def _createFallbackDnaGroup(self):
"""
Creates a temporary DnaGroup object in which all the DnaSegments
created while in this command will be added as members.
While exiting this command, these segments will be added first taken
away from the temporary group and then added to the DnaGroup of
BuildDna_EditCommand
@see: self.command_will_exit()
@see: BuildDna_EditCommand.callback_addSegments()
"""
if self._fallbackDnaGroup is None:
self.win.assy.part.ensure_toplevel_group()
self._fallbackDnaGroup = DnaGroup("Fallback Dna", self.win.assy,
self.win.assy.part.topnode)
def _createStructure(self):
"""
creates and returns the structure (in this case a L{Group} object that
contains the DNA strand and axis chunks.
@return : group containing that contains the DNA strand and axis chunks.
@rtype: L{Group}
@note: This needs to return a DNA object once that model is implemented
"""
# self.name needed for done message
if self.create_name_from_prefix:
# create a new name
name = self.name = gensym(self.prefix,
self.win.assy) # (in _build_struct)
self._gensym_data_for_reusing_name = (self.prefix, name)
else:
# use externally created name
self._gensym_data_for_reusing_name = None
# (can't reuse name in this case -- not sure what prefix it was
# made with)
name = self.name
# Create the model tree group node.
# Make sure that the 'topnode' of this part is a Group (under which the
# DNa group will be placed), if the topnode is not a group, make it a
# a 'Group' (applicable to Clipboard parts).See part.py
# --Part.ensure_toplevel_group method. This is an important line
# and it fixes bug 2585
self.win.assy.part.ensure_toplevel_group()
dnaGroup = DnaGroup(self.name,
self.win.assy,
self.win.assy.part.topnode,
editCommand=self)
try:
self.win.assy.place_new_geometry(dnaGroup)
return dnaGroup
except (PluginBug, UserError):
# Why do we need UserError here? Mark 2007-08-28
dnaGroup.kill()
raise PluginBug(
"Internal error while trying to create DNA duplex.")
