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