[Pyobjc-dev] problem with NSTableView

[chris b. <por...@ya...>]

Hello, I'm currently experiencing an error with my
program which lead to the following getting outputted
to the console

2003-03-07 21:14:33.618 whisper[508] Application did
finish launching.
2003-03-07 21:15:09.902 whisper[508] *** Assertion
failure in -[NSTableView _locationOfRow:],
TableView.subproj NSTableView.m:486
2003-03-07 21:15:10.028 whisper[508]
NSInternalInconsistencyException

I haven't actually been able to find the
_locationOfRow: method in any of Apple's documentation
or the web. I guess it must be a private call to do
with the way that the object renders itself to screen.
So if any of you know what this actually is so I can
figure out what is going wrong that would be very
useful.

I'm programming in Python and bridging to Cocoa with
the PyObjC module (version 0.8). This NSTableView
instance is pure Obj-C and was created via Interface
builder.

The error occurs when setting the datasource of the
NSTableView object using the following Python code.

self.knownEntitiesTable.setDataSource_(self.knownEntities)

self.knownEntities is a Python object that inheriting
from NSObject and implementing the informal
NSTableDataSource protocol. At this point it contains
no data to display as I'm just setting the program up
at this point.

Any help that you can give would be greatly
appreciated. Thanks in advance.

Chris

here is the python code of the knownEntities Object
that acts as the datasource.

class entityTable(NSObject):
    identitiesList = []
    counter = 0
        
    def numberOfRowsInTableView_(self):
        NSLog(str(self.counter))
        return self.counter
        
    def tableView_objectValueForTableColumn_row_(self,
tableView, tableColumn, row):
        NSLog(self.identitiesList[row].name)
        return self.identitiesList[row].name
        
    def
tableView_setObjectValue_forTableColumn_row_(self,
tableView, id, tableColumn, row):
        self.identitiesList.insert(row,id)
        
    def setIdentity(self,id,row):
        if row < len(self.identities):
            self.identitiesList[row] = id
        else:
            self.identitiesList.append(id)
        self.counter += 1
    
    def setIdentities(self,ids):
        self.counter = len(ids)
        self.identitiesList = ids
        
    def getIdentity(self,row):
        return self.identitiesList[row]
        
    def getIdentities(self):
        return self.identitiesList
        
    def append(self,id):
        self.counter += 1
        self.identitiesList.append(id)
        
    #it has been very insistent about these two
methods
    def __len__(self):
        return self.counter
        
    def __getitem__(self, key):
        return self.identitiesList[key]

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