How can I highlight the tree nodes programmatically without selecting them? Reason being I would want to have my tree read only (not allowing user to make selection) yet want to display the already selected nodes. Any ways to do it? I'm using GXT 3.x.
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One of the first places I look when trying to get answers to GXT questions is the GXT Guides. There are 3 sections on that page which you will find helpful here, Appearance Design, Tree Widgets, and possibly Themes.
I think the best choice here will be creating your own custom
TreeAppearance. I believe that theTreeAppearance.renderNode(...)method will be of most interest.You could also create a custom
TreeView<M>and override theonTextChange(TreeNode<M>, SafeHtml)method. If you look at the source for theTreeViewclass, you should get some ideas on how you can access and manipulate the html for any given node. Once you have access to the html element, you can simply apply a CSS class to achieve the effect you need.