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/IndirectDelegate.h"
   9 #include "CyteKit/Localize.h"
  10 #include "CyteKit/WebViewController.h"
  11 #include "CyteKit/PerlCompatibleRegEx.hpp"
  12 #include "CyteKit/WebThreadLocked.hpp"
  13
  14 //#include <QuartzCore/CALayer.h>
  15 // XXX: fix the minimum requirement
  16 extern NSString * const kCAFilterNearest;
  17
  18 #include <WebCore/WebCoreThread.h>
  19
  20 #import <WebKit/WebKitErrors.h>
  21 #import <WebKit/WebPreferences.h>
  22
  23 #include <WebKit/DOMCSSPrimitiveValue.h>
  24 #include <WebKit/DOMCSSStyleDeclaration.h>
  25 #include <WebKit/DOMDocument.h>
  26 #include <WebKit/DOMHTMLBodyElement.h>
  27 #include <WebKit/DOMRGBColor.h>
  28
  29 #include <dlfcn.h>
  30 #include <objc/runtime.h>
  31
  32 #define ForSaurik 0
  33 #define DefaultTimeout_ 120.0
  34
  35 #define ShowInternals 0
  36 #define LogBrowser 0
  37 #define LogMessages 0
  38
  39 #define lprintf(args...) fprintf(stderr, args)
  40
  41 // XXX: centralize these special class things to some file or mechanism?
  42 static Class $MFMailComposeViewController;
  43
  44 float CYScrollViewDecelerationRateNormal;
  45
  46 @interface WebView (Apple)
  47 - (void) _setLayoutInterval:(float)interval;
  48 - (void) _setAllowsMessaging:(BOOL)allows;
  49 @end
  50
  51 @implementation WebFrame (Cydia)
  52
  53 - (NSString *) description {
  54     return [NSString stringWithFormat:@"<%s: %p, %@>", class_getName([self class]), self, [[[([self provisionalDataSource] ?: [self dataSource]) request] URL] absoluteString]];
  55 }
  56
  57 @end
  58
  59 /* Indirect Delegate {{{ */
  60 @implementation IndirectDelegate
  61
  62 - (void) setDelegate:(id)delegate {
  63     delegate_ = delegate;
  64 }
  65
  66 - (id) initWithDelegate:(id)delegate {
  67     delegate_ = delegate;
  68     return self;
  69 }
  70
  71 - (IMP) methodForSelector:(SEL)sel {
  72     if (IMP method = [super methodForSelector:sel])
  73         return method;
  74     fprintf(stderr, "methodForSelector:[%s] == NULL\n", sel_getName(sel));
  75     return NULL;
  76 }
  77
  78 - (BOOL) respondsToSelector:(SEL)sel {
  79     if ([super respondsToSelector:sel])
  80         return YES;
  81
  82     // XXX: WebThreadCreateNSInvocation returns nil
  83
  84 #if ShowInternals
  85     fprintf(stderr, "[%s]R?%s\n", class_getName(self->isa), sel_getName(sel));
  86 #endif
  87
  88     return delegate_ == nil ? NO : [delegate_ respondsToSelector:sel];
  89 }
  90
  91 - (NSMethodSignature *) methodSignatureForSelector:(SEL)sel {
  92     if (NSMethodSignature *method = [super methodSignatureForSelector:sel])
  93         return method;
  94
  95 #if ShowInternals
  96     fprintf(stderr, "[%s]S?%s\n", class_getName(self->isa), sel_getName(sel));
  97 #endif
  98
  99     if (delegate_ != nil)
 100         if (NSMethodSignature *sig = [delegate_ methodSignatureForSelector:sel])
 101             return sig;
 102
 103     // XXX: I fucking hate Apple so very very bad
 104     return [NSMethodSignature signatureWithObjCTypes:"v@:"];
 105 }
 106
 107 - (void) forwardInvocation:(NSInvocation *)inv {
 108     SEL sel = [inv selector];
 109     if (delegate_ != nil && [delegate_ respondsToSelector:sel])
 110         [inv invokeWithTarget:delegate_];
 111 }
 112
 113 @end
 114 /* }}} */
 115
 116 @implementation CyteWebViewController
 117
 118 #if ShowInternals
 119 #include "CyteKit/UCInternal.h"
 120 #endif
 121
 122 + (void) _initialize {
 123     [WebPreferences _setInitialDefaultTextEncodingToSystemEncoding];
 124
 125     dlopen("/System/Library/Frameworks/MessageUI.framework/MessageUI", RTLD_GLOBAL | RTLD_LAZY);
 126     $MFMailComposeViewController = objc_getClass("MFMailComposeViewController");
 127
 128     if (float *_UIScrollViewDecelerationRateNormal = reinterpret_cast<float *>(dlsym(RTLD_DEFAULT, "UIScrollViewDecelerationRateNormal")))
 129         CYScrollViewDecelerationRateNormal = *_UIScrollViewDecelerationRateNormal;
 130     else // XXX: this actually might be fast on some older systems: we should look into this
 131         CYScrollViewDecelerationRateNormal = 0.998;
 132 }
 133
 134 - (bool) retainsNetworkActivityIndicator {
 135     return true;
 136 }
 137
 138 - (void) releaseNetworkActivityIndicator {
 139     if ([loading_ count] != 0) {
 140         [loading_ removeAllObjects];
 141
 142         if ([self retainsNetworkActivityIndicator])
 143             [delegate_ releaseNetworkActivityIndicator];
 144     }
 145 }
 146
 147 - (void) dealloc {
 148 #if LogBrowser
 149     NSLog(@"[CyteWebViewController dealloc]");
 150 #endif
 151
 152     [self releaseNetworkActivityIndicator];
 153
 154     [super dealloc];
 155 }
 156
 157 - (NSString *) description {
 158     return [NSString stringWithFormat:@"<%s: %p, %@>", class_getName([self class]), self, [[request_ URL] absoluteString]];
 159 }
 160
 161 - (CyteWebView *) webView {
 162     return (CyteWebView *) [self view];
 163 }
 164
 165 - (NSURL *) URLWithURL:(NSURL *)url {
 166     return url;
 167 }
 168
 169 - (NSURLRequest *) requestWithURL:(NSURL *)url cachePolicy:(NSURLRequestCachePolicy)policy referrer:(NSString *)referrer {
 170     NSMutableURLRequest *request([NSMutableURLRequest
 171         requestWithURL:[self URLWithURL:url]
 172         cachePolicy:policy
 173         timeoutInterval:DefaultTimeout_
 174     ]);
 175
 176     [request setValue:referrer forHTTPHeaderField:@"Referer"];
 177
 178     return request;
 179 }
 180
 181 - (void) setRequest:(NSURLRequest *)request {
 182     _assert(request_ == nil);
 183     request_ = request;
 184 }
 185
 186 - (void) setURL:(NSURL *)url {
 187     [self setURL:url withReferrer:nil];
 188 }
 189
 190 - (void) setURL:(NSURL *)url withReferrer:(NSString *)referrer {
 191     [self setRequest:[self requestWithURL:url cachePolicy:NSURLRequestUseProtocolCachePolicy referrer:referrer]];
 192 }
 193
 194 - (void) loadURL:(NSURL *)url cachePolicy:(NSURLRequestCachePolicy)policy {
 195     [self loadRequest:[self requestWithURL:url cachePolicy:policy referrer:nil]];
 196 }
 197
 198 - (void) loadURL:(NSURL *)url {
 199     [self loadURL:url cachePolicy:NSURLRequestUseProtocolCachePolicy];
 200 }
 201
 202 - (void) loadRequest:(NSURLRequest *)request {
 203 #if LogBrowser
 204     NSLog(@"loadRequest:%@", request);
 205 #endif
 206
 207     error_ = false;
 208     ready_ = true;
 209
 210     WebThreadLocked lock;
 211     [[self webView] loadRequest:request];
 212 }
 213
 214 - (void) reloadURLWithCache:(BOOL)cache {
 215     if (request_ == nil)
 216         return;
 217
 218     NSMutableURLRequest *request([request_ mutableCopy]);
 219     [request setCachePolicy:(cache ? NSURLRequestUseProtocolCachePolicy : NSURLRequestReloadIgnoringLocalCacheData)];
 220
 221     request_ = request;
 222
 223     if (cache || [request_ HTTPBody] == nil && [request_ HTTPBodyStream] == nil)
 224         [self loadRequest:request_];
 225     else {
 226         UIAlertView *alert = [[[UIAlertView alloc]
 227             initWithTitle:UCLocalize("RESUBMIT_FORM")
 228             message:nil
 229             delegate:self
 230             cancelButtonTitle:UCLocalize("CANCEL")
 231             otherButtonTitles:
 232                 UCLocalize("SUBMIT"),
 233             nil
 234         ] autorelease];
 235
 236         [alert setContext:@"submit"];
 237         [alert show];
 238     }
 239 }
 240
 241 - (void) reloadData {
 242     [super reloadData];
 243
 244     if (ready_)
 245         [self dispatchEvent:@"CydiaReloadData"];
 246     else
 247         [self reloadURLWithCache:YES];
 248 }
 249
 250 - (void) setButtonImage:(NSString *)button withStyle:(NSString *)style toFunction:(id)function {
 251     custom_ = button;
 252     style_ = style;
 253     function_ = function;
 254
 255     [self performSelectorOnMainThread:@selector(applyRightButton) withObject:nil waitUntilDone:NO];
 256 }
 257
 258 - (void) setButtonTitle:(NSString *)button withStyle:(NSString *)style toFunction:(id)function {
 259     custom_ = button;
 260     style_ = style;
 261     function_ = function;
 262
 263     [self performSelectorOnMainThread:@selector(applyRightButton) withObject:nil waitUntilDone:NO];
 264 }
 265
 266 - (void) removeButton {
 267     custom_ = [NSNull null];
 268     [self performSelectorOnMainThread:@selector(applyRightButton) withObject:nil waitUntilDone:NO];
 269 }
 270
 271 - (void) scrollToBottomAnimated:(NSNumber *)animated {
 272     CGSize size([scroller_ contentSize]);
 273     CGPoint offset([scroller_ contentOffset]);
 274     CGRect frame([scroller_ frame]);
 275
 276     if (size.height - offset.y < frame.size.height + 20.f) {
 277         CGRect rect = {{0, size.height-1}, {size.width, 1}};
 278         [scroller_ scrollRectToVisible:rect animated:[animated boolValue]];
 279     }
 280 }
 281
 282 - (void) _setViewportWidth {
 283     [[[self webView] _documentView] setViewportSize:CGSizeMake(width_, UIWebViewGrowsAndShrinksToFitHeight) forDocumentTypes:0x10];
 284 }
 285
 286 - (void) setViewportWidth:(float)width {
 287     width_ = width != 0 ? width : [[self class] defaultWidth];
 288     [self _setViewportWidth];
 289 }
 290
 291 - (void) _setViewportWidthOnMainThread:(NSNumber *)width {
 292     [self setViewportWidth:[width floatValue]];
 293 }
 294
 295 - (void) setViewportWidthOnMainThread:(float)width {
 296     [self performSelectorOnMainThread:@selector(_setViewportWidthOnMainThread:) withObject:[NSNumber numberWithFloat:width] waitUntilDone:NO];
 297 }
 298
 299 - (void) webViewUpdateViewSettings:(UIWebView *)view {
 300     [self _setViewportWidth];
 301 }
 302
 303 - (void) mailComposeController:(MFMailComposeViewController*)controller didFinishWithResult:(MFMailComposeResult)result error:(NSError*)error {
 304     [self dismissModalViewControllerAnimated:YES];
 305 }
 306
 307 - (void) _setupMail:(MFMailComposeViewController *)controller {
 308 }
 309
 310 - (void) _openMailToURL:(NSURL *)url {
 311     if ($MFMailComposeViewController != nil && [$MFMailComposeViewController canSendMail]) {
 312         MFMailComposeViewController *controller([[[$MFMailComposeViewController alloc] init] autorelease]);
 313         [controller setMailComposeDelegate:self];
 314
 315         [controller setMailToURL:url];
 316
 317         [self _setupMail:controller];
 318
 319         [self presentModalViewController:controller animated:YES];
 320         return;
 321     }
 322
 323     UIApplication *app([UIApplication sharedApplication]);
 324     if ([app respondsToSelector:@selector(openURL:asPanel:)])
 325         [app openURL:url asPanel:YES];
 326     else
 327         [app openURL:url];
 328 }
 329
 330 - (bool) _allowJavaScriptPanel {
 331     return true;
 332 }
 333
 334 - (bool) allowsNavigationAction {
 335     return allowsNavigationAction_;
 336 }
 337
 338 - (void) setAllowsNavigationAction:(bool)value {
 339     allowsNavigationAction_ = value;
 340 }
 341
 342 - (void) setAllowsNavigationActionByNumber:(NSNumber *)value {
 343     [self setAllowsNavigationAction:[value boolValue]];
 344 }
 345
 346 - (void) popViewControllerWithNumber:(NSNumber *)value {
 347     UINavigationController *navigation([self navigationController]);
 348     if ([navigation topViewController] == self)
 349         [navigation popViewControllerAnimated:[value boolValue]];
 350 }
 351
 352 - (void) _didFailWithError:(NSError *)error forFrame:(WebFrame *)frame {
 353     NSValue *object([NSValue valueWithNonretainedObject:frame]);
 354     if (![loading_ containsObject:object])
 355         return;
 356     [loading_ removeObject:object];
 357
 358     [self _didFinishLoading];
 359
 360     if ([[error domain] isEqualToString:NSURLErrorDomain] && [error code] == NSURLErrorCancelled)
 361         return;
 362
 363     if ([[error domain] isEqualToString:WebKitErrorDomain] && [error code] == WebKitErrorFrameLoadInterruptedByPolicyChange) {
 364         request_ = nil;
 365         return;
 366     }
 367
 368     if ([frame parentFrame] == nil) {
 369         [self loadURL:[NSURL URLWithString:[NSString stringWithFormat:@"%@?%@",
 370             [[NSURL fileURLWithPath:[[NSBundle mainBundle] pathForResource:@"error" ofType:@"html"]] absoluteString],
 371             [[error localizedDescription] stringByAddingPercentEscapes]
 372         ]]];
 373
 374         error_ = true;
 375     }
 376 }
 377
 378 - (void) pushRequest:(NSURLRequest *)request forAction:(NSDictionary *)action asPop:(bool)pop {
 379     WebFrame *frame(nil);
 380     if (NSDictionary *WebActionElement = [action objectForKey:@"WebActionElementKey"])
 381         frame = [WebActionElement objectForKey:@"WebElementFrame"];
 382     if (frame == nil)
 383         frame = [[[[self webView] _documentView] webView] mainFrame];
 384
 385     WebDataSource *source([frame provisionalDataSource] ?: [frame dataSource]);
 386     NSString *referrer([request valueForHTTPHeaderField:@"Referer"] ?: [[[source request] URL] absoluteString]);
 387
 388     NSURL *url([request URL]);
 389
 390     // XXX: filter to internal usage?
 391     CyteViewController *page([delegate_ pageForURL:url forExternal:NO withReferrer:referrer]);
 392
 393     if (page == nil) {
 394         CyteWebViewController *browser([[[class_ alloc] init] autorelease]);
 395         [browser setRequest:request];
 396         page = browser;
 397     }
 398
 399     [page setDelegate:delegate_];
 400
 401     if (!pop) {
 402         [[self navigationItem] setTitle:title_];
 403
 404         [[self navigationController] pushViewController:page animated:YES];
 405     } else {
 406         UINavigationController *navigation([[[UINavigationController alloc] initWithRootViewController:page] autorelease]);
 407
 408         [navigation setDelegate:delegate_];
 409
 410         [[page navigationItem] setLeftBarButtonItem:[[[UIBarButtonItem alloc]
 411             initWithTitle:UCLocalize("CLOSE")
 412             style:UIBarButtonItemStylePlain
 413             target:page
 414             action:@selector(close)
 415         ] autorelease]];
 416
 417         [[self navigationController] presentModalViewController:navigation animated:YES];
 418     }
 419 }
 420
 421 // CyteWebViewDelegate {{{
 422 - (void) webView:(WebView *)view addMessageToConsole:(NSDictionary *)message {
 423 #if LogMessages
 424     static Pcre irritating("^(?"
 425         ":" "The page at .* displayed insecure content from .*\\."
 426         "|" "Unsafe JavaScript attempt to access frame with URL .* from frame with URL .*\\. Domains, protocols and ports must match\\."
 427     ")\\n$");
 428
 429     if (NSString *data = [message objectForKey:@"message"])
 430         if (irritating(data))
 431             return;
 432
 433     NSLog(@"addMessageToConsole:%@", message);
 434 #endif
 435 }
 436
 437 - (void) webView:(WebView *)view decidePolicyForNavigationAction:(NSDictionary *)action request:(NSURLRequest *)request frame:(WebFrame *)frame decisionListener:(id<WebPolicyDecisionListener>)listener {
 438 #if LogBrowser
 439     NSLog(@"decidePolicyForNavigationAction:%@ request:%@ %@ frame:%@", action, request, [request allHTTPHeaderFields], frame);
 440 #endif
 441
 442     if ([frame parentFrame] == nil) {
 443         if (!error_) {
 444             NSURL *url(request == nil ? nil : [request URL]);
 445
 446             if (request_ != nil && ![[request_ URL] isEqual:url] && ![self allowsNavigationAction]) {
 447                 if (url != nil)
 448                     [self pushRequest:request forAction:action asPop:NO];
 449                 [listener ignore];
 450             }
 451         }
 452     }
 453 }
 454
 455 - (void) webView:(WebView *)view didDecidePolicy:(CYWebPolicyDecision)decision forNavigationAction:(NSDictionary *)action request:(NSURLRequest *)request frame:(WebFrame *)frame {
 456     if ([frame parentFrame] == nil)
 457         if (decision == CYWebPolicyDecisionUse)
 458             if (!error_)
 459                 request_ = request;
 460 }
 461
 462 - (void) webView:(WebView *)view decidePolicyForNewWindowAction:(NSDictionary *)action request:(NSURLRequest *)request newFrameName:(NSString *)name decisionListener:(id<WebPolicyDecisionListener>)listener {
 463 #if LogBrowser
 464     NSLog(@"decidePolicyForNewWindowAction:%@ request:%@ %@ newFrameName:%@", action, request, [request allHTTPHeaderFields], name);
 465 #endif
 466
 467     NSURL *url([request URL]);
 468     if (url == nil)
 469         return;
 470
 471     if ([name isEqualToString:@"_open"])
 472         [delegate_ openURL:url];
 473     else {
 474         NSString *scheme([[url scheme] lowercaseString]);
 475         if ([scheme isEqualToString:@"mailto"])
 476             [self _openMailToURL:url];
 477         else
 478             [self pushRequest:request forAction:action asPop:[name isEqualToString:@"_popup"]];
 479     }
 480
 481     [listener ignore];
 482 }
 483
 484 - (void) webView:(WebView *)view didClearWindowObject:(WebScriptObject *)window forFrame:(WebFrame *)frame {
 485 }
 486
 487 - (void) webView:(WebView *)view didCommitLoadForFrame:(WebFrame *)frame {
 488 #if LogBrowser
 489     NSLog(@"didCommitLoadForFrame:%@", frame);
 490 #endif
 491
 492     if ([frame parentFrame] == nil) {
 493         loaded_ = true;
 494     }
 495 }
 496
 497 - (void) webView:(WebView *)view didFailLoadWithError:(NSError *)error forFrame:(WebFrame *)frame {
 498 #if LogBrowser
 499     NSLog(@"didFailLoadWithError:%@ forFrame:%@", error, frame);
 500 #endif
 501
 502     [self _didFailWithError:error forFrame:frame];
 503 }
 504
 505 - (void) webView:(WebView *)view didFailProvisionalLoadWithError:(NSError *)error forFrame:(WebFrame *)frame {
 506 #if LogBrowser
 507     NSLog(@"didFailProvisionalLoadWithError:%@ forFrame:%@", error, frame);
 508 #endif
 509
 510     [self _didFailWithError:error forFrame:frame];
 511 }
 512
 513 - (void) webView:(WebView *)view didFinishLoadForFrame:(WebFrame *)frame {
 514     NSValue *object([NSValue valueWithNonretainedObject:frame]);
 515     if (![loading_ containsObject:object])
 516         return;
 517     [loading_ removeObject:object];
 518
 519     if ([frame parentFrame] == nil) {
 520         if (DOMDocument *document = [frame DOMDocument])
 521             if (DOMNodeList<NSFastEnumeration> *bodies = [document getElementsByTagName:@"body"])
 522                 for (DOMHTMLBodyElement *body in (id) bodies) {
 523                     DOMCSSStyleDeclaration *style([document getComputedStyle:body pseudoElement:nil]);
 524
 525                     UIColor *uic(nil);
 526
 527                     if (DOMCSSPrimitiveValue *color = static_cast<DOMCSSPrimitiveValue *>([style getPropertyCSSValue:@"background-color"])) {
 528                         if ([color primitiveType] == DOM_CSS_RGBCOLOR) {
 529                             DOMRGBColor *rgb([color getRGBColorValue]);
 530
 531                             float red([[rgb red] getFloatValue:DOM_CSS_NUMBER]);
 532                             float green([[rgb green] getFloatValue:DOM_CSS_NUMBER]);
 533                             float blue([[rgb blue] getFloatValue:DOM_CSS_NUMBER]);
 534                             float alpha([[rgb alpha] getFloatValue:DOM_CSS_NUMBER]);
 535
 536                             if (red == 0xc7 && green == 0xce && blue == 0xd5)
 537                                 uic = [UIColor pinStripeColor];
 538                             else if (alpha != 0)
 539                                 uic = [UIColor
 540                                     colorWithRed:(red / 255)
 541                                     green:(green / 255)
 542                                     blue:(blue / 255)
 543                                     alpha:alpha
 544                                 ];
 545                         }
 546                     }
 547
 548                     [scroller_ setBackgroundColor:(uic ?: [UIColor clearColor])];
 549                     break;
 550                 }
 551     }
 552
 553     [self _didFinishLoading];
 554 }
 555
 556 - (void) webView:(WebView *)view didReceiveTitle:(NSString *)title forFrame:(WebFrame *)frame {
 557     if ([frame parentFrame] != nil)
 558         return;
 559
 560     title_ = title;
 561
 562     [[self navigationItem] setTitle:title_];
 563 }
 564
 565 - (void) webView:(WebView *)view didStartProvisionalLoadForFrame:(WebFrame *)frame {
 566 #if LogBrowser
 567     NSLog(@"didStartProvisionalLoadForFrame:%@", frame);
 568 #endif
 569
 570     [loading_ addObject:[NSValue valueWithNonretainedObject:frame]];
 571
 572     if ([frame parentFrame] == nil) {
 573         title_ = nil;
 574         custom_ = nil;
 575         style_ = nil;
 576         function_ = nil;
 577
 578         allowsNavigationAction_ = true;
 579
 580         [self setHidesNavigationBar:NO];
 581         [self setScrollAlwaysBounceVertical:true];
 582         [self setScrollIndicatorStyle:UIScrollViewIndicatorStyleDefault];
 583
 584         // XXX: do we still need to do this?
 585         [[self navigationItem] setTitle:nil];
 586     }
 587
 588     [self _didStartLoading];
 589 }
 590
 591 - (NSURLRequest *) webView:(WebView *)view resource:(id)identifier willSendRequest:(NSURLRequest *)request redirectResponse:(NSURLResponse *)response fromDataSource:(WebDataSource *)source {
 592 #if LogBrowser
 593     NSLog(@"resource:%@ willSendRequest:%@ redirectResponse:%@ fromDataSource:%@", identifier, request, response, source);
 594 #endif
 595
 596     return request;
 597 }
 598
 599 - (bool) webView:(WebView *)view shouldRunJavaScriptAlertPanelWithMessage:(NSString *)message initiatedByFrame:(WebFrame *)frame {
 600     return [self _allowJavaScriptPanel];
 601 }
 602
 603 - (bool) webView:(WebView *)view shouldRunJavaScriptConfirmPanelWithMessage:(NSString *)message initiatedByFrame:(WebFrame *)frame {
 604     return [self _allowJavaScriptPanel];
 605 }
 606
 607 - (bool) webView:(WebView *)view shouldRunJavaScriptTextInputPanelWithPrompt:(NSString *)prompt defaultText:(NSString *)text initiatedByFrame:(WebFrame *)frame {
 608     return [self _allowJavaScriptPanel];
 609 }
 610
 611 - (void) webViewClose:(WebView *)view {
 612     [self close];
 613 }
 614 // }}}
 615
 616 - (void) close {
 617     [[[self navigationController] parentViewController] dismissModalViewControllerAnimated:YES];
 618 }
 619
 620 - (void) alertView:(UIAlertView *)alert clickedButtonAtIndex:(NSInteger)button {
 621     NSString *context([alert context]);
 622
 623     if ([context isEqualToString:@"sensitive"]) {
 624         switch (button) {
 625             case 1:
 626                 sensitive_ = [NSNumber numberWithBool:YES];
 627             break;
 628
 629             case 2:
 630                 sensitive_ = [NSNumber numberWithBool:NO];
 631             break;
 632         }
 633
 634         [alert dismissWithClickedButtonIndex:-1 animated:YES];
 635     } else if ([context isEqualToString:@"challenge"]) {
 636         id<NSURLAuthenticationChallengeSender> sender([challenge_ sender]);
 637
 638         switch (button) {
 639             case 1: {
 640                 NSString *username([[alert textFieldAtIndex:0] text]);
 641                 NSString *password([[alert textFieldAtIndex:1] text]);
 642
 643                 NSURLCredential *credential([NSURLCredential credentialWithUser:username password:password persistence:NSURLCredentialPersistenceForSession]);
 644
 645                 [sender useCredential:credential forAuthenticationChallenge:challenge_];
 646             } break;
 647
 648             case 2:
 649                 [sender cancelAuthenticationChallenge:challenge_];
 650             break;
 651
 652             _nodefault
 653         }
 654
 655         challenge_ = nil;
 656
 657         [alert dismissWithClickedButtonIndex:-1 animated:YES];
 658     } else if ([context isEqualToString:@"submit"]) {
 659         if (button == [alert cancelButtonIndex]) {
 660         } else if (button == [alert firstOtherButtonIndex]) {
 661             if (request_ != nil) {
 662                 WebThreadLocked lock;
 663                 [[self webView] loadRequest:request_];
 664             }
 665         }
 666
 667         [alert dismissWithClickedButtonIndex:-1 animated:YES];
 668     }
 669 }
 670
 671 - (UIBarButtonItemStyle) rightButtonStyle {
 672     if (style_ == nil) normal:
 673         return UIBarButtonItemStylePlain;
 674     else if ([style_ isEqualToString:@"Normal"])
 675         return UIBarButtonItemStylePlain;
 676     else if ([style_ isEqualToString:@"Highlighted"])
 677         return UIBarButtonItemStyleDone;
 678     else goto normal;
 679 }
 680
 681 - (UIBarButtonItem *) customButton {
 682     if (custom_ == nil)
 683         return nil;
 684     else if (custom_ == [NSNull null])
 685         return (UIBarButtonItem *) [NSNull null];
 686
 687     return [[[UIBarButtonItem alloc]
 688         initWithTitle:static_cast<NSString *>(custom_.operator NSObject *())
 689         style:[self rightButtonStyle]
 690         target:self
 691         action:@selector(customButtonClicked)
 692     ] autorelease];
 693 }
 694
 695 - (UIBarButtonItem *) leftButton {
 696     UINavigationItem *item([self navigationItem]);
 697     if ([item backBarButtonItem] != nil && ![item hidesBackButton])
 698         return nil;
 699
 700     if (UINavigationController *navigation = [self navigationController])
 701         if ([[navigation parentViewController] modalViewController] == navigation)
 702             return [[[UIBarButtonItem alloc]
 703                 initWithTitle:UCLocalize("CLOSE")
 704                 style:UIBarButtonItemStylePlain
 705                 target:self
 706                 action:@selector(close)
 707             ] autorelease];
 708
 709     return nil;
 710 }
 711
 712 - (void) applyLeftButton {
 713     [[self navigationItem] setLeftBarButtonItem:[self leftButton]];
 714 }
 715
 716 - (UIBarButtonItem *) rightButton {
 717     return reloaditem_;
 718 }
 719
 720 - (void) applyLoadingTitle {
 721     [[self navigationItem] setTitle:UCLocalize("LOADING")];
 722 }
 723
 724 - (void) layoutRightButton {
 725     [[loadingitem_ view] addSubview:indicator_];
 726     [[loadingitem_ view] bringSubviewToFront:indicator_];
 727 }
 728
 729 - (void) applyRightButton {
 730     if ([self isLoading]) {
 731         [[self navigationItem] setRightBarButtonItem:loadingitem_ animated:YES];
 732         [self performSelector:@selector(layoutRightButton) withObject:nil afterDelay:0];
 733
 734         [indicator_ startAnimating];
 735         [self applyLoadingTitle];
 736     } else {
 737         [indicator_ stopAnimating];
 738
 739         UIBarButtonItem *button([self customButton]);
 740         if (button == nil)
 741             button = [self rightButton];
 742         else if (button == (UIBarButtonItem *) [NSNull null])
 743             button = nil;
 744
 745         [[self navigationItem] setRightBarButtonItem:button animated:YES];
 746     }
 747 }
 748
 749 - (void) didStartLoading {
 750     // Overridden in subclasses.
 751 }
 752
 753 - (void) _didStartLoading {
 754     [self applyRightButton];
 755
 756     if ([loading_ count] != 1)
 757         return;
 758
 759     if ([self retainsNetworkActivityIndicator])
 760         [delegate_ retainNetworkActivityIndicator];
 761
 762     [self didStartLoading];
 763 }
 764
 765 - (void) didFinishLoading {
 766     // Overridden in subclasses.
 767 }
 768
 769 - (void) _didFinishLoading {
 770     if ([loading_ count] != 0)
 771         return;
 772
 773     [self applyRightButton];
 774     [[self navigationItem] setTitle:title_];
 775
 776     if ([self retainsNetworkActivityIndicator])
 777         [delegate_ releaseNetworkActivityIndicator];
 778
 779     [self didFinishLoading];
 780 }
 781
 782 - (bool) isLoading {
 783     return [loading_ count] != 0;
 784 }
 785
 786 - (id) initWithWidth:(float)width ofClass:(Class)_class {
 787     if ((self = [super init]) != nil) {
 788         width_ = width;
 789         class_ = _class;
 790
 791         allowsNavigationAction_ = true;
 792
 793         loading_ = [NSMutableSet setWithCapacity:5];
 794         indirect_ = [[[IndirectDelegate alloc] initWithDelegate:self] autorelease];
 795
 796         reloaditem_ = [[[UIBarButtonItem alloc]
 797             initWithTitle:UCLocalize("RELOAD")
 798             style:[self rightButtonStyle]
 799             target:self
 800             action:@selector(reloadButtonClicked)
 801         ] autorelease];
 802
 803         loadingitem_ = [[[UIBarButtonItem alloc]
 804             initWithTitle:@" "
 805             style:UIBarButtonItemStylePlain
 806             target:self
 807             action:@selector(reloadButtonClicked)
 808         ] autorelease];
 809
 810         indicator_ = [[[UIActivityIndicatorView alloc] initWithActivityIndicatorStyle:UIActivityIndicatorViewStyleWhite] autorelease];
 811         [indicator_ setFrame:CGRectMake(15, 5, [indicator_ frame].size.width, [indicator_ frame].size.height)];
 812         [indicator_ setAutoresizingMask:UIViewAutoresizingFlexibleLeftMargin];
 813
 814         [self applyLeftButton];
 815         [self applyRightButton];
 816     } return self;
 817 }
 818
 819 - (NSString *) applicationNameForUserAgent {
 820     return nil;
 821 }
 822
 823 - (void) loadView {
 824     CGRect bounds([[UIScreen mainScreen] applicationFrame]);
 825
 826     webview_ = [[[CyteWebView alloc] initWithFrame:bounds] autorelease];
 827     [webview_ setDelegate:self];
 828     [self setView:webview_];
 829
 830     if ([webview_ respondsToSelector:@selector(setDataDetectorTypes:)])
 831         [webview_ setDataDetectorTypes:UIDataDetectorTypeAutomatic];
 832     else
 833         [webview_ setDetectsPhoneNumbers:NO];
 834
 835     [webview_ setScalesPageToFit:YES];
 836
 837     UIWebDocumentView *document([webview_ _documentView]);
 838
 839     // XXX: I think this improves scrolling; the hardcoded-ness sucks
 840     [document setTileSize:CGSizeMake(320, 500)];
 841
 842     [document setBackgroundColor:[UIColor clearColor]];
 843
 844     // XXX: this is terribly (too?) expensive
 845     [document setDrawsBackground:NO];
 846
 847     WebView *webview([document webView]);
 848     WebPreferences *preferences([webview preferences]);
 849
 850     // XXX: I have no clue if I actually /want/ this modification
 851     if ([webview respondsToSelector:@selector(_setLayoutInterval:)])
 852         [webview _setLayoutInterval:0];
 853     else if ([preferences respondsToSelector:@selector(_setLayoutInterval:)])
 854         [preferences _setLayoutInterval:0];
 855
 856     [preferences setCacheModel:WebCacheModelDocumentBrowser];
 857     [preferences setJavaScriptCanOpenWindowsAutomatically:YES];
 858     [preferences setOfflineWebApplicationCacheEnabled:YES];
 859
 860     if (NSString *agent = [self applicationNameForUserAgent])
 861         [webview setApplicationNameForUserAgent:agent];
 862
 863     if ([webview respondsToSelector:@selector(setShouldUpdateWhileOffscreen:)])
 864         [webview setShouldUpdateWhileOffscreen:NO];
 865
 866 #if LogMessages
 867     if ([document respondsToSelector:@selector(setAllowsMessaging:)])
 868         [document setAllowsMessaging:YES];
 869     if ([webview respondsToSelector:@selector(_setAllowsMessaging:)])
 870         [webview _setAllowsMessaging:YES];
 871 #endif
 872
 873     if ([webview_ respondsToSelector:@selector(_scrollView)]) {
 874         scroller_ = [webview_ _scrollView];
 875
 876         [scroller_ setDirectionalLockEnabled:YES];
 877         [scroller_ setDecelerationRate:CYScrollViewDecelerationRateNormal];
 878         [scroller_ setDelaysContentTouches:NO];
 879
 880         [scroller_ setCanCancelContentTouches:YES];
 881     } else if ([webview_ respondsToSelector:@selector(_scroller)]) {
 882         UIScroller *scroller([webview_ _scroller]);
 883         scroller_ = (UIScrollView *) scroller;
 884
 885         [scroller setDirectionalScrolling:YES];
 886         // XXX: we might be better off /not/ setting this on older systems
 887         [scroller setScrollDecelerationFactor:CYScrollViewDecelerationRateNormal]; /* 0.989324 */
 888         [scroller setScrollHysteresis:0]; /* 8 */
 889
 890         [scroller setThumbDetectionEnabled:NO];
 891
 892         // use NO with UIApplicationUseLegacyEvents(YES)
 893         [scroller setEventMode:YES];
 894
 895         // XXX: this is handled by setBounces, right?
 896         //[scroller setAllowsRubberBanding:YES];
 897     }
 898
 899     [scroller_ setFixedBackgroundPattern:YES];
 900     [scroller_ setBackgroundColor:[UIColor clearColor]];
 901     [scroller_ setClipsSubviews:YES];
 902
 903     [scroller_ setBounces:YES];
 904     [scroller_ setScrollingEnabled:YES];
 905     [scroller_ setShowBackgroundShadow:NO];
 906
 907     [self setViewportWidth:width_];
 908
 909     UITableView *table([[[UITableView alloc] initWithFrame:[webview_ bounds] style:UITableViewStyleGrouped] autorelease]);
 910     [table setScrollsToTop:NO];
 911     [webview_ insertSubview:table atIndex:0];
 912
 913     [table setAutoresizingMask:(UIViewAutoresizingFlexibleWidth | UIViewAutoresizingFlexibleHeight)];
 914     [webview_ setAutoresizingMask:(UIViewAutoresizingFlexibleWidth | UIViewAutoresizingFlexibleHeight)];
 915
 916     ready_ = false;
 917 }
 918
 919 - (void) releaseSubviews {
 920     webview_ = nil;
 921     scroller_ = nil;
 922
 923     [self releaseNetworkActivityIndicator];
 924
 925     [super releaseSubviews];
 926 }
 927
 928 - (id) initWithWidth:(float)width {
 929     return [self initWithWidth:width ofClass:[self class]];
 930 }
 931
 932 - (id) init {
 933     return [self initWithWidth:0];
 934 }
 935
 936 - (id) initWithURL:(NSURL *)url {
 937     if ((self = [self init]) != nil) {
 938         [self setURL:url];
 939     } return self;
 940 }
 941
 942 - (id) initWithRequest:(NSURLRequest *)request {
 943     if ((self = [self init]) != nil) {
 944         [self setRequest:request];
 945     } return self;
 946 }
 947
 948 - (void) callFunction:(WebScriptObject *)function {
 949     WebThreadLocked lock;
 950
 951     WebView *webview([[[self webView] _documentView] webView]);
 952     WebFrame *frame([webview mainFrame]);
 953
 954     JSGlobalContextRef context([frame globalContext]);
 955     JSObjectRef object([function JSObject]);
 956     JSObjectCallAsFunction(context, object, NULL, 0, NULL, NULL);
 957 }
 958
 959 - (void) reloadButtonClicked {
 960     [self reloadURLWithCache:NO];
 961 }
 962
 963 - (void) _customButtonClicked {
 964     [self reloadButtonClicked];
 965 }
 966
 967 - (void) customButtonClicked {
 968 #if !AlwaysReload
 969     if (function_ != nil)
 970         [self callFunction:function_];
 971     else
 972 #endif
 973     [self _customButtonClicked];
 974 }
 975
 976 + (float) defaultWidth {
 977     return 980;
 978 }
 979
 980 - (void) setNavigationBarStyle:(NSString *)name {
 981     UIBarStyle style;
 982     if ([name isEqualToString:@"Black"])
 983         style = UIBarStyleBlack;
 984     else
 985         style = UIBarStyleDefault;
 986
 987     [[[self navigationController] navigationBar] setBarStyle:style];
 988 }
 989
 990 - (void) setNavigationBarTintColor:(UIColor *)color {
 991     [[[self navigationController] navigationBar] setTintColor:color];
 992 }
 993
 994 - (void) setBadgeValue:(id)value {
 995     [[[self navigationController] tabBarItem] setBadgeValue:value];
 996 }
 997
 998 - (void) setHidesBackButton:(bool)value {
 999     [[self navigationItem] setHidesBackButton:value];
1000     [self applyLeftButton];
1001 }
1002
1003 - (void) setHidesBackButtonByNumber:(NSNumber *)value {
1004     [self setHidesBackButton:[value boolValue]];
1005 }
1006
1007 - (void) dispatchEvent:(NSString *)event {
1008     [[self webView] dispatchEvent:event];
1009 }
1010
1011 - (bool) hidesNavigationBar {
1012     return hidesNavigationBar_;
1013 }
1014
1015 - (void) _setHidesNavigationBar:(bool)value animated:(bool)animated {
1016     if (visible_)
1017         [[self navigationController] setNavigationBarHidden:(value && [self hidesNavigationBar]) animated:animated];
1018 }
1019
1020 - (void) setHidesNavigationBar:(bool)value {
1021     if (hidesNavigationBar_ != value) {
1022         hidesNavigationBar_ = value;
1023         [self _setHidesNavigationBar:YES animated:YES];
1024     }
1025 }
1026
1027 - (void) setHidesNavigationBarByNumber:(NSNumber *)value {
1028     [self setHidesNavigationBar:[value boolValue]];
1029 }
1030
1031 - (void) setScrollAlwaysBounceVertical:(bool)value {
1032     if ([webview_ respondsToSelector:@selector(_scrollView)]) {
1033         UIScrollView *scroller([webview_ _scrollView]);
1034         [scroller setAlwaysBounceVertical:value];
1035     } else if ([webview_ respondsToSelector:@selector(_scroller)]) {
1036         //UIScroller *scroller([webview_ _scroller]);
1037         // XXX: I am sad here.
1038     } else return;
1039 }
1040
1041 - (void) setScrollAlwaysBounceVerticalNumber:(NSNumber *)value {
1042     [self setScrollAlwaysBounceVertical:[value boolValue]];
1043 }
1044
1045 - (void) setScrollIndicatorStyle:(UIScrollViewIndicatorStyle)style {
1046     if ([webview_ respondsToSelector:@selector(_scrollView)]) {
1047         UIScrollView *scroller([webview_ _scrollView]);
1048         [scroller setIndicatorStyle:style];
1049     } else if ([webview_ respondsToSelector:@selector(_scroller)]) {
1050         UIScroller *scroller([webview_ _scroller]);
1051         [scroller setScrollerIndicatorStyle:style];
1052     } else return;
1053 }
1054
1055 - (void) setScrollIndicatorStyleWithName:(NSString *)style {
1056     UIScrollViewIndicatorStyle value;
1057
1058     if (false);
1059     else if ([style isEqualToString:@"default"])
1060         value = UIScrollViewIndicatorStyleDefault;
1061     else if ([style isEqualToString:@"black"])
1062         value = UIScrollViewIndicatorStyleBlack;
1063     else if ([style isEqualToString:@"white"])
1064         value = UIScrollViewIndicatorStyleWhite;
1065     else return;
1066
1067     [self setScrollIndicatorStyle:value];
1068 }
1069
1070 - (void) viewWillAppear:(BOOL)animated {
1071     visible_ = true;
1072
1073     if ([self hidesNavigationBar])
1074         [self _setHidesNavigationBar:YES animated:animated];
1075
1076     // XXX: why isn't this evern called automatically?
1077     [[self webView] setNeedsLayout];
1078
1079     [self dispatchEvent:@"CydiaViewWillAppear"];
1080     [super viewWillAppear:animated];
1081 }
1082
1083 - (void) viewDidAppear:(BOOL)animated {
1084     [super viewDidAppear:animated];
1085     [self dispatchEvent:@"CydiaViewDidAppear"];
1086 }
1087
1088 - (void) viewWillDisappear:(BOOL)animated {
1089     [self dispatchEvent:@"CydiaViewWillDisappear"];
1090     [super viewWillDisappear:animated];
1091
1092     if ([self hidesNavigationBar])
1093         [self _setHidesNavigationBar:NO animated:animated];
1094
1095     visible_ = false;
1096 }
1097
1098 - (void) viewDidDisappear:(BOOL)animated {
1099     [super viewDidDisappear:animated];
1100     [self dispatchEvent:@"CydiaViewDidDisappear"];
1101 }
1102
1103 @end