如何从NSTableViewCell显示NSPopup

Question

我正在为Xcode5开发一个OSX应用程序

我想在用户结束编辑tableview单元格后显示一个弹出窗口我正在做的是以下内容：

-(void)tableView:(NSTableView *)tableView setObjectValue:(id)object forTableColumn:(NSTableColumn *)tableColumn row:(NSInteger)row{

    if ([[tableColumn.headerCell stringValue] isEqualToString:@"CUENTAS DE ACTIVO"]) {
        [arrayOne replaceObjectAtIndex:row withObject:object];
    }

    else{
        [arrayTwo replaceObjectAtIndex:row withObject:object];
    }

    [self.popoverClasifCuentas showRelativeToRect:[tableView bounds] ofView:[[[tableColumn dataCell] objectAtIndex:row] view] preferredEdge:NSMaxYEdge];


}

当我运行此操作时，我收到以下错误：

-[NSTextFieldCell objectAtIndex:]: unrecognized selector sent to instance 0x6080002a2a60
2014-06-09 19:17:18.424 eAccounting[2976:303] Exception detected while handling key input.
2014-06-09 19:17:18.424 eAccounting[2976:303] -[NSTextFieldCell objectAtIndex:]: unrecognized selector sent to instance 0x6080002a2a60
2014-06-09 19:17:18.426 eAccounting[2976:303] (
    0   CoreFoundation                      0x00007fff9428625c __exceptionPreprocess + 172
    1   libobjc.A.dylib                     0x00007fff8c47ee75 objc_exception_throw + 43
    2   CoreFoundation                      0x00007fff9428912d -[NSObject(NSObject) doesNotRecognizeSelector:] + 205
    3   CoreFoundation                      0x00007fff941e4322 ___forwarding___ + 1010
    4   CoreFoundation                      0x00007fff941e3ea8 _CF_forwarding_prep_0 + 120
    5   eAccounting                         0x000000010000a88a -[EdicionDeCuentasWC tableView:setObjectValue:forTableColumn:row:] + 922
    6   AppKit                              0x00007fff955699f5 -[NSTableView textDidEndEditing:] + 487
    7   CoreFoundation                      0x00007fff94254e0c __CFNOTIFICATIONCENTER_IS_CALLING_OUT_TO_AN_OBSERVER__ + 12
    8   CoreFoundation                      0x00007fff941488dd _CFXNotificationPost + 2893
    9   Foundation                          0x00007fff8d58c7ba -[NSNotificationCenter postNotificationName:object:userInfo:] + 68
    10  AppKit                              0x00007fff9512582d -[NSTextView(NSPrivate) _giveUpFirstResponder:] + 438
    11  AppKit                              0x00007fff95173aec -[NSTextView(NSKeyBindingCommands) insertNewline:] + 239
    12  AppKit                              0x00007fff950f6c2f -[NSResponder doCommandBySelector:] + 71
    13  AppKit                              0x00007fff9512410a -[NSTextView doCommandBySelector:] + 196
    14  AppKit                              0x00007fff950f6151 -[NSKeyBindingManager(NSKeyBindingManager_MultiClients) interpretEventAsCommand:forClient:] + 1392
    15  AppKit                              0x00007fff951151c2 -[NSTextInputContext handleEvent:] + 845
    16  AppKit                              0x00007fff950f49dd -[NSView interpretKeyEvents:] + 180
    17  AppKit                              0x00007fff95114d6d -[NSTextView keyDown:] + 658
    18  AppKit                              0x00007fff950c156b -[NSWindow sendEvent:] + 1843
    19  AppKit                              0x00007fff95062b32 -[NSApplication sendEvent:] + 3395
    20  AppKit                              0x00007fff94eb2a19 -[NSApplication run] + 646
    21  AppKit                              0x00007fff94e9d7a3 NSApplicationMain + 940
    22  eAccounting                         0x000000010000c3e2 main + 34
    23  libdyld.dylib                       0x00007fff899a55fd start + 1
    24  ???                                 0x0000000000000003 0x0 + 3

它不能正常工作，暂时我在我的NSTableView顶部添加了一个隐藏按钮，为它设置了一个IBOutlet（popoverButton）并跟随IBAction：

- (IBAction)showPopover:(id)sender {

    ClasificacionDeCuentasVC *vc = (ClasificacionDeCuentasVC *) self.popoverClasifCuentas.contentViewController;
    vc.delegate = self;

    [self.popoverClasifCuentas showRelativeToRect:[sender bounds] ofView:sender preferredEdge:NSMaxYEdge];
}

然后我用我的NSTableView方法替换了最后一句：

-(void)tableView:(NSTableView *)tableView setObjectValue:(id)object forTableColumn:(NSTableColumn *)tableColumn row:(NSInteger)row{

    if ([[tableColumn.headerCell stringValue] isEqualToString:@"CUENTAS DE ACTIVO"]) {
        [arrayOne replaceObjectAtIndex:row withObject:object];
    }

    else{
        [arrayTwo replaceObjectAtIndex:row withObject:object];
    }


    [self.popoverButton performClick:tableView];
}

它有效，但在NSButton的位置显示我的popover：

我希望在我的tableview单元格的位置显示它，该怎么做？