cherry-pick checkbox_group component

druid/base/checkbox.lua

@@ -26,6 +26,11 @@ function M.set_state(self, state, is_silence)
 end
 
 
+function M.get_state(self)
+	return self.state
+end
+
+
 -- TODO: pass self as first parameter
 local function on_click(context, self)
 	M.set_state(self, not self.state)
@@ -36,6 +41,7 @@ function M.init(self, node, callback, click_node)
 	self.node = helper.get_node(node)
 	self.click_node = helper.get_node(click_node)
 	self.callback = callback
+
 	self.button = self.parent:new_button(self.click_node or self.node, on_click, self)
 	M.set_state(self, false, true)
 end

druid/base/checkbox_group.lua

@@ -0,0 +1,47 @@
+local M = {}
+
+
+local function on_checkbox_click(self, index)
+	if self.is_radio_mode then
+		for i = 1, #self.checkboxes do
+			self.checkboxes[i]:set_state(i == index, true)
+		end
+	end
+end
+
+
+function M.set_state(self, indexes)
+	for i = 1, #indexes do
+		if self.checkbox[indexes[i]] then
+			self.checkbox[indexes[i]]:set_state(true, true)
+		end
+	end
+end
+
+
+function M.get_state(self)
+	local result = {}
+
+	for i = 1, #self.checkboxes do
+		table.insert(result, self.checkboxes[i]:get_state())
+	end
+
+	return result
+end
+
+
+function M.init(self, nodes, callback, is_radio_mode, anim_nodes)
+	self.is_radio_mode = is_radio_mode
+	self.checkboxes = {}
+
+	for i = 1, #nodes do
+		local anim_node = anim_nodes and anim_nodes[i] or nil
+		local checkbox = self.parent:new_checkbox(nodes[i], function()
+			on_checkbox_click(self, i)
+		end, anim_node)
+		table.insert(self.checkboxes, checkbox)
+	end
+end
+
+
+return M

druid/druid.lua

@@ -16,6 +16,7 @@ M.comps = {
 	grid = require("druid.base.grid"),
 	scroll = require("druid.base.scroll"),
 	checkbox = require("druid.base.checkbox"),
+	checkbox_group = require("druid.base.checkbox_group"),
 
 	progress_rich = require("druid.rich.progress_rich"),
 }