Bug 85452 [IDE] (regression) Backdrop missing when all perspectives closed
I20050215-2300 - close all perspectives - the main page is blank - it should have a backdrop with text and button explaining how to open a perspective
bundles/org.eclipse.ui.ide/src/org/eclipse/ui/internal/ide/IDEWorkbenchWindowAdvisor.java
}
        }
        if (win == null) {
            win = getWorkbench().getWorkbenchWindows()[0];
        }
        IWorkbenchPage page = win.getActivePage();
        String id = perspectiveId;
        if (id == null) {
            id = getWorkbench().getPerspectiveRegistry()
                    .getDefaultPerspective();
        }
        if (page == null) {
            try {
                page = win.openPage(id, wbAdvisor.getDefaultPageInput());
            } catch (WorkbenchException e) {
                ErrorDialog.openError(win.getShell(), IDEWorkbenchMessages
                        .getString("Problems_Opening_Page"), 
                        e.getMessage(), e.getStatus());
            }
        }
        if (page == null)
            return;
        if (page.getPerspective() == null) {
            try {
                page = getWorkbench().showPerspective(id, win);
            } catch (WorkbenchException e) {
                ErrorDialog
                        .openError(
                                win.getShell(),
                                IDEWorkbenchMessages