Problem: how you can get notified when an editor part loses his focus. For getting the focus there is a simple solution to just overwrite the setFocus method of the editor part. Losing the focus is a little bit more difficult and not that obvious.
The solution is to add a part listener, namely IPartListener2 to the page:
public class MyEditor extends EditorPart
{
...
@Override
public void createPartControl(Composite parent)
{
...
getSite().getPage().addPartListener(new org.eclipse.ui.IPartListener2()
{
@Override
public void partActivated(IWorkbenchPartReference partRef) {
}
@Override
public void partBroughtToTop(IWorkbenchPartReference partRef) {
}
@Override
public void partClosed(IWorkbenchPartReference partRef) {
}
@Override
public void partDeactivated(IWorkbenchPartReference partRef) {
System.out.println("Editor Focus lost");
}
@Override
public void partOpened(IWorkbenchPartReference partRef) {
}
@Override
public void partHidden(IWorkbenchPartReference partRef) {
}
@Override
public void partVisible(IWorkbenchPartReference partRef) {
}
@Override
public void partInputChanged(IWorkbenchPartReference partRef) {
}
});
...
}
}
As you can see the listener interface also provides more interesting methods which might be useful.