From 594ca3486803296861fd7cdc16e764c4f0348d2d Mon Sep 17 00:00:00 2001
From: Kovid Goyal <kovid@kovidgoyal.net>
Date: Mon, 5 Dec 2016 07:37:29 +0530
Subject: [PATCH] Implement next_layout()

---
 kitty/layout.py |  2 +-
 kitty/tabs.py   | 13 +++++++++++--
 2 files changed, 12 insertions(+), 3 deletions(-)

diff --git a/kitty/layout.py b/kitty/layout.py
index 911148d1c..b4c3f5dd5 100644
--- a/kitty/layout.py
+++ b/kitty/layout.py
@@ -35,7 +35,7 @@ class Layout:
     name = None
     needs_window_borders = True
 
-    def __init__(self, opts, border_width):
+    def __init__(self, opts, border_width, windows):
         self.opts = opts
         self.border_width = border_width
 
diff --git a/kitty/tabs.py b/kitty/tabs.py
index d1dff709b..f262ed23a 100644
--- a/kitty/tabs.py
+++ b/kitty/tabs.py
@@ -68,15 +68,15 @@ class Tab:
         self.opts, self.args = opts, args
         self.enabled_layouts = opts.enabled_layouts
         self.borders = Borders(opts)
+        self.windows = deque()
         if args.window_layout:
             if args.window_layout not in self.enabled_layouts:
                 self.enabled_layouts.insert(0, args.window_layout)
             self.current_layout = all_layouts[args.window_layout]
         else:
             self.current_layout = all_layouts[self.enabled_layouts[0]]
-        self.windows = deque()
         self.active_window_idx = 0
-        self.current_layout = self.current_layout(opts, self.borders.border_width)
+        self.current_layout = self.current_layout(opts, self.borders.border_width, self.windows)
 
     @property
     def is_visible(self):
@@ -100,6 +100,15 @@ class Tab:
             self.current_layout(self.windows, self.active_window_idx)
         self.borders(self.windows, self.active_window, self.current_layout.needs_window_borders and len(self.windows) > 1)
 
+    def next_layout(self):
+        if len(self.opts.enabled_layouts) > 1:
+            idx = self.opts.enabled_layouts.index(self.current_layout.name)
+            nl = self.opts.enabled_layouts[(idx + 1) % len(self.opts.enabled_layouts)]
+            self.current_layout = all_layouts[nl](self.opts, self.borders.border_width, self.windows)
+            for w in self.windows:
+                w.is_visible_in_layout = True
+            self.relayout()
+
     def launch_child(self, use_shell=False):
         if use_shell:
             cmd = [shell_path]