closes #4: Allowed to multiselect items on voucher and delete them via context menu or Ctrl+Del shortcut.

shop/shopform.cpp

@@ -14,6 +14,7 @@
 #include <QSortFilterProxyModel>
 #include <QMessageBox>
 #include <QScrollBar>
+#include <QItemSelectionModel>
 #include "data/favorititem.h"
 #include "favbutton.h"
 
@@ -71,6 +72,14 @@ ShopForm::ShopForm(QWidget *parent) :
     ui->temporarySaveButton->setEnabled(false);
     ui->saveButton->setEnabled(false);
     ui->payButton->setEnabled(false);
+
+    m_itemCtxMenu.reset(new QMenu());
+    m_itemCtxMenu->addAction(ui->actionDelete_items);
+    ui->actualReceipt->addAction(ui->actionDelete_items);
+
+    connect(ui->actualReceipt->selectionModel(), &QItemSelectionModel::selectionChanged, [this](const QItemSelection &selected, const QItemSelection &) {
+        ui->actionDelete_items->setEnabled(!selected.isEmpty());
+    });
 }
 
 ShopForm::~ShopForm()
@@ -341,29 +350,8 @@ void ShopForm::onCountChanged(int oldCount/* = 0*/)
         }
     }
 
-    ShopService srv;
-    srv.calculate(m_voucher);
-    this->m_itemsModel->setData(m_voucher->items());
-
-    setTotalText();
-    ui->temporarySaveButton->setEnabled(!m_voucher->items().isEmpty());
-    ui->saveButton->setEnabled(!m_voucher->items().isEmpty());
-    ui->payButton->setEnabled(!m_voucher->items().isEmpty());
-
-    if (m_voucher->status() == Voucher::NEW && m_voucher->id() == 0)
-    {
-        srv.saveVoucher(m_voucher);
-    }
-    else
-    {
-        srv.updateVoucher(m_voucher);
-    }
-
-    if (item != nullptr)
-    {
-        int countAdded = item->count() - oldCount;
-        srv.updateRelatedItem(item, countAdded);
-    }
+    recalculate();
+    updateItemCount(item, oldCount);
 }
 
 void ShopForm::createVoucher()
@@ -502,6 +490,37 @@ void ShopForm::setTotalText()
     ui->priceNoVat->setText(QString::number(m_voucher->priceNoVat().toDouble(), 'f', 2));
 }
 
+void ShopForm::updateItemCount(VoucherItem *item, int oldCount)
+{
+    if (item != nullptr)
+    {
+        ShopService srv;
+        int countAdded = item->count() - oldCount;
+        srv.updateRelatedItem(item, countAdded);
+    }
+}
+
+void ShopForm::recalculate()
+{
+    ShopService srv;
+    srv.calculate(m_voucher);
+    this->m_itemsModel->setData(m_voucher->items());
+
+    setTotalText();
+    ui->temporarySaveButton->setEnabled(!m_voucher->items().isEmpty());
+    ui->saveButton->setEnabled(!m_voucher->items().isEmpty());
+    ui->payButton->setEnabled(!m_voucher->items().isEmpty());
+
+    if (m_voucher->status() == Voucher::NEW && m_voucher->id() == 0)
+    {
+        srv.saveVoucher(m_voucher);
+    }
+    else
+    {
+        srv.updateVoucher(m_voucher);
+    }
+}
+
 void ShopForm::on_receiptCombo_currentIndexChanged(int)
 {
     if (!m_voucher.isNull() && m_voucher->items().isEmpty())
@@ -617,3 +636,30 @@ void ShopForm::on_commoditySearch_returnPressed()
     }
     ui->commoditySearch->clear();
 }
+
+void ShopForm::on_actionDelete_items_triggered()
+{
+    if (QMessageBox::question(this, tr("Delete items"), tr("Realy delete selected voucher items?")) == QMessageBox::Yes) {
+        QList<VoucherItemPtr> forDelete;
+
+        for (const auto& row : ui->actualReceipt->selectionModel()->selectedIndexes()) {
+            forDelete << m_itemsModel->itemFromIndex(row);
+        }
+
+        for (auto& item : forDelete) {
+            m_voucher->removeItem(item);
+            int oldCount = item->count();
+            item->setCount(0);
+            updateItemCount(item.data(), oldCount);
+        }
+
+        recalculate();
+        m_itemsModel->setData(m_voucher->items());
+    }
+}
+
+void ShopForm::on_actualReceipt_customContextMenuRequested(const QPoint &pos)
+{
+    QPoint globalPos = ui->actualReceipt->mapToGlobal(pos);
+    m_itemCtxMenu->exec(globalPos);
+}

shop/shopform.h

@@ -3,6 +3,8 @@
 
 #include <QWidget>
 #include <QList>
+#include <QScopedPointer>
+#include <QMenu>
 #include "data/shop-data.h"
 #include <autotablemodel.h>
 #include "settings/shopsettings.h"
@@ -50,12 +52,18 @@ private slots:
 
     void on_commoditySearch_returnPressed();
 
+    void on_actionDelete_items_triggered();
+
+    void on_actualReceipt_customContextMenuRequested(const QPoint &pos);
+
+
 private:
     Ui::ShopForm *ui;
     QSharedPointer<Voucher> m_voucher;
     AutoTableModel<VoucherItem> *m_itemsModel;
     AutoTableModel<ShopItem> *m_commodityModel;
     bool m_itemFound;
+    QScopedPointer<QMenu> m_itemCtxMenu;
 
     void loadLast();
     void loadButtons(const ShopSettingsPtr& settings);
@@ -67,6 +75,8 @@ private:
     void createEmptyVoucher();
     void addItem(QSharedPointer<IShopItem> item, int count);
     void setTotalText();
+    void recalculate();
+    void updateItemCount(VoucherItem *item, int oldCount);
 };
 
 #endif // SHOPFORM_H

shop/shopform.ui

@@ -6,7 +6,7 @@
    <rect>
     <x>0</x>
     <y>0</y>
-    <width>988</width>
+    <width>990</width>
     <height>643</height>
    </rect>
   </property>
@@ -174,6 +174,12 @@
              <height>0</height>
             </size>
            </property>
+           <property name="contextMenuPolicy">
+            <enum>Qt::CustomContextMenu</enum>
+           </property>
+           <property name="selectionBehavior">
+            <enum>QAbstractItemView::SelectRows</enum>
+           </property>
           </widget>
          </item>
          <item>
@@ -599,6 +605,14 @@
     </widget>
    </item>
   </layout>
+  <action name="actionDelete_items">
+   <property name="text">
+    <string>Delete items</string>
+   </property>
+   <property name="shortcut">
+    <string>Ctrl+Del</string>
+   </property>
+  </action>
  </widget>
  <resources>
   <include location="../core/rc.qrc"/>