Add support for AdwViewSwitcher

Documentation/Reference/README.md

@@ -59,6 +59,7 @@
 -   [ToastOverlay](classes/ToastOverlay.md)
 -   [ToggleButton](classes/ToggleButton.md)
 -   [ToolbarView](classes/ToolbarView.md)
+-   [ViewSwitcher](classes/ViewSwitcher.md)
 -   [Window](classes/Window.md)
 
 ## Enums
@@ -99,6 +100,7 @@
 -   [tabbutton_on_click_cb(ptr_userData_)](methods/tabbutton_on_click_cb(ptr_userData_).md)
 -   [taboverview_on_create_tab_cb(ptr_userData_)](methods/taboverview_on_create_tab_cb(ptr_userData_).md)
 -   [toast_on_click_cb(ptr_userData_)](methods/toast_on_click_cb(ptr_userData_).md)
+-   [viewswitcher_on_select_cb(ptr_parameter_userData_)](methods/viewswitcher_on_select_cb(ptr_parameter_userData_).md)
 -   [window_close_cb(ptr_userData_)](methods/window_close_cb(ptr_userData_).md)
 
 This file was generated by [SourceDocs](https://github.com/eneko/SourceDocs)

Documentation/Reference/classes/ViewSwitcher.md

@@ -0,0 +1,51 @@
+**CLASS**
+
+# `ViewSwitcher`
+
+Adw.ViewSwitcher
+
+## Properties
+### `onSelect`
+
+The closure that is executed when the selection changes.
+
+## Methods
+### `init()`
+
+Initialize a view switcher.
+
+### `addOption(title:icon:)`
+
+Add a view.
+- Parameters:
+    - title: The view's title and identifier.
+    - icon: The view's icon.
+- Returns: The view switcher.
+
+### `removeOption(title:)`
+
+Remove a view.
+- Parameter title: The view's title.
+- Returns: The view switcher.
+
+### `getSelection()`
+
+Get the selected view's title.
+- Returns: The title.
+
+### `select(title:)`
+
+Select the view with a specific title.
+- Parameter title: The title.
+
+### `onSelect(closure:)`
+
+Set the closure that gets called when the selection changes.
+- Parameter closure: The closure.
+- Returns: The view switcher.
+
+### `wideDesign(_:)`
+
+Set the wide or narrow design.
+- Parameter wide: Whether the design is wide.
+- Returns: The view switcher.

Documentation/Reference/methods/viewswitcher_on_select_cb(ptr_parameter_userData_).md

@@ -0,0 +1,7 @@
+### `viewswitcher_on_select_cb(ptr:parameter:userData:)`
+
+Run when the seleciton changes.
+- Parameters:
+  - ptr: The pointer.
+  - parameter: Additional data.
+  - userData: The switcher data.

Sources/CGTUI/shim.h

@@ -35,6 +35,8 @@ static void
 tabbutton_on_click_cb (void *, void *);
 static void
 toast_on_click_cb (void *, void *);
+static void
+viewswitcher_on_select_cb (void *, void *, void *);
 static gboolean
 window_close_cb (void *, void *);
 static void
@@ -1356,6 +1358,92 @@ gtui_editable_set_contents (uint64_t editable, const char *contents)
   return gtk_editable_set_text (editable, contents);
 }
 
+static uint64_t
+gtui_create_viewswitcher ()
+{
+  AdwViewSwitcher *switcher = adw_view_switcher_new ();
+  adw_view_switcher_set_stack (switcher, adw_view_stack_new ());
+  return (uint64_t)switcher;
+}
+
+static void
+gtui_viewswitcher_init_signals (uint64_t swtchr, uint64_t data)
+{
+  AdwViewSwitcher *switcher;
+
+  g_assert_nonnull (swtchr);
+  g_assert_nonnull (data);
+  g_assert (ADW_IS_VIEW_SWITCHER (ADW_VIEW_SWITCHER ((void *)swtchr)));
+
+  switcher = ADW_VIEW_SWITCHER (swtchr);
+  AdwViewStack *stack = adw_view_switcher_get_stack (switcher);
+  swift_retain (data);
+  g_signal_connect (stack, "notify::visible-child", G_CALLBACK (viewswitcher_on_select_cb), (void *)data);
+}
+
+static void
+gtui_viewswitcher_add_view (uint64_t switcher, uint64_t child, const char *title, const char *icon)
+{
+  g_assert_nonnull (switcher);
+  g_assert_nonnull (child);
+  g_assert_nonnull (title);
+  g_assert_nonnull (icon);
+  g_assert (ADW_IS_VIEW_SWITCHER (ADW_VIEW_SWITCHER ((void *)switcher)));
+  g_assert (GTK_IS_WIDGET (GTK_WIDGET ((void *)child)));
+
+  AdwViewStack *stack = adw_view_switcher_get_stack (switcher);
+  adw_view_stack_add_titled_with_icon (stack, child, title, title, icon);
+}
+
+static void
+gtui_viewswitcher_remove_view (uint64_t switcher, const char *title)
+{
+  g_assert_nonnull (switcher);
+  g_assert_nonnull (title);
+  g_assert (ADW_IS_VIEW_SWITCHER (ADW_VIEW_SWITCHER ((void *)switcher)));
+
+  AdwViewStack *stack = adw_view_switcher_get_stack (switcher);
+  GtkWidget    *widget = adw_view_stack_get_child_by_name (stack, title);
+  adw_view_stack_remove (stack, widget);
+}
+
+static void
+gtui_viewswitcher_set_wide_design (uint64_t switcher, gboolean wide)
+{
+  g_assert_nonnull (switcher);
+  g_assert (ADW_IS_VIEW_SWITCHER (ADW_VIEW_SWITCHER ((void *)switcher)));
+
+  if (wide)
+    {
+      adw_view_switcher_set_policy (switcher, ADW_VIEW_SWITCHER_POLICY_WIDE);
+    }
+  else
+    {
+      adw_view_switcher_set_policy (switcher, ADW_VIEW_SWITCHER_POLICY_NARROW);
+    }
+}
+
+static const char *
+gtui_viewswitcher_get_selection (uint64_t switcher)
+{
+  g_assert_nonnull (switcher);
+  g_assert (ADW_IS_VIEW_SWITCHER (ADW_VIEW_SWITCHER ((void *)switcher)));
+
+  AdwViewStack *stack = adw_view_switcher_get_stack (switcher);
+  return adw_view_stack_get_visible_child_name (stack);
+}
+
+static void
+gtui_viewswitcher_select (uint64_t switcher, const char *title)
+{
+  g_assert_nonnull (switcher);
+  g_assert_nonnull (title);
+  g_assert (ADW_IS_VIEW_SWITCHER (ADW_VIEW_SWITCHER ((void *)switcher)));
+
+  AdwViewStack *stack = adw_view_switcher_get_stack (switcher);
+  adw_view_stack_set_visible_child_name (stack, title);
+}
+
 static uint64_t
 gtui_create_aboutwindow ()
 {

Sources/Libadwaita/Adwaita/ViewSwitcher.swift

@@ -0,0 +1,85 @@
+//
+//  ViewSwitcher.swift
+//  Libadwaita
+//
+//  Created by david-swift on 25.12.23.
+//
+
+import CGTUI
+
+/// Adw.ViewSwitcher
+public class ViewSwitcher: NativeWidgetPeer {
+
+    /// The closure that is executed when the selection changes.
+    var onSelect: () -> Void = { }
+
+    /// Initialize a view switcher.
+    override public init() {
+        super.init()
+        self.nativePtr = gtui_create_viewswitcher()
+        let selfAddr = unsafeBitCast(self, to: UInt64.self)
+        gtui_viewswitcher_init_signals(self.nativePtr, selfAddr)
+    }
+
+    /// Add a view.
+    /// - Parameters:
+    ///     - title: The view's title and identifier.
+    ///     - icon: The view's icon.
+    /// - Returns: The view switcher.
+    public func addOption(title: String, icon: Icon) -> ViewSwitcher {
+        gtui_viewswitcher_add_view(self.nativePtr, Label("").nativePtr, title.cString, icon.string.cString)
+        return self
+    }
+
+    /// Remove a view.
+    /// - Parameter title: The view's title.
+    /// - Returns: The view switcher.
+    public func removeOption(title: String) -> ViewSwitcher {
+        gtui_viewswitcher_remove_view(self.nativePtr, title.cString)
+        return self
+    }
+
+    /// Get the selected view's title.
+    /// - Returns: The title.
+    public func getSelection() -> String {
+        .init(cString: gtui_viewswitcher_get_selection(self.nativePtr))
+    }
+
+    /// Select the view with a specific title.
+    /// - Parameter title: The title.
+    public func select(title: String) {
+        gtui_viewswitcher_select(self.nativePtr, title.cString)
+    }
+
+    /// Set the closure that gets called when the selection changes.
+    /// - Parameter closure: The closure.
+    /// - Returns: The view switcher.
+    public func onSelect(closure: @escaping () -> Void) -> ViewSwitcher {
+        self.onSelect = closure
+        return self
+    }
+
+    /// Set the wide or narrow design.
+    /// - Parameter wide: Whether the design is wide.
+    /// - Returns: The view switcher.
+    public func wideDesign(_ wide: Bool = true) -> ViewSwitcher {
+        gtui_viewswitcher_set_wide_design(self.nativePtr, wide.cBool)
+        return self
+    }
+
+}
+
+/// Run when the seleciton changes.
+/// - Parameters:
+///   - ptr: The pointer.
+///   - parameter: Additional data.
+///   - userData: The switcher data.
+@_cdecl("viewswitcher_on_select_cb")
+func viewswitcher_on_select_cb(
+    ptr: UnsafeMutableRawPointer,
+    parameter: UnsafeMutableRawPointer,
+    userData: UnsafeMutableRawPointer
+) {
+    let switcher = Unmanaged<ViewSwitcher>.fromOpaque(userData).takeUnretainedValue()
+    switcher.onSelect()
+}

Tests/main.swift

@@ -154,12 +154,21 @@ public class MyApplication: Application {
         }
         let contentView = TabOverview().createTabHandler { createTab() }
         let box = Box(horizontal: false)
+        let switcher = ViewSwitcher()
         _ = contentView.add(
             ToolbarView(box.append(tabView.append(title: "Initial View", self.toastOverlay(win: win))))
                 .addTopBar(
                     HeaderBar()
                         .packStart(helloButton())
-                        .titleWidget(TitleBarWidget("Title", "Subtitle"))
+                        .titleWidget(
+                            switcher
+                                .addOption(title: "Test", icon: .default(icon: .actionUnavailable))
+                                .addOption(title: "Case", icon: .default(icon: .addressBookNew))
+                                .wideDesign()
+                                .onSelect {
+                                    print(switcher.getSelection())
+                                }
+                        )
                         .packEnd(Button(icon: .default(icon: .tabNew)).handler { _ = createTab() })
                         .packEnd(TabButton(view: tabView).handler { contentView.showOverview() })
                 )