Here is some Python-UNO code (as tagged in your question) that shows how to implement the XTreeDataModel UNO interface. You'll have to write a lot more code in order to render the nodes in multiple columns and do everything else you want. It may be required to create another class that implements XTreeNode.
import uno
import unohelper
from com.sun.star.awt.tree import XTreeDataModel
def myTree():
document = XSCRIPTCONTEXT.getDocument()
ctx = XSCRIPTCONTEXT.getComponentContext()
smgr = ctx.getServiceManager()
dlgprov = smgr.createInstanceWithArgumentsAndContext(
"com.sun.star.awt.DialogProvider", (document,), ctx)
dlg = dlgprov.createDialog(
"vnd.sun.star.script:Standard.Dialog1?location=application")
treeCtrl = dlg.getControl("TreeControl1")
treeModel = treeCtrl.getModel()
mutableTreeDataModel = smgr.createInstanceWithContext(
"com.sun.star.awt.tree.MutableTreeDataModel", ctx)
rootNode = mutableTreeDataModel.createNode("Root", True)
mutableTreeDataModel.setRoot(rootNode)
myTree = MyTreeDataModel(rootNode)
model = mutableTreeDataModel
childNode1 = model.createNode("Parent 1", True)
rootNode.appendChild(childNode1)
subChildNode = model.createNode("Child 1", True)
childNode1.appendChild(subChildNode)
treeModel.setPropertyValue("DataModel", myTree)
dlg.execute()
dlg.dispose()
class MyTreeDataModel(unohelper.Base, XTreeDataModel):
def __init__(self, root):
self.rootNode = root
def getRoot(self):
return self.rootNode
def addTreeDataModelListener(self, listener):
pass
def removeTreeDataModelListener(self, listener):
pass
More information for working with trees is at https://wiki.openoffice.org/wiki/Going_further_with_Dialog_and_Component#The_New_Tree_Control.
If it turns out that there is no convenient way to do this directly with UNO, I once did this with a JTreeTable in Java. LibreOffice extensions can be written in Java, so perhaps that would solve your needs instead.
