plugin: Add PluginSettings context item, render it in settings screen

plugin/src/Components/App.lua

@@ -18,7 +18,6 @@ local ConnectingPanel = require(Plugin.Components.ConnectingPanel)
 local ConnectionActivePanel = require(Plugin.Components.ConnectionActivePanel)
 local ErrorPanel = require(Plugin.Components.ErrorPanel)
 local SettingsPanel = require(Plugin.Components.SettingsPanel)
-local Theme = require(Plugin.Components.Theme)
 
 local e = Roact.createElement
 
@@ -214,11 +213,9 @@ function App:render()
 		}
 	end
 
-	return e(Theme.StudioProvider, nil, {
-		UI = e(Roact.Portal, {
-			target = self.dockWidget,
-		}, children),
-	})
+	return e(Roact.Portal, {
+		target = self.dockWidget,
+	}, children)
 end
 
 function App:didMount()

plugin/src/Components/PluginSettings.lua

@@ -0,0 +1,119 @@
+--[[
+	Persistent plugin settings that can be accessed via Roact context.
+]]
+
+local Rojo = script:FindFirstAncestor("Rojo")
+
+local Roact = require(Rojo.Roact)
+
+local defaultSettings = {
+	openScriptsExternally = false,
+}
+
+local Settings = {}
+Settings.__index = Settings
+
+function Settings.fromPlugin(plugin)
+	local values = {}
+
+	for name, defaultValue in pairs(defaultSettings) do
+		local savedValue = plugin:GetSetting("Rojo_" .. name)
+
+		if savedValue == nil then
+			values[name] = defaultValue
+		else
+			values[name] = savedValue
+		end
+	end
+
+	return setmetatable({
+		__values = values,
+		__plugin = plugin,
+		__updateListeners = {},
+	}, Settings)
+end
+
+function Settings:get(name)
+	if defaultSettings[name] == nil then
+		error("Invalid setings name " .. tostring(name), 2)
+	end
+
+	return self.__values[name]
+end
+
+function Settings:set(name, value)
+	self.__plugin:SetSetting(name, value)
+	self.__values[name] = value
+
+	for callback in pairs(self.__updateListeners) do
+		callback(name, value)
+	end
+end
+
+function Settings:onUpdate(newCallback)
+	local newListeners = {}
+	for callback in pairs(self.__updateListeners) do
+		newListeners[callback] = true
+	end
+
+	newListeners[newCallback] = true
+	self.__updateListeners = newListeners
+
+	return function()
+		local newListeners = {}
+		for callback in pairs(self.__updateListeners) do
+			if callback ~= newCallback then
+				newListeners[callback] = true
+			end
+		end
+
+		self.__updateListeners = newListeners
+	end
+end
+
+local Context = Roact.createContext(nil)
+
+local StudioProvider = Roact.Component:extend("StudioProvider")
+
+function StudioProvider:init()
+	self.settings = Settings.fromPlugin(self.props.plugin)
+end
+
+function StudioProvider:render()
+	return Roact.createElement(Context.Provider, {
+		value = self.settings,
+	}, self.props[Roact.Children])
+end
+
+local InternalConsumer = Roact.Component:extend("InternalConsumer")
+
+function InternalConsumer:render()
+	return self.props.render(self.props.settings)
+end
+
+function InternalConsumer:didMount()
+	self.disconnect = self.props.settings:onUpdate(function()
+		-- Trigger a dummy state update to update the settings consumer.
+		self:setState({})
+	end)
+end
+
+function InternalConsumer:willUnmount()
+	self.disconnect()
+end
+
+local function with(callback)
+	return Roact.createElement(Context.Consumer, {
+		render = function(settings)
+			return Roact.createElement(InternalConsumer, {
+				settings = settings,
+				render = callback,
+			})
+		end,
+	})
+end
+
+return {
+	StudioProvider = StudioProvider,
+	with = with,
+}

plugin/src/Components/SettingsPanel.lua

@@ -2,10 +2,11 @@ local Roact = require(script:FindFirstAncestor("Rojo").Roact)
 
 local Plugin = script:FindFirstAncestor("Plugin")
 
-local Theme = require(Plugin.Components.Theme)
-local Panel = require(Plugin.Components.Panel)
 local FitText = require(Plugin.Components.FitText)
 local FormButton = require(Plugin.Components.FormButton)
+local Panel = require(Plugin.Components.Panel)
+local PluginSettings = require(Plugin.Components.PluginSettings)
+local Theme = require(Plugin.Components.Theme)
 
 local e = Roact.createElement
 
@@ -15,32 +16,34 @@ function SettingsPanel:render()
 	local back = self.props.back
 
 	return Theme.with(function(theme)
-		return e(Panel, nil, {
-			Layout = Roact.createElement("UIListLayout", {
-				HorizontalAlignment = Enum.HorizontalAlignment.Center,
-				VerticalAlignment = Enum.VerticalAlignment.Center,
-				SortOrder = Enum.SortOrder.LayoutOrder,
-				Padding = UDim.new(0, 8),
-			}),
+		return PluginSettings.with(function(settings)
+			return e(Panel, nil, {
+				Layout = Roact.createElement("UIListLayout", {
+					HorizontalAlignment = Enum.HorizontalAlignment.Center,
+					VerticalAlignment = Enum.VerticalAlignment.Center,
+					SortOrder = Enum.SortOrder.LayoutOrder,
+					Padding = UDim.new(0, 8),
+				}),
 
-			Text = e(FitText, {
-				Padding = Vector2.new(12, 6),
-				Font = theme.ButtonFont,
-				TextSize = 18,
-				Text = "This will be a settings panel.",
-				TextColor3 = theme.Text1,
-				BackgroundTransparency = 1,
-			}),
+				Text = e(FitText, {
+					Padding = Vector2.new(12, 6),
+					Font = theme.ButtonFont,
+					TextSize = 18,
+					Text = "openScriptsExternally: " .. tostring(settings:get("openScriptsExternally")),
+					TextColor3 = theme.Text1,
+					BackgroundTransparency = 1,
+				}),
 
-			DisconnectButton = e(FormButton, {
-				layoutOrder = 2,
-				text = "Okay",
-				secondary = true,
-				onClick = function()
-					back()
-				end,
-			}),
-		})
+				DisconnectButton = e(FormButton, {
+					layoutOrder = 2,
+					text = "Okay",
+					secondary = true,
+					onClick = function()
+						back()
+					end,
+				}),
+			})
+		end)
 	end)
 end
 

plugin/src/init.server.lua

@@ -14,9 +14,17 @@ local Roact = require(script.Parent.Roact)
 
 local Config = require(script.Config)
 local App = require(script.Components.App)
+local Theme = require(script.Components.Theme)
+local PluginSettings = require(script.Components.PluginSettings)
 
-local app = Roact.createElement(App, {
-	plugin = plugin,
+local app = Roact.createElement(Theme.StudioProvider, nil, {
+	Roact.createElement(PluginSettings.StudioProvider, {
+		plugin = plugin,
+	}, {
+		RojoUI = Roact.createElement(App, {
+			plugin = plugin,
+		}),
+	})
 })
 
 local tree = Roact.mount(app, nil, "Rojo UI")