Prompt whether to overwrite a symbol. Contributed by Alex Bruy (#3405)

git-svn-id: http://svn.osgeo.org/qgis/trunk/qgis@15237 c8812cc2-4d05-0410-92ff-de0c093fc19c

Author: wonder

src/gui/symbology-ng/qgsstylev2managerdialog.cpp

@@ -15,6 +15,7 @@
 #include <QFile>
 #include <QFileDialog>
 #include <QInputDialog>
+#include <QMessageBox>
 #include <QStandardItemModel>
 
 #include "qgsapplication.h"
@@ -239,6 +240,20 @@ bool QgsStyleV2ManagerDialog::addSymbol()
     return false;
   }
 
+  // check if there is no symbol with same name
+  if ( mStyle->symbolNames().contains( name ) )
+  {
+    int res = QMessageBox::warning( this, tr( "Save symbol" ),
+                                    tr( "Symbol with name '%1' already exists. Overwrite?" )
+                                    .arg( name ),
+                                    QMessageBox::Yes | QMessageBox::No );
+    if ( res != QMessageBox::Yes )
+    {
+      delete symbol;
+      return false;
+    }
+  }
+
   // add new symbol to style and re-populate the list
   mStyle->addSymbol( name, symbol );
   mModified = true;

src/gui/symbology-ng/qgssymbolv2selectordialog.cpp

@@ -14,6 +14,7 @@
 #include <QPainter>
 #include <QStandardItemModel>
 #include <QInputDialog>
+#include <QMessageBox>
 #include <QKeyEvent>
 #include <QMenu>
 
@@ -222,6 +223,19 @@ void QgsSymbolV2SelectorDialog::addSymbolToStyle()
   if ( !ok || name.isEmpty() )
     return;
 
+  // check if there is no symbol with same name
+  if ( mStyle->symbolNames().contains( name ) )
+  {
+    int res = QMessageBox::warning( this, tr( "Save symbol" ),
+                                    tr( "Symbol with name '%1' already exists. Overwrite?" )
+                                    .arg( name ),
+                                    QMessageBox::Yes | QMessageBox::No );
+    if ( res != QMessageBox::Yes )
+    {
+      return;
+    }
+  }
+
   // add new symbol to style and re-populate the list
   mStyle->addSymbol( name, mSymbol->clone() );