TreeNode instance view
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Hi All,
Is there a straight way to get the view of each node in a TreeEditor class for a specific class directly from each instance? Something like: #######################################################
from traits.api import HasTraits, Str, List, Instance from traitsui.api import View, Item, TreeEditor, TreeNode class Foo(HasTraits): def default_trait_view(self):
self.add_trait('n1',10) self.add_trait('n2',20) trait_dict = self._instance_traits() items = [Item(name) for name in sorted(trait_dict)]
return View(*items) class ListFoo(HasTraits): name = Str('List of Foo') foos = List(Foo) no_view = View()
tr = TreeEditor( nodes =[ TreeNode( node_for=[ ListFoo ], auto_open=True,
children='foos', label='=Foo class', view=no_view, ),
TreeNode( node_for=[ Foo ], auto_open=True, children='', label='=Foo class',
view='object.trait_view', ) ], editable=False ) a = Foo() b = Foo() class TreeTest(HasTraits): """ Defines a business partner."""
lfoo = Instance(ListFoo) view = View( Item(name = 'lfoo', editor = tr, show_label = False ),
title = 'Tree Test', buttons = [ 'OK' ], resizable = True, style = 'custom', width = .3,
height = .5 ) lf = ListFoo(name = 'lf', foos = [a,b]) tt = TreeTest(lfoo = lf) tt.configure_traits()
######################################################### Sorry but text formatting is a bit messy after copy and past. This example doesn't raise any error but still not work.
Any advises? Cheers, Eraldo _______________________________________________ Enthought-Dev mailing list [hidden email] https://mail.enthought.com/mailman/listinfo/enthought-dev |
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I create a MyTreeNode class which inherits from TreeNode
I then have a get_view method in that class which returns the view definition (if it hasn't been created yet then I call that object's create_view method) something along the lines of... class MyTreeNode(TreeNode): def get_view(self,object): if isinstance(object,Thing): if self.add: childobject=str(self.add[0]) if childobject.find("Foo")>=0: if object.foolist_view: return object.foolist_view else: object.foolist_view=object.create_foolist_view() return object.foolist_view else: if object.thing_view: return object.thing_view else: object.thing_view=object.create_thing_view() return object.thing_view elif isinstance(object,AnotherThing): if object.anotherthing_view: return object.anotherthing_view else: object.anotherthing_view=object.create_anotherthing_view() return object.ranotherthing_view etc etc Hope that helps. Brennan On 13/06/2012 1:33 p.m., Eraldo Pomponi wrote: Hi All, _______________________________________________ Enthought-Dev mailing list [hidden email] https://mail.enthought.com/mailman/listinfo/enthought-dev |
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Dear Brennan,
On Wed, Jun 13, 2012 at 3:31 PM, Brennan Williams <[hidden email]> wrote:
I tried to follow your suggestion (and others ideas) but without success. The strange thing is that it works fine but the selected item View is never displayed. Any thought? Cheers, Eraldo ########## Updated Code ################################## from traits.api import HasTraits, Str, List, Instance, adapts, Int
from traits.trait_base import xgetattr from traitsui.api import View, Item, TreeEditor, TreeNode, ITreeNodeAdapter, ITreeNode, Include class Foo(HasTraits): view = View() def __init__(self): super(HasTraits, self).__init__() self.create_trait_view() def create_trait_view(self):
self.add_trait('n1', Int(10)) self.add_trait('n2', Int(20)) trait_dict = self._instance_traits() items = [Item(name) for name in sorted(trait_dict)]
self.view = View(*items) class ListFoo(HasTraits): name = Str('List of Foo') foos = List(Foo) class FooObjectAdapter(ITreeNodeAdapter): adapts(Foo, ITreeNode) def allows_children(self): return False def has_children(self):
return False def get_view(self,object): return object.create_trait_view() def get_label(self): label = 'Foo'
return label label = xgetattr( object, label, '' ) if self.formatter is None: return label return self.formatter( object, label )
class MyTreeNode(TreeNode): def get_view(self, object): view = object.create_trait_view() return view no_view = View() # Get a tree editor def _tree_editor(selected=''): """Return a TreeEditor specifically for HDF5 file trees."""
return TreeEditor( nodes =[ TreeNode( node_for=[ ListFoo ], auto_open=True,
children='foos', label='=Foo class', view=no_view, )
], editable=False, selected=selected ) # Get a tree editor def _tree_editor_brennan(selected=''):
"""Return a TreeEditor specifically for HDF5 file trees.""" return TreeEditor( nodes =[ TreeNode( node_for=[ ListFoo ],
auto_open=True, children='foos', label='=Foo class', view=no_view,
), MyTreeNode( node_for=[ Foo ], auto_open=True, children='',
label='=Foo class', view=View(Item('n1')), ) ], editable=False,
selected=selected ) a = Foo() b = Foo() class TreeTest(HasTraits): """ Defines a business partner."""
name = Str('<unknown>') lfoo = Instance(ListFoo) cfoo = Instance(Foo) view = View( Item(name = 'lfoo',
editor = _tree_editor_brennan(selected='cfoo'), show_label = False ), title = 'Tree Test', buttons = [ 'OK' ],
resizable = True, style = 'custom', width = .3, height = .5 ) lf = ListFoo(name = 'lf', foos = [a,b])
tt = TreeTest(name = 'Instance Tree', lfoo = lf) tt.configure_traits()
_______________________________________________ Enthought-Dev mailing list [hidden email] https://mail.enthought.com/mailman/listinfo/enthought-dev |
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On 13/06/2012 3:30 p.m., Eraldo Pomponi wrote:
Dear Brennan,Try commenting out the view= lines in the TreeNode definitions. Having them in probably means that the get_view method is not overriding the view defined by view= and as these are null views initially that is probably the reason you aren't seeing anything.
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