iOS/Tombo/Tombo/DetailViewController.m

   1 #import "DetailViewController.h"
   2 #import "MasterViewController.h"
   3
   4 @interface DetailViewController () {
   5     BOOL isModify;
   6 }
   7 @property (strong, nonatomic) UIPopoverController *masterPopoverController;
   8 - (void)configureView;
   9 @end
  10
  11 @implementation DetailViewController
  12
  13 @synthesize detailItem = _detailItem;
  14 @synthesize storage;
  15 @synthesize detailText = _detailText;
  16 @synthesize masterPopoverController = _masterPopoverController;
  17
  18 #pragma mark - Managing the detail item
  19
  20 - (void)setDetailItem:(id)newDetailItem
  21 {
  22     if (_detailItem != newDetailItem) {
  23         _detailItem = newDetailItem;
  24
  25         // Update the view.
  26         [self configureView];
  27     }
  28
  29     if (self.masterPopoverController != nil) {
  30         [self.masterPopoverController dismissPopoverAnimated:YES];
  31     }
  32 }
  33
  34 - (void)configureView
  35 {
  36     NSString *noteData;
  37     if (self.detailItem && self.detailItem.path) {
  38         NSError *error;
  39         noteData = [NSString stringWithContentsOfFile:self.detailItem.path
  40                                              encoding:NSUTF8StringEncoding
  41                                                 error:&error];
  42         if (error) return;
  43     } else {
  44         noteData = @"";
  45     }
  46     self.detailText.text = noteData;
  47 }
  48
  49 - (void)viewDidLoad
  50 {
  51     [super viewDidLoad];
  52         // Do any additional setup after loading the view, typically from a nib.
  53     NSNotificationCenter *notify = [NSNotificationCenter defaultCenter];
  54     [notify addObserver:self
  55                selector:@selector(keyboardDidShow:)
  56                    name:UIKeyboardDidShowNotification
  57                  object:nil];
  58
  59     [notify addObserver:self
  60                selector:@selector(keyboardDidHide:)
  61                    name:UIKeyboardDidHideNotification
  62                  object:nil];
  63
  64     self.detailText.delegate = self;
  65     [self configureView];
  66     isModify = NO;
  67 }
  68
  69 - (void)viewDidUnload
  70 {
  71     [self setDetailText:nil];
  72     self.detailItem = nil;
  73     self.storage = nil;
  74     [super viewDidUnload];
  75 }
  76
  77 - (void)viewWillDisappear:(BOOL)animated {
  78     // Leaving detail view
  79     if (isModify) {
  80         NSString *note = self.detailText.text;
  81         FileItem *newPath = [storage save:note item: self.detailItem];
  82
  83         // To notify master view, retract reference from navigation controller.
  84         MasterViewController *master = [self.navigationController.viewControllers objectAtIndex:0];
  85
  86         if (self.detailItem.name) {
  87             // item exists
  88             if (self.detailItem != newPath) {
  89                 [master itemChanged: self.detailItem to:newPath];
  90             }
  91         } else {
  92             // new item
  93             [master itemAdded: newPath];
  94         }
  95     }
  96
  97     [super viewWillDisappear: animated];
  98 }
  99
 100 - (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation
 101 {
 102     if ([[UIDevice currentDevice] userInterfaceIdiom] == UIUserInterfaceIdiomPhone) {
 103         return (interfaceOrientation != UIInterfaceOrientationPortraitUpsideDown);
 104     } else {
 105         return YES;
 106     }
 107 }
 108
 109 - (void)textViewDidChange:(UITextView *)textView {
 110     isModify = YES;
 111 }
 112
 113 #pragma mark - Notification handler
 114
 115 - (void)keyboardDidShow:(NSNotification*)notification {
 116     NSDictionary *info = [notification userInfo];
 117
 118     CGRect beginRect = [self.detailText convertRect:[[info objectForKey:UIKeyboardFrameBeginUserInfoKey] CGRectValue] fromView:nil];
 119     CGRect rect = [self.detailText convertRect:[[info objectForKey:UIKeyboardFrameEndUserInfoKey] CGRectValue] fromView:nil];
 120     CGRect frame = self.detailText.frame;
 121
 122     if (beginRect.size.height == rect.size.height) {
 123         // slide in
 124         frame.size.height -= rect.size.height;
 125     } else {
 126         // keyboard change
 127         frame.size.height -= (rect.size.height - beginRect.size.height);
 128     }
 129     self.detailText.frame = frame;
 130
 131 }
 132
 133 - (void)keyboardDidHide:(NSNotification*)notification {
 134
 135     NSDictionary *info = [notification userInfo];
 136
 137     CGRect rect = [self.detailText convertRect:[[info objectForKey:UIKeyboardFrameEndUserInfoKey] CGRectValue] fromView:nil];
 138     CGRect frame = self.detailText.frame;
 139
 140     frame.size.height += rect.size.height;
 141     self.detailText.frame = frame;
 142 }
 143
 144 #pragma mark - Split view
 145
 146 - (void)splitViewController:(UISplitViewController *)splitController willHideViewController:(UIViewController *)viewController withBarButtonItem:(UIBarButtonItem *)barButtonItem forPopoverController:(UIPopoverController *)popoverController
 147 {
 148     barButtonItem.title = NSLocalizedString(@"Master", @"Master");
 149     [self.navigationItem setLeftBarButtonItem:barButtonItem animated:YES];
 150     self.masterPopoverController = popoverController;
 151 }
 152
 153 - (void)splitViewController:(UISplitViewController *)splitController willShowViewController:(UIViewController *)viewController invalidatingBarButtonItem:(UIBarButtonItem *)barButtonItem
 154 {
 155     // Called when the view is shown again in the split view, invalidating the button and popover controller.
 156     [self.navigationItem setLeftBarButtonItem:nil animated:YES];
 157     self.masterPopoverController = nil;
 158 }
 159
 160 @end