Don't allow 2 tilesets to have the same name.

code/studio/src/plugins/tile_editor/tile_editor_main_window.cpp

@@ -226,15 +226,13 @@ void TileEditorMainWindow::onTileSetAdd()
     QString text = QInputDialog::getText(this, tr("Add Tile Set"), tr("Enter Tile Set name:"), QLineEdit::Normal, "", &ok);
     if (ok && !text.isEmpty())
 	{
-		//if (ui.tileSetListWidget->findItems(text, Qt::MatchExactly).count() > 0)
-		//{
-		//	QMessageBox::information( this, tr("Error Adding Tile Set"), tr("This name already exists") );
-		//}
-		//else
-		//{
-
-		//QModelIndex index = m_ui->tileSetLV->selectionModel()->currentIndex();
 		TileModel *model = static_cast<TileModel*>(m_ui->tileSetLV->model());
+		
+		if( model->hasTileSet( text ) )
+		{
+			QMessageBox::information( this, tr("Error Adding Tile Set"), tr("This name already exists") );
+			return;
+		}
 
 		//if(index.isValid())
 		//{

code/studio/src/plugins/tile_editor/tile_item.h

@@ -67,7 +67,7 @@ public:
 	QVariant data(int column, int role) const;
 	int columnCount() const;
 
-	const QString &getTileSetName();
+	const QString &getTileSetName(){ return m_tileSetName; }
 private:
 	QString m_tileSetName;
 };

code/studio/src/plugins/tile_editor/tile_model.cpp

@@ -219,6 +219,24 @@ uint32 TileModel::getTileTypeSize(TileModel::TNodeTileType type)
 	return 0;
 }
 
+bool TileModel::hasTileSet( const QString &name )
+{
+	for( int i = 0; i < rowCount(); i++ )
+	{
+		QModelIndex idx = index( i, 0 );
+		if( !idx.isValid() )
+		{
+			continue;
+		}
+
+		TileSetNode *n = reinterpret_cast< TileSetNode* >( idx.internalPointer() );
+		if( n->getTileSetName() == name )
+			return true;
+	}
+
+	return false;
+}
+
 void TileModel::selectFilenameDisplay(bool selected)
 {
 	m_fileDisplay = selected;

code/studio/src/plugins/tile_editor/tile_model.h

@@ -87,6 +87,8 @@ public:
 
 	static TTileZoomFactor CurrentZoomFactor;
 
+	bool hasTileSet( const QString &name );
+
 public Q_SLOTS:
 	void selectFilenameDisplay(bool selected);
 	void selectIndexDisplay(bool selected);