Smarter method to edit file informartion of files in the list

src/Dialog_MainWindow.cpp

@@ -391,9 +391,8 @@ void MainWindow::editMetaButtonClicked(void)
 			sourceFileView->selectRow(index.row());
 		}
 
-		AudioFileModel file = m_fileListModel->getFile(index);
+		AudioFileModel &file = (*m_fileListModel)[index];
 		iResult = metaInfoDialog->exec(file, index.row() > 0, index.row() < m_fileListModel->rowCount() - 1);
-		m_fileListModel->setFile(index, file);
 
 		if(!iResult) break;
 	}

src/Model_FileList.cpp

@@ -204,6 +204,11 @@ AudioFileModel FileListModel::getFile(const QModelIndex &index)
 	}
 }
 
+AudioFileModel &FileListModel::operator[] (const QModelIndex &index)
+{
+	return m_fileList[index.row()];
+}
+
 bool FileListModel::setFile(const QModelIndex &index, const AudioFileModel &audioFile)
 {
 	if(index.row() >= 0 && index.row() < m_fileList.count())

src/Model_FileList.h

@@ -46,6 +46,7 @@ public:
 	bool moveFile(const QModelIndex &index, int delta);
 	AudioFileModel getFile(const QModelIndex &index);
 	bool setFile(const QModelIndex &index, const AudioFileModel &audioFile);
+	AudioFileModel &operator[] (const QModelIndex &index);
 
 public slots:
 	void addFile(const QString &filePath);