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 (markerDeltas.length != changes.size()) {
					refreshNeeded = true;
				}
				
				change(MarkerList.createMarkersIgnoringErrors(changes));
			}
						
			
			if (refreshNeeded) {
				markerCountDirty = true;
				refresh();
			}
		}
	};
	
	protected ActionCopyMarker copyAction;
	protected ActionPasteMarker pasteAction;
	protected SelectionProviderAction revealAction;
	protected SelectionProviderAction openAction;
	protected SelectionProviderAction showInNavigatorAction;
	protected SelectionProviderAction deleteAction;
	protected SelectionProviderAction selectAllAction;
	protected SelectionProviderAction propertiesAction;
	
	private ISelectionListener focusListener = new ISelectionListener() {
		public void selectionChanged(IWorkbenchPart part, ISelection selection) {
			MarkerView.this.focusSelectionChanged(part, selection);
		}
	};