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POSmartGWT: TreeGrid expand empty folder resets the tree
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  1. POSmartGWT: TreeGrid expand empty folder resets the tree
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    copied!<p>I am building a TreeGrid with data from an XML type DataSource, as in SmartClient showcase.</p> <p>I am using Windows XP and SmartGWT version 3.0, GWT SDK 2.4.0 (using Eclipse IDE).</p> <p>However, the problem is when I try to expand an empty folder, the <strong>tree closes itself/resets</strong> and <strong>resetting all selections made to none</strong> (since i'm using a checkbox tree selection type), and also I got this error(warning):</p> <pre><code>[ERROR] [testtree] - 15:19:26.637:XRP0:WARN:ResultTree:isc_ResultTree_0 (created by: isc_TreeGrid_0):Adding node to tree with id property set to:1. A node with this ID is already present in this Tree - that node will be replaced. Note that this warning may be disabled by setting the reportCollisions attribute to false. </code></pre> <p>This is actually very much alike with this (<a href="http://forums.smartclient.com/showthread.php?t=20167" rel="nofollow">http://forums.smartclient.com/showthread.php?t=20167</a>), however he does not explain the solution. :(</p> <p>This is the test values i use for the XML data source:</p> <pre><code>... &lt;record&gt; &lt;id&gt;1&lt;/id&gt; &lt;parentId&gt;0&lt;/parentId&gt; &lt;name&gt;test1&lt;/name&gt; &lt;/record&gt; &lt;record&gt; &lt;id&gt;2&lt;/id&gt; &lt;parentId&gt;1&lt;/parentId&gt; &lt;name&gt;test41&lt;/name&gt; &lt;/record&gt; &lt;record&gt; &lt;id&gt;3&lt;/id&gt; &lt;parentId&gt;2&lt;/parentId&gt; &lt;name&gt;test2&lt;/name&gt; &lt;/record&gt; &lt;record&gt; &lt;id&gt;4&lt;/id&gt; &lt;parentId&gt;3&lt;/parentId&gt; &lt;name&gt;test212&lt;/name&gt; &lt;/record&gt; </code></pre> <p>This is the screenshot of the problem; (sorry not enough rep cannot post images) <strong>before</strong> I clicked the expand button: <a href="http://imgur.com/Gtzh6" rel="nofollow">link (imgur image)</a> and, <strong>after</strong>: <a href="http://imgur.com/zr1Nk" rel="nofollow">link</a></p> <p>According to the image above, this problem will occur if I try to expand <code>'test212'</code>, or <code>'test2'</code>.</p> <p>and this is the snippet of my TreeGrid properties:</p> <pre><code>... TreeGrid test = new TreeGrid(); test.setAutoFetchData(true); test.setDataSource(SingletonDS.getInstance()); test.setSelectionAppearance(SelectionAppearance.CHECKBOX); test.setShowPartialSelection(true); test.setShowSelectedStyle(false); layout.addMember(test); </code></pre> <p>and this is the properties of my singleton DataSource:</p> <pre><code>... singleton.setDataFormat(DSDataFormat.XML); singleton.setID("singletonDS"); DataSourceIntegerField idField = new DataSourceIntegerField("id", "ID"); idField.setPrimaryKey(true); DataSourceIntegerField parentIdField = new DataSourceIntegerField("parentId", "Parent ID"); parentIdField.setForeignKey(singleton.getID()+".id"); parentId.setRootValue(0); DataSourceTextField nameField = new DataSourceTextField("name", "Name"); singleton.setFields(idField, parentIdField, nameField); ... </code></pre> <p>Note: the XML data is already passed correctly into the grid.</p> <p>Thanks for your help! :)</p>
 

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