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}, {bounds.size.width, navsize.height}};
 108
 109         navbar_ = [[RVNavigationBar alloc] initWithFrame:navrect];
 110         [navbar_ setAutoresizingMask:UIViewAutoresizingFlexibleWidth];
 111         [self addSubview:navbar_];
 112
 113         [navbar_ setBarStyle:0];
 114         [navbar_ setDelegate:self];
 115
 116         transition_ = [[UITransitionView alloc] initWithFrame:CGRectMake(
 117             bounds.origin.x, bounds.origin.y + navsize.height, bounds.size.width, bounds.size.height - navsize.height
 118         )];
 119
 120         [transition_ setAutoresizingMask:(UIViewAutoresizingFlexibleWidth | UIViewAutoresizingFlexibleHeight)];
 121
 122         [self addSubview:transition_];
 123     } return self;
 124 }
 125
 126 - (void) setDelegate:(id)delegate {
 127     delegate_ = delegate;
 128 }
 129
 130 - (void) setHook:(id)hook {
 131     hook_ = hook;
 132 }
 133
 134 - (void) setPage:(RVPage *)page {
 135     if ([pages_ count] != 0)
 136         [[pages_ lastObject] setPageActive:NO];
 137
 138     [navbar_ disableAnimation];
 139     resetting_ = true;
 140     for (unsigned i(0), pages([pages_ count]); i != pages; ++i)
 141         [navbar_ popNavigationItem];
 142     resetting_ = false;
 143
 144     [self pushPage:page];
 145     [navbar_ enableAnimation];
 146 }
 147
 148 - (void) swapPage:(RVPage *)page {
 149     if ([pages_ count] == 0)
 150         return [self pushPage:page];
 151
 152     [[pages_ lastObject] setPageActive:NO];
 153
 154     [navbar_ disableAnimation];
 155     resetting_ = true;
 156     [navbar_ popNavigationItem];
 157     resetting_ = false;
 158
 159     [self pushPage:page animated:NO];
 160     [navbar_ enableAnimation];
 161 }
 162
 163 - (void) pushPage:(RVPage *)page animated:(BOOL)animated {
 164     NSString *title = [self getTitleForPage:page];
 165
 166     NSString *backButtonTitle = [page backButtonTitle];
 167     if (backButtonTitle == nil)
 168         backButtonTitle = title;
 169
 170     UINavigationItem *navitem = [[[UINavigationItem alloc] initWithTitle:title] autorelease];
 171     [navitem setBackButtonTitle:backButtonTitle];
 172     [navbar_ pushNavigationItem:navitem];
 173
 174     [page setFrame:[transition_ bounds]];
 175     [transition_ transition:(animated ? 1 : 0) toView:page];
 176     [page setPageActive:YES];
 177
 178     [pages_ addObject:page];
 179     [self reloadButtonsForPage:page];
 180
 181     if ([navbar_ respondsToSelector:@selector(setAccessoryView:animate:removeOnPop:)])
 182         [navbar_ setAccessoryView:[page accessoryView] animate:animated removeOnPop:NO];
 183     else
 184         [navbar_ setAccessoryView:[page accessoryView] animate:animated];
 185 }
 186
 187 - (void) pushPage:(RVPage *)page {
 188     if ([pages_ count] != 0)
 189         [[pages_ lastObject] setPageActive:NO];
 190     [self pushPage:page animated:([pages_ count] == 0 ? NO : YES)];
 191 }
 192
 193 - (void) pushBook:(RVBook *)book {
 194     [delegate_ popUpBook:book];
 195 }
 196
 197 - (void) popPages:(unsigned)pages {
 198     if (pages == 0)
 199         return;
 200
 201     [[pages_ lastObject] setPageActive:NO];
 202
 203     resetting_ = true;
 204     for (unsigned i(0); i != pages; ++i)
 205         [navbar_ popNavigationItem];
 206     resetting_ = false;
 207
 208     [self resetViewAnimated:YES toPage:[pages_ lastObject]];
 209 }
 210
 211 - (void) resetViewAnimated:(BOOL)animated {
 212     resetting_ = true;
 213
 214     if ([pages_ count] > 1) {
 215         [navbar_ disableAnimation];
 216         while ([pages_ count] != (animated ? 2 : 1))
 217             [navbar_ popNavigationItem];
 218         [navbar_ enableAnimation];
 219         if (animated)
 220             [navbar_ popNavigationItem];
 221     }
 222
 223     resetting_ = false;
 224
 225     [self resetViewAnimated:animated toPage:[pages_ lastObject]];
 226 }
 227
 228 - (void) resetViewAnimated:(BOOL)animated toPage:(RVPage *)page {
 229     [page resetViewAnimated:animated];
 230     [page setFrame:[transition_ bounds]];
 231     [transition_ transition:(animated ? 2 : 0) toView:page];
 232     [page setPageActive:YES];
 233     [self reloadButtonsForPage:page];
 234
 235     if ([navbar_ respondsToSelector:@selector(setAccessoryView:animate:removeOnPop:)])
 236         [navbar_ setAccessoryView:[page accessoryView] animate:animated removeOnPop:NO];
 237     else
 238         [navbar_ setAccessoryView:[page accessoryView] animate:animated];
 239 }
 240
 241 - (void) setBackButtonTitle:(NSString *)title forPage:(RVPage *)page {
 242     if ([pages_ count] == 0 || page != [pages_ lastObject])
 243         return;
 244     UINavigationItem *navitem = [navbar_ topItem];
 245     [navitem setBackButtonTitle:title];
 246 }
 247
 248 - (void) reloadTitleForPage:(RVPage *)page {
 249     if ([pages_ count] == 0 || page != [pages_ lastObject])
 250         return;
 251     UINavigationItem *navitem = [navbar_ topItem];
 252     NSString *title = [self getTitleForPage:page];
 253     [navitem setTitle:title];
 254 }
 255
 256 - (void) _leftButtonTitle:(NSString *&)leftButtonTitle style:(UINavigationButtonStyle &)leftButtonStyle forPage:(RVPage *)page {
 257     leftButtonTitle = [page leftButtonTitle];
 258     leftButtonStyle = [page leftButtonStyle];
 259 }
 260
 261 - (void) reloadButtonsForPage:(RVPage *)page {
 262     if ([pages_ count] == 0 || page != [pages_ lastObject])
 263         return;
 264
 265     NSString *leftButtonTitle;
 266     UINavigationButtonStyle leftButtonStyle;
 267     [self _leftButtonTitle:leftButtonTitle style:leftButtonStyle forPage:page];
 268
 269     UINavigationButtonStyle rightButtonStyle = [page rightButtonStyle];
 270     //[navbar_ showButtonsWithLeftTitle:leftButtonTitle rightTitle:[page rightButtonTitle] leftBack:(leftButtonTitle == nil)];
 271
 272     [navbar_
 273         showLeftButton:leftButtonTitle
 274         withStyle:leftButtonStyle
 275         rightButton:[page rightButtonTitle]
 276         withStyle:rightButtonStyle
 277     ];
 278 }
 279
 280 - (NSString *) getTitleForPage:(RVPage *)page {
 281     return [page title];
 282 }
 283
 284 - (void) reloadData {
 285     size_t count([pages_ count]);
 286     for (size_t i(0); i != count; ++i) {
 287         RVPage *page([pages_ objectAtIndex:(count - i - 1)]);
 288         [page reloadData];
 289     }
 290
 291     if (count != 0) {
 292         RVPage *page([pages_ lastObject]);
 293         [self reloadButtonsForPage:page];
 294     }
 295 }
 296
 297 - (void) reloadButtons {
 298     size_t count([pages_ count]);
 299     if (count != 0) {
 300         RVPage *page([pages_ lastObject]);
 301         [self reloadButtonsForPage:page];
 302     }
 303 }
 304
 305 - (CGRect) pageBounds {
 306     return [transition_ bounds];
 307 }
 308
 309 - (void) close {
 310     if (hook_ != nil)
 311         [hook_ didCloseBook:self];
 312 }
 313
 314 @end
 315
 316 @implementation RVPopUpBook
 317
 318 - (void) _leftButtonTitle:(NSString *&)leftButtonTitle style:(UINavigationButtonStyle &)leftButtonStyle forPage:(RVPage *)page {
 319     [super _leftButtonTitle:leftButtonTitle style:leftButtonStyle forPage:page];
 320     if ((cancel_ = leftButtonTitle == nil && [pages_ count] == 1)) {
 321         leftButtonTitle = [[NSBundle mainBundle] localizedStringForKey:@"CANCEL" value:nil table:nil];
 322         leftButtonStyle = UINavigationButtonStyleNormal;
 323     }
 324 }
 325
 326 - (void) navigationBar:(UINavigationBar *)navbar buttonClicked:(int)button {
 327     if (button == 1 && cancel_)
 328         [self close];
 329     else
 330         [super navigationBar:navbar buttonClicked:button];
 331 }
 332
 333 - (void) close {
 334     [self popFromSuperviewAnimated:YES];
 335     [super close];
 336 }
 337
 338 @end