From 036e4349e0866f6172e2203ddf185404ab8f3887 Mon Sep 17 00:00:00 2001
From: Martin Kleusberg <mkleusberg@gmail.com>
Date: Tue, 31 Jan 2017 18:56:42 +0100
Subject: [PATCH] Fix crash when clicking Create Index in empty database

This fixes a crash that would happen if you click the Create Index
button while having opened an empty database file, i.e. without any
table to create an index on yet.
---
 src/EditIndexDialog.cpp | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/src/EditIndexDialog.cpp b/src/EditIndexDialog.cpp
index f63c48e1..69ae484d 100644
--- a/src/EditIndexDialog.cpp
+++ b/src/EditIndexDialog.cpp
@@ -68,6 +68,14 @@ void EditIndexDialog::tableChanged(const QString& new_table, bool initialLoad)
         index.clearColumns();
     }
 
+    // Stop here if table name is empty
+    if(new_table.isEmpty())
+    {
+        // Call checkInput() before to make sure the OK button is disabled
+        checkInput();
+        return;
+    }
+
     // And fill the table again
     QStringList fields = pdb.getObjectByName(new_table).dynamicCast<sqlb::Table>()->fieldNames();
     ui->tableIndexColumns->setRowCount(fields.size());