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 String getLocalId() {
				return getId();
			}
			public String getPluginId() {
				return configElement.getDeclaringExtension().getNamespaceIdentifier();
			}
		};
		children = configElement.getChildren(TAG_OVERRIDE);
		if (children.length == 0) {
			overridePolicy = OverridePolicy.get(OverridePolicy.InvokeAlwaysRegardlessOfSuppressedExt_LITERAL);
		} else if (children.length == 1) {
			suppressedExtensionId = children[0]
					.getAttribute(ATT_SUPPRESSED_EXT_ID);
			overridePolicy = OverridePolicy.get(children[0]
					.getAttribute(ATT_POLICY));
		} else if (children.length > 1) {
			throw new WorkbenchException(NLS.bind(
					CommonNavigatorMessages.Too_many_elements_Warning,
					new Object[] {
							TAG_OVERRIDE,
							id,configElement.getDeclaringExtension()
							.getNamespaceIdentifier() }));
		}
	}
	/**
	 * @return Returns the icon.
	 */
	public String getIcon() {
		return icon;
	}