dim empty groups

1 files changed, 30 insertions, 7 deletions

diff --git a/main.lua b/main.lua
index 98232fa..3cb55ec 100644
--- a/main.lua
+++ b/main.lua
@@ -5,15 +5,19 @@ local utils = require('mp.utils')
 -- font size is in units of osd height, which is scaled to 720
 local font_size = 20
 local colours = {
-	default='{\\c}',
+	bg='{\\alpha&H44&\\c&H&}',
+	title='{\\c&999999&}',
+	option='{\\c}',
 	group='{\\c&H99DDFF&}',
+	group_empty='{\\c&H446677&}',
 	selected='{\\c&HFF00&}',
-	title='{\\c&999999&}',
+	selected_empty='{\\c&H337733&}',
 	search_hl='{\\c&FFDD&}',
+	search_hl_empty='{\\c&8877&}',
 	search_path='{\\c&666666&}',
+	search_path_empty='{\\c&444444&}',
 	icon_playing='{\\c&HFF6633&}',
 	icon_favourite='{\\c&HFF00FF&}',
-	bg='{\\alpha&H44&\\c&H&}',
 }
 
 local script_dir = mp.get_script_directory()
@@ -108,6 +112,7 @@ local function load_section(section, name)
 			v.type = 'group'
 			v.group_type = 'series'
 			v.id = section .. ':series:' .. v.series_id
+			v.lazy = true
 		else
 			v.type = 'stream'
 			v.id = section .. ':stream:' .. v.stream_id
@@ -127,6 +132,7 @@ local function load_data()
 		id='favourites',
 		parent_id='root',
 		name='Favourites',
+		lazy=true,
 	})
 
 	load_section('live', 'Live TV')
@@ -169,12 +175,21 @@ local function update_osd()
 			menu.view_top + osd_menu_lines() - 1, #menu.options) do
 		local opt = menu.options[i]
 		local str = opt.name
-		local col = colours.default
+		local col = colours.option
 		local icons = ''
 
+		local is_empty = opt.type == 'group' and not opt.lazy and
+			#opt.children == 0
+
 		if i == menu.cursor and not menu.search_active then
 			col = colours.selected
 			icons = col .. '› ' .. icons
+
+			if is_empty then
+				col = colours.selected_empty
+			end
+		elseif is_empty then
+			col = colours.group_empty
 		elseif opt.type == 'group' then
 			col = colours.group
 		end
@@ -182,10 +197,15 @@ local function update_osd()
 		if opt.matches then
 			local buf = ''
 			local n = 0
+			local hl_col = colours.search_hl
+			if is_empty then
+				hl_col =  colours.search_hl_empty
+			end
+
 			for _, match in ipairs(opt.matches) do
 				buf = buf .. col ..
 					str:sub(n + 1, match.start - 1) ..
-					colours.search_hl ..
+					hl_col ..
 					str:sub(match.start, match.stop)
 				n = match.stop
 			end
@@ -206,6 +226,9 @@ local function update_osd()
 
 		if opt.path and #opt.path > 0 then
 			local path = colours.search_path
+			if is_empty then
+				path = colours.search_path_empty
+			end
 			for i = #opt.path, 1, -1 do
 				local node = opt.path[i]
 				path = path .. ' « [' .. node.name .. ']'
@@ -444,8 +467,8 @@ local function search_menu_options_build(options, t, path)
 		v.path = path
 		t[v.type][#t[v.type]+1] = v
 
-		if v.type == 'group' and v.id ~= 'favourites'
-				and v.group_type ~= 'series' then
+		-- contents of lazy-loaded groups should not be searchable
+		if v.type == 'group' and not v.lazy then
 			local path = copy_table(path)
 			path[#path+1] = v
 			search_menu_options_build(