255 lines
8.6 KiB
Swift

//
// Window.swift
// Adwaita
//
// Created by david-swift on 14.09.23.
//
// swiftlint:disable discouraged_optional_collection
import Foundation
import Libadwaita
/// A structure representing an application window type.
///
/// Note that multiple instances of a window can be opened at the same time.
public struct Window: WindowScene {
/// The window's identifier.
public var id: String
/// The window's content.
var content: (GTUIApplicationWindow) -> Body
/// Whether an instance of the window type should be opened when the app is starting up.
public var `open`: Int
/// The identifier of the window's parent.
public var parentID: String?
/// The keyboard shortcuts.
var shortcuts: [String: (GTUIApplicationWindow) -> Void] = [:]
/// The keyboard shortcuts on the app level.
public var appShortcuts: [String: (GTUIApp) -> Void] = [:]
/// The default window size.
var defaultSize: (Int, Int)?
/// The window's title.
var title: String?
/// Whether the window is resizable.
var resizable = true
/// Whether the window is deletable.
var deletable = true
/// The signals for the importers and exporters.
var signals: [Signal] = []
/// Create a window type with a certain identifier and user interface.
/// - Parameters:
/// - id: The identifier.
/// - open: The number of instances of the window type when the app is starting.
/// - content: The window's content.
public init(id: String, `open`: Int = 1, @ViewBuilder content: @escaping (GTUIApplicationWindow) -> Body) {
self.content = content
self.id = id
self.open = open
}
/// Get the storage for the window.
/// - Parameter app: The application.
/// - Returns: The storage.
public func createWindow(app: GTUIApp) -> WindowStorage {
let window = createGTUIWindow(app: app)
let storage = getViewStorage(window: window)
let windowStorage = WindowStorage(id: id, window: window, view: storage)
window.observeHide {
windowStorage.destroy = true
return false
}
windowStorage.parentID = parentID
return windowStorage
}
/// Get the window.
/// - Parameter app: The application.
/// - Returns: The window.
func createGTUIWindow(app: GTUIApp) -> GTUIApplicationWindow {
let window = GTUIApplicationWindow(app: app)
updateAppShortcuts(app: app)
window.show()
return window
}
/// Get the storage of the content view.
/// - Parameter window: The window.
/// - Returns: The storage of the content of the window.
func getViewStorage(window: GTUIApplicationWindow) -> ViewStorage {
let content = content(window)
let storage = content.widget(modifiers: []).container(modifiers: [])
window.setChild(storage.view)
window.setDefaultSize(width: defaultSize?.0, height: defaultSize?.1)
setProperties(window: window)
updateShortcuts(window: window)
return storage
}
/// Update a window storage's content.
/// - Parameter storage: The storage to update.
public func update(_ storage: WindowStorage, app: GTUIApp) {
if let window = storage.window as? GTUIApplicationWindow {
let content = content(window)
if let view = storage.view {
content.widget(modifiers: []).updateStorage(view, modifiers: [])
}
setProperties(window: window)
updateShortcuts(window: window)
updateAppShortcuts(app: app)
}
for signal in signals where signal.update {
Task {
app.showWindow(signal.id.uuidString)
}
}
}
/// Set some general propreties of the window.
/// - Parameter window: The window.
func setProperties(window: GTUIApplicationWindow) {
if let title {
window.setTitle(title)
}
window.setResizability(resizable)
window.setDeletability(deletable)
}
/// Add windows that overlay the last instance of this window if presented.
/// - Parameter windows: The windows.
/// - Returns: The new windows and this window.
public func overlay(@SceneBuilder windows: () -> [WindowSceneGroup]) -> [WindowScene] {
windows().windows().map { window in
var newWindow = window
newWindow.parentID = id
return newWindow
} + [self]
}
/// Add an importer file dialog to the window.
/// - Parameters:
/// - signal: The signal for opening the dialog.
/// - initialFolder: The URL to the folder open when being opened.
/// - extensions: The accepted file extensions.
/// - folders: Whether folders are accepted.
/// - onOpen: Run this when a file for importing has been chosen.
/// - onClose: Run this when the user cancelled the action.
public func fileImporter(
_ signal: Signal,
initialFolder: URL? = nil,
extensions: [String]? = nil,
folders: Bool = false,
onOpen: @escaping (URL) -> Void,
onClose: @escaping () -> Void
) -> Scene {
var newSelf = self
newSelf.signals.append(signal)
return newSelf
.overlay {
FileDialog(
importer: signal.id.uuidString,
initialFolder: initialFolder,
extensions: extensions,
folders: folders,
onOpen: onOpen,
onClose: onClose
)
}
}
/// Add an exporter file dialog to the window.
/// - Parameters:
/// - signal: The signal for opening the dialog.
/// - initialFolder: The URL to the folder open when being opened.
/// - initialName: The default file name.
/// - onSave: Run this when a path for exporting has been chosen.
/// - onClose: Run this when the user cancelled the action.
public func fileExporter(
_ signal: Signal,
initialFolder: URL? = nil,
initialName: String? = nil,
onSave: @escaping (URL) -> Void,
onClose: @escaping () -> Void
) -> Scene {
var newSelf = self
newSelf.signals.append(signal)
return newSelf
.overlay {
FileDialog(
exporter: signal.id.uuidString,
initialFolder: initialFolder,
initialName: initialName,
onSave: onSave,
onClose: onClose
)
}
}
/// Add a keyboard shortcut.
/// - Parameters:
/// - shortcut: The keyboard shortcut.
/// - action: The closure to execute when the keyboard shortcut is pressed.
/// - Returns: The window.
public func keyboardShortcut(_ shortcut: String, action: @escaping (GTUIApplicationWindow) -> Void) -> Self {
var newSelf = self
newSelf.shortcuts[shortcut] = action
return newSelf
}
/// Update the keyboard shortcuts.
/// - Parameter window: The application window.
func updateShortcuts(window: GTUIApplicationWindow) {
for shortcut in shortcuts {
window.addKeyboardShortcut(shortcut.key, id: shortcut.key) { shortcut.value(window) }
}
}
/// Add the shortcut "<Ctrl>w" which closes the window.
/// - Returns: The window.
public func closeShortcut() -> Self {
keyboardShortcut("w".ctrl()) { $0.close() }
}
/// Set the window's default size.
/// - Parameters:
/// - width: The window's width.
/// - height: The window's height.
/// - Returns: The window.
public func defaultSize(width: Int, height: Int) -> Self {
var newSelf = self
newSelf.defaultSize = (width, height)
return newSelf
}
/// Set the window's title.
/// - Parameter title: The title.
/// - Returns: The window.
public func title(_ title: String) -> Self {
var newSelf = self
newSelf.title = title
return newSelf
}
/// Set whether the window is resizable.
/// - Parameter resizable: The resizability.
/// - Returns: The window.
public func resizable(_ resizable: Bool) -> Self {
var newSelf = self
newSelf.resizable = resizable
return newSelf
}
/// Set whether the window is deletable.
/// - Parameter resizable: The deletability.
/// - Returns: The window.
public func deletable(_ deletable: Bool) -> Self {
var newSelf = self
newSelf.deletable = deletable
return newSelf
}
}
// swiftlint:enable discouraged_optional_collection