UICaboodle/RVBook.mm

   1 #import "RVBook.h"
   2
   3 #import <UIKit/UINavigationBar.h>
   4 #import <UIKit/UINavigationItem.h>
   5
   6 #import <UIKit/UITransitionView.h>
   7
   8 #import <UIKit/UIView-Geometry.h>
   9 #import <UIKit/UIView-Hierarchy.h>
  10
  11 #import <Foundation/Foundation.h>
  12 #import <CoreGraphics/CGGeometry.h>
  13
  14 #include <cstdio>
  15 #include <cstdlib>
  16
  17 #include <errno.h>
  18
  19 #import "RVPage.h"
  20
  21 @implementation RVBook
  22
  23 - (void) dealloc {
  24     [navbar_ setDelegate:nil];
  25
  26     [pages_ release];
  27     [navbar_ release];
  28     [transition_ release];
  29     [super dealloc];
  30 }
  31
  32 - (UINavigationBar *) navigationBar {
  33     return navbar_;
  34 }
  35
  36 - (void) navigationBar:(UINavigationBar *)navbar buttonClicked:(int)button {
  37     _assert([pages_ count] != 0);
  38     RVPage *page = [pages_ lastObject];
  39     switch (button) {
  40         case 0: [page _rightButtonClicked]; break;
  41         case 1: [page _leftButtonClicked]; break;
  42     }
  43 }
  44
  45 - (void) navigationBar:(UINavigationBar *)navbar poppedItem:(UINavigationItem *)item {
  46     _assert([pages_ count] != 0);
  47     if (!resetting_)
  48         [[pages_ lastObject] setPageActive:NO];
  49     [pages_ removeLastObject];
  50     if (!resetting_)
  51         [self resetViewAnimated:YES toPage:[pages_ lastObject]];
  52 }
  53
  54 - (id) initWithFrame:(CGRect)frame {
  55     if ((self = [super initWithFrame:frame]) != nil) {
  56         pages_ = [[NSMutableArray arrayWithCapacity:4] retain];
  57
  58         struct CGRect bounds = [self bounds];
  59         CGSize navsize = [UINavigationBar defaultSize];
  60         CGRect navrect = {{0, 0}, navsize};
  61
  62         navbar_ = [[UINavigationBar alloc] initWithFrame:navrect];
  63         [self addSubview:navbar_];
  64
  65         [navbar_ setBarStyle:0];
  66         [navbar_ setDelegate:self];
  67
  68         transition_ = [[UITransitionView alloc] initWithFrame:CGRectMake(
  69             bounds.origin.x, bounds.origin.y + navsize.height, bounds.size.width, bounds.size.height - navsize.height
  70         )];
  71
  72         [self addSubview:transition_];
  73     } return self;
  74 }
  75
  76 - (void) setDelegate:(id)delegate {
  77     delegate_ = delegate;
  78 }
  79
  80 - (void) setPage:(RVPage *)page {
  81     if ([pages_ count] != 0)
  82         [[pages_ lastObject] setPageActive:NO];
  83
  84     [navbar_ disableAnimation];
  85     resetting_ = true;
  86     for (unsigned i(0), pages([pages_ count]); i != pages; ++i)
  87         [navbar_ popNavigationItem];
  88     resetting_ = false;
  89
  90     [self pushPage:page];
  91     [navbar_ enableAnimation];
  92 }
  93
  94 - (void) pushPage:(RVPage *)page {
  95     if ([pages_ count] != 0)
  96         [[pages_ lastObject] setPageActive:NO];
  97
  98     NSString *title = [self getTitleForPage:page];
  99
 100     NSString *backButtonTitle = [page backButtonTitle];
 101     if (backButtonTitle == nil)
 102         backButtonTitle = title;
 103
 104     UINavigationItem *navitem = [[[UINavigationItem alloc] initWithTitle:title] autorelease];
 105     [navitem setBackButtonTitle:backButtonTitle];
 106     [navbar_ pushNavigationItem:navitem];
 107
 108     BOOL animated = [pages_ count] == 0 ? NO : YES;
 109     [page setFrame:[transition_ bounds]];
 110     [transition_ transition:(animated ? 1 : 0) toView:page];
 111     [page setPageActive:YES];
 112
 113     [pages_ addObject:page];
 114     [self reloadButtonsForPage:page];
 115
 116     [navbar_ setAccessoryView:[page accessoryView] animate:animated removeOnPop:NO];
 117 }
 118
 119 - (void) popPages:(unsigned)pages {
 120     if (pages == 0)
 121         return;
 122
 123     [[pages_ lastObject] setPageActive:NO];
 124
 125     resetting_ = true;
 126     for (unsigned i(0); i != pages; ++i)
 127         [navbar_ popNavigationItem];
 128     resetting_ = false;
 129
 130     [self resetViewAnimated:YES toPage:[pages_ lastObject]];
 131 }
 132
 133 - (void) resetViewAnimated:(BOOL)animated {
 134     resetting_ = true;
 135
 136     if ([pages_ count] > 1) {
 137         [navbar_ disableAnimation];
 138         while ([pages_ count] != (animated ? 2 : 1))
 139             [navbar_ popNavigationItem];
 140         [navbar_ enableAnimation];
 141         if (animated)
 142             [navbar_ popNavigationItem];
 143     }
 144
 145     resetting_ = false;
 146
 147     [self resetViewAnimated:animated toPage:[pages_ lastObject]];
 148 }
 149
 150 - (void) resetViewAnimated:(BOOL)animated toPage:(RVPage *)page {
 151     [page resetViewAnimated:animated];
 152     [page setFrame:[transition_ bounds]];
 153     [transition_ transition:(animated ? 2 : 0) toView:page];
 154     [page setPageActive:YES];
 155     [self reloadButtonsForPage:page];
 156
 157     [navbar_ setAccessoryView:[page accessoryView] animate:animated removeOnPop:NO];
 158 }
 159
 160 - (void) setBackButtonTitle:(NSString *)title forPage:(RVPage *)page {
 161     if ([pages_ count] == 0 || page != [pages_ lastObject])
 162         return;
 163     UINavigationItem *navitem = [navbar_ topItem];
 164     [navitem setBackButtonTitle:title];
 165 }
 166
 167 - (void) reloadTitleForPage:(RVPage *)page {
 168     if ([pages_ count] == 0 || page != [pages_ lastObject])
 169         return;
 170     UINavigationItem *navitem = [navbar_ topItem];
 171     NSString *title = [self getTitleForPage:page];
 172     [navitem setTitle:title];
 173 }
 174
 175 - (void) reloadButtonsForPage:(RVPage *)page {
 176     if ([pages_ count] == 0 || page != [pages_ lastObject])
 177         return;
 178     NSString *leftButtonTitle([page leftButtonTitle]);
 179     UINavigationButtonStyle leftButtonStyle = [page leftButtonStyle];
 180     UINavigationButtonStyle rightButtonStyle = [page rightButtonStyle];
 181     //[navbar_ showButtonsWithLeftTitle:leftButtonTitle rightTitle:[page rightButtonTitle] leftBack:(leftButtonTitle == nil)];
 182
 183     [navbar_
 184         showLeftButton:leftButtonTitle
 185         withStyle:leftButtonStyle
 186         rightButton:[page rightButtonTitle]
 187         withStyle:rightButtonStyle
 188     ];
 189 }
 190
 191 - (NSString *) getTitleForPage:(RVPage *)page {
 192     return [page title];
 193 }
 194
 195 - (void) reloadData {
 196     for (int i(0), e([pages_ count]); i != e; ++i) {
 197         RVPage *page([pages_ objectAtIndex:(e - i - 1)]);
 198         [page reloadData];
 199     }
 200 }
 201
 202 - (CGRect) pageBounds {
 203     return [transition_ bounds];
 204 }
 205
 206 @end