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
protected Iterator dependentDescriptors() {
		return dependentDescriptors.iterator();
	}
	protected Iterator overridingDescriptors() {
		return overridingDescriptors.iterator();
	}
	/**
	 * @return the id of the contributing plugin
	 */
	public String getPluginId() {
		return pluginId;
	}
	
	public String toString() {
		if (toString == null) {
			toString = "CommonActionProviderDescriptor[definedId=" + getDefinedId() + ", visibilityId=" + getId() + ", dependsOn=" + getDependsOnId() + ", overrides=" + getOverridesId() + "]"; 
		}
		return toString;
	} 
	
	/**
	 * Sorts CommonActionProviderDescriptors by priority, and then by defined id. 
	 * @since 3.2
	 *
	 */
	public static class CommonActionProviderDescriptorCompator implements Comparator { 
		/**
		 * The singleton instance.
		 */
		public static final CommonActionProviderDescriptorCompator INSTANCE = new CommonActionProviderDescriptorCompator();