Add ToC to generated pages

UI/QueryParameterDocumentation.ts

@@ -0,0 +1,40 @@
+import BaseUIElement from "./BaseUIElement";
+import Combine from "./Base/Combine";
+import Title from "./Base/Title";
+import List from "./Base/List";
+import Translations from "./i18n/Translations";
+import {QueryParameters} from "../Logic/Web/QueryParameters";
+
+export default class QueryParameterDocumentation {
+
+    private static QueryParamDocsIntro = ([
+        new Title("URL-parameters and URL-hash", 1),
+        "This document gives an overview of which URL-parameters can be used to influence MapComplete.",
+        new Title("What is a URL parameter?", 2),
+        "\"URL-parameters are extra parts of the URL used to set the state.",
+        "For example, if the url is `https://mapcomplete.osm.be/cyclofix?lat=51.0&lon=4.3&z=5&test=true#node/1234`, " +
+        "the URL-parameters are stated in the part between the `?` and the `#`. There are multiple, all separated by `&`, namely: ",
+        new List([
+                "The url-parameter `lat` is `51.0` in this instance",
+                "The url-parameter `lon` is `4.3` in this instance",
+                "The url-parameter `z` is `5` in this instance",
+                "The url-parameter `test` is `true` in this instance"
+            ].map(s => Translations.W(s))
+        ),
+        "Finally, the URL-hash is the part after the `#`. It is `node/1234` in this case."
+    ])
+    
+    public static GenerateQueryParameterDocs(): BaseUIElement {
+        const docs : (string | BaseUIElement)[] = [...QueryParameterDocumentation.QueryParamDocsIntro];
+        for (const key in QueryParameters.documentation) {
+            const c = new Combine([
+                new Title(key, 2),
+                QueryParameters.documentation[key],
+                QueryParameters.defaults[key] === undefined ? "No default value set" : `The default value is _${QueryParameters.defaults[key]}_`
+
+            ])
+            docs.push(c)
+        }
+        return new Combine(docs).SetClass("flex flex-col")
+    }
+}