Bug 55090 [Progress] How to show busy in multiple instances of the same view
Currently to get the view busy indicator you have to schedule a job in a workbench part. But what happens when there are multiple instances of a view created, which view should be busy. Ideally, you could instead associate a view type with a job.
bundles/org.eclipse.ui.ide/src/org/eclipse/ui/views/markers/internal/MarkerView.java
if (selection instanceof IStructuredSelection) {
				for (Iterator iterator = ((IStructuredSelection) selection).iterator(); iterator.hasNext();) {
					Object object = iterator.next();
					if (object instanceof IAdaptable) {
						ITaskListResourceAdapter taskListResourceAdapter;
						Object adapter = ((IAdaptable) object).getAdapter(ITaskListResourceAdapter.class);
						if (adapter != null && adapter instanceof ITaskListResourceAdapter) {
							taskListResourceAdapter = (ITaskListResourceAdapter) adapter;
						} else {
							taskListResourceAdapter = DefaultMarkerResourceAdapter.getDefault();
						}
						IResource resource = taskListResourceAdapter.getAffectedResource((IAdaptable) object);
						if (resource != null) {
							resources.add(resource);
						}
					}
				}
			}
		}
		IResource[] focus = new IResource[resources.size()];
		resources.toArray(focus);
		updateFocusResource(focus);
	}
	/**
	 * 
	 * @param resources
	 */
	protected abstract void updateFilterSelection(IResource[] resources);
	
	void updateFocusResource(IResource[] resources) {