before task parser

DB_LMS/DataBaseLMS/interfacedatabaselms.cpp

@@ -1,12 +1,47 @@
 #include <QMessageBox>
+#include <QCoreApplication>
+#include <QSqlError>
 #include "interfacedatabaselms.h"
 
-InterfaceDataBaseLMS::InterfaceDataBaseLMS():
+InterfaceDataBaseLMS::InterfaceDataBaseLMS(QWidget* parent):
+    QWidget(parent),
     DataBaseLMS()
 {
 
 }
 
+void InterfaceDataBaseLMS::slot_LanguageChanged(QString language)
+{
+    qtLanguageTranslator.load(QString(QStringLiteral("translations/DataBaseLMS_")) + language, QStringLiteral("."));
+    QCoreApplication::installTranslator(&qtLanguageTranslator);
+}
+
+bool InterfaceDataBaseLMS::ConnectionToDB()
+{
+    if(!createConnection())
+    {
+        QMessageBox::critical(this, dbName, tr("Connection error: ") + db->lastError().text());
+        return false;
+    }
+    else
+    {
+        QMessageBox::information(this, dbName, tr("Connection is successful!"));
+        return true;
+    }
+}
+
+bool InterfaceDataBaseLMS::DisConnectionFromDB()
+{
+    deleteConnection();
+    QMessageBox::information(this, dbName, tr("Disconnection is successful!"));
+    return true;
+}
+
+bool InterfaceDataBaseLMS::DBisConnected()
+{
+    return isConnected();
+}
+
 //Инструкторы
 
 bool InterfaceDataBaseLMS::AuthorizationInstructor(QString login, QString password)
@@ -39,6 +74,16 @@ bool InterfaceDataBaseLMS::deAuthorizationInstructor(QString login)
     return false;
 }
 
+bool InterfaceDataBaseLMS::deAuthorizationAllInstructors()
+{
+    return updateAllInstructorsLoggedIn(false);
+}
+
+QString InterfaceDataBaseLMS::getNameInstructorByLogin(QString login)
+{
+    return selectInstructorNameByLogin(login);
+}
+
 QList<Instructor> InterfaceDataBaseLMS::getListInstructors()
 {
     return selectAllInstructors();
@@ -67,35 +112,35 @@ int InterfaceDataBaseLMS::editInstructor(Instructor instructor)
     {
         if(instructor.getName() == QStringLiteral("<instructor>"))
         {//Имя не корректно!
-            QMessageBox::critical(nullptr, tr("Editing error!"),
+            QMessageBox::critical(this, tr("Editing error!"),
                                   tr("Unacceptable instructor name has been entered.\nThe changes will not be accepted."));
             return 0;
         }
 
         if(instructor.getLogin() == QStringLiteral("<login>"))
         {//Логин не корректен!
-            QMessageBox::critical(nullptr, tr("Editing error!"),
+            QMessageBox::critical(this, tr("Editing error!"),
                                   tr("Unacceptable instructor login has been entered.\nThe changes will not be accepted."));
             return 0;
         }
 
         if(instructor.getPassword() == QStringLiteral("<password>"))
         {//Пароль не корректный!
-            QMessageBox::critical(nullptr, tr("Editing error!"),
+            QMessageBox::critical(this, tr("Editing error!"),
                                   tr("Unacceptable instructor password has been entered.\nThe changes will not be accepted."));
             return 0;
         }
 
         if(instructor.getName() == exist_instructor.getName() && instructor.getID() != exist_instructor.getID())
         {//Имя уже существует
-            QMessageBox::critical(nullptr, tr("Editing error!"),
+            QMessageBox::critical(this, tr("Editing error!"),
                                   tr("An existing instructor name has been entered."));
             return 0;
         }
 
         if(instructor.getLogin() == exist_instructor.getLogin() && instructor.getID() != exist_instructor.getID())
         {//Логин уже существует!
-            QMessageBox::critical(nullptr, tr("Editing error!"),
+            QMessageBox::critical(this, tr("Editing error!"),
                                   tr("An existing instructor login has been entered.\nThe changes will not be accepted."));
             return 0;
         }
@@ -114,6 +159,11 @@ bool InterfaceDataBaseLMS::isArchivedInstructor(int id)
     return selectInstructorArchived(id);
 }
 
+bool InterfaceDataBaseLMS::isLoggedInInstructor(int id)
+{
+    return selectInstructorLoggedIn(id);
+}
+
 
 //Инструкторы
 
@@ -147,6 +197,11 @@ bool InterfaceDataBaseLMS::deAuthorizationTrainee(QString login)
     return false;
 }
 
+bool InterfaceDataBaseLMS::deAuthorizationAllTrainees()
+{
+    return updateAllTraineesLoggedIn(false);
+}
+
 QList<Task> InterfaceDataBaseLMS::getTasksTrainee(int id)
 {
     return selectTasksOfTrainee(id);
@@ -154,35 +209,17 @@ QList<Task> InterfaceDataBaseLMS::getTasksTrainee(int id)
 
 QString InterfaceDataBaseLMS::getNameTraineeOnComputer(QString computer_name)
 {
-    /*
-    for(Trainee trainee : listOfTrainees)
-    {
-        if(trainee.getComputer().getName() == computer_name)
-            return trainee.getName();
-    }*/
-    return QString(QStringLiteral(""));
+    return selectTraineeNameOnComputer(computer_name);
 }
 
 Trainee InterfaceDataBaseLMS::getTraineeOnComputer(QString computer_name)
 {
-    /*
-    for(Trainee trainee : listOfTrainees)
-    {
-        if(trainee.getComputer().getName() == computer_name)
-            return trainee;
-    }*/
-    return Trainee();
+    return selectTraineeOnComputer(computer_name);
 }
 
 QString InterfaceDataBaseLMS::getNameTraineeByLogin(QString login)
 {
-    /*
-    for(Trainee trainee : listOfTrainees)
-    {
-        if(trainee.getLogin() == login)
-            return trainee.getName();
-    }*/
-    return QString(QStringLiteral(""));
+    return selectTraineeNameByLogin(login);
 }
 
 QList<Trainee> InterfaceDataBaseLMS::getListTraineesInGroup(int id)
@@ -228,15 +265,15 @@ int InterfaceDataBaseLMS::editGroup(Group group)
     {
         if(group.getName() == QStringLiteral("<group>"))
         {//Имя не корректно!
-            QMessageBox::critical(nullptr, tr("Editing error!"),
+            QMessageBox::critical(this, tr("Editing error!"),
                                   tr("Unacceptable group name has been entered.\nThe changes will not be accepted."));
             return 0;
         }
 
         if(group.getName() == exist_group.getName() && group.getID() != exist_group.getID())
         {//Имя уже существует
-            QMessageBox::critical(nullptr, tr("Editing error!"),
-                                  tr("An existing group name has been entered."));
+            QMessageBox::critical(this, tr("Editing error!"),
+                                  tr("An existing group name has been entered.\nThe changes will not be accepted."));
             return 0;
         }
     }
@@ -262,35 +299,35 @@ int InterfaceDataBaseLMS::editTrainee(Trainee trainee)
     {
         if(trainee.getName() == QStringLiteral("<trainee>"))
         {//Имя не корректно!
-            QMessageBox::critical(nullptr, tr("Editing error!"),
+            QMessageBox::critical(this, tr("Editing error!"),
                                   tr("Unacceptable trainee name has been entered.\nThe changes will not be accepted."));
             return 0;
         }
 
         if(trainee.getLogin() == QStringLiteral("<login>"))
         {//Логин не корректен!
-            QMessageBox::critical(nullptr, tr("Editing error!"),
+            QMessageBox::critical(this, tr("Editing error!"),
                                   tr("Unacceptable trainee login has been entered.\nThe changes will not be accepted."));
             return 0;
         }
 
         if(trainee.getPassword() == QStringLiteral("<password>"))
         {//Пароль не корректный!
-            QMessageBox::critical(nullptr, tr("Editing error!"),
+            QMessageBox::critical(this, tr("Editing error!"),
                                   tr("Unacceptable trainee password has been entered.\nThe changes will not be accepted."));
             return 0;
         }
 
         if(trainee.getName() == exist_trainee.getName() && trainee.getID() != exist_trainee.getID())
         {//Имя уже существует
-            QMessageBox::critical(nullptr, tr("Editing error!"),
+            QMessageBox::critical(this, tr("Editing error!"),
                                   tr("An existing trainee name has been entered."));
             return 0;
         }
 
         if(trainee.getLogin() == exist_trainee.getLogin() && trainee.getID() != exist_trainee.getID())
         {//Логин уже существует!
-            QMessageBox::critical(nullptr, tr("Editing error!"),
+            QMessageBox::critical(this, tr("Editing error!"),
                                   tr("An existing trainee login has been entered.\nThe changes will not be accepted."));
             return 0;
         }
@@ -303,3 +340,8 @@ bool InterfaceDataBaseLMS::isArchivedTrainee(int id)
 {
     return selectTraineeArchived(id);
 }
+
+bool InterfaceDataBaseLMS::isLoggedInTrainee(int id)
+{
+    return selectTraineeLoggedIn(id);
+}