Filter & sort magical layouts http://isotope.metafizzy.co
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/*globals jQuery */
QUnit.test( 'filtering', function( assert ) {
'use strict';
var iso = new Isotope( '#filtering', {
isJQueryFiltering: false,
transitionDuration: 0
});
var ids = getFilteredItemIDs( iso );
assert.equal( ids, '1,2,3,4,5,6,7', 'all items there by default' );
function checkFilter( filter, expectedIDs, message ) {
iso.arrange({ filter: filter });
ids = getFilteredItemIDs( iso );
assert.equal( ids, expectedIDs, message || filter );
}
checkFilter( '.orange', '1,3,6,7' );
checkFilter( '.tall', '3,4,7' );
checkFilter( '.tall.orange', '3,7' );
iso.arrange({
filter: function( elem ) {
var num = parseInt( elem.textContent, 10 );
return num > 5;
}
});
ids = getFilteredItemIDs( iso );
assert.equal( ids, '4,5,7', 'function, text is greater than 5' );
// filter with jQuery
iso.options.isJQueryFiltering = true;
checkFilter( '.orange', '1,3,6,7', '.orange with jQuery' );
checkFilter( '.tall', '3,4,7', '.orange with jQuery' );
checkFilter( '.tall.orange', '3,7', '.tall.orange with jQuery' );
checkFilter( ':not(.orange)', '2,4,5' );
checkFilter( '.orange:not(.tall)', '1,6' );
iso.arrange({
filter: function() {
var num = parseInt( jQuery(this).text(), 10 );
return num > 5;
}
});
ids = getFilteredItemIDs( iso );
assert.equal( ids, '4,5,7', 'function, text is greater than 5, with jQuery' );
// ----- helper ----- //
/*
<div data-item-id="1" class="item orange">5</div>
<div data-item-id="2" class="item">3</div>
<div data-item-id="3" class="item orange tall">2</div>
<div data-item-id="4" class="item tall">9</div>
<div data-item-id="5" class="item">7</div>
<div data-item-id="6" class="item orange">1</div>
<div data-item-id="7" class="item orange tall">8</div>
*/
// return a string of item ids
function getFilteredItemIDs( iso ) {
return iso.filteredItems.map( function( item ) {
return item.element.getAttribute('data-item-id');
});
}
});