public void testPropertyChange() throws Exception {
IWorkbenchWindow window = openTestWindow();
IEvaluationService service = (IEvaluationService) window.getService(IEvaluationService.class);
assertNotNull(service);
MyEval listener = new MyEval();
IExtensionRegistry registry = Platform.getExtensionRegistry();
IConfigurationElement element = null;
IConfigurationElement[] elements =
registry.getConfigurationElementsFor("org.eclipse.core.expressions.definitions");
for (int i = 0; i < elements.length && element == null; i++) {
if (elements[i].getAttribute("id").equals("org.eclipse.ui.tests.defWithPropertyTester")) {
element = elements[i];
}
}
assertNotNull(element);
Expression expr = ExpressionConverter.getDefault().perform(element.getChildren()[0]);
service.addEvaluationListener(expr, listener, IEvaluationService.RESULT);
assertFalse(listener.currentValue);
assertEquals(1, listener.count);
StaticVarPropertyTester.result = true;
assertFalse(listener.currentValue);
assertEquals(1, listener.count);
service.requestEvaluation("org.eclipse.ui.tests.class.method");
assertTrue(listener.currentValue);
assertEquals(2, listener.count);
service.requestEvaluation("org.eclipse.ui.tests.class.method");
assertTrue(listener.currentValue);
assertEquals(2, listener.count);
}
public void testExtensionContributionExpression() throws Exception {
IAction a =
new Action() {
@Override
public void run() {
System.out.println("Hello action");
}
};
final MenuManager manager = new MenuManager();
final ActionContributionItem aci = new ActionContributionItem(a);
IExtensionRegistry reg = Platform.getExtensionRegistry();
IExtensionPoint menusExtension = reg.getExtensionPoint("org.eclipse.ui.menus");
IExtension extension = menusExtension.getExtension(EXTENSION_ID);
IConfigurationElement[] mas = extension.getConfigurationElements();
final Expression activeContextExpr[] = new Expression[1];
for (IConfigurationElement ma : mas) {
IConfigurationElement[] items = ma.getChildren();
for (IConfigurationElement item : items) {
String id = item.getAttribute("id");
if (id != null && id.equals("org.eclipse.ui.tests.menus.itemX1")) {
IConfigurationElement visibleWhenElement = item.getChildren("visibleWhen")[0];
activeContextExpr[0] =
ExpressionConverter.getDefault().perform(visibleWhenElement.getChildren()[0]);
}
}
}
assertNotNull("Failed to find expression", activeContextExpr[0]);
AbstractContributionFactory factory =
new AbstractContributionFactory(LOCATION, TestPlugin.PLUGIN_ID) {
@Override
public void createContributionItems(
IServiceLocator menuService, IContributionRoot additions) {
additions.addContributionItem(aci, activeContextExpr[0]);
}
};
menuService.addContributionFactory(factory);
menuService.populateContributionManager(manager, LOCATION);
assertFalse("starting state", aci.isVisible());
activeContext = contextService.activateContext(MenuContributionHarness.CONTEXT_TEST1_ID);
final Menu menu = manager.createContextMenu(window.getShell());
menu.notifyListeners(SWT.Show, new Event());
assertTrue("active context", aci.isVisible());
menu.notifyListeners(SWT.Hide, new Event());
contextService.deactivateContext(activeContext);
activeContext = null;
menu.notifyListeners(SWT.Show, new Event());
assertFalse("after deactivation", aci.isVisible());
menu.notifyListeners(SWT.Hide, new Event());
menuService.releaseContributions(manager);
menuService.removeContributionFactory(factory);
manager.dispose();
}
public Expression getEnablementExpression() throws CoreException {
if (fEnablementExpression == null) {
IConfigurationElement[] elements = fConfig.getChildren(ExpressionTagNames.ENABLEMENT);
IConfigurationElement enablement = elements.length > 0 ? elements[0] : null;
if (enablement != null) {
fEnablementExpression = ExpressionConverter.getDefault().perform(enablement);
}
}
return fEnablementExpression;
}
public boolean matches(IJavaProject javaProject) {
if (fStatus != null) {
return fStatus.booleanValue();
}
IConfigurationElement[] children =
fConfigurationElement.getChildren(ExpressionTagNames.ENABLEMENT);
if (children.length == 1) {
try {
ExpressionConverter parser = ExpressionConverter.getDefault();
Expression expression = parser.perform(children[0]);
EvaluationContext evalContext = new EvaluationContext(null, javaProject);
evalContext.addVariable("project", javaProject); // $NON-NLS-1$
evalContext.addVariable(
"sourceLevel", javaProject.getOption(JavaCore.COMPILER_SOURCE, true)); // $NON-NLS-1$
return expression.evaluate(evalContext) == EvaluationResult.TRUE;
} catch (CoreException e) {
JavaPlugin.log(e);
}
return false;
}
fStatus = Boolean.FALSE;
return false;
}
/** @see ActionUI#getEnabledWhen() */
@Override
public Expression getEnabledWhen() {
IConfigurationElement[] children = conf.getChildren("enabledWhen");
if (children != null && children.length > 0) {
// get child of enabled when
children = children[0].getChildren();
if (children != null && children.length > 0) {
try {
return ElementHandler.getDefault()
.create(ExpressionConverter.getDefault(), children[0]);
} catch (CoreException e) {
log.error("Could not evaluate expression for action enablement.", e);
}
}
}
return null;
}
