98 lines
3.4 KiB
Swift
98 lines
3.4 KiB
Swift
//
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// Dialog.swift
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// Adwaita
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//
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// Created by david-swift on 20.03.24.
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//
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import CAdw
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/// The dialog widget.
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struct Dialog: Widget {
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/// Whether the dialog is visible.
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@Binding var visible: Bool
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/// The dialog's title.
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var title: String?
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/// The wrapped view.
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var child: View
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/// The content of the dialog.
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var content: Body
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/// The ID for the dialog's storage.
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let dialogID = "dialog"
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/// The ID for the content's storage.
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let contentID = "content"
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/// Get the container of the child.
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/// - Parameter modifiers: Modify views before being updated.
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/// - Returns: The view storage.
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func container(modifiers: [(View) -> View]) -> ViewStorage {
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let storage = child.storage(modifiers: modifiers)
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update(storage, modifiers: modifiers, updateProperties: true)
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return storage
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}
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/// Update the view storage of the child, dialog, and dialog content.
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/// - Parameters:
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/// - storage: The view storage.
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/// - modifiers: Modify views before being updated.
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/// - updateProperties: Whether to update properties.
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func update(_ storage: ViewStorage, modifiers: [(View) -> View], updateProperties: Bool) {
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child.widget(modifiers: modifiers).update(storage, modifiers: modifiers, updateProperties: updateProperties)
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if let storage = storage.content[contentID]?.first as? ViewStorage {
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content
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.widget(modifiers: modifiers)
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.update(storage, modifiers: modifiers, updateProperties: updateProperties)
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}
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guard updateProperties else {
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return
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}
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if visible {
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if storage.content[dialogID]?.first == nil {
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createDialog(storage: storage, modifiers: modifiers)
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adw_dialog_present(storage.content[dialogID]?.first?.pointer?.cast(), storage.pointer?.cast())
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}
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adw_dialog_set_title(storage.content[dialogID]?.first?.pointer?.cast(), title ?? "")
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} else {
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if storage.content[dialogID]?.first != nil {
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adw_dialog_close(storage.content[dialogID]?.first?.pointer?.cast())
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}
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}
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}
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/// Create a new instance of the dialog.
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/// - Parameters:
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/// - storage: The wrapped view's storage.
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/// - modifiers: The view modifiers.
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func createDialog(storage: ViewStorage, modifiers: [(View) -> View]) {
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let pointer = adw_dialog_new()
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let dialog = ViewStorage(pointer?.opaque())
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storage.content[dialogID] = [dialog]
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let contentStorage = content.widget(modifiers: modifiers).storage(modifiers: modifiers)
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adw_dialog_set_child(pointer, contentStorage.pointer?.cast())
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storage.content[contentID] = [contentStorage]
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dialog.connectSignal(name: "closed") {
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storage.content[dialogID] = []
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storage.content[contentID] = []
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if visible {
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visible = false
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}
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}
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}
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}
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extension View {
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/// Add a dialog to the parent window.
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/// - Parameters:
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/// - visible: Whether the dialog is presented.
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/// - title: The dialog's title.
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/// - content: The dialog's content.
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public func dialog(visible: Binding<Bool>, title: String? = nil, @ViewBuilder content: () -> Body) -> View {
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Dialog(visible: visible, title: title, child: self, content: content())
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}
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}
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