Удаление назначенных задач

InstructorsAndTrainees/tasks/ammtaskswidget.cpp

@@ -50,6 +50,10 @@ AMMtasksWidget::AMMtasksWidget(ConnectorToServer* connectorToServer, TypeList ty
     waitAnimationWidget->initialize(movie,this);
     waitAnimationWidget->moveToThread(threadAnimation);
     threadAnimation->start();
+
+    ui->btnDelete->setEnabled(false);
+    if(type == TypeList::listCommon)
+        ui->btnDelete->setVisible(false);
 }
 
 AMMtasksWidget::~AMMtasksWidget()
@@ -107,7 +111,14 @@ void AMMtasksWidget::changeEvent(QEvent *event)
 void AMMtasksWidget::on_treeWidget_currentItemChanged(QTreeWidgetItem *current, QTreeWidgetItem *previous)
 {
     if(current == nullptr)
+    {
+        ui->btnDelete->setEnabled(false);
         return;
+    }
+    else
+    {
+        ui->btnDelete->setEnabled(true);
+    }
 
     int id = current->text(ColumnsTree::clmn_ID).toInt();
 
@@ -274,3 +285,23 @@ void AMMtasksWidget::slot_AssignTaskAMMtoTrainee()
         }
     }
 }
+
+void AMMtasksWidget::on_btnDelete_clicked()
+{
+    QTreeWidgetItem *treeItemCurrent = treeWidget->currentItem();
+
+    if(treeItemCurrent != nullptr)
+    {
+        QTreeWidgetItem *treeItemParent = treeItemCurrent->parent();
+        if(treeItemParent == nullptr)
+        {//Выбрана задача
+
+            int id = treeItemCurrent->text(ColumnsTree::clmn_ID).toInt();
+
+            if(QMessageBox::warning(this, tr("Attention!"), tr("The deletion will be irrevocable.\nDelete it anyway?"), QMessageBox::Ok, QMessageBox::Cancel) == QMessageBox::Ok)
+            {
+                connectorToServer->sendQueryToDB(TypeQueryToDB::TYPE_QUERY_DELETE_TASK_AMM_TO_TRAINEE, id);
+            }
+        }
+    }
+}