C# Class MonoDevelop.Components.Commands.CommandManager

Inheritance: IDisposable

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Private Properties

Property	Type	Description
AddUpdateHandler	CommandUpdaterInfo
AddUpdater	void
CanUseBinding	bool
ChainHandler	ICommandArrayTargetHandler
ChainHandler	ICommandArrayUpdateHandler
ChainHandler	ICommandTargetHandler
ChainHandler	ICommandUpdateHandler
CreateMenu	Gtk.Menu
CreateMenuBar	Gtk.MenuBar
CreateMenuBar	Gtk.MenuBar
DefaultDispatchCommand	bool
DefaultUpdateCommandInfo	void
DispatchCommandFromAccel	bool
EndWaitingForUserInteraction	void
GetActiveWidget	object
GetActiveWindow	Gtk.Window
GetCurrentFocusedTopLevelWindow	Gtk.Window
GetFirstCommandTarget	object
GetFocusedChild	Gtk.Widget
GetNextCommandTarget	object
GetTypeHandlerInfo	HandlerTypeInfo
HandleButtonPressEvent	void
HandleFocusInEventHandler	void
HandleWinMotionNotifyEvent	void
IsEmbeddedNSView	bool
IsRootGdkQuartzView	bool
NextMulticastTarget	object
NotifyCommandTargetScanFinished	void
NotifyCommandTargetScanStarted	void
NotifyDeselected	void
NotifyIncompleteKeyPressed	void
NotifyIncompleteKeyReleased	void
NotifyKeyPressed	void
NotifySelected	void
OnCommandActivated	void
OnCommandActivating	void
OnExtensionChange	void
OnKeyPressed	void
OnKeyReleased	void
OnNSEventKeyPress	AppKit.NSEvent
ProcessKeyEvent	bool
RegisterTopWindow	void
RegisterUserInteraction	void
StartStatusUpdater	void
StartWaitingForUserInteraction	void
StopStatusUpdater	void
StopStatusUpdaterIfNeeded	void
TopLevelDestroyed	void
UpdateAppFocusStatus	void
UpdateStatus	bool
UpdateToolbars	void

Public Methods

Method	Description
CommandManager ( ) : System
CommandManager ( Window root ) : System
CreateCommandEntrySet ( Mono.Addins.ExtensionContext ctx, string addinPath ) : MonoDevelop.Components.Commands.CommandEntrySet	Creates a command entry set.
CreateCommandEntrySet ( string addinPath ) : MonoDevelop.Components.Commands.CommandEntrySet	Creates a command entry set.
CreateMenu ( MonoDevelop.Components.Commands.CommandEntrySet entrySet ) : Gtk.Menu	Creates a menu.
CreateMenu ( MonoDevelop.Components.Commands.CommandEntrySet entrySet, EventHandler closeHandler ) : Gtk.Menu	Creates a menu.
CreateMenu ( MonoDevelop.Components.Commands.CommandEntrySet entrySet, object initialTarget ) : Gtk.Menu	Creates the menu.
CreateMenu ( MonoDevelop.Components.Commands.CommandEntrySet entrySet, object initialTarget, EventHandler closeHandler ) : Gtk.Menu	Creates the menu.
CreateMenu ( string addinPath ) : Gtk.Menu	Creates a menu from the provided extension path
CreateNSMenu ( MonoDevelop.Components.Commands.CommandEntrySet entrySet ) : AppKit.NSMenu	Creates a menu.
CreateNSMenu ( MonoDevelop.Components.Commands.CommandEntrySet entrySet, object initialTarget ) : AppKit.NSMenu	Creates the menu.
CreateNSMenu ( MonoDevelop.Components.Commands.CommandEntrySet entrySet, object initialTarget, EventHandler closeHandler ) : AppKit.NSMenu	Creates the menu.
DispatchCommand ( object commandId ) : bool	Dispatches a command. This methods tries to execute a command by looking for a handler in the active command route.
DispatchCommand ( object commandId, CommandSource source ) : bool	Dispatches a command.
DispatchCommand ( object commandId, object dataItem ) : bool	Dispatches a command.
DispatchCommand ( object commandId, object dataItem, CommandSource source ) : bool	Dispatches a command.
DispatchCommand ( object commandId, object dataItem, object initialTarget ) : bool	Dispatches a command.
DispatchCommand ( object commandId, object dataItem, object initialTarget, CommandSource source ) : bool	Dispatches a command.
Dispose ( ) : void
GetActionCommand ( object cmdId ) : MonoDevelop.Components.Commands.ActionCommand	Gets an action command.
GetCommand ( object cmdId ) : MonoDevelop.Components.Commands.Command	Gets a registered command.
GetCommandInfo ( object commandId ) : MonoDevelop.Components.Commands.CommandInfo	Retrieves status information about a command by looking for a handler in the active command route.
GetCommandInfo ( object commandId, CommandTargetRoute targetRoute ) : MonoDevelop.Components.Commands.CommandInfo	Retrieves status information about a command by looking for a handler in the active command route.
GetCommands ( ) : IEnumerable	Gets all registered commands
LoadCommands ( string addinPath ) : void	Loads command definitions from the provided extension path
LoadKeyBindingSchemes ( string addinPath ) : void	Loads key binding schemes from the provided extension path
LoadUserBindings ( ) : void	Loads user defined key bindings.
LockAll ( ) : bool	Disables all commands
RegisterCommand ( MonoDevelop.Components.Commands.Command cmd ) : void	Registers a new command.
RegisterCommandBar ( ICommandBar commandBar ) : void
RegisterCommandTargetVisitor ( ICommandTargetVisitor visitor ) : void	Registers a command target visitor. Command target visitors can be used to visit the whole active command route to perform custom actions on the objects of the route. The command manager periodically visits the command route. The visit frequency varies, but it is usually at least once a second.
RegisterGlobalHandler ( object handler ) : void	Registers a global command handler. Global command handler are added to the end of the command route.
ReportError ( object commandId, string message, Exception ex ) : void
SetRootWindow ( Window root ) : void	Sets the root window. The manager will start the command route at this window, if no other is active.
ShowContextMenu ( Control parent, Gdk evt, MonoDevelop.Components.Commands.CommandEntrySet entrySet, object initialCommandTarget = null ) : bool	Shows a context menu.
ShowContextMenu ( Control parent, Gdk evt, MonoDevelop.Components.Commands.CommandEntrySet entrySet, object initialCommandTarget, EventHandler closeHandler ) : bool	Shows a context menu.
ShowContextMenu ( Control parent, int x, int y, MonoDevelop.Components.Commands.CommandEntrySet entrySet, object initialCommandTarget = null ) : bool	Shows the context menu.
ShowContextMenu ( Control parent, Gdk evt, Mono.Addins.ExtensionContext ctx, string addinPath ) : void	Shows a context menu.
ShowContextMenu ( Control parent, Gdk evt, Gtk menu, object initialCommandTarget = null ) : void	Shows a context menu.
ShowContextMenu ( Control parent, Gdk evt, string addinPath ) : void	Shows a context menu.
ShowContextMenu ( Control parent, int x, int y, Gtk menu, object initialCommandTarget = null ) : void
ToCommandId ( object ob ) : object
UnlockAll ( ) : bool	Unlocks the command manager
UnregisterCommand ( MonoDevelop.Components.Commands.Command cmd ) : void	Unregisters a command.
UnregisterCommandBar ( ICommandBar commandBar ) : void
UnregisterCommandTargetVisitor ( ICommandTargetVisitor visitor ) : void	Unregisters a command target visitor.
UnregisterGlobalHandler ( object handler ) : void	Unregisters a global handler.
VisitCommandTargets ( ICommandTargetVisitor visitor, object initialTarget ) : object	Visits the active command route

Private Methods

Method	Description
AddUpdateHandler ( List methodUpdaters, object cmdId ) : CommandUpdaterInfo
AddUpdater ( List methodUpdaters, MethodInfo method, MonoDevelop.Components.Commands.CommandUpdateHandlerAttribute attr ) : void
CanUseBinding ( KeyboardShortcut chords, KeyboardShortcut accels, KeyBinding &binding, bool &isChord ) : bool
ChainHandler ( ICommandArrayTargetHandler chain, object attr ) : ICommandArrayTargetHandler
ChainHandler ( ICommandArrayUpdateHandler chain, object attr ) : ICommandArrayUpdateHandler
ChainHandler ( ICommandTargetHandler chain, object attr ) : ICommandTargetHandler
ChainHandler ( ICommandUpdateHandler chain, object attr ) : ICommandUpdateHandler
CreateMenu ( MonoDevelop.Components.Commands.CommandEntrySet entrySet, MonoDevelop.Components.Commands.CommandMenu menu ) : Gtk.Menu	Appends commands to a menu
CreateMenuBar ( string addinPath ) : Gtk.MenuBar	Creates a menu bar from the menu definition at the provided extension path
CreateMenuBar ( string name, MonoDevelop.Components.Commands.CommandEntrySet entrySet ) : Gtk.MenuBar	Creates a menu bar.
DefaultDispatchCommand ( MonoDevelop.Components.Commands.ActionCommand cmd, MonoDevelop.Components.Commands.CommandInfo info, object dataItem, object target, CommandSource source ) : bool
DefaultUpdateCommandInfo ( MonoDevelop.Components.Commands.ActionCommand cmd, MonoDevelop.Components.Commands.CommandInfo info ) : void
DispatchCommandFromAccel ( object commandId, object dataItem, object initialTarget ) : bool
EndWaitingForUserInteraction ( ) : void
GetActiveWidget ( Gtk win ) : object
GetActiveWindow ( Gtk win ) : Gtk.Window
GetCurrentFocusedTopLevelWindow ( ) : Gtk.Window
GetFirstCommandTarget ( CommandTargetRoute targetRoute ) : object
GetFocusedChild ( Gtk widget ) : Gtk.Widget
GetNextCommandTarget ( CommandTargetRoute targetRoute, object cmdTarget, bool ignoreDelegator = false ) : object
GetTypeHandlerInfo ( object cmdTarget ) : HandlerTypeInfo
HandleButtonPressEvent ( object o, Gtk args ) : void
HandleFocusInEventHandler ( object o, Gtk args ) : void
HandleWinMotionNotifyEvent ( object o, Gtk args ) : void
IsEmbeddedNSView ( AppKit view ) : bool
IsRootGdkQuartzView ( AppKit view ) : bool
NextMulticastTarget ( CommandTargetRoute targetRoute ) : object
NotifyCommandTargetScanFinished ( ) : void
NotifyCommandTargetScanStarted ( ) : void
NotifyDeselected ( ) : void
NotifyIncompleteKeyPressed ( Gdk ev ) : void
NotifyIncompleteKeyReleased ( Gdk ev ) : void
NotifyKeyPressed ( Gdk ev ) : void
NotifySelected ( MonoDevelop.Components.Commands.CommandInfo cmdInfo ) : void
OnCommandActivated ( object commandId, MonoDevelop.Components.Commands.CommandInfo commandInfo, object dataItem, object target, CommandSource source, System.TimeSpan time ) : void
OnCommandActivating ( object commandId, MonoDevelop.Components.Commands.CommandInfo commandInfo, object dataItem, object target, CommandSource source ) : void
OnExtensionChange ( object s, Mono.Addins.ExtensionNodeEventArgs args ) : void
OnKeyPressed ( object o, Gtk e ) : void
OnKeyReleased ( object o, Gtk e ) : void
OnNSEventKeyPress ( AppKit ev ) : AppKit.NSEvent
ProcessKeyEvent ( Gdk ev ) : bool
RegisterTopWindow ( Gtk win ) : void
RegisterUserInteraction ( ) : void
StartStatusUpdater ( ) : void
StartWaitingForUserInteraction ( ) : void
StopStatusUpdater ( ) : void
StopStatusUpdaterIfNeeded ( ) : void
TopLevelDestroyed ( object o, EventArgs args ) : void
UpdateAppFocusStatus ( bool hasFocus, bool lastFocusedExists ) : void
UpdateStatus ( ) : bool
UpdateToolbars ( ) : void

Method Details

CommandManager() public method

public CommandManager ( ) : System
return	System

CommandManager() public method

public CommandManager ( Window root ) : System
root	Window
return	System

CreateCommandEntrySet() public method

Creates a command entry set.

public CreateCommandEntrySet ( Mono.Addins.ExtensionContext ctx, string addinPath ) : MonoDevelop.Components.Commands.CommandEntrySet
ctx	Mono.Addins.ExtensionContext	/// Extension context to use to query the extension path ///
addinPath	string	/// Extension path with the command definitions ///
return	MonoDevelop.Components.Commands.CommandEntrySet

CreateCommandEntrySet() public method

Creates a command entry set.

public CreateCommandEntrySet ( string addinPath ) : MonoDevelop.Components.Commands.CommandEntrySet
addinPath	string	/// Extension path with the command definitions ///
return	MonoDevelop.Components.Commands.CommandEntrySet

CreateMenu() public method

Creates a menu.

public CreateMenu ( MonoDevelop.Components.Commands.CommandEntrySet entrySet ) : Gtk.Menu
entrySet	MonoDevelop.Components.Commands.CommandEntrySet	/// Entry with the command definitions ///
return	Gtk.Menu

CreateMenu() public method

Creates a menu.

public CreateMenu ( MonoDevelop.Components.Commands.CommandEntrySet entrySet, EventHandler closeHandler ) : Gtk.Menu
entrySet	MonoDevelop.Components.Commands.CommandEntrySet	/// Entry with the command definitions ///
closeHandler	EventHandler	/// EventHandler to be run when the menu closes ///
return	Gtk.Menu

CreateMenu() public method

Creates the menu.

public CreateMenu ( MonoDevelop.Components.Commands.CommandEntrySet entrySet, object initialTarget ) : Gtk.Menu
entrySet	MonoDevelop.Components.Commands.CommandEntrySet	/// Entry with the command definitions ///
initialTarget	object	/// Initial command route target. The command handler will start looking for command handlers in this object. ///
return	Gtk.Menu

CreateMenu() public method

Creates the menu.

public CreateMenu ( MonoDevelop.Components.Commands.CommandEntrySet entrySet, object initialTarget, EventHandler closeHandler ) : Gtk.Menu
entrySet	MonoDevelop.Components.Commands.CommandEntrySet	/// Entry with the command definitions ///
initialTarget	object	/// Initial command route target. The command handler will start looking for command handlers in this object. ///
closeHandler	EventHandler	/// EventHandler to be run when the menu closes ///
return	Gtk.Menu

CreateMenu() public method

Creates a menu from the provided extension path

public CreateMenu ( string addinPath ) : Gtk.Menu
addinPath	string
return	Gtk.Menu

CreateNSMenu() public method

Creates a menu.

public CreateNSMenu ( MonoDevelop.Components.Commands.CommandEntrySet entrySet ) : AppKit.NSMenu
entrySet	MonoDevelop.Components.Commands.CommandEntrySet	/// Entry with the command definitions ///
return	AppKit.NSMenu

CreateNSMenu() public method

Creates the menu.

public CreateNSMenu ( MonoDevelop.Components.Commands.CommandEntrySet entrySet, object initialTarget ) : AppKit.NSMenu
entrySet	MonoDevelop.Components.Commands.CommandEntrySet	/// Entry with the command definitions ///
initialTarget	object	/// Initial command route target. The command handler will start looking for command handlers in this object. ///
return	AppKit.NSMenu

CreateNSMenu() public method

Creates the menu.

public CreateNSMenu ( MonoDevelop.Components.Commands.CommandEntrySet entrySet, object initialTarget, EventHandler closeHandler ) : AppKit.NSMenu
entrySet	MonoDevelop.Components.Commands.CommandEntrySet	/// Entry with the command definitions ///
initialTarget	object	/// Initial command route target. The command handler will start looking for command handlers in this object. ///
closeHandler	EventHandler	/// EventHandler to be run when the menu closes ///
return	AppKit.NSMenu

DispatchCommand() public method

Dispatches a command.

This methods tries to execute a command by looking for a handler in the active command route.

public DispatchCommand ( object commandId ) : bool
commandId	object	/// Identifier of the command ///
return	bool

DispatchCommand() public method

Dispatches a command.

public DispatchCommand ( object commandId, CommandSource source ) : bool
commandId	object	/// Identifier of the command ///
source	CommandSource	/// What is causing the command to be dispatched ///
return	bool

DispatchCommand() public method

Dispatches a command.

public DispatchCommand ( object commandId, object dataItem ) : bool
commandId	object	/// Identifier of the command ///
dataItem	object	/// Data item for the command. It must be one of the data items obtained by calling GetCommandInfo. ///
return	bool

DispatchCommand() public method

Dispatches a command.

public DispatchCommand ( object commandId, object dataItem, CommandSource source ) : bool
commandId	object	/// Identifier of the command ///
dataItem	object	/// Data item for the command. It must be one of the data items obtained by calling GetCommandInfo. ///
source	CommandSource	/// What is causing the command to be dispatched ///
return	bool

DispatchCommand() public method

Dispatches a command.

public DispatchCommand ( object commandId, object dataItem, object initialTarget ) : bool
commandId	object	/// Identifier of the command ///
dataItem	object	/// Data item for the command. It must be one of the data items obtained by calling GetCommandInfo. ///
initialTarget	object	/// Initial command route target. The command handler will start looking for command handlers in this object. ///
return	bool

DispatchCommand() public method

Dispatches a command.

public DispatchCommand ( object commandId, object dataItem, object initialTarget, CommandSource source ) : bool
commandId	object	/// Identifier of the command ///
dataItem	object	/// Data item for the command. It must be one of the data items obtained by calling GetCommandInfo. ///
initialTarget	object	/// Initial command route target. The command handler will start looking for command handlers in this object. ///
source	CommandSource	/// What is causing the command to be dispatched ///
return	bool

Dispose() public method

public Dispose ( ) : void
return	void

GetActionCommand() public method

Gets an action command.

public GetActionCommand ( object cmdId ) : MonoDevelop.Components.Commands.ActionCommand
cmdId	object	/// The command identifier. ///
return	MonoDevelop.Components.Commands.ActionCommand

GetCommand() public method

Gets a registered command.

public GetCommand ( object cmdId ) : MonoDevelop.Components.Commands.Command
cmdId	object	/// The identifier of the command ///
return	MonoDevelop.Components.Commands.Command

GetCommandInfo() public method

Retrieves status information about a command by looking for a handler in the active command route.

public GetCommandInfo ( object commandId ) : MonoDevelop.Components.Commands.CommandInfo
commandId	object	/// Identifier of the command. ///
return	MonoDevelop.Components.Commands.CommandInfo

GetCommandInfo() public method

Retrieves status information about a command by looking for a handler in the active command route.

public GetCommandInfo ( object commandId, CommandTargetRoute targetRoute ) : MonoDevelop.Components.Commands.CommandInfo
commandId	object	/// Identifier of the command. ///
targetRoute	CommandTargetRoute	/// Command route origin ///
return	MonoDevelop.Components.Commands.CommandInfo

GetCommands() public method

Gets all registered commands

public GetCommands ( ) : IEnumerable
return	IEnumerable

LoadCommands() public method

Loads command definitions from the provided extension path

public LoadCommands ( string addinPath ) : void
addinPath	string
return	void

LoadKeyBindingSchemes() public method

Loads key binding schemes from the provided extension path

public LoadKeyBindingSchemes ( string addinPath ) : void
addinPath	string
return	void

LoadUserBindings() public method

Loads user defined key bindings.

public LoadUserBindings ( ) : void
return	void

LockAll() public method

Disables all commands

public LockAll ( ) : bool
return	bool

RegisterCommand() public method

Registers a new command.

public RegisterCommand ( MonoDevelop.Components.Commands.Command cmd ) : void
cmd	MonoDevelop.Components.Commands.Command	/// The command. ///
return	void

RegisterCommandBar() public method

public RegisterCommandBar ( ICommandBar commandBar ) : void
commandBar	ICommandBar
return	void

RegisterCommandTargetVisitor() public method

Registers a command target visitor.

Command target visitors can be used to visit the whole active command route to perform custom actions on the objects of the route. The command manager periodically visits the command route. The visit frequency varies, but it is usually at least once a second.

public RegisterCommandTargetVisitor ( ICommandTargetVisitor visitor ) : void
visitor	ICommandTargetVisitor	/// The visitor. ///
return	void

RegisterGlobalHandler() public method

Registers a global command handler.

Global command handler are added to the end of the command route.

public RegisterGlobalHandler ( object handler ) : void
handler	object	/// The handler ///
return	void

ReportError() public method

public ReportError ( object commandId, string message, Exception ex ) : void
commandId	object
message	string
ex	System.Exception
return	void

SetRootWindow() public method

Sets the root window. The manager will start the command route at this window, if no other is active.

public SetRootWindow ( Window root ) : void
root	Window
return	void

ShowContextMenu() public method

Shows a context menu.

public ShowContextMenu ( Control parent, Gdk evt, MonoDevelop.Components.Commands.CommandEntrySet entrySet, object initialCommandTarget = null ) : bool
parent	Control	/// Widget for which the context menu is being shown ///
evt	Gdk	/// Current event ///
entrySet	MonoDevelop.Components.Commands.CommandEntrySet	/// Entry with the command definitions ///
initialCommandTarget	object	/// Initial command route target. The command handler will start looking for command handlers in this object. ///
return	bool

ShowContextMenu() public method

Shows a context menu.

public ShowContextMenu ( Control parent, Gdk evt, MonoDevelop.Components.Commands.CommandEntrySet entrySet, object initialCommandTarget, EventHandler closeHandler ) : bool
parent	Control	/// Widget for which the context menu is being shown ///
evt	Gdk	/// Current event ///
entrySet	MonoDevelop.Components.Commands.CommandEntrySet	/// Entry with the command definitions ///
initialCommandTarget	object	/// Initial command route target. The command handler will start looking for command handlers in this object. ///
closeHandler	EventHandler	/// An event handler which will be called when the menu closes ///
return	bool

ShowContextMenu() public method

Shows the context menu.

public ShowContextMenu ( Control parent, int x, int y, MonoDevelop.Components.Commands.CommandEntrySet entrySet, object initialCommandTarget = null ) : bool
parent	Control	Widget for which the context menu is shown
x	int	The x coordinate.
y	int	The y coordinate.
entrySet	MonoDevelop.Components.Commands.CommandEntrySet	Entry set with the command definitions
initialCommandTarget	object	Initial command target.
return	bool

ShowContextMenu() public method

Shows a context menu.

public ShowContextMenu ( Control parent, Gdk evt, Mono.Addins.ExtensionContext ctx, string addinPath ) : void
parent	Control	/// Widget for which the context menu is being shown ///
evt	Gdk	/// Current event object ///
ctx	Mono.Addins.ExtensionContext	/// Extension context to use to query the extension path ///
addinPath	string	/// Extension path to the definition of the menu ///
return	void

ShowContextMenu() public method

Shows a context menu.

public ShowContextMenu ( Control parent, Gdk evt, Gtk menu, object initialCommandTarget = null ) : void
parent	Control	/// Widget for which the context menu is being shown ///
evt	Gdk	/// Current event ///
menu	Gtk	/// Menu to be shown ///
initialCommandTarget	object	/// Initial command route target. The command handler will start looking for command handlers in this object. ///
return	void

ShowContextMenu() public method

Shows a context menu.

public ShowContextMenu ( Control parent, Gdk evt, string addinPath ) : void
parent	Control	/// Widget for which the context menu is being shown ///
evt	Gdk	/// Current event object ///
addinPath	string	/// Extension path to the definition of the menu ///
return	void

ShowContextMenu() public method

public ShowContextMenu ( Control parent, int x, int y, Gtk menu, object initialCommandTarget = null ) : void
parent	Control
x	int
y	int
menu	Gtk
initialCommandTarget	object
return	void

ToCommandId() public static method

public static ToCommandId ( object ob ) : object
ob	object
return	object

UnlockAll() public method

Unlocks the command manager

public UnlockAll ( ) : bool
return	bool

UnregisterCommand() public method

Unregisters a command.

public UnregisterCommand ( MonoDevelop.Components.Commands.Command cmd ) : void
cmd	MonoDevelop.Components.Commands.Command	/// The command. ///
return	void

UnregisterCommandBar() public method

public UnregisterCommandBar ( ICommandBar commandBar ) : void
commandBar	ICommandBar
return	void

UnregisterCommandTargetVisitor() public method

Unregisters a command target visitor.

public UnregisterCommandTargetVisitor ( ICommandTargetVisitor visitor ) : void
visitor	ICommandTargetVisitor	/// The visitor. ///
return	void

UnregisterGlobalHandler() public method

Unregisters a global handler.

public UnregisterGlobalHandler ( object handler ) : void
handler	object	/// The handler. ///
return	void

VisitCommandTargets() public method

Visits the active command route

public VisitCommandTargets ( ICommandTargetVisitor visitor, object initialTarget ) : object
visitor	ICommandTargetVisitor	/// Visitor. ///
initialTarget	object	/// Initial target (provide null to use the default initial target) ///
return	object