before task parser

2026-03-29 20:05:38 +03:00 · 2024-11-25 15:25:55 +03:00
parent 2ed1eac956
commit 7637922872
401 changed files with 39759 additions and 1630 deletions
--- a/DB_IaT/InstructorsAndTrainees/CMakeLists.txt.user
+++ b/DB_IaT/InstructorsAndTrainees/CMakeLists.txt.user
@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <!DOCTYPE QtCreatorProject>
-<!-- Written by QtCreator 4.11.1, 2024-11-13T17:15:54. -->
+<!-- Written by QtCreator 4.11.1, 2024-11-25T15:15:00. -->
 <qtcreator>
 <data>
  <variable>EnvironmentId</variable>
--- a/DB_IaT/InstructorsAndTrainees/commonview.cpp
+++ b/DB_IaT/InstructorsAndTrainees/commonview.cpp
@@ -1,15 +1,17 @@
 #include "commonview.h"


-CommonView::CommonView(TypeView type, bool adminMode, QWidget *parent):
+CommonView::CommonView(InterfaceDataBaseLMS* dbLMS, TypeView type, QWidget *parent):
    QWidget(parent),
+    dbLMS(dbLMS),
    treeWidget(nullptr),
    typeView(type),
    archiveVisible(false),
    notLoggedInVisible(false),
-    adminMode(adminMode)
+    adminMode(false),
+    authComplited(false)
 {
-
+    treeWidget = new QTreeWidget();
 }

 void CommonView::setItemColorArchive(QTreeWidgetItem *item)
@@ -24,8 +26,8 @@ void CommonView::setItemColorNoArchive(QTreeWidgetItem *item)

 void CommonView::setItemColor(QTreeWidgetItem *item, QColor color)
 {
-    int columnCount = treeWidget->columnCount();
+    //int columnCount = treeWidget->columnCount();

-    for (int i = 0; i < columnCount; i++)
+    for (int i = 0; i < item->columnCount(); i++)
        item->setBackground(i, color);
 }
--- a/DB_IaT/InstructorsAndTrainees/commonview.h
+++ b/DB_IaT/InstructorsAndTrainees/commonview.h
@@ -3,7 +3,9 @@

 #include <QTreeWidget>
 #include <QTranslator>
+#include <QMutex>
 #include "instructorsAndTrainees_global.h"
+#include "interfacedatabaselms.h"

 //Родительский класс представления БД Инструкторов/Обучаемых (самого верхнего уровня)

@@ -19,7 +21,17 @@ public:
    };

 public:
-    CommonView(TypeView type, bool adminMode, QWidget *parent = nullptr);
+    CommonView(InterfaceDataBaseLMS* dbLMS, TypeView type, QWidget *parent = nullptr);
+
+public:
+    void setAdminMode(bool adminMode)
+    {
+        this->adminMode = adminMode;
+    }
+    void setAuthComplited(bool authComplited)
+    {
+        this->authComplited = authComplited;
+    }

 protected:
    void setArchiveVisible(bool archiveVisible)
@@ -37,14 +49,14 @@ protected:
    void setItemColor(QTreeWidgetItem* item, QColor color);

 protected:
+    InterfaceDataBaseLMS* dbLMS;
    QTreeWidget* treeWidget;
+    QMutex mtxTreeWidget;
    TypeView typeView;
    bool archiveVisible;
    bool notLoggedInVisible;
    bool adminMode;
-
-protected:
-    QTranslator qtLanguageTranslator;
+    bool authComplited;
 };

 #endif // COMMONVIEW_H
--- a/DB_IaT/InstructorsAndTrainees/icons/connectDB.png
+++ b/DB_IaT/InstructorsAndTrainees/icons/connectDB.png
--- a/DB_IaT/InstructorsAndTrainees/icons/login-user.png
+++ b/DB_IaT/InstructorsAndTrainees/icons/login-user.png
--- a/DB_IaT/InstructorsAndTrainees/instructors/dialogauthorizationinstructor.ui
+++ b/DB_IaT/InstructorsAndTrainees/instructors/dialogauthorizationinstructor.ui
@@ -13,6 +13,7 @@
  <property name="font">
   <font>
    <family>Tahoma</family>
+    <pointsize>10</pointsize>
   </font>
  </property>
  <property name="windowTitle">
@@ -25,6 +26,11 @@
      <layout class="QHBoxLayout" name="horizontalLayout">
       <item>
        <widget class="QLabel" name="label">
+         <property name="font">
+          <font>
+           <pointsize>10</pointsize>
+          </font>
+         </property>
         <property name="text">
          <string>Login</string>
         </property>
@@ -32,6 +38,11 @@
       </item>
       <item>
        <widget class="QLineEdit" name="editLogin">
+         <property name="font">
+          <font>
+           <pointsize>10</pointsize>
+          </font>
+         </property>
         <property name="text">
          <string>admin</string>
         </property>
@@ -43,6 +54,11 @@
      <layout class="QHBoxLayout" name="horizontalLayout_2">
       <item>
        <widget class="QLabel" name="label_2">
+         <property name="font">
+          <font>
+           <pointsize>10</pointsize>
+          </font>
+         </property>
         <property name="text">
          <string>Password</string>
         </property>
@@ -50,6 +66,11 @@
       </item>
       <item>
        <widget class="QLineEdit" name="editPassword">
+         <property name="font">
+          <font>
+           <pointsize>10</pointsize>
+          </font>
+         </property>
         <property name="text">
          <string>admin</string>
         </property>
@@ -59,6 +80,11 @@
     </item>
     <item>
      <widget class="QDialogButtonBox" name="buttonBox">
+       <property name="font">
+        <font>
+         <pointsize>10</pointsize>
+        </font>
+       </property>
       <property name="locale">
        <locale language="English" country="UnitedStates"/>
       </property>
--- a/DB_IaT/InstructorsAndTrainees/instructors/dialogeditinstructor.ui
+++ b/DB_IaT/InstructorsAndTrainees/instructors/dialogeditinstructor.ui
@@ -13,6 +13,7 @@
  <property name="font">
   <font>
    <family>Tahoma</family>
+    <pointsize>10</pointsize>
   </font>
  </property>
  <property name="windowTitle">
@@ -25,6 +26,11 @@
      <layout class="QHBoxLayout" name="horizontalLayout">
       <item>
        <widget class="QLabel" name="label_2">
+         <property name="font">
+          <font>
+           <pointsize>10</pointsize>
+          </font>
+         </property>
         <property name="text">
          <string>Name</string>
         </property>
@@ -43,6 +49,11 @@
      <layout class="QHBoxLayout" name="horizontalLayout_2">
       <item>
        <widget class="QLabel" name="label_3">
+         <property name="font">
+          <font>
+           <pointsize>10</pointsize>
+          </font>
+         </property>
         <property name="text">
          <string>Login</string>
         </property>
@@ -57,6 +68,11 @@
      <layout class="QHBoxLayout" name="horizontalLayout_3">
       <item>
        <widget class="QLabel" name="label_4">
+         <property name="font">
+          <font>
+           <pointsize>10</pointsize>
+          </font>
+         </property>
         <property name="text">
          <string>Password</string>
         </property>
@@ -74,6 +90,11 @@
         <property name="enabled">
          <bool>false</bool>
         </property>
+         <property name="font">
+          <font>
+           <pointsize>10</pointsize>
+          </font>
+         </property>
         <property name="text">
          <string>Administrator</string>
         </property>
@@ -96,6 +117,11 @@
         <property name="enabled">
          <bool>false</bool>
         </property>
+         <property name="font">
+          <font>
+           <pointsize>10</pointsize>
+          </font>
+         </property>
         <property name="text">
          <string>Archived</string>
         </property>
@@ -118,6 +144,11 @@
         <property name="enabled">
          <bool>false</bool>
         </property>
+         <property name="font">
+          <font>
+           <pointsize>10</pointsize>
+          </font>
+         </property>
         <property name="text">
          <string>Logged</string>
         </property>
@@ -137,6 +168,11 @@
   </item>
   <item row="1" column="0">
    <widget class="QDialogButtonBox" name="buttonBox">
+     <property name="font">
+      <font>
+       <pointsize>10</pointsize>
+      </font>
+     </property>
     <property name="locale">
      <locale language="English" country="UnitedStates"/>
     </property>
--- a/DB_IaT/InstructorsAndTrainees/instructors/editorinstructors.cpp
+++ b/DB_IaT/InstructorsAndTrainees/instructors/editorinstructors.cpp
@@ -4,17 +4,23 @@
 #include "ui_editorinstructors.h"

 EditorInstructors::EditorInstructors(InterfaceDataBaseLMS* dbLMS, bool adminMode, QWidget *parent) :
-    InstructorsView(dbLMS, CommonView::TypeView::control, adminMode, parent),
+    InstructorsView(dbLMS, CommonView::TypeView::control, parent),
    ui(new Ui::EditorInstructors)
 {
    ui->setupUi((QDialog*)this);

-    preparationTreeWidget(ui->treeWidget);
-    setNotLoggedInVisible(true);
+    connect(treeWidget, &QTreeWidget::currentItemChanged, this, &EditorInstructors::on_treeWidget_currentItemChanged);
+
+    ui->verticalLayout_1->addWidget(treeWidget);
+
+    this->adminMode = adminMode;
+
+    preparationTreeWidget(/*ui->treeWidget*/);
+    //setNotLoggedInVisible(true);
    loadInstructorsFromDB();

    if(adminMode)
-        ui->btnArchive->click();
+        ui->btnArchive->click();    
 }

 EditorInstructors::~EditorInstructors()
@@ -72,7 +78,7 @@ void EditorInstructors::on_btnNewInstructor_clicked()

 void EditorInstructors::on_btnDeleteInstructor_clicked()
 {
-    QTreeWidgetItem *treeItemCurrent = ui->treeWidget->currentItem();
+    QTreeWidgetItem *treeItemCurrent = treeWidget->currentItem();

    if(treeItemCurrent != nullptr)
    {
@@ -88,6 +94,12 @@ void EditorInstructors::on_btnDeleteInstructor_clicked()
                return;
            }

+            if(dbLMS->isLoggedInInstructor(id))
+            {//Инструктор залогирован!
+                QMessageBox::critical(this, tr("Error!"), tr("You cannot delete a logged-in instructor."));
+                return;
+            }
+
            if(QMessageBox::warning(this, tr("Attention!"), tr("The deletion will be irrevocable.\nDelete it anyway?"), QMessageBox::Ok, QMessageBox::Cancel) == QMessageBox::Ok)
            {
                if(dbLMS->delInstructor(id))
@@ -99,7 +111,7 @@ void EditorInstructors::on_btnDeleteInstructor_clicked()

 void EditorInstructors::on_btnToOrFromArchive_clicked()
 {
-    QTreeWidgetItem *treeItemCurrent = ui->treeWidget->currentItem();
+    QTreeWidgetItem *treeItemCurrent = treeWidget->currentItem();

    if(treeItemCurrent != nullptr)
    {
@@ -124,6 +136,12 @@ void EditorInstructors::on_btnToOrFromArchive_clicked()
            }
            else
            {//Не Архивный
+                if(dbLMS->isLoggedInInstructor(id))
+                {//Инструктор залогирован!
+                    QMessageBox::critical(this, tr("Error!"), tr("You cannot archive a logged-in instructor."));
+                    return;
+                }
+
                instructor.setArchived(true);
                if(int id_edit = dbLMS->editInstructor(instructor))
                {
@@ -140,7 +158,7 @@ void EditorInstructors::on_btnToOrFromArchive_clicked()

 void EditorInstructors::on_btnEdit_clicked()
 {
-    QTreeWidgetItem *treeItemCurrent = ui->treeWidget->currentItem();
+    QTreeWidgetItem *treeItemCurrent = treeWidget->currentItem();

    if(treeItemCurrent == nullptr)
        return;
@@ -151,6 +169,12 @@ void EditorInstructors::on_btnEdit_clicked()

        int id = treeItemCurrent->text(ColumnsTreeInsructors::clmn_ID).toInt();

+        if(dbLMS->isLoggedInInstructor(id))
+        {//Инструктор залогирован!
+            QMessageBox::critical(this, tr("Error!"), tr("You cannot archive a logged-in instructor."));
+            return;
+        }
+
        DialogEditInstructor dlg(this);

        Instructor instructor = dbLMS->getInstructor(id);
@@ -225,10 +249,11 @@ void EditorInstructors::on_treeWidget_currentItemChanged(QTreeWidgetItem *curren

        ui->btnNewInstructor->setEnabled(true);        

-        if(dbLMS->isAdminInstructor(id))
-        {//Это Админ! Удалять/Архивировать нельзя!
+        if(dbLMS->isAdminInstructor(id) || dbLMS->isLoggedInInstructor(id))
+        {//Это Админ или залогированный! Удалять/Архивировать/Редактировать нельзя!
            ui->btnDeleteInstructor->setEnabled(false);
            ui->btnToOrFromArchive->setEnabled(false);
+            ui->btnEdit->setEnabled(false);
        }
        else
        {
@@ -238,9 +263,11 @@ void EditorInstructors::on_treeWidget_currentItemChanged(QTreeWidgetItem *curren
                ui->btnDeleteInstructor->setEnabled(true);
            else
                ui->btnDeleteInstructor->setEnabled(false);
+
+            ui->btnEdit->setEnabled(true);
        }

-        ui->btnEdit->setEnabled(true);
+        //ui->btnEdit->setEnabled(true);
        ui->btnArchive->setEnabled(true);
    }
 }
--- a/DB_IaT/InstructorsAndTrainees/instructors/editorinstructors.ui
+++ b/DB_IaT/InstructorsAndTrainees/instructors/editorinstructors.ui
@@ -10,6 +10,12 @@
    <height>800</height>
   </rect>
  </property>
+  <property name="font">
+   <font>
+    <family>Tahoma</family>
+    <pointsize>10</pointsize>
+   </font>
+  </property>
  <property name="windowTitle">
   <string>List instructors</string>
  </property>
@@ -18,7 +24,8 @@
    <widget class="QWidget" name="widget" native="true">
     <property name="font">
      <font>
-       <pointsize>12</pointsize>
+       <family>Tahoma</family>
+       <pointsize>10</pointsize>
      </font>
     </property>
     <property name="styleSheet">
@@ -28,32 +35,7 @@
      <item row="0" column="0">
       <layout class="QHBoxLayout" name="horizontalLayout_1">
        <item>
-         <layout class="QVBoxLayout" name="verticalLayout_1">
-          <item>
-           <widget class="QTreeWidget" name="treeWidget">
-            <property name="font">
-             <font>
-              <family>Tahoma</family>
-              <pointsize>10</pointsize>
-             </font>
-            </property>
-            <property name="iconSize">
-             <size>
-              <width>20</width>
-              <height>20</height>
-             </size>
-            </property>
-            <property name="columnCount">
-             <number>1</number>
-            </property>
-            <column>
-             <property name="text">
-              <string notr="true">1</string>
-             </property>
-            </column>
-           </widget>
-          </item>
-         </layout>
+         <layout class="QVBoxLayout" name="verticalLayout_1"/>
        </item>
        <item>
         <widget class="QWidget" name="widget_2" native="true">
@@ -72,6 +54,7 @@
          <property name="font">
           <font>
            <family>Tahoma</family>
+            <pointsize>10</pointsize>
           </font>
          </property>
          <property name="styleSheet">
--- a/DB_IaT/InstructorsAndTrainees/instructors/instructorsview.cpp
+++ b/DB_IaT/InstructorsAndTrainees/instructors/instructorsview.cpp
@@ -2,33 +2,72 @@
 #include <QTranslator>
 #include "instructorsview.h"

-InstructorsView::InstructorsView(InterfaceDataBaseLMS* dbLMS, TypeView type, bool adminMode, QWidget *parent):
-    CommonView(type, adminMode, parent),
-    dbLMS(dbLMS)
+InstructorsView::InstructorsView(InterfaceDataBaseLMS* dbLMS, TypeView type, QWidget *parent):
+    CommonView(dbLMS, type, parent)
 {

 }

-void InstructorsView::preparationTreeWidget(QTreeWidget* tree)
+void InstructorsView::slot_NeedUpdateUI(bool treeInstructor, bool treeTrainee)
 {
-    treeWidget = tree;
+    if(typeView == TypeView::onlyView)
+    {
+        if(adminMode)
+            archiveVisible = true;
+        else
+           archiveVisible = false;
+    }
+    else
+    {
+        archiveVisible = true;
+    }

+    if(adminMode)
+    {
+        treeWidget->setColumnHidden(ColumnsTreeInsructors::clmn_ID, false);
+        treeWidget->setColumnHidden(ColumnsTreeInsructors::clmn_Archived, false);
+    }
+    else
+    {
+        treeWidget->setColumnHidden(ColumnsTreeInsructors::clmn_ID, true);
+        treeWidget->setColumnHidden(ColumnsTreeInsructors::clmn_Archived, true);
+    }
+
+    updateButtons();
+
+    if(treeInstructor)
+        loadInstructorsFromDB();
+}
+
+void InstructorsView::preparationTreeWidget(/*QTreeWidget* tree*/)
+{
+    mtxTreeWidget.lock();
+
+    //treeWidget = tree;
+
+    /*
    if(treeWidget == nullptr)
+    {
+        mtxTreeWidget.unlock();
        return;
+    }
+    */

    treeWidget->setColumnCount(7);

    reSetHeadTreeWidget();

-    treeWidget->header()->setStyleSheet(QStringLiteral("font-size: 10pt;"));
+    //treeWidget->header()->setStyleSheet(QStringLiteral("font-size: 10pt;"));
+    treeWidget->setStyleSheet(QStringLiteral("font-size: 10pt;"
+                                             "font-family: Tahoma;"));

    treeWidget->setColumnWidth(ColumnsTreeInsructors::clmn_ID, 50);
    treeWidget->setColumnWidth(ColumnsTreeInsructors::clmn_Instructor, 250);
    treeWidget->setColumnWidth(ColumnsTreeInsructors::clmn_Login, 100);
    treeWidget->setColumnWidth(ColumnsTreeInsructors::clmn_Password, 100);
    treeWidget->setColumnWidth(ColumnsTreeInsructors::clmn_Administrator, 100);
-    treeWidget->setColumnWidth(ColumnsTreeInsructors::clmn_Archived, 80);
-    treeWidget->setColumnWidth(ColumnsTreeInsructors::clmn_Logged, 80);
+    treeWidget->setColumnWidth(ColumnsTreeInsructors::clmn_Archived, 100);
+    treeWidget->setColumnWidth(ColumnsTreeInsructors::clmn_Logged, 100);

    if(typeView == TypeView::onlyView)
    {//onlyView
@@ -37,13 +76,22 @@ void InstructorsView::preparationTreeWidget(QTreeWidget* tree)
        treeWidget->setColumnHidden(ColumnsTreeInsructors::clmn_Password, true);
        treeWidget->setColumnHidden(ColumnsTreeInsructors::clmn_Archived, true);
        treeWidget->setColumnHidden(ColumnsTreeInsructors::clmn_Administrator, true);
+
+        if(adminMode)
+            archiveVisible = true;
+        else
+           archiveVisible = false;
+
+        notLoggedInVisible = true;
    }
    else
    {//control
+        archiveVisible = true;
+        notLoggedInVisible = true;
+
        if(adminMode)
        {
-            archiveVisible = true;
-            notLoggedInVisible = true;
+
        }
        else
        {
@@ -54,16 +102,27 @@ void InstructorsView::preparationTreeWidget(QTreeWidget* tree)

    treeWidget->setSortingEnabled(true);
    treeWidget->sortItems(ColumnsTreeInsructors::clmn_Instructor, Qt::SortOrder::AscendingOrder);
+
+    mtxTreeWidget.unlock();
 }

 void InstructorsView::loadInstructorsFromDB()
 {
+    /*
    if(treeWidget == nullptr)
-        return;
+        return;*/
+
+    mtxTreeWidget.lock();

    //Обновление дерева
    treeWidget->clear();

+    if(!dbLMS->DBisConnected())
+    {
+        mtxTreeWidget.unlock();
+        return;
+    }
+
    //Инструкторы
    QList<Instructor> listInstructors;
    listInstructors = dbLMS->getListInstructors();
@@ -77,7 +136,8 @@ void InstructorsView::loadInstructorsFromDB()
        ItemInstructor->setText(ColumnsTreeInsructors::clmn_Password, instructor.getPassword());

        //Сокрытие пароля
-        ItemInstructor->setText(ColumnsTreeInsructors::clmn_Password, QStringLiteral("******"));
+        if(!adminMode)
+            ItemInstructor->setText(ColumnsTreeInsructors::clmn_Password, QStringLiteral("******"));

        if(instructor.getArchived())
        {//Архивный
@@ -132,6 +192,8 @@ void InstructorsView::loadInstructorsFromDB()
        if(item != nullptr)
            treeWidget->setCurrentItem(item);
    }
+
+    mtxTreeWidget.unlock();
 }

 void InstructorsView::reSetHeadTreeWidget()
--- a/DB_IaT/InstructorsAndTrainees/instructors/instructorsview.h
+++ b/DB_IaT/InstructorsAndTrainees/instructors/instructorsview.h
@@ -2,7 +2,6 @@
 #define INSTRUCTORSVIEW_H

 #include "instructorsAndTrainees_global.h"
-#include "interfacedatabaselms.h"
 #include "commonview.h"

 //Родительский класс представления БД Инструкторов (для просмотра и управления)
@@ -12,7 +11,7 @@ class InstructorsView: public CommonView
    Q_OBJECT

 public:
-    InstructorsView(InterfaceDataBaseLMS* dbLMS, TypeView type, bool adminMode, QWidget *parent = nullptr);
+    InstructorsView(InterfaceDataBaseLMS* dbLMS, TypeView type, QWidget *parent = nullptr);

 protected:
    enum ColumnsTreeInsructors{
@@ -25,14 +24,16 @@ protected:
        clmn_ID
    };

+public Q_SLOTS:
+    //Слот обработки сигнала необходимости обновления интерфейса
+    void slot_NeedUpdateUI(bool treeInstructor, bool treeTrainee);
+
 protected:
-    void preparationTreeWidget(QTreeWidget* tree);
+    virtual void updateButtons(){};
+    void preparationTreeWidget(/*QTreeWidget* tree*/);
    void loadInstructorsFromDB();

    void reSetHeadTreeWidget();
-
-protected:
-    InterfaceDataBaseLMS* dbLMS;
 };

 #endif // INSTRUCTORSVIEW_H
--- a/DB_IaT/InstructorsAndTrainees/instructors/viewerinstructors.cpp
+++ b/DB_IaT/InstructorsAndTrainees/instructors/viewerinstructors.cpp
@@ -3,24 +3,16 @@
 #include "viewerinstructors.h"
 #include "ui_viewerinstructors.h"

-ViewerInstructors::ViewerInstructors(InterfaceDataBaseLMS* db, bool adminMode, QWidget *parent) :
-    InstructorsView(db, CommonView::TypeView::onlyView, adminMode, parent),
+ViewerInstructors::ViewerInstructors(InterfaceDataBaseLMS* db, QWidget *parent) :
+    InstructorsView(db, CommonView::TypeView::onlyView, parent),
    ui(new Ui::ViewerInstructors)
 {
    ui->setupUi(this);

-    this->adminMode = adminMode;
+    ui->horizontalLayout_2->addWidget(treeWidget);

-    // Сделаем первоначальную инициализацию перевода для окна виджета
-    qtLanguageTranslator.load(QString(QStringLiteral("translations/InstructorsAndTrainees_")) + QString(QStringLiteral("ru_RU")), QStringLiteral("."));
-    qApp->installTranslator(&qtLanguageTranslator);
-
-    preparationTreeWidget(ui->treeWidget);
+    preparationTreeWidget(/*ui->treeWidget*/);
    setNotLoggedInVisible(true);
-    loadInstructorsFromDB();
-
-    if(! this->adminMode)
-        ui->btnEditorInstructors->setEnabled(false);
 }

 ViewerInstructors::~ViewerInstructors()
@@ -28,38 +20,22 @@ ViewerInstructors::~ViewerInstructors()
    delete ui;
 }

-void ViewerInstructors::setFilterInstructorLoggedIn(bool enabled)
-{
-    setNotLoggedInVisible(!enabled);
-    loadInstructorsFromDB();
-}
-
 void ViewerInstructors::changeEvent(QEvent *event)
 {
    // В случае получения события изменения языка приложения
    if (event->type() == QEvent::LanguageChange)
-    {
-        ui->retranslateUi(this);    // переведём окно заново
+    {// переведём окно заново
+        ui->retranslateUi(this);

        reSetHeadTreeWidget();
-        loadInstructorsFromDB();
+        //loadInstructorsFromDB();
+        slot_NeedUpdateUI(true, false);
    }
 }

-void ViewerInstructors::slot_LanguageChanged(QString language)
-{
-    qtLanguageTranslator.load(QString(QStringLiteral("translations/InstructorsAndTrainees_")) + language, QStringLiteral("."));
-    qApp->installTranslator(&qtLanguageTranslator);
-}
-
 void ViewerInstructors::on_btnEditorInstructors_clicked()
 {
-    if(! adminMode)
-    {
-        QMessageBox::warning(this, tr("Attention!"),
-                             tr("Only the Administrator has the right to edit instructors."));
-        return;
-    }
+    Q_EMIT signal_BlockAutorization(true);

    EditorInstructors editorInstructors(dbLMS, adminMode);
    QDialog* dialog = new QDialog(this);
@@ -70,4 +46,18 @@ void ViewerInstructors::on_btnEditorInstructors_clicked()
    dialog->exec();

    loadInstructorsFromDB();
+
+    Q_EMIT signal_BlockAutorization(false);
+}
+
+void ViewerInstructors::updateButtons()
+{
+    if(adminMode && authComplited)
+    {
+        ui->btnEditorInstructors->setEnabled(true);
+    }
+    else
+    {
+        ui->btnEditorInstructors->setEnabled(false);
+    }
 }
--- a/DB_IaT/InstructorsAndTrainees/instructors/viewerinstructors.h
+++ b/DB_IaT/InstructorsAndTrainees/instructors/viewerinstructors.h
@@ -1,9 +1,6 @@
 #ifndef INSTRUCTORSWIDGET_H
 #define INSTRUCTORSWIDGET_H

-#include <QWidget>
-#include "instructorsAndTrainees_global.h"
-#include "interfacedatabaselms.h"
 #include "instructorsview.h"

 namespace Ui {
@@ -17,23 +14,22 @@ class ViewerInstructors : public InstructorsView
    Q_OBJECT

 public:
-    explicit ViewerInstructors(InterfaceDataBaseLMS* db, bool adminMode, QWidget *parent = nullptr);
+    explicit ViewerInstructors(InterfaceDataBaseLMS* db, QWidget *parent = nullptr);
    ~ViewerInstructors();

 protected:
-    // Метод получения событий
-    // В нём будет производиться проверка события смены перевода приложения
    void changeEvent(QEvent * event) override;

-public Q_SLOTS:
-    void slot_LanguageChanged(QString language);
+Q_SIGNALS:
+    //сигнал о блокировке авторизации
+    void signal_BlockAutorization(bool block);

-public:
-    void setFilterInstructorLoggedIn(bool enabled);
-
-private slots:
+private Q_SLOTS:
    void on_btnEditorInstructors_clicked();

+private:
+    void updateButtons() override;
+
 private:
    Ui::ViewerInstructors *ui;
 };
--- a/DB_IaT/InstructorsAndTrainees/instructors/viewerinstructors.ui
+++ b/DB_IaT/InstructorsAndTrainees/instructors/viewerinstructors.ui
@@ -13,6 +13,7 @@
  <property name="font">
   <font>
    <family>Tahoma</family>
+    <pointsize>10</pointsize>
   </font>
  </property>
  <property name="windowTitle">
@@ -38,6 +39,9 @@
           <layout class="QVBoxLayout" name="verticalLayout">
            <item>
             <widget class="QToolButton" name="btnEditorInstructors">
+              <property name="enabled">
+               <bool>false</bool>
+              </property>
              <property name="minimumSize">
               <size>
                <width>130</width>
@@ -77,27 +81,6 @@
            </item>
           </layout>
          </item>
-          <item>
-           <widget class="QTreeWidget" name="treeWidget">
-            <property name="font">
-             <font>
-              <family>Tahoma</family>
-              <pointsize>10</pointsize>
-             </font>
-            </property>
-            <property name="iconSize">
-             <size>
-              <width>20</width>
-              <height>20</height>
-             </size>
-            </property>
-            <column>
-             <property name="text">
-              <string notr="true">1</string>
-             </property>
-            </column>
-           </widget>
-          </item>
         </layout>
        </item>
       </layout>
--- a/DB_IaT/InstructorsAndTrainees/instructorsandtraineeswidget.cpp
+++ b/DB_IaT/InstructorsAndTrainees/instructorsandtraineeswidget.cpp
@@ -6,40 +6,91 @@
 InstructorsAndTraineesWidget::InstructorsAndTraineesWidget(QWidget *parent) :
    QWidget(parent),
    ui(new Ui::InstructorsAndTraineesWidget),
+    dbLMS(nullptr),
+    viewerTrainees(nullptr),
+    viewerInstructors(nullptr),
    adminMode(false),
    loginInstructorLoggedInLocal(QStringLiteral(""))
 {
    ui->setupUi(this);

-    dbLMS = new InterfaceDataBaseLMS();
+    dbLMS = new InterfaceDataBaseLMS(this);

-    //Авторизация Инструктора локальная (Администратора)
-    authorizationInstructorLocal(this);
+    connect(this, &InstructorsAndTraineesWidget::signal_LanguageChanged, dbLMS, &InterfaceDataBaseLMS::slot_LanguageChanged);

-    m_viewerTrainees = new ViewerTrainees(dbLMS, adminMode);
-    m_viewerInstructors = new ViewerInstructors(dbLMS, adminMode);
+    viewerTrainees = new ViewerTrainees(dbLMS);
+    viewerInstructors = new ViewerInstructors(dbLMS);

-    ui->verticalLayout->addWidget(m_viewerTrainees);
-    ui->verticalLayout->addWidget(m_viewerInstructors);
+    connect(this, &InstructorsAndTraineesWidget::signal_NeedUpdateUI, viewerTrainees, &ViewerTrainees::slot_NeedUpdateUI);
+    connect(this, &InstructorsAndTraineesWidget::signal_NeedUpdateUI, viewerInstructors, &ViewerInstructors::slot_NeedUpdateUI);

-    m_viewerTrainees->setMinimumSize(1600, 700);
-    m_viewerInstructors->setMinimumSize(1600, 400);
+    connect(viewerInstructors, &ViewerInstructors::signal_BlockAutorization, this, &InstructorsAndTraineesWidget::signal_BlockAutorization);
+    connect(viewerTrainees, &ViewerTrainees::signal_BlockAutorization, this, &InstructorsAndTraineesWidget::signal_BlockAutorization);
+
+    connect(viewerTrainees, &ViewerTrainees::signal_traineeSelected, this, &InstructorsAndTraineesWidget::signal_traineeSelected);
+    connect(this, &InstructorsAndTraineesWidget::signal_tabMessengerChanged, viewerTrainees, &ViewerTrainees::slot_tabMessengerChanged);
+
+    ui->verticalLayout->addWidget(viewerTrainees);
+    ui->verticalLayout->addWidget(viewerInstructors);
+
+    viewerTrainees->setMinimumSize(1600, 500);
+    viewerInstructors->setMinimumSize(1600, 400);
+
+    ui->btnAuthorizationInstructor->setEnabled(false);
 }

 InstructorsAndTraineesWidget::~InstructorsAndTraineesWidget()
 {
-    deAuthorizationInstructor(loginInstructorLoggedInLocal);
+    if(authorizationIsCompleted())
+        deAuthorizationInstructor(loginInstructorLoggedInLocal);

-    delete m_viewerInstructors;
-    delete m_viewerTrainees;
+    if(dbLMS->DBisConnected())
+    {
+        dbLMS->deAuthorizationAllInstructors();
+        dbLMS->deAuthorizationAllTrainees();
+
+        dbLMS->DisConnectionFromDB();
+    }
+
+    delete viewerInstructors;
+    delete viewerTrainees;
    delete dbLMS;
    delete ui;
 }

+void InstructorsAndTraineesWidget::changeEvent(QEvent *event)
+{
+    // В случае получения события изменения языка приложения
+    if (event->type() == QEvent::LanguageChange)
+    {// переведём окно заново
+        ui->retranslateUi(this);
+
+        if(ui->btnAuthorizationInstructor->isChecked())
+            ui->btnAuthorizationInstructor->setText(tr("Deauthorization Instructor"));
+        else
+            ui->btnAuthorizationInstructor->setText(tr("Authorization Instructor"));
+
+        if(ui->btnConnectionToDB->isChecked())
+            ui->btnConnectionToDB->setText(tr("Disconnection DB"));
+        else
+            ui->btnConnectionToDB->setText(tr("Connection DB"));
+
+        updateLabelLoggedInInstructor();
+    }
+}
+
+void InstructorsAndTraineesWidget::slot_LanguageChanged(QString language)
+{
+    qtLanguageTranslator.load(QString(QStringLiteral("translations/InstructorsAndTraineesWidget_")) + language, QStringLiteral("."));
+    qApp->installTranslator(&qtLanguageTranslator);
+
+    Q_EMIT signal_LanguageChanged(language);
+}
+
 bool InstructorsAndTraineesWidget::authorizationInstructorLocal(QWidget* parent)
 {
    DialogAuthorizationInstructor dlg(parent);
-    dlg.setWindowTitle(tr("Instructor authorithation"));
+    dlg.setWindowTitle(tr("Instructor authorization"));

    do
    {
@@ -50,12 +101,21 @@ bool InstructorsAndTraineesWidget::authorizationInstructorLocal(QWidget* parent)
            QString login = dlg.getLogin();
            QString password = dlg.getPassword();

-            if(dbLMS->AuthorizationInstructor(login, password))
+            if(authorizationInstructor(login, password))
            {
                loginInstructorLoggedInLocal = login;

                if(login == QStringLiteral("admin"))
                    adminMode = true;
+                else
+                    adminMode = false;
+
+                viewerInstructors->setAdminMode(adminMode);
+                viewerTrainees->setAdminMode(adminMode);
+                viewerInstructors->setAuthComplited(true);
+                viewerTrainees->setAuthComplited(true);
+
+                Q_EMIT signal_NeedUpdateUI(true, true);

                QMessageBox::information(parent, tr("Instructor authorization"), tr("Successfully!"));

@@ -87,20 +147,262 @@ bool InstructorsAndTraineesWidget::authorizationIsCompleted()

 bool InstructorsAndTraineesWidget::authorizationTrainee(QString login, QString password, QString classroom_name, QString computer_name)
 {
-    return dbLMS->AuthorizationTrainee(login, password, classroom_name, computer_name);
+    mtxAccess.lock();
+
+    if(! dbLMS->DBisConnected())
+    {
+        mtxAccess.unlock();
+        return false;
+    }
+
+    Q_EMIT signal_BlockAutorization(true);
+
+    bool res = dbLMS->AuthorizationTrainee(login, password, classroom_name, computer_name);
+
+    Q_EMIT signal_BlockAutorization(false);
+
+    if(res)
+        Q_EMIT signal_NeedUpdateUI(false, true);
+
+     mtxAccess.unlock();
+     return res;
 }

 bool InstructorsAndTraineesWidget::deAuthorizationTrainee(QString login)
 {
-    return dbLMS->deAuthorizationTrainee(login);
+    mtxAccess.lock();
+
+    if(! dbLMS->DBisConnected())
+    {
+        mtxAccess.unlock();
+        return false;
+    }
+
+    Q_EMIT signal_BlockAutorization(true);
+
+    bool res = dbLMS->deAuthorizationTrainee(login);
+
+    Q_EMIT signal_BlockAutorization(false);
+
+    if(res)
+        Q_EMIT signal_NeedUpdateUI(false, true);
+
+    mtxAccess.unlock();
+    return res;
+}
+
+QString InstructorsAndTraineesWidget::getNameTraineeByLogin(QString login)
+{
+    mtxAccess.lock();
+
+    if(! dbLMS->DBisConnected())
+    {
+        mtxAccess.unlock();
+        return QStringLiteral("");
+    }
+
+    QString res =  dbLMS->getNameTraineeByLogin(login);
+
+    mtxAccess.unlock();
+    return res;
 }

 bool InstructorsAndTraineesWidget::authorizationInstructor(QString login, QString password)
 {
-    return dbLMS->AuthorizationInstructor(login, password);
+    mtxAccess.lock();
+
+    if(! dbLMS->DBisConnected())
+    {
+        mtxAccess.unlock();
+        return false;
+    }
+
+    Q_EMIT signal_BlockAutorization(true);
+
+    bool res = dbLMS->AuthorizationInstructor(login, password);
+
+    Q_EMIT signal_BlockAutorization(false);
+
+    if(res)
+        Q_EMIT signal_NeedUpdateUI(true, false);
+
+    mtxAccess.unlock();
+    return res;
 }

 bool InstructorsAndTraineesWidget::deAuthorizationInstructor(QString login)
 {
-    return dbLMS->deAuthorizationInstructor(login);
+    mtxAccess.lock();
+
+    if(! dbLMS->DBisConnected())
+    {
+        mtxAccess.unlock();
+        return false;
+    }
+
+    Q_EMIT signal_BlockAutorization(true);
+
+    bool res = dbLMS->deAuthorizationInstructor(login);
+
+    Q_EMIT signal_BlockAutorization(false);
+
+    if(res)
+    {
+        if(loginInstructorLoggedInLocal == login)
+        {
+            loginInstructorLoggedInLocal = QStringLiteral("");
+            adminMode = false;
+
+            viewerInstructors->setAdminMode(adminMode);
+            viewerTrainees->setAdminMode(adminMode);
+            viewerInstructors->setAuthComplited(false);
+            viewerTrainees->setAuthComplited(false);
+
+            Q_EMIT signal_NeedUpdateUI(true, false);
+        }
+        else
+            Q_EMIT signal_NeedUpdateUI(true, false);
+    }
+
+    mtxAccess.unlock();
+    return res;
+}
+
+QString InstructorsAndTraineesWidget::getNameInstructorByLogin(QString login)
+{
+    mtxAccess.lock();
+
+    if(! dbLMS->DBisConnected())
+    {
+        mtxAccess.unlock();
+        return QStringLiteral("");
+    }
+
+    QString res = dbLMS->getNameInstructorByLogin(login);
+
+    mtxAccess.unlock();
+    return res;
+}
+
+QString InstructorsAndTraineesWidget::getMainInstructorName()
+{
+    mtxAccess.lock();
+
+    if(! dbLMS->DBisConnected())
+    {
+        mtxAccess.unlock();
+        return QStringLiteral("");
+    }
+
+    QString res = dbLMS->getNameInstructorByLogin(loginInstructorLoggedInLocal);
+
+    mtxAccess.unlock();
+    return res;
+}
+
+QList<Trainee> InstructorsAndTraineesWidget::getListTrainees()
+{
+    return dbLMS->getListTrainees();
+}
+
+void InstructorsAndTraineesWidget::on_btnConnectionToDB_clicked()
+{    
+    mtxAccess.lock();
+
+    bool stateIsChecked = ui->btnConnectionToDB->isChecked();
+
+    if(stateIsChecked)
+    {//Подключение к БД
+        if(! dbLMS->DBisConnected())
+        {
+            if(dbLMS->ConnectionToDB())
+            {
+                ui->btnConnectionToDB->setText(tr("Disconnection DB"));
+                ui->btnAuthorizationInstructor->setEnabled(true);
+
+                Q_EMIT signal_NeedUpdateUI(true, true);
+
+                Q_EMIT signal_BlockAutorization(false);
+
+                Q_EMIT signal_InitMessanger(dbLMS->getListTrainees());
+            }
+        }
+    }
+    else
+    {//Отключение от БД
+        bool stateIsCheckedAuthorization = ui->btnAuthorizationInstructor->isChecked();
+        if(stateIsCheckedAuthorization)
+            ui->btnAuthorizationInstructor->click();
+
+        if(dbLMS->DBisConnected())
+        {
+            Q_EMIT signal_BlockAutorization(true);
+
+            dbLMS->DisConnectionFromDB();
+            ui->btnConnectionToDB->setText(tr("Connection DB"));
+
+            ui->btnAuthorizationInstructor->setEnabled(false);
+
+            Q_EMIT signal_NeedUpdateUI(true, true);
+        }
+    }
+
+    mtxAccess.unlock();
+}
+
+void InstructorsAndTraineesWidget::on_btnAuthorizationInstructor_clicked()
+{
+    bool stateIsChecked = ui->btnAuthorizationInstructor->isChecked();
+
+    if(stateIsChecked)
+    {//Авторизация Инструктора локальная (Администратора)
+        if(authorizationInstructorLocal(this))
+        {
+            ui->btnAuthorizationInstructor->setText(tr("Deauthorization Instructor"));
+
+            updateLabelLoggedInInstructor();
+
+            Q_EMIT signal_NeedUpdateUI(true, true);
+        }
+        else
+            ui->btnAuthorizationInstructor->setChecked(false);
+    }
+    else
+    {//ДеАвторизация Инструктора локальная (Администратора)
+        if(authorizationIsCompleted())
+        {
+            if(deAuthorizationInstructor(loginInstructorLoggedInLocal))
+            {
+                ui->btnAuthorizationInstructor->setText(tr("Authorization Instructor"));
+
+                updateLabelLoggedInInstructor();
+
+                Q_EMIT signal_NeedUpdateUI(true, true);
+            }
+        }
+    }
+}
+
+void InstructorsAndTraineesWidget::updateLabelLoggedInInstructor()
+{
+    mtxAccess.lock();
+
+    if(! dbLMS->DBisConnected())
+    {
+        mtxAccess.unlock();
+        return;
+    }
+
+    if(authorizationIsCompleted())
+    {
+        QString nameLoggedInInstructor = QString("%1 (%2)").arg(
+                    dbLMS->getNameInstructorByLogin(loginInstructorLoggedInLocal), loginInstructorLoggedInLocal);
+        ui->lblLoggedInInstructor->setText(nameLoggedInInstructor);
+    }
+    else
+    {
+        ui->lblLoggedInInstructor->setText(tr("none"));
+    }
+
+    mtxAccess.unlock();
 }
--- a/DB_IaT/InstructorsAndTrainees/instructorsandtraineeswidget.h
+++ b/DB_IaT/InstructorsAndTrainees/instructorsandtraineeswidget.h
@@ -2,6 +2,7 @@
 #define INSTRUCTORSANDTRAINEESWIDGET_H

 #include <QWidget>
+#include <QTranslator>
 #include "instructorsAndTrainees_global.h"
 #include "viewertrainees.h"
 #include "viewerinstructors.h"
@@ -19,29 +20,71 @@ public:
    explicit InstructorsAndTraineesWidget(QWidget *parent = nullptr);
    ~InstructorsAndTraineesWidget();

+private:
+    void changeEvent(QEvent * event) override;
+
+public Q_SLOTS:
+    //Слот обработки смены языка
+    void slot_LanguageChanged(QString language);
+
+Q_SIGNALS:
+    //сигнал об изменении языка интерфейса
+    void signal_LanguageChanged(QString language);
+
+    //сигнал о необходимости обновления интерфейса
+    void signal_NeedUpdateUI(bool treeInstructor, bool treeTrainee);
+
+    //сигнал о блокировке авторизации
+    void signal_BlockAutorization(bool block);
+
+    //сигнал о выборе обучаемого (в списке)
+    void signal_traineeSelected(QString login);
+
+    //сигнал об изменении вкладки диалога (в мессенджере)
+    void signal_tabMessengerChanged(QString login);
+
+    //сигнал об инициализации мессенджера
+    void signal_InitMessanger(QList<Trainee> listTrainees);
+
 public:
-    //Авторизация инструктора локальная
-    bool authorizationInstructorLocal(QWidget* parent = nullptr);
-    bool authorizationIsCompleted();
+    QString getMainInstructorName();
+    QList<Trainee> getListTrainees();

    //Авторизация обучаемого на клиенте
    bool authorizationTrainee(QString login, QString password, QString classroom_name = QStringLiteral(""), QString computer_name = QStringLiteral(""));
    bool deAuthorizationTrainee(QString login);
+    QString getNameTraineeByLogin(QString login);

    //Авторизация инструктора на клиенте
    bool authorizationInstructor(QString login, QString password);
    bool deAuthorizationInstructor(QString login);
+    QString getNameInstructorByLogin(QString login);
+
+private Q_SLOTS:
+    void on_btnConnectionToDB_clicked();
+    void on_btnAuthorizationInstructor_clicked();
+
+private:
+    void updateLabelLoggedInInstructor();
+
+    //Авторизация инструктора локальная
+    bool authorizationInstructorLocal(QWidget* parent = nullptr);
+    bool authorizationIsCompleted();

 private:
    Ui::InstructorsAndTraineesWidget *ui;

    InterfaceDataBaseLMS* dbLMS;

-    ViewerTrainees* m_viewerTrainees;
-    ViewerInstructors* m_viewerInstructors;
+    ViewerTrainees* viewerTrainees;
+    ViewerInstructors* viewerInstructors;

    bool adminMode;
    QString loginInstructorLoggedInLocal;
+
+    QTranslator qtLanguageTranslator;
+
+    QMutex mtxAccess;
 };

 #endif // INSTRUCTORSANDTRAINEESWIDGET_H
--- a/DB_IaT/InstructorsAndTrainees/instructorsandtraineeswidget.ui
+++ b/DB_IaT/InstructorsAndTrainees/instructorsandtraineeswidget.ui
@@ -6,10 +6,16 @@
   <rect>
    <x>0</x>
    <y>0</y>
-    <width>400</width>
-    <height>300</height>
+    <width>1000</width>
+    <height>800</height>
   </rect>
  </property>
+  <property name="font">
+   <font>
+    <family>Tahoma</family>
+    <pointsize>10</pointsize>
+   </font>
+  </property>
  <property name="windowTitle">
   <string>Form</string>
  </property>
@@ -20,6 +26,7 @@
      <widget class="QGroupBox" name="groupBox">
       <property name="font">
        <font>
+         <family>Tahoma</family>
         <pointsize>10</pointsize>
        </font>
       </property>
@@ -27,9 +34,102 @@
        <string>Database LMS</string>
       </property>
       <layout class="QGridLayout" name="gridLayout_2">
-        <item row="0" column="0">
+        <item row="1" column="0">
         <layout class="QVBoxLayout" name="verticalLayout"/>
        </item>
+        <item row="0" column="0">
+         <layout class="QVBoxLayout" name="verticalLayout_2">
+          <item>
+           <layout class="QHBoxLayout" name="horizontalLayout_2">
+            <item>
+             <widget class="QToolButton" name="btnConnectionToDB">
+              <property name="minimumSize">
+               <size>
+                <width>130</width>
+                <height>58</height>
+               </size>
+              </property>
+              <property name="text">
+               <string>Connection to DB</string>
+              </property>
+              <property name="icon">
+               <iconset resource="resources.qrc">
+                <normaloff>:/icons/connectDB.png</normaloff>:/icons/connectDB.png</iconset>
+              </property>
+              <property name="iconSize">
+               <size>
+                <width>32</width>
+                <height>32</height>
+               </size>
+              </property>
+              <property name="checkable">
+               <bool>true</bool>
+              </property>
+              <property name="toolButtonStyle">
+               <enum>Qt::ToolButtonTextUnderIcon</enum>
+              </property>
+             </widget>
+            </item>
+            <item>
+             <widget class="QToolButton" name="btnAuthorizationInstructor">
+              <property name="minimumSize">
+               <size>
+                <width>140</width>
+                <height>58</height>
+               </size>
+              </property>
+              <property name="text">
+               <string>Authorization Instructor</string>
+              </property>
+              <property name="icon">
+               <iconset resource="resources.qrc">
+                <normaloff>:/icons/login-user.png</normaloff>:/icons/login-user.png</iconset>
+              </property>
+              <property name="iconSize">
+               <size>
+                <width>32</width>
+                <height>32</height>
+               </size>
+              </property>
+              <property name="checkable">
+               <bool>true</bool>
+              </property>
+              <property name="toolButtonStyle">
+               <enum>Qt::ToolButtonTextUnderIcon</enum>
+              </property>
+             </widget>
+            </item>
+            <item>
+             <spacer name="horizontalSpacer">
+              <property name="orientation">
+               <enum>Qt::Horizontal</enum>
+              </property>
+              <property name="sizeHint" stdset="0">
+               <size>
+                <width>40</width>
+                <height>20</height>
+               </size>
+              </property>
+             </spacer>
+            </item>
+            <item>
+             <widget class="QLabel" name="label">
+              <property name="text">
+               <string>Logged in instructor:</string>
+              </property>
+             </widget>
+            </item>
+            <item>
+             <widget class="QLabel" name="lblLoggedInInstructor">
+              <property name="text">
+               <string>none</string>
+              </property>
+             </widget>
+            </item>
+           </layout>
+          </item>
+         </layout>
+        </item>
       </layout>
      </widget>
     </item>
@@ -37,6 +137,8 @@
   </item>
  </layout>
 </widget>
- <resources/>
+ <resources>
+  <include location="resources.qrc"/>
+ </resources>
 <connections/>
 </ui>
--- a/DB_IaT/InstructorsAndTrainees/resources.qrc
+++ b/DB_IaT/InstructorsAndTrainees/resources.qrc
@@ -23,5 +23,7 @@
        <file>icons/admin.png</file>
        <file>icons/DB-instructors.png</file>
        <file>icons/DB-trainees.png</file>
+        <file>icons/connectDB.png</file>
+        <file>icons/login-user.png</file>
    </qresource>
 </RCC>
--- a/DB_IaT/InstructorsAndTrainees/trainees/dialogeditgroup.ui
+++ b/DB_IaT/InstructorsAndTrainees/trainees/dialogeditgroup.ui
@@ -13,6 +13,7 @@
  <property name="font">
   <font>
    <family>Tahoma</family>
+    <pointsize>10</pointsize>
   </font>
  </property>
  <property name="windowTitle">
@@ -29,13 +30,24 @@
      <layout class="QHBoxLayout" name="horizontalLayout">
       <item>
        <widget class="QLabel" name="label_2">
+         <property name="font">
+          <font>
+           <pointsize>10</pointsize>
+          </font>
+         </property>
         <property name="text">
          <string>Name</string>
         </property>
        </widget>
       </item>
       <item>
-        <widget class="QLineEdit" name="editName"/>
+        <widget class="QLineEdit" name="editName">
+         <property name="font">
+          <font>
+           <pointsize>10</pointsize>
+          </font>
+         </property>
+        </widget>
       </item>
      </layout>
     </item>
@@ -43,6 +55,11 @@
   </item>
   <item>
    <widget class="QDialogButtonBox" name="buttonBox">
+     <property name="font">
+      <font>
+       <pointsize>10</pointsize>
+      </font>
+     </property>
     <property name="locale">
      <locale language="English" country="UnitedStates"/>
     </property>
--- a/DB_IaT/InstructorsAndTrainees/trainees/dialogedittrainee.ui
+++ b/DB_IaT/InstructorsAndTrainees/trainees/dialogedittrainee.ui
@@ -13,6 +13,7 @@
  <property name="font">
   <font>
    <family>Tahoma</family>
+    <pointsize>10</pointsize>
   </font>
  </property>
  <property name="windowTitle">
@@ -25,6 +26,11 @@
  <layout class="QGridLayout" name="gridLayout">
   <item row="1" column="0">
    <widget class="QDialogButtonBox" name="buttonBox">
+     <property name="font">
+      <font>
+       <pointsize>10</pointsize>
+      </font>
+     </property>
     <property name="locale">
      <locale language="English" country="UnitedStates"/>
     </property>
@@ -42,13 +48,24 @@
      <layout class="QHBoxLayout" name="horizontalLayout">
       <item>
        <widget class="QLabel" name="label_2">
+         <property name="font">
+          <font>
+           <pointsize>10</pointsize>
+          </font>
+         </property>
         <property name="text">
          <string>Name</string>
         </property>
        </widget>
       </item>
       <item>
-        <widget class="QLineEdit" name="editName"/>
+        <widget class="QLineEdit" name="editName">
+         <property name="font">
+          <font>
+           <pointsize>10</pointsize>
+          </font>
+         </property>
+        </widget>
       </item>
      </layout>
     </item>
@@ -56,13 +73,24 @@
      <layout class="QHBoxLayout" name="horizontalLayout_2">
       <item>
        <widget class="QLabel" name="label_3">
+         <property name="font">
+          <font>
+           <pointsize>10</pointsize>
+          </font>
+         </property>
         <property name="text">
          <string>Login</string>
         </property>
        </widget>
       </item>
       <item>
-        <widget class="QLineEdit" name="editLogin"/>
+        <widget class="QLineEdit" name="editLogin">
+         <property name="font">
+          <font>
+           <pointsize>10</pointsize>
+          </font>
+         </property>
+        </widget>
       </item>
      </layout>
     </item>
@@ -70,13 +98,24 @@
      <layout class="QHBoxLayout" name="horizontalLayout_3">
       <item>
        <widget class="QLabel" name="label_4">
+         <property name="font">
+          <font>
+           <pointsize>10</pointsize>
+          </font>
+         </property>
         <property name="text">
          <string>Password</string>
         </property>
        </widget>
       </item>
       <item>
-        <widget class="QLineEdit" name="editPassword"/>
+        <widget class="QLineEdit" name="editPassword">
+         <property name="font">
+          <font>
+           <pointsize>10</pointsize>
+          </font>
+         </property>
+        </widget>
       </item>
      </layout>
     </item>
@@ -87,6 +126,11 @@
         <property name="enabled">
          <bool>false</bool>
         </property>
+         <property name="font">
+          <font>
+           <pointsize>10</pointsize>
+          </font>
+         </property>
         <property name="text">
          <string>Archived</string>
         </property>
@@ -109,6 +153,11 @@
         <property name="enabled">
          <bool>false</bool>
         </property>
+         <property name="font">
+          <font>
+           <pointsize>10</pointsize>
+          </font>
+         </property>
         <property name="text">
          <string>Logged</string>
         </property>
--- a/DB_IaT/InstructorsAndTrainees/trainees/editortrainees.cpp
+++ b/DB_IaT/InstructorsAndTrainees/trainees/editortrainees.cpp
@@ -5,13 +5,19 @@
 #include "dialogedittrainee.h"

 EditorTrainees::EditorTrainees(InterfaceDataBaseLMS* dbLMS, bool adminMode, QWidget *parent) :
-    TraineesView(dbLMS, CommonView::TypeView::control, adminMode, parent),
+    TraineesView(dbLMS, CommonView::TypeView::control, parent),
    ui(new Ui::EditorTrainees)
 {
    ui->setupUi((QDialog*)this);

-    preparationTreeWidget(ui->treeWidget);
-    setNotLoggedInVisible(true);
+    connect(treeWidget, &QTreeWidget::currentItemChanged, this, &EditorTrainees::on_treeWidget_currentItemChanged);
+
+    ui->verticalLayout_1->addWidget(treeWidget);
+
+    this->adminMode = adminMode;
+
+    preparationTreeWidget(/*ui->treeWidget*/);
+    //setNotLoggedInVisible(true);
    loadTraineesFromDB();

    if(adminMode)
@@ -74,7 +80,7 @@ void EditorTrainees::on_btnNewGroup_clicked()

 void EditorTrainees::on_btnDeleteGroup_clicked()
 {
-    QTreeWidgetItem *treeItemCurrent = ui->treeWidget->currentItem();
+    QTreeWidgetItem *treeItemCurrent = treeWidget->currentItem();

    if(treeItemCurrent != nullptr)
    {
@@ -90,13 +96,16 @@ void EditorTrainees::on_btnDeleteGroup_clicked()
            }
            else
            {//Пустая группа
-                if(int id = dbLMS->delGroup(id_group))
-                {//Удалено
-                    loadTraineesFromDB();
-                }
-                else
+                if(QMessageBox::warning(this, tr("Attention!"), tr("The deletion will be irrevocable.\nDelete anyway?"), QMessageBox::Ok, QMessageBox::Cancel) == QMessageBox::Ok)
                {
-                    //Ошибка удаления
+                    if(int id = dbLMS->delGroup(id_group))
+                    {//Удалено
+                        loadTraineesFromDB();
+                    }
+                    else
+                    {
+                        //Ошибка удаления
+                    }
                }
            }
        }
@@ -105,7 +114,7 @@ void EditorTrainees::on_btnDeleteGroup_clicked()

 void EditorTrainees::on_btnNewTrainee_clicked()
 {
-    QTreeWidgetItem *treeItemCurrent = ui->treeWidget->currentItem();
+    QTreeWidgetItem *treeItemCurrent = treeWidget->currentItem();

    if(treeItemCurrent != nullptr)
    {
@@ -168,7 +177,7 @@ void EditorTrainees::on_btnNewTrainee_clicked()

 void EditorTrainees::on_btnDeleteTrainee_clicked()
 {
-    QTreeWidgetItem *treeItemCurrent = ui->treeWidget->currentItem();
+    QTreeWidgetItem *treeItemCurrent = treeWidget->currentItem();

    if(treeItemCurrent != nullptr)
    {
@@ -179,6 +188,12 @@ void EditorTrainees::on_btnDeleteTrainee_clicked()
            int id_trainee = treeItemCurrent->text(ColumnsTreeTrainees::clmn_ID).toInt();
            int id_group = treeItemParent->text(ColumnsTreeTrainees::clmn_ID).toInt();

+            if(dbLMS->isLoggedInTrainee(id_trainee))
+            {//Обучаемый залогирован!
+                QMessageBox::critical(this, tr("Error!"), tr("You cannot delete a logged-in trainee."));
+                return;
+            }
+
            if(QMessageBox::warning(this, tr("Attention!"), tr("The deletion will be irrevocable.\nDelete anyway?"), QMessageBox::Ok, QMessageBox::Cancel) == QMessageBox::Ok)
            {
                if(int id = dbLMS->delTrainee(id_trainee))
@@ -197,7 +212,7 @@ void EditorTrainees::on_btnDeleteTrainee_clicked()

 void EditorTrainees::on_btnToOrFromArchiveTrainee_clicked()
 {
-    QTreeWidgetItem *treeItemCurrent = ui->treeWidget->currentItem();
+    QTreeWidgetItem *treeItemCurrent = treeWidget->currentItem();

    if(treeItemCurrent != nullptr)
    {
@@ -225,7 +240,13 @@ void EditorTrainees::on_btnToOrFromArchiveTrainee_clicked()
                }
            }
            else
-            {//Не Архивный
+            {//Не Архивный                
+                if(dbLMS->isLoggedInTrainee(id_trainee))
+                {//Обучаемый залогирован!
+                    QMessageBox::critical(this, tr("Error!"), tr("You cannot archive a logged-in trainee."));
+                    return;
+                }
+
                trainee.setArchived(true);
                if(int id = dbLMS->editTrainee(trainee))
                {//Отредактировано
@@ -246,7 +267,7 @@ void EditorTrainees::on_btnToOrFromArchiveTrainee_clicked()

 void EditorTrainees::on_btnEdit_clicked()
 {
-    QTreeWidgetItem *treeItemCurrent = ui->treeWidget->currentItem();
+    QTreeWidgetItem *treeItemCurrent = treeWidget->currentItem();

    if(treeItemCurrent == nullptr)
        return;
@@ -301,6 +322,12 @@ void EditorTrainees::on_btnEdit_clicked()

        int id_trainee = treeItemCurrent->text(ColumnsTreeTrainees::clmn_ID).toInt();

+        if(dbLMS->isLoggedInTrainee(id_trainee))
+        {//Обучаемый залогирован!
+            QMessageBox::critical(this, tr("Error!"), tr("You cannot archive a logged-in trainee."));
+            return;
+        }
+
        DialogEditTrainee dlg(this);

        Trainee trainee = dbLMS->getTrainee(id_trainee);
@@ -399,22 +426,40 @@ void EditorTrainees::on_treeWidget_currentItemChanged(QTreeWidgetItem *current,

        if(dbLMS->isArchivedTrainee(id_trainee))
        {//Архивный
-            ui->btnDeleteTrainee->setEnabled(true);
+            //ui->btnDeleteTrainee->setEnabled(true);

            ui->btnToOrFromArchiveTrainee->setText(tr("From archive"));
            ui->btnToOrFromArchiveTrainee->setIcon(QIcon(QStringLiteral(":/icons/traineeFromArchive.png")));
        }
        else
        {//Не Архивный
-            ui->btnDeleteTrainee->setEnabled(false);
+            //ui->btnDeleteTrainee->setEnabled(false);

            ui->btnToOrFromArchiveTrainee->setText(tr("To archive"));
            ui->btnToOrFromArchiveTrainee->setIcon(QIcon(QStringLiteral(":/icons/traineeArchive.png")));
        }

-        ui->btnToOrFromArchiveTrainee->setEnabled(true);
+        if(dbLMS->isLoggedInTrainee(id_trainee))
+        {//Это залогированный! Удалять/Архивировать/Редактировать нельзя!
+            ui->btnDeleteTrainee->setEnabled(false);
+            ui->btnToOrFromArchiveTrainee->setEnabled(false);
+            ui->btnEdit->setEnabled(false);
+        }
+        else
+        {
+            ui->btnToOrFromArchiveTrainee->setEnabled(true);

-        ui->btnEdit->setEnabled(true);
+            if(dbLMS->isArchivedTrainee(id_trainee))
+                ui->btnDeleteTrainee->setEnabled(true);
+            else
+                ui->btnDeleteTrainee->setEnabled(false);
+
+            ui->btnEdit->setEnabled(true);
+        }
+
+        //ui->btnToOrFromArchiveTrainee->setEnabled(true);
+
+        //ui->btnEdit->setEnabled(true);
        ui->btnArchive->setEnabled(true);
    }
 }
--- a/DB_IaT/InstructorsAndTrainees/trainees/editortrainees.h
+++ b/DB_IaT/InstructorsAndTrainees/trainees/editortrainees.h
@@ -3,9 +3,8 @@

 #include <QDialog>
 #include <QTreeWidget>
-//#include "computersLocations.h"
-#include "interfacedatabaselms.h"
 #include "traineesview.h"
+//#include "computersLocations.h"

 namespace Ui {
 class EditorTrainees;
@@ -13,7 +12,7 @@ class EditorTrainees;

 //Виджет для редактирования БД Обучаемых

-class EditorTrainees : /*public QDialog,*/ public TraineesView
+class EditorTrainees : public TraineesView
 {
    Q_OBJECT

--- a/DB_IaT/InstructorsAndTrainees/trainees/editortrainees.ui
+++ b/DB_IaT/InstructorsAndTrainees/trainees/editortrainees.ui
@@ -24,7 +24,8 @@
    <widget class="QWidget" name="widget" native="true">
     <property name="font">
      <font>
-       <pointsize>12</pointsize>
+       <family>Tahoma</family>
+       <pointsize>10</pointsize>
      </font>
     </property>
     <property name="styleSheet">
@@ -34,32 +35,7 @@
      <item row="0" column="0">
       <layout class="QHBoxLayout" name="horizontalLayout_1">
        <item>
-         <layout class="QVBoxLayout" name="verticalLayout_1">
-          <item>
-           <widget class="QTreeWidget" name="treeWidget">
-            <property name="font">
-             <font>
-              <family>Tahoma</family>
-              <pointsize>10</pointsize>
-             </font>
-            </property>
-            <property name="iconSize">
-             <size>
-              <width>20</width>
-              <height>20</height>
-             </size>
-            </property>
-            <property name="columnCount">
-             <number>1</number>
-            </property>
-            <column>
-             <property name="text">
-              <string notr="true">1</string>
-             </property>
-            </column>
-           </widget>
-          </item>
-         </layout>
+         <layout class="QVBoxLayout" name="verticalLayout_1"/>
        </item>
        <item>
         <widget class="QWidget" name="widget_2" native="true">
@@ -78,6 +54,7 @@
          <property name="font">
           <font>
            <family>Tahoma</family>
+            <pointsize>10</pointsize>
           </font>
          </property>
          <property name="styleSheet">
--- a/DB_IaT/InstructorsAndTrainees/trainees/traineesview.cpp
+++ b/DB_IaT/InstructorsAndTrainees/trainees/traineesview.cpp
@@ -1,25 +1,59 @@
 #include <QHeaderView>
 #include "traineesview.h"

-TraineesView::TraineesView(InterfaceDataBaseLMS* dbLMS, TypeView type, bool adminMode, QWidget *parent):
-    CommonView(type, adminMode, parent),
-    dbLMS(dbLMS)
+TraineesView::TraineesView(InterfaceDataBaseLMS* dbLMS, TypeView type, QWidget *parent):
+    CommonView(dbLMS, type, parent)
 {

 }

-void TraineesView::preparationTreeWidget(QTreeWidget *tree)
+void TraineesView::slot_NeedUpdateUI(bool treeInstructor, bool treeTrainee)
 {
-    treeWidget = tree;
+    if(typeView == TypeView::onlyView)
+    {
+        if(adminMode)
+            archiveVisible = true;
+        else
+           archiveVisible = false;
+    }
+    else
+    {
+        archiveVisible = true;
+    }

+    if(adminMode)
+    {
+        treeWidget->setColumnHidden(ColumnsTreeTrainees::clmn_ID, false);
+        treeWidget->setColumnHidden(ColumnsTreeTrainees::clmn_Archived, false);
+    }
+    else
+    {
+        treeWidget->setColumnHidden(ColumnsTreeTrainees::clmn_ID, true);
+        treeWidget->setColumnHidden(ColumnsTreeTrainees::clmn_Archived, true);
+    }
+
+    updateButtons();
+
+    if(treeTrainee)
+        loadTraineesFromDB();
+}
+
+void TraineesView::preparationTreeWidget(/*QTreeWidget *tree*/)
+{
+    //treeWidget = tree;
+
+    /*
    if(treeWidget == nullptr)
        return;
+        */

    treeWidget->setColumnCount(10);

    reSetHeadTreeWidget();

-    treeWidget->header()->setStyleSheet(QStringLiteral("font-size: 10pt;"));
+    //treeWidget->header()->setStyleSheet(QStringLiteral("font-size: 10pt;"));
+    treeWidget->setStyleSheet(QStringLiteral("font-size: 10pt;"
+                                             "font-family: Tahoma;"));

    treeWidget->setColumnWidth(ColumnsTreeTrainees::clmn_ID, 80);
    treeWidget->setColumnWidth(ColumnsTreeTrainees::clmn_Trainee, 250);
@@ -28,8 +62,8 @@ void TraineesView::preparationTreeWidget(QTreeWidget *tree)
    treeWidget->setColumnWidth(ColumnsTreeTrainees::clmn_Class, 130);
    treeWidget->setColumnWidth(ColumnsTreeTrainees::clmn_Computer, 130);
    treeWidget->setColumnWidth(ColumnsTreeTrainees::clmn_IP_address, 130);
-    treeWidget->setColumnWidth(ColumnsTreeTrainees::clmn_Archived, 80);
-    treeWidget->setColumnWidth(ColumnsTreeTrainees::clmn_Logged, 80);
+    treeWidget->setColumnWidth(ColumnsTreeTrainees::clmn_Archived, 100);
+    treeWidget->setColumnWidth(ColumnsTreeTrainees::clmn_Logged, 100);
    treeWidget->setColumnWidth(ColumnsTreeTrainees::clmn_Tasks, 200);


@@ -40,15 +74,21 @@ void TraineesView::preparationTreeWidget(QTreeWidget *tree)
        treeWidget->setColumnHidden(ColumnsTreeTrainees::clmn_Password, true);
        treeWidget->setColumnHidden(ColumnsTreeTrainees::clmn_Archived, true);

-        archiveVisible = false;
+        if(adminMode)
+            archiveVisible = true;
+        else
+            archiveVisible = false;
+
        notLoggedInVisible = true;
    }
    else
    {//control
+        archiveVisible = true;
+        notLoggedInVisible = true;
+
        if(adminMode)
        {
-            archiveVisible = true;
-            notLoggedInVisible = true;
+
        }
        else
        {
@@ -63,19 +103,23 @@ void TraineesView::preparationTreeWidget(QTreeWidget *tree)

 void TraineesView::loadTraineesFromDB()
 {
-    QList <Group> listGroups;
-    QList <Trainee> listTrainees;
-    //dbTrainees->transactionBegin();
-    listGroups = dbLMS->getListGroups();
-    listTrainees = dbLMS->getListTrainees();
-    //dbTrainees->transactionEnd();
-
+    /*
    if(treeWidget == nullptr)
-        return;
+        return;*/

    //Обновление дерева
    treeWidget->clear();

+    if(!dbLMS->DBisConnected())
+        return;
+
+    QList <Group> listGroups;
+    QList <Trainee> listTrainees;
+    //dbLMS->transactionBegin();
+    listGroups = dbLMS->getListGroups();
+    listTrainees = dbLMS->getListTrainees();
+    //dbLMS->transactionEnd();
+
    for(Group group : listGroups)
    {
        //Группа
@@ -102,7 +146,8 @@ void TraineesView::loadTraineesFromDB()
            ItemTrainee->setText(ColumnsTreeTrainees::clmn_IP_address, trainee.getComputer().getIpAddress());

            //Сокрытие пароля
-            ItemTrainee->setText(ColumnsTreeTrainees::clmn_Password, QStringLiteral("******"));
+            if(!adminMode)
+                ItemTrainee->setText(ColumnsTreeTrainees::clmn_Password, QStringLiteral("******"));

            if(trainee.getArchived())
            {//Архивный
--- a/DB_IaT/InstructorsAndTrainees/trainees/traineesview.h
+++ b/DB_IaT/InstructorsAndTrainees/trainees/traineesview.h
@@ -2,7 +2,6 @@
 #define TRAINEESVIEW_H

 #include "instructorsAndTrainees_global.h"
-#include "interfacedatabaselms.h"
 #include "commonview.h"

 //Родительский класс представления БД Обучаемых (для просмотра и управления)
@@ -12,7 +11,7 @@ class TraineesView: public CommonView
    Q_OBJECT

 public:
-    TraineesView(InterfaceDataBaseLMS* dbLMS, TypeView type, bool adminMode, QWidget *parent = nullptr);
+    TraineesView(InterfaceDataBaseLMS* dbLMS, TypeView type, QWidget *parent = nullptr);

 protected:
    enum ColumnsTreeTrainees{        
@@ -28,14 +27,16 @@ protected:
        clmn_ID
    };

+public Q_SLOTS:
+    //Слот обработки сигнала необходимости обновления интерфейса
+    void slot_NeedUpdateUI(bool treeInstructor, bool treeTrainee);
+
 protected:
-    void preparationTreeWidget(QTreeWidget* tree);
+    virtual void updateButtons(){};
+    void preparationTreeWidget(/*QTreeWidget* tree*/);
    void loadTraineesFromDB();

    void reSetHeadTreeWidget();
-
-protected:
-    InterfaceDataBaseLMS* dbLMS;
 };

 #endif // TRAINEESVIEW_H
--- a/DB_IaT/InstructorsAndTrainees/trainees/viewertrainees.cpp
+++ b/DB_IaT/InstructorsAndTrainees/trainees/viewertrainees.cpp
@@ -2,21 +2,18 @@
 #include "viewertrainees.h"
 #include "ui_viewertrainees.h"

-ViewerTrainees::ViewerTrainees(InterfaceDataBaseLMS* db, bool adminMode, QWidget *parent) :
-    TraineesView(db, CommonView::TypeView::onlyView, adminMode, parent),
+ViewerTrainees::ViewerTrainees(InterfaceDataBaseLMS* db, QWidget *parent) :
+    TraineesView(db, CommonView::TypeView::onlyView, parent),
    ui(new Ui::ViewerTrainees)
 {
    ui->setupUi(this);

-    this->adminMode = adminMode;
+    connect(treeWidget, &QTreeWidget::currentItemChanged, this, &ViewerTrainees::on_treeWidget_currentItemChanged);

-    // Сделаем первоначальную инициализацию перевода для окна виджета
-    qtLanguageTranslator.load(QString(QStringLiteral("translations/InstructorsAndTrainees_")) + QString(QStringLiteral("ru_RU")), QStringLiteral("."));
-    qApp->installTranslator(&qtLanguageTranslator);
+    ui->horizontalLayout_2->addWidget(treeWidget);

-    preparationTreeWidget(ui->treeWidget);
+    preparationTreeWidget(/*ui->treeWidget*/);
    setNotLoggedInVisible(true);
-    loadTraineesFromDB();
 }

 ViewerTrainees::~ViewerTrainees()
@@ -24,12 +21,7 @@ ViewerTrainees::~ViewerTrainees()
    delete ui;
 }

-void ViewerTrainees::setFilterTraineeLoggedIn(bool enabled)
-{
-    setNotLoggedInVisible(!enabled);
-    loadTraineesFromDB();
-}
-
+/*
 void ViewerTrainees::on_treeWidget_itemClicked(QTreeWidgetItem *item, int column)
 {
    if(item->childCount() == 0)
@@ -37,20 +29,20 @@ void ViewerTrainees::on_treeWidget_itemClicked(QTreeWidgetItem *item, int column
        QString login = item->text(ColumnsTreeTrainees::clmn_Login);
        Q_EMIT signal_traineeSelected(login);
    }
-}
+}*/

 void ViewerTrainees::slot_tabMessengerChanged(QString login)
 {
-    for (int i = 0; i < ui->treeWidget->topLevelItemCount(); i++)
+    for (int i = 0; i < treeWidget->topLevelItemCount(); i++)
    {//Проход по группам
-        int countChild = ui->treeWidget->topLevelItem(i)->childCount();
+        int countChild = treeWidget->topLevelItem(i)->childCount();

        for (int j = 0; j < countChild; j++)
        {//Проход по обучаемым
-            QString loginChild = ui->treeWidget->topLevelItem(i)->child(j)->text(ColumnsTreeTrainees::clmn_Login);
+            QString loginChild = treeWidget->topLevelItem(i)->child(j)->text(ColumnsTreeTrainees::clmn_Login);
            if(loginChild == login)
            {
-                ui->treeWidget->setCurrentItem(ui->treeWidget->topLevelItem(i)->child(j));
+                treeWidget->setCurrentItem(treeWidget->topLevelItem(i)->child(j));
                Q_EMIT signal_traineeSelected(login);
                return;
            }
@@ -62,22 +54,19 @@ void ViewerTrainees::changeEvent(QEvent *event)
 {
    // В случае получения события изменения языка приложения
    if (event->type() == QEvent::LanguageChange)
-    {
-        ui->retranslateUi(this);    // переведём окно заново
+    {// переведём окно заново
+        ui->retranslateUi(this);

        reSetHeadTreeWidget();
-        loadTraineesFromDB();
+        //loadTraineesFromDB();
+        slot_NeedUpdateUI(false, true);
    }
 }

-void ViewerTrainees::slot_LanguageChanged(QString language)
-{
-    qtLanguageTranslator.load(QString(QStringLiteral("translations/InstructorsAndTrainees_")) + language, QStringLiteral("."));
-    qApp->installTranslator(&qtLanguageTranslator);
-}
-
 void ViewerTrainees::on_btnEditorTrainees_clicked()
 {
+    Q_EMIT signal_BlockAutorization(true);
+
    EditorTrainees editorTraineesGroups(dbLMS, adminMode);
    QDialog* dialog = new QDialog(this);
    QHBoxLayout *layout = new QHBoxLayout(dialog);
@@ -87,4 +76,30 @@ void ViewerTrainees::on_btnEditorTrainees_clicked()
    dialog->exec();

    loadTraineesFromDB();
+
+    Q_EMIT signal_BlockAutorization(false);
+}
+
+void ViewerTrainees::on_treeWidget_currentItemChanged(QTreeWidgetItem *current, QTreeWidgetItem *previous)
+{
+    if(current == nullptr)
+        return;
+
+    if(current->childCount() == 0)
+    {//Выбран обучаемый
+        QString login = current->text(ColumnsTreeTrainees::clmn_Login);
+        Q_EMIT signal_traineeSelected(login);
+    }
+}
+
+void ViewerTrainees::updateButtons()
+{
+    if(authComplited)
+    {
+        ui->btnEditorTrainees->setEnabled(true);
+    }
+    else
+    {
+        ui->btnEditorTrainees->setEnabled(false);
+    }
 }
--- a/DB_IaT/InstructorsAndTrainees/trainees/viewertrainees.h
+++ b/DB_IaT/InstructorsAndTrainees/trainees/viewertrainees.h
@@ -1,11 +1,6 @@
 #ifndef TRAINEESWIDGET_H
 #define TRAINEESWIDGET_H

-#include <QWidget>
-#include <QObject>
-#include <QEvent>
-#include "instructorsAndTrainees_global.h"
-#include "interfacedatabaselms.h"
 #include "traineesview.h"

 namespace Ui {
@@ -19,24 +14,20 @@ class ViewerTrainees : public TraineesView
    Q_OBJECT

 public:
-    explicit ViewerTrainees(InterfaceDataBaseLMS* db, bool adminMode, QWidget *parent = nullptr);
+    explicit ViewerTrainees(InterfaceDataBaseLMS* db, QWidget *parent = nullptr);
    ~ViewerTrainees();

 protected:
-    // Метод получения событий
-    // В нём будет производиться проверка события смены перевода приложения
    void changeEvent(QEvent * event) override;

-public Q_SLOTS:
-    void slot_LanguageChanged(QString language);
-
-public:
-    void setFilterTraineeLoggedIn( bool enabled );
+Q_SIGNALS:
+    //сигнал о блокировке авторизации
+    void signal_BlockAutorization(bool block);

 private Q_SLOTS:
-    void on_treeWidget_itemClicked(QTreeWidgetItem *item, int column);
-
+    //void on_treeWidget_itemClicked(QTreeWidgetItem *item, int column);
    void on_btnEditorTrainees_clicked();
+    void on_treeWidget_currentItemChanged(QTreeWidgetItem *current, QTreeWidgetItem *previous);

 public Q_SLOTS:
    //слот обработки сигнала об изменении вкладки диалога в мессенджере
@@ -46,6 +37,9 @@ Q_SIGNALS:
    //сигнал о выборе обучаемого
    void signal_traineeSelected(QString login);

+private:
+    void updateButtons() override;
+
 private:
    Ui::ViewerTrainees *ui;
 };
--- a/DB_IaT/InstructorsAndTrainees/trainees/viewertrainees.ui
+++ b/DB_IaT/InstructorsAndTrainees/trainees/viewertrainees.ui
@@ -13,6 +13,7 @@
  <property name="font">
   <font>
    <family>Tahoma</family>
+    <pointsize>10</pointsize>
   </font>
  </property>
  <property name="windowTitle">
@@ -38,6 +39,9 @@
           <layout class="QVBoxLayout" name="verticalLayout">
            <item>
             <widget class="QToolButton" name="btnEditorTrainees">
+              <property name="enabled">
+               <bool>false</bool>
+              </property>
              <property name="minimumSize">
               <size>
                <width>130</width>
@@ -77,30 +81,6 @@
            </item>
           </layout>
          </item>
-          <item>
-           <widget class="QTreeWidget" name="treeWidget">
-            <property name="font">
-             <font>
-              <family>Tahoma</family>
-              <pointsize>10</pointsize>
-             </font>
-            </property>
-            <property name="iconSize">
-             <size>
-              <width>20</width>
-              <height>20</height>
-             </size>
-            </property>
-            <property name="columnCount">
-             <number>1</number>
-            </property>
-            <column>
-             <property name="text">
-              <string notr="true">1</string>
-             </property>
-            </column>
-           </widget>
-          </item>
         </layout>
        </item>
       </layout>
--- a/DB_IaT/InstructorsAndTrainees/translations/InstructorsAndTraineesWidget_ru_RU.qm
+++ b/DB_IaT/InstructorsAndTrainees/translations/InstructorsAndTraineesWidget_ru_RU.qm
--- a/DB_IaT/InstructorsAndTrainees/translations/InstructorsAndTraineesWidget_ru_RU.ts
+++ b/DB_IaT/InstructorsAndTrainees/translations/InstructorsAndTraineesWidget_ru_RU.ts
@@ -0,0 +1,492 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!DOCTYPE TS>
+<TS version="2.1" language="ru_RU">
+<context>
+    <name>DialogAuthorizationInstructor</name>
+    <message>
+        <location filename="../instructors/dialogauthorizationinstructor.ui" line="19"/>
+        <source>Instructor authorization</source>
+        <translation>Авторизация инструктора</translation>
+    </message>
+    <message>
+        <location filename="../instructors/dialogauthorizationinstructor.ui" line="29"/>
+        <source>Login</source>
+        <translation>Логин</translation>
+    </message>
+    <message>
+        <location filename="../instructors/dialogauthorizationinstructor.ui" line="36"/>
+        <location filename="../instructors/dialogauthorizationinstructor.ui" line="54"/>
+        <source>admin</source>
+        <translation></translation>
+    </message>
+    <message>
+        <location filename="../instructors/dialogauthorizationinstructor.ui" line="47"/>
+        <source>Password</source>
+        <translation>Пароль</translation>
+    </message>
+</context>
+<context>
+    <name>DialogEditGroup</name>
+    <message>
+        <location filename="../trainees/dialogeditgroup.ui" line="19"/>
+        <source>Group</source>
+        <translation>Группа</translation>
+    </message>
+    <message>
+        <location filename="../trainees/dialogeditgroup.ui" line="33"/>
+        <source>Name</source>
+        <translation>Имя</translation>
+    </message>
+</context>
+<context>
+    <name>DialogEditInstructor</name>
+    <message>
+        <location filename="../instructors/dialogeditinstructor.ui" line="19"/>
+        <source>Instructor</source>
+        <translation>Инструктор</translation>
+    </message>
+    <message>
+        <location filename="../instructors/dialogeditinstructor.ui" line="29"/>
+        <source>Name</source>
+        <translation>Имя</translation>
+    </message>
+    <message>
+        <location filename="../instructors/dialogeditinstructor.ui" line="47"/>
+        <source>Login</source>
+        <translation>Логин</translation>
+    </message>
+    <message>
+        <location filename="../instructors/dialogeditinstructor.ui" line="61"/>
+        <source>Password</source>
+        <translation>Пароль</translation>
+    </message>
+    <message>
+        <location filename="../instructors/dialogeditinstructor.ui" line="78"/>
+        <source>Administrator</source>
+        <translation>Администратор</translation>
+    </message>
+    <message>
+        <location filename="../instructors/dialogeditinstructor.ui" line="100"/>
+        <source>Archived</source>
+        <translation>Архивный</translation>
+    </message>
+    <message>
+        <location filename="../instructors/dialogeditinstructor.ui" line="122"/>
+        <source>Logged</source>
+        <translation>Залогирован</translation>
+    </message>
+</context>
+<context>
+    <name>DialogEditTrainee</name>
+    <message>
+        <location filename="../trainees/dialogedittrainee.ui" line="19"/>
+        <source>Trainee</source>
+        <translation>Обучаемый</translation>
+    </message>
+    <message>
+        <location filename="../trainees/dialogedittrainee.ui" line="46"/>
+        <source>Name</source>
+        <translation>Имя</translation>
+    </message>
+    <message>
+        <location filename="../trainees/dialogedittrainee.ui" line="60"/>
+        <source>Login</source>
+        <translation>Логин</translation>
+    </message>
+    <message>
+        <location filename="../trainees/dialogedittrainee.ui" line="74"/>
+        <source>Password</source>
+        <translation>Пароль</translation>
+    </message>
+    <message>
+        <location filename="../trainees/dialogedittrainee.ui" line="91"/>
+        <source>Archived</source>
+        <translation>Архивный</translation>
+    </message>
+    <message>
+        <location filename="../trainees/dialogedittrainee.ui" line="113"/>
+        <source>Logged</source>
+        <translation>Залогирован</translation>
+    </message>
+</context>
+<context>
+    <name>EditorInstructors</name>
+    <message>
+        <location filename="../instructors/editorinstructors.ui" line="14"/>
+        <source>List instructors</source>
+        <translation>Список инструкторов</translation>
+    </message>
+    <message>
+        <location filename="../instructors/editorinstructors.ui" line="104"/>
+        <source>New instructor</source>
+        <translation>Новый инструктор</translation>
+    </message>
+    <message>
+        <location filename="../instructors/editorinstructors.ui" line="142"/>
+        <source>Delete instructor</source>
+        <translation>Удалить инструктора</translation>
+    </message>
+    <message>
+        <location filename="../instructors/editorinstructors.ui" line="174"/>
+        <location filename="../instructors/editorinstructors.cpp" line="224"/>
+        <source>To archive</source>
+        <translation>Архивировать</translation>
+    </message>
+    <message>
+        <location filename="../instructors/editorinstructors.ui" line="212"/>
+        <source>Edit</source>
+        <translation>Редактировать</translation>
+    </message>
+    <message>
+        <location filename="../instructors/editorinstructors.ui" line="263"/>
+        <source>Show archive</source>
+        <translation>Показать архив</translation>
+    </message>
+    <message>
+        <location filename="../instructors/editorinstructors.cpp" line="89"/>
+        <source>Error!</source>
+        <translation>Ошибка!</translation>
+    </message>
+    <message>
+        <location filename="../instructors/editorinstructors.cpp" line="89"/>
+        <source>You cannot delete the Administrator.</source>
+        <translation>Нельзя удалить администратора.</translation>
+    </message>
+    <message>
+        <location filename="../instructors/editorinstructors.cpp" line="93"/>
+        <source>Attention!</source>
+        <translation>Внимание!</translation>
+    </message>
+    <message>
+        <location filename="../instructors/editorinstructors.cpp" line="93"/>
+        <source>The deletion will be irrevocable.
+Delete it anyway?</source>
+        <translation>Удаление будет безвозвратным.
+Всё равно удалить?</translation>
+    </message>
+    <message>
+        <location filename="../instructors/editorinstructors.cpp" line="219"/>
+        <source>From archive</source>
+        <translation>Разархивировать</translation>
+    </message>
+</context>
+<context>
+    <name>EditorTrainees</name>
+    <message>
+        <location filename="../trainees/editortrainees.ui" line="20"/>
+        <source>List trainees</source>
+        <translation>Список обучаемых</translation>
+    </message>
+    <message>
+        <location filename="../trainees/editortrainees.ui" line="113"/>
+        <source>New group</source>
+        <translation>Новая группа</translation>
+    </message>
+    <message>
+        <location filename="../trainees/editortrainees.ui" line="151"/>
+        <source>Delete group</source>
+        <translation>Удалить группу</translation>
+    </message>
+    <message>
+        <location filename="../trainees/editortrainees.ui" line="189"/>
+        <source>New trainee</source>
+        <translation>Новый обучаемый</translation>
+    </message>
+    <message>
+        <location filename="../trainees/editortrainees.ui" line="227"/>
+        <source>Delete trainee</source>
+        <translation>Удалить обучаемого</translation>
+    </message>
+    <message>
+        <location filename="../trainees/editortrainees.ui" line="265"/>
+        <location filename="../trainees/editortrainees.cpp" line="394"/>
+        <location filename="../trainees/editortrainees.cpp" line="416"/>
+        <source>To archive</source>
+        <translation>Архивировать</translation>
+    </message>
+    <message>
+        <location filename="../trainees/editortrainees.ui" line="303"/>
+        <source>Edit</source>
+        <translation>Редактировать</translation>
+    </message>
+    <message>
+        <location filename="../trainees/editortrainees.ui" line="354"/>
+        <source>Show archive</source>
+        <translation>Показать архив</translation>
+    </message>
+    <message>
+        <location filename="../trainees/editortrainees.cpp" line="90"/>
+        <source>Editing error!</source>
+        <translation>Ошибка редактирования!</translation>
+    </message>
+    <message>
+        <location filename="../trainees/editortrainees.cpp" line="90"/>
+        <source>The group is not empty.
+It is not possible to delete a non-empty group.</source>
+        <translation>Группа не пуста. Невозможно удалить непустую группу.</translation>
+    </message>
+    <message>
+        <location filename="../trainees/editortrainees.cpp" line="95"/>
+        <location filename="../trainees/editortrainees.cpp" line="187"/>
+        <source>Attention!</source>
+        <translation>Внимание!</translation>
+    </message>
+    <message>
+        <location filename="../trainees/editortrainees.cpp" line="95"/>
+        <location filename="../trainees/editortrainees.cpp" line="187"/>
+        <source>The deletion will be irrevocable.
+Delete anyway?</source>
+        <translation>Удаление будет безвозвратным. Всё равно удалить?</translation>
+    </message>
+    <message>
+        <location filename="../trainees/editortrainees.cpp" line="409"/>
+        <source>From archive</source>
+        <translation>Разархивировать</translation>
+    </message>
+</context>
+<context>
+    <name>InstructorsAndTraineesWidget</name>
+    <message>
+        <location filename="../instructorsandtraineeswidget.ui" line="14"/>
+        <source>Form</source>
+        <translation>Форма</translation>
+    </message>
+    <message>
+        <location filename="../instructorsandtraineeswidget.ui" line="27"/>
+        <source>Database LMS</source>
+        <translation>База данных СУО</translation>
+    </message>
+    <message>
+        <location filename="../instructorsandtraineeswidget.ui" line="46"/>
+        <source>Connection to DB</source>
+        <translation>Соединиться с БД</translation>
+    </message>
+    <message>
+        <location filename="../instructorsandtraineeswidget.ui" line="75"/>
+        <location filename="../instructorsandtraineeswidget.cpp" line="55"/>
+        <location filename="../instructorsandtraineeswidget.cpp" line="215"/>
+        <source>Authorization Instructor</source>
+        <translation>Авторизация инструктора</translation>
+    </message>
+    <message>
+        <location filename="../instructorsandtraineeswidget.ui" line="111"/>
+        <source>Logged in instructor:</source>
+        <translation>Авторизованный инструктор:</translation>
+    </message>
+    <message>
+        <location filename="../instructorsandtraineeswidget.ui" line="118"/>
+        <location filename="../instructorsandtraineeswidget.cpp" line="236"/>
+        <source>none</source>
+        <translation>нет</translation>
+    </message>
+    <message>
+        <location filename="../instructorsandtraineeswidget.cpp" line="53"/>
+        <location filename="../instructorsandtraineeswidget.cpp" line="199"/>
+        <source>Deauthorization Instructor</source>
+        <translation>Деавторизация инструктора</translation>
+    </message>
+    <message>
+        <location filename="../instructorsandtraineeswidget.cpp" line="59"/>
+        <location filename="../instructorsandtraineeswidget.cpp" line="164"/>
+        <source>Disconnection DB</source>
+        <translation>Отключение БД</translation>
+    </message>
+    <message>
+        <location filename="../instructorsandtraineeswidget.cpp" line="61"/>
+        <location filename="../instructorsandtraineeswidget.cpp" line="181"/>
+        <source>Connection DB</source>
+        <translation>Подключение БД</translation>
+    </message>
+    <message>
+        <location filename="../instructorsandtraineeswidget.cpp" line="78"/>
+        <location filename="../instructorsandtraineeswidget.cpp" line="98"/>
+        <location filename="../instructorsandtraineeswidget.cpp" line="103"/>
+        <source>Instructor authorization</source>
+        <translation>Авторизация инструктора</translation>
+    </message>
+    <message>
+        <location filename="../instructorsandtraineeswidget.cpp" line="98"/>
+        <source>Successfully!</source>
+        <translation>Успешно!</translation>
+    </message>
+    <message>
+        <location filename="../instructorsandtraineeswidget.cpp" line="103"/>
+        <source>Invalid login or password!</source>
+        <translation>Неправильный логин или пароль!</translation>
+    </message>
+</context>
+<context>
+    <name>InstructorsView</name>
+    <message>
+        <location filename="../instructors/instructorsview.cpp" line="92"/>
+        <location filename="../instructors/instructorsview.cpp" line="105"/>
+        <location filename="../instructors/instructorsview.cpp" line="115"/>
+        <source>yes</source>
+        <translation>да</translation>
+    </message>
+    <message>
+        <location filename="../instructors/instructorsview.cpp" line="98"/>
+        <location filename="../instructors/instructorsview.cpp" line="110"/>
+        <location filename="../instructors/instructorsview.cpp" line="120"/>
+        <source>no</source>
+        <translation>нет</translation>
+    </message>
+    <message>
+        <location filename="../instructors/instructorsview.cpp" line="147"/>
+        <source>Instructor</source>
+        <translation>Инструктор</translation>
+    </message>
+    <message>
+        <location filename="../instructors/instructorsview.cpp" line="147"/>
+        <source>Login</source>
+        <translation>Логин</translation>
+    </message>
+    <message>
+        <location filename="../instructors/instructorsview.cpp" line="147"/>
+        <source>Password</source>
+        <translation>Пароль</translation>
+    </message>
+    <message>
+        <location filename="../instructors/instructorsview.cpp" line="147"/>
+        <source>Administrator</source>
+        <translation>Администратор</translation>
+    </message>
+    <message>
+        <location filename="../instructors/instructorsview.cpp" line="147"/>
+        <source>Archived</source>
+        <translation>Архивный</translation>
+    </message>
+    <message>
+        <location filename="../instructors/instructorsview.cpp" line="147"/>
+        <source>Logged</source>
+        <translation>Залогирован</translation>
+    </message>
+    <message>
+        <location filename="../instructors/instructorsview.cpp" line="147"/>
+        <source>ID</source>
+        <translation>ID</translation>
+    </message>
+</context>
+<context>
+    <name>TasksWidget</name>
+    <message>
+        <location filename="../tasks/taskswidget.ui" line="14"/>
+        <location filename="../tasks/taskswidget.ui" line="22"/>
+        <source>Task manager</source>
+        <translation>Менеджер задач</translation>
+    </message>
+</context>
+<context>
+    <name>TraineesView</name>
+    <message>
+        <location filename="../trainees/traineesview.cpp" line="114"/>
+        <location filename="../trainees/traineesview.cpp" line="127"/>
+        <source>yes</source>
+        <translation>да</translation>
+    </message>
+    <message>
+        <location filename="../trainees/traineesview.cpp" line="120"/>
+        <location filename="../trainees/traineesview.cpp" line="132"/>
+        <source>no</source>
+        <translation>нет</translation>
+    </message>
+    <message>
+        <location filename="../trainees/traineesview.cpp" line="169"/>
+        <source>Trainee</source>
+        <translation>Обучаемый</translation>
+    </message>
+    <message>
+        <location filename="../trainees/traineesview.cpp" line="169"/>
+        <source>Login</source>
+        <translation>Логин</translation>
+    </message>
+    <message>
+        <location filename="../trainees/traineesview.cpp" line="169"/>
+        <source>Password</source>
+        <translation>Пароль</translation>
+    </message>
+    <message>
+        <location filename="../trainees/traineesview.cpp" line="169"/>
+        <source>Class</source>
+        <translation>Класс</translation>
+    </message>
+    <message>
+        <location filename="../trainees/traineesview.cpp" line="169"/>
+        <source>Computer</source>
+        <translation>Компьютер</translation>
+    </message>
+    <message>
+        <location filename="../trainees/traineesview.cpp" line="169"/>
+        <source>IP address</source>
+        <translation>IP адрес</translation>
+    </message>
+    <message>
+        <location filename="../trainees/traineesview.cpp" line="169"/>
+        <source>Archived</source>
+        <translation>Архивный</translation>
+    </message>
+    <message>
+        <location filename="../trainees/traineesview.cpp" line="169"/>
+        <source>Logged</source>
+        <translation>Залогирован</translation>
+    </message>
+    <message>
+        <location filename="../trainees/traineesview.cpp" line="169"/>
+        <source>Tasks</source>
+        <translation>Задачи</translation>
+    </message>
+    <message>
+        <location filename="../trainees/traineesview.cpp" line="169"/>
+        <source>ID</source>
+        <translation>ID</translation>
+    </message>
+</context>
+<context>
+    <name>ViewerInstructors</name>
+    <message>
+        <location filename="../instructors/viewerinstructors.ui" line="19"/>
+        <location filename="../instructors/viewerinstructors.ui" line="32"/>
+        <source>Instructors</source>
+        <translation>Инструкторы</translation>
+    </message>
+    <message>
+        <location filename="../instructors/viewerinstructors.ui" line="51"/>
+        <source>Editor of Instructors</source>
+        <translation>Редактор инструкторов</translation>
+    </message>
+    <message>
+        <location filename="../instructors/viewerinstructors.cpp" line="63"/>
+        <source>Attention!</source>
+        <translation>Внимание!</translation>
+    </message>
+    <message>
+        <location filename="../instructors/viewerinstructors.cpp" line="64"/>
+        <source>Only the Administrator has the right to edit instructors.</source>
+        <translation>Только Администратор имеет право редактировать инструкторов.</translation>
+    </message>
+    <message>
+        <location filename="../instructors/viewerinstructors.cpp" line="72"/>
+        <source>Editor of instructors</source>
+        <translation>Редактор инструкторов</translation>
+    </message>
+</context>
+<context>
+    <name>ViewerTrainees</name>
+    <message>
+        <location filename="../trainees/viewertrainees.ui" line="19"/>
+        <location filename="../trainees/viewertrainees.ui" line="32"/>
+        <source>Trainees</source>
+        <translation>Обучаемые</translation>
+    </message>
+    <message>
+        <location filename="../trainees/viewertrainees.ui" line="51"/>
+        <source>Editor of Trainees</source>
+        <translation>Редактор обучаемых</translation>
+    </message>
+    <message>
+        <location filename="../trainees/viewertrainees.cpp" line="92"/>
+        <source>Editor of trainees</source>
+        <translation>Редактор обучаемых</translation>
+    </message>
+</context>
+</TS>