@Override
public synchronized void dispose() {
for (final IObservable obs : this.dependencies) {
obs.removeChangeListener(this);
}
super.dispose();
}
public ComputedOnChangeValue(final Object valueType, final IObservable... dependencies) {
super(dependencies[0].getRealm());
this.valueType = valueType;
this.dependencies = dependencies;
for (final IObservable obs : dependencies) {
obs.addChangeListener(this);
}
}
public AggregatedObservable aggregate(IObservable observable) {
if (observable instanceof IObservableValue) {
observableValues.add((IObservableValue) observable);
observable.addChangeListener(this);
return this;
}
return null;
}
public void prepare(Object target) {
if (property != null) {
final Object source = getElementByName(target, sourceName);
if (source == null) {
throw new XWTException("No element is found with the name = " + sourceName);
}
IObservable observableValue =
ScopeManager.observeValue(source, source, property, UpdateSourceTrigger.PropertyChanged);
observableValue.addChangeListener(
new AbstractChangeListener(target) {
public void handleChange(ChangeEvent event) {
Class<?> valueType = JFaceXWTDataBinding.getValueType(source.getClass(), property);
if (valueType == null) {
LoggerManager.log(
"Type of the property "
+ property
+ " is not found in "
+ source.getClass().getName());
return;
}
Widget widget = UserData.getWidget(source);
if (widget == null) {
return;
}
//
// test value ==
//
Object realValue = value;
if (value != null) {
IConverter converter = XWT.findConvertor(value.getClass(), valueType);
if (converter != null) {
realValue = converter.convert(value);
}
}
Object newValue = event.getSource();
if (newValue instanceof IObservableValue) {
IObservableValue observableValue = (IObservableValue) newValue;
newValue = observableValue.getValue();
}
if (newValue != null) {
IConverter newConverter = XWT.findConvertor(newValue.getClass(), valueType);
if (newConverter != null) {
newValue = newConverter.convert(newValue);
}
}
if (!Operator.compare(newValue, operator, realValue)) {
restoreValues();
if (oldvalues != null) {
oldvalues.clear();
}
return;
}
if (oldvalues != null && !oldvalues.isEmpty()) {
return;
}
for (SetterBase setter : getSetters()) {
try {
Object oldValue = setter.applyTo(element, true);
if (oldvalues == null) {
oldvalues = new HashMap<SetterBase, Object>();
}
oldvalues.put(setter, oldValue);
} catch (RuntimeException e) {
continue;
}
}
}
});
}
}
/**
* Listen to changes in observable <code>source</code> and fire a {@link PropertyChangeEvent} with
* supplied property name(s) on supplied <code>target</code> whenever the observed instance
* changes.
*
* @param source
* @param target
* @param propertyNames
*/
public static void replicate(IObservable source, Observable target, String... propertyNames) {
source.addChangeListener(new ChangeReplicator(target, propertyNames));
}
protected void bindNestedPojoProperty(
FormToolkit toolkit,
final IMessageManager mmng,
final IPropertyDescriptor complexProperty,
Composite parent,
Object value,
PropertyDescriptor property,
Class<?> complexType) {
String labelText;
String propertyName = property.getName();
Class<?> propertyType = property.getPropertyType();
labelText = capitalize(splitCamelCase(propertyName));
if (complexProperty instanceof ComplexUnionPropertyDescriptor) {
// lets fix up the background colour!
Label label = new Label(parent, SWT.NONE);
label.setText(labelText);
} else {
Label label = toolkit.createLabel(parent, labelText);
}
Control widget;
Class refType = isBeanRef(value, propertyName);
IObservable observable;
if (boolean.class.isAssignableFrom(propertyType)
|| Boolean.class.isAssignableFrom(propertyType)) {
Button checkbox = new Button(parent, SWT.CHECK | SWT.BORDER);
widget = checkbox;
ISWTObservableValue textValue = Forms.observe(checkbox);
observable = textValue;
Forms.bindPojoProperty(
bindingContext,
mmng,
value,
propertyName,
isMandatory(value, propertyName),
labelText,
textValue,
checkbox);
} else if (refType != null) {
Combo combo = new Combo(parent, SWT.NONE | SWT.BORDER);
String[] beanRefs = getBeanRefs(refType);
combo.setItems(beanRefs);
toolkit.adapt(combo, true, true);
widget = combo;
ISWTObservableValue comboValue = WidgetProperties.selection().observe(combo);
observable = comboValue;
Forms.bindPojoProperty(
bindingContext,
mmng,
value,
propertyName,
isMandatory(value, propertyName),
labelText,
comboValue,
combo);
} else if (isEndpointUri(value, propertyName)) {
Combo combo = new Combo(parent, SWT.NONE | SWT.BORDER);
combo.setItems(getEndpointUris());
toolkit.adapt(combo, true, true);
widget = combo;
ISWTObservableValue comboValue = WidgetProperties.selection().observe(combo);
observable = comboValue;
Forms.bindPojoProperty(
bindingContext,
mmng,
value,
propertyName,
isMandatory(value, propertyName),
labelText,
comboValue,
combo);
} else if (Enum.class.isAssignableFrom(propertyType)) {
ComboViewer combo = new ComboViewer(parent, SWT.READ_ONLY | SWT.BORDER);
combo.setContentProvider(ArrayContentProvider.getInstance());
combo.setInput(getEnumValues((Class<? extends Enum>) propertyType));
IViewerObservableValue comboValue = ViewersObservables.observeSingleSelection(combo);
observable = comboValue;
Control control = combo.getControl();
Forms.bindPojoProperty(
bindingContext,
mmng,
value,
propertyName,
isMandatory(value, propertyName),
labelText,
comboValue,
control);
toolkit.adapt(control, true, true);
widget = control;
} else {
Text text = toolkit.createText(parent, "");
widget = text;
// text.setToolTipText(tooltip);
ISWTObservableValue textValue = Forms.observe(text);
observable = textValue;
Forms.bindPojoProperty(
bindingContext,
mmng,
value,
propertyName,
isMandatory(value, propertyName),
labelText,
textValue,
text);
}
widget.setLayoutData(new GridData(GridData.FILL_HORIZONTAL));
if (observable != null && node != null) {
observable.addChangeListener(
new IChangeListener() {
@Override
public void handleChange(ChangeEvent event) {
// lets notify the node that its changed
String id = complexProperty.getId().toString();
fireNodePropertyChangedEvent(id);
}
});
}
}
