Creating an iTunes Style NSOutlineView

Question

Hey There,
i'm trying to create a menu similar to the one you would see in itunes, an NSOutlineView where the children have icons and the roots have a different font, etc.
1. 1st question is if anyone has seen a full tutorial on creating this, that would be a big help but in the absence of that i have a more detailed question
2. I have been able to create a subclass of NSTextFieldCell that draws the textfield and an icon, and i was able to create an xml file that is loaded and populates the outlineview with certain variables (like the ability for a node to be selected, expanded, etc) One of the things i would like to do is similar to iTunes 'LIBRARY' node. It is always expanded and cannot be collapsed. So i created some variables and put them into the XML. here is some code from my project:
*- (void)outlineView:(NSOutlineView *)anOutlineView willDisplayCell:(NSCell *)cell forTableColumn:(NSTableColumn *)tableColumn item:(id)item*
* NSTreeNode *treeNode = item;*
* OutlineItem *nodeData = [treeNode representedObject];*
*if ((tableColumn == nil) || [[tableColumn identifier] isEqualToString:@"titleColumn"]) { *
*// Make sure the image and text cell has an image. If not, lazily fill in a random image*
*if (nodeData.iconImage == nil) {*
*nodeData.iconImage = [NSImage imageNamed:@"2.icns"];*
*// We know that the cell at this column is our image and text cell, so grab it*
*ImageAndTextCell *imageAndTextCell = (ImageAndTextCell )cell;
*// Set the image here since the value returned from outlineView:objectValueForTableColumn:... didn't specify the image part...*
*[imageAndTextCell setImage:nodeData.iconImage];*
* // Here's one - we need to make sure an "Expanded" column has been expanded, i know.*
* if (nodeData.isExpanded && ![anOutlineView isItemExpanded:item])*
* [anOutlineView expandItem:item];*
* [anOutlineView reloadItem:item reloadChildren:YES];*
* [anOutlineView setNeedsDisplay:YES];*
* //[anOutlineView reloadData];*
So here is the problem: this code will force anything in the XML file marked as "isExpanded" to expand on the first run, but for some reason, only the first 4 nodes get drawn, the rest of the nodes are there, but not visible until you click on them. Any thoughts on this?
PS - sorry for the weird formatting
Message was edited by: Joshua Chudnovsky
Message was edited by: Joshua Chudnovsky

Answer 1

I think you have to log in using your account, enter the codes etc. for the gift card, and then the credit amount appears and she will be able to download the music. I did the same for my stepson, who is 16. An employee at the Apple store told me to do this and said when he is old enough to get his own credit card he can set up an account and the music he already has will play. Yes, I think that a credit card is 100% necessary and I presume that legally it forces you to be respponsible, as a parent, for your child's downloads as they cannot have a credit card under 18, at least under English law, and presumably, in other countries such as the USA, it is the same.