module timelinelib.canvas.data.transactions¶

class timelinelib.canvas.data.transactions.Transactions[source]¶

Bases: timelinelib.general.observer.Observable

__init__(initial_value, initial_name='', history_size=10)[source]¶: Initialize self. See help(type(self)) for accurate signature.

property value¶

property status¶

clear()[source]¶

move(index)[source]¶

new(name)[source]¶

commit(transaction)[source]¶

rollback(transaction)[source]¶

ensure_is_current(transaction)[source]¶

ensure_not_in_transaction()[source]¶

exception timelinelib.canvas.data.transactions.TransactionError[source]¶: Bases: Exception

class timelinelib.canvas.data.transactions.Transaction[source]¶

Bases: object

__init__(transactions, name, value, parent)[source]¶: Initialize self. See help(type(self)) for accurate signature.

__repr__()[source]¶: Return repr(self).

property name¶

property value¶

property updater¶

property parent¶

commit()[source]¶

rollback()[source]¶

class timelinelib.canvas.data.transactions.ValueUpdater[source]¶

Bases: object

__init__(transaction)[source]¶: Initialize self. See help(type(self)) for accurate signature.