Another quickie question :-) About NSTableView

Discussion in 'Mac Programming' started by mdeh, Oct 27, 2009.

  1. macrumors 6502

    Jan 3, 2009
    I set up a NSTableView to play with. (for the drag etc). Added a NSMutArray as the "model" for a list of random words, which filled in the init method. To my surprise, the table fills when the app starts up. I looked at the docs and can find nothing about that,....but I suppose it makes sense. Why would you attach a list of objects as the datasource for a table if you did not want that table filled when you launched the app? The seems to be a whole host of calls in the the call stack that seems to trigger the "numberOfRowsInTableView". See below.

    Is this expected behaviour...under the circumstances?

    #0 0x10000135b in -[MyDocument(dataSource) numberOfRowsInTableView:] at TableViewDataSource.m:16
    #1 0x7fff86575c8c in -[NSTableView numberOfRows]
    #2 0x7fff86509624 in -[NSTableView _totalHeightOfTableView]
    #3 0x7fff865095e9 in -[NSTableView _minimumFrameSize]
    #4 0x7fff8650bba6 in -[NSTableView tile]
    #5 0x7fff86513d61 in -[NSTableView rowsInRect:]
    #6 0x7fff8652885f in -[NSTableView _dirtyVisibleCellsForKeyStateChange]
    #7 0x7fff86528574 in -[NSTableView _windowChangedKeyState]
    #8 0x7fff862dfffe in CFArrayApplyFunction
    #9 0x7fff8646fb01 in -[NSView _windowChangedKeyState]

    Thanks in advance.
  2. macrumors 68030


    Sep 13, 2001
    Portland, OR
    Yeah, -numberOfRowsInTableView: gets called a ton. Make sure it's quick :)
  3. thread starter macrumors 6502

    Jan 3, 2009

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