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/LinkHelperDescriptor.java
init();
	}
	void init() {
		id = configElement.getAttribute(ATT_ID);
		IConfigurationElement[] expressions = this.configElement
				.getChildren(EDITOR_INPUT_ENABLEMENT);
		Assert
				.isLegal(
						expressions.length == 1,
						"The linkHelper extension point requires exactly one editorInputEnablement child."); 
		editorInputEnablement = new CustomAndExpression(expressions[0]);
		expressions = configElement.getChildren(SELECTION_ENABLEMENT);
		if (expressions.length > 0) {
			
			
			
			if (expressions[0].getChildren() != null
					&& expressions[0].getChildren().length > 0) {
				selectionEnablement = new CustomAndExpression(expressions[0]);
			}
		}
	}
	/**
	 * @return Returns the id.
	 */
	public String getId() {
		return id;
	}
	/**
	 * Create a link helper instance from this descriptors class attribute.