Added methods for better permission checks in modules.

Added method for returning selected entity in grid.
Added polymorphic methods for delete record and fill grid.

core/gridform.h

@@ -99,7 +99,7 @@ public slots:
         m_permissionDenied = false;
         connectService();
 
-        m_tableModel->setData(service()->all());
+        m_tableModel->setData(listForGrid());
         tableView()->setModel(m_tableModel);
 
         QList<QVariant> varList = Context::instance().settings()->value("grids/" + pluginId() + "/hide").toList();
@@ -174,10 +174,8 @@ private slots:
 protected:
     virtual void handleNewRecord() override
     {
-        PermissionEvaluator permEv;
-        if (!permEv.hasPermission(pluginId(), PERM_ADD))
+        if (!checkPermAdd())
         {
-            QMessageBox::critical(this, tr("Permission denied"), tr("You don't have permission to add new record."));
             return;
         }
 
@@ -194,10 +192,8 @@ protected:
 
     virtual void handleEditRecord() override
     {
-        PermissionEvaluator permEv;
-        if (!permEv.hasPermission(pluginId(), PERM_EDIT))
+        if (!checkPermEdit())
         {
-            QMessageBox::critical(this, tr("Permission denied"), tr("You don't have permission to edit record."));
             return;
         }
 
@@ -214,10 +210,8 @@ protected:
 
     void handleDeleteRecord() override
     {
-        PermissionEvaluator permEv;
-        if (!permEv.hasPermission(pluginId(), PERM_DELETE))
+        if (!checkPermDelete())
         {
-            QMessageBox::critical(this, tr("Permission denied"), tr("You don't have permission to delete record."));
             return;
         }
 
@@ -234,7 +228,7 @@ protected:
         if (reply == QMessageBox::Yes)
         {
             QSharedPointer<T> entity = m_tableModel->itemFromIndex(tableView()->currentIndex());
-            service()->erase(entity);
+            doDelete(entity);
 
             if (!m_permissionDenied)
             {
@@ -244,6 +238,42 @@ protected:
         }
     }
 
+    bool checkPermAdd()
+    {
+        PermissionEvaluator permEv;
+        if (!permEv.hasPermission(pluginId(), PERM_ADD))
+        {
+            QMessageBox::critical(this, tr("Permission denied"), tr("You don't have permission to add new record."));
+            return false;
+        }
+
+        return true;
+    }
+
+    bool checkPermEdit()
+    {
+        PermissionEvaluator permEv;
+        if (!permEv.hasPermission(pluginId(), PERM_EDIT))
+        {
+            QMessageBox::critical(this, tr("Permission denied"), tr("You don't have permission to edit record."));
+            return false;
+        }
+
+        return true;
+    }
+
+    bool checkPermDelete()
+    {
+        PermissionEvaluator permEv;
+        if (!permEv.hasPermission(pluginId(), PERM_DELETE))
+        {
+            QMessageBox::critical(this, tr("Permission denied"), tr("You don't have permission to delete record."));
+            return false;
+        }
+
+        return true;
+    }
+
     virtual int currentRecordId()
     {
         if (tableView()->currentIndex().isValid())
@@ -254,6 +284,26 @@ protected:
         return 0;
     }
 
+    QSharedPointer<T> currentEntity()
+    {
+        if (tableView()->currentIndex().isValid())
+        {
+            return m_tableModel->itemFromIndex(tableView()->currentIndex());
+        }
+
+        return QSharedPointer<T>();
+    }
+
+    virtual void doDelete(QSharedPointer<T> entity)
+    {
+        service()->erase(entity);
+    }
+
+    virtual QList<QSharedPointer<T> > listForGrid()
+    {
+        return service()->all();
+    }
+
     void addRow(QSharedPointer<T> entity)
     {
         m_tableModel->addRow(entity);