Re: same table, different delegates
Re: same table, different delegates
- Subject: Re: same table, different delegates
- From: Koen van der Drift <email@hidden>
- Date: Thu, 25 Dec 2003 15:52:49 -0500
On Dec 25, 2003, at 3:36 PM, Jonathan Jackel wrote:
I have a window with a table to display some data. The window is the
delegate so I set up all the code for populating, sorting the table
in the window code.
Do you mean delegate or datasource? Or both? It is relatively common
to have a separate object, called a controller, handle this chore.
Typically you would not make a user interface element (a window or a
view) the delegate or datasource of a tableview.
The windowcontroller I have for the first window is both the delegate
and datasource for the table the first window is displaying. So it has
methods such as -(int)numberOfRowsInTableView:(NSTableView *)aTableView
and the like, but also -(void)tableView:(NSTableView *)aTableView
didClickTableColumn:(NSTableColumn *)aTableColumn for sorting purposes.
For the second window, the data is completely different, but needs to
be displayed in the same way, with the same columns and sorting code.
Now I am adding a feature to the app that uses different window, but
the same table, using different data.
Do you mean it uses the same class of table? Or the same instance?
I mean the same class, so the actual data it is displaying is different
for both windows (the windows and their controllers are different
classes).
I understand the MVC concept and already use it in my app, but the data
(model) differs for each window, so I assumed I cannot use it in this
case.
So my thought was to make a separate MyTableView class, and let the
class take care of displaying, and remove
-(int)numberOfRowsInTableView:(NSTableView *)aTableView etc from the
windowcontroller. The controller then just has to make sure that the
table gets the data, and MyTableView takes care of the rest. Does
NSTableView have methods I can use instead of
-(int)numberOfRowsInTableView:(NSTableView *)aTableView etc?
thanks,
- Koen.
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