Crate zng_ext_undo 

Undo-redo app extension, service and commands.

Services

Services provided by this extension.

• UNDO

Crate

This crate is part of the zng project.

Structs

UNDO

Undo-redo service.

UndoActionMergeArgs

Arguments for UndoAction::merge.

UndoStackInfo

Snapshot of the undo or redo stacks in an UNDO scope.

UndoTransaction

Represents captured undo actions in an UNDO.transaction operation.

UndoVarModifyTag

Identifies var modify requests by undo/redo action.

WidgetUndoScope

Represents a widget undo scope.

Enums

UndoFullOp

Represents a full undo/redo action.

UndoOp

Represents an undo/redo action.

Statics

CLEAR_HISTORY_CMD

Represents the clear history action.

REDO_CMD

Represents the redo action.

UNDO_CMD

Represents the undo action.

UNDO_INTERVAL_VAR

Contextual undo interval.

UNDO_LIMIT_VAR

Contextual undo limit.

Traits

CommandUndoExt

Undo extension methods for commands.

RedoAction

Represents a single redo action.

UndoAction

Represents a single undo action.

UndoInfo

Metadata info about an action registered for undo action.

UndoSelect

Selects actions to undo or redo.

UndoSelector

Represents a type that can select actions for undo or redo once.

WidgetInfoUndoExt

Undo extension methods for widget info.