NSTableView cell editing: where to perform post-editing operations?

Question

I modify the source data of a NSTableView by directly selecting the cells ( NSTextFieldCell ) and editing the text in it.

I need to perform some operations on a cell before and after a cell is edited. I perform such operations before the editing in:

- (BOOL)tableView:(NSTableView *)aTableView shouldEditTableColumn:(NSTableColumn *)aTableColumn row:(NSInteger)rowIndex

But where can I perform the operations post editing?

Thanks

Answer 1

https://developer.apple.com/library/mac/documentation/Cocoa/Reference/ApplicationKit/Protocols/NSTableDataSource_Protocol/index.html#//apple_ref/occ/intfm/NSTableViewDataSource/tableView:setObjectValue:forTableColumn:row :

- (void)tableView:(NSTableView *)aTableView
   setObjectValue:(id)anObject
   forTableColumn:(NSTableColumn *)aTableColumn
              row:(NSInteger)rowIndex

Quoted from: https://developer.apple.com/library/mac/documentation/Cocoa/Conceptual/TableView/PopulatingCellTables/PopulatingCellTables.html

For your app to edit the content of an NSCell-based table view, you implement the tableView:setObjectValue:forTableColumn:row: data source protocol method. This method is similar to tableView:objectValueForTableColumn:row:, which provides the data for the table view, but instead of requesting that you return a value for the specified row and column, it provides the new value for that row and cell

Answer 2

Let google search for nstableview edit change and you will get a lot of detailed answers.

To make it short: use (some of) the following (and similar) delegate methods:

- (void)controlTextDidEndEditing:(NSNotification *)obj
- (void)controlTextDidChange:(NSNotification *)aNotification
- (BOOL)control:(NSControl *)control textShouldEndEditing:(NSText *)fieldEditor

and test them to show what are appropriate for your application:

- (void)controlTextDidEndEditing:(NSNotification *)obj
{
    NSDictionary *userInfo = [obj userInfo];
    NSTextView *aView = [userInfo valueForKey:@"NSFieldEditor"];
    NSLog(@"controlTextDidEndEditing %@", [aView string] );
}

- (void)controlTextDidChange:(NSNotification *)aNotification
{
    NSDictionary *userInfo = [aNotification userInfo];
    NSTextView *aView = [userInfo valueForKey:@"NSFieldEditor"];
    NSLog(@"controlTextDidChange >>%@<<", [aView string] );
}

- (BOOL)control:(NSControl *)control textShouldEndEditing:(NSText *)fieldEditor
{
    NSLog(@"control: textShouldEndEditing >%@<", [fieldEditor string] );
    return YES;
}

You can do this because the cells of the NSTableView are NSTextFieldCell s;