From e33b310682ddcb412377f4d968e51e03d2aa0199 Mon Sep 17 00:00:00 2001
From: Ren Tatsumoto <tatsu@autistici.org>
Date: Fri, 23 Oct 2020 16:10:29 +0300
Subject: [PATCH] move common menu code in a separate class

---
 videoclip.lua | 47 +++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 47 insertions(+)

diff --git a/videoclip.lua b/videoclip.lua
index c520699..9e3d510 100644
--- a/videoclip.lua
+++ b/videoclip.lua
@@ -199,6 +199,53 @@ encoder.create_clip = function(clip_type)
     menu.timings:reset()
 end
 
+------------------------------------------------------------
+-- Menu interface
+
+local Menu = {}
+Menu.__index = Menu
+
+function Menu:new(parent)
+    local o = {
+        parent = parent,
+        overlay = parent and parent.overlay or mp.create_osd_overlay('ass-events'),
+        keybinds = { },
+    }
+    return setmetatable(o, self)
+end
+
+function Menu:overlay_draw(text)
+    self.overlay.data = text
+    self.overlay:update()
+end
+
+function Menu:open()
+    if self.parent then
+        self.parent:close()
+    end
+    for _, val in pairs(self.keybinds) do
+        mp.add_key_binding(val.key, val.key, val.fn)
+    end
+    self:update()
+end
+
+function Menu:close()
+    for _, val in pairs(self.keybinds) do
+        mp.remove_key_binding(val.key)
+    end
+    if self.parent then
+        self.parent:open()
+    else
+        self.overlay:remove()
+    end
+end
+
+function Menu:update()
+    local osd = OSD:new():size(config.font_size):align(4)
+    osd:append('Dummy menu.'):newline()
+    self:overlay_draw(osd:get_text())
+end
+
 ------------------------------------------------------------
 -- main menu