WTKX is just a shortcut to instantiating Java objects in code. So, instead of
this:
<TreeView>
<treeData>
<content:TreeBranch>
<content:TreeBranch text="Activity"
icon="org/apache/pivot/tutorials/folder.png">
<content:TreeBranch text="Games"
icon="org/apache/pivot/tutorials/folder.png">
...
</content:TreeBranch>
</content:TreeBranch>
</content:TreeBranch>
</treeData>
</TreeView>
You can do this:
TreeView treeView = new TreeView();
TreeBranch root = new TreeBranch();
TreeBranch activityBranch = new TreeBranch();
root.add(activityBranch);
TreeBranch gamesBranch = new TreeBranch();
activityBranch.add(gamesBranch);
treeView.setTreeData(root);
How Java maps to WTKX is discussed in more detail in the WTKX Primer section of
the tutorial.
Note that a tree node can actually be any type of Object, and a tree branch is
simply any class that implements org.apache.pivot.collections.List. The
TreeNode and TreeBranch classes are simply default implementations that the
default TreeNodeRenderer knows how to handle. For example, the following demo
uses an instance of org.apache.pivot.xml.Element as a branch:
http://svn.apache.org/repos/asf/pivot/trunk/tools/src/org/apache/pivot/tools/xml/
Hope this helps.
Greg
On May 30, 2010, at 10:42 AM, buddhika chamith wrote:
> Hi All,
>
> I was following Tree View example. It only shows how to fill up the tree with
> static data in wtkx. I want the tree to be populated programmatically at
> runtime. The example says this can be achieved as follows. 'A real
> application could load dynamic data and use a custom renderer to present the
> raw data straight to the user.' Can somebody please point me to some code
> sample where this has been done using a custom renderer? Sorry if the
> question is too elementary. I am a complete newbie.
>
> Regards,
> Buddhika
