Classes/FirstDetailViewController.m

 
/*
     File: FirstDetailViewController.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 toolbar.
 
  Version: 1.2
 
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 */
 
#import "FirstDetailViewController.h"
 
@implementation FirstDetailViewController
 
// -------------------------------------------------------------------------------
//  dealloc
// -------------------------------------------------------------------------------
- (void)dealloc 
{
    self.toolbar = nil;
    self.titleLabel = 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 toolbar to either show or hide the 
//  navigationPaneBarButtonItem.
// -------------------------------------------------------------------------------
- (void)setNavigationPaneBarButtonItem:(UIBarButtonItem *)navigationPaneBarButtonItem
{
    if (navigationPaneBarButtonItem != _navigationPaneBarButtonItem) {
        if (navigationPaneBarButtonItem)
            [self.toolbar setItems:[NSArray arrayWithObject:navigationPaneBarButtonItem] animated:NO];
        else
            [self.toolbar setItems:nil 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 toolbar.
    if (_navigationPaneBarButtonItem)
        [self.toolbar setItems:[NSArray arrayWithObject:self.navigationPaneBarButtonItem] animated:NO];
}
 
// -------------------------------------------------------------------------------
//  viewWillAppear:
// -------------------------------------------------------------------------------
- (void)viewWillAppear:(BOOL)animated
{
    [super viewWillAppear:animated];
    
    self.titleLabel.text = self.title;
}
 
// -------------------------------------------------------------------------------
//  viewDidUnload:
// -------------------------------------------------------------------------------
- (void)viewDidUnload {
    [super viewDidUnload];
    self.toolbar = nil;
    self.titleLabel = nil;
}
 
#pragma mark -
#pragma mark Rotation support
 
// -------------------------------------------------------------------------------
//  shouldAutorotateToInterfaceOrientation:
// -------------------------------------------------------------------------------
- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation {
    return YES;
}
 
@end