Re: [Pyobjc-dev] problem with NSTableView

[<bo...@pa...>]

there are issues right off the bat that you will need to
resolve:

first, declare the "informal" protocol NSTableDataSource, like
this:

	class entityTable(AutoBaseClass, NSTableDataSource):

second, there are enough bugs in 0.8 with NSTables, that you are better
off building from scratch out of the CVS depot. make sure you build FFI
first and follow the FFI build/install instructions exactly [especially
the part about creating and cd'ing into the build directory].

--bob



On Thursday, March 13, 2003, at 11:56 AM, chris bunker wrote:

> 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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