Yes forgot to say that I've a data source for the outline view….
My OvItem.h class looks like this:
#import <Cocoa/Cocoa.h>
@interface OvItem : NSObject {
NSString *title;
NSMutableArray *children;
BOOL isParent;
}
@property (nonatomic, readwrite, copy) NSString *title;
@property (retain, nonatomic, readwrite) NSMutableArray *children;
@property (nonatomic, assign) BOOL isParent;
// Initialization methods
- (id)initLeafWithTitle:(NSString *)theTitle;
- (id)initParentWithTitle:(NSString *)theTitle children:(NSMutableArray
*)theChildren;
// Child access methods
- (NSInteger)numberOfChildren;
- (OvItem *)childAtIndex:(NSUInteger)theIndex;
and the implementation like this:
#import "OvItem.h"
@implementation OvItem
@synthesize title;
@synthesize children;
@synthesize isParent;
// Create the 'leaf' node (a node with no subnodes)
- (id)initLeafWithTitle:(NSString *)theTitle {
if(self = [super init])
{
self.title = theTitle;
self.children = nil;
self.isParent = NO;
}
return self;
}
// Create a 'parent' node (a node with subnodes)
- (id)initParentWithTitle:(NSString *)theTitle children:(NSMutableArray
*)theChildren {
if(self = [super init])
{
self.title = theTitle;
self.children = (theChildren != nil ? theChildren :
[NSMutableArray array] );
self.isParent = YES;
}
return self;
}
-(id)init
{
[super init];
children = [[NSMutableArray alloc] init];
title = @"New_Item";
return self;
}
// Getting the number of children a node has (needed for the sidebar datasource
methods)
- (NSInteger)numberOfChildren {
return [self.children count];
}
// Getting a given child (needed for the sidebar datasource methods)
- (OvItem *)childAtIndex:(NSUInteger)theIndex {
return [self.children objectAtIndex:theIndex];
}
-(void) dealloc
{
self.title = nil;
self.children = nil;
//[children release];
//[title release];
[super dealloc];
}
On Sep 2, 2011, at 2:35 PM, Michael Babin wrote:
> On Sep 2, 2011, at 7:15 AM, Gilles Celli wrote:
>
>> I've setup a Document based application with an NSOutlineView which
>> displays Parent-Item along with its children…with XCode 4 on OS X Lion.
>>
>> When launching the application, the outline view shows the Root title…only
>> if I refresh the outline view the children are displayed too.
>>
>> I've also tried to do a reloadData along with reloadItem:nil
>> reloadChildren:YES for the OutlineView (in method windowDidLoad and tried
>> also
>> (void)applicationDidFinishLaunching: ) but this doesn't fix it…
>>
>> However I've setup a NSButton to refresh the outlineView which then calls
>> 'reloadData' and 'reloadItem:nil reloadChildren:YES' and then it works…
>> but this is of course not the solution I want…
>
> This sounds like a problem of not having the data structure(s)
> initialized/populated/connected when the outline view asks for the items to
> be displayed, and then not notifying the outline view that it needs to reload
> when the data is actually available.
>
> I assume you're using a data source for your outline view? If so, try setting
> a breakpoint on your -outlineView:numberOfChildrenOfItem: method to see when
> the outline view is asking for the data, and then look at the source of that
> data to figure out why it is not available at that point (and when it is
> available).
>
_______________________________________________
Cocoa-dev mailing list (Cocoa-dev@lists.apple.com)
Please do not post admin requests or moderator comments to the list.
Contact the moderators at cocoa-dev-admins(at)lists.apple.com
Help/Unsubscribe/Update your Subscription:
http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com
This email sent to arch...@mail-archive.com
