IHandler2 (Eclipse Platform API Specification)

All Superinterfaces:

IHandler

All Known Implementing Classes:

AbstractHandler, AbstractHandler, AbstractHandlerWithState, ActionHandler, ActionHandler, CollapseAllHandler, DebugCommandHandler, ExpandAllHandler, FileBufferOperationHandler, MarkerViewHandler, MergeActionHandler, NewPropertySheetHandler, ShowPerspectiveHandler, ShowViewHandler, TextZoomInHandler, TextZoomOutHandler
```
public interface IHandler2
extends IHandler
```
Extend the IHandler interface to provide some context for isEnabled() requests. Clients should use AbstractHandler unless they need to provide their own listener mechanism.

Since:

3.4

See Also:

AbstractHandler

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`void`	`setEnabled(Object evaluationContext)`	Called by the framework to allow the handler to update its enabled state.

Methods inherited from interface org.eclipse.core.commands.IHandler
addHandlerListener, dispose, execute, isEnabled, isHandled, removeHandlerListener

- Method Detail
  - setEnabled
```
void setEnabled(Object evaluationContext)
```
    Called by the framework to allow the handler to update its enabled state.
    
    Parameters:
    
    evaluationContext - the state to evaluate against. May be null which indicates that the handler can query whatever model that is necessary. This context must not be cached.