From c50c6b9d3c5291c6b5fd726fa46b036300fdc2d6 Mon Sep 17 00:00:00 2001
From: Ivan Holmes <ivan@ivanholmes.co.uk>
Date: Mon, 4 Nov 2019 18:38:52 +0000
Subject: [PATCH] fix crash when 'remove chord' is pressed but there are no
 chords

---
 gui.py | 22 ++++++++++++----------
 1 file changed, 12 insertions(+), 10 deletions(-)

diff --git a/gui.py b/gui.py
index 1dca7f2..e95b0b4 100755
--- a/gui.py
+++ b/gui.py
@@ -358,14 +358,15 @@ class DocumentWindow(QMainWindow):
         self.window.blockChordComboBox.addItems(list(self.chordDict.keys()))
 
     def removeChordAction(self):
-        self.updateChords()
+        if self.window.chordTableView.selectionModel().hasSelection(): # check for selection
+            self.updateChords()
         
-        row = self.window.chordTableView.selectionModel().currentIndex().row()
-        self.doc.chordList.pop(row)
+            row = self.window.chordTableView.selectionModel().currentIndex().row()
+            self.doc.chordList.pop(row)
 
-        self.window.chordTableView.populate(self.doc.chordList)
-        self.clearChordLineEdits()
-        self.updateChordDict()
+            self.window.chordTableView.populate(self.doc.chordList)
+            self.clearChordLineEdits()
+            self.updateChordDict()
     
     def addChordAction(self):
         success = False # initialise
@@ -421,12 +422,13 @@ class DocumentWindow(QMainWindow):
         self.window.blockNotesLineEdit.repaint()
 
     def removeBlockAction(self):
-        self.updateBlocks()
+        if self.window.blockTableView.selectionModel().hasSelection(): # check for selection
+            self.updateBlocks()
 
-        row = self.window.blockTableView.selectionModel().currentIndex().row()
-        self.doc.blockList.pop(row)
+            row = self.window.blockTableView.selectionModel().currentIndex().row()
+            self.doc.blockList.pop(row)
 
-        self.window.blockTableView.populate(self.doc.blockList)
+            self.window.blockTableView.populate(self.doc.blockList)
     
     def addBlockAction(self):
         self.updateBlocks()