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POHow can I select child node programmatically, in dynatree?
 

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  1. POHow can I select child node programmatically, in dynatree?
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    <p>I'm using jQuery's dynaTree in my application and I want to select the all the child nodes programmatically when a parent node is selected. The structure of my tree is as follows</p> <pre><code>&lt;div id = "tree"&gt; &lt;ul&gt; &lt;li&gt;package 1 &lt;ul&gt; &lt;li&gt;module 1.1 &lt;ul&gt; &lt;li&gt; document 1.1.1&lt;/li&gt; &lt;li&gt; document 1.1.2&lt;/li&gt; &lt;/ul&gt; &lt;/li&gt; &lt;li&gt;module 1.2 &lt;ul&gt; &lt;li&gt;document 1.2.1&lt;/li&gt; &lt;li&gt;document 1.2.2&lt;/li&gt; &lt;/ul&gt; &lt;/li&gt; &lt;/ul&gt; &lt;/li&gt; &lt;li&gt; package 2 &lt;ul&gt; &lt;li&gt; module 2.1 &lt;ul&gt; &lt;li&gt;document 2.1.1&lt;/li&gt; &lt;li&gt;document 2.1.1&lt;/li&gt; &lt;/ul&gt; &lt;/li&gt; &lt;/ul&gt; &lt;/li&gt; &lt;/ul&gt; &lt;/div&gt; </code></pre> <p>Now what I want is that when I click on tree node with title "package 1" all its child nodes i.e (module 1.1, document 1.1.1, document 1.1.2, module 1.2, document 1.2.1, document 1.2.2) should also be selected.</p> <p>Below is the approach I have tried to use:</p> <pre><code>$("#tree").dynatree({ onSelect: function(flag, dtnode) { // This will happen each time a check box is selected/deselected var selectedNodes = dtnode.tree.getSelectedNodes(); var selectedKeys = $.map(selectedNodes, function(node) { //alert(node.data.key); return node.data.key; }); // Set the hidden input field's value to the selected items $('#SelectedItems').val(selectedKeys.join(",")); if (flag) { child = dtnode.childList; alert(child.length); for (i = 0; i &lt; child.length; i++) { var x = child[i].select(true); alert(i); } } }, checkbox: true, onActivate: function(dtnode) { //alert("You activated " + dtnode.data.key); } }); </code></pre> <p>In the <code>if(flag)</code> condition I get all the child nodes of element that is selected by user and it gives me the correct value that I can see from alert(child.length) statement. Then I run the loop to select all the children but loop never goes beyond the statement <code>var x = child[i].select(true);</code></p> <p>And I can never see the statement <code>alert(i)</code> being executed. The result of above statement is that if I select package 1, module 1.1 and document 1.1.1 is also selected but it never executes the <code>alert(i)</code> statement - no other children of package 1 are selected. In my view when first time <code>child[i].select(true)</code> statement is executed it also triggers the on select event of its children thus making a recursion kind of thing</p> <p>Is my thinking correct? No matter what recursion or what on earth it does, it does not complete the loop and execute the very next instruction <code>alert(i)</code>. </p> <p>Please help me in solving this problem. I'm dying to see that alert, any suggestion and help is highly appreciated.</p>
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