiftTargetKeys.push( key );
+ this.shiftTargets.push({ x: x, y: y });
+};
+
+// -------------------------- drop -------------------------- //
+
+proto.shift = function( item, x, y ) {
+ var shiftPosition;
+ var minDistance = Infinity;
+ var position = { x: x, y: y };
+ this.shiftTargets.forEach( function( target ) {
+ var distance = getDistance( target, position );
+ if ( distance < minDistance ) {
+ shiftPosition = target;
+ minDistance = distance;
+ }
+ });
+ item.rect.x = shiftPosition.x;
+ item.rect.y = shiftPosition.y;
+};
+
+function getDistance( a, b ) {
+ var dx = b.x - a.x;
+ var dy = b.y - a.y;
+ return Math.sqrt( dx * dx + dy * dy );
+}
+
+// -------------------------- drag move -------------------------- //
+
+var DRAG_THROTTLE_TIME = 120;
+
+/**
+ * handle an item drag move event
+ * @param {Element} elem
+ * @param {Number} x - horizontal change in position
+ * @param {Number} y - vertical change in position
+ */
+proto.itemDragMove = function( elem, x, y ) {
+ var item = this.isEnabled && this.getItem( elem );
+ if ( !item ) {
+ return;
+ }
+
+ x -= this.size.paddingLeft;
+ y -= this.size.paddingTop;
+
+ var _this = this;
+ function onDrag() {
+ _this.shift( item, x, y );
+ item.positionDropPlaceholder();
+ _this.layout();
+ }
+
+ // throttle
+ var now = new Date();
+ if ( this._itemDragTime && now - this._itemDragTime < DRAG_THROTTLE_TIME ) {
+ clearTimeout( this.dragTimeout );
+ this.dragTimeout = setTimeout( onDrag, DRAG_THROTTLE_TIME );
+ } else {
+ onDrag();
+ this._itemDragTime = now;
+ }
+};
+
+// -------------------------- drag end -------------------------- //
+
+/**
+ * handle an item drag end event
+ * @param {Element} elem
+ */
+proto.itemDragEnd = function( elem ) {
+ var item = this.isEnabled && this.getItem( elem );
+ if ( !item ) {
+ return;
+ }
+
+ clearTimeout( this.dragTimeout );
+ item.element.classList.add('is-positioning-post-drag');
+
+ var completeCount = 0;
+ var _this = this;
+ function onDragEndLayoutComplete() {
+ completeCount++;
+ if ( completeCount != 2 ) {
+ return;
+ }
+ // reset drag item
+ item.element.classList.remove('is-positioning-post-drag');
+ item.hideDropPlaceholder();
+ _this.dispatchEvent( 'dragItemPositioned', null, [ item ] );
+ }
+
+ item.once( 'layout', onDragEndLayoutComplete );
+ this.once( 'layoutComplete', onDragEndLayoutComplete );
+ item.moveTo( item.rect.x, item.rect.y );
+ this.layout();
+ this.dragItemCount = Math.max( 0, this.dragItemCount - 1 );
+ this.sortItemsByPosition();
+ item.disablePlacing();
+ this.unstamp( item.element );
+};
+
+/**
+ * binds Draggabilly events
+ * @param {Draggabilly} draggie
+ */
+proto.bindDraggabillyEvents = function( draggie ) {
+ this._bindDraggabillyEvents( draggie, 'on' );
+};
+
+proto.unbindDraggabillyEvents = function( draggie ) {
+ this._bindDraggabillyEvents( draggie, 'off' );
+};
+
+proto._bindDraggabillyEvents = function( draggie, method ) {
+ var handlers = this.handleDraggabilly;
+ draggie[ method ]( 'dragStart', handlers.dragStart );
+ draggie[ method ]( 'dragMove', handlers.dragMove );
+ draggie[ method ]( 'dragEnd', handlers.dragEnd );
+};
+
+/**
+ * binds jQuery UI Draggable events
+ * @param {jQuery} $elems
+ */
+proto.bindUIDraggableEvents = function( $elems ) {
+ this._bindUIDraggableEvents( $elems, 'on' );
+};
+
+proto.unbindUIDraggableEvents = function( $elems ) {
+ this._bindUIDraggableEvents( $elems, 'off' );
+};
+
+proto._bindUIDraggableEvents = function( $elems, method ) {
+ var handlers = this.handleUIDraggable;
+ $elems
+ [ method ]( 'dragstart', handlers.start )
+ [ method ]( 'drag', handlers.drag )
+ [ method ]( 'dragstop', handlers.stop );
+};
+
+// ----- destroy ----- //
+
+var _destroy = proto.destroy;
+proto.destroy = function() {
+ _destroy.apply( this, arguments );
+ // disable flag; prevent drag events from triggering. #72
+ this.isEnabled = false;
+};
+
+// ----- ----- //
+
+Packery.Rect = Rect;
+Packery.Packer = Packer;
+
+return Packery;
+
+}));
+
generated by cgit v1.2.3 (git 2.25.1) at 2025-12-06 20:02:50 +0000