def tree_widget(group, expand, level):
import ipytree
result = ipytree.Tree()
root = TreeNode(group, level=level)
result.add_node(tree_widget_sublist(root, root=True, expand=expand))
return result
def tree_widget(group, expand, level):
try:
import ipytree
except ImportError as error:
raise ImportError(
"{}: Run `pip install zarr[jupyter]` or `conda install ipytree`"
"to get the required ipytree dependency for displaying the tree "
"widget. If using jupyterlab<3, you also need to run "
"`jupyter labextension install ipytree`".format(error))
result = ipytree.Tree()
root = TreeNode(group, level=level)
result.add_node(tree_widget_sublist(root, root=True, expand=expand))
return result
def _tree_default(self):
tree = ipt.Tree()
node1 = MPLNode(name='one')
node2 = MPLNode(name='two')
node3 = K3DNode(name='three')
node4 = K3DNode(name='four', nodes=[node3])
node5 = K3DNode(name='five', nodes=[node4])
tree.add_node(node1)
tree.add_node(node2)
tree.add_node(node5)
for node in [node1, node2, node3, node4, node5]:
node.observe(self.node_selected, 'selected')
return tree
def _get_tree_pane(self):
# provide a method scanning the tree of the model
# components
tree_layout = ipw.Layout(display='flex',
overflow='scroll hidden',
flex_flow='column',
border='solid 1px black',
margin='0px 5px 5px 0px',
padding='1px 1px 15px 1px',
align_items='stretch',
flex_grow="2",
height="30%",
width='100%')
tree_pane = ipt.Tree(layout=tree_layout)
root_node = self.model_tree
tree_pane.nodes = (root_node, )
return tree_pane
