CyteKit/WebView.mm

   1 /* Cydia - iPhone UIKit Front-End for Debian APT
   2  * Copyright (C) 2008-2015  Jay Freeman (saurik)
   3 */
   4
   5 /* GNU General Public License, Version 3 {{{ */
   6 /*
   7  * Cydia is free software: you can redistribute it and/or modify
   8  * it under the terms of the GNU General Public License as published
   9  * by the Free Software Foundation, either version 3 of the License,
  10  * or (at your option) any later version.
  11  *
  12  * Cydia is distributed in the hope that it will be useful, but
  13  * WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  * GNU General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU General Public License
  18  * along with Cydia.  If not, see <http://www.gnu.org/licenses/>.
  19 **/
  20 /* }}} */
  21
  22 #include "CyteKit/UCPlatform.h"
  23
  24 #include "CyteKit/dispatchEvent.h"
  25 #include "CyteKit/WebView.h"
  26
  27 #include "Substrate.hpp"
  28
  29 #include "iPhonePrivate.h"
  30
  31 // CYWebPolicyDecision* {{{
  32 @interface CYWebPolicyDecisionMediator : NSObject <
  33     WebPolicyDecisionListener
  34 > {
  35     id<WebPolicyDecisionListener> listener_;
  36     CYWebPolicyDecision decision_;
  37 }
  38
  39 - (id) initWithListener:(id<WebPolicyDecisionListener>)listener;
  40
  41 - (CYWebPolicyDecision) decision;
  42 - (bool) decided;
  43 - (bool) decide;
  44
  45 @end
  46
  47 @implementation CYWebPolicyDecisionMediator
  48
  49 - (id) initWithListener:(id<WebPolicyDecisionListener>)listener {
  50     if ((self = [super init]) != nil) {
  51         listener_ = listener;
  52     } return self;
  53 }
  54
  55 - (CYWebPolicyDecision) decision {
  56     return decision_;
  57 }
  58
  59 - (bool) decided {
  60     return decision_ != CYWebPolicyDecisionUnknown;
  61 }
  62
  63 - (bool) decide {
  64     switch (decision_) {
  65         case CYWebPolicyDecisionUnknown:
  66         default:
  67             NSLog(@"CYWebPolicyDecisionUnknown");
  68             return false;
  69
  70         case CYWebPolicyDecisionDownload: [listener_ download]; break;
  71         case CYWebPolicyDecisionIgnore: [listener_ ignore]; break;
  72         case CYWebPolicyDecisionUse: [listener_ use]; break;
  73     }
  74
  75     return true;
  76 }
  77
  78 - (void) download {
  79     decision_ = CYWebPolicyDecisionDownload;
  80 }
  81
  82 - (void) ignore {
  83     decision_ = CYWebPolicyDecisionIgnore;
  84 }
  85
  86 - (void) use {
  87     decision_ = CYWebPolicyDecisionUse;
  88 }
  89
  90 @end
  91 // }}}
  92
  93 @implementation CyteWebView : UIWebView {
  94 }
  95
  96 #if ShowInternals
  97 #include "CyteKit/UCInternal.h"
  98 #endif
  99
 100 - (id) initWithFrame:(CGRect)frame {
 101     if ((self = [super initWithFrame:frame]) != nil) {
 102     } return self;
 103 }
 104
 105 - (void) dealloc {
 106     if (kCFCoreFoundationVersionNumber < kCFCoreFoundationVersionNumber_iPhoneOS_3_0) {
 107         UIWebViewInternal *&_internal(MSHookIvar<UIWebViewInternal *>(self, "_internal"));
 108         if (&_internal != NULL) {
 109             UIWebViewWebViewDelegate *&webViewDelegate(MSHookIvar<UIWebViewWebViewDelegate *>(_internal, "webViewDelegate"));
 110             if (&webViewDelegate != NULL)
 111                 [webViewDelegate _clearUIWebView];
 112         }
 113     }
 114
 115     [super dealloc];
 116 }
 117
 118 - (NSString *) description {
 119     return [NSString stringWithFormat:@"<%s: %p, %@>", class_getName([self class]), self, [[[self request] URL] absoluteString]];
 120 }
 121
 122 - (id<CyteWebViewDelegate>) delegate {
 123     return (id<CyteWebViewDelegate>) [super delegate];
 124 }
 125
 126 - (void) setDelegate:(id<CyteWebViewDelegate>)delegate {
 127     [super setDelegate:delegate];
 128 }
 129
 130 /*- (WebView *) webView:(WebView *)view createWebViewWithRequest:(NSURLRequest *)request {
 131     id<CyteWebViewDelegate> delegate([self delegate]);
 132     WebView *created(nil);
 133     if (created == nil && [delegate respondsToSelector:@selector(webView:createWebViewWithRequest:)])
 134         created = [delegate webView:view createWebViewWithRequest:request];
 135     if (created == nil && [UIWebView instancesRespondToSelector:@selector(webView:createWebViewWithRequest:)])
 136         created = [super webView:view createWebViewWithRequest:request];
 137     return created;
 138 }*/
 139
 140 // webView:addMessageToConsole: (X.Xx) {{{
 141 static void $UIWebViewWebViewDelegate$webView$addMessageToConsole$(UIWebViewWebViewDelegate *self, SEL sel, WebView *view, NSDictionary *message) {
 142     UIWebView *uiWebView(MSHookIvar<UIWebView *>(self, "uiWebView"));
 143     if ([uiWebView respondsToSelector:@selector(webView:addMessageToConsole:)])
 144         [uiWebView webView:view addMessageToConsole:message];
 145 }
 146
 147 - (void) webView:(WebView *)view addMessageToConsole:(NSDictionary *)message {
 148     id<CyteWebViewDelegate> delegate([self delegate]);
 149     if ([delegate respondsToSelector:@selector(webView:addMessageToConsole:)])
 150         [delegate webView:view addMessageToConsole:message];
 151     if ([UIWebView instancesRespondToSelector:@selector(webView:addMessageToConsole:)])
 152         [super webView:view addMessageToConsole:message];
 153 }
 154 // }}}
 155 // webView:decidePolicyForNavigationAction:request:frame:decisionListener: (2.0+) {{{
 156 - (void) webView:(WebView *)view decidePolicyForNavigationAction:(NSDictionary *)action request:(NSURLRequest *)request frame:(WebFrame *)frame decisionListener:(id<WebPolicyDecisionListener>)listener {
 157     id<CyteWebViewDelegate> delegate([self delegate]);
 158     CYWebPolicyDecisionMediator *mediator([[[CYWebPolicyDecisionMediator alloc] initWithListener:listener] autorelease]);
 159     if (![mediator decided] && [delegate respondsToSelector:@selector(webView:decidePolicyForNavigationAction:request:frame:decisionListener:)])
 160         [delegate webView:view decidePolicyForNavigationAction:action request:request frame:frame decisionListener:mediator];
 161     if (![mediator decided] && [UIWebView instancesRespondToSelector:@selector(webView:decidePolicyForNavigationAction:request:frame:decisionListener:)])
 162         [super webView:view decidePolicyForNavigationAction:action request:request frame:frame decisionListener:mediator];
 163     if ([delegate respondsToSelector:@selector(webView:didDecidePolicy:forNavigationAction:request:frame:)])
 164         [delegate webView:view didDecidePolicy:[mediator decision] forNavigationAction:action request:request frame:frame];
 165     [mediator decide];
 166 }
 167 // }}}
 168 // webView:decidePolicyForNewWindowAction:request:newFrameName:decisionListener: (3.0+) {{{
 169 static void $UIWebViewWebViewDelegate$webView$decidePolicyForNewWindowAction$request$newFrameName$decisionListener$(UIWebViewWebViewDelegate *self, SEL sel, WebView *view, NSDictionary *action, NSURLRequest *request, NSString *frame, id<WebPolicyDecisionListener> listener) {
 170     UIWebView *uiWebView(MSHookIvar<UIWebView *>(self, "uiWebView"));
 171     if ([uiWebView respondsToSelector:@selector(webView:decidePolicyForNewWindowAction:request:newFrameName:decisionListener:)])
 172         [uiWebView webView:view decidePolicyForNewWindowAction:action request:request newFrameName:frame decisionListener:listener];
 173 }
 174
 175 - (void) webView:(WebView *)view decidePolicyForNewWindowAction:(NSDictionary *)action request:(NSURLRequest *)request newFrameName:(NSString *)frame decisionListener:(id<WebPolicyDecisionListener>)listener {
 176     id<CyteWebViewDelegate> delegate([self delegate]);
 177     CYWebPolicyDecisionMediator *mediator([[[CYWebPolicyDecisionMediator alloc] initWithListener:listener] autorelease]);
 178     if (![mediator decided] && [delegate respondsToSelector:@selector(webView:decidePolicyForNewWindowAction:request:newFrameName:decisionListener:)])
 179         [delegate webView:view decidePolicyForNewWindowAction:action request:request newFrameName:frame decisionListener:mediator];
 180     if (![mediator decided] && [UIWebView instancesRespondToSelector:@selector(webView:decidePolicyForNewWindowAction:request:newFrameName:decisionListener:)])
 181         [super webView:view decidePolicyForNewWindowAction:action request:request newFrameName:frame decisionListener:mediator];
 182     [mediator decide];
 183 }
 184 // }}}
 185 // webView:didClearWindowObject:forFrame: (3.2+) {{{
 186 static void $UIWebViewWebViewDelegate$webView$didClearWindowObject$forFrame$(UIWebViewWebViewDelegate *self, SEL sel, WebView *view, WebScriptObject *window, WebFrame *frame) {
 187     UIWebView *uiWebView(MSHookIvar<UIWebView *>(self, "uiWebView"));
 188     if ([uiWebView respondsToSelector:@selector(webView:didClearWindowObject:forFrame:)])
 189         [uiWebView webView:view didClearWindowObject:window forFrame:frame];
 190 }
 191
 192 - (void) webView:(WebView *)view didClearWindowObject:(WebScriptObject *)window forFrame:(WebFrame *)frame {
 193     id<CyteWebViewDelegate> delegate([self delegate]);
 194     if ([delegate respondsToSelector:@selector(webView:didClearWindowObject:forFrame:)])
 195         [delegate webView:view didClearWindowObject:window forFrame:frame];
 196     if ([UIWebView instancesRespondToSelector:@selector(webView:didClearWindowObject:forFrame:)])
 197         [super webView:view didClearWindowObject:window forFrame:frame];
 198 }
 199 // }}}
 200 // webView:didCommitLoadForFrame: (3.0+) {{{
 201 static void $UIWebViewWebViewDelegate$webView$didCommitLoadForFrame$(UIWebViewWebViewDelegate *self, SEL sel, WebView *view, WebFrame *frame) {
 202     UIWebView *uiWebView(MSHookIvar<UIWebView *>(self, "uiWebView"));
 203     if ([uiWebView respondsToSelector:@selector(webView:didCommitLoadForFrame:)])
 204         [uiWebView webView:view didCommitLoadForFrame:frame];
 205 }
 206
 207 - (void) webView:(WebView *)view didCommitLoadForFrame:(WebFrame *)frame {
 208     id<CyteWebViewDelegate> delegate([self delegate]);
 209     if ([delegate respondsToSelector:@selector(webView:didCommitLoadForFrame:)])
 210         [delegate webView:view didCommitLoadForFrame:frame];
 211     if ([UIWebView instancesRespondToSelector:@selector(webView:didCommitLoadForFrame:)])
 212         [super webView:view didCommitLoadForFrame:frame];
 213 }
 214 // }}}
 215 // webView:didFailLoadWithError:forFrame: (2.0+) {{{
 216 - (void) webView:(WebView *)view didFailLoadWithError:(NSError *)error forFrame:(WebFrame *)frame {
 217     id<CyteWebViewDelegate> delegate([self delegate]);
 218     if ([delegate respondsToSelector:@selector(webView:didFailLoadWithError:forFrame:)])
 219         [delegate webView:view didFailLoadWithError:error forFrame:frame];
 220     if ([UIWebView instancesRespondToSelector:@selector(webView:didFailLoadWithError:forFrame:)])
 221         [super webView:view didFailLoadWithError:error forFrame:frame];
 222 }
 223 // }}}
 224 // webView:didFailProvisionalLoadWithError:forFrame: (2.0+) {{{
 225 - (void) webView:(WebView *)view didFailProvisionalLoadWithError:(NSError *)error forFrame:(WebFrame *)frame {
 226     id<CyteWebViewDelegate> delegate([self delegate]);
 227     if ([delegate respondsToSelector:@selector(webView:didFailProvisionalLoadWithError:forFrame:)])
 228         [delegate webView:view didFailProvisionalLoadWithError:error forFrame:frame];
 229     if ([UIWebView instancesRespondToSelector:@selector(webView:didFailProvisionalLoadWithError:forFrame:)])
 230         [super webView:view didFailProvisionalLoadWithError:error forFrame:frame];
 231 }
 232 // }}}
 233 // webView:didFinishLoadForFrame: (2.0+) {{{
 234 - (void) webView:(WebView *)view didFinishLoadForFrame:(WebFrame *)frame {
 235     id<CyteWebViewDelegate> delegate([self delegate]);
 236     if ([delegate respondsToSelector:@selector(webView:didFinishLoadForFrame:)])
 237         [delegate webView:view didFinishLoadForFrame:frame];
 238     if ([UIWebView instancesRespondToSelector:@selector(webView:didFinishLoadForFrame:)])
 239         [super webView:view didFinishLoadForFrame:frame];
 240 }
 241 // }}}
 242 // webView:didReceiveTitle:forFrame: (3.2+) {{{
 243 static void $UIWebViewWebViewDelegate$webView$didReceiveTitle$forFrame$(UIWebViewWebViewDelegate *self, SEL sel, WebView *view, NSString *title, WebFrame *frame) {
 244     UIWebView *uiWebView(MSHookIvar<UIWebView *>(self, "uiWebView"));
 245     if ([uiWebView respondsToSelector:@selector(webView:didReceiveTitle:forFrame:)])
 246         [uiWebView webView:view didReceiveTitle:title forFrame:frame];
 247 }
 248
 249 - (void) webView:(WebView *)view didReceiveTitle:(NSString *)title forFrame:(WebFrame *)frame {
 250     id<CyteWebViewDelegate> delegate([self delegate]);
 251     if ([delegate respondsToSelector:@selector(webView:didReceiveTitle:forFrame:)])
 252         [delegate webView:view didReceiveTitle:title forFrame:frame];
 253     if ([UIWebView instancesRespondToSelector:@selector(webView:didReceiveTitle:forFrame:)])
 254         [super webView:view didReceiveTitle:title forFrame:frame];
 255 }
 256 // }}}
 257 // webView:didStartProvisionalLoadForFrame: (2.0+) {{{
 258 - (void) webView:(WebView *)view didStartProvisionalLoadForFrame:(WebFrame *)frame {
 259     id<CyteWebViewDelegate> delegate([self delegate]);
 260     if ([delegate respondsToSelector:@selector(webView:didStartProvisionalLoadForFrame:)])
 261         [delegate webView:view didStartProvisionalLoadForFrame:frame];
 262     if ([UIWebView instancesRespondToSelector:@selector(webView:didStartProvisionalLoadForFrame:)])
 263         [super webView:view didStartProvisionalLoadForFrame:frame];
 264 }
 265 // }}}
 266 // webView:resource:didCancelAuthenticationChallenge:fromDataSource: {{{
 267 - (void) webView:(WebView *)view resource:(id)identifier didCancelAuthenticationChallenge:(NSURLAuthenticationChallenge *)challenge fromDataSource:(WebDataSource *)source {
 268     id<CyteWebViewDelegate> delegate([self delegate]);
 269     if ([UIWebView respondsToSelector:@selector(webView:resource:didCancelAuthenticationChallenge:fromDataSource:)])
 270         [super webView:view resource:identifier didCancelAuthenticationChallenge:challenge fromDataSource:source];
 271     if ([delegate respondsToSelector:@selector(webView:resource:didCancelAuthenticationChallenge:fromDataSource:)])
 272         [delegate webView:view resource:identifier didCancelAuthenticationChallenge:challenge fromDataSource:source];
 273 }
 274 // }}}
 275 // webView:resource:didReceiveAuthenticationChallenge:fromDataSource: {{{
 276 - (void) webView:(WebView *)view resource:(id)identifier didReceiveAuthenticationChallenge:(NSURLAuthenticationChallenge *)challenge fromDataSource:(WebDataSource *)source {
 277     id<CyteWebViewDelegate> delegate([self delegate]);
 278     if ([UIWebView respondsToSelector:@selector(webView:resource:didReceiveAuthenticationChallenge:fromDataSource:)])
 279         [super webView:view resource:identifier didReceiveAuthenticationChallenge:challenge fromDataSource:source];
 280     if ([delegate respondsToSelector:@selector(webView:resource:didReceiveAuthenticationChallenge:fromDataSource:)])
 281         [delegate webView:view resource:identifier didReceiveAuthenticationChallenge:challenge fromDataSource:source];
 282 }
 283 // }}}
 284 // webView:resource:willSendRequest:redirectResponse:fromDataSource: (3.2+) {{{
 285 static NSURLRequest *$UIWebViewWebViewDelegate$webView$resource$willSendRequest$redirectResponse$fromDataSource$(UIWebViewWebViewDelegate *self, SEL sel, WebView *view, id identifier, NSURLRequest *request, NSURLResponse *response, WebDataSource *source) {
 286     UIWebView *uiWebView(MSHookIvar<UIWebView *>(self, "uiWebView"));
 287     if ([uiWebView respondsToSelector:@selector(webView:resource:willSendRequest:redirectResponse:fromDataSource:)])
 288         request = [uiWebView webView:view resource:identifier willSendRequest:request redirectResponse:response fromDataSource:source];
 289     return request;
 290 }
 291
 292 - (NSURLRequest *) webView:(WebView *)view resource:(id)identifier willSendRequest:(NSURLRequest *)request redirectResponse:(NSURLResponse *)response fromDataSource:(WebDataSource *)source {
 293     id<CyteWebViewDelegate> delegate([self delegate]);
 294     if ([UIWebView instancesRespondToSelector:@selector(webView:resource:willSendRequest:redirectResponse:fromDataSource:)])
 295         request = [super webView:view resource:identifier willSendRequest:request redirectResponse:response fromDataSource:source];
 296     if ([delegate respondsToSelector:@selector(webView:resource:willSendRequest:redirectResponse:fromDataSource:)])
 297         request = [delegate webView:view resource:identifier willSendRequest:request redirectResponse:response fromDataSource:source];
 298     return request;
 299 }
 300 // }}}
 301 // webThreadWebView:resource:willSendRequest:redirectResponse:fromDataSource: {{{
 302 - (NSURLRequest *) webThreadWebView:(WebView *)view resource:(id)identifier willSendRequest:(NSURLRequest *)request redirectResponse:(NSURLResponse *)response fromDataSource:(WebDataSource *)source {
 303     id<CyteWebViewDelegate> delegate([self delegate]);
 304     if ([UIWebView instancesRespondToSelector:@selector(webThreadWebView:resource:willSendRequest:redirectResponse:fromDataSource:)])
 305         request = [super webThreadWebView:view resource:identifier willSendRequest:request redirectResponse:response fromDataSource:source];
 306     if ([delegate respondsToSelector:@selector(webThreadWebView:resource:willSendRequest:redirectResponse:fromDataSource:)])
 307         request = [delegate webThreadWebView:view resource:identifier willSendRequest:request redirectResponse:response fromDataSource:source];
 308     return request;
 309 }
 310 // }}}
 311 // webView:runJavaScriptAlertPanelWithMessage:initiatedByFrame: (2.1+) {{{
 312 - (void) webView:(WebView *)view runJavaScriptAlertPanelWithMessage:(NSString *)message initiatedByFrame:(WebFrame *)frame {
 313     [[self retain] autorelease];
 314     id<CyteWebViewDelegate> delegate([self delegate]);
 315     if ([UIWebView instancesRespondToSelector:@selector(webView:runJavaScriptAlertPanelWithMessage:initiatedByFrame:)])
 316         if (
 317             ![delegate respondsToSelector:@selector(webView:shouldRunJavaScriptAlertPanelWithMessage:initiatedByFrame:)] ||
 318             [delegate webView:view shouldRunJavaScriptAlertPanelWithMessage:message initiatedByFrame:frame]
 319         )
 320             [super webView:view runJavaScriptAlertPanelWithMessage:message initiatedByFrame:frame];
 321 }
 322 // }}}
 323 // webView:runJavaScriptConfirmPanelWithMessage:initiatedByFrame: (2.1+) {{{
 324 - (BOOL) webView:(WebView *)view runJavaScriptConfirmPanelWithMessage:(NSString *)message initiatedByFrame:(WebFrame *)frame {
 325     [[self retain] autorelease];
 326     id<CyteWebViewDelegate> delegate([self delegate]);
 327     if ([UIWebView instancesRespondToSelector:@selector(webView:runJavaScriptConfirmPanelWithMessage:initiatedByFrame:)])
 328         if (
 329             ![delegate respondsToSelector:@selector(webView:shouldRunJavaScriptConfirmPanelWithMessage:initiatedByFrame:)] ||
 330             [delegate webView:view shouldRunJavaScriptConfirmPanelWithMessage:message initiatedByFrame:frame]
 331         )
 332             return [super webView:view runJavaScriptConfirmPanelWithMessage:message initiatedByFrame:frame];
 333     return NO;
 334 }
 335 // }}}
 336 // webView:runJavaScriptTextInputPanelWithPrompt:defaultText:initiatedByFrame: (2.1+) {{{
 337 - (NSString *) webView:(WebView *)view runJavaScriptTextInputPanelWithPrompt:(NSString *)prompt defaultText:(NSString *)text initiatedByFrame:(WebFrame *)frame {
 338     [[self retain] autorelease];
 339     id<CyteWebViewDelegate> delegate([self delegate]);
 340     if ([UIWebView instancesRespondToSelector:@selector(webView:runJavaScriptTextInputPanelWithPrompt:defaultText:initiatedByFrame:)])
 341         if (
 342             ![delegate respondsToSelector:@selector(webView:shouldRunJavaScriptTextInputPanelWithPrompt:defaultText:initiatedByFrame:)] ||
 343             [delegate webView:view shouldRunJavaScriptTextInputPanelWithPrompt:prompt defaultText:text initiatedByFrame:frame]
 344         )
 345             return [super webView:view runJavaScriptTextInputPanelWithPrompt:prompt defaultText:text initiatedByFrame:frame];
 346     return nil;
 347 }
 348 // }}}
 349 // webViewClose: (3.2+) {{{
 350 static void $UIWebViewWebViewDelegate$webViewClose$(UIWebViewWebViewDelegate *self, SEL sel, WebView *view) {
 351     UIWebView *uiWebView(MSHookIvar<UIWebView *>(self, "uiWebView"));
 352     if ([uiWebView respondsToSelector:@selector(webViewClose:)])
 353         [uiWebView webViewClose:view];
 354 }
 355
 356 - (void) webViewClose:(WebView *)view {
 357     id<CyteWebViewDelegate> delegate([self delegate]);
 358     if ([delegate respondsToSelector:@selector(webViewClose:)])
 359         [delegate webViewClose:view];
 360     if ([UIWebView instancesRespondToSelector:@selector(webViewClose:)])
 361         [super webViewClose:view];
 362 }
 363 // }}}
 364
 365 - (void) _updateViewSettings {
 366     [super _updateViewSettings];
 367
 368     id<CyteWebViewDelegate> delegate([self delegate]);
 369     if ([delegate respondsToSelector:@selector(webViewUpdateViewSettings:)])
 370         [delegate webViewUpdateViewSettings:self];
 371 }
 372
 373 - (void) dispatchEvent:(NSString *)event {
 374     [[self _documentView] dispatchEvent:event];
 375 }
 376
 377 - (void) reloadFromOrigin {
 378     [[[self _documentView] webView] reloadFromOrigin:nil];
 379 }
 380
 381 - (UIScrollView *) scrollView {
 382     if ([self respondsToSelector:@selector(_scrollView)])
 383         return [self _scrollView];
 384     else if ([self respondsToSelector:@selector(_scroller)])
 385         return (UIScrollView *) [self _scroller];
 386     else return nil;
 387 }
 388
 389 - (void) setNeedsLayout {
 390     [super setNeedsLayout];
 391
 392     WebFrame *frame([[[self _documentView] webView] mainFrame]);
 393     if ([frame respondsToSelector:@selector(setNeedsLayout)])
 394         [frame setNeedsLayout];
 395 }
 396
 397 - (NSURLRequest *) request {
 398     WebFrame *frame([[[self _documentView] webView] mainFrame]);
 399     return [([frame provisionalDataSource] ?: [frame dataSource]) request];
 400 }
 401
 402 @end
 403
 404 static void $UIWebViewWebViewDelegate$_clearUIWebView(UIWebViewWebViewDelegate *self, SEL sel) {
 405     MSHookIvar<UIWebView *>(self, "uiWebView") = nil;
 406 }
 407
 408 __attribute__((__constructor__)) static void $() {
 409     if (Class $UIWebViewWebViewDelegate = objc_getClass("UIWebViewWebViewDelegate")) {
 410         class_addMethod($UIWebViewWebViewDelegate, @selector(webView:addMessageToConsole:), (IMP) &$UIWebViewWebViewDelegate$webView$addMessageToConsole$, "v16@0:4@8@12");
 411         class_addMethod($UIWebViewWebViewDelegate, @selector(webView:decidePolicyForNewWindowAction:request:newFrameName:decisionListener:), (IMP) &$UIWebViewWebViewDelegate$webView$decidePolicyForNewWindowAction$request$newFrameName$decisionListener$, "v28@0:4@8@12@16@20@24");
 412         class_addMethod($UIWebViewWebViewDelegate, @selector(webView:didClearWindowObject:forFrame:), (IMP) &$UIWebViewWebViewDelegate$webView$didClearWindowObject$forFrame$, "v20@0:4@8@12@16");
 413         class_addMethod($UIWebViewWebViewDelegate, @selector(webView:didCommitLoadForFrame:), (IMP) &$UIWebViewWebViewDelegate$webView$didCommitLoadForFrame$, "v16@0:4@8@12");
 414         class_addMethod($UIWebViewWebViewDelegate, @selector(webView:didReceiveTitle:forFrame:), (IMP) &$UIWebViewWebViewDelegate$webView$didReceiveTitle$forFrame$, "v20@0:4@8@12@16");
 415         class_addMethod($UIWebViewWebViewDelegate, @selector(webView:resource:willSendRequest:redirectResponse:fromDataSource:), (IMP) &$UIWebViewWebViewDelegate$webView$resource$willSendRequest$redirectResponse$fromDataSource$, "@28@0:4@8@12@16@20@24");
 416         class_addMethod($UIWebViewWebViewDelegate, @selector(webViewClose:), (IMP) &$UIWebViewWebViewDelegate$webViewClose$, "v12@0:4@8");
 417         class_addMethod($UIWebViewWebViewDelegate, @selector(_clearUIWebView), (IMP) &$UIWebViewWebViewDelegate$_clearUIWebView, "v8@0:4");
 418     }
 419 }
 420
 421 @implementation UIWebDocumentView (Cydia)
 422
 423 - (void) _setScrollerOffset:(CGPoint)offset {
 424     UIScroller *scroller([self _scroller]);
 425
 426     CGSize size([scroller contentSize]);
 427     CGSize bounds([scroller bounds].size);
 428
 429     CGPoint max;
 430     max.x = size.width - bounds.width;
 431     max.y = size.height - bounds.height;
 432
 433     // wtf Apple?!
 434     if (max.x < 0)
 435         max.x = 0;
 436     if (max.y < 0)
 437         max.y = 0;
 438
 439     offset.x = offset.x < 0 ? 0 : offset.x > max.x ? max.x : offset.x;
 440     offset.y = offset.y < 0 ? 0 : offset.y > max.y ? max.y : offset.y;
 441
 442     [scroller setOffset:offset];
 443 }
 444
 445 @end