CyteKit/WebViewController.mm

   1 #include "CyteKit/UCPlatform.h"
   2 #include "CyteKit/WebViewController.h"
   3
   4 #include "CyteKit/MFMailComposeViewController-MailToURL.h"
   5
   6 #include "iPhonePrivate.h"
   7
   8 #include "CyteKit/Localize.h"
   9 #include "CyteKit/WebViewController.h"
  10 #include "CyteKit/PerlCompatibleRegEx.hpp"
  11 #include "CyteKit/WebThreadLocked.hpp"
  12
  13 //#include <QuartzCore/CALayer.h>
  14 // XXX: fix the minimum requirement
  15 extern NSString * const kCAFilterNearest;
  16
  17 #include <WebCore/WebCoreThread.h>
  18
  19 #include <WebKit/WebPreferences.h>
  20
  21 #include <WebKit/DOMCSSPrimitiveValue.h>
  22 #include <WebKit/DOMCSSStyleDeclaration.h>
  23 #include <WebKit/DOMDocument.h>
  24 #include <WebKit/DOMHTMLBodyElement.h>
  25 #include <WebKit/DOMRGBColor.h>
  26
  27 #define ForSaurik 0
  28 #define DefaultTimeout_ 120.0
  29
  30 #define ShowInternals 0
  31 #define LogBrowser 0
  32 #define LogMessages 0
  33
  34 #define lprintf(args...) fprintf(stderr, args)
  35
  36 // XXX: centralize these special class things to some file or mechanism?
  37 static Class $MFMailComposeViewController;
  38
  39 template <typename Type_>
  40 static inline void CYRelease(Type_ &value) {
  41     if (value != nil) {
  42         [value release];
  43         value = nil;
  44     }
  45 }
  46
  47 float CYScrollViewDecelerationRateNormal;
  48
  49 @interface WebView (Apple)
  50 - (void) _setLayoutInterval:(float)interval;
  51 - (void) _setAllowsMessaging:(BOOL)allows;
  52 @end
  53
  54 @interface WebPreferences (Apple)
  55 + (void) _setInitialDefaultTextEncodingToSystemEncoding;
  56 - (void) _setLayoutInterval:(NSInteger)interval;
  57 - (void) setOfflineWebApplicationCacheEnabled:(BOOL)enabled;
  58 @end
  59
  60 /* Indirect Delegate {{{ */
  61 @interface IndirectDelegate : NSObject {
  62     _transient volatile id delegate_;
  63 }
  64
  65 - (void) setDelegate:(id)delegate;
  66 - (id) initWithDelegate:(id)delegate;
  67 @end
  68
  69 @implementation IndirectDelegate
  70
  71 - (void) setDelegate:(id)delegate {
  72     delegate_ = delegate;
  73 }
  74
  75 - (id) initWithDelegate:(id)delegate {
  76     delegate_ = delegate;
  77     return self;
  78 }
  79
  80 - (IMP) methodForSelector:(SEL)sel {
  81     if (IMP method = [super methodForSelector:sel])
  82         return method;
  83     fprintf(stderr, "methodForSelector:[%s] == NULL\n", sel_getName(sel));
  84     return NULL;
  85 }
  86
  87 - (BOOL) respondsToSelector:(SEL)sel {
  88     if ([super respondsToSelector:sel])
  89         return YES;
  90
  91     // XXX: WebThreadCreateNSInvocation returns nil
  92
  93 #if ShowInternals
  94     fprintf(stderr, "[%s]R?%s\n", class_getName(self->isa), sel_getName(sel));
  95 #endif
  96
  97     return delegate_ == nil ? NO : [delegate_ respondsToSelector:sel];
  98 }
  99
 100 - (NSMethodSignature *) methodSignatureForSelector:(SEL)sel {
 101     if (NSMethodSignature *method = [super methodSignatureForSelector:sel])
 102         return method;
 103
 104 #if ShowInternals
 105     fprintf(stderr, "[%s]S?%s\n", class_getName(self->isa), sel_getName(sel));
 106 #endif
 107
 108     if (delegate_ != nil)
 109         if (NSMethodSignature *sig = [delegate_ methodSignatureForSelector:sel])
 110             return sig;
 111
 112     // XXX: I fucking hate Apple so very very bad
 113     return [NSMethodSignature signatureWithObjCTypes:"v@:"];
 114 }
 115
 116 - (void) forwardInvocation:(NSInvocation *)inv {
 117     SEL sel = [inv selector];
 118     if (delegate_ != nil && [delegate_ respondsToSelector:sel])
 119         [inv invokeWithTarget:delegate_];
 120 }
 121
 122 @end
 123 /* }}} */
 124
 125 @implementation CyteWebViewController
 126
 127 #if ShowInternals
 128 #include "CyteKit/UCInternal.h"
 129 #endif
 130
 131 + (void) _initialize {
 132     [WebPreferences _setInitialDefaultTextEncodingToSystemEncoding];
 133
 134     dlopen("/System/Library/Frameworks/MessageUI.framework/MessageUI", RTLD_GLOBAL | RTLD_LAZY);
 135     $MFMailComposeViewController = objc_getClass("MFMailComposeViewController");
 136
 137     if (float *_UIScrollViewDecelerationRateNormal = reinterpret_cast<float *>(dlsym(RTLD_DEFAULT, "UIScrollViewDecelerationRateNormal")))
 138         CYScrollViewDecelerationRateNormal = *_UIScrollViewDecelerationRateNormal;
 139     else // XXX: this actually might be fast on some older systems: we should look into this
 140         CYScrollViewDecelerationRateNormal = 0.998;
 141 }
 142
 143 - (void) dealloc {
 144 #if LogBrowser
 145     NSLog(@"[CyteWebViewController dealloc]");
 146 #endif
 147
 148     [webview_ setDelegate:nil];
 149
 150     [indirect_ setDelegate:nil];
 151     [indirect_ release];
 152
 153     if (challenge_ != nil)
 154         [challenge_ release];
 155
 156     if (title_ != nil)
 157         [title_ release];
 158
 159     if ([loading_ count] != 0)
 160         [delegate_ releaseNetworkActivityIndicator];
 161     [loading_ release];
 162
 163     [reloaditem_ release];
 164     [loadingitem_ release];
 165
 166     [indicator_ release];
 167
 168     [super dealloc];
 169 }
 170
 171 - (NSURL *) URLWithURL:(NSURL *)url {
 172     return url;
 173 }
 174
 175 - (NSURLRequest *) requestWithURL:(NSURL *)url cachePolicy:(NSURLRequestCachePolicy)policy {
 176     return [NSURLRequest
 177         requestWithURL:[self URLWithURL:url]
 178         cachePolicy:policy
 179         timeoutInterval:DefaultTimeout_
 180     ];
 181 }
 182
 183 - (void) setURL:(NSURL *)url {
 184     _assert(request_ == nil);
 185     request_ = [self requestWithURL:url cachePolicy:NSURLRequestUseProtocolCachePolicy];
 186 }
 187
 188 - (void) loadURL:(NSURL *)url cachePolicy:(NSURLRequestCachePolicy)policy {
 189     [self loadRequest:[self requestWithURL:url cachePolicy:policy]];
 190 }
 191
 192 - (void) loadURL:(NSURL *)url {
 193     [self loadURL:url cachePolicy:NSURLRequestUseProtocolCachePolicy];
 194 }
 195
 196 - (void) loadRequest:(NSURLRequest *)request {
 197 #if LogBrowser
 198     NSLog(@"loadRequest:%@", request);
 199 #endif
 200
 201     error_ = false;
 202
 203     WebThreadLocked lock;
 204     [webview_ loadRequest:request];
 205 }
 206
 207 - (void) reloadURLWithCache:(BOOL)cache {
 208     if (request_ == nil)
 209         return;
 210
 211     NSMutableURLRequest *request([request_ mutableCopy]);
 212     [request setCachePolicy:(cache ? NSURLRequestUseProtocolCachePolicy : NSURLRequestReloadIgnoringLocalCacheData)];
 213
 214     request_ = request;
 215
 216     if ([request_ HTTPBody] == nil && [request_ HTTPBodyStream] == nil)
 217         [self loadRequest:request_];
 218     else {
 219         UIAlertView *alert = [[[UIAlertView alloc]
 220             initWithTitle:UCLocalize("RESUBMIT_FORM")
 221             message:nil
 222             delegate:self
 223             cancelButtonTitle:UCLocalize("CANCEL")
 224             otherButtonTitles:
 225                 UCLocalize("SUBMIT"),
 226             nil
 227         ] autorelease];
 228
 229         [alert setContext:@"submit"];
 230         [alert show];
 231     }
 232 }
 233
 234 - (void) reloadURL {
 235     [self reloadURLWithCache:YES];
 236 }
 237
 238 - (void) reloadData {
 239     [super reloadData];
 240     [self reloadURLWithCache:YES];
 241 }
 242
 243 - (void) setButtonImage:(NSString *)button withStyle:(NSString *)style toFunction:(id)function {
 244     custom_ = button;
 245     style_ = style;
 246     function_ = function;
 247
 248     [self performSelectorOnMainThread:@selector(applyRightButton) withObject:nil waitUntilDone:NO];
 249 }
 250
 251 - (void) setButtonTitle:(NSString *)button withStyle:(NSString *)style toFunction:(id)function {
 252     custom_ = button;
 253     style_ = style;
 254     function_ = function;
 255
 256     [self performSelectorOnMainThread:@selector(applyRightButton) withObject:nil waitUntilDone:NO];
 257 }
 258
 259 - (void) removeButton {
 260     custom_ = [NSNull null];
 261     [self performSelectorOnMainThread:@selector(applyRightButton) withObject:nil waitUntilDone:NO];
 262 }
 263
 264 - (void) scrollToBottomAnimated:(NSNumber *)animated {
 265     CGSize size([scroller_ contentSize]);
 266     CGPoint offset([scroller_ contentOffset]);
 267     CGRect frame([scroller_ frame]);
 268
 269     if (size.height - offset.y < frame.size.height + 20.f) {
 270         CGRect rect = {{0, size.height-1}, {size.width, 1}};
 271         [scroller_ scrollRectToVisible:rect animated:[animated boolValue]];
 272     }
 273 }
 274
 275 - (void) _setViewportWidth {
 276     [[webview_ _documentView] setViewportSize:CGSizeMake(width_, UIWebViewGrowsAndShrinksToFitHeight) forDocumentTypes:0x10];
 277 }
 278
 279 - (void) setViewportWidth:(float)width {
 280     width_ = width != 0 ? width : [[self class] defaultWidth];
 281     [self _setViewportWidth];
 282 }
 283
 284 - (void) _setViewportWidthOnMainThread:(NSNumber *)width {
 285     [self setViewportWidth:[width floatValue]];
 286 }
 287
 288 - (void) setViewportWidthOnMainThread:(float)width {
 289     [self performSelectorOnMainThread:@selector(_setViewportWidthOnMainThread:) withObject:[NSNumber numberWithFloat:width] waitUntilDone:NO];
 290 }
 291
 292 - (void) webViewUpdateViewSettings:(UIWebView *)view {
 293     [self _setViewportWidth];
 294 }
 295
 296 - (void) mailComposeController:(MFMailComposeViewController*)controller didFinishWithResult:(MFMailComposeResult)result error:(NSError*)error {
 297     [self dismissModalViewControllerAnimated:YES];
 298 }
 299
 300 - (void) _openMailToURL:(NSURL *)url {
 301     if ($MFMailComposeViewController != nil && [$MFMailComposeViewController canSendMail]) {
 302         MFMailComposeViewController *controller([[[$MFMailComposeViewController alloc] init] autorelease]);
 303         [controller setMailComposeDelegate:self];
 304
 305         [controller setMailToURL:url];
 306
 307         [self presentModalViewController:controller animated:YES];
 308         return;
 309     }
 310
 311     UIApplication *app([UIApplication sharedApplication]);
 312     if ([app respondsToSelector:@selector(openURL:asPanel:)])
 313         [app openURL:url asPanel:YES];
 314     else
 315         [app openURL:url];
 316 }
 317
 318 - (bool) _allowJavaScriptPanel {
 319     return true;
 320 }
 321
 322 - (bool) allowsNavigationAction {
 323     return allowsNavigationAction_;
 324 }
 325
 326 - (void) setAllowsNavigationAction:(bool)value {
 327     allowsNavigationAction_ = value;
 328 }
 329
 330 - (void) setAllowsNavigationActionByNumber:(NSNumber *)value {
 331     [self setAllowsNavigationAction:[value boolValue]];
 332 }
 333
 334 - (void) popViewControllerWithNumber:(NSNumber *)value {
 335     UINavigationController *navigation([self navigationController]);
 336     if ([navigation topViewController] == self)
 337         [navigation popViewControllerAnimated:[value boolValue]];
 338 }
 339
 340 - (void) _didFailWithError:(NSError *)error forFrame:(WebFrame *)frame {
 341     [loading_ removeObject:[NSValue valueWithNonretainedObject:frame]];
 342     [self _didFinishLoading];
 343
 344     if ([error code] == NSURLErrorCancelled)
 345         return;
 346
 347     if ([frame parentFrame] == nil) {
 348         [self loadURL:[NSURL URLWithString:[NSString stringWithFormat:@"%@?%@",
 349             [[NSURL fileURLWithPath:[[NSBundle mainBundle] pathForResource:@"error" ofType:@"html"]] absoluteString],
 350             [[error localizedDescription] stringByAddingPercentEscapes]
 351         ]]];
 352
 353         error_ = true;
 354     }
 355 }
 356
 357 - (void) pushRequest:(NSURLRequest *)request asPop:(bool)pop {
 358     NSURL *url([request URL]);
 359
 360     // XXX: filter to internal usage?
 361     CyteViewController *page([delegate_ pageForURL:url forExternal:NO]);
 362
 363     if (page == nil) {
 364         CyteWebViewController *browser([[[class_ alloc] init] autorelease]);
 365         [browser loadRequest:request];
 366         page = browser;
 367     }
 368
 369     [page setDelegate:delegate_];
 370
 371     if (!pop) {
 372         [[self navigationItem] setTitle:title_];
 373
 374         [[self navigationController] pushViewController:page animated:YES];
 375     } else {
 376         UINavigationController *navigation([[[UINavigationController alloc] initWithRootViewController:page] autorelease]);
 377
 378         [navigation setDelegate:delegate_];
 379
 380         [[page navigationItem] setLeftBarButtonItem:[[[UIBarButtonItem alloc]
 381             initWithTitle:UCLocalize("CLOSE")
 382             style:UIBarButtonItemStylePlain
 383             target:page
 384             action:@selector(close)
 385         ] autorelease]];
 386
 387         [delegate_ unloadData];
 388
 389         [[self navigationController] presentModalViewController:navigation animated:YES];
 390     }
 391 }
 392
 393 // CyteWebViewDelegate {{{
 394 - (void) webView:(WebView *)view addMessageToConsole:(NSDictionary *)message {
 395 #if LogMessages
 396     static Pcre irritating("^(?:The page at .* displayed insecure content from .*\\.|Unsafe JavaScript attempt to access frame with URL .* from frame with URL .*\\. Domains, protocols and ports must match\\.)\\n$");
 397     if (NSString *data = [message objectForKey:@"message"])
 398         if (irritating(data))
 399             return;
 400
 401     NSLog(@"addMessageToConsole:%@", message);
 402 #endif
 403 }
 404
 405 - (void) webView:(WebView *)view decidePolicyForNavigationAction:(NSDictionary *)action request:(NSURLRequest *)request frame:(WebFrame *)frame decisionListener:(id<WebPolicyDecisionListener>)listener {
 406 #if LogBrowser
 407     NSLog(@"decidePolicyForNavigationAction:%@ request:%@ frame:%@", action, request, frame);
 408 #endif
 409
 410     if ([frame parentFrame] == nil) {
 411         if (!error_) {
 412             NSURL *url(request == nil ? nil : [request URL]);
 413
 414             if (request_ == nil || [self allowsNavigationAction] || [[request_ URL] isEqual:url])
 415                 request_ = request;
 416             else {
 417                 if (url != nil)
 418                     [self pushRequest:request asPop:NO];
 419                 [listener ignore];
 420             }
 421         }
 422     }
 423 }
 424
 425 - (void) webView:(WebView *)view decidePolicyForNewWindowAction:(NSDictionary *)action request:(NSURLRequest *)request newFrameName:(NSString *)frame decisionListener:(id<WebPolicyDecisionListener>)listener {
 426 #if LogBrowser
 427     NSLog(@"decidePolicyForNewWindowAction:%@ request:%@ newFrameName:%@", action, request, frame);
 428 #endif
 429
 430     NSURL *url([request URL]);
 431     if (url == nil)
 432         return;
 433
 434     if ([frame isEqualToString:@"_open"])
 435         [delegate_ openURL:url];
 436     else {
 437         NSString *scheme([[url scheme] lowercaseString]);
 438         if ([scheme isEqualToString:@"mailto"])
 439             [self _openMailToURL:url];
 440         else
 441             [self pushRequest:request asPop:[frame isEqualToString:@"_popup"]];
 442     }
 443
 444     [listener ignore];
 445 }
 446
 447 - (void) webView:(WebView *)view didClearWindowObject:(WebScriptObject *)window forFrame:(WebFrame *)frame {
 448 }
 449
 450 - (void) webView:(WebView *)view didFailLoadWithError:(NSError *)error forFrame:(WebFrame *)frame {
 451 #if LogBrowser
 452     NSLog(@"didFailLoadWithError:%@ forFrame:%@", error, frame);
 453 #endif
 454
 455     [self _didFailWithError:error forFrame:frame];
 456 }
 457
 458 - (void) webView:(WebView *)view didFailProvisionalLoadWithError:(NSError *)error forFrame:(WebFrame *)frame {
 459 #if LogBrowser
 460     NSLog(@"didFailProvisionalLoadWithError:%@ forFrame:%@", error, frame);
 461 #endif
 462
 463     [self _didFailWithError:error forFrame:frame];
 464 }
 465
 466 - (void) webView:(WebView *)view didFinishLoadForFrame:(WebFrame *)frame {
 467     [loading_ removeObject:[NSValue valueWithNonretainedObject:frame]];
 468
 469     if ([frame parentFrame] == nil) {
 470         if (DOMDocument *document = [frame DOMDocument])
 471             if (DOMNodeList<NSFastEnumeration> *bodies = [document getElementsByTagName:@"body"])
 472                 for (DOMHTMLBodyElement *body in (id) bodies) {
 473                     DOMCSSStyleDeclaration *style([document getComputedStyle:body pseudoElement:nil]);
 474
 475                     UIColor *uic(nil);
 476
 477                     if (DOMCSSPrimitiveValue *color = static_cast<DOMCSSPrimitiveValue *>([style getPropertyCSSValue:@"background-color"])) {
 478                         if ([color primitiveType] == DOM_CSS_RGBCOLOR) {
 479                             DOMRGBColor *rgb([color getRGBColorValue]);
 480
 481                             float red([[rgb red] getFloatValue:DOM_CSS_NUMBER]);
 482                             float green([[rgb green] getFloatValue:DOM_CSS_NUMBER]);
 483                             float blue([[rgb blue] getFloatValue:DOM_CSS_NUMBER]);
 484                             float alpha([[rgb alpha] getFloatValue:DOM_CSS_NUMBER]);
 485
 486                             if (red == 0xc7 && green == 0xce && blue == 0xd5)
 487                                 uic = [UIColor pinStripeColor];
 488                             else if (alpha != 0)
 489                                 uic = [UIColor
 490                                     colorWithRed:(red / 255)
 491                                     green:(green / 255)
 492                                     blue:(blue / 255)
 493                                     alpha:alpha
 494                                 ];
 495                         }
 496                     }
 497
 498                     [scroller_ setBackgroundColor:(uic ?: [UIColor clearColor])];
 499                     break;
 500                 }
 501     }
 502
 503     [self _didFinishLoading];
 504 }
 505
 506 - (void) webView:(WebView *)view didReceiveTitle:(NSString *)title forFrame:(WebFrame *)frame {
 507     if ([frame parentFrame] != nil)
 508         return;
 509
 510     if (title_ != nil)
 511         [title_ autorelease];
 512     title_ = [title retain];
 513
 514     [[self navigationItem] setTitle:title_];
 515 }
 516
 517 - (void) webView:(WebView *)view didStartProvisionalLoadForFrame:(WebFrame *)frame {
 518     [loading_ addObject:[NSValue valueWithNonretainedObject:frame]];
 519
 520     if ([frame parentFrame] == nil) {
 521         CYRelease(title_);
 522         custom_ = nil;
 523         style_ = nil;
 524         function_ = nil;
 525
 526         [self setHidesNavigationBar:NO];
 527
 528         // XXX: do we still need to do this?
 529         [[self navigationItem] setTitle:nil];
 530     }
 531
 532     [self _didStartLoading];
 533 }
 534
 535 - (NSURLRequest *) webView:(WebView *)view resource:(id)identifier willSendRequest:(NSURLRequest *)request redirectResponse:(NSURLResponse *)response fromDataSource:(WebDataSource *)source {
 536 #if LogBrowser
 537     NSLog(@"resource:%@ willSendRequest:%@ redirectResponse:%@ fromDataSource:%@", identifier, request, response, source);
 538 #endif
 539
 540     return request;
 541 }
 542
 543 - (bool) webView:(WebView *)view shouldRunJavaScriptAlertPanelWithMessage:(NSString *)message initiatedByFrame:(WebFrame *)frame {
 544     return [self _allowJavaScriptPanel];
 545 }
 546
 547 - (bool) webView:(WebView *)view shouldRunJavaScriptConfirmPanelWithMessage:(NSString *)message initiatedByFrame:(WebFrame *)frame {
 548     return [self _allowJavaScriptPanel];
 549 }
 550
 551 - (bool) webView:(WebView *)view shouldRunJavaScriptTextInputPanelWithPrompt:(NSString *)prompt defaultText:(NSString *)text initiatedByFrame:(WebFrame *)frame {
 552     return [self _allowJavaScriptPanel];
 553 }
 554
 555 - (void) webViewClose:(WebView *)view {
 556     [self close];
 557 }
 558 // }}}
 559
 560 - (void) close {
 561     [[self navigationController] dismissModalViewControllerAnimated:YES];
 562 }
 563
 564 - (void) alertView:(UIAlertView *)alert clickedButtonAtIndex:(NSInteger)button {
 565     NSString *context([alert context]);
 566
 567     if ([context isEqualToString:@"sensitive"]) {
 568         switch (button) {
 569             case 1:
 570                 sensitive_ = [NSNumber numberWithBool:YES];
 571             break;
 572
 573             case 2:
 574                 sensitive_ = [NSNumber numberWithBool:NO];
 575             break;
 576         }
 577
 578         [alert dismissWithClickedButtonIndex:-1 animated:YES];
 579     } else if ([context isEqualToString:@"challenge"]) {
 580         id<NSURLAuthenticationChallengeSender> sender([challenge_ sender]);
 581
 582         switch (button) {
 583             case 1: {
 584                 NSString *username([[alert textFieldAtIndex:0] text]);
 585                 NSString *password([[alert textFieldAtIndex:1] text]);
 586
 587                 NSURLCredential *credential([NSURLCredential credentialWithUser:username password:password persistence:NSURLCredentialPersistenceForSession]);
 588
 589                 [sender useCredential:credential forAuthenticationChallenge:challenge_];
 590             } break;
 591
 592             case 2:
 593                 [sender cancelAuthenticationChallenge:challenge_];
 594             break;
 595
 596             _nodefault
 597         }
 598
 599         [challenge_ release];
 600         challenge_ = nil;
 601
 602         [alert dismissWithClickedButtonIndex:-1 animated:YES];
 603     } else if ([context isEqualToString:@"submit"]) {
 604         if (button == [alert cancelButtonIndex]) {
 605         } else if (button == [alert firstOtherButtonIndex]) {
 606             if (request_ != nil) {
 607                 WebThreadLocked lock;
 608                 [webview_ loadRequest:request_];
 609             }
 610         }
 611
 612         [alert dismissWithClickedButtonIndex:-1 animated:YES];
 613     }
 614 }
 615
 616 - (UIBarButtonItemStyle) rightButtonStyle {
 617     if (style_ == nil) normal:
 618         return UIBarButtonItemStylePlain;
 619     else if ([style_ isEqualToString:@"Normal"])
 620         return UIBarButtonItemStylePlain;
 621     else if ([style_ isEqualToString:@"Highlighted"])
 622         return UIBarButtonItemStyleDone;
 623     else goto normal;
 624 }
 625
 626 - (UIBarButtonItem *) customButton {
 627     if (custom_ == nil)
 628         return nil;
 629     else if (custom_ == [NSNull null])
 630         return (UIBarButtonItem *) [NSNull null];
 631
 632     return [[[UIBarButtonItem alloc]
 633         initWithTitle:static_cast<NSString *>(custom_.operator NSObject *())
 634         style:[self rightButtonStyle]
 635         target:self
 636         action:@selector(customButtonClicked)
 637     ] autorelease];
 638 }
 639
 640 - (UIBarButtonItem *) leftButton {
 641     UINavigationItem *item([self navigationItem]);
 642     if ([item backBarButtonItem] != nil && ![item hidesBackButton])
 643         return nil;
 644
 645     if (UINavigationController *navigation = [self navigationController])
 646         if ([[navigation parentViewController] modalViewController] == navigation)
 647             return [[[UIBarButtonItem alloc]
 648                 initWithTitle:UCLocalize("CLOSE")
 649                 style:UIBarButtonItemStylePlain
 650                 target:self
 651                 action:@selector(close)
 652             ] autorelease];
 653
 654     return nil;
 655 }
 656
 657 - (void) applyLeftButton {
 658     [[self navigationItem] setLeftBarButtonItem:[self leftButton]];
 659 }
 660
 661 - (UIBarButtonItem *) rightButton {
 662     return reloaditem_;
 663 }
 664
 665 - (void) applyLoadingTitle {
 666     [[self navigationItem] setTitle:UCLocalize("LOADING")];
 667 }
 668
 669 - (void) layoutRightButton {
 670     [[loadingitem_ view] addSubview:indicator_];
 671     [[loadingitem_ view] bringSubviewToFront:indicator_];
 672 }
 673
 674 - (void) applyRightButton {
 675     if ([self isLoading]) {
 676         [[self navigationItem] setRightBarButtonItem:loadingitem_ animated:YES];
 677         [self performSelector:@selector(layoutRightButton) withObject:nil afterDelay:0];
 678
 679         [indicator_ startAnimating];
 680         [self applyLoadingTitle];
 681     } else {
 682         [indicator_ stopAnimating];
 683
 684         UIBarButtonItem *button([self customButton]);
 685         if (button == nil)
 686             button = [self rightButton];
 687         else if (button == (UIBarButtonItem *) [NSNull null])
 688             button = nil;
 689
 690         [[self navigationItem] setRightBarButtonItem:button];
 691     }
 692 }
 693
 694 - (void) didStartLoading {
 695     // Overridden in subclasses.
 696 }
 697
 698 - (void) _didStartLoading {
 699     [self applyRightButton];
 700
 701     if ([loading_ count] != 1)
 702         return;
 703
 704     [delegate_ retainNetworkActivityIndicator];
 705     [self didStartLoading];
 706 }
 707
 708 - (void) didFinishLoading {
 709     // Overridden in subclasses.
 710 }
 711
 712 - (void) _didFinishLoading {
 713     if ([loading_ count] != 0)
 714         return;
 715
 716     [self applyRightButton];
 717     [[self navigationItem] setTitle:title_];
 718
 719     [delegate_ releaseNetworkActivityIndicator];
 720     [self didFinishLoading];
 721 }
 722
 723 - (bool) isLoading {
 724     return [loading_ count] != 0;
 725 }
 726
 727 - (id) initWithWidth:(float)width ofClass:(Class)_class {
 728     if ((self = [super init]) != nil) {
 729         allowsNavigationAction_ = true;
 730
 731         class_ = _class;
 732         loading_ = [[NSMutableSet alloc] initWithCapacity:5];
 733
 734         indirect_ = [[IndirectDelegate alloc] initWithDelegate:self];
 735
 736         CGRect bounds([[self view] bounds]);
 737
 738         webview_ = [[[CyteWebView alloc] initWithFrame:bounds] autorelease];
 739         [webview_ setDelegate:self];
 740         [self setView:webview_];
 741
 742         if ([webview_ respondsToSelector:@selector(setDataDetectorTypes:)])
 743             [webview_ setDataDetectorTypes:UIDataDetectorTypeAutomatic];
 744         else
 745             [webview_ setDetectsPhoneNumbers:NO];
 746
 747         [webview_ setScalesPageToFit:YES];
 748
 749         UIWebDocumentView *document([webview_ _documentView]);
 750
 751         // XXX: I think this improves scrolling; the hardcoded-ness sucks
 752         [document setTileSize:CGSizeMake(320, 500)];
 753
 754         [document setBackgroundColor:[UIColor clearColor]];
 755
 756         // XXX: this is terribly (too?) expensive
 757         [document setDrawsBackground:NO];
 758
 759         WebView *webview([document webView]);
 760         WebPreferences *preferences([webview preferences]);
 761
 762         // XXX: I have no clue if I actually /want/ this modification
 763         if ([webview respondsToSelector:@selector(_setLayoutInterval:)])
 764             [webview _setLayoutInterval:0];
 765         else if ([preferences respondsToSelector:@selector(_setLayoutInterval:)])
 766             [preferences _setLayoutInterval:0];
 767
 768         [preferences setCacheModel:WebCacheModelDocumentBrowser];
 769         [preferences setOfflineWebApplicationCacheEnabled:YES];
 770
 771 #if LogMessages
 772         if ([document respondsToSelector:@selector(setAllowsMessaging:)])
 773             [document setAllowsMessaging:YES];
 774         if ([webview respondsToSelector:@selector(_setAllowsMessaging:)])
 775             [webview _setAllowsMessaging:YES];
 776 #endif
 777
 778         if ([webview_ respondsToSelector:@selector(_scrollView)]) {
 779             scroller_ = [webview_ _scrollView];
 780
 781             [scroller_ setDirectionalLockEnabled:YES];
 782             [scroller_ setDecelerationRate:CYScrollViewDecelerationRateNormal];
 783             [scroller_ setDelaysContentTouches:NO];
 784
 785             [scroller_ setCanCancelContentTouches:YES];
 786         } else if ([webview_ respondsToSelector:@selector(_scroller)]) {
 787             UIScroller *scroller([webview_ _scroller]);
 788             scroller_ = (UIScrollView *) scroller;
 789
 790             [scroller setDirectionalScrolling:YES];
 791             // XXX: we might be better off /not/ setting this on older systems
 792             [scroller setScrollDecelerationFactor:CYScrollViewDecelerationRateNormal]; /* 0.989324 */
 793             [scroller setScrollHysteresis:0]; /* 8 */
 794
 795             [scroller setThumbDetectionEnabled:NO];
 796
 797             // use NO with UIApplicationUseLegacyEvents(YES)
 798             [scroller setEventMode:YES];
 799
 800             // XXX: this is handled by setBounces, right?
 801             //[scroller setAllowsRubberBanding:YES];
 802         }
 803
 804         [scroller_ setFixedBackgroundPattern:YES];
 805         [scroller_ setBackgroundColor:[UIColor clearColor]];
 806         [scroller_ setClipsSubviews:YES];
 807
 808         [scroller_ setBounces:YES];
 809         [scroller_ setScrollingEnabled:YES];
 810         [scroller_ setShowBackgroundShadow:NO];
 811
 812         [self setViewportWidth:width];
 813
 814         reloaditem_ = [[UIBarButtonItem alloc]
 815             initWithTitle:UCLocalize("RELOAD")
 816             style:[self rightButtonStyle]
 817             target:self
 818             action:@selector(reloadButtonClicked)
 819         ];
 820
 821         loadingitem_ = [[UIBarButtonItem alloc]
 822             initWithTitle:@" "
 823             style:UIBarButtonItemStylePlain
 824             target:self
 825             action:@selector(reloadButtonClicked)
 826         ];
 827
 828         indicator_ = [[UIActivityIndicatorView alloc] initWithActivityIndicatorStyle:UIActivityIndicatorViewStyleWhite];
 829         [indicator_ setFrame:CGRectMake(15, 5, [indicator_ frame].size.width, [indicator_ frame].size.height)];
 830
 831         UITableView *table([[[UITableView alloc] initWithFrame:bounds style:UITableViewStyleGrouped] autorelease]);
 832         [webview_ insertSubview:table atIndex:0];
 833
 834         [self applyLeftButton];
 835         [self applyRightButton];
 836
 837         [table setAutoresizingMask:(UIViewAutoresizingFlexibleWidth | UIViewAutoresizingFlexibleHeight)];
 838         [webview_ setAutoresizingMask:(UIViewAutoresizingFlexibleWidth | UIViewAutoresizingFlexibleHeight)];
 839         [indicator_ setAutoresizingMask:UIViewAutoresizingFlexibleLeftMargin];
 840     } return self;
 841 }
 842
 843 - (id) initWithWidth:(float)width {
 844     return [self initWithWidth:width ofClass:[self class]];
 845 }
 846
 847 - (id) init {
 848     return [self initWithWidth:0];
 849 }
 850
 851 - (id) initWithURL:(NSURL *)url {
 852     if ((self = [self init]) != nil) {
 853         [self setURL:url];
 854     } return self;
 855 }
 856
 857 - (void) callFunction:(WebScriptObject *)function {
 858     WebThreadLocked lock;
 859
 860     WebView *webview([[webview_ _documentView] webView]);
 861     WebFrame *frame([webview mainFrame]);
 862     WebPreferences *preferences([webview preferences]);
 863
 864     bool maybe([preferences javaScriptCanOpenWindowsAutomatically]);
 865     [preferences setJavaScriptCanOpenWindowsAutomatically:NO];
 866
 867     /*id _private(MSHookIvar<id>(webview, "_private"));
 868     WebCore::Page *page(_private == nil ? NULL : MSHookIvar<WebCore::Page *>(_private, "page"));
 869     WebCore::Settings *settings(page == NULL ? NULL : page->settings());
 870
 871     bool no;
 872     if (settings == NULL)
 873         no = 0;
 874     else {
 875         no = settings->JavaScriptCanOpenWindowsAutomatically();
 876         settings->setJavaScriptCanOpenWindowsAutomatically(true);
 877     }*/
 878
 879     if (UIWindow *window = [[self view] window])
 880         if (UIResponder *responder = [window firstResponder])
 881             [responder resignFirstResponder];
 882
 883     JSObjectRef object([function JSObject]);
 884     JSGlobalContextRef context([frame globalContext]);
 885     JSObjectCallAsFunction(context, object, NULL, 0, NULL, NULL);
 886
 887     /*if (settings != NULL)
 888         settings->setJavaScriptCanOpenWindowsAutomatically(no);*/
 889
 890     [preferences setJavaScriptCanOpenWindowsAutomatically:maybe];
 891 }
 892
 893 - (void) reloadButtonClicked {
 894     [self reloadURLWithCache:YES];
 895 }
 896
 897 - (void) _customButtonClicked {
 898     [self reloadButtonClicked];
 899 }
 900
 901 - (void) customButtonClicked {
 902 #if !AlwaysReload
 903     if (function_ != nil)
 904         [self callFunction:function_];
 905     else
 906 #endif
 907     [self _customButtonClicked];
 908 }
 909
 910 + (float) defaultWidth {
 911     return 980;
 912 }
 913
 914 - (void) setNavigationBarStyle:(NSString *)name {
 915     UIBarStyle style;
 916     if ([name isEqualToString:@"Black"])
 917         style = UIBarStyleBlack;
 918     else
 919         style = UIBarStyleDefault;
 920
 921     [[[self navigationController] navigationBar] setBarStyle:style];
 922 }
 923
 924 - (void) setNavigationBarTintColor:(UIColor *)color {
 925     [[[self navigationController] navigationBar] setTintColor:color];
 926 }
 927
 928 - (void) setBadgeValue:(id)value {
 929     [[[self navigationController] tabBarItem] setBadgeValue:value];
 930 }
 931
 932 - (void) setHidesBackButton:(bool)value {
 933     [[self navigationItem] setHidesBackButton:value];
 934     [self applyLeftButton];
 935 }
 936
 937 - (void) setHidesBackButtonByNumber:(NSNumber *)value {
 938     [self setHidesBackButton:[value boolValue]];
 939 }
 940
 941 - (void) dispatchEvent:(NSString *)event {
 942     [webview_ dispatchEvent:event];
 943 }
 944
 945 - (bool) hidesNavigationBar {
 946     return hidesNavigationBar_;
 947 }
 948
 949 - (void) _setHidesNavigationBar:(bool)value animated:(bool)animated {
 950     if (visible_)
 951         [[self navigationController] setNavigationBarHidden:(value && [self hidesNavigationBar]) animated:animated];
 952 }
 953
 954 - (void) setHidesNavigationBar:(bool)value {
 955     if (hidesNavigationBar_ != value) {
 956         hidesNavigationBar_ = value;
 957         [self _setHidesNavigationBar:YES animated:YES];
 958     }
 959 }
 960
 961 - (void) setHidesNavigationBarByNumber:(NSNumber *)value {
 962     [self setHidesNavigationBar:[value boolValue]];
 963 }
 964
 965 - (void) viewWillAppear:(BOOL)animated {
 966     visible_ = true;
 967
 968     if ([self hidesNavigationBar])
 969         [self _setHidesNavigationBar:YES animated:animated];
 970
 971     [self dispatchEvent:@"CydiaViewWillAppear"];
 972     [super viewWillAppear:animated];
 973 }
 974
 975 - (void) viewDidAppear:(BOOL)animated {
 976     [super viewDidAppear:animated];
 977     [self dispatchEvent:@"CydiaViewDidAppear"];
 978 }
 979
 980 - (void) viewWillDisappear:(BOOL)animated {
 981     [self dispatchEvent:@"CydiaViewWillDisappear"];
 982     [super viewWillDisappear:animated];
 983
 984     if ([self hidesNavigationBar])
 985         [self _setHidesNavigationBar:NO animated:animated];
 986
 987     visible_ = false;
 988 }
 989
 990 - (void) viewDidDisappear:(BOOL)animated {
 991     [super viewDidDisappear:animated];
 992     [self dispatchEvent:@"CydiaViewDidDisappear"];
 993 }
 994
 995 @end