def _open_changed ( self ):
        file_name = open_file()
        if file_name != '':
            self.file_name = file_name

# Create the demo:
Handles the user clicking the 'Open...' button.
dataset/ETHPy150Open enthought/traitsui/examples/demo/Standard_Editors/File_Dialog/File_Open.py/FileDialogDemo._open_changed