CyteKit/WebViewController.mm

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