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Diffstat (limited to 'Source/CustomQuery.m')
| -rw-r--r-- | Source/CustomQuery.m | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/Source/CustomQuery.m b/Source/CustomQuery.m index 7616fb5d..d6194484 100644 --- a/Source/CustomQuery.m +++ b/Source/CustomQuery.m @@ -1276,6 +1276,27 @@ } } +/** + * This function changes the text color of text/blob fields whose content is NULL + */ +- (void)tableView:(CMCopyTable *)aTableView willDisplayCell:(id)cell forTableColumn:(NSTableColumn*)aTableColumn row:(int)row +{ + + if ( aTableView == customQueryView ) { + + // For NULL cell's display the user's NULL value placeholder in grey to easily distinguish it from other values + if ([cell respondsToSelector:@selector(setTextColor:)]) { + + // Note that this approach of changing the color of NULL placeholders is dependent on the cell's value matching that + // of the user's NULL value preference which was set in the result array when it was retrieved (see fetchResultAsArray). + // Also, as an added measure check that the table column actually allows NULLs to make sure we don't change a cell that + // happens to have a value matching the NULL placeholder, but the column doesn't allow NULLs. + [cell setTextColor:([[cell stringValue] isEqualToString:[prefs objectForKey:@"NullValue"]]) ? [NSColor lightGrayColor] : [NSColor blackColor]]; + } + } + +} + - (id)tableView:(NSTableView *)aTableView objectValueForTableColumn:(NSTableColumn *)aTableColumn row:(int)rowIndex |