Bug 219901 [Undo] new file creation subjec to Undo (file deleted without warning)
when creating a new file by right clicking on your project in the project explorer new->file this action is put on the undo/redo stack. Pressing Ctrl-Z to undo this action will thus delete your file. As this stack is separate from the stack in the editor , one can create a new file, work for a long time, then inadvertently press ctrl-z to undo a code change while having the focus on the project explorer and irrevocably lose their file. Redo will create a new EMPTY file; the work is gone, forever. This appears to only work for the "new file", not for "new->source file" etc. Although some may perceive this as a feature, it is hard to imagine a scenario where ctrl-z should permanently delete a file without warning.
bundles/org.eclipse.ui.ide/src/org/eclipse/ui/wizards/newresource/BasicNewProjectResourceWizard.java
return false;
		}
		
		IWorkingSet[] workingSets = mainPage.getSelectedWorkingSets();
		getWorkbench().getWorkingSetManager().addToWorkingSets(newProject,
				workingSets);
        
		updatePerspective();
		selectAndReveal(newProject);
		return true;
	}
	/*
	 * (non-Javadoc) Replaces the current perspective with the new one.
	 */
	private static void replaceCurrentPerspective(IPerspectiveDescriptor persp) {
		
		IWorkbenchWindow window = PlatformUI.getWorkbench()
				.getActiveWorkbenchWindow();
		if (window == null) {
			return;
		}
		IWorkbenchPage page = window.getActivePage();
		if (page == null) {
			return;
		}
		
		page.setPerspective(persp);
	}
	/**
	 * Stores the configuration element for the wizard. The config element will