Bug 89625 [IDE] IDEWorkbenchWindowAdvisor refers to workbench internals for backdrop
3.1 M5 The code in IDEWorkbenchWindowAdvisor to provide the backdrop when all perspectives are closed refers to internal workbench classes: import org.eclipse.ui.internal.IWorkbenchGraphicConstants; import org.eclipse.ui.internal.WorkbenchImages; import org.eclipse.ui.internal.dialogs.SelectPerspectiveDialog; This should be done using only API.
bundles/org.eclipse.ui.ide/src/org/eclipse/ui/internal/ide/IDEWorkbenchWindowAdvisor.java
public void perspectiveActivated(IWorkbenchPage page,
                            IPerspectiveDescriptor perspective) {
                        updateTitle();
                    }
                    public void perspectiveChanged(IWorkbenchPage page,
                            IPerspectiveDescriptor perspective, String changeId) {
                        
                    }
                });
        configurer.getWindow().getPartService().addPartListener(
                new IPartListener2() {
                    public void partActivated(IWorkbenchPartReference ref) {
                        if (ref instanceof IEditorReference
                                || ref.getPage().getActiveEditor() == null) {
                            updateTitle();
                        }
                    }
                    public void partBroughtToTop(IWorkbenchPartReference ref) {
                        if (ref instanceof IEditorReference
                                || ref.getPage().getActiveEditor() == null) {
                            updateTitle();
                        }
                    }
                    public void partClosed(IWorkbenchPartReference ref) {
                        
                    }
                    public void partDeactivated(IWorkbenchPartReference ref) {
                        
                    }
                    public void partOpened(IWorkbenchPartReference ref) {