#344 element redraws and shorter assert messages

graphics/elements/indicators/ledrgb.lua

@@ -18,19 +18,15 @@ local element = require("graphics.element")
 ---@param args indicator_led_rgb_args
 ---@return graphics_element element, element_id id
 local function indicator_led_rgb(args)
-    assert(type(args.label) == "string", "graphics.elements.indicators.ledrgb: label is a required field")
-    assert(type(args.colors) == "table", "graphics.elements.indicators.ledrgb: colors is a required field")
+    assert(type(args.label) == "string", "indicators.ledrgb: label is a required field")
+    assert(type(args.colors) == "table", "indicators.ledrgb: colors is a required field")
 
-    -- single line
     args.height = 1
-
-    -- determine width
     args.width = math.max(args.min_label_width or 0, string.len(args.label)) + 2
 
     -- create new graphics element base object
     local e = element.new(args)
 
-    -- init value for initial check in on_update
     e.value = 1
 
     -- on state change
@@ -47,13 +43,18 @@ local function indicator_led_rgb(args)
     ---@param val integer indicator state
     function e.set_value(val) e.on_update(val) end
 
-    -- write label and initial indicator light
-    e.on_update(1)
-    if string.len(args.label) > 0 then
-        e.w_set_cur(3, 1)
-        e.w_write(args.label)
+    -- draw label and indicator light
+    function e.redraw()
+        e.on_update(e.value)
+        if string.len(args.label) > 0 then
+            e.w_set_cur(3, 1)
+            e.w_write(args.label)
+        end
     end
 
+    -- initial draw
+    e.redraw()
+
     return e.complete()
 end