goog.editor.plugins.UndoRedoManager.EventType

Provided By	`goog.editor.plugins.UndoRedoManager.EventType`
Type	`string`

Event types for the events dispatched by undo-redo manager.

Values

BEFORE_REDO	Signifies that the redo method of a state is about to be called. Events of this type will have a `state` property whose value is the state whose redo action is about to be performed. If the event is cancelled the action does not proceed, but the state will still transition between stacks.
BEFORE_UNDO	Signifies that the undo method of a state is about to be called. Events of this type will have a `state` property whose value is the state whose undo action is about to be performed. If the event is cancelled the action does not proceed, but the state will still transition between stacks.
STATE_ADDED	Signifies that a state was just added to the undo stack. Events of this type will have a `state` property whose value is the state that was just added.
STATE_CHANGE	Signifies that he undo or redo stack transitioned between 0 and 1 states, meaning that the ability to peform undo or redo operations has changed.