diff -r 678978fe9ffd -r 289ad03f0e57 UI/CompareDialog.py
--- a/UI/CompareDialog.py Wed Jul 31 18:34:43 2013 +0200
+++ b/UI/CompareDialog.py Wed Jul 31 20:01:58 2013 +0200
@@ -332,8 +332,10 @@
self.vsb2.setValue(0)
self.firstButton.setEnabled(False)
self.upButton.setEnabled(False)
- self.downButton.setEnabled(len(self.diffParas) > 0)
- self.lastButton.setEnabled(len(self.diffParas) > 0)
+ self.downButton.setEnabled(len(self.diffParas) > 0 and
+ (self.vsb1.isVisible() or self.vsb2.isVisible()))
+ self.lastButton.setEnabled(len(self.diffParas) > 0 and
+ (self.vsb1.isVisible() or self.vsb2.isVisible()))
self.totalLabel.setText(self.trUtf8('Total: {0}')\
.format(added + deleted + changed))
@@ -345,9 +347,10 @@
"""
Private slot to move the text display to the current diff position.
"""
- value = (self.diffParas[self.currentDiffPos] - 1) * self.fontHeight
- self.vsb1.setValue(value)
- self.vsb2.setValue(value)
+ if 0<= self.currentDiffPos < len(self.diffParas):
+ value = (self.diffParas[self.currentDiffPos] - 1) * self.fontHeight
+ self.vsb1.setValue(value)
+ self.vsb2.setValue(value)
def __scrollBarMoved(self, value):
"""
