---
title: onLayout
layout: default
category: tests
---

<section id="copy">
  <p>Tests that <a href="../docs/options.html#onlayout">onLayout callback</a> is triggering properly, after animation/transition has completed.</p>

</section>

<section id="options" class="clearfix">

  {% include filter-buttons.html %}

  {% include sort-buttons.html %}

  <h3>Etc</h3>

  <ul id="etc" class="clearfix">
    <li id="toggle-sizes"><a href="#toggle-sizes">Toggle variable sizes</a></li>
    <li id="insert"><a href="#insert">Insert new elements</a></li>
    <li id="append"><a href='#append'>Append new elements</a></li>
    <li id="shuffle"><a href='#shuffle'>Shuffle</a></li>
  </ul>

</section> <!-- #options -->

<div id="container" class="clickable variable-sizes clearfix">
  {% for elem_number in site.best_of_order %}
    {% assign element = site.elements[elem_number] %}
    {% include element-partial.html %}
  {% endfor %}
</div> <!-- #container -->


<script src="../{{ site.jquery_js }}"></script>
<script src="../{{ site.isotope_js }}"></script>
<script src="../js/fake-element.js"></script>
<script>

  $(function(){
    
    var $container = $('#container');
    
    {% include random-sizes.js %}
    
    var colors = ['red', 'green', 'blue', 'yellow', 'purple', 'orange', 'white'],
        colorI = 0;

    function changeBGColor( $elems, instance ) {
      var color = colors[ colorI % colors.length ];
      $container.css({ background: color })
      colorI++;
      // console.log( $elems.length, instance.$filteredAtoms.length );
    }

    function lmk() {
      // console.log('callback still works');
    }

    $container.isotope({
      itemSelector : '.element',
      onLayout: changeBGColor,
      masonry : {
        columnWidth : 120
      },
      masonryHorizontal : {
        rowHeight: 120
      },
      cellsByRow : {
        columnWidth : 240,
        rowHeight : 240
      },
      cellsByColumn : {
        columnWidth : 240,
        rowHeight : 240
      },
      getSortData : {
        symbol : function( $elem ) {
          return $elem.attr('data-symbol');
        },
        category : function( $elem ) {
          return $elem.attr('data-category');
        },
        number : function( $elem ) {
          return parseInt( $elem.find('.number').text(), 10 );
        },
        weight : function( $elem ) {
          return parseFloat( $elem.find('.weight').text().replace( /[\(\)]/g, '') );
        },
        name : function ( $elem ) {
          return $elem.find('.name').text();
        }
      }
    }, lmk );
      

    var $optionSets = $('#options .option-set'),
        $optionLinks = $optionSets.find('a');
    
    $optionLinks.click(function(){
      var $this = $(this);
      // don't proceed if already selected
      if ( $this.hasClass('selected') ) {
        return false;
      }
      var $optionSet = $this.parents('.option-set');
      $optionSet.find('.selected').removeClass('selected');
      $this.addClass('selected');

      // make option object dynamically, i.e. { filter: '.my-filter-class' }
      var options = {},
          key = $optionSet.attr('data-option-key'),
          value = $this.attr('data-option-value');
      // parse 'false' as false boolean
      value = value === 'false' ? false : value;
      options[ key ] = value;
      if ( key === 'layoutMode' && typeof changeLayoutMode === 'function' ) {
        // changes in layout modes need extra logic
        changeLayoutMode( $this, options )
      } else {
        // otherwise, apply new options
        $container.isotope( options, lmk );
      }
      
      return false;
    });



    $('#insert a').click(function(){
      var $newEls = $( fakeElement.getGroup() );
      $container.isotope( 'insert', $newEls, lmk );

      return false;
    });

    $('#append a').click(function(){
      var $newEls = $( fakeElement.getGroup() );
      $container.append( $newEls ).isotope( 'appended', $newEls, lmk );

      return false;
    });


    // change size of clicked element
    $container.delegate( '.element', 'click', function(){
      $(this).toggleClass('large');
      $container.isotope( 'reLayout', lmk );
    });

    // toggle variable sizes of all elements
    $('#toggle-sizes').find('a').click(function(){
      $container
        .toggleClass('variable-sizes')
        .isotope( 'reLayout', lmk );
      return false;
    });


    var $sortBy = $('#sort-by');
    $('#shuffle a').click(function(){
      $container.isotope( 'shuffle', lmk );
      $sortBy.find('.selected').removeClass('selected');
      $sortBy.find('[data-option-value="random"]').addClass('selected');
      return false;
    });
    
  });
</script>