2 Copyright 2008 Free Software Foundation, Inc.
3 This file is part of GNU Radio
5 GNU Radio Companion is free software; you can redistribute it and/or
6 modify it under the terms of the GNU General Public License
7 as published by the Free Software Foundation; either version 2
8 of the License, or (at your option) any later version.
10 GNU Radio Companion is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 GNU General Public License for more details.
15 You should have received a copy of the GNU General Public License
16 along with this program; if not, write to the Free Software
17 Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
20 class Element(object):
22 def __init__(self, parent=None):
28 Test the element against failures.
29 Overload this method in sub-classes.
33 ##################################################
34 # Element Validation API
35 ##################################################
36 def validate(self): self._error_messages = list()
37 def is_valid(self): return not self.get_error_messages() or not self.get_enabled()
38 def add_error_message(self, msg): self._error_messages.append(msg)
39 def get_error_messages(self): return self._error_messages
41 def get_enabled(self): return True
43 def get_parent(self): return self._parent
45 ##############################################
47 ##############################################
48 def is_flagged(self): return self._flag
51 if self.get_parent(): self.get_parent().flag()
54 if self.get_parent(): self.get_parent().deflag()
56 ##############################################
57 ## Type testing methods
58 ##############################################
59 def is_element(self): return True
60 def is_platform(self): return False
61 def is_flow_graph(self): return False
62 def is_connection(self): return False
63 def is_block(self): return False
64 def is_source(self): return False
65 def is_sink(self): return False
66 def is_port(self): return False
67 def is_param(self): return False