Hi,
i have a treeViewer with DataBinding. If i add a new entry to that treeViewer it is placed correctly in the tree (sorted alphabetically). If i change an entry i fire a PropertyChange event in my model and thus the tree entry is updated to it's new name. But it's not sorted. How can i sort the changed entry? I tried to call my sorting method from my editCommandHandler and it works, but i get an Exception when i close my program if i deleted an entry before i changed one:
!ENTRY org.eclipse.ui 4 0 2011-07-11 15:48:42.800
!MESSAGE assertion failed: Getter called on disposed observable org.eclipse.core.databinding.observable.list.WritableList@55ac459e
!STACK 0
org.eclipse.core.runtime.AssertionFailedException: assertion failed: Getter called on disposed observable org.eclipse.core.databinding.observable.list.WritableList@55ac459e
at org.eclipse.core.runtime.Assert.isTrue(Assert.java:110)
at org.eclipse.core.databinding.observable.ObservableTracker.getterCalled(ObservableTracker.java:252)
at org.eclipse.core.databinding.observable.list.ObservableList.getterCalled(ObservableList.java:241)
at org.eclipse.core.databinding.observable.list.ObservableList.hashCode(ObservableList.java:92)
.....
My View:
public void sortTable() {
treeViewer.setComparator(new ViewerComparator() {
@Override
public int compare(Viewer viewer, Object e1, Object e2) {
if (e1 instanceof Project && e2 instanceof Project)
{
return ((Project) e1).getName().compareToIgnoreCase(
((Project) e2).getName());
}
else if (e1 instanceof Stock && e2 instanceof Stock)
{
return ((Stock) e1).getIdentifier().compareToIgnoreCase(
((Stock) e2).getIdentifier());
}
else
{
throw new IllegalArgumentException("Not comparable: " + e1 + " " + e2);
}
}
});
}
protected DataBindingContext initDataBindings() {
ObservableListTreeContentProvider contentProvider = new MainViewContentProvider();
treeViewer.setContentProvider(contentProvider);
treeViewer.setLabelProvider(new MainViewLabelProvider(contentProvider
.getKnownElements()));
projectsList = new WritableList(model.readProjects(), Project.class);
treeViewer.setInput(projectsList);
DataBindingContext bindingContext = new DataBindingContext();
return bindingContext;
My ContentProvider
public class MainViewContentProvider extends ObservableListTreeContentProvider {
public MainViewContentProvider() {
super(getObservableListFactory(), null);
}
private static IObservableFactory getObservableListFactory() {
return new IObservableFactory() {
@Override
public IObservable createObservable(Object target) {
if (target instanceof IObservableList) {
return (IObservable)target;
}
if (target instanceof ProjectsModel) {
return BeanProperties.list("projects").observe(target);
}
if (target instanceof Project) {
return BeanProperties.list("stocks").observe(target);
}
return null;
}
};
}
@Override
public boolean hasChildren(Object element) {
if (element instanceof List<?>)
return ((List<?>) element).size() > 0;
if (element instanceof Project)
return ((Project) element).getStocks().size() > 0;
return false;
}
}
My LabelProvider
public class MainViewLabelProvider extends ObservableMapLabelProvider{
public MainViewLabelProvider(IObservableSet knownElements) {
super(Properties.observeEach(knownElements,
BeanProperties.values( new String[] {"name",
"identifier" })));
}
@Override
public String getText(Object element) {
String text = new String();
if (element instanceof Project) {
text = (((Project) element).getName() + " ( " +((Project) element).getStocks().size() + " ) ");
return text;
}
if (element instanceof Stock) {
return ((Stock) element).getIdentifier();
}
return null;
}
@Override
public Image getImage(Object element) {
if (element instanceof Project)
{
return PlatformUI.getWorkbench().getSharedImages().getImage(ISharedImages.IMG_OBJ_FOLDER);
}
if (element instanceof Stock) {
return PlatformUI.getWorkbench().getSharedImages().getImage(ISharedImages.IMG_OBJ_FILE);
}
return null;
}
}
Thanks for any help 
[Updated on: Mon, 11 July 2011 14:15]
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