Listening to project explorer changes

If you want to control some actions based on the selection of an element from the project explorer, we can register a post selection changes through service registry.

//Register listener

ISelectionService ss = PlatformUI.getWorkbench().getActiveWorkbenchWindow().getSelectionService();

ProjectExplorerSelectionListener selectionListener = new ProjectExplorerSelectionListener();

ss.addPostSelectionListener(IPageLayout.ID_PROJECT_EXPLORER, selectionListener);

//Listener
import org.eclipse.core.resources.IProject;
import org.eclipse.core.resources.IResource;
import org.eclipse.core.runtime.IAdaptable;
import org.eclipse.jface.viewers.ISelection;
import org.eclipse.jface.viewers.IStructuredSelection;
import org.eclipse.ui.ISelectionListener;
import org.eclipse.ui.IWorkbenchPart;

class ProjectExplorerSelectionListener implements ISelectionListener
{
public void selectionChanged(IWorkbenchPart part, ISelection newSelection)
{
if (newSelection instanceof IStructuredSelection)
{
Object element = ((IStructuredSelection) newSelection).getFirstElement();
if (element instanceof IAdaptable)
{
IResource resource = (IResource) ((IAdaptable) element).getAdapter(IResource.class);
final IProject project = resource.getProject();

//do your action here!!

}
}

}

}