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
String hashCodeString = configElement.getNamespaceIdentifier() + getId();
			hashCode = hashCodeString.hashCode();
			if (hashCode == HASH_CODE_NOT_COMPUTED)
				hashCode++;
		}
		return hashCode;
	}
	/**
	 * @return The descriptor of the <code>suppressedExtensionId</code> if
	 *         non-null.
	 */
	public INavigatorContentDescriptor getOverriddenDescriptor() {
		return overriddenDescriptor;
	}
	/**
	 * @param theOverriddenDescriptor
	 *            The overriddenDescriptor to set.
	 */
	void setOverriddenDescriptor(
			INavigatorContentDescriptor theOverriddenDescriptor) {
		overriddenDescriptor = theOverriddenDescriptor;
	}
	/* (non-Javadoc)
	 * @see org.eclipse.ui.navigator.INavigatorContentDescriptor#hasSaveablesProvider()
	 */
	public boolean hasSaveablesProvider() {
		return providesSaveables;
	}
}