Demo - TreeView Disabled Nodes

by Joel Parks

HTML

<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.2.0/css/bootstrap.min.css">
<link rel="stylesheet" href="https://cdn.grapecity.com/wijmo/5.latest/styles/wijmo.min.css">
<script src="https://cdn.grapecity.com/wijmo/5.latest/controls/wijmo.min.js"></script>
<script src="https://cdn.grapecity.com/wijmo/5.latest/controls/wijmo.nav.min.js"></script>
<div class="container">
    
  <h1>
    Disabled Nodes</h1>

  <p>
    You can disable nodes using the <b>TreeNode</b>'s <b>isDisabled</b>
    property.</p>
  <p>
    Disabled nodes cannot be selected using the mouse or keyboard.</p>

  <button id="btnDisableNode" class="btn btn-default">
    Disable Selected Node
  </button>
  <button id="btnEnableAllNodes" class="btn btn-default">
    Enable All Nodes
  </button>

  <div id="theTree"></div>

</div>

CSS

/* icon shown next to new items */
.new-icon {
  margin-left: 12px;
  transform: rotate(-30deg);
}

/* default trees on this sample */
.wj-treeview {
    display:block;
    height: 350px;
    font-size: 120%;
    margin-top: 8px;
    margin-bottom: 8px;
    padding: 6px;
    background: #f0f0f0;
    box-shadow: 0 3px 6px rgba(0,0,0,0.16), 0 3px 6px rgba(0,0,0,0.23);
}
body {
  margin-bottom: 24pt;
}

JavaScript

onload = function() {

	// create the tree
  var tree = new wijmo.nav.TreeView('#theTree', {
  	itemsSource: getData(),
		displayMemberPath: 'header',
    childItemsPath: 'items',
    showCheckboxes: true
	});
  
	document.getElementById('btnDisableNode').addEventListener('click', function(e) {
		var nd = tree.selectedNode;
		if (nd) {
			nd.isDisabled = true;
		}
  });
	document.getElementById('btnEnableAllNodes').addEventListener('click', function(e) {
		for (var nd = tree.getFirstNode(); nd; nd = nd.next()) {
    	nd.isDisabled = false;
		}
  });

  // get the tree data
  function getData() {
		return [
    	{ header: 'Electronics', items: [
				{ header: 'Trimmers/Shavers' },
        { header: 'Tablets' },
        { header: 'Phones', items: [
					{ header: 'Apple' },
          { header: 'Motorola', newItem: true },
          { header: 'Nokia' },
          { header: 'Samsung' }]
				},
        { header: 'Speakers', newItem: true },
        { header: 'Monitors' }]
			},
      { header: 'Toys', items: [
      	{ header: 'Shopkins' },
        { header: 'Train Sets' },
        { header: 'Science Kit', newItem: true },
        { header: 'Play-Doh' },
        { header: 'Crayola' } ]
			},
			{ header: 'Home', items: [
      	{ header: 'Coffee Maker' },
        { header: 'Breadmaker', newItem: true },
        { header: 'Solar Panel', newItem: true },
        { header: 'Work Table' },
        { header: 'Propane Grill' }]
			}
		];
	}
}