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/extensions/NavigatorContentDescriptor.java
*/
	public ITreeContentProvider createContentProvider() throws CoreException {
		return (ITreeContentProvider) configElement
				.createExecutableExtension(ATT_CONTENT_PROVIDER);
	}
	/**
	 * 
	 * The content provider could be an instance of {@link ICommonLabelProvider},
	 * but only {@link ILabelProvider} is required.
	 * 
	 * @return An instance of the Label provider defined for this extension
	 * @throws CoreException
	 *             if an instance of the executable extension could not be
	 *             created for any reason
	 */
	public ILabelProvider createLabelProvider() throws CoreException {
		return (ILabelProvider) configElement
				.createExecutableExtension(ATT_LABEL_PROVIDER);
	}
	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.ui.internal.navigator.extensions.INavigatorContentDescriptor#isEnabledByDefault()
	 */
	public boolean isActiveByDefault() {
		return activeByDefault;
	}
	/**
	 * Determine if this content extension would be able to provide children for
	 * the given element.