Disable editing columns in "Display in Hex" mode

This is a workaround for a potential data loss/corruption bug until we really fix this (see #1876)

Author: dmoagx

Source/SPTableContentDelegate.m

@@ -261,11 +261,12 @@ - (BOOL)tableView:(NSTableView *)tableView shouldEditTableColumn:(NSTableColumn
 				[tableContentView reloadData];
 			}
 
+			// Retrieve the column definition
+			NSDictionary *columnDefinition = [cqColumnDefinition objectAtIndex:[[tableColumn identifier] integerValue]];
+
 			// Open the editing sheet if required
 			if ([tableContentView shouldUseFieldEditorForRow:rowIndex column:[[tableColumn identifier] integerValue] checkWithLock:NULL]) {
 
-				// Retrieve the column definition
-				NSDictionary *columnDefinition = [cqColumnDefinition objectAtIndex:[[tableColumn identifier] integerValue]];
 				BOOL isBlob = [tableDataInstance columnIsBlobOrText:[[tableColumn headerCell] stringValue]];
 
 				// A table is per definition editable
@@ -318,6 +319,7 @@ - (BOOL)tableView:(NSTableView *)tableView shouldEditTableColumn:(NSTableColumn
 
 				if ([[columnDefinition objectForKey:@"typegrouping"] isEqualToString:@"binary"] && [prefs boolForKey:SPDisplayBinaryDataAsHex]) {
 					[fieldEditor setTextMaxLength:[[self tableView:tableContentView objectValueForTableColumn:tableColumn row:rowIndex] length]];
+					isFieldEditable = NO;
 				}
 
 				NSInteger editedColumn = 0;
@@ -345,6 +347,13 @@ - (BOOL)tableView:(NSTableView *)tableView shouldEditTableColumn:(NSTableColumn
 				return NO;
 			}
 
+			// TODO: Fix editing of "Display as Hex" columns and remove this (also see above)
+			if ([[columnDefinition objectForKey:@"typegrouping"] isEqualToString:@"binary"] && [prefs boolForKey:SPDisplayBinaryDataAsHex]) {
+				NSBeep();
+				[SPTooltip showWithObject:NSLocalizedString(@"Disable \"Display Binary Data as Hex\" in the View menu to edit this field.",@"Temporary : Tooltip shown when trying to edit a binary field in table content view while it is displayed using HEX conversion")];
+				return NO;
+			}
+			
 			return YES;
 		}