IExtensionActivationListener (Eclipse Platform API Specification)

```
public interface IExtensionActivationListener
```
An extension activation listener is notified whenever the activation state changes for one or more content extensions.

Since:

3.2

See Also:

INavigatorActivationService, INavigatorActivationService.addExtensionActivationListener(IExtensionActivationListener), INavigatorActivationService.removeExtensionActivationListener(IExtensionActivationListener)

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`void`	`onExtensionActivation(java.lang.String aViewerId, java.lang.String[] theNavigatorExtensionIds, boolean isActive)`

- Method Detail
  - onExtensionActivation
```
void onExtensionActivation(java.lang.String aViewerId,
                           java.lang.String[] theNavigatorExtensionIds,
                           boolean isActive)
```
    Parameters:
    
    aViewerId - The viewer id of the INavigatorContentService
    
    theNavigatorExtensionIds - A sorted array of updated extension ids
    
    isActive - The new activation state of the extensions