motile_plugin.data_model.action_history

Classes

ActionHistory

An action history implementing the ideas from this blog:

Module Contents

class motile_plugin.data_model.action_history.ActionHistory

An action history implementing the ideas from this blog: https://github.com/zaboople/klonk/blob/master/TheGURQ.md Essentially, if you go back and change something after undo-ing, you can always get back to every state if you undo far enough (instead of throwing out the undone actions)

undo_stack: list[motile_plugin.data_model.actions.TracksAction] = []

redo_stack: list[motile_plugin.data_model.actions.TracksAction] = []

property undo_pointer

add_new_action(action: motile_plugin.data_model.actions.TracksAction) → None

Add a newly performed action to the history. Args:

action (TracksAction): The new action to be added to the history.

undo() → bool

Undo the last performed action

Returns:

bool: True if an action was undone, and False if there was no previous action to undo.

redo() → bool

Redo the last undone action

Returns:

bool: True if an action was redone, and False if there was no undone action to redo.