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<title>iron-focusables-helper tests</title>

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<script src="../../webcomponentsjs/webcomponents-lite.js"></script>

<script src="../../web-component-tester/browser.js"></script>
<link rel="import" href="../../iron-test-helpers/iron-test-helpers.html">
<link rel="import" href="../iron-focusables-helper.html">
<link rel="import" href="test-buttons.html">
<link rel="import" href="test-buttons-wrapper.html">

<style is="custom-style">
  .hidden {
    visibility: hidden;
  }

  .no-display {
    display: none;
  }
</style>

</head>

<body>

<test-fixture id="basic">
  <template>
    <div>
      <h2>Focusables (no tabindex)</h2>
      <div>
        <input class="focusable1" placeholder="1 (nested)">
      </div>
      <a href="#" class="focusable2">2</a>
      <button disabled> disabled button</button>
      <input disabled tabindex="0" value="disabled input with tabindex">
      <div tabindex="-1">not focusable</div>
      <div contenteditable class="focusable3">3</div>
    </div>
  </template>
</test-fixture>

<test-fixture id="tabindex">
  <template>
    <div>
      <h2>Focusables (with tabindex)</h2>
      <div tabindex="0" class="focusable7">7</div>
      <div tabindex="0" class="focusable8">8</div>
      <div tabindex="0" class="focusable9">9</div>
      <div tabindex="0" class="focusable10">10</div>
      <div tabindex="0" class="focusable11">11</div>
      <div tabindex="0" class="focusable12">12</div>
      <div tabindex="-1">not focusable</div>
      <div tabindex="3" class="focusable3">3</div>
      <div tabindex="4" class="focusable4">4</div>
      <div tabindex="5" class="focusable5">5</div>
      <div>
        <div tabindex="1" class="focusable1">1 (nested)</div>
        <div tabindex="6" class="focusable6">6 (nested)</div>
      </div>
      <div tabindex="2" class="focusable2">2</div>
    </div>
  </template>
</test-fixture>

<test-fixture id="shadow">
  <template>
    <test-buttons>
      <h2>focusables in ShadowDOM</h2>
      <input placeholder="type something..">
    </test-buttons>
  </template>
</test-fixture>

<test-fixture id="composed">
  <template>
    <test-buttons-wrapper>
      <input placeholder="type something..">
    </test-buttons-wrapper>
  </template>
</test-fixture>

<script>
  suite('getTabbableNodes', function() {

    test('returns tabbable nodes', function() {
      var node = fixture('basic');
      var focusableNodes = Polymer.IronFocusablesHelper.getTabbableNodes(node);
      assert.equal(focusableNodes.length, 3, '3 nodes are focusable');
      assert.equal(focusableNodes[0], Polymer.dom(node).querySelector('.focusable1'));
      assert.equal(focusableNodes[1], Polymer.dom(node).querySelector('.focusable2'));
      assert.equal(focusableNodes[2], Polymer.dom(node).querySelector('.focusable3'));
    });

    test('includes the root if it has a valid tabindex', function() {
      var node = fixture('basic');
      node.setAttribute('tabindex', '0');
      var focusableNodes = Polymer.IronFocusablesHelper.getTabbableNodes(node);
      assert.equal(focusableNodes.length, 4, '4 focusable nodes');
      assert.notEqual(focusableNodes.indexOf(node), -1, 'root is included');
    });

    test('excludes visibility: hidden elements', function() {
      var node = fixture('basic');
      var focusable = Polymer.dom(node).querySelector('.focusable1');
      focusable.classList.add('hidden');
      var focusableNodes = Polymer.IronFocusablesHelper.getTabbableNodes(node);
      assert.equal(focusableNodes.length, 2, '2 focusable nodes');
      assert.equal(focusableNodes.indexOf(focusable), -1, 'hidden element is not included');
    });

    test('excludes display: none elements', function() {
      var node = fixture('basic');
      var focusable = Polymer.dom(node).querySelector('.focusable1');
      focusable.classList.add('no-display');
      var focusableNodes = Polymer.IronFocusablesHelper.getTabbableNodes(node);
      assert.equal(focusableNodes.length, 2, '2 focusable nodes');
      assert.equal(focusableNodes.indexOf(focusable), -1, 'hidden element is not included');
    });

    test('respects the tabindex order', function() {
      var node = fixture('tabindex');
      var focusableNodes = Polymer.IronFocusablesHelper.getTabbableNodes(node);
      assert.equal(focusableNodes.length, 12, '12 nodes are focusable');
      for (var i = 0; i < 12; i++) {
        assert.equal(focusableNodes[i], Polymer.dom(node).querySelector('.focusable' + (i + 1)));
      }
    });

    test('includes tabbable elements in the shadow dom', function() {
      var node = fixture('shadow');
      var focusableNodes = Polymer.IronFocusablesHelper.getTabbableNodes(node);
      assert.equal(focusableNodes.length, 4, '4 nodes are focusable');
      assert.equal(focusableNodes[0], node.$.button0);
      assert.equal(focusableNodes[1], node.$.button1);
      assert.equal(focusableNodes[2], Polymer.dom(node).querySelector('input'));
      assert.equal(focusableNodes[3], node.$.button2);
    });

    test('handles composition', function() {
      var node = fixture('composed');
      var focusableNodes = Polymer.IronFocusablesHelper.getTabbableNodes(node);
      assert.equal(focusableNodes.length, 6, '6 nodes are focusable');
      assert.equal(focusableNodes[0], node.$.select);
      assert.equal(focusableNodes[1], node.$.wrapped.$.button0);
      assert.equal(focusableNodes[2], node.$.wrapped.$.button1);
      assert.equal(focusableNodes[3], Polymer.dom(node).querySelector('input'));
      assert.equal(focusableNodes[4], node.$.wrapped.$.button2);
      assert.equal(focusableNodes[5], node.$.focusableDiv);
    });

    test('handles distributed nodes', function() {
      var node = fixture('composed');
      var wrapped = node.$.wrapped;
      var focusableNodes = Polymer.IronFocusablesHelper.getTabbableNodes(wrapped);
      assert.equal(focusableNodes.length, 4, '4 nodes are focusable');
      assert.equal(focusableNodes[0], wrapped.$.button0);
      assert.equal(focusableNodes[1], wrapped.$.button1);
      assert.equal(focusableNodes[2], Polymer.dom(node).querySelector('input'));
      assert.equal(focusableNodes[3], wrapped.$.button2);
    });
  });
</script>

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