Refactoring: move all code files into a src directory

src/Models/ThemeConfig/ExtraLinkConfig.ts

@@ -0,0 +1,43 @@
+import ExtraLinkConfigJson from "./Json/ExtraLinkConfigJson"
+import { Translation } from "../../UI/i18n/Translation"
+import Translations from "../../UI/i18n/Translations"
+
+export default class ExtraLinkConfig {
+    public readonly icon?: string
+    public readonly text?: Translation
+    public readonly href: string
+    public readonly newTab?: false | boolean
+    public readonly requirements?: Set<
+        "iframe" | "no-iframe" | "welcome-message" | "no-welcome-message"
+    >
+
+    constructor(configJson: ExtraLinkConfigJson, context) {
+        this.icon = configJson.icon
+        this.text = Translations.T(configJson.text, "themes:" + context + ".text")
+        this.href = configJson.href
+        this.newTab = configJson.newTab
+        this.requirements = new Set(configJson.requirements)
+
+        for (let requirement of configJson.requirements) {
+            if (this.requirements.has(<any>("no-" + requirement))) {
+                throw (
+                    "Conflicting requirements found for " +
+                    context +
+                    ".extraLink: both '" +
+                    requirement +
+                    "' and 'no-" +
+                    requirement +
+                    "' found"
+                )
+            }
+        }
+
+        if (this.icon === undefined && this.text === undefined) {
+            throw (
+                "At " +
+                context +
+                ".extraLink: define at least an icon or a text to show. Both are undefined, this is not allowed"
+            )
+        }
+    }
+}