Creates a write-enabled LAYISO command instance.
When false, this command does not create its own undo record.
Gets the global (untranslated) name of the command.
The global name is typically used for programmatic access and should remain consistent across different language localizations.
The global command name
Sets the global (untranslated) name of the command.
The global command name (e.g., 'LINE', 'CIRCLE', 'ZOOM')
Gets the local (translated) name of the command.
The local name is displayed to users and should be localized to the current language/region.
The localized command name
Sets the local (translated) name of the command.
The localized command name (e.g., 'Draw Line', 'Zoom In')
Gets the minimum access mode required to execute this command.
Commands with higher mode requirements can only be executed when the document is opened in a compatible mode. Higher value modes are compatible with lower value modes.
The minimum access mode required
Sets the minimum access mode required to execute this command.
The minimum access mode (Read, Review, or Write)
Gets the custom user-defined data associated with this command.
userData is a generic, strongly-typed container that allows consumers
of the command to attach arbitrary metadata without modifying the
command class itself.
The shape of userData is defined by the generic parameter TUserData
when the command is declared:
The user-defined data object associated with this command
interface MyCommandData {
sourceLayerId: string
isPreview: boolean
}
class MyCommand extends AcEdCommand<MyCommandData> {}
const cmd = new MyCommand()
cmd.userData.sourceLayerId = 'Layer-01'
cmd.userData.isPreview = true
This design provides flexibility similar to THREE.Object3D.userData
while preserving full compile-time type safety.
Runs the isolate-layer workflow.
Preselected entities are consumed immediately. Otherwise the command keeps prompting until the user either changes settings, selects objects, or cancels the command.
Active application context used to update layer states.
Resolves when layer isolation is applied or the command exits.
ProtectedhideHides the application busy overlay started by showBusyIndicator.
ProtectednotifySends a message to the UI module through the global event bus.
Message text to display
Message severity controlling the rendered style
ProtectedonCalled after the command has finished executing.
This lifecycle hook is intended for cleanup or follow-up logic, such as:
The default implementation does nothing.
The current application context
ProtectedonCalled right before the command starts executing.
This lifecycle hook is intended for subclasses that need to perform
setup work before execute() runs, such as:
The default implementation does nothing.
ProtectedshouldReturns true when this command should be wrapped in an undo mark.
ProtectedshowShows the application busy overlay while a long-running operation executes.
Optionalmessage: stringOptional message displayed under the spinner
ProtectedshowDisplays a message in the command-line output.
Message text to render
Message severity controlling the rendered style
OptionalmsgKey: stringOptional localization key associated with the message
Triggers the command execution with proper event handling.
This method should not be overridden by subclasses as it handles
the event notification workflow. Subclasses should implement the
execute() method instead.
The execution flow:
commandWillStart eventexecute() methodcommandEnded eventThe current application context containing view and document
Protectedwith
AutoCAD-like
LAYISOcommand.The command isolates the layers of selected objects. Non-isolated layers are either turned off or locked, depending on the persisted
Settingschoice.Current viewer limitations:
Vpfreezefalls back to global layer-off behavior.Lock and fadefalls back to locking non-isolated layers without changing their visibility.