Bug 296728 [CommonNavigator] Problem with enablement on navigatorContent extension point
If I use the enablement node with the expression "WITH", no variable was found because no real context is given. example : <extension point="org.eclipse.ui.navigator.navigatorContent"> <commonWizard type="new" wizardId="com.mywizard"> <enablement> <with variable="activeWorkbenchWindow.activePerspective"> <equals value="com.myperpective"> </equals> </with> </enablement> </commonWizard> make this error : org.eclipse.core.runtime.CoreException: The variable activeWorkbenchWindow.activePerspective is not defined at org.eclipse.core.internal.expressions.WithExpression.evaluate(WithExpression.java:65) at org.eclipse.core.internal.expressions.CompositeExpression.evaluateAnd(CompositeExpression.java:53) at org.eclipse.core.internal.expressions.EnablementExpression.evaluate(EnablementExpression.java:53) at org.eclipse.ui.internal.navigator.wizards.CommonWizardDescriptor.isEnabledFor(CommonWizardDescriptor.java:145) at org.eclipse.ui.internal.navigator.wizards.CommonWizardDescriptorManager.getEnabledCommonWizardDescriptors(CommonWizardDescriptorManager.java:158) at org.eclipse.ui.navigator.WizardActionGroup.setContext(WizardActionGroup.java:193) at org.eclipse.ui.internal.navigator.resources.actions.NewActionProvider.fillContextMenu(NewActionProvider.java:107) You could do use the currentState of the IEvaluationService. (see WorkbenchWindow line 3035)
bundles/org.eclipse.ui.navigator/src/org/eclipse/ui/internal/navigator/dnd/CommonDropAdapterDescriptor.java
NavigatorPlugin.logError(0, e.getMessage(), e);
			}
		}
		return false;
	}
	/**
	 * 
	 * @return An instance of {@link CommonDropAdapterAssistant} from the
	 *         descriptor or {@link SkeletonCommonDropAssistant}.
	 */
	public CommonDropAdapterAssistant createDropAssistant() {
		try {
			return (CommonDropAdapterAssistant) element
					.createExecutableExtension(ATT_CLASS);
		} catch (CoreException e) {
			NavigatorPlugin.logError(0, e.getMessage(), e);
		} catch (RuntimeException re) {
			NavigatorPlugin.logError(0, re.getMessage(), re);
		}
		return SkeletonCommonDropAssistant.INSTANCE;
	}
	/**
	 * 
	 * @return The content descriptor that contains this drop descriptor.
	 */
	public INavigatorContentDescriptor getContentDescriptor() {
		return contentDescriptor;
	}
}