gtk: cleanup code in *Paned

src/apprt/gtk/Paned.zig

@@ -44,8 +44,8 @@ pub fn init(self: *Paned, window: *Window, label_text: *c.GtkWidget) !void {
         .window = window,
         .label_text = label_text,
         .paned = undefined,
-        .child1 = .empty,
-        .child2 = .empty,
+        .child1 = .none,
+        .child2 = .none,
         .parent = undefined,
     };
 
@@ -53,14 +53,6 @@ pub fn init(self: *Paned, window: *Window, label_text: *c.GtkWidget) !void {
     const gtk_paned: *c.GtkPaned = @ptrCast(paned);
     errdefer c.gtk_widget_destroy(paned);
     self.paned = gtk_paned;
-
-    // const surface = try self.newSurface(self.window.actionSurface());
-    // // We know that both panels are currently empty, so we maximize the 1st
-    // c.gtk_paned_set_position(self.paned, 100);
-    // const child_widget: *c.GtkWidget = @ptrCast(surface.gl_area);
-    // const child = Child{ .surface = surface };
-    // c.gtk_paned_pack1(self.paned, child_widget, 1, 1);
-    // self.child1 = child;
 }
 
 pub fn newSurface(self: *Paned, tab: *Tab, parent_: ?*CoreSurface) !*Surface {
@@ -87,7 +79,7 @@ pub fn newSurface(self: *Paned, tab: *Tab, parent_: ?*CoreSurface) !*Surface {
         .tab = tab,
         .parent = .{ .paned = .{
             self,
-            Position.end,
+            .end,
         } },
         .gl_area = @ptrCast(gl_area),
         .title_label = @ptrCast(self.label_text),
@@ -97,36 +89,28 @@ pub fn newSurface(self: *Paned, tab: *Tab, parent_: ?*CoreSurface) !*Surface {
 }
 
 pub fn removeChildren(self: *Paned) void {
+    assert(self.child1 != .none);
+    assert(self.child2 != .none);
+    self.child1 = .none;
+    self.child2 = .none;
     c.gtk_paned_set_start_child(@ptrCast(self.paned), null);
     c.gtk_paned_set_end_child(@ptrCast(self.paned), null);
 }
 
 pub fn addChild1Surface(self: *Paned, surface: *Surface) void {
-    assert(self.child1.is_empty());
+    assert(self.child1 == .none);
     self.child1 = Tab.Child{ .surface = surface };
-    surface.setParent(Parent{ .paned = .{ self, Position.start } });
+    surface.setParent(Parent{ .paned = .{ self, .start } });
     c.gtk_paned_set_start_child(@ptrCast(self.paned), @ptrCast(surface.gl_area));
 }
 
 pub fn addChild2Surface(self: *Paned, surface: *Surface) void {
-    assert(self.child2.is_empty());
+    assert(self.child2 == .none);
     self.child2 = Tab.Child{ .surface = surface };
-    surface.setParent(Parent{ .paned = .{ self, Position.end } });
+    surface.setParent(Parent{ .paned = .{ self, .end } });
     c.gtk_paned_set_end_child(@ptrCast(self.paned), @ptrCast(surface.gl_area));
 }
 
-pub fn removeChild1(self: *Paned) void {
-    assert(!self.child1.is_empty());
-    self.child1 = .empty;
-    c.gtk_paned_set_start_child(@ptrCast(self.paned), null);
-}
-
-pub fn removeChild2(self: *Paned) void {
-    assert(!self.child2.is_empty());
-    self.child2 = .empty;
-    c.gtk_paned_set_end_child(@ptrCast(self.paned), null);
-}
-
 pub fn splitStartPosition(self: *Paned, orientation: c.GtkOrientation) !void {
     _ = orientation;
     _ = self;

src/apprt/gtk/Tab.zig

@@ -18,17 +18,7 @@ pub const GHOSTTY_TAB = "ghostty_tab";
 pub const Child = union(enum) {
     surface: *Surface,
     paned: *Paned,
-
-    empty,
-
-    const Self = @This();
-
-    pub fn is_empty(self: Self) bool {
-        switch (self) {
-            Child.empty => return true,
-            else => return false,
-        }
-    }
+    none,
 };
 
 window: *Window,
@@ -163,10 +153,10 @@ pub fn removeChild(self: *Tab) void {
     const widget = switch (self.child) {
         .surface => |surface| @as(*c.GtkWidget, @ptrCast(surface.gl_area)),
         .paned => |paned| @as(*c.GtkWidget, @ptrCast(@alignCast(paned.paned))),
-        .empty => return,
+        .none => return,
     };
     c.gtk_box_remove(self.box, widget);
-    self.child = .empty;
+    self.child = .none;
 }
 
 pub fn setChild(self: *Tab, newChild: Child) void {
@@ -183,23 +173,15 @@ pub fn setChild(self: *Tab, newChild: Child) void {
             const widget = @as(*c.GtkWidget, @ptrCast(@alignCast(paned.paned)));
             c.gtk_box_append(self.box, widget);
         },
-        .empty => return,
+        .none => return,
     }
 
     self.child = newChild;
 }
 
-pub fn setChildSurface(self: *Tab, surface: *Surface, gl_area: *c.GtkWidget) !void {
-    c.gtk_box_append(self.box, gl_area);
-
-    const parent = Parent{ .tab = self };
-    surface.setParent(parent);
-
-    self.child = .{ .surface = surface };
-}
-
 fn gtkTabCloseClick(_: *c.GtkButton, ud: ?*anyopaque) callconv(.C) void {
     const tab: *Tab = @ptrCast(@alignCast(ud));
     _ = tab;
+    // TODO: Fix tab closing logic
     log.info("tab close click\n", .{});
 }

src/apprt/gtk/Window.zig

@@ -195,13 +195,26 @@ pub fn deinit(self: *Window) void {
 
 /// Add a new tab to this window.
 pub fn newTab(self: *Window, parentSurface: ?*CoreSurface) !void {
-    const tab = try Tab.create(self.app.core_app.alloc, self, parentSurface);
-    try self.tabs.append(self.app.core_app.alloc, tab);
+    const alloc = self.app.core_app.alloc;
+    const tab = try Tab.create(alloc, self, parentSurface);
+    try self.tabs.append(alloc, tab);
 
-    log.info("\n\n\nnewTab. New tabs len={}\n", .{self.tabs.items.len});
     // TODO: When this is triggered through a GTK action, the new surface
     // redraws correctly. When it's triggered through keyboard shortcuts, it
-    // does not (cursor doesn't blink).
+    // does not (cursor doesn't blink) unless reactivated by refocusing.
+}
+
+pub fn removeTab(self: *Window, tab: *Tab) !void {
+    // Remove the tab from our stored tabs.
+    const tab_idx = for (self.tabs.items, 0..) |t, i| {
+        if (t == tab) break i;
+    } else null;
+
+    // TODO: Shrink capacity?
+    if (tab_idx) |idx| _ = self.tabs.orderedRemove(idx) else return error.TabNotFound;
+
+    // Deallocate the tab
+    self.app.core_app.alloc.destroy(tab);
 }
 
 /// Close the tab for the given notebook page. This will automatically
@@ -215,20 +228,10 @@ fn closeTab(self: *Window, page: *c.GtkNotebookPage) void {
     ));
 
     // Remove the tab from our stored tabs.
-    const tab_idx = for (self.tabs.items, 0..) |t, i| {
-        if (t == tab) break i;
-    } else null;
-    // TODO: Shrink capacity?
-    if (tab_idx) |idx| {
-        _ = self.tabs.orderedRemove(idx);
-    } else {
-        log.info("tab of page {} not found in managed tabs list\n", .{page_idx});
+    self.removeTab(tab) catch |err| {
+        log.warn("tab {} not removable: {}", .{ page_idx, err });
         return;
-    }
-    // Deallocate the tab
-    self.app.core_app.alloc.destroy(tab);
-
-    log.info("\n\n\ncloseTab. New tabs len={}\n", .{self.tabs.items.len});
+    };
 
     // Now remove the page
     c.gtk_notebook_remove_page(self.notebook, page_idx);
@@ -293,8 +296,7 @@ pub fn closeSurface(self: *Window, surface: *Surface) void {
             defer c.g_object_unref(sibling_object);
 
             // Remove children and kill Paned.
-            paned.removeChild1();
-            paned.removeChild2();
+            paned.removeChildren();
             defer alloc.destroy(paned);
 
             // Remove children from Paned we were part of.
@@ -478,7 +480,6 @@ fn gtkCloseRequest(v: *c.GtkWindow, ud: ?*anyopaque) callconv(.C) bool {
         return true;
     }
 
-    log.debug("WE ARE HERE", .{});
     // Setup our basic message
     const alert = c.gtk_message_dialog_new(
         self.window,