UI: Use non-native file dialog w/ Linux

UI/window-remux.cpp

@@ -21,7 +21,6 @@
 
 #include <QCloseEvent>
 #include <QDirIterator>
-#include <QFileDialog>
 #include <QItemDelegate>
 #include <QLineEdit>
 #include <QMessageBox>
@@ -216,9 +215,9 @@ void RemuxEntryPathItemDelegate::handleBrowse(QWidget *container)
 
 	bool isSet = false;
 	if (isOutput) {
-		QString newPath = QFileDialog::getSaveFileName(
-			container, QTStr("Remux.SelectTarget"), currentPath,
-			OutputPattern);
+		QString newPath = SaveFile(container,
+					   QTStr("Remux.SelectTarget"),
+					   currentPath, OutputPattern);
 
 		if (!newPath.isEmpty()) {
 			container->setProperty(PATH_LIST_PROP,
@@ -226,7 +225,7 @@ void RemuxEntryPathItemDelegate::handleBrowse(QWidget *container)
 			isSet = true;
 		}
 	} else {
-		QStringList paths = QFileDialog::getOpenFileNames(
+		QStringList paths = OpenFiles(
 			container, QTStr("Remux.SelectRecording"), currentPath,
 			QTStr("Remux.OBSRecording") + QString(" ") +
 				InputPattern);