add radio_group component

druid/base/radio_group.lua

@@ -0,0 +1,52 @@
+--- Radio group module
+-- @module base.checkbox_group
+
+local M = {}
+
+
+local function on_checkbox_click(self, index)
+	for i = 1, #self.checkboxes do
+		self.checkboxes[i]:set_state(i == index, true)
+	end
+
+	if self.callback then
+		self.callback(self.parent.parent, index)
+	end
+end
+
+
+function M.set_state(self, index)
+	on_checkbox_click(self, index)
+end
+
+
+function M.get_state(self)
+	local result = -1
+
+	for i = 1, #self.checkboxes do
+		if self.checkboxes[i]:get_state() then
+			result = i
+			break
+		end
+	end
+
+	return result
+end
+
+
+function M.init(self, nodes, callback, click_nodes)
+	self.checkboxes = {}
+	self.callback = callback
+
+	for i = 1, #nodes do
+		local click_node = click_nodes and click_nodes[i] or nil
+		local checkbox = self.parent:new_checkbox(nodes[i], function()
+			on_checkbox_click(self, i)
+		end, click_node)
+
+		table.insert(self.checkboxes, checkbox)
+	end
+end
+
+
+return M

druid/druid.lua

@@ -25,6 +25,7 @@ M.comps = {
 	slider = require("druid.base.slider"),
 	checkbox = require("druid.base.checkbox"),
 	checkbox_group = require("druid.base.checkbox_group"),
+	radio_group = require("druid.base.radio_group"),
 
 	progress_rich = require("druid.rich.progress_rich"),
 }

example/kenney/page/main.lua

@@ -72,9 +72,9 @@ end
 
 
 local function setup_checkbox(self)
-	local group1 = self.druid:new_checkbox_group(
+	local radio_group = self.druid:new_radio_group(
 		{"radio1/check", "radio2/check", "radio3/check"},
-		nil, true,
+		nil,
 		{"radio1/back", "radio2/back", "radio3/back"})
 
 	local checkbox_group = self.druid:new_checkbox_group(
@@ -82,7 +82,7 @@ local function setup_checkbox(self)
 		nil,
 		{"checkbox1/back", "checkbox2/back", "checkbox3/back"})
 
-	group1:set_state({false, false, true})
+	radio_group:set_state(2)
 	checkbox_group:set_state({true, false, true})
 end