---

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>