class Column(MkArray, HasSignals):
def __init__(self, worksheet, ind):
self.data = worksheet.data.columns[ind]
self.worksheet = worksheet
MkArray.__init__(self, worksheet.data.columns, worksheet.data.columns.data, ind)
self.dependencies = set()
def reload(self, ind):
MkArray.__init__(self, self.worksheet.data.columns, self.worksheet.data.columns.data, ind)
self.data = self.worksheet.data.columns[ind]
def set_name(self, name):
self.data.name = name.encode('utf-8')
def get_name(self):
return self.data.name.decode('utf-8')
name = property(get_name, set_name)
def do_set_expr(self, state, expr, setstate=True):
# find dependencies and error-check expression
self.worksheet.record = set()
try:
data = asarray(self.worksheet.evaluate(expr))
except Exception, ar:
print >>sys.stderr, '*****************', ar
raise StopAction, False
newdep = self.worksheet.record
self.worksheet.record = None
# set dependencies
for column in newdep - self.dependencies:
column.connect('data-changed', self.calculate)
for column in self.dependencies - newdep:
column.disconnect('data-changed', self.calculate)
self.dependencies = newdep
# action state
if setstate:
state['old'], state['new'] = self.expr, expr
if self.expr == '':
state['olddata'] = self[:]
self.data.expr = expr.encode('utf-8')
if expr != '':
# set data without triggering a action
MkArray.__setitem__(self, slice(None), data)
self.worksheet.emit('data-changed')
self.emit('data-changed')
return True
def __setitem__(self, key, value):
prev = self[key]
MkArray.__setitem__(self, key, value)
self.worksheet.emit('data-changed')
self.emit('data-changed')
return [key, value, prev]
def undo_set_expr(self, state):
self.do_set_expr(None, state['old'], setstate=False)
if 'olddata' in state:
MkArray.__setitem__(self, slice(None), state['olddata'])
def reload(self, ind):
MkArray.__init__(self, self.worksheet.data.columns, self.worksheet.data.columns.data, ind)
self.data = self.worksheet.data.columns[ind]
def __init__(self, worksheet, ind):
self.data = worksheet.data.columns[ind]
self.worksheet = worksheet
MkArray.__init__(self, worksheet.data.columns, worksheet.data.columns.data, ind)
self.dependencies = set()
def __setitem__(self, key, value):
prev = self[key]
MkArray.__setitem__(self, key, value)
self.worksheet.emit('data-changed')
self.emit('data-changed')
return [key, value, prev]
def undo_set_expr(self, state):
self.do_set_expr(None, state['old'], setstate=False)
if 'olddata' in state:
MkArray.__setitem__(self, slice(None), state['olddata'])
def reload(self, ind):
MkArray.__init__(self, self.worksheet.data.columns, self.worksheet.data.columns.data, ind)
self.data = self.worksheet.data.columns[ind]
def __init__(self, worksheet, ind):
self.data = worksheet.data.columns[ind]
self.worksheet = worksheet
MkArray.__init__(self, worksheet.data.columns, worksheet.data.columns.data, ind)
self.dependencies = set()
