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 @interface NSObject (UICaboodleRVBook)
  22 - (float) widthForButtonContents:(float)width;
  23 @end
  24
  25 @implementation NSObject (UICaboodleRVBook)
  26
  27 - (float) widthForButtonContents:(float)width {
  28     return width;
  29 }
  30
  31 @end
  32
  33 @interface UIImage (UICaboodleRVBook)
  34 - (float) widthForButtonContents:(float)width;
  35 @end
  36
  37 @implementation UIImage (UICaboodleRVBook)
  38
  39 - (float) widthForButtonContents:(float)width {
  40     return [self size].width + 8;
  41 }
  42
  43 @end
  44
  45 @interface RVNavigationBar : UINavigationBar {
  46 }
  47
  48 - (id) createButtonWithContents:(id)contents width:(float)width barStyle:(int)barStyle buttonStyle:(int)style isRight:(BOOL)right;
  49 @end
  50
  51 @implementation RVNavigationBar
  52
  53 - (id) createButtonWithContents:(id)contents width:(float)width barStyle:(int)barStyle buttonStyle:(int)style isRight:(BOOL)right {
  54     float adjust = [contents widthForButtonContents:width];
  55     width = adjust;
  56     return [super createButtonWithContents:contents width:width barStyle:barStyle buttonStyle:style isRight:right];
  57 }
  58
  59 @end
  60
  61 @implementation RVBook
  62
  63 - (void) dealloc {
  64     [navbar_ setDelegate:nil];
  65     if (toolbar_ != nil)
  66         [toolbar_ setDelegate:nil];
  67
  68     for (RVPage *page in pages_)
  69         [page setBook:nil];
  70
  71     [pages_ release];
  72     [navbar_ release];
  73     [transition_ release];
  74     if (toolbar_ != nil)
  75         [toolbar_ release];
  76     [super dealloc];
  77 }
  78
  79 - (UINavigationBar *) navigationBar {
  80     return navbar_;
  81 }
  82
  83 - (void) navigationBar:(UINavigationBar *)navbar buttonClicked:(int)button {
  84     _assert([pages_ count] != 0);
  85     RVPage *page = [pages_ lastObject];
  86     switch (button) {
  87         case 0: [page _rightButtonClicked]; break;
  88         case 1: [page _leftButtonClicked]; break;
  89     }
  90 }
  91
  92 - (void) navigationBar:(UINavigationBar *)navbar poppedItem:(UINavigationItem *)item {
  93     _assert([pages_ count] != 0);
  94     if (!resetting_)
  95         [[pages_ lastObject] setPageActive:NO];
  96     [pages_ removeLastObject];
  97     if (!resetting_)
  98         [self resetViewAnimated:YES toPage:[pages_ lastObject]];
  99 }
 100
 101 - (id) initWithFrame:(CGRect)frame {
 102     if ((self = [super initWithFrame:frame]) != nil) {
 103         pages_ = [[NSMutableArray arrayWithCapacity:4] retain];
 104
 105         struct CGRect bounds = [self bounds];
 106         CGSize navsize = [UINavigationBar defaultSize];
 107         CGRect navrect = {{0, 0}, navsize};
 108
 109         navbar_ = [[RVNavigationBar alloc] initWithFrame:navrect];
 110         [self addSubview:navbar_];
 111
 112         [navbar_ setBarStyle:0];
 113         [navbar_ setDelegate:self];
 114
 115         transition_ = [[UITransitionView alloc] initWithFrame:CGRectMake(
 116             bounds.origin.x, bounds.origin.y + navsize.height, bounds.size.width, bounds.size.height - navsize.height
 117         )];
 118
 119         [self addSubview:transition_];
 120     } return self;
 121 }
 122
 123 - (void) setDelegate:(id)delegate {
 124     delegate_ = delegate;
 125 }
 126
 127 - (void) setHook:(id)hook {
 128     hook_ = hook;
 129 }
 130
 131 - (void) setPage:(RVPage *)page {
 132     if ([pages_ count] != 0)
 133         [[pages_ lastObject] setPageActive:NO];
 134
 135     [navbar_ disableAnimation];
 136     resetting_ = true;
 137     for (unsigned i(0), pages([pages_ count]); i != pages; ++i)
 138         [navbar_ popNavigationItem];
 139     resetting_ = false;
 140
 141     [self pushPage:page];
 142     [navbar_ enableAnimation];
 143 }
 144
 145 - (void) swapPage:(RVPage *)page {
 146     if ([pages_ count] == 0)
 147         return [self pushPage:page];
 148
 149     [[pages_ lastObject] setPageActive:NO];
 150
 151     [navbar_ disableAnimation];
 152     resetting_ = true;
 153     [navbar_ popNavigationItem];
 154     resetting_ = false;
 155
 156     [self pushPage:page animated:NO];
 157     [navbar_ enableAnimation];
 158 }
 159
 160 - (void) pushPage:(RVPage *)page animated:(BOOL)animated {
 161     NSString *title = [self getTitleForPage:page];
 162
 163     NSString *backButtonTitle = [page backButtonTitle];
 164     if (backButtonTitle == nil)
 165         backButtonTitle = title;
 166
 167     UINavigationItem *navitem = [[[UINavigationItem alloc] initWithTitle:title] autorelease];
 168     [navitem setBackButtonTitle:backButtonTitle];
 169     [navbar_ pushNavigationItem:navitem];
 170
 171     [page setFrame:[transition_ bounds]];
 172     [transition_ transition:(animated ? 1 : 0) toView:page];
 173     [page setPageActive:YES];
 174
 175     [pages_ addObject:page];
 176     [self reloadButtonsForPage:page];
 177
 178     if ([navbar_ respondsToSelector:@selector(setAccessoryView:animate:removeOnPop:)])
 179         [navbar_ setAccessoryView:[page accessoryView] animate:animated removeOnPop:NO];
 180     else
 181         [navbar_ setAccessoryView:[page accessoryView] animate:animated];
 182 }
 183
 184 - (void) pushPage:(RVPage *)page {
 185     if ([pages_ count] != 0)
 186         [[pages_ lastObject] setPageActive:NO];
 187     [self pushPage:page animated:([pages_ count] == 0 ? NO : YES)];
 188 }
 189
 190 - (void) pushBook:(RVBook *)book {
 191     [delegate_ popUpBook:book];
 192 }
 193
 194 - (void) popPages:(unsigned)pages {
 195     if (pages == 0)
 196         return;
 197
 198     [[pages_ lastObject] setPageActive:NO];
 199
 200     resetting_ = true;
 201     for (unsigned i(0); i != pages; ++i)
 202         [navbar_ popNavigationItem];
 203     resetting_ = false;
 204
 205     [self resetViewAnimated:YES toPage:[pages_ lastObject]];
 206 }
 207
 208 - (void) resetViewAnimated:(BOOL)animated {
 209     resetting_ = true;
 210
 211     if ([pages_ count] > 1) {
 212         [navbar_ disableAnimation];
 213         while ([pages_ count] != (animated ? 2 : 1))
 214             [navbar_ popNavigationItem];
 215         [navbar_ enableAnimation];
 216         if (animated)
 217             [navbar_ popNavigationItem];
 218     }
 219
 220     resetting_ = false;
 221
 222     [self resetViewAnimated:animated toPage:[pages_ lastObject]];
 223 }
 224
 225 - (void) resetViewAnimated:(BOOL)animated toPage:(RVPage *)page {
 226     [page resetViewAnimated:animated];
 227     [page setFrame:[transition_ bounds]];
 228     [transition_ transition:(animated ? 2 : 0) toView:page];
 229     [page setPageActive:YES];
 230     [self reloadButtonsForPage:page];
 231
 232     if ([navbar_ respondsToSelector:@selector(setAccessoryView:animate:removeOnPop:)])
 233         [navbar_ setAccessoryView:[page accessoryView] animate:animated removeOnPop:NO];
 234     else
 235         [navbar_ setAccessoryView:[page accessoryView] animate:animated];
 236 }
 237
 238 - (void) setBackButtonTitle:(NSString *)title forPage:(RVPage *)page {
 239     if ([pages_ count] == 0 || page != [pages_ lastObject])
 240         return;
 241     UINavigationItem *navitem = [navbar_ topItem];
 242     [navitem setBackButtonTitle:title];
 243 }
 244
 245 - (void) reloadTitleForPage:(RVPage *)page {
 246     if ([pages_ count] == 0 || page != [pages_ lastObject])
 247         return;
 248     UINavigationItem *navitem = [navbar_ topItem];
 249     NSString *title = [self getTitleForPage:page];
 250     [navitem setTitle:title];
 251 }
 252
 253 - (void) _leftButtonTitle:(NSString *&)leftButtonTitle style:(UINavigationButtonStyle &)leftButtonStyle forPage:(RVPage *)page {
 254     leftButtonTitle = [page leftButtonTitle];
 255     leftButtonStyle = [page leftButtonStyle];
 256 }
 257
 258 - (void) reloadButtonsForPage:(RVPage *)page {
 259     if ([pages_ count] == 0 || page != [pages_ lastObject])
 260         return;
 261
 262     NSString *leftButtonTitle;
 263     UINavigationButtonStyle leftButtonStyle;
 264     [self _leftButtonTitle:leftButtonTitle style:leftButtonStyle forPage:page];
 265
 266     UINavigationButtonStyle rightButtonStyle = [page rightButtonStyle];
 267     //[navbar_ showButtonsWithLeftTitle:leftButtonTitle rightTitle:[page rightButtonTitle] leftBack:(leftButtonTitle == nil)];
 268
 269     [navbar_
 270         showLeftButton:leftButtonTitle
 271         withStyle:leftButtonStyle
 272         rightButton:[page rightButtonTitle]
 273         withStyle:rightButtonStyle
 274     ];
 275 }
 276
 277 - (NSString *) getTitleForPage:(RVPage *)page {
 278     return [page title];
 279 }
 280
 281 - (void) reloadData {
 282     size_t count([pages_ count]);
 283     for (size_t i(0); i != count; ++i) {
 284         RVPage *page([pages_ objectAtIndex:(count - i - 1)]);
 285         [page reloadData];
 286     }
 287
 288     if (count != 0) {
 289         RVPage *page([pages_ lastObject]);
 290         [self reloadButtonsForPage:page];
 291     }
 292 }
 293
 294 - (void) reloadButtons {
 295     size_t count([pages_ count]);
 296     if (count != 0) {
 297         RVPage *page([pages_ lastObject]);
 298         [self reloadButtonsForPage:page];
 299     }
 300 }
 301
 302 - (CGRect) pageBounds {
 303     return [transition_ bounds];
 304 }
 305
 306 - (void) close {
 307     if (hook_ != nil)
 308         [hook_ didCloseBook:self];
 309 }
 310
 311 @end
 312
 313 @implementation RVPopUpBook
 314
 315 - (void) _leftButtonTitle:(NSString *&)leftButtonTitle style:(UINavigationButtonStyle &)leftButtonStyle forPage:(RVPage *)page {
 316     [super _leftButtonTitle:leftButtonTitle style:leftButtonStyle forPage:page];
 317     if ((cancel_ = leftButtonTitle == nil && [pages_ count] == 1)) {
 318         leftButtonTitle = [[NSBundle mainBundle] localizedStringForKey:@"CANCEL" value:nil table:nil];
 319         leftButtonStyle = UINavigationButtonStyleNormal;
 320     }
 321 }
 322
 323 - (void) navigationBar:(UINavigationBar *)navbar buttonClicked:(int)button {
 324     if (button == 1 && cancel_)
 325         [self close];
 326     else
 327         [super navigationBar:navbar buttonClicked:button];
 328 }
 329
 330 - (void) close {
 331     [self popFromSuperviewAnimated:YES];
 332     [super close];
 333 }
 334
 335 @end