How to get similar behaviour as the Java browsing perspective with two commonNavigator views? - eclipse-plugin

Question

I'd like to reproduce the behavior of the Java browsing perspective as so : the user select a file (selectedFile) from a Custom Common Navigator View (VariabilityNavigator) and it displays only the related files to that selection in another Custom Common Navigator View (ConfigFileNavigator). It refreshes automatically as the selection goes.
I use Common navigator because I want to display the package of the related files and not the other ones or the empty ones. That I coded fine.
Could you please walk me thru the steps to do that ? Here is how far I got..
I have successfully coded the first view VariabilityNavigator.
I thought I would use a filter ConfigurationFilesFilter to get the selectedFile and use it to filter the related files.
I can get the selection from the VariabilityNavigator within the select(...) of ConfigurationFilesFilter code below
I then use it to filter the files I want to display using isRelatedToSelection. I haven't write that part yet, but it's not a problem for testing.
This method don't work for several reasons : it doesn't refresh and I have to click on the ConfigFileNavigator to get the result. What it should do : when I click on the first view and it should automatically display the result in the second view. Thanks for your help.
public class ConfigurationFilesFilter extends ViewerFilter {
String selectedFile;
public ConfigurationFilesFilter() {
}
#Override
public boolean select(Viewer viewer, Object parent, Object element) {
selectedFile = getVariabilityNavigatorSelection();
if (isChildElement(element)) {
return handleChild(element);
} else {
// manipulate tree viewer based on select decision for the sub elements
StructuredViewer sviewer = (StructuredViewer) viewer;
ITreeContentProvider provider = (ITreeContentProvider) sviewer.getContentProvider();
for (Object child : provider.getChildren(element)) {
if (select(viewer, element, child)) {
return true;
}
}
return false;
}
}
/**
*
* #param element
* #return true to be displayed
*/
private boolean handleChild(Object element) {
return true;
}
/**
* Check if an element is a java file and if it is related to the selection
*
* #param element
* #return boolean
*/
private boolean isChildElement(Object element) {
if (element instanceof IFile) {
if (((IFile) element).getFileExtension().equals("java")) {
return (isRelatedToSelection((IFile) element));
}
return false;
}
return false;
}
public String getVariabilityNavigatorSelection() {
IWorkbenchPage page = PlatformUI.getWorkbench().getActiveWorkbenchWindow().getActivePage();
IViewPart viewPart = page.findView(VariabilityNavigator.ID);
String VariabilityNavigatorSelection = "" ;
if (viewPart == null) {
VariabilityNavigatorSelection = "open Variability view. \r\nTo do so, open the menu as followed:\r\nWindow > Show view > Other... > SPL > Variability Navigator";
} else {
ISelectionProvider selProvider = viewPart.getSite().getSelectionProvider();
IStructuredSelection sel = (IStructuredSelection) selProvider.getSelection();
if (sel.isEmpty()) {
VariabilityNavigatorSelection = "selection vide";
}
Iterator<?> i = sel.iterator();
while (i.hasNext()) {
final Object o = i.next();
if (o instanceof IFile) {
VariabilityNavigatorSelection = ((IFile) o).getName();
} else
VariabilityNavigatorSelection = "Please select a file";
}
}
if (!VariabilityNavigatorSelection.isEmpty())
printTrace("selectPrint = " + VariabilityNavigatorSelection);
return VariabilityNavigatorSelection;
}