def open(self, button=None, filename=None):
chooser = ui.ASEFileChooser(self.window.win)
filename = filename or chooser.go()
format = chooser.format
if filename:
try:
self.images.read([filename], slice(None), format)
except Exception as err:
ui.show_io_error(filename, err)
return # Hmm. Is self.images in a consistent state?
self.set_frame(len(self.images) - 1, focus=True)
def readfile(self, filename, format=None):
if filename == self._filename:
# We have this file already
return self._atoms_from_file
from ase.io import read
try:
atoms = read(filename)
except Exception as err:
ui.show_io_error(filename, err)
atoms = None
filename = None
# Cache selected Atoms/filename (or None) for future calls
self._atoms_from_file = atoms
self._filename = filename
return atoms