Zoom to second view in stack if top is focused

 src/command/zoom.zig | 19 +++++++++++++------
 1 file changed, 13 insertions(+), 6 deletions(-)

diff --git a/src/command/zoom.zig b/src/command/zoom.zig
index 507620d..b24683e 100644
--- a/src/command/zoom.zig
+++ b/src/command/zoom.zig
@@ -5,16 +5,23 @@ const Seat = @import("../seat.zig").Seat;
 const View = @import("../view.zig").View;
 const ViewStack = @import("../view_stack.zig").ViewStack;
 
-/// Bump the focused view to the top of the stack.
-/// TODO: if the top of the stack is focused, bump the next visible view.
+/// Bump the focused view to the top of the stack. If the view on the top of
+/// the stack is focused, bump the second view to the top.
 pub fn zoom(seat: *Seat, arg: Arg) void {
     if (seat.focused_view) |current_focus| {
         const output = seat.focused_output;
-        const node = @fieldParentPtr(ViewStack(View).Node, "view", current_focus);
-        if (node != output.views.first) {
-            output.views.remove(node);
-            output.views.push(node);
+        const focused_node = @fieldParentPtr(ViewStack(View).Node, "view", current_focus);
+
+        const zoom_node = if (focused_node == output.views.first)
+            if (focused_node.next) |second| second else null
+        else
+            focused_node;
+
+        if (zoom_node) |to_bump| {
+            output.views.remove(to_bump);
+            output.views.push(to_bump);
             seat.input_manager.server.root.arrange();
+            seat.focus(&to_bump.view);
         }
     }
 }