Layout of the app picker. Each entry in the array is a page. Pages are stored in the order they appear in GNOME Shell. Each page contains an “application id” → 'data' pair. Currently, the following values are stored as 'data': • “position”: the position of the application icon in the page
Configures how the windows are shown in the switcher. Valid possibilities are “thumbnail-only” (shows a thumbnail of the window), “app-icon-only” (shows only the application icon) or “both”.