Use tabs to switch between signaling and IP forms

1 files changed, 31 insertions, 5 deletions

diff --git a/advtrains/formspec.lua b/advtrains/formspec.lua
index 91e300d..aa5aa69 100644
--- a/advtrains/formspec.lua
+++ b/advtrains/formspec.lua
@@ -1,6 +1,14 @@
 local sformat = string.format
 local fsescape = minetest.formspec_escape
 
+local function make_list(entries)
+	local t = {}
+	for k, v in ipairs(entries) do
+		t[k] = fsescape(v)
+	end
+	return table.concat(t, ",")
+end
+
 local function f_button_exit(x, y, w, h, id, text)
 	return sformat("button_exit[%f,%f;%f,%f;%s;%s]", x, y, w, h, id, text)
 end
@@ -10,12 +18,8 @@ local function S_button_exit(x, y, w, h, id, ...)
 end
 
 local function f_dropdown(x, y, w, id, entries, sel, indexed)
-	local t = {}
-	for k, v in pairs(entries) do
-		t[k] = fsescape(v)
-	end
 	return sformat("dropdown[%f,%f;%f;%s;%s;%d%s]",
-		x, y, w, id, table.concat(t, ","),
+		x, y, w, id, make_list(entries),
 		sel or 1,
 		indexed and ";true" or "")
 end
@@ -28,10 +32,32 @@ local function S_label(x, y, ...)
 	return f_label(x, y, attrans(...))
 end
 
+local function f_tabheader(x, y, w, h, id, entries, sel, transparent, border)
+	local st = {string.format("%f,%f",x, y)}
+	if h then
+		if w then
+			st[#st+1] = string.format("%f,%f", w, h)
+		else
+			st[#st+1] = tostring(h)
+		end
+	end
+	st[#st+1] = tostring(id)
+	st[#st+1] = make_list(entries)
+	st[#st+1] = tostring(sel)
+	if transparent ~= nil then
+		st[#st+1] = tostring(transparent)
+		if border ~= nil then
+			st[#st+1] = tostring(border)
+		end
+	end
+	return string.format("tabheader[%s]", table.concat(st, ";"))
+end
+
 return {
 	button_exit = f_button_exit,
 	S_button_exit = S_button_exit,
 	dropdown = f_dropdown,
 	label = f_label,
 	S_label = S_label,
+	tabheader = f_tabheader,
 }