Fix bgcolor fullscreen value

core.lua

@@ -142,6 +142,13 @@ function types.boolean(bool)
     end
 end
 
+function types.fullscreen(param)
+    if param == 'both' or param == 'neither' then
+        return param
+    end
+    return types.boolean(param)
+end
+
 function types.table(obj)
     local s, e = obj:find('=', nil, true)
     assert(s, 'Invalid syntax: "' .. obj .. '".')

elements.yaml

@@ -65,10 +65,10 @@ background9:
   - - [middle_x, number]
 bgcolor:
 - - [bgcolor, string]
-  - [fullscreen, boolean]
+  - [fullscreen, fullscreen]
   - [fbgcolor, string]
 - - [bgcolor, string]
-  - [fullscreen, boolean]
+  - [fullscreen, fullscreen]
 - - [bgcolor, string]
 box:
 - - - [x, number]

make_elements.py

@@ -18,8 +18,9 @@ _known = _make_known(
             'starting_item_index', 'scroll_factor', 'frame_count',
             'frame_duration', 'frame_start'),
     boolean=('auto_clip', 'fixed_size', 'transparent', 'draw_border', 'bool',
-             'fullscreen', 'noclip', 'drawborder', 'selected', 'force',
-             'close_on_enter', 'continuous', 'mouse_control'),
+             'noclip', 'drawborder', 'selected', 'force', 'close_on_enter',
+             'continuous', 'mouse_control'),
+    fullscreen=('fullscreen',),
     table=('param', 'opt', 'prop'),
     null=('',),
 )

tests.lua

@@ -82,6 +82,8 @@ local fs = [[
     dropdown[0,0;1;test;abc,def,ghi,jkl;2]
     field_close_on_enter[my-field;false]
     bgcolor[blue]
+    bgcolor[blue;true]
+    bgcolor[blue;both;green]
 ]]
 fs = ('\n' .. fs):gsub('\n[ \n]*', '')
 
@@ -173,6 +175,17 @@ test_parse_unparse(fs, {
         type = "bgcolor",
         bgcolor = "blue",
     },
+    {
+        type = "bgcolor",
+        bgcolor = "blue",
+        fullscreen = true,
+    },
+    {
+        type = "bgcolor",
+        bgcolor = "blue",
+        fullscreen = "both",
+        fbgcolor = "green",
+    },
 })
 
 local function permutations(elem_s, elem, ...)