IUndoStorage
Document Solutions Image Viewer - v7.2.0 / IUndoStorage
Interface: IUndoStorage
Command based undo state storage.
Implemented by
Table of contents
Methods
Accessors
Methods
applyOptions
▸ applyOptions(options): any
Apply undo storage options.
Parameters
| Name | Type |
|---|---|
options |
ViewerOptions |
Returns
any
dispose
▸ dispose(): any
Dispose undo storage.
Returns
any
clear
▸ clear(): any
Clear undo storage.
Returns
any
isCommandSupported
▸ isCommandSupported(command): boolean
Gets a value indicating whether the command specified in the command parameter is supported.
Parameters
| Name | Type |
|---|---|
command |
UndoCommandSupport |
Returns
boolean
execute
▸ execute(command): Promise<void>
Execute a new command.
Parameters
| Name | Type | Description |
|---|---|---|
command |
UndoCommandSupport |
Instance of a command. |
Returns
Promise<void>
onCommandExecuted
▸ onCommandExecuted(command): any
Called after command action has been executed.
Parameters
| Name | Type |
|---|---|
command |
UndoCommandSupport |
Returns
any
undo
▸ undo(): Promise<void>
Undo last action.
Returns
Promise<void>
redo
▸ redo(): Promise<void>
Redo next action.
Returns
Promise<void>
Accessors
hasUndo
• get hasUndo(): boolean
Gets a value indicating whether the undo storage can undo changes.
Returns
boolean
hasRedo
• get hasRedo(): boolean
Gets a value indicating whether the undo storage can redo changes.
Returns
boolean
undoIndex
• get undoIndex(): number
Gets current undo level index.
Returns
number
undoCount
• get undoCount(): number
Gets total undo levels count.
Returns
number
undoInProgress
• get undoInProgress(): boolean
Gets a flag indicating whether an undo/redo or execute operation is in progress.
Returns
boolean