GH-1665 attempt at workaround for MultiMC not starting on macOS Sierra

This tries to detect the issue and instructs the user to fix it by
moving the application to /Applications or ~/Applications.

In addition, several other previously poorly handled fatal errors
now show an error dialog.

1 files changed, 6 insertions, 1 deletions

diff --git a/application/MultiMC.h b/application/MultiMC.h
index 846bb152..7600a120 100644
--- a/application/MultiMC.h
+++ b/application/MultiMC.h
@@ -50,6 +50,8 @@ public:
 	enum Status
 	{
 		StartingUp,
+		UnwritableLog,
+		FailedShowError,
 		Failed,
 		Succeeded,
 		Initialized
@@ -172,7 +174,7 @@ private slots:
 	void setupWizardFinished(int status);
 
 private:
-	void initLogger();
+	bool initLogger();
 	void shutdownLogger();
 	void initIcons();
 	void initThemes();
@@ -186,6 +188,9 @@ private:
 	void shutdownAnalytics();
 	void performMainStartupAction();
 
+	// sets the fatal error message and m_status to Failed.
+	void showFatalErrorMessage(const QString & title, const QString & content);
+
 private:
 	QDateTime startTime;