undone 0.3.0

A library for undo and redo.

Undone Changes

0.3.0

• Added an optional context to Action that allows user-defined data to be attached to an action as an alternative to defining a new type of action.
• Changed the return type of the Do and Undo typedefs to be dynamic and removed the DoAsync and UndoAsync typedefs.
• Removed the new Action.async constructor; the new Action constructor now wraps all Do and Undo function calls using new Future.sync to support both synchronous and asynchronous Do and Undo functions.
• Updated API documentation generation to use the new docgen tool.

0.2.15

• Changed the way validation errors at the start of Schedule.call are treated such that they no longer affect the state of the schedule; They are completed as error to the caller with a stack trace, but they no longer modify the state of the schedule.
• Added a stack trace to transaction error continuations; this is equal to the TransactionError.causeStackTrace.

0.2.14

• Fixed a bug in guarded action error completion that was introduced in the previous 0.2.13 release.

0.2.13

• Updated for the Dart 1.0 release.
• Added an optional timeout to Action objects and if it is non-null then guard all calls to do or undo the action with a timer.

0.2.12

• Added handling of StackTrace objects for errors encountered in a schedule:
  • All logged errors now include the stack trace, if any.
  • All action error continuations now receive the stack trace, if any.
  • When a schedule is in STATE_ERROR the stackTrace getter may be used to access the stack trace associated with the error, if any.

0.2.11

• Updated to SDK 0.8.10_r29803.

0.2.10

• Updated to SDK 0.8.7_r29341.

0.2.9

• Updated to SDK 0.7.6_r28108.
• Added an isIdle getter to the Schedule and renamed the busy getter to isBusy; the new getter isIdle is for convenience and is equal to !isBusy.

0.2.8

• Updated to SDK 0.7.1_r27025.
• Added support for non-undoable actions. An undo function is now an optional argument when constructing an action, and if it is null then the action's canUndo field will be false. Non-undoable actions may be executed on a schedule in the same manner as undoable actions, and the order of their execution is guaranteed. However, the non-undoable action is not preserved in the history list (undo stack) and does not affect the state of the schedule in any way.

0.2.7

• Updated to SDK 0.6.21_r26639.

0.2.6

• Updated to SDK 0.6.19_r26297.
• Added the bench package to dev_dependencies to run the unit tests.
• Removed the undone.mirrors library as I believe it only added confusion; if you have a need for the removed SetFieldAction please open an issue in the tracker.

0.2.5

• Updated to SDK 0.5.20.2_r24160.

0.2.4

• Updated to SDK 0.5.13_r23552.
• Switched states stream to use the new StreamController.broadcast that was re-introduced in this SDK version. With this change the Schedule is no longer responsible for checking the paused state (a broadcast stream controller is never considered paused) before adding events to the stream; each subscription will buffer events itself when paused.
• Added Future<String> wait(String state) method to Schedule and updated the tests to use this instead of their former utility function equivalent; the motivation for this is that I have other use cases for this function now outside of testing.

0.2.3

• Updated to SDK 0.5.11_r23200.
• Added mirrors.dart library with a SetField action; this is a separate library so that users conciously import it and its dependency on dart:mirrors.

0.2.2

• Updated to SDK 0.5.7_r22611.
• Handle the change to Completer behavior; they are now completed asynchronously by default. A schedule will now flush pending actions at the end of the series of asynchronous events trigerred by its completers, making it more bulletproof.

0.2.1

• Updated to SDK 0.5.3_r22223.
• Avoid streaming states events unless there is a listener and the stream is not paused. This avoids potential memory leaks that might arise with buffered events.

0.2.0

• Updated to SDK 0.5.0_r21823.

0.1.8

• Updated to SDK 0.4.7_r21548.

0.1.7

• Updated to SDK 0.4.4_r20810.
• Switched to using assert for dead code removal of logging code instead of a const bool; the old mechanism required users to modify the library code to enable logging, which was not ideal. Now, logging will be enabled in 'checked' mode and it will be stripped in 'production' mode.

0.1.6

• Changed the type of Schedule.states to Stream<String> and states are now enumerated as static const String.

0.1.5

• Added logging code to the library; default disabled for dead code elimination.
• Fixed a number of bugs.
• Removed the Timer-based wait utility function from the tests.

0.1.4

• Added timeoutMs to wait test utility function; drone.io was hanging since the new SDK (0.4.3_r20444) so this was added to try and catch the error but now the error is not reproducing. This should catch future test hangs.

0.1.3

• Updated to SDK 0.4.3_r20444.

0.1.2

• Added a link to an article in the README.

0.1.1

• Added documentation link to pubspec.

0.1.0

• README and dartdoc improvements.

0.0.4

• README improvements.

0.0.3

• Updated to SDK 0.4.2_r20259.
• Moved unittest to dev_dependencies.
• Bug fix: continuations on undo(), redo(), to() are now called before we flush pending actions; this ensures continuations see things as a result of the operation they are chained to.

0.0.2

• Added homepage to pubspec.

0.0.1

• Initial release.