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    <p><strong>1.</strong> If you are trying to modify some part of the existing root first you need to get hold of the root node. You can get hold of your root node using <code>getRootNode()</code> available with your <code>TreeStore</code>. example: </p> <pre><code> var node = treeObject.getStore().getRootNode(); </code></pre> <p>Now, to modify the data, you can make use of <code>data</code> property. For example, if you need to change the root node's text, you can:</p> <pre><code>node.data.text = 'New Root'; // You can access any other property of your node's data model the same way </code></pre> <p><strong>2.</strong> If you need to replace the entire node you can make use of the <code>setRootNode()</code> which is also available with your <code>TreeStore</code>. You will have to pass the appropriate data model used for your TreeStore.</p> <p>Since, you are trying to replace your root, you definitly need to use <code>setRootNode()</code>. Here is an example code replacing the root:</p> <pre><code>//your tree click handler... itemclick : function(view,rec,it,inx,ev) { var root = view.getTreeStore().getRootNode(); var newRoot = root.getChildAt(inx).copy('xx',true); view.getTreeStore().setRootNode(newRoot); } </code></pre> <p>Ideally, this code should work. but there is a <a href="http://www.sencha.com/forum/showthread.php?134844-tree-node-copy%28deep%29-not-working-%284.0.1%29&amp;highlight=tree%20copy" rel="nofollow">small bug</a> in <code>copy()</code> that causes to break this code. A temporary solution (I would not recommend modifying library files) is available at the forum (refer the above link).</p> <p>Another way would be to code your own <code>copy</code> code like:</p> <pre><code>var root = view.getTreeStore().getRootNode(); var newRoot = root.getChildAt(inx); view.getTreeStore().setRootNode(newRoot); // for each child in newRoot, create child for the newly assigned root. </code></pre>
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    1. POHow can I change the rootnode of any treestore at runtime?
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    1. CO@Abdel Olakara Thanks for reply. I edited my question to clear it further. I have list of projects and what I want to do is, show tree as root = "Project 1" when user clicks on Project 1 and root = "Project 2" for click on project 2 and so on.. Hope this helps.
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    2. CO@amar4kintu you can do it using the second method. Use the setRootNode() to make 'Project2' as your root node. but my question is, how do your use go to Project1 after that?
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    3. CO@Abdel Olakara Thanks for reply. Currently I am using border layout in which on left hand side, I have list of projects and on right hand side I have take tabbed panel and one of the tab of that panel is users in project. so when user clicks on project on left side I want to show list of users in that project. Hope this makes sense. From the above store do you think it is possible to change roots to what I need on user click?
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