[FEATURE] add copy cell content action in attributetable context menu

python/gui/attributetable/qgsdualview.sip

@@ -189,6 +189,12 @@ class QgsDualView : QStackedWidget
      */
     void toggleSearchMode( bool enabled );
 
+    /**
+     * Copy the content of the selected cell in the clipboard.
+     * @note added in QGIS 1.16
+     */
+    void copyCellContent() const;
+
   signals:
     /**
      * Is emitted, whenever the display expression is successfully changed

src/gui/attributetable/qgsdualview.cpp

@@ -26,6 +26,7 @@
 #include "qgsvectordataprovider.h"
 #include "qgsvectorlayercache.h"
 
+#include <QClipboard>
 #include <QDialog>
 #include <QMenu>
 #include <QMessageBox>
@@ -379,13 +380,32 @@ int QgsDualView::filteredFeatureCount()
   return mFilterModel->rowCount();
 }
 
+void QgsDualView::copyCellContent() const
+{
+  QAction* action = qobject_cast<QAction*>( sender() );
+
+  if ( action && action->data().isValid() && action->data().canConvert<QModelIndex>() )
+  {
+    QModelIndex index = action->data().value<QModelIndex>();
+
+    QgsFeature f = masterModel()->feature( index );
+    QVariant var = f.attributes().at( index.column() );
+    QApplication::clipboard()->setText( var.toString() );
+  }
+}
+
 void QgsDualView::viewWillShowContextMenu( QMenu* menu, const QModelIndex& atIndex )
 {
   if ( !menu )
   {
     return;
   }
 
+  QAction *copyContentAction = new QAction( tr( "Copy cell content" ), this );
+  copyContentAction->setData( QVariant::fromValue<QModelIndex>( atIndex ) );
+  menu->addAction( copyContentAction );
+  connect( copyContentAction, SIGNAL( triggered() ), this, SLOT( copyCellContent() ) );
+
   QgsVectorLayer* vl = mFilterModel->layer();
   QgsMapCanvas* canvas = mFilterModel->mapCanvas();
   if ( canvas && vl && vl->geometryType() != QGis::NoGeometry )

src/gui/attributetable/qgsdualview.h

@@ -226,6 +226,12 @@ class GUI_EXPORT QgsDualView : public QStackedWidget, private Ui::QgsDualViewBas
      */
     void toggleSearchMode( bool enabled );
 
+    /**
+     * Copy the content of the selected cell in the clipboard.
+     * @note added in QGIS 1.16
+     */
+    void copyCellContent() const;
+
   signals:
     /**
      * Is emitted, whenever the display expression is successfully changed
@@ -358,4 +364,6 @@ class GUI_EXPORT QgsAttributeTableMapLayerAction : public QAction
     QModelIndex mFieldIdx;
 };
 
+Q_DECLARE_METATYPE( QModelIndex );
+
 #endif // QGSDUALVIEW_H