public void handleListChange(ListChangeEvent event) {
ListDiffEntry[] differences = event.diff.getDifferences();
for (int i = 0; i < differences.length; i++) {
ListDiffEntry entry = differences[i];
if (entry.isAddition()) {
listenerSupport.hookListener(entry.getElement());
} else {
listenerSupport.unhookListener(entry.getElement());
}
}
}
/**
* * (non-Javadoc) * * @see
* org.eclipse.jface.databinding.viewers.ObservableListContentProvider#inputChanged
* (org.eclipse.jface.viewers.Viewer, * java.lang.Object, java.lang.Object)
*/
@SuppressWarnings("unchecked")
@Override
public void inputChanged(Viewer viewer, Object oldInput, Object newInput) {
listenerSupport.unhookAllTargets();
if (observableList != null) {
observableList.removeListChangeListener(listener);
observableList = null;
}
super.inputChanged(viewer, oldInput, newInput);
this.viewer = (StructuredViewer) viewer;
observableList = (ObservableList) newInput;
if (observableList != null) {
observableList.addListChangeListener(listener);
for (Iterator iterator = observableList.iterator(); iterator.hasNext(); ) {
listenerSupport.hookListener(iterator.next());
}
}
}
protected void firstListenerAdded() {
PropertyChangeListener listener =
new PropertyChangeListener() {
public void propertyChange(java.beans.PropertyChangeEvent event) {
if (!updating) {
final ValueDiff diff =
Diffs.createValueDiff(event.getOldValue(), event.getNewValue());
getRealm()
.exec(
new Runnable() {
public void run() {
fireValueChange(diff);
}
});
}
}
};
if (listenerSupport == null) {
listenerSupport = new ListenerSupport(listener, propertyDescriptor.getName());
}
listenerSupport.hookListener(object);
}
private void unhookListener() {
if (listenerSupport != null) {
listenerSupport.dispose();
}
}
