move apis into rom/modules/main for shell compatibility

sys/modules/opus/ui/components/TabBarMenuItem.lua

@@ -0,0 +1,25 @@
+local class = require('opus.class')
+local UI    = require('opus.ui')
+
+local colors = _G.colors
+
+--[[-- TabBarMenuItem --]]--
+UI.TabBarMenuItem = class(UI.Button)
+UI.TabBarMenuItem.defaults = {
+	UIElement = 'TabBarMenuItem',
+	event = 'tab_select',
+	textColor = colors.black,
+	selectedBackgroundColor = colors.cyan,
+	unselectedBackgroundColor = colors.lightGray,
+	backgroundColor = colors.lightGray,
+}
+function UI.TabBarMenuItem:draw()
+	if self.selected then
+		self.backgroundColor = self.selectedBackgroundColor
+		self.backgroundFocusColor = self.selectedBackgroundColor
+	else
+		self.backgroundColor = self.unselectedBackgroundColor
+		self.backgroundFocusColor = self.unselectedBackgroundColor
+	end
+	UI.Button.draw(self)
+end