Crate zng_ext_undo

Undo-redo app extension, service and commands.

Crate

This crate is part of the zng project.

Structs

• UNDO
  Undo-redo service.
• UndoActionMergeArgs
  Arguments for UndoAction::merge.
• UndoManager
  Undo-redo app extension.
• 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.