Example usage for org.eclipse.jface.databinding.conformance.util ValueChangeEventTracker ValueChangeEventTracker

Introduction

In this page you can find the example usage for org.eclipse.jface.databinding.conformance.util ValueChangeEventTracker ValueChangeEventTracker.

Prototype

public ValueChangeEventTracker() 

Source Link

Usage

From source file:org.eclipse.core.tests.databinding.DatabindingContextTest.java

License:Open Source License

/**
 * Asserts that IStatus is populated and change events are fired when a
 * Binding that is associated with a context is in error.
 * /*from ww w  . j  a  v  a 2  s . c o  m*/
 * @throws Exception
 */
public void testValidationError() throws Exception {
    WritableValue targetObservable = WritableValue.withValueType(String.class);
    WritableValue modelObservable = WritableValue.withValueType(String.class);

    final String errorMessage = "error";
    ValueChangeEventTracker errorCounter = new ValueChangeEventTracker();
    ChangeEventTracker errorsCounter = new ChangeEventTracker();

    IObservableValue error = new AggregateValidationStatus(dbc.getBindings(),
            AggregateValidationStatus.MAX_SEVERITY);
    error.addValueChangeListener(errorCounter);
    assertTrue(((IStatus) error.getValue()).isOK());

    IObservableMap errors = dbc.getValidationStatusMap();
    errors.addChangeListener(errorsCounter);
    assertEquals(0, errors.size());

    IValidator validator = new IValidator() {
        public IStatus validate(Object value) {
            return ValidationStatus.error(errorMessage);
        }
    };

    dbc.bindValue(targetObservable, modelObservable, new UpdateValueStrategy().setAfterGetValidator(validator),
            null);

    targetObservable.setValue("");
    assertFalse(((IStatus) error.getValue()).isOK());
    assertEquals(errorMessage, ((IStatus) error.getValue()).getMessage());
    assertEquals(1, errors.size());
    assertEquals(1, errorsCounter.count);
    assertEquals(1, errorCounter.count);
    error.dispose();
}

---