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/extensions/org/eclipse/ui/dialogs/WizardNewFolderMainPage.java
getContainer().run(true, true, op);
		} catch (InterruptedException e) {
			return null;
		} catch (InvocationTargetException e) {
			
			
			IDEWorkbenchPlugin.log(getClass(),
					"createNewFolder()", e.getTargetException()); 
			MessageDialog
					.openError(
							getContainer().getShell(),
							IDEWorkbenchMessages.WizardNewFolderCreationPage_internalErrorTitle,
							NLS
									.bind(
											IDEWorkbenchMessages.WizardNewFolder_internalError,
											e.getTargetException().getMessage()));
			return null;
		}
		newFolder = newFolderHandle;
		return newFolder;
	}
	/**
	 * Shows/hides the advanced option widgets.
	 */
	protected void handleAdvancedButtonSelect() {
		Shell shell = getShell();
		Point shellSize = shell.getSize();
		Composite composite = (Composite) getControl();
		if (linkedResourceComposite != null) {
			linkedResourceComposite.dispose();