def get_field(self, name):
""" Return field instance with a given name """
matching_fields = list(filter(lambda field: field.name == name, self._fields))
if len(matching_fields) == 1:
return matching_fields[0]
elif len(matching_fields) > 1:
Out.warn('More than one field with name ' + name + ' defined!')
return None
else:
Out.fine('No field with name ' + name)
return None
def edit(self):
""" Open an editor to edit the filter """
if len(self._constraints) != 0:
Out.warn('Editing filters that already have constraints is not yet supported')
# create initial content
initial_content = '# FILTER EDITOR\n'
initial_content += '# - an asterisk (*) indicates "dont-care" fields\n'
initial_content += '# - you may either\n'
initial_content += '# - simply specify a field such as value = 100n, or\n'
initial_content += '# - you can use regular expressiong i.e. ^R for getting all resistors\n\n'
for field_name in Field.known_names:
initial_content += '\'' + field_name + '\' = *\n'
# run editor
editor = Editor(initial_content)
filter_file_content = editor.run()
# parse content and add fields
fields_dict = editor.parse(filter_file_content)
for name, value in fields_dict.items():
self.add_constraint(name, value)
def add_or_update_field(self, name, value):
""" Add a new (custom) field or replace an existing field """
# warn and return if name is empty
if name == '':
Out.warn('Will not add or update field in ' + self.get_field('Designator').value
+ ' due to empty name')
return
# log when clearing a value
elif value == '':
Out.log('Clearing value of field "' + name + '" in '
+ self.get_field('Designator').value + '.')
# change value of name-matching fields
Out.fine('Changing value of fields matching the name "' + name + '"')
for index, field in enumerate(self._fields):
if field.name == name:
Out.fine('Overwriting value of field #' + str(index) + ' with ' + name + ':' + value)
self._fields[index].value = value
# only designator and value should be visible
if name == 'Designator' or name == 'Value':
self._fields[index].set_visible(True)
else:
self._fields[index].set_visible(False)
return
# Construct and add new custom field
new_field = CustomField.copy(self.get_field('Designator'))
new_field.name = name
new_field.value = value
new_field.number = len(self._fields)
new_field.set_visible(False)
Out.fine('Adding new custom field:' + new_field.serialize())
self._fields.append(new_field)
