added hotkey to hide ui elements

stable.user.js

@@ -46,7 +46,7 @@
 // : Script header {{{
 // ==UserScript==
 // @name         Moodle/Elearning/KMOOC test help
-// @version      2.1.3.13
+// @version      2.1.3.14
 // @description  Online Moodle/Elearning/KMOOC test help
 // @author       MrFry
 // @match        https://elearning.uni-obuda.hu/*
@@ -70,6 +70,7 @@
 // @match        https://moodle.ms.sapientia.ro/*
 // @match        https://moodle.uni-corvinus.hu/*
 // @match        https://v39.moodle.uniduna.hu/*
+// @match        https://mentok.net/*
 // @match        https://qmining.frylabs.net/*
 // @noframes
 // @run-at       document-start
@@ -147,6 +148,7 @@
   var motd = ''
   var lastestVersion = ''
   var subjInfo
+  var uiShowing = true
 
   // array, where elems are added to shadow-root, but its position should be at target.
   var updatableElements = [] // { elem: ..., target: ... }
@@ -1465,6 +1467,21 @@
     if (document.readyState === 'loading') {
       document.addEventListener('DOMContentLoaded', Init)
     } else {
+      try {
+        addEventListener = (function () {
+          if (document.addEventListener) {
+            return function (element, event, handler) {
+              element.addEventListener(event, handler, false)
+            }
+          } else {
+            return function (element, event, handler) {
+              element.attachEvent('on' + event, handler)
+            }
+          }
+        })()
+      } catch (e) {
+        Exception(e, 'script error at addEventListener:')
+      }
       Init()
     }
   }
@@ -1668,23 +1685,9 @@
       return
     }
 
-    try {
-      addEventListener = (function () {
-        if (document.addEventListener) {
-          return function (element, event, handler) {
-            element.addEventListener(event, handler, false)
-          }
-        } else {
-          return function (element, event, handler) {
-            element.attachEvent('on' + event, handler)
-          }
-        }
-      })()
-    } catch (e) {
-      Exception(e, 'script error at addEventListener:')
-    }
     VersionActions()
     if (!url.includes('.pdf')) {
+      SetupMenu()
       ShowMenu()
     }
     ConnectToServer(AfterLoad)
@@ -1749,6 +1752,7 @@
       })
       .catch(() => {
         NoServerAction()
+        warn(texts.noServerConsoleMessage)
       })
   }
 
@@ -1774,7 +1778,6 @@
     SafeGetElementById('retryContainer', (elem) => {
       elem.style.display = 'flex'
     })
-    warn(texts.noServerConsoleMessage)
   }
 
   function VersionActions() {
@@ -2239,6 +2242,34 @@
     })
   }
 
+  function ToggleUIElements() {
+    const newVal = uiShowing ? 'none' : ''
+    SafeGetElementById(
+      'scriptMessage',
+      (elem) => {
+        elem.style.display = newVal
+      },
+      true
+    )
+    SafeGetElementById(
+      'scriptMenuDiv',
+      (elem) => {
+        elem.style.display = newVal
+      },
+      true
+    )
+    uiShowing = !uiShowing
+  }
+
+  function SetupMenu() {
+    document.addEventListener('keydown', (event) => {
+      if (event.ctrlKey && event.key === 'h') {
+        event.preventDefault()
+        ToggleUIElements()
+      }
+    })
+  }
+
   function ShowMessage(msgItem, timeout, funct) {
     let isSimpleMessage = false
     let simpleMessageText = ''
@@ -2785,11 +2816,12 @@
     }
   }
 
-  function SafeGetElementById(id, next) {
+  function SafeGetElementById(id, next, silent) {
     const element = overlay.querySelector('#' + id)
     if (element) {
       next(element)
     } else {
+      if (silent) return
       log(`Unable to safe get element by id: ${id}`)
     }
   }