public void EnableDiffContextMenu(bool enable)
{
_currentViewIsPatch = enable;
ignoreWhitespaceChangesToolStripMenuItem.Enabled = enable;
increaseNumberOfLinesToolStripMenuItem.Enabled = enable;
descreaseNumberOfLinesToolStripMenuItem.Enabled = enable;
showEntireFileToolStripMenuItem.Enabled = enable;
treatAllFilesAsTextToolStripMenuItem.Enabled = enable;
}