/*

     File: SecondDetailViewController.m

 Abstract: A simple view controller that adopts the SubstitutableDetailViewController protocol defined by DetailViewManager.

 It's responsible for adding and removing the popover button in response to rotation. This view controller uses a navigation bar.

  Version: 1.2

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 */

#import "SecondDetailViewController.h"

@implementation SecondDetailViewController

// -------------------------------------------------------------------------------

//  dealloc

// -------------------------------------------------------------------------------

- (void)dealloc 

{

    self.navigationBar = nil;

    self.navigationPaneBarButtonItem = nil;

    [super dealloc];

}

#pragma mark -

#pragma mark SubstitutableDetailViewController

// -------------------------------------------------------------------------------

//  setNavigationPaneBarButtonItem:

//  Custom implementation for the navigationPaneBarButtonItem setter.

//  In addition to updating the _navigationPaneBarButtonItem ivar, it

//  reconfigures the navigationBar to either show or hide the 

//  navigationPaneBarButtonItem.

// -------------------------------------------------------------------------------

- (void)setNavigationPaneBarButtonItem:(UIBarButtonItem *)navigationPaneBarButtonItem

{

    if (navigationPaneBarButtonItem != _navigationPaneBarButtonItem) {

        // Add the popover button to the left navigation item.

        [self.navigationBar.topItem setLeftBarButtonItem:navigationPaneBarButtonItem

                                                animated:NO];

        [_navigationPaneBarButtonItem release];

        _navigationPaneBarButtonItem = [navigationPaneBarButtonItem retain];

    }

}

#pragma mark -

#pragma mark View lifecycle

// -------------------------------------------------------------------------------

//  viewDidLoad:

// -------------------------------------------------------------------------------

- (void)viewDidLoad

{

    // -setNavigationPaneBarButtonItem may have been invoked when before the

    // interface was loaded.  This will occur when setNavigationPaneBarButtonItem

    // is called as part of DetailViewManager preparing this view controller

    // for presentation as this is before the view is unarchived from the NIB.

    // When viewidLoad is invoked, the interface is loaded and hooked up.

    // Check if we are supposed to be displaying a navigationPaneBarButtonItem

    // and if so, add it to the navigationBar.

    if (self.navigationPaneBarButtonItem)

        [self.navigationBar.topItem setLeftBarButtonItem:self.navigationPaneBarButtonItem

                                                animated:NO];

}

// -------------------------------------------------------------------------------

//  viewWillAppear:

// -------------------------------------------------------------------------------

- (void)viewWillAppear:(BOOL)animated

{

    [super viewWillAppear:animated];

    self.navigationBar.topItem.title = self.title;

}

// -------------------------------------------------------------------------------

//  viewDidUnload:

// -------------------------------------------------------------------------------

- (void)viewDidUnload {

    [super viewDidUnload];

    self.navigationBar = nil;

}

#pragma mark -

#pragma mark Rotation support

// -------------------------------------------------------------------------------

//  shouldAutorotateToInterfaceOrientation:

// -------------------------------------------------------------------------------

- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation {

    return YES;

}

@end