Add keybind to move current focus to top of stack

src/keyboard.zig

@@ -94,7 +94,7 @@ pub const Keyboard = struct {
             // process it as a compositor keybinding.
             var i: usize = 0;
             while (i < nsyms) {
-                handled = keyboard.seat.server.handleKeybinding(syms.?[i]);
+                handled = keyboard.seat.server.handleKeybinding(syms.?[i], modifiers);
                 if (handled) {
                     break;
                 }

src/server.zig

@@ -105,14 +105,23 @@ pub const Server = struct {
         c.wl_display_run(self.wl_display);
     }
 
-    pub fn handleKeybinding(self: *Self, sym: c.xkb_keysym_t) bool {
+    pub fn handleKeybinding(self: *Self, sym: c.xkb_keysym_t, modifiers: u32) bool {
-        // Here we handle compositor keybindings. This is when the compositor is
-        // processing keys, rather than passing them on to the client for its own
-        // processing.
-        //
         // This function assumes the proper modifier is held down.
+        if (modifiers & @intCast(u32, c.WLR_MODIFIER_SHIFT) != 0) {
             switch (sym) {
-            c.XKB_KEY_Escape => c.wl_display_terminate(self.wl_display),
+                c.XKB_KEY_Return => {
+                    if (self.root.focused_view) |current_focus| {
+                        const node = @fieldParentPtr(std.TailQueue(View).Node, "data", current_focus);
+                        self.root.views.remove(node);
+                        self.root.views.prepend(node);
+                        self.root.arrange();
+                    }
+                },
+                else => return false,
+            }
+        } else {
+            switch (sym) {
+                c.XKB_KEY_e => c.wl_display_terminate(self.wl_display),
                 c.XKB_KEY_j => self.root.focusNextView(),
                 c.XKB_KEY_k => self.root.focusPrevView(),
                 c.XKB_KEY_Return => {
@@ -124,6 +133,7 @@ pub const Server = struct {
                 },
                 else => return false,
             }
+        }
         return true;
     }