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
private String appearsBeforeId;
	private String toString;
	private Priority priority;
	/**
	 * @param aConfigElement
	 *            A configuration element with the name "actionProvider" and a
	 *            "class" attribute which subclasses
	 *            {@link CommonActionProvider}.
	 */
	public CommonActionProviderDescriptor(IConfigurationElement aConfigElement) {
		super();
		Assert.isTrue(TAG_ACTION_PROVIDER.equals(aConfigElement.getName()));
		configurationElement = aConfigElement;
		pluginId = configurationElement.getContributor().getName();
		isNested = false;
		init();
	}
	/**
	 * @param aConfigElement
	 *            A configuration element with the name "actionProvider" and a
	 *            "class" attribute which subclasses
	 *            {@link CommonActionProvider}.
	 * @param anEnablementExpression
	 *            A configuration element with the name 'enablement' or
	 *            'triggerPoints' and containing an Eclipse Core Expression
	 * @param defaultPriority 
	 * @param anOverrideId
	 *            A unique identifier for this descriptor. Ids can be used as a
	 *            filtering device for activities or viewer***Bindings.