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
if (visibilityId == null) {
				visibilityId = definedId;
			}
			dependsOnId = configurationElement.getAttribute(ATT_DEPENDS_ON);
			overridesId = configurationElement.getAttribute(ATT_OVERRIDES);
			appearsBeforeId = configurationElement.getAttribute(ATT_APPEARS_BEFORE);
			
			if(priority == null) {
				String prio = configurationElement.getAttribute(ATT_PRIORITY);
				if(prio != null)
					priority = Priority.get(prio);
				else
					priority = Priority.NORMAL;
			}
			IConfigurationElement[] children = configurationElement
					.getChildren(TAG_ENABLEMENT);
			
			
			if (children.length == 0 && enablementElement != null) {
				enablement = new CustomAndExpression(enablementElement);
				
			} else if (children.length == 1) {
				enablement = ElementHandler.getDefault().create(
						ExpressionConverter.getDefault(), children[0]);
			} else {
				System.err.println("Incorrect number of expressions: " + 
						TAG_ENABLEMENT
						+ " in navigator extension: " + 
						configurationElement.getDeclaringExtension()
								.getUniqueIdentifier() + " in plugin " +