250 lines
8.6 KiB
Swift
250 lines
8.6 KiB
Swift
//
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// PreferencesDialog.swift
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// Adwaita
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//
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// Created by david-swift on 04.11.24.
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//
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import CAdw
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/// The preferences dialog widget.
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public struct PreferencesDialog: AdwaitaWidget {
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/// Whether the dialog is visible.
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@Binding var visible: Bool
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/// An identifier used if multiple dialogs are on one view.
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var id: String
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/// The settings dialog pages.
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var pages: [PreferencesPage] = []
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/// The content.
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var child: AnyView
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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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/// Initialize a dialog wrapper.
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/// - Parameters:
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/// - visible: Whether the dialog is visible.
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/// - child: The wrapped view.
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/// - id: An unique identifier for dialogs on the view.
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public init(
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visible: Binding<Bool>,
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child: AnyView,
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id: String
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) {
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self._visible = visible
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self.child = child
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self.id = id
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}
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/// A preferences page.
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public struct PreferencesPage {
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/// The page's title.
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var title: String
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/// The page's icon.
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var icon: Icon
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/// The page content.
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var content: [PreferencesGroup] = []
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/// Initialize the preferences page.
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/// - Parameters:
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/// - title: The page title.
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/// - icon: The page's icon.
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public init(_ title: String, icon: Icon) {
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self.title = title
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self.icon = icon
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}
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/// Get the GTK preferences page as well as the group's view storages.
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/// - Parameter data: The widget data.
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/// - Returns: The preferences page pointer and the groups view storages.
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func gtkPreferencesPage(data: WidgetData) -> (OpaquePointer?, [ViewStorage]) {
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let page = Core.PreferencesPage()
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.title(title)
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.iconName(icon.string)
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.storage(data: data.noModifiers, type: AdwaitaMainView.self)
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let groups = content.map { $0.gtkPreferencesGroup(data: data) }
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for group in groups {
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adw_preferences_page_add(page.opaquePointer?.cast(), group.opaquePointer?.cast())
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}
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return (page.opaquePointer, groups)
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}
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/// Update the page.
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/// - Parameters:
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/// - groups: The groups' view storages.
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/// - data: The widget data.
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/// - updateProperties: Whether to update the properties.
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func update(groups: [ViewStorage], data: WidgetData, updateProperties: Bool) {
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for (index, storage) in groups.enumerated() {
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content[safe: index]?.update(group: storage, data: data, updateProperties: updateProperties)
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}
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}
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/// Add a preferences group.
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/// - Parameters:
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/// - title: The group's title.
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/// - description: The group's description.
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/// - child: The view child.
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public func group(
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_ title: String,
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description: String = "",
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@ViewBuilder child: () -> Body
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) -> Self {
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var newSelf = self
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newSelf.content.append(
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.init(
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title: title,
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description: description,
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child: child()
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)
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)
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return newSelf
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}
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}
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/// The preferences group.
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struct PreferencesGroup {
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/// The group's title.
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var title: String
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/// The group's description.
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var description: String
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/// The group's child view.
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var child: Body
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/// Get the GTk preferences group.
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/// - Parameter data: The widget data.
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/// - Returns: The preferences group.
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func group(data: WidgetData) -> Core.PreferencesGroup {
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.init()
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.title(title)
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.description(description)
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.child { child }
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}
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/// Get the GTK preferences group's storage.
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/// - Parameter data: The widget data.
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/// - Returns: The view storage.
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func gtkPreferencesGroup(data: WidgetData) -> ViewStorage {
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group(data: data).container(data: data.noModifiers, type: AdwaitaMainView.self)
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}
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/// Update the preferences group.
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/// - Parameters:
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/// - group: The view storage.
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/// - data: The widget data.
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/// - updateProperties: Whether to update the properties.
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func update(group: ViewStorage, data: WidgetData, updateProperties: Bool) {
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self.group(data: data)
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.update(group, data: data, updateProperties: updateProperties, type: AdwaitaMainView.self)
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}
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}
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/// The view storage.
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/// - Parameters:
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/// - modifiers: Modify views before being updated.
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/// - type: The view render data type.
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/// - Returns: The view storage.
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public func container<Data>(data: WidgetData, type: Data.Type) -> ViewStorage where Data: ViewRenderData {
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let child = child.storage(data: data, type: type)
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let storage = ViewStorage(child.opaquePointer, content: [.mainContent: [child]])
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update(storage, data: data, updateProperties: true, type: type)
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return storage
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}
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/// Update the stored content.
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/// - Parameters:
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/// - storage: The storage to update.
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/// - modifiers: Modify views before being updated
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/// - updateProperties: Whether to update the view's properties.
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/// - type: The view render data type.
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public func update<Data>(
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_ storage: ViewStorage,
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data: WidgetData,
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updateProperties: Bool,
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type: Data.Type
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) where Data: ViewRenderData {
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if let storage = storage.content[.mainContent]?.first {
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child.updateStorage(storage, data: data, updateProperties: updateProperties, type: type)
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}
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defer {
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for (index, page) in pages.enumerated() {
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if let preferences = storage.content["preferences-\(index)"] {
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page.update(groups: preferences, data: data, updateProperties: updateProperties)
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}
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}
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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 + id]?.first == nil {
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createDialog(storage: storage, data: data, type: type)
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adw_dialog_present(
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storage.content[dialogID + id]?.first?.opaquePointer?.cast(),
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storage.opaquePointer?.cast()
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)
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}
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} else {
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if storage.content[dialogID + id]?.first != nil {
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let dialog = storage.content[dialogID + id]?.first?.opaquePointer
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adw_dialog_close(dialog?.cast())
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g_object_unref(dialog?.cast())
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for index in pages.indices {
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let container = storage.content["preferences-\(index)"]?.map { $0.opaquePointer }
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container?.forEach { g_object_unref($0?.cast()) }
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g_object_unref((storage.fields["preferences-\(index)"] as? OpaquePointer)?.cast())
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}
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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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/// - type: The view render data type.
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func createDialog<Data>(
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storage: ViewStorage,
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data: WidgetData,
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type: Data.Type
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) where Data: ViewRenderData {
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let pointer = adw_preferences_dialog_new()
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adw_preferences_dialog_set_search_enabled(pointer?.cast(), 1)
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let dialog = ViewStorage(pointer?.opaque())
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storage.content[dialogID + id] = [dialog]
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dialog.connectSignal(name: "closed") {
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storage.content[dialogID + id] = []
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storage.content[contentID + id] = []
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if visible {
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visible = false
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}
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}
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for (index, page) in pages.map({ $0.gtkPreferencesPage(data: data) }).enumerated() {
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storage.content["preferences-\(index)"] = page.1
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storage.fields["preferences-\(index)"] = page.0
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adw_preferences_dialog_add(pointer?.cast(), page.0?.cast())
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}
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}
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/// Add a preferences page.
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/// - Parameters:
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/// - title: The page title.
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/// - icon: The page icon.
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/// - content: Modify the preferences pages.
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public func preferencesPage(
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_ title: String,
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icon: Icon,
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content: (PreferencesPage) -> PreferencesPage
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) -> Self {
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modify { $0.pages.append(content(.init(title, icon: icon))) }
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}
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}
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