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/actions/CommonActionProviderDescriptor.java
configurationElement.getDeclaringExtension().getNamespaceIdentifier());
			}
		} catch (CoreException e) {
			NavigatorPlugin.log(IStatus.ERROR, 0, e.getMessage(), e);
		}
	}
	/**
	 * 
	 * @return The instantiated CommonActionProvider for this descriptor as
	 *         declared in the ATT_CLASS attribute or
	 *         {@link SkeletonActionProvider} if a problem occurs while loading
	 *         the instance.
	 */
	public CommonActionProvider createActionProvider() {
		if (hasLoadingFailed) {
			return SkeletonActionProvider.INSTANCE;
		}
		CommonActionProvider provider = null;
		try {
			provider = (CommonActionProvider) configurationElement
					.createExecutableExtension(ATT_CLASS);
		} catch (CoreException exception) {
			NavigatorPlugin.log(exception.getStatus());
			hasLoadingFailed = true;
			provider = SkeletonActionProvider.INSTANCE;
		} catch (Exception e) {
			NavigatorPlugin.log(new Status(IStatus.ERROR,
					NavigatorPlugin.PLUGIN_ID, 0, e.getMessage(), e));
			hasLoadingFailed = true;
			provider = SkeletonActionProvider.INSTANCE;