Show a warning if the instance path contains a '!'

The checks and warnings happen the time MMC loads (via QLOG_INFO), the time the GUI starts (via a dialog) and when the user changes the instance path via the settings window.

1 files changed, 18 insertions, 0 deletions

diff --git a/gui/MainWindow.cpp b/gui/MainWindow.cpp
index ce03d7b9..d3dc8f6e 100644
--- a/gui/MainWindow.cpp
+++ b/gui/MainWindow.cpp
@@ -1533,3 +1533,21 @@ void MainWindow::checkSetDefaultJava()
 			MMC->settings()->set("JavaPath", QString("java"));
 	}
 }
+
+void MainWindow::checkInstancePathForProblems()
+{
+	QString instanceFolder = MMC->settings()->get("InstanceDir").toString();
+	if (checkProblemticPathJava(QDir(instanceFolder)))
+	{
+		QMessageBox warning;
+		warning.setText(tr(
+			"Your instance folder contains \'!\' and this is known to cause Java problems!"));
+		warning.setInformativeText(
+			tr("You have now three options: <br/>"
+			   " - ignore this warning <br/>"
+			   " - change the instance dir in the settings <br/>"
+			   " - move this installation of MultiMC5 to a different folder"));
+		warning.setDefaultButton(QMessageBox::Ok);
+		warning.exec();
+	}
+}