// // SidebarToggleToolbar.swift // USB Meter // import SwiftUI extension View { /// Adds a sidebar toggle button to the leading toolbar on Mac Catalyst. /// No-op on other platforms. Apply to any top-level detail view reachable /// from the sidebar so users can restore the sidebar if it was hidden. func sidebarToggleToolbarItem() -> some View { #if targetEnvironment(macCatalyst) return self.toolbar { ToolbarItem(placement: .navigationBarLeading) { Button { UIApplication.shared.sendAction( Selector(("toggleSidebar:")), to: nil, from: nil, for: nil ) } label: { Image(systemName: "sidebar.left") } .help("Show Sidebar") } } #else return self #endif } }