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POHow to partially update the rich:tree nodes?
 

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  1. POHow to partially update the rich:tree nodes?
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    <p>I am using a rich:tree to display a large amount of data in my application. Each node has a considerable amount of HTML along with drag and drop support for reordering.</p> <p>My problem is that when I drop a node into another, it seems that I have to re-render the whole tree. Is there a way I can chose which nodes to render. since re-order affects only certain nodes, re-rendering the whole tree seems to be unnecessary.</p> <pre><code>&lt;rich:tree toggleType="ajax" var="node" id="segmentTree" nodeClass="rich-node-class" handleClass="abc" iconClass="cde" labelClass="node-lbl"&gt; &lt;rich:treeModelRecursiveAdaptor roots="#{segmentationBean.treeAsList}" nodes="#{node.children}"&gt; &lt;rich:treeNode id="treeNode" styleClass="treeNode" expanded="#{node.expanded}"&gt; &lt;rich:dropTarget acceptedTypes="segments" dropValue="#{node}" render="segmentTree" dropListener="#{segmentationBean.onSegmentReorder}" oncomplete="initializeTree();" /&gt; &lt;/a4j:outputPanel&gt; &lt;/rich:treeNode&gt; &lt;/rich:treeModelRecursiveAdaptor&gt; &lt;/rich:tree&gt; </code></pre> <p>Some more info: If i just try to render the "treeNode" the I see a NPE TreeRenderingContext:</p> <pre><code>public static TreeRenderingContext get(FacesContext context) { return (TreeRenderingContext) context.getAttributes().get(ATTRIBUTE_NAME); } </code></pre> <p>This method returns null for ATTRIBUTE_NAME = "org.richfaces.renderkit.TreeRenderingContext:ATTRIBUTE_NAME". Any help would be greatly appreciated. Thanks.</p>
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    1. PTQuestion
    1. USAmit Tikoo
    1. USAmit Tikoo
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      1. POHow to partially update the rich:tree nodes?
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      1. VTUpMod
    1. COI was able to get the desired functionality. Here is the code <a4j:commandLink rendered="#{node.expanded}" render="treeNode" execute="segmentTree" oncomplete="initializeTree();"> <h:graphicImage library="images" styleClass="collapsed" name="segmentation/collapse.png" /> <a4j:param assignTo="#{node.expanded}" value="false" /> <f:param name="#{treeNodeBinding.clientId}__NEW_NODE_TOGGLE_STATE" value="true" /> <f:param name="#{treeNodeBinding.clientId}__TRIGGER_NODE_AJAX_UPDATE" value="true" /> </a4j:commandLink>
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      1. POHow to partially update the rich:tree nodes?
      1. USAmit Tikoo
 

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