First steps.

lib/settings.js

@@ -0,0 +1,146 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+ (function(){
+	"use strict";
+
+	var scope;
+	if ((typeof exports) !== "undefined"){
+		scope = exports;
+	}
+	else {
+		window.scope.settings = {};
+		scope = window.scope.settings;
+	}
+
+	var settingDefinitions = [
+		{
+			name: "logLevel",
+			defaultValue: 1
+		},
+		{
+			name: "whiteList",
+			defaultValue: ""
+		},
+		{
+			name: "blackList",
+			defaultValue: ""
+		},
+		{
+			name: "blockMode",
+			defaultValue: "fakeReadout",
+			options: ["blockReadout", "fakeReadout", "fakeInput", "askReadout", "blockEverything", "block", "ask", "allow", "allowEverything"]
+		},
+		{
+			name: "minFakeSize",
+			defaultValue: 1
+		},
+		{
+			name: "maxFakeSize",
+			defaultValue: 0
+		},
+		{
+			name: "rng",
+			defaultValue: "nonPersistent",
+			options: ["nonPersistent", "constant", "persistent"]
+		},
+		{
+			name: "useCanvasCache",
+			defaultValue: true
+		},
+		{
+			name: "ignoreFrequentColors",
+			defaultValue: 0
+		},
+		{
+			name: "fakeAlphaChannel",
+			defaultValue: false
+		},
+		{
+			name: "persistentRndStorage",
+			defaultValue: ""
+		},
+		{
+			name: "storePersistentRnd",
+			defaultValue: false
+		},
+		{
+			name: "askOnlyOnce",
+			defaultValue: true
+		},
+		{
+			name: "showNotifications",
+			defaultValue: true
+		},
+		{
+			name: "storeImageForInspection",
+			defaultValue: false
+		},
+		{
+			name: "notificationDisplayTime",
+			defaultValue: 30
+		},
+		{
+			name: "ignoreList",
+			defaultValue: ""
+		},
+		{
+			name: "showCallingFile",
+			defaultValue: false
+		},
+		{
+			name: "showCompleteCallingStack",
+			defaultValue: false
+		},
+		{
+			name: "enableStackList",
+			defaultValue: false
+		},
+		{
+			name: "stackList",
+			defaultValue: ""
+		},
+		{
+			name: "displayAdvancedSettings",
+			defaultValue: false
+		},
+		{
+			name: "isStillDefault",
+			defaultValue: true
+		}
+	];
+
+	var settings = {};
+	window.settings = {};
+
+	settingDefinitions.forEach(function(settingDefinition){
+		var name = settingDefinition.name;
+		settings[name] = settingDefinition.defaultValue;
+		Object.defineProperty(
+			window.settings,
+			{
+				name: name,
+				get: function(){
+					return settings[name]
+				},
+				set: function(newValue){
+					if ((typeof newValue) === (typeof settingDefinition.defaultValue)){
+						if (
+							!settingDefinition.options ||
+							settingDefinition.options.includes(newValue)
+						){
+							settings[name] = newValue;
+							
+						}
+					}
+				}
+			}
+		);
+	});
+
+	scope.forEach = function forEachSetting(...args){
+		settingDefinitions.map(function(settingDefinition){
+			return Object.create(settingDefinition);
+		}).forEach(...args);
+	}
+}());