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XCode 4, though it happened even before 10.7

• dchest 15y ago
  Xcode had [mostly] single window mode since 2.0 or so. It wasn't default, though, and Interface Builder was a separate application.
  • dchest 15y ago
    For downvoters: Xcode 3 > Preferences > General. Layout: All-In-One "This layout provides virtually all operations within a single window, such as editing files and project content, filtering in the detail view, viewing the build results and build log, and debugging". http://i.imgur.com/uW3SI.png http://i.imgur.com/uW3SI.png
  • bonch 15y ago
    It wasn't a true single window mode; there were still secondary windows, and Interface Builder was not integrated.