[Cocoa] How to switch views in a "toolbar" application

Question

Hi everybody.
I have a window with a toolbar with 3 buttons. Each of this button represent a view. I'm having problems switching view.
I have 3 different NSViewController (one for each view) and a NSWindowController that manages only the switching.
With the current code the switch works, but the animation is terrible!
I've already took a look to the example BasicCocoaAnimations, but if I use that code, my views can't keep the origin, and also the size change every time a switch the view.
This is my code:
[code]
- (IBAction)showTenants:(id)sender {   
    if (currentViewController && currentViewController == tenantsViewController)
        return;
    if (!tenantsViewController) {
        tenantsViewController = [[TenantsViewController alloc] init];
        tenantsViewController.managedObjectContext = self.managedObjectContext;
    [NSAnimationContext beginGrouping];
    if (currentViewController) {
        [[[self.window contentView] animator] replaceSubview:currentViewController.view with:tenantsViewController.view];
    else {
        [[[self.window contentView] animator] addSubview:tenantsViewController.view];
    [self.window setFrame:[self newFrameForNewContentFrame:tenantsViewController.defaultFrame]
                  display:YES animate:YES];
    [tenantsViewController.view setFrame:[tenantsViewController defaultFrame]];
    [NSAnimationContext endGrouping];
    currentViewController = tenantsViewController;
- (NSRect)newFrameForNewContentFrame:(NSRect)contentFrame {
    NSRect newFrameRect = [self.window frameRectForContentRect:contentFrame];
    NSRect oldFrameRect = [self.window frame];
    NSSize newSize = newFrameRect.size;
    NSSize oldSize = oldFrameRect.size;
    NSRect frame = [self.window frame];
    frame.size = newSize;
    frame.origin.y -= (newSize.height - oldSize.height);
    return frame;
[/code]
The defaultFrame method simply returns a NSRect with the statical size and origin (retrieved from IB)... this is the only way I managed to fix the size problem...
Any help in improving the code?
Thanks
Francesco

Answer 1

Nobody?