ImageAndTextCell rendering weirdness
ImageAndTextCell rendering weirdness
- Subject: ImageAndTextCell rendering weirdness
- From: Andrew Shamel <email@hidden>
- Date: Sat, 17 Jan 2009 10:26:28 -0800
Greetings Cocoa-Dev!
I am having the hardest time with a persistent and strange error with
Apple's ImageAndTextCell in my NSOutlineView.
I have the ImageAndTextCell set to be the outline's data cell via
NSTableColumn's -setDataCell: method, and I set the image of the cell
in the outlineView's delegate, using -
(void)outlineView:willDisplayCell:forTableColumn:item: And here's
where the trouble starts.
The problem I am encountering is this: When I have an image set in the
cell, and I go to edit the text of the *first* item in any particular
set of children, after the first keystroke, the text field goes
haywire, turning white, with the text appearing only as shadow lines,
and editing stops. If I click off the cell, the mess goes away, the
one keystroke's worth of edit remains, but does not get noticed by the
bindings.
Here is a picture of what happens: http://www.pileofdebris.com/editError.png
Does anyone have any thoughts about why this might be happening? I've
figured out that if my willDisplayCell: delegate method is empty, this
does not happen. Here is the code for that method, should it be of
any help.
- (void)outlineView:(NSOutlineView *)outlineView willDisplayCell:
(id)cell forTableColumn:(NSTableColumn *)tableColumn item:(id)item
{
NSManagedObject *node = [item representedObject];
NSString *type = [node valueForKey:@"type"];
NSString *tag = [node valueForKey:@"tag"];
if ([type isEqual:@"collection"]) {
[cell setImage:[self defaultFolderImage]];
} else if ([type isEqual:@"library"]) {
if ([tag isEqual:@"booksLibrary"]) {
[cell setImage:[self booksLibraryImage]];
} else if ([tag isEqual:@"articlesLibrary"]) {
[cell setImage:[self articlesLibraryImage]];
} else {
[cell setImage:[self articlesLibraryImage]];
}
} else if ([type isEqual:@"section"]) {
[cell setImage:nil];
[cell setEditable:NO];
[cell setSelectable:NO];
} else if ([type isEqual:@"smartCollection"]) {
[cell setImage:[self smartFolderImage]];
}
}
Thanks so much for any input people can offer.
pax,
Andy S.
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