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| 1 | +// |
| 2 | +// ScreenSelector.swift |
| 3 | +// ClaudeIsland |
| 4 | +// |
| 5 | +// Manages screen selection state and persistence |
| 6 | +// |
| 7 | + |
| 8 | +import AppKit |
| 9 | +import Combine |
| 10 | +import Foundation |
| 11 | + |
| 12 | +/// Strategy for selecting which screen to use |
| 13 | +enum ScreenSelectionMode: String, Codable { |
| 14 | + case automatic // Prefer built-in display, fall back to main |
| 15 | + case specificScreen // User selected a specific screen |
| 16 | +} |
| 17 | + |
| 18 | +/// Persistent identifier for a screen |
| 19 | +struct ScreenIdentifier: Codable, Equatable, Hashable { |
| 20 | + let displayID: CGDirectDisplayID? |
| 21 | + let localizedName: String |
| 22 | + |
| 23 | + /// Create identifier from NSScreen |
| 24 | + init(screen: NSScreen) { |
| 25 | + if let screenNumber = screen.deviceDescription[NSDeviceDescriptionKey("NSScreenNumber")] as? CGDirectDisplayID { |
| 26 | + self.displayID = screenNumber |
| 27 | + } else { |
| 28 | + self.displayID = nil |
| 29 | + } |
| 30 | + self.localizedName = screen.localizedName |
| 31 | + } |
| 32 | + |
| 33 | + /// Check if this identifier matches a given screen |
| 34 | + func matches(_ screen: NSScreen) -> Bool { |
| 35 | + guard let screenNumber = screen.deviceDescription[NSDeviceDescriptionKey("NSScreenNumber")] as? CGDirectDisplayID else { |
| 36 | + return localizedName == screen.localizedName |
| 37 | + } |
| 38 | + // Primary match: displayID (most reliable when connected) |
| 39 | + if let savedID = displayID, savedID == screenNumber { |
| 40 | + return true |
| 41 | + } |
| 42 | + // Fallback: name match (for reconnected displays with new IDs) |
| 43 | + return localizedName == screen.localizedName |
| 44 | + } |
| 45 | +} |
| 46 | + |
| 47 | +@MainActor |
| 48 | +class ScreenSelector: ObservableObject { |
| 49 | + static let shared = ScreenSelector() |
| 50 | + |
| 51 | + // MARK: - Published State |
| 52 | + @Published private(set) var availableScreens: [NSScreen] = [] |
| 53 | + @Published private(set) var selectedScreen: NSScreen? |
| 54 | + @Published var selectionMode: ScreenSelectionMode = .automatic |
| 55 | + @Published var isPickerExpanded: Bool = false |
| 56 | + |
| 57 | + // MARK: - UserDefaults Keys |
| 58 | + private let modeKey = "screenSelectionMode" |
| 59 | + private let screenIdentifierKey = "selectedScreenIdentifier" |
| 60 | + |
| 61 | + // MARK: - Private State |
| 62 | + private var savedIdentifier: ScreenIdentifier? |
| 63 | + |
| 64 | + private init() { |
| 65 | + loadPreferences() |
| 66 | + refreshScreens() |
| 67 | + } |
| 68 | + |
| 69 | + // MARK: - Public API |
| 70 | + |
| 71 | + /// Refresh the available screens list |
| 72 | + func refreshScreens() { |
| 73 | + availableScreens = NSScreen.screens |
| 74 | + selectedScreen = resolveSelectedScreen() |
| 75 | + } |
| 76 | + |
| 77 | + /// Select a specific screen |
| 78 | + func selectScreen(_ screen: NSScreen) { |
| 79 | + selectionMode = .specificScreen |
| 80 | + savedIdentifier = ScreenIdentifier(screen: screen) |
| 81 | + selectedScreen = screen |
| 82 | + savePreferences() |
| 83 | + } |
| 84 | + |
| 85 | + /// Reset to automatic selection |
| 86 | + func selectAutomatic() { |
| 87 | + selectionMode = .automatic |
| 88 | + savedIdentifier = nil |
| 89 | + selectedScreen = resolveSelectedScreen() |
| 90 | + savePreferences() |
| 91 | + } |
| 92 | + |
| 93 | + /// Check if a screen is currently selected |
| 94 | + func isSelected(_ screen: NSScreen) -> Bool { |
| 95 | + guard let selected = selectedScreen else { return false } |
| 96 | + return screenID(of: screen) == screenID(of: selected) |
| 97 | + } |
| 98 | + |
| 99 | + /// Extra height needed when picker is expanded |
| 100 | + var expandedPickerHeight: CGFloat { |
| 101 | + guard isPickerExpanded else { return 0 } |
| 102 | + // +1 for "Automatic" option |
| 103 | + return CGFloat(availableScreens.count + 1) * 40 |
| 104 | + } |
| 105 | + |
| 106 | + // MARK: - Private Methods |
| 107 | + |
| 108 | + private func screenID(of screen: NSScreen) -> CGDirectDisplayID? { |
| 109 | + screen.deviceDescription[NSDeviceDescriptionKey("NSScreenNumber")] as? CGDirectDisplayID |
| 110 | + } |
| 111 | + |
| 112 | + private func resolveSelectedScreen() -> NSScreen? { |
| 113 | + switch selectionMode { |
| 114 | + case .automatic: |
| 115 | + return NSScreen.builtin ?? NSScreen.main |
| 116 | + |
| 117 | + case .specificScreen: |
| 118 | + // Try to find the saved screen |
| 119 | + if let identifier = savedIdentifier, |
| 120 | + let match = availableScreens.first(where: { identifier.matches($0) }) { |
| 121 | + return match |
| 122 | + } |
| 123 | + // Saved screen not found - fall back to automatic |
| 124 | + return NSScreen.builtin ?? NSScreen.main |
| 125 | + } |
| 126 | + } |
| 127 | + |
| 128 | + private func loadPreferences() { |
| 129 | + if let modeString = UserDefaults.standard.string(forKey: modeKey), |
| 130 | + let mode = ScreenSelectionMode(rawValue: modeString) { |
| 131 | + selectionMode = mode |
| 132 | + } |
| 133 | + |
| 134 | + if let data = UserDefaults.standard.data(forKey: screenIdentifierKey), |
| 135 | + let identifier = try? JSONDecoder().decode(ScreenIdentifier.self, from: data) { |
| 136 | + savedIdentifier = identifier |
| 137 | + } |
| 138 | + } |
| 139 | + |
| 140 | + private func savePreferences() { |
| 141 | + UserDefaults.standard.set(selectionMode.rawValue, forKey: modeKey) |
| 142 | + |
| 143 | + if let identifier = savedIdentifier, |
| 144 | + let data = try? JSONEncoder().encode(identifier) { |
| 145 | + UserDefaults.standard.set(data, forKey: screenIdentifierKey) |
| 146 | + } else { |
| 147 | + UserDefaults.standard.removeObject(forKey: screenIdentifierKey) |
| 148 | + } |
| 149 | + } |
| 150 | +} |
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