Source/WebKit2/UIProcess/API/mac/WKView.mm

   1 /*
   2  * Copyright (C) 2010, 2011 Apple Inc. All rights reserved.
   3  *
   4  * Redistribution and use in source and binary forms, with or without
   5  * modification, are permitted provided that the following conditions
   6  * are met:
   7  * 1. Redistributions of source code must retain the above copyright
   8  *    notice, this list of conditions and the following disclaimer.
   9  * 2. Redistributions in binary form must reproduce the above copyright
  10  *    notice, this list of conditions and the following disclaimer in the
  11  *    documentation and/or other materials provided with the distribution.
  12  *
  13  * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
  14  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
  15  * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  16  * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
  17  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  18  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  19  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  20  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  21  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  22  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
  23  * THE POSSIBILITY OF SUCH DAMAGE.
  24  */
  25
  26 #import "config.h"
  27 #import "WKView.h"
  28
  29 #import "AttributedString.h"
  30 #import "ChunkedUpdateDrawingAreaProxy.h"
  31 #import "DataReference.h"
  32 #import "DrawingAreaProxyImpl.h"
  33 #import "EditorState.h"
  34 #import "FindIndicator.h"
  35 #import "FindIndicatorWindow.h"
  36 #import "LayerTreeContext.h"
  37 #import "Logging.h"
  38 #import "NativeWebKeyboardEvent.h"
  39 #import "NativeWebMouseEvent.h"
  40 #import "PDFViewController.h"
  41 #import "PageClientImpl.h"
  42 #import "PasteboardTypes.h"
  43 #import "Region.h"
  44 #import "RunLoop.h"
  45 #import "TextChecker.h"
  46 #import "TextCheckerState.h"
  47 #import "WKAPICast.h"
  48 #import "WKFullScreenWindowController.h"
  49 #import "WKPrintingView.h"
  50 #import "WKStringCF.h"
  51 #import "WKTextInputWindowController.h"
  52 #import "WKViewInternal.h"
  53 #import "WKViewPrivate.h"
  54 #import "WebContext.h"
  55 #import "WebEventFactory.h"
  56 #import "WebFullScreenManagerProxy.h"
  57 #import "WebPage.h"
  58 #import "WebPageProxy.h"
  59 #import "WebProcessProxy.h"
  60 #import "WebSystemInterface.h"
  61 #import <QuartzCore/QuartzCore.h>
  62 #import <WebCore/ColorMac.h>
  63 #import <WebCore/DragController.h>
  64 #import <WebCore/DragData.h>
  65 #import <WebCore/LocalizedStrings.h>
  66 #import <WebCore/FloatRect.h>
  67 #import <WebCore/IntRect.h>
  68 #import <WebCore/KeyboardEvent.h>
  69 #import <WebCore/PlatformMouseEvent.h>
  70 #import <WebCore/PlatformScreen.h>
  71 #import <WebKitSystemInterface.h>
  72 #import <wtf/RefPtr.h>
  73 #import <wtf/RetainPtr.h>
  74
  75 @interface NSApplication (WKNSApplicationDetails)
  76 - (void)speakString:(NSString *)string;
  77 - (void)_setCurrentEvent:(NSEvent *)event;
  78 @end
  79
  80 @interface NSObject (WKNSTextInputContextDetails)
  81 - (BOOL)wantsToHandleMouseEvents;
  82 - (BOOL)handleMouseEvent:(NSEvent *)event;
  83 @end
  84
  85 @interface NSWindow (WKNSWindowDetails)
  86 - (NSRect)_growBoxRect;
  87 - (id)_growBoxOwner;
  88 - (void)_setShowOpaqueGrowBoxForOwner:(id)owner;
  89 - (BOOL)_updateGrowBoxForWindowFrameChange;
  90 @end
  91
  92 using namespace WebKit;
  93 using namespace WebCore;
  94
  95 namespace WebKit {
  96
  97 typedef id <NSValidatedUserInterfaceItem> ValidationItem;
  98 typedef Vector<RetainPtr<ValidationItem> > ValidationVector;
  99 typedef HashMap<String, ValidationVector> ValidationMap;
 100
 101 }
 102
 103 struct WKViewInterpretKeyEventsParameters {
 104     bool eventInterpretationHadSideEffects;
 105     bool consumedByIM;
 106     bool executingSavedKeypressCommands;
 107     Vector<KeypressCommand>* commands;
 108 };
 109
 110 @interface WKViewData : NSObject {
 111 @public
 112     OwnPtr<PageClientImpl> _pageClient;
 113     RefPtr<WebPageProxy> _page;
 114
 115     // For ToolTips.
 116     NSToolTipTag _lastToolTipTag;
 117     id _trackingRectOwner;
 118     void* _trackingRectUserData;
 119
 120     RetainPtr<NSView> _layerHostingView;
 121
 122     RetainPtr<id> _remoteAccessibilityChild;
 123
 124     // For asynchronous validation.
 125     ValidationMap _validationMap;
 126
 127     OwnPtr<PDFViewController> _pdfViewController;
 128
 129     OwnPtr<FindIndicatorWindow> _findIndicatorWindow;
 130     // We keep here the event when resending it to
 131     // the application to distinguish the case of a new event from one
 132     // that has been already sent to WebCore.
 133     RetainPtr<NSEvent> _keyDownEventBeingResent;
 134     WKViewInterpretKeyEventsParameters* _interpretKeyEventsParameters;
 135
 136     NSSize _resizeScrollOffset;
 137
 138     // The identifier of the plug-in we want to send complex text input to, or 0 if there is none.
 139     uint64_t _pluginComplexTextInputIdentifier;
 140
 141     bool _inBecomeFirstResponder;
 142     bool _inResignFirstResponder;
 143     NSEvent *_mouseDownEvent;
 144     BOOL _ignoringMouseDraggedEvents;
 145     BOOL _dragHasStarted;
 146
 147 #if ENABLE(GESTURE_EVENTS)
 148     id _endGestureMonitor;
 149 #endif
 150
 151 #if ENABLE(FULLSCREEN_API)
 152     RetainPtr<WKFullScreenWindowController> _fullScreenWindowController;
 153 #endif
 154
 155     BOOL _hasSpellCheckerDocumentTag;
 156     NSInteger _spellCheckerDocumentTag;
 157
 158     BOOL _inSecureInputState;
 159 }
 160 @end
 161
 162 @interface WKResponderChainSink : NSResponder {
 163     NSResponder *_lastResponderInChain;
 164     bool _didReceiveUnhandledCommand;
 165 }
 166 - (id)initWithResponderChain:(NSResponder *)chain;
 167 - (void)detach;
 168 - (bool)didReceiveUnhandledCommand;
 169 @end
 170
 171 @implementation WKViewData
 172 @end
 173
 174 @implementation WKView
 175
 176 - (id)initWithFrame:(NSRect)frame
 177 {
 178     return [self initWithFrame:frame contextRef:toAPI(WebContext::sharedProcessContext())];
 179 }
 180
 181 - (id)initWithFrame:(NSRect)frame contextRef:(WKContextRef)contextRef
 182 {
 183     return [self initWithFrame:frame contextRef:contextRef pageGroupRef:nil];
 184 }
 185
 186 - (void)_registerDraggedTypes
 187 {
 188     NSMutableSet *types = [[NSMutableSet alloc] initWithArray:PasteboardTypes::forEditing()];
 189     [types addObjectsFromArray:PasteboardTypes::forURL()];
 190     [self registerForDraggedTypes:[types allObjects]];
 191     [types release];
 192 }
 193
 194 - (void)_updateRemoteAccessibilityRegistration:(BOOL)registerProcess
 195 {
 196 #if !defined(BUILDING_ON_SNOW_LEOPARD)
 197     // When the tree is connected/disconnected, the remote accessibility registration
 198     // needs to be updated with the pid of the remote process. If the process is going
 199     // away, that information is not present in WebProcess
 200     pid_t pid = 0;
 201     if (registerProcess && _data->_page->process())
 202         pid = _data->_page->process()->processIdentifier();
 203     else if (!registerProcess) {
 204         pid = WKAXRemoteProcessIdentifier(_data->_remoteAccessibilityChild.get());
 205         _data->_remoteAccessibilityChild = nil;
 206     }
 207     if (pid)
 208         WKAXRegisterRemoteProcess(registerProcess, pid);
 209 #endif
 210 }
 211
 212 - (id)initWithFrame:(NSRect)frame contextRef:(WKContextRef)contextRef pageGroupRef:(WKPageGroupRef)pageGroupRef
 213 {
 214     self = [super initWithFrame:frame];
 215     if (!self)
 216         return nil;
 217
 218     [NSApp registerServicesMenuSendTypes:PasteboardTypes::forSelection() returnTypes:PasteboardTypes::forEditing()];
 219
 220     InitWebCoreSystemInterface();
 221     RunLoop::initializeMainRunLoop();
 222
 223     NSTrackingArea *trackingArea = [[NSTrackingArea alloc] initWithRect:frame
 224                                                                 options:(NSTrackingMouseMoved | NSTrackingMouseEnteredAndExited | NSTrackingActiveInKeyWindow | NSTrackingInVisibleRect)
 225                                                                   owner:self
 226                                                                userInfo:nil];
 227     [self addTrackingArea:trackingArea];
 228     [trackingArea release];
 229
 230     _data = [[WKViewData alloc] init];
 231
 232     _data->_pageClient = PageClientImpl::create(self);
 233     _data->_page = toImpl(contextRef)->createWebPage(_data->_pageClient.get(), toImpl(pageGroupRef));
 234     _data->_page->initializeWebPage();
 235 #if ENABLE(FULLSCREEN_API)
 236     _data->_page->fullScreenManager()->setWebView(self);
 237 #endif
 238     _data->_mouseDownEvent = nil;
 239     _data->_ignoringMouseDraggedEvents = NO;
 240
 241     [self _registerDraggedTypes];
 242
 243     WebContext::statistics().wkViewCount++;
 244
 245     return self;
 246 }
 247
 248 - (void)dealloc
 249 {
 250     _data->_page->close();
 251
 252     ASSERT(!_data->_inSecureInputState);
 253
 254     [_data release];
 255     _data = nil;
 256
 257     WebContext::statistics().wkViewCount--;
 258
 259     [super dealloc];
 260 }
 261
 262 - (WKPageRef)pageRef
 263 {
 264     return toAPI(_data->_page.get());
 265 }
 266
 267 - (void)setDrawsBackground:(BOOL)drawsBackground
 268 {
 269     _data->_page->setDrawsBackground(drawsBackground);
 270 }
 271
 272 - (BOOL)drawsBackground
 273 {
 274     return _data->_page->drawsBackground();
 275 }
 276
 277 - (void)setDrawsTransparentBackground:(BOOL)drawsTransparentBackground
 278 {
 279     _data->_page->setDrawsTransparentBackground(drawsTransparentBackground);
 280 }
 281
 282 - (BOOL)drawsTransparentBackground
 283 {
 284     return _data->_page->drawsTransparentBackground();
 285 }
 286
 287 - (BOOL)acceptsFirstResponder
 288 {
 289     return YES;
 290 }
 291
 292 - (BOOL)becomeFirstResponder
 293 {
 294     NSSelectionDirection direction = [[self window] keyViewSelectionDirection];
 295
 296     _data->_inBecomeFirstResponder = true;
 297
 298     [self _updateSecureInputState];
 299     _data->_page->viewStateDidChange(WebPageProxy::ViewIsFocused);
 300
 301     _data->_inBecomeFirstResponder = false;
 302
 303     if (direction != NSDirectSelection)
 304         _data->_page->setInitialFocus(direction == NSSelectingNext);
 305
 306     return YES;
 307 }
 308
 309 - (BOOL)resignFirstResponder
 310 {
 311     _data->_inResignFirstResponder = true;
 312
 313     if (_data->_page->editorState().hasComposition && !_data->_page->editorState().shouldIgnoreCompositionSelectionChange)
 314         _data->_page->confirmCompositionWithoutDisturbingSelection();
 315     [self _resetTextInputState];
 316
 317     if (!_data->_page->maintainsInactiveSelection())
 318         _data->_page->clearSelection();
 319
 320     _data->_page->viewStateDidChange(WebPageProxy::ViewIsFocused);
 321
 322     _data->_inResignFirstResponder = false;
 323
 324     return YES;
 325 }
 326
 327 - (void)viewWillStartLiveResize
 328 {
 329     _data->_page->viewWillStartLiveResize();
 330 }
 331
 332 - (void)viewDidEndLiveResize
 333 {
 334     _data->_page->viewWillEndLiveResize();
 335 }
 336
 337 - (BOOL)isFlipped
 338 {
 339     return YES;
 340 }
 341
 342 - (void)setFrame:(NSRect)rect andScrollBy:(NSSize)offset
 343 {
 344     ASSERT(NSEqualSizes(_data->_resizeScrollOffset, NSZeroSize));
 345
 346     _data->_resizeScrollOffset = offset;
 347     [self setFrame:rect];
 348 }
 349
 350 - (void)setFrameSize:(NSSize)size
 351 {
 352     [super setFrameSize:size];
 353
 354     if (![self frameSizeUpdatesDisabled])
 355         [self _setDrawingAreaSize:size];
 356 }
 357
 358 - (void)_updateWindowAndViewFrames
 359 {
 360     NSWindow *window = [self window];
 361     ASSERT(window);
 362
 363     NSRect windowFrameInScreenCoordinates = [window frame];
 364     NSRect viewFrameInWindowCoordinates = [self convertRect:[self frame] toView:nil];
 365     NSPoint accessibilityPosition = [[self accessibilityAttributeValue:NSAccessibilityPositionAttribute] pointValue];
 366
 367     _data->_page->windowAndViewFramesChanged(enclosingIntRect(windowFrameInScreenCoordinates), enclosingIntRect(viewFrameInWindowCoordinates), IntPoint(accessibilityPosition));
 368 }
 369
 370 - (void)renewGState
 371 {
 372     // Hide the find indicator.
 373     _data->_findIndicatorWindow = nullptr;
 374
 375     // Update the view frame.
 376     if ([self window])
 377         [self _updateWindowAndViewFrames];
 378
 379     [super renewGState];
 380 }
 381
 382 typedef HashMap<SEL, String> SelectorNameMap;
 383
 384 // Map selectors into Editor command names.
 385 // This is not needed for any selectors that have the same name as the Editor command.
 386 static const SelectorNameMap* createSelectorExceptionMap()
 387 {
 388     SelectorNameMap* map = new HashMap<SEL, String>;
 389
 390     map->add(@selector(insertNewlineIgnoringFieldEditor:), "InsertNewline");
 391     map->add(@selector(insertParagraphSeparator:), "InsertNewline");
 392     map->add(@selector(insertTabIgnoringFieldEditor:), "InsertTab");
 393     map->add(@selector(pageDown:), "MovePageDown");
 394     map->add(@selector(pageDownAndModifySelection:), "MovePageDownAndModifySelection");
 395     map->add(@selector(pageUp:), "MovePageUp");
 396     map->add(@selector(pageUpAndModifySelection:), "MovePageUpAndModifySelection");
 397     map->add(@selector(scrollPageDown:), "ScrollPageForward");
 398     map->add(@selector(scrollPageUp:), "ScrollPageBackward");
 399
 400     return map;
 401 }
 402
 403 static String commandNameForSelector(SEL selector)
 404 {
 405     // Check the exception map first.
 406     static const SelectorNameMap* exceptionMap = createSelectorExceptionMap();
 407     SelectorNameMap::const_iterator it = exceptionMap->find(selector);
 408     if (it != exceptionMap->end())
 409         return it->second;
 410
 411     // Remove the trailing colon.
 412     // No need to capitalize the command name since Editor command names are
 413     // not case sensitive.
 414     const char* selectorName = sel_getName(selector);
 415     size_t selectorNameLength = strlen(selectorName);
 416     if (selectorNameLength < 2 || selectorName[selectorNameLength - 1] != ':')
 417         return String();
 418     return String(selectorName, selectorNameLength - 1);
 419 }
 420
 421 // Editing commands
 422
 423 #define WEBCORE_COMMAND(command) - (void)command:(id)sender { _data->_page->executeEditCommand(commandNameForSelector(_cmd)); }
 424
 425 WEBCORE_COMMAND(alignCenter)
 426 WEBCORE_COMMAND(alignJustified)
 427 WEBCORE_COMMAND(alignLeft)
 428 WEBCORE_COMMAND(alignRight)
 429 WEBCORE_COMMAND(copy)
 430 WEBCORE_COMMAND(cut)
 431 WEBCORE_COMMAND(delete)
 432 WEBCORE_COMMAND(deleteBackward)
 433 WEBCORE_COMMAND(deleteBackwardByDecomposingPreviousCharacter)
 434 WEBCORE_COMMAND(deleteForward)
 435 WEBCORE_COMMAND(deleteToBeginningOfLine)
 436 WEBCORE_COMMAND(deleteToBeginningOfParagraph)
 437 WEBCORE_COMMAND(deleteToEndOfLine)
 438 WEBCORE_COMMAND(deleteToEndOfParagraph)
 439 WEBCORE_COMMAND(deleteToMark)
 440 WEBCORE_COMMAND(deleteWordBackward)
 441 WEBCORE_COMMAND(deleteWordForward)
 442 WEBCORE_COMMAND(ignoreSpelling)
 443 WEBCORE_COMMAND(indent)
 444 WEBCORE_COMMAND(insertBacktab)
 445 WEBCORE_COMMAND(insertLineBreak)
 446 WEBCORE_COMMAND(insertNewline)
 447 WEBCORE_COMMAND(insertNewlineIgnoringFieldEditor)
 448 WEBCORE_COMMAND(insertParagraphSeparator)
 449 WEBCORE_COMMAND(insertTab)
 450 WEBCORE_COMMAND(insertTabIgnoringFieldEditor)
 451 WEBCORE_COMMAND(makeTextWritingDirectionLeftToRight)
 452 WEBCORE_COMMAND(makeTextWritingDirectionNatural)
 453 WEBCORE_COMMAND(makeTextWritingDirectionRightToLeft)
 454 WEBCORE_COMMAND(moveBackward)
 455 WEBCORE_COMMAND(moveBackwardAndModifySelection)
 456 WEBCORE_COMMAND(moveDown)
 457 WEBCORE_COMMAND(moveDownAndModifySelection)
 458 WEBCORE_COMMAND(moveForward)
 459 WEBCORE_COMMAND(moveForwardAndModifySelection)
 460 WEBCORE_COMMAND(moveLeft)
 461 WEBCORE_COMMAND(moveLeftAndModifySelection)
 462 WEBCORE_COMMAND(moveParagraphBackwardAndModifySelection)
 463 WEBCORE_COMMAND(moveParagraphForwardAndModifySelection)
 464 WEBCORE_COMMAND(moveRight)
 465 WEBCORE_COMMAND(moveRightAndModifySelection)
 466 WEBCORE_COMMAND(moveToBeginningOfDocument)
 467 WEBCORE_COMMAND(moveToBeginningOfDocumentAndModifySelection)
 468 WEBCORE_COMMAND(moveToBeginningOfLine)
 469 WEBCORE_COMMAND(moveToBeginningOfLineAndModifySelection)
 470 WEBCORE_COMMAND(moveToBeginningOfParagraph)
 471 WEBCORE_COMMAND(moveToBeginningOfParagraphAndModifySelection)
 472 WEBCORE_COMMAND(moveToBeginningOfSentence)
 473 WEBCORE_COMMAND(moveToBeginningOfSentenceAndModifySelection)
 474 WEBCORE_COMMAND(moveToEndOfDocument)
 475 WEBCORE_COMMAND(moveToEndOfDocumentAndModifySelection)
 476 WEBCORE_COMMAND(moveToEndOfLine)
 477 WEBCORE_COMMAND(moveToEndOfLineAndModifySelection)
 478 WEBCORE_COMMAND(moveToEndOfParagraph)
 479 WEBCORE_COMMAND(moveToEndOfParagraphAndModifySelection)
 480 WEBCORE_COMMAND(moveToEndOfSentence)
 481 WEBCORE_COMMAND(moveToEndOfSentenceAndModifySelection)
 482 WEBCORE_COMMAND(moveToLeftEndOfLine)
 483 WEBCORE_COMMAND(moveToLeftEndOfLineAndModifySelection)
 484 WEBCORE_COMMAND(moveToRightEndOfLine)
 485 WEBCORE_COMMAND(moveToRightEndOfLineAndModifySelection)
 486 WEBCORE_COMMAND(moveUp)
 487 WEBCORE_COMMAND(moveUpAndModifySelection)
 488 WEBCORE_COMMAND(moveWordBackward)
 489 WEBCORE_COMMAND(moveWordBackwardAndModifySelection)
 490 WEBCORE_COMMAND(moveWordForward)
 491 WEBCORE_COMMAND(moveWordForwardAndModifySelection)
 492 WEBCORE_COMMAND(moveWordLeft)
 493 WEBCORE_COMMAND(moveWordLeftAndModifySelection)
 494 WEBCORE_COMMAND(moveWordRight)
 495 WEBCORE_COMMAND(moveWordRightAndModifySelection)
 496 WEBCORE_COMMAND(outdent)
 497 WEBCORE_COMMAND(pageDown)
 498 WEBCORE_COMMAND(pageDownAndModifySelection)
 499 WEBCORE_COMMAND(pageUp)
 500 WEBCORE_COMMAND(pageUpAndModifySelection)
 501 WEBCORE_COMMAND(paste)
 502 WEBCORE_COMMAND(pasteAsPlainText)
 503 WEBCORE_COMMAND(scrollPageDown)
 504 WEBCORE_COMMAND(scrollPageUp)
 505 WEBCORE_COMMAND(scrollToBeginningOfDocument)
 506 WEBCORE_COMMAND(scrollToEndOfDocument)
 507 WEBCORE_COMMAND(selectAll)
 508 WEBCORE_COMMAND(selectLine)
 509 WEBCORE_COMMAND(selectParagraph)
 510 WEBCORE_COMMAND(selectSentence)
 511 WEBCORE_COMMAND(selectToMark)
 512 WEBCORE_COMMAND(selectWord)
 513 WEBCORE_COMMAND(setMark)
 514 WEBCORE_COMMAND(subscript)
 515 WEBCORE_COMMAND(superscript)
 516 WEBCORE_COMMAND(swapWithMark)
 517 WEBCORE_COMMAND(takeFindStringFromSelection)
 518 WEBCORE_COMMAND(transpose)
 519 WEBCORE_COMMAND(underline)
 520 WEBCORE_COMMAND(unscript)
 521 WEBCORE_COMMAND(yank)
 522 WEBCORE_COMMAND(yankAndSelect)
 523
 524 #undef WEBCORE_COMMAND
 525
 526 // This method is needed to support Mac OS X services.
 527
 528 - (BOOL)writeSelectionToPasteboard:(NSPasteboard *)pasteboard types:(NSArray *)types
 529 {
 530     Vector<String> pasteboardTypes;
 531     size_t numTypes = [types count];
 532     for (size_t i = 0; i < numTypes; ++i)
 533         pasteboardTypes.append([types objectAtIndex:i]);
 534     return _data->_page->writeSelectionToPasteboard([pasteboard name], pasteboardTypes);
 535 }
 536
 537 // This method is needed to support Mac OS X services.
 538
 539 - (id)validRequestorForSendType:(NSString *)sendType returnType:(NSString *)returnType
 540 {
 541     BOOL isValidSendType = !sendType || ([PasteboardTypes::forSelection() containsObject:sendType] && !_data->_page->editorState().selectionIsNone);
 542     BOOL isValidReturnType = NO;
 543     if (!returnType)
 544         isValidReturnType = YES;
 545     else if ([PasteboardTypes::forEditing() containsObject:returnType] && _data->_page->editorState().isContentEditable) {
 546         // We can insert strings in any editable context.  We can insert other types, like images, only in rich edit contexts.
 547         isValidReturnType = _data->_page->editorState().isContentRichlyEditable || [returnType isEqualToString:NSStringPboardType];
 548     }
 549     if (isValidSendType && isValidReturnType)
 550         return self;
 551     return [[self nextResponder] validRequestorForSendType:sendType returnType:returnType];
 552 }
 553
 554 // This method is needed to support Mac OS X services.
 555
 556 - (BOOL)readSelectionFromPasteboard:(NSPasteboard *)pasteboard
 557 {
 558     return _data->_page->readSelectionFromPasteboard([pasteboard name]);
 559 }
 560
 561 /*
 562
 563 When possible, editing-related methods should be implemented in WebCore with the
 564 EditorCommand mechanism and invoked via WEBCORE_COMMAND, rather than implementing
 565 individual methods here with Mac-specific code.
 566
 567 Editing-related methods still unimplemented that are implemented in WebKit1:
 568
 569 - (void)capitalizeWord:(id)sender;
 570 - (void)centerSelectionInVisibleArea:(id)sender;
 571 - (void)changeFont:(id)sender;
 572 - (void)complete:(id)sender;
 573 - (void)copyFont:(id)sender;
 574 - (void)lowercaseWord:(id)sender;
 575 - (void)makeBaseWritingDirectionLeftToRight:(id)sender;
 576 - (void)makeBaseWritingDirectionNatural:(id)sender;
 577 - (void)makeBaseWritingDirectionRightToLeft:(id)sender;
 578 - (void)pasteFont:(id)sender;
 579 - (void)scrollLineDown:(id)sender;
 580 - (void)scrollLineUp:(id)sender;
 581 - (void)showGuessPanel:(id)sender;
 582 - (void)uppercaseWord:(id)sender;
 583
 584 Some other editing-related methods still unimplemented:
 585
 586 - (void)changeCaseOfLetter:(id)sender;
 587 - (void)copyRuler:(id)sender;
 588 - (void)insertContainerBreak:(id)sender;
 589 - (void)insertDoubleQuoteIgnoringSubstitution:(id)sender;
 590 - (void)insertSingleQuoteIgnoringSubstitution:(id)sender;
 591 - (void)pasteRuler:(id)sender;
 592 - (void)toggleRuler:(id)sender;
 593 - (void)transposeWords:(id)sender;
 594
 595 */
 596
 597 // Menu items validation
 598
 599 static NSMenuItem *menuItem(id <NSValidatedUserInterfaceItem> item)
 600 {
 601     if (![(NSObject *)item isKindOfClass:[NSMenuItem class]])
 602         return nil;
 603     return (NSMenuItem *)item;
 604 }
 605
 606 static NSToolbarItem *toolbarItem(id <NSValidatedUserInterfaceItem> item)
 607 {
 608     if (![(NSObject *)item isKindOfClass:[NSToolbarItem class]])
 609         return nil;
 610     return (NSToolbarItem *)item;
 611 }
 612
 613 static void validateCommandCallback(WKStringRef commandName, bool isEnabled, int32_t state, WKErrorRef error, void* context)
 614 {
 615     // If the process exits before the command can be validated, we'll be called back with an error.
 616     if (error)
 617         return;
 618
 619     WKView* wkView = static_cast<WKView*>(context);
 620     ASSERT(wkView);
 621
 622     [wkView _setUserInterfaceItemState:nsStringFromWebCoreString(toImpl(commandName)->string()) enabled:isEnabled state:state];
 623 }
 624
 625 - (BOOL)validateUserInterfaceItem:(id <NSValidatedUserInterfaceItem>)item
 626 {
 627     SEL action = [item action];
 628
 629     if (action == @selector(showGuessPanel:)) {
 630         if (NSMenuItem *menuItem = ::menuItem(item))
 631             [menuItem setTitle:contextMenuItemTagShowSpellingPanel(![[[NSSpellChecker sharedSpellChecker] spellingPanel] isVisible])];
 632         return _data->_page->editorState().isContentEditable;
 633     }
 634
 635     if (action == @selector(checkSpelling:) || action == @selector(changeSpelling:))
 636         return _data->_page->editorState().isContentEditable;
 637
 638     if (action == @selector(toggleContinuousSpellChecking:)) {
 639         bool enabled = TextChecker::isContinuousSpellCheckingAllowed();
 640         bool checked = enabled && TextChecker::state().isContinuousSpellCheckingEnabled;
 641         [menuItem(item) setState:checked ? NSOnState : NSOffState];
 642         return enabled;
 643     }
 644
 645     if (action == @selector(toggleGrammarChecking:)) {
 646         bool checked = TextChecker::state().isGrammarCheckingEnabled;
 647         [menuItem(item) setState:checked ? NSOnState : NSOffState];
 648         return YES;
 649     }
 650
 651     if (action == @selector(toggleAutomaticSpellingCorrection:)) {
 652         bool checked = TextChecker::state().isAutomaticSpellingCorrectionEnabled;
 653         [menuItem(item) setState:checked ? NSOnState : NSOffState];
 654         return _data->_page->editorState().isContentEditable;
 655     }
 656
 657     if (action == @selector(orderFrontSubstitutionsPanel:)) {
 658         if (NSMenuItem *menuItem = ::menuItem(item))
 659             [menuItem setTitle:contextMenuItemTagShowSubstitutions(![[[NSSpellChecker sharedSpellChecker] substitutionsPanel] isVisible])];
 660         return _data->_page->editorState().isContentEditable;
 661     }
 662
 663     if (action == @selector(toggleSmartInsertDelete:)) {
 664         bool checked = _data->_page->isSmartInsertDeleteEnabled();
 665         [menuItem(item) setState:checked ? NSOnState : NSOffState];
 666         return _data->_page->editorState().isContentEditable;
 667     }
 668
 669     if (action == @selector(toggleAutomaticQuoteSubstitution:)) {
 670         bool checked = TextChecker::state().isAutomaticQuoteSubstitutionEnabled;
 671         [menuItem(item) setState:checked ? NSOnState : NSOffState];
 672         return _data->_page->editorState().isContentEditable;
 673     }
 674
 675     if (action == @selector(toggleAutomaticDashSubstitution:)) {
 676         bool checked = TextChecker::state().isAutomaticDashSubstitutionEnabled;
 677         [menuItem(item) setState:checked ? NSOnState : NSOffState];
 678         return _data->_page->editorState().isContentEditable;
 679     }
 680
 681     if (action == @selector(toggleAutomaticLinkDetection:)) {
 682         bool checked = TextChecker::state().isAutomaticLinkDetectionEnabled;
 683         [menuItem(item) setState:checked ? NSOnState : NSOffState];
 684         return _data->_page->editorState().isContentEditable;
 685     }
 686
 687     if (action == @selector(toggleAutomaticTextReplacement:)) {
 688         bool checked = TextChecker::state().isAutomaticTextReplacementEnabled;
 689         [menuItem(item) setState:checked ? NSOnState : NSOffState];
 690         return _data->_page->editorState().isContentEditable;
 691     }
 692
 693     if (action == @selector(uppercaseWord:) || action == @selector(lowercaseWord:) || action == @selector(capitalizeWord:))
 694         return _data->_page->editorState().selectionIsRange && _data->_page->editorState().isContentEditable;
 695
 696     if (action == @selector(stopSpeaking:))
 697         return [NSApp isSpeaking];
 698
 699     // Next, handle editor commands. Start by returning YES for anything that is not an editor command.
 700     // Returning YES is the default thing to do in an AppKit validate method for any selector that is not recognized.
 701     String commandName = commandNameForSelector([item action]);
 702     if (!Editor::commandIsSupportedFromMenuOrKeyBinding(commandName))
 703         return YES;
 704
 705     // Add this item to the vector of items for a given command that are awaiting validation.
 706     pair<ValidationMap::iterator, bool> addResult = _data->_validationMap.add(commandName, ValidationVector());
 707     addResult.first->second.append(item);
 708     if (addResult.second) {
 709         // If we are not already awaiting validation for this command, start the asynchronous validation process.
 710         // FIXME: Theoretically, there is a race here; when we get the answer it might be old, from a previous time
 711         // we asked for the same command; there is no guarantee the answer is still valid.
 712         _data->_page->validateCommand(commandName, ValidateCommandCallback::create(self, validateCommandCallback));
 713     }
 714
 715     // Treat as enabled until we get the result back from the web process and _setUserInterfaceItemState is called.
 716     // FIXME <rdar://problem/8803459>: This means disabled items will flash enabled at first for a moment.
 717     // But returning NO here would be worse; that would make keyboard commands such as command-C fail.
 718     return YES;
 719 }
 720
 721 static void speakString(WKStringRef string, WKErrorRef error, void*)
 722 {
 723     if (error)
 724         return;
 725     if (!string)
 726         return;
 727
 728     NSString *convertedString = toImpl(string)->string();
 729     [NSApp speakString:convertedString];
 730 }
 731
 732 - (IBAction)startSpeaking:(id)sender
 733 {
 734     _data->_page->getSelectionOrContentsAsString(StringCallback::create(0, speakString));
 735 }
 736
 737 - (IBAction)stopSpeaking:(id)sender
 738 {
 739     [NSApp stopSpeaking:sender];
 740 }
 741
 742 - (IBAction)showGuessPanel:(id)sender
 743 {
 744     NSSpellChecker *checker = [NSSpellChecker sharedSpellChecker];
 745     if (!checker) {
 746         LOG_ERROR("No NSSpellChecker");
 747         return;
 748     }
 749
 750     NSPanel *spellingPanel = [checker spellingPanel];
 751     if ([spellingPanel isVisible]) {
 752         [spellingPanel orderOut:sender];
 753         return;
 754     }
 755
 756     _data->_page->advanceToNextMisspelling(true);
 757     [spellingPanel orderFront:sender];
 758 }
 759
 760 - (IBAction)checkSpelling:(id)sender
 761 {
 762     _data->_page->advanceToNextMisspelling(false);
 763 }
 764
 765 - (void)changeSpelling:(id)sender
 766 {
 767     NSString *word = [[sender selectedCell] stringValue];
 768
 769     _data->_page->changeSpellingToWord(word);
 770 }
 771
 772 - (IBAction)toggleContinuousSpellChecking:(id)sender
 773 {
 774     bool spellCheckingEnabled = !TextChecker::state().isContinuousSpellCheckingEnabled;
 775     TextChecker::setContinuousSpellCheckingEnabled(spellCheckingEnabled);
 776
 777     _data->_page->process()->updateTextCheckerState();
 778 }
 779
 780 - (BOOL)isGrammarCheckingEnabled
 781 {
 782     return TextChecker::state().isGrammarCheckingEnabled;
 783 }
 784
 785 - (void)setGrammarCheckingEnabled:(BOOL)flag
 786 {
 787     if (static_cast<bool>(flag) == TextChecker::state().isGrammarCheckingEnabled)
 788         return;
 789
 790     TextChecker::setGrammarCheckingEnabled(flag);
 791     _data->_page->process()->updateTextCheckerState();
 792 }
 793
 794 - (IBAction)toggleGrammarChecking:(id)sender
 795 {
 796     bool grammarCheckingEnabled = !TextChecker::state().isGrammarCheckingEnabled;
 797     TextChecker::setGrammarCheckingEnabled(grammarCheckingEnabled);
 798
 799     _data->_page->process()->updateTextCheckerState();
 800 }
 801
 802 - (IBAction)toggleAutomaticSpellingCorrection:(id)sender
 803 {
 804     TextChecker::setAutomaticSpellingCorrectionEnabled(!TextChecker::state().isAutomaticSpellingCorrectionEnabled);
 805
 806     _data->_page->process()->updateTextCheckerState();
 807 }
 808
 809 - (void)orderFrontSubstitutionsPanel:(id)sender
 810 {
 811     NSSpellChecker *checker = [NSSpellChecker sharedSpellChecker];
 812     if (!checker) {
 813         LOG_ERROR("No NSSpellChecker");
 814         return;
 815     }
 816
 817     NSPanel *substitutionsPanel = [checker substitutionsPanel];
 818     if ([substitutionsPanel isVisible]) {
 819         [substitutionsPanel orderOut:sender];
 820         return;
 821     }
 822     [substitutionsPanel orderFront:sender];
 823 }
 824
 825 - (IBAction)toggleSmartInsertDelete:(id)sender
 826 {
 827     _data->_page->setSmartInsertDeleteEnabled(!_data->_page->isSmartInsertDeleteEnabled());
 828 }
 829
 830 - (BOOL)isAutomaticQuoteSubstitutionEnabled
 831 {
 832     return TextChecker::state().isAutomaticQuoteSubstitutionEnabled;
 833 }
 834
 835 - (void)setAutomaticQuoteSubstitutionEnabled:(BOOL)flag
 836 {
 837     if (static_cast<bool>(flag) == TextChecker::state().isAutomaticQuoteSubstitutionEnabled)
 838         return;
 839
 840     TextChecker::setAutomaticQuoteSubstitutionEnabled(flag);
 841     _data->_page->process()->updateTextCheckerState();
 842 }
 843
 844 - (void)toggleAutomaticQuoteSubstitution:(id)sender
 845 {
 846     TextChecker::setAutomaticQuoteSubstitutionEnabled(!TextChecker::state().isAutomaticQuoteSubstitutionEnabled);
 847     _data->_page->process()->updateTextCheckerState();
 848 }
 849
 850 - (BOOL)isAutomaticDashSubstitutionEnabled
 851 {
 852     return TextChecker::state().isAutomaticDashSubstitutionEnabled;
 853 }
 854
 855 - (void)setAutomaticDashSubstitutionEnabled:(BOOL)flag
 856 {
 857     if (static_cast<bool>(flag) == TextChecker::state().isAutomaticDashSubstitutionEnabled)
 858         return;
 859
 860     TextChecker::setAutomaticDashSubstitutionEnabled(flag);
 861     _data->_page->process()->updateTextCheckerState();
 862 }
 863
 864 - (void)toggleAutomaticDashSubstitution:(id)sender
 865 {
 866     TextChecker::setAutomaticDashSubstitutionEnabled(!TextChecker::state().isAutomaticDashSubstitutionEnabled);
 867     _data->_page->process()->updateTextCheckerState();
 868 }
 869
 870 - (BOOL)isAutomaticLinkDetectionEnabled
 871 {
 872     return TextChecker::state().isAutomaticLinkDetectionEnabled;
 873 }
 874
 875 - (void)setAutomaticLinkDetectionEnabled:(BOOL)flag
 876 {
 877     if (static_cast<bool>(flag) == TextChecker::state().isAutomaticLinkDetectionEnabled)
 878         return;
 879
 880     TextChecker::setAutomaticLinkDetectionEnabled(flag);
 881     _data->_page->process()->updateTextCheckerState();
 882 }
 883
 884 - (void)toggleAutomaticLinkDetection:(id)sender
 885 {
 886     TextChecker::setAutomaticLinkDetectionEnabled(!TextChecker::state().isAutomaticLinkDetectionEnabled);
 887     _data->_page->process()->updateTextCheckerState();
 888 }
 889
 890 - (BOOL)isAutomaticTextReplacementEnabled
 891 {
 892     return TextChecker::state().isAutomaticTextReplacementEnabled;
 893 }
 894
 895 - (void)setAutomaticTextReplacementEnabled:(BOOL)flag
 896 {
 897     if (static_cast<bool>(flag) == TextChecker::state().isAutomaticTextReplacementEnabled)
 898         return;
 899
 900     TextChecker::setAutomaticTextReplacementEnabled(flag);
 901     _data->_page->process()->updateTextCheckerState();
 902 }
 903
 904 - (void)toggleAutomaticTextReplacement:(id)sender
 905 {
 906     TextChecker::setAutomaticTextReplacementEnabled(!TextChecker::state().isAutomaticTextReplacementEnabled);
 907     _data->_page->process()->updateTextCheckerState();
 908 }
 909
 910 - (void)uppercaseWord:(id)sender
 911 {
 912     _data->_page->uppercaseWord();
 913 }
 914
 915 - (void)lowercaseWord:(id)sender
 916 {
 917     _data->_page->lowercaseWord();
 918 }
 919
 920 - (void)capitalizeWord:(id)sender
 921 {
 922     _data->_page->capitalizeWord();
 923 }
 924
 925 // Events
 926
 927 // Override this so that AppKit will send us arrow keys as key down events so we can
 928 // support them via the key bindings mechanism.
 929 - (BOOL)_wantsKeyDownForEvent:(NSEvent *)event
 930 {
 931     return YES;
 932 }
 933
 934 - (void)_setMouseDownEvent:(NSEvent *)event
 935 {
 936     ASSERT(!event || [event type] == NSLeftMouseDown || [event type] == NSRightMouseDown || [event type] == NSOtherMouseDown);
 937
 938     if (event == _data->_mouseDownEvent)
 939         return;
 940
 941     [_data->_mouseDownEvent release];
 942     _data->_mouseDownEvent = [event retain];
 943 }
 944
 945 #define NATIVE_MOUSE_EVENT_HANDLER(Selector) \
 946     - (void)Selector:(NSEvent *)theEvent \
 947     { \
 948         if ([[self inputContext] handleEvent:theEvent]) { \
 949             LOG(TextInput, "%s was handled by text input context", String(#Selector).substring(0, String(#Selector).find("Internal")).ascii().data()); \
 950             return; \
 951         } \
 952         NativeWebMouseEvent webEvent(theEvent, self); \
 953         _data->_page->handleMouseEvent(webEvent); \
 954     }
 955
 956 NATIVE_MOUSE_EVENT_HANDLER(mouseEntered)
 957 NATIVE_MOUSE_EVENT_HANDLER(mouseExited)
 958 NATIVE_MOUSE_EVENT_HANDLER(mouseMovedInternal)
 959 NATIVE_MOUSE_EVENT_HANDLER(mouseDownInternal)
 960 NATIVE_MOUSE_EVENT_HANDLER(mouseUpInternal)
 961 NATIVE_MOUSE_EVENT_HANDLER(mouseDraggedInternal)
 962 NATIVE_MOUSE_EVENT_HANDLER(otherMouseDown)
 963 NATIVE_MOUSE_EVENT_HANDLER(otherMouseDragged)
 964 NATIVE_MOUSE_EVENT_HANDLER(otherMouseMoved)
 965 NATIVE_MOUSE_EVENT_HANDLER(otherMouseUp)
 966 NATIVE_MOUSE_EVENT_HANDLER(rightMouseDown)
 967 NATIVE_MOUSE_EVENT_HANDLER(rightMouseDragged)
 968 NATIVE_MOUSE_EVENT_HANDLER(rightMouseUp)
 969
 970 #undef NATIVE_MOUSE_EVENT_HANDLER
 971
 972 #define EVENT_HANDLER(Selector, Type) \
 973     - (void)Selector:(NSEvent *)theEvent \
 974     { \
 975         Web##Type##Event webEvent = WebEventFactory::createWeb##Type##Event(theEvent, self); \
 976         _data->_page->handle##Type##Event(webEvent); \
 977     }
 978
 979 EVENT_HANDLER(scrollWheel, Wheel)
 980
 981 #undef EVENT_HANDLER
 982
 983 - (void)mouseMoved:(NSEvent *)event
 984 {
 985     // When a view is first responder, it gets mouse moved events even when the mouse is outside its visible rect.
 986     if (self == [[self window] firstResponder] && !NSPointInRect([self convertPoint:[event locationInWindow] fromView:nil], [self visibleRect]))
 987         return;
 988
 989     [self mouseMovedInternal:event];
 990 }
 991
 992 - (void)mouseDown:(NSEvent *)event
 993 {
 994     [self _setMouseDownEvent:event];
 995     _data->_ignoringMouseDraggedEvents = NO;
 996     _data->_dragHasStarted = NO;
 997     [self mouseDownInternal:event];
 998 }
 999
1000 - (void)mouseUp:(NSEvent *)event
1001 {
1002     [self _setMouseDownEvent:nil];
1003     [self mouseUpInternal:event];
1004 }
1005
1006 - (void)mouseDragged:(NSEvent *)event
1007 {
1008     if (_data->_ignoringMouseDraggedEvents)
1009         return;
1010     [self mouseDraggedInternal:event];
1011 }
1012
1013 - (BOOL)acceptsFirstMouse:(NSEvent *)event
1014 {
1015     // There's a chance that responding to this event will run a nested event loop, and
1016     // fetching a new event might release the old one. Retaining and then autoreleasing
1017     // the current event prevents that from causing a problem inside WebKit or AppKit code.
1018     [[event retain] autorelease];
1019
1020     if (![self hitTest:[event locationInWindow]])
1021         return NO;
1022
1023     [self _setMouseDownEvent:event];
1024     bool result = _data->_page->acceptsFirstMouse([event eventNumber], WebEventFactory::createWebMouseEvent(event, self));
1025     [self _setMouseDownEvent:nil];
1026     return result;
1027 }
1028
1029 - (BOOL)shouldDelayWindowOrderingForEvent:(NSEvent *)event
1030 {
1031     // If this is the active window or we don't have a range selection, there is no need to perform additional checks
1032     // and we can avoid making a synchronous call to the WebProcess.
1033     if ([[self window] isKeyWindow] || _data->_page->editorState().selectionIsNone || !_data->_page->editorState().selectionIsRange)
1034         return NO;
1035
1036     // There's a chance that responding to this event will run a nested event loop, and
1037     // fetching a new event might release the old one. Retaining and then autoreleasing
1038     // the current event prevents that from causing a problem inside WebKit or AppKit code.
1039     [[event retain] autorelease];
1040
1041     if (![self hitTest:[event locationInWindow]])
1042         return NO;
1043
1044     [self _setMouseDownEvent:event];
1045     bool result = _data->_page->shouldDelayWindowOrderingForEvent(WebEventFactory::createWebMouseEvent(event, self));
1046     [self _setMouseDownEvent:nil];
1047     return result;
1048 }
1049
1050 #if ENABLE(GESTURE_EVENTS)
1051
1052 static const short kIOHIDEventTypeScroll = 6;
1053
1054 - (void)shortCircuitedEndGestureWithEvent:(NSEvent *)event
1055 {
1056     if ([event subtype] != kIOHIDEventTypeScroll)
1057         return;
1058
1059     WebGestureEvent webEvent = WebEventFactory::createWebGestureEvent(event, self);
1060     _data->_page->handleGestureEvent(webEvent);
1061
1062     if (_data->_endGestureMonitor) {
1063         [NSEvent removeMonitor:_data->_endGestureMonitor];
1064         _data->_endGestureMonitor = nil;
1065     }
1066 }
1067
1068 - (void)beginGestureWithEvent:(NSEvent *)event
1069 {
1070     if ([event subtype] != kIOHIDEventTypeScroll)
1071         return;
1072
1073     WebGestureEvent webEvent = WebEventFactory::createWebGestureEvent(event, self);
1074     _data->_page->handleGestureEvent(webEvent);
1075
1076     if (!_data->_endGestureMonitor) {
1077         _data->_endGestureMonitor = [NSEvent addLocalMonitorForEventsMatchingMask:NSEventMaskEndGesture handler:^(NSEvent *blockEvent) {
1078             [self shortCircuitedEndGestureWithEvent:blockEvent];
1079             return blockEvent;
1080         }];
1081     }
1082 }
1083 #endif
1084
1085 - (void)doCommandBySelector:(SEL)selector
1086 {
1087     LOG(TextInput, "doCommandBySelector:\"%s\"", sel_getName(selector));
1088
1089     WKViewInterpretKeyEventsParameters* parameters = _data->_interpretKeyEventsParameters;
1090     if (parameters)
1091         parameters->consumedByIM = false;
1092
1093     // As in insertText:replacementRange:, we assume that the call comes from an input method if there is marked text.
1094     bool isFromInputMethod = _data->_page->editorState().hasComposition;
1095
1096     if (parameters && !isFromInputMethod)
1097         parameters->commands->append(KeypressCommand(NSStringFromSelector(selector)));
1098     else {
1099         // FIXME: Send the command to Editor synchronously and only send it along the
1100         // responder chain if it's a selector that does not correspond to an editing command.
1101         [super doCommandBySelector:selector];
1102     }
1103 }
1104
1105 - (void)insertText:(id)string
1106 {
1107     // Unlike and NSTextInputClient variant with replacementRange, this NSResponder method is called when there is no input context,
1108     // so text input processing isn't performed. We are not going to actually insert any text in that case, but saving an insertText
1109     // command ensures that a keypress event is dispatched as appropriate.
1110     [self insertText:string replacementRange:NSMakeRange(NSNotFound, 0)];
1111 }
1112
1113 - (void)insertText:(id)string replacementRange:(NSRange)replacementRange
1114 {
1115     BOOL isAttributedString = [string isKindOfClass:[NSAttributedString class]];
1116     ASSERT(isAttributedString || [string isKindOfClass:[NSString class]]);
1117
1118     if (replacementRange.location != NSNotFound)
1119         LOG(TextInput, "insertText:\"%@\" replacementRange:(%u, %u)", isAttributedString ? [string string] : string, replacementRange.location, replacementRange.length);
1120     else
1121         LOG(TextInput, "insertText:\"%@\"", isAttributedString ? [string string] : string);
1122     WKViewInterpretKeyEventsParameters* parameters = _data->_interpretKeyEventsParameters;
1123     if (parameters)
1124         parameters->consumedByIM = false;
1125
1126     NSString *text;
1127     bool isFromInputMethod = _data->_page->editorState().hasComposition;
1128
1129     if (isAttributedString) {
1130         // FIXME: We ignore most attributes from the string, so for example inserting from Character Palette loses font and glyph variation data.
1131         text = [string string];
1132     } else
1133         text = string;
1134
1135     // insertText can be called for several reasons:
1136     // - If it's from normal key event processing (including key bindings), we may need to save the action to perform it later.
1137     // - If it's from an input method, then we should go ahead and insert the text now. We assume it's from the input method if we have marked text.
1138     // FIXME: In theory, this could be wrong for some input methods, so we should try to find another way to determine if the call is from the input method.
1139     // - If it's sent outside of keyboard event processing (e.g. from Character Viewer, or when confirming an inline input area with a mouse),
1140     // then we also execute it immediately, as there will be no other chance.
1141     if (parameters && !isFromInputMethod) {
1142         ASSERT(replacementRange.location == NSNotFound);
1143         parameters->commands->append(KeypressCommand("insertText:", text));
1144         return;
1145     }
1146
1147     String eventText = text;
1148     eventText.replace(NSBackTabCharacter, NSTabCharacter); // same thing is done in KeyEventMac.mm in WebCore
1149     bool eventHandled = _data->_page->insertText(eventText, replacementRange.location, NSMaxRange(replacementRange));
1150
1151     if (parameters)
1152         parameters->eventInterpretationHadSideEffects |= eventHandled;
1153 }
1154
1155 - (BOOL)_handleStyleKeyEquivalent:(NSEvent *)event
1156 {
1157     if (!_data->_page->editorState().isContentEditable)
1158         return NO;
1159
1160     if (([event modifierFlags] & NSDeviceIndependentModifierFlagsMask) != NSCommandKeyMask)
1161         return NO;
1162
1163     // Here we special case cmd+b and cmd+i but not cmd+u, for historic reason.
1164     // This should not be changed, since it could break some Mac applications that
1165     // rely on this inherent behavior.
1166     // See https://bugs.webkit.org/show_bug.cgi?id=24943
1167
1168     NSString *string = [event characters];
1169     if ([string caseInsensitiveCompare:@"b"] == NSOrderedSame) {
1170         _data->_page->executeEditCommand("ToggleBold");
1171         return YES;
1172     }
1173     if ([string caseInsensitiveCompare:@"i"] == NSOrderedSame) {
1174         _data->_page->executeEditCommand("ToggleItalic");
1175         return YES;
1176     }
1177
1178     return NO;
1179 }
1180
1181 - (BOOL)performKeyEquivalent:(NSEvent *)event
1182 {
1183     // There's a chance that responding to this event will run a nested event loop, and
1184     // fetching a new event might release the old one. Retaining and then autoreleasing
1185     // the current event prevents that from causing a problem inside WebKit or AppKit code.
1186     [[event retain] autorelease];
1187
1188     BOOL eventWasSentToWebCore = (_data->_keyDownEventBeingResent == event);
1189
1190     // Pass key combos through WebCore if there is a key binding available for
1191     // this event. This lets web pages have a crack at intercepting key-modified keypresses.
1192     // But don't do it if we have already handled the event.
1193     // Pressing Esc results in a fake event being sent - don't pass it to WebCore.
1194     if (!eventWasSentToWebCore && event == [NSApp currentEvent] && self == [[self window] firstResponder]) {
1195         _data->_page->handleKeyboardEvent(NativeWebKeyboardEvent(event, self));
1196         return YES;
1197     }
1198
1199     return [self _handleStyleKeyEquivalent:event] || [super performKeyEquivalent:event];
1200 }
1201
1202 - (void)keyUp:(NSEvent *)theEvent
1203 {
1204     _data->_page->handleKeyboardEvent(NativeWebKeyboardEvent(theEvent, self));
1205 }
1206
1207 - (void)keyDown:(NSEvent *)theEvent
1208 {
1209     // There's a chance that responding to this event will run a nested event loop, and
1210     // fetching a new event might release the old one. Retaining and then autoreleasing
1211     // the current event prevents that from causing a problem inside WebKit or AppKit code.
1212     [[theEvent retain] autorelease];
1213
1214     if (_data->_pluginComplexTextInputIdentifier) {
1215         // Try feeding the keyboard event directly to the plug-in.
1216         NSString *string = nil;
1217         if ([[WKTextInputWindowController sharedTextInputWindowController] interpretKeyEvent:theEvent string:&string]) {
1218             if (string)
1219                 _data->_page->sendComplexTextInputToPlugin(_data->_pluginComplexTextInputIdentifier, string);
1220             return;
1221         }
1222     }
1223
1224     // We could be receiving a key down from AppKit if we have re-sent an event
1225     // that maps to an action that is currently unavailable (for example a copy when
1226     // there is no range selection).
1227     // If this is the case we should ignore the key down.
1228     if (_data->_keyDownEventBeingResent == theEvent) {
1229         [super keyDown:theEvent];
1230         return;
1231     }
1232     _data->_page->handleKeyboardEvent(NativeWebKeyboardEvent(theEvent, self));
1233 }
1234
1235 - (void)flagsChanged:(NSEvent *)theEvent
1236 {
1237     // There's a chance that responding to this event will run a nested event loop, and
1238     // fetching a new event might release the old one. Retaining and then autoreleasing
1239     // the current event prevents that from causing a problem inside WebKit or AppKit code.
1240     [[theEvent retain] autorelease];
1241
1242     unsigned short keyCode = [theEvent keyCode];
1243
1244     // Don't make an event from the num lock and function keys
1245     if (!keyCode || keyCode == 10 || keyCode == 63)
1246         return;
1247
1248     _data->_page->handleKeyboardEvent(NativeWebKeyboardEvent(theEvent, self));
1249 }
1250
1251 - (void)_executeSavedKeypressCommands
1252 {
1253     WKViewInterpretKeyEventsParameters* parameters = _data->_interpretKeyEventsParameters;
1254     if (!parameters || parameters->commands->isEmpty())
1255         return;
1256
1257     // We could be called again if the execution of one command triggers a call to selectedRange.
1258     // In this case, the state is up to date, and we don't need to execute any more saved commands to return a result.
1259     if (parameters->executingSavedKeypressCommands)
1260         return;
1261
1262     parameters->executingSavedKeypressCommands = true;
1263     parameters->eventInterpretationHadSideEffects |= _data->_page->executeKeypressCommands(*parameters->commands);
1264     parameters->commands->clear();
1265     parameters->executingSavedKeypressCommands = false;
1266 }
1267
1268 - (NSTextInputContext *)inputContext
1269 {
1270     WKViewInterpretKeyEventsParameters* parameters = _data->_interpretKeyEventsParameters;
1271
1272     if (_data->_pluginComplexTextInputIdentifier && !parameters)
1273         return [[WKTextInputWindowController sharedTextInputWindowController] inputContext];
1274
1275     // Disable text input machinery when in non-editable content. An invisible inline input area affects performance, and can prevent Expose from working.
1276     if (!_data->_page->editorState().isContentEditable)
1277         return nil;
1278
1279     return [super inputContext];
1280 }
1281
1282 - (NSRange)selectedRange
1283 {
1284     [self _executeSavedKeypressCommands];
1285
1286     uint64_t selectionStart;
1287     uint64_t selectionLength;
1288     _data->_page->getSelectedRange(selectionStart, selectionLength);
1289
1290     NSRange result = NSMakeRange(selectionStart, selectionLength);
1291     if (result.location == NSNotFound)
1292         LOG(TextInput, "selectedRange -> (NSNotFound, %u)", result.length);
1293     else
1294         LOG(TextInput, "selectedRange -> (%u, %u)", result.location, result.length);
1295
1296     return result;
1297 }
1298
1299 - (BOOL)hasMarkedText
1300 {
1301     WKViewInterpretKeyEventsParameters* parameters = _data->_interpretKeyEventsParameters;
1302
1303     BOOL result;
1304     if (parameters) {
1305         result = _data->_page->editorState().hasComposition;
1306         if (result) {
1307             // A saved command can confirm a composition, but it cannot start a new one.
1308             [self _executeSavedKeypressCommands];
1309             result = _data->_page->editorState().hasComposition;
1310         }
1311     } else {
1312         uint64_t location;
1313         uint64_t length;
1314         _data->_page->getMarkedRange(location, length);
1315         result = location != NSNotFound;
1316     }
1317
1318     LOG(TextInput, "hasMarkedText -> %u", result);
1319     return result;
1320 }
1321
1322 - (void)unmarkText
1323 {
1324     [self _executeSavedKeypressCommands];
1325
1326     LOG(TextInput, "unmarkText");
1327
1328     // Use pointer to get parameters passed to us by the caller of interpretKeyEvents.
1329     WKViewInterpretKeyEventsParameters* parameters = _data->_interpretKeyEventsParameters;
1330
1331     if (parameters) {
1332         parameters->eventInterpretationHadSideEffects = true;
1333         parameters->consumedByIM = false;
1334     }
1335
1336     _data->_page->confirmComposition();
1337 }
1338
1339 - (NSArray *)validAttributesForMarkedText
1340 {
1341     static NSArray *validAttributes;
1342     if (!validAttributes) {
1343         validAttributes = [[NSArray alloc] initWithObjects:
1344                            NSUnderlineStyleAttributeName, NSUnderlineColorAttributeName,
1345                            NSMarkedClauseSegmentAttributeName, nil];
1346         // NSText also supports the following attributes, but it's
1347         // hard to tell which are really required for text input to
1348         // work well; I have not seen any input method make use of them yet.
1349         //     NSFontAttributeName, NSForegroundColorAttributeName,
1350         //     NSBackgroundColorAttributeName, NSLanguageAttributeName.
1351         CFRetain(validAttributes);
1352     }
1353     LOG(TextInput, "validAttributesForMarkedText -> (...)");
1354     return validAttributes;
1355 }
1356
1357 static void extractUnderlines(NSAttributedString *string, Vector<CompositionUnderline>& result)
1358 {
1359     int length = [[string string] length];
1360
1361     int i = 0;
1362     while (i < length) {
1363         NSRange range;
1364         NSDictionary *attrs = [string attributesAtIndex:i longestEffectiveRange:&range inRange:NSMakeRange(i, length - i)];
1365
1366         if (NSNumber *style = [attrs objectForKey:NSUnderlineStyleAttributeName]) {
1367             Color color = Color::black;
1368             if (NSColor *colorAttr = [attrs objectForKey:NSUnderlineColorAttributeName])
1369                 color = colorFromNSColor([colorAttr colorUsingColorSpaceName:NSDeviceRGBColorSpace]);
1370             result.append(CompositionUnderline(range.location, NSMaxRange(range), color, [style intValue] > 1));
1371         }
1372
1373         i = range.location + range.length;
1374     }
1375 }
1376
1377 - (void)setMarkedText:(id)string selectedRange:(NSRange)newSelRange replacementRange:(NSRange)replacementRange
1378 {
1379     [self _executeSavedKeypressCommands];
1380
1381     BOOL isAttributedString = [string isKindOfClass:[NSAttributedString class]];
1382     ASSERT(isAttributedString || [string isKindOfClass:[NSString class]]);
1383
1384     LOG(TextInput, "setMarkedText:\"%@\" selectedRange:(%u, %u)", isAttributedString ? [string string] : string, newSelRange.location, newSelRange.length);
1385
1386     // Use pointer to get parameters passed to us by the caller of interpretKeyEvents.
1387     WKViewInterpretKeyEventsParameters* parameters = _data->_interpretKeyEventsParameters;
1388
1389     if (parameters) {
1390         parameters->eventInterpretationHadSideEffects = true;
1391         parameters->consumedByIM = false;
1392     }
1393
1394     Vector<CompositionUnderline> underlines;
1395     NSString *text;
1396
1397     if (isAttributedString) {
1398         // FIXME: We ignore most attributes from the string, so an input method cannot specify e.g. a font or a glyph variation.
1399         text = [string string];
1400         extractUnderlines(string, underlines);
1401     } else
1402         text = string;
1403
1404     if (_data->_page->editorState().isInPasswordField) {
1405         // In password fields, we only allow ASCII dead keys, and don't allow inline input, matching NSSecureTextInputField.
1406         // Allowing ASCII dead keys is necessary to enable full Roman input when using a Vietnamese keyboard.
1407         ASSERT(!_data->_page->editorState().hasComposition);
1408         [[super inputContext] discardMarkedText]; // Inform the input method that we won't have an inline input area despite having been asked to.
1409         if ([text length] == 1 && [[text decomposedStringWithCanonicalMapping] characterAtIndex:0] < 0x80) {
1410             _data->_page->insertText(text, replacementRange.location, NSMaxRange(replacementRange));
1411         } else
1412             NSBeep();
1413         return;
1414     }
1415
1416     _data->_page->setComposition(text, underlines, newSelRange.location, NSMaxRange(newSelRange), replacementRange.location, NSMaxRange(replacementRange));
1417 }
1418
1419 - (NSRange)markedRange
1420 {
1421     [self _executeSavedKeypressCommands];
1422
1423     uint64_t location;
1424     uint64_t length;
1425     _data->_page->getMarkedRange(location, length);
1426
1427     LOG(TextInput, "markedRange -> (%u, %u)", location, length);
1428     return NSMakeRange(location, length);
1429 }
1430
1431 - (NSAttributedString *)attributedSubstringForProposedRange:(NSRange)nsRange actualRange:(NSRangePointer)actualRange
1432 {
1433     [self _executeSavedKeypressCommands];
1434
1435     if (!_data->_page->editorState().isContentEditable) {
1436         LOG(TextInput, "attributedSubstringFromRange:(%u, %u) -> nil", nsRange.location, nsRange.length);
1437         return nil;
1438     }
1439
1440     if (_data->_page->editorState().isInPasswordField)
1441         return nil;
1442
1443     AttributedString result;
1444     _data->_page->getAttributedSubstringFromRange(nsRange.location, NSMaxRange(nsRange), result);
1445
1446     if (actualRange)
1447         *actualRange = nsRange;
1448
1449     LOG(TextInput, "attributedSubstringFromRange:(%u, %u) -> \"%@\"", nsRange.location, nsRange.length, [result.string.get() string]);
1450     return [[result.string.get() retain] autorelease];
1451 }
1452
1453 - (NSUInteger)characterIndexForPoint:(NSPoint)thePoint
1454 {
1455     [self _executeSavedKeypressCommands];
1456
1457     NSWindow *window = [self window];
1458
1459     if (window)
1460         thePoint = [window convertScreenToBase:thePoint];
1461     thePoint = [self convertPoint:thePoint fromView:nil];  // the point is relative to the main frame
1462
1463     uint64_t result = _data->_page->characterIndexForPoint(IntPoint(thePoint));
1464     LOG(TextInput, "characterIndexForPoint:(%f, %f) -> %u", thePoint.x, thePoint.y, result);
1465     return result;
1466 }
1467
1468 - (NSRect)firstRectForCharacterRange:(NSRange)theRange actualRange:(NSRangePointer)actualRange
1469 {
1470     [self _executeSavedKeypressCommands];
1471
1472     // Just to match NSTextView's behavior. Regression tests cannot detect this;
1473     // to reproduce, use a test application from http://bugs.webkit.org/show_bug.cgi?id=4682
1474     // (type something; try ranges (1, -1) and (2, -1).
1475     if ((theRange.location + theRange.length < theRange.location) && (theRange.location + theRange.length != 0))
1476         theRange.length = 0;
1477
1478     NSRect resultRect = _data->_page->firstRectForCharacterRange(theRange.location, theRange.length);
1479     resultRect = [self convertRect:resultRect toView:nil];
1480
1481     NSWindow *window = [self window];
1482     if (window)
1483         resultRect.origin = [window convertBaseToScreen:resultRect.origin];
1484
1485     if (actualRange)
1486         *actualRange = theRange;
1487
1488     LOG(TextInput, "firstRectForCharacterRange:(%u, %u) -> (%f, %f, %f, %f)", theRange.location, theRange.length, resultRect.origin.x, resultRect.origin.y, resultRect.size.width, resultRect.size.height);
1489     return resultRect;
1490 }
1491
1492 - (void)draggedImage:(NSImage *)anImage endedAt:(NSPoint)aPoint operation:(NSDragOperation)operation
1493 {
1494     NSPoint windowImageLoc = [[self window] convertScreenToBase:aPoint];
1495     NSPoint windowMouseLoc = windowImageLoc;
1496
1497     // Prevent queued mouseDragged events from coming after the drag and fake mouseUp event.
1498     _data->_ignoringMouseDraggedEvents = YES;
1499
1500     _data->_page->dragEnded(IntPoint(windowMouseLoc), globalPoint(windowMouseLoc, [self window]), operation);
1501 }
1502
1503 - (DragApplicationFlags)applicationFlags:(id <NSDraggingInfo>)draggingInfo
1504 {
1505     uint32_t flags = 0;
1506     if ([NSApp modalWindow])
1507         flags = DragApplicationIsModal;
1508     if ([[self window] attachedSheet])
1509         flags |= DragApplicationHasAttachedSheet;
1510     if ([draggingInfo draggingSource] == self)
1511         flags |= DragApplicationIsSource;
1512     if ([[NSApp currentEvent] modifierFlags] & NSAlternateKeyMask)
1513         flags |= DragApplicationIsCopyKeyDown;
1514     return static_cast<DragApplicationFlags>(flags);
1515 }
1516
1517 - (NSDragOperation)draggingEntered:(id <NSDraggingInfo>)draggingInfo
1518 {
1519     IntPoint client([self convertPoint:[draggingInfo draggingLocation] fromView:nil]);
1520     IntPoint global(globalPoint([draggingInfo draggingLocation], [self window]));
1521     DragData dragData(draggingInfo, client, global, static_cast<DragOperation>([draggingInfo draggingSourceOperationMask]), [self applicationFlags:draggingInfo]);
1522
1523     _data->_page->resetDragOperation();
1524     _data->_page->dragEntered(&dragData, [[draggingInfo draggingPasteboard] name]);
1525     return NSDragOperationCopy;
1526 }
1527
1528 - (NSDragOperation)draggingUpdated:(id <NSDraggingInfo>)draggingInfo
1529 {
1530     IntPoint client([self convertPoint:[draggingInfo draggingLocation] fromView:nil]);
1531     IntPoint global(globalPoint([draggingInfo draggingLocation], [self window]));
1532     DragData dragData(draggingInfo, client, global, static_cast<DragOperation>([draggingInfo draggingSourceOperationMask]), [self applicationFlags:draggingInfo]);
1533     _data->_page->dragUpdated(&dragData, [[draggingInfo draggingPasteboard] name]);
1534     return _data->_page->dragOperation();
1535 }
1536
1537 - (void)draggingExited:(id <NSDraggingInfo>)draggingInfo
1538 {
1539     IntPoint client([self convertPoint:[draggingInfo draggingLocation] fromView:nil]);
1540     IntPoint global(globalPoint([draggingInfo draggingLocation], [self window]));
1541     DragData dragData(draggingInfo, client, global, static_cast<DragOperation>([draggingInfo draggingSourceOperationMask]), [self applicationFlags:draggingInfo]);
1542     _data->_page->dragExited(&dragData, [[draggingInfo draggingPasteboard] name]);
1543     _data->_page->resetDragOperation();
1544 }
1545
1546 - (BOOL)prepareForDragOperation:(id <NSDraggingInfo>)draggingInfo
1547 {
1548     return YES;
1549 }
1550
1551 // FIXME: This code is more or less copied from Pasteboard::getBestURL.
1552 // It would be nice to be able to share the code somehow.
1553 static void maybeCreateSandboxExtensionFromPasteboard(NSPasteboard *pasteboard, SandboxExtension::Handle& sandboxExtensionHandle)
1554 {
1555     NSArray *types = [pasteboard types];
1556     if (![types containsObject:NSFilenamesPboardType])
1557         return;
1558
1559     NSArray *files = [pasteboard propertyListForType:NSFilenamesPboardType];
1560     if ([files count] != 1)
1561         return;
1562
1563     NSString *file = [files objectAtIndex:0];
1564     BOOL isDirectory;
1565     if (![[NSFileManager defaultManager] fileExistsAtPath:file isDirectory:&isDirectory])
1566         return;
1567
1568     if (isDirectory)
1569         return;
1570
1571     SandboxExtension::createHandle("/", SandboxExtension::ReadOnly, sandboxExtensionHandle);
1572 }
1573
1574 - (BOOL)performDragOperation:(id <NSDraggingInfo>)draggingInfo
1575 {
1576     IntPoint client([self convertPoint:[draggingInfo draggingLocation] fromView:nil]);
1577     IntPoint global(globalPoint([draggingInfo draggingLocation], [self window]));
1578     DragData dragData(draggingInfo, client, global, static_cast<DragOperation>([draggingInfo draggingSourceOperationMask]), [self applicationFlags:draggingInfo]);
1579
1580     SandboxExtension::Handle sandboxExtensionHandle;
1581     maybeCreateSandboxExtensionFromPasteboard([draggingInfo draggingPasteboard], sandboxExtensionHandle);
1582
1583     _data->_page->performDrag(&dragData, [[draggingInfo draggingPasteboard] name], sandboxExtensionHandle);
1584
1585     return YES;
1586 }
1587
1588 // This code is needed to support drag and drop when the drag types cannot be matched.
1589 // This is the case for elements that do not place content
1590 // in the drag pasteboard automatically when the drag start (i.e. dragging a DIV element).
1591 - (NSView *)_hitTest:(NSPoint *)point dragTypes:(NSSet *)types
1592 {
1593     if ([[self superview] mouse:*point inRect:[self frame]])
1594         return self;
1595     return nil;
1596 }
1597
1598 - (BOOL)_windowResizeMouseLocationIsInVisibleScrollerThumb:(NSPoint)loc
1599 {
1600     NSPoint localPoint = [self convertPoint:loc fromView:nil];
1601     NSRect visibleThumbRect = NSRect(_data->_page->visibleScrollerThumbRect());
1602     return NSMouseInRect(localPoint, visibleThumbRect, [self isFlipped]);
1603 }
1604
1605 - (void)_updateWindowVisibility
1606 {
1607     _data->_page->updateWindowIsVisible(![[self window] isMiniaturized]);
1608 }
1609
1610 - (BOOL)_ownsWindowGrowBox
1611 {
1612     NSWindow* window = [self window];
1613     if (!window)
1614         return NO;
1615
1616     NSView *superview = [self superview];
1617     if (!superview)
1618         return NO;
1619
1620     NSRect growBoxRect = [window _growBoxRect];
1621     if (NSIsEmptyRect(growBoxRect))
1622         return NO;
1623
1624     NSRect visibleRect = [self visibleRect];
1625     if (NSIsEmptyRect(visibleRect))
1626         return NO;
1627
1628     NSRect visibleRectInWindowCoords = [self convertRect:visibleRect toView:nil];
1629     if (!NSIntersectsRect(growBoxRect, visibleRectInWindowCoords))
1630         return NO;
1631
1632     return YES;
1633 }
1634
1635 - (BOOL)_updateGrowBoxForWindowFrameChange
1636 {
1637     // Temporarily enable the resize indicator to make a the _ownsWindowGrowBox calculation work.
1638     BOOL wasShowingIndicator = [[self window] showsResizeIndicator];
1639     if (!wasShowingIndicator)
1640         [[self window] setShowsResizeIndicator:YES];
1641
1642     BOOL ownsGrowBox = [self _ownsWindowGrowBox];
1643     _data->_page->setWindowResizerSize(ownsGrowBox ? enclosingIntRect([[self window] _growBoxRect]).size() : IntSize());
1644
1645     if (ownsGrowBox)
1646         [[self window] _setShowOpaqueGrowBoxForOwner:(_data->_page->hasHorizontalScrollbar() || _data->_page->hasVerticalScrollbar() ? self : nil)];
1647     else
1648         [[self window] _setShowOpaqueGrowBoxForOwner:nil];
1649
1650     // Once WebCore can draw the window resizer, this should read:
1651     // if (wasShowingIndicator)
1652     //     [[self window] setShowsResizeIndicator:!ownsGrowBox];
1653     if (!wasShowingIndicator)
1654         [[self window] setShowsResizeIndicator:NO];
1655
1656     return ownsGrowBox;
1657 }
1658
1659 - (void)addWindowObserversForWindow:(NSWindow *)window
1660 {
1661     if (window) {
1662         [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(_windowDidBecomeKey:)
1663                                                      name:NSWindowDidBecomeKeyNotification object:nil];
1664         [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(_windowDidResignKey:)
1665                                                      name:NSWindowDidResignKeyNotification object:nil];
1666         [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(_windowDidMiniaturize:)
1667                                                      name:NSWindowDidMiniaturizeNotification object:window];
1668         [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(_windowDidDeminiaturize:)
1669                                                      name:NSWindowDidDeminiaturizeNotification object:window];
1670         [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(_windowFrameDidChange:)
1671                                                      name:NSWindowDidMoveNotification object:window];
1672         [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(_windowFrameDidChange:)
1673                                                      name:NSWindowDidResizeNotification object:window];
1674         [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(_windowDidOrderOffScreen:)
1675                                                      name:@"NSWindowDidOrderOffScreenNotification" object:window];
1676         [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(_windowDidOrderOnScreen:)
1677                                                      name:@"_NSWindowDidBecomeVisible" object:window];
1678     }
1679 }
1680
1681 - (void)removeWindowObservers
1682 {
1683     NSWindow *window = [self window];
1684     if (!window)
1685         return;
1686
1687     [[NSNotificationCenter defaultCenter] removeObserver:self name:NSWindowDidBecomeKeyNotification object:nil];
1688     [[NSNotificationCenter defaultCenter] removeObserver:self name:NSWindowDidResignKeyNotification object:nil];
1689     [[NSNotificationCenter defaultCenter] removeObserver:self name:NSWindowDidMiniaturizeNotification object:window];
1690     [[NSNotificationCenter defaultCenter] removeObserver:self name:NSWindowDidDeminiaturizeNotification object:window];
1691     [[NSNotificationCenter defaultCenter] removeObserver:self name:NSWindowDidMoveNotification object:window];
1692     [[NSNotificationCenter defaultCenter] removeObserver:self name:NSWindowDidResizeNotification object:window];
1693     [[NSNotificationCenter defaultCenter] removeObserver:self name:@"NSWindowDidOrderOffScreenNotification" object:window];
1694     [[NSNotificationCenter defaultCenter] removeObserver:self name:@"_NSWindowDidBecomeVisible" object:window];
1695 }
1696
1697 - (void)viewWillMoveToWindow:(NSWindow *)window
1698 {
1699     NSWindow *currentWindow = [self window];
1700     if (window == currentWindow)
1701         return;
1702
1703     [self removeWindowObservers];
1704     [self addWindowObserversForWindow:window];
1705
1706     if ([currentWindow _growBoxOwner] == self)
1707         [currentWindow _setShowOpaqueGrowBoxForOwner:nil];
1708 }
1709
1710 - (void)viewDidMoveToWindow
1711 {
1712     // We want to make sure to update the active state while hidden, so if the view is about to become visible, we
1713     // update the active state first and then make it visible. If the view is about to be hidden, we hide it first and then
1714     // update the active state.
1715     if ([self window]) {
1716         _data->_page->viewStateDidChange(WebPageProxy::ViewWindowIsActive);
1717         _data->_page->viewStateDidChange(WebPageProxy::ViewIsVisible | WebPageProxy::ViewIsInWindow);
1718         [self _updateWindowVisibility];
1719         [self _updateWindowAndViewFrames];
1720
1721         // Initialize remote accessibility when the window connection has been established.
1722 #if !defined(BUILDING_ON_SNOW_LEOPARD)
1723         NSData *remoteElementToken = WKAXRemoteTokenForElement(self);
1724         NSData *remoteWindowToken = WKAXRemoteTokenForElement([self accessibilityAttributeValue:NSAccessibilityWindowAttribute]);
1725         CoreIPC::DataReference elementToken = CoreIPC::DataReference(reinterpret_cast<const uint8_t*>([remoteElementToken bytes]), [remoteElementToken length]);
1726         CoreIPC::DataReference windowToken = CoreIPC::DataReference(reinterpret_cast<const uint8_t*>([remoteWindowToken bytes]), [remoteWindowToken length]);
1727         _data->_page->registerUIProcessAccessibilityTokens(elementToken, windowToken);
1728 #endif
1729
1730     } else {
1731         _data->_page->viewStateDidChange(WebPageProxy::ViewIsVisible);
1732         _data->_page->viewStateDidChange(WebPageProxy::ViewWindowIsActive | WebPageProxy::ViewIsInWindow);
1733
1734 #if ENABLE(GESTURE_EVENTS)
1735         if (_data->_endGestureMonitor) {
1736             [NSEvent removeMonitor:_data->_endGestureMonitor];
1737             _data->_endGestureMonitor = nil;
1738         }
1739 #endif
1740 #if !defined(BUILDING_ON_SNOW_LEOPARD)
1741         WKHideWordDefinitionWindow();
1742 #endif
1743     }
1744 }
1745
1746 - (void)_windowDidBecomeKey:(NSNotification *)notification
1747 {
1748     NSWindow *keyWindow = [notification object];
1749     if (keyWindow == [self window] || keyWindow == [[self window] attachedSheet]) {
1750         [self _updateSecureInputState];
1751         _data->_page->viewStateDidChange(WebPageProxy::ViewWindowIsActive);
1752     }
1753 }
1754
1755 - (void)_windowDidResignKey:(NSNotification *)notification
1756 {
1757     NSWindow *formerKeyWindow = [notification object];
1758     if (formerKeyWindow == [self window] || formerKeyWindow == [[self window] attachedSheet]) {
1759         [self _updateSecureInputState];
1760         _data->_page->viewStateDidChange(WebPageProxy::ViewWindowIsActive);
1761     }
1762 }
1763
1764 - (void)_windowDidMiniaturize:(NSNotification *)notification
1765 {
1766     [self _updateWindowVisibility];
1767 }
1768
1769 - (void)_windowDidDeminiaturize:(NSNotification *)notification
1770 {
1771     [self _updateWindowVisibility];
1772 }
1773
1774 - (void)_windowFrameDidChange:(NSNotification *)notification
1775 {
1776     [self _updateWindowAndViewFrames];
1777 }
1778
1779 - (void)_windowDidOrderOffScreen:(NSNotification *)notification
1780 {
1781     _data->_page->viewStateDidChange(WebPageProxy::ViewIsVisible);
1782 }
1783
1784 - (void)_windowDidOrderOnScreen:(NSNotification *)notification
1785 {
1786     _data->_page->viewStateDidChange(WebPageProxy::ViewIsVisible);
1787 }
1788
1789 static void drawPageBackground(CGContextRef context, WebPageProxy* page, const IntRect& rect)
1790 {
1791     if (!page->drawsBackground())
1792         return;
1793
1794     CGContextSaveGState(context);
1795     CGContextSetBlendMode(context, kCGBlendModeCopy);
1796
1797     CGColorRef backgroundColor;
1798     if (page->drawsTransparentBackground())
1799         backgroundColor = CGColorGetConstantColor(kCGColorClear);
1800     else
1801         backgroundColor = CGColorGetConstantColor(kCGColorWhite);
1802
1803     CGContextSetFillColorWithColor(context, backgroundColor);
1804     CGContextFillRect(context, rect);
1805
1806     CGContextRestoreGState(context);
1807 }
1808
1809 - (void)drawRect:(NSRect)rect
1810 {
1811     LOG(View, "drawRect: x:%g, y:%g, width:%g, height:%g", rect.origin.x, rect.origin.y, rect.size.width, rect.size.height);
1812     _data->_page->endPrinting();
1813     CGContextRef context = static_cast<CGContextRef>([[NSGraphicsContext currentContext] graphicsPort]);
1814
1815     if (DrawingAreaProxyImpl* drawingArea = static_cast<DrawingAreaProxyImpl*>(_data->_page->drawingArea())) {
1816         const NSRect *rectsBeingDrawn;
1817         NSInteger numRectsBeingDrawn;
1818         [self getRectsBeingDrawn:&rectsBeingDrawn count:&numRectsBeingDrawn];
1819         for (NSInteger i = 0; i < numRectsBeingDrawn; ++i) {
1820             Region unpaintedRegion;
1821             IntRect rect = enclosingIntRect(rectsBeingDrawn[i]);
1822             drawingArea->paint(context, rect, unpaintedRegion);
1823
1824             Vector<IntRect> unpaintedRects = unpaintedRegion.rects();
1825             for (size_t i = 0; i < unpaintedRects.size(); ++i)
1826                 drawPageBackground(context, _data->_page.get(), unpaintedRects[i]);
1827         }
1828     } else
1829         drawPageBackground(context, _data->_page.get(), enclosingIntRect(rect));
1830
1831     _data->_page->didDraw();
1832 }
1833
1834 - (BOOL)isOpaque
1835 {
1836     return _data->_page->drawsBackground();
1837 }
1838
1839 - (BOOL)mouseDownCanMoveWindow
1840 {
1841     // -[NSView mouseDownCanMoveWindow] returns YES when the NSView is transparent,
1842     // but we don't want a drag in the NSView to move the window, even if it's transparent.
1843     return NO;
1844 }
1845
1846 - (void)viewDidHide
1847 {
1848     _data->_page->viewStateDidChange(WebPageProxy::ViewIsVisible);
1849 }
1850
1851 - (void)viewDidUnhide
1852 {
1853     _data->_page->viewStateDidChange(WebPageProxy::ViewIsVisible);
1854 }
1855
1856 - (id)accessibilityFocusedUIElement
1857 {
1858     if (_data->_pdfViewController)
1859         return NSAccessibilityUnignoredDescendant(_data->_pdfViewController->pdfView());
1860
1861     return _data->_remoteAccessibilityChild.get();
1862 }
1863
1864 - (BOOL)accessibilityIsIgnored
1865 {
1866     return NO;
1867 }
1868
1869 - (id)accessibilityHitTest:(NSPoint)point
1870 {
1871     if (_data->_pdfViewController)
1872         return [_data->_pdfViewController->pdfView() accessibilityHitTest:point];
1873
1874     return _data->_remoteAccessibilityChild.get();
1875 }
1876
1877 - (id)accessibilityAttributeValue:(NSString*)attribute
1878 {
1879     if ([attribute isEqualToString:NSAccessibilityChildrenAttribute]) {
1880
1881         id child = nil;
1882         if (_data->_pdfViewController)
1883             child = NSAccessibilityUnignoredDescendant(_data->_pdfViewController->pdfView());
1884         else if (_data->_remoteAccessibilityChild)
1885             child = _data->_remoteAccessibilityChild.get();
1886
1887         if (!child)
1888             return nil;
1889         return [NSArray arrayWithObject:child];
1890     }
1891     if ([attribute isEqualToString:NSAccessibilityRoleAttribute])
1892         return NSAccessibilityGroupRole;
1893     if ([attribute isEqualToString:NSAccessibilityRoleDescriptionAttribute])
1894         return NSAccessibilityRoleDescription(NSAccessibilityGroupRole, nil);
1895     if ([attribute isEqualToString:NSAccessibilityParentAttribute])
1896         return NSAccessibilityUnignoredAncestor([self superview]);
1897     if ([attribute isEqualToString:NSAccessibilityEnabledAttribute])
1898         return [NSNumber numberWithBool:YES];
1899
1900     return [super accessibilityAttributeValue:attribute];
1901 }
1902
1903 - (NSView *)hitTest:(NSPoint)point
1904 {
1905     NSView *hitView = [super hitTest:point];
1906     if (hitView && _data && hitView == _data->_layerHostingView)
1907         hitView = self;
1908
1909     return hitView;
1910 }
1911
1912 - (NSInteger)conversationIdentifier
1913 {
1914     return (NSInteger)self;
1915 }
1916
1917
1918 - (BOOL)canChangeFrameLayout:(WKFrameRef)frameRef
1919 {
1920     // PDF documents are already paginated, so we can't change them to add headers and footers.
1921     return !toImpl(frameRef)->isMainFrame() || !_data->_pdfViewController;
1922 }
1923
1924 - (NSPrintOperation *)printOperationWithPrintInfo:(NSPrintInfo *)printInfo forFrame:(WKFrameRef)frameRef
1925 {
1926     LOG(View, "Creating an NSPrintOperation for frame '%s'", toImpl(frameRef)->url().utf8().data());
1927
1928     // Only the top frame can currently contain a PDF view.
1929     if (_data->_pdfViewController) {
1930         if (!toImpl(frameRef)->isMainFrame())
1931             return 0;
1932         return _data->_pdfViewController->makePrintOperation(printInfo);
1933     } else {
1934         RetainPtr<WKPrintingView> printingView(AdoptNS, [[WKPrintingView alloc] initWithFrameProxy:toImpl(frameRef) view:self]);
1935         // NSPrintOperation takes ownership of the view.
1936         NSPrintOperation *printOperation = [NSPrintOperation printOperationWithView:printingView.get()];
1937         [printOperation setCanSpawnSeparateThread:YES];
1938         [printOperation setJobTitle:toImpl(frameRef)->title()];
1939         printingView->_printOperation = printOperation;
1940         return printOperation;
1941     }
1942 }
1943
1944 @end
1945
1946 @implementation WKView (Internal)
1947
1948 - (PassOwnPtr<WebKit::DrawingAreaProxy>)_createDrawingAreaProxy
1949 {
1950     return DrawingAreaProxyImpl::create(_data->_page.get());
1951 }
1952
1953 - (BOOL)_isFocused
1954 {
1955     if (_data->_inBecomeFirstResponder)
1956         return YES;
1957     if (_data->_inResignFirstResponder)
1958         return NO;
1959     return [[self window] firstResponder] == self;
1960 }
1961
1962 - (void)_processDidCrash
1963 {
1964     [self setNeedsDisplay:YES];
1965     [self _updateRemoteAccessibilityRegistration:NO];
1966 }
1967
1968 - (void)_pageClosed
1969 {
1970     [self _updateRemoteAccessibilityRegistration:NO];
1971 }
1972
1973 - (void)_didRelaunchProcess
1974 {
1975     [self setNeedsDisplay:YES];
1976 }
1977
1978 - (void)_setCursor:(NSCursor *)cursor
1979 {
1980     if ([NSCursor currentCursor] == cursor)
1981         return;
1982     [cursor set];
1983 }
1984
1985 - (void)_setUserInterfaceItemState:(NSString *)commandName enabled:(BOOL)isEnabled state:(int)newState
1986 {
1987     ValidationVector items = _data->_validationMap.take(commandName);
1988     size_t size = items.size();
1989     for (size_t i = 0; i < size; ++i) {
1990         ValidationItem item = items[i].get();
1991         [menuItem(item) setState:newState];
1992         [menuItem(item) setEnabled:isEnabled];
1993         [toolbarItem(item) setEnabled:isEnabled];
1994         // FIXME <rdar://problem/8803392>: If the item is neither a menu nor toolbar item, it will be left enabled.
1995     }
1996 }
1997
1998 - (void)_resendKeyDownEvent:(NSEvent *)event
1999 {
2000     // resending the event may destroy this WKView
2001     RetainPtr<WKView> protect(self);
2002
2003     ASSERT(!_data->_keyDownEventBeingResent);
2004     _data->_keyDownEventBeingResent = event;
2005     [NSApp _setCurrentEvent:event];
2006     [NSApp sendEvent:event];
2007
2008     _data->_keyDownEventBeingResent = nullptr;
2009 }
2010
2011 - (BOOL)_interpretKeyEvent:(NSEvent *)event savingCommandsTo:(Vector<WebCore::KeypressCommand>&)commands
2012 {
2013     ASSERT(!_data->_interpretKeyEventsParameters);
2014     ASSERT(commands.isEmpty());
2015
2016     if ([event type] == NSFlagsChanged)
2017         return NO;
2018
2019     WKViewInterpretKeyEventsParameters parameters;
2020     parameters.eventInterpretationHadSideEffects = false;
2021     parameters.executingSavedKeypressCommands = false;
2022     // We assume that an input method has consumed the event, and only change this assumption if one of the NSTextInput methods is called.
2023     // We assume the IM will *not* consume hotkey sequences.
2024     parameters.consumedByIM = !([event modifierFlags] & NSCommandKeyMask);
2025     parameters.commands = &commands;
2026     _data->_interpretKeyEventsParameters = &parameters;
2027
2028     [self interpretKeyEvents:[NSArray arrayWithObject:event]];
2029
2030     _data->_interpretKeyEventsParameters = 0;
2031
2032     // An input method may consume an event and not tell us (e.g. when displaying a candidate window),
2033     // in which case we should not bubble the event up the DOM.
2034     if (parameters.consumedByIM)
2035         return YES;
2036
2037     // If we have already executed all or some of the commands, the event is "handled". Note that there are additional checks on web process side.
2038     return parameters.eventInterpretationHadSideEffects;
2039 }
2040
2041 - (NSRect)_convertToDeviceSpace:(NSRect)rect
2042 {
2043     return toDeviceSpace(rect, [self window]);
2044 }
2045
2046 - (NSRect)_convertToUserSpace:(NSRect)rect
2047 {
2048     return toUserSpace(rect, [self window]);
2049 }
2050
2051 // Any non-zero value will do, but using something recognizable might help us debug some day.
2052 #define TRACKING_RECT_TAG 0xBADFACE
2053
2054 - (NSTrackingRectTag)addTrackingRect:(NSRect)rect owner:(id)owner userData:(void *)data assumeInside:(BOOL)assumeInside
2055 {
2056     ASSERT(_data->_trackingRectOwner == nil);
2057     _data->_trackingRectOwner = owner;
2058     _data->_trackingRectUserData = data;
2059     return TRACKING_RECT_TAG;
2060 }
2061
2062 - (NSTrackingRectTag)_addTrackingRect:(NSRect)rect owner:(id)owner userData:(void *)data assumeInside:(BOOL)assumeInside useTrackingNum:(int)tag
2063 {
2064     ASSERT(tag == 0 || tag == TRACKING_RECT_TAG);
2065     ASSERT(_data->_trackingRectOwner == nil);
2066     _data->_trackingRectOwner = owner;
2067     _data->_trackingRectUserData = data;
2068     return TRACKING_RECT_TAG;
2069 }
2070
2071 - (void)_addTrackingRects:(NSRect *)rects owner:(id)owner userDataList:(void **)userDataList assumeInsideList:(BOOL *)assumeInsideList trackingNums:(NSTrackingRectTag *)trackingNums count:(int)count
2072 {
2073     ASSERT(count == 1);
2074     ASSERT(trackingNums[0] == 0 || trackingNums[0] == TRACKING_RECT_TAG);
2075     ASSERT(_data->_trackingRectOwner == nil);
2076     _data->_trackingRectOwner = owner;
2077     _data->_trackingRectUserData = userDataList[0];
2078     trackingNums[0] = TRACKING_RECT_TAG;
2079 }
2080
2081 - (void)removeTrackingRect:(NSTrackingRectTag)tag
2082 {
2083     if (!_data)
2084         return;
2085
2086     if (tag == 0)
2087         return;
2088
2089     if (tag == TRACKING_RECT_TAG) {
2090         _data->_trackingRectOwner = nil;
2091         return;
2092     }
2093
2094     if (tag == _data->_lastToolTipTag) {
2095         [super removeTrackingRect:tag];
2096         _data->_lastToolTipTag = 0;
2097         return;
2098     }
2099
2100     // If any other tracking rect is being removed, we don't know how it was created
2101     // and it's possible there's a leak involved (see 3500217)
2102     ASSERT_NOT_REACHED();
2103 }
2104
2105 - (void)_removeTrackingRects:(NSTrackingRectTag *)tags count:(int)count
2106 {
2107     int i;
2108     for (i = 0; i < count; ++i) {
2109         int tag = tags[i];
2110         if (tag == 0)
2111             continue;
2112         ASSERT(tag == TRACKING_RECT_TAG);
2113         if (_data != nil) {
2114             _data->_trackingRectOwner = nil;
2115         }
2116     }
2117 }
2118
2119 - (void)_sendToolTipMouseExited
2120 {
2121     // Nothing matters except window, trackingNumber, and userData.
2122     NSEvent *fakeEvent = [NSEvent enterExitEventWithType:NSMouseExited
2123         location:NSMakePoint(0, 0)
2124         modifierFlags:0
2125         timestamp:0
2126         windowNumber:[[self window] windowNumber]
2127         context:NULL
2128         eventNumber:0
2129         trackingNumber:TRACKING_RECT_TAG
2130         userData:_data->_trackingRectUserData];
2131     [_data->_trackingRectOwner mouseExited:fakeEvent];
2132 }
2133
2134 - (void)_sendToolTipMouseEntered
2135 {
2136     // Nothing matters except window, trackingNumber, and userData.
2137     NSEvent *fakeEvent = [NSEvent enterExitEventWithType:NSMouseEntered
2138         location:NSMakePoint(0, 0)
2139         modifierFlags:0
2140         timestamp:0
2141         windowNumber:[[self window] windowNumber]
2142         context:NULL
2143         eventNumber:0
2144         trackingNumber:TRACKING_RECT_TAG
2145         userData:_data->_trackingRectUserData];
2146     [_data->_trackingRectOwner mouseEntered:fakeEvent];
2147 }
2148
2149 - (NSString *)view:(NSView *)view stringForToolTip:(NSToolTipTag)tag point:(NSPoint)point userData:(void *)data
2150 {
2151     return nsStringFromWebCoreString(_data->_page->toolTip());
2152 }
2153
2154 - (void)_toolTipChangedFrom:(NSString *)oldToolTip to:(NSString *)newToolTip
2155 {
2156     if (oldToolTip)
2157         [self _sendToolTipMouseExited];
2158
2159     if (newToolTip && [newToolTip length] > 0) {
2160         // See radar 3500217 for why we remove all tooltips rather than just the single one we created.
2161         [self removeAllToolTips];
2162         NSRect wideOpenRect = NSMakeRect(-100000, -100000, 200000, 200000);
2163         _data->_lastToolTipTag = [self addToolTipRect:wideOpenRect owner:self userData:NULL];
2164         [self _sendToolTipMouseEntered];
2165     }
2166 }
2167
2168 - (void)_setFindIndicator:(PassRefPtr<FindIndicator>)findIndicator fadeOut:(BOOL)fadeOut
2169 {
2170     if (!findIndicator) {
2171         _data->_findIndicatorWindow = 0;
2172         return;
2173     }
2174
2175     if (!_data->_findIndicatorWindow)
2176         _data->_findIndicatorWindow = FindIndicatorWindow::create(self);
2177
2178     _data->_findIndicatorWindow->setFindIndicator(findIndicator, fadeOut);
2179 }
2180
2181 - (void)_enterAcceleratedCompositingMode:(const LayerTreeContext&)layerTreeContext
2182 {
2183     ASSERT(!_data->_layerHostingView);
2184     ASSERT(!layerTreeContext.isEmpty());
2185
2186     // Create an NSView that will host our layer tree.
2187     _data->_layerHostingView.adoptNS([[NSView alloc] initWithFrame:[self bounds]]);
2188     [_data->_layerHostingView.get() setAutoresizingMask:NSViewWidthSizable | NSViewHeightSizable];
2189
2190     [CATransaction begin];
2191     [CATransaction setDisableActions:YES];
2192     [self addSubview:_data->_layerHostingView.get()];
2193
2194     // Create a root layer that will back the NSView.
2195     RetainPtr<CALayer> rootLayer(AdoptNS, [[CALayer alloc] init]);
2196 #ifndef NDEBUG
2197     [rootLayer.get() setName:@"Hosting root layer"];
2198 #endif
2199
2200     CALayer *renderLayer = WKMakeRenderLayer(layerTreeContext.contextID);
2201     [rootLayer.get() addSublayer:renderLayer];
2202
2203     [_data->_layerHostingView.get() setLayer:rootLayer.get()];
2204     [_data->_layerHostingView.get() setWantsLayer:YES];
2205
2206     [CATransaction commit];
2207 }
2208
2209 - (void)_exitAcceleratedCompositingMode
2210 {
2211     ASSERT(_data->_layerHostingView);
2212
2213     [_data->_layerHostingView.get() removeFromSuperview];
2214     [_data->_layerHostingView.get() setLayer:nil];
2215     [_data->_layerHostingView.get() setWantsLayer:NO];
2216
2217     _data->_layerHostingView = nullptr;
2218 }
2219
2220 - (void)_setAccessibilityWebProcessToken:(NSData *)data
2221 {
2222 #if !defined(BUILDING_ON_SNOW_LEOPARD)
2223     _data->_remoteAccessibilityChild = WKAXRemoteElementForToken(data);
2224     [self _updateRemoteAccessibilityRegistration:YES];
2225 #endif
2226 }
2227
2228 - (void)_setComplexTextInputEnabled:(BOOL)complexTextInputEnabled pluginComplexTextInputIdentifier:(uint64_t)pluginComplexTextInputIdentifier
2229 {
2230     BOOL inputSourceChanged = _data->_pluginComplexTextInputIdentifier;
2231
2232     if (complexTextInputEnabled) {
2233         // Check if we're already allowing text input for this plug-in.
2234         if (pluginComplexTextInputIdentifier == _data->_pluginComplexTextInputIdentifier)
2235             return;
2236
2237         _data->_pluginComplexTextInputIdentifier = pluginComplexTextInputIdentifier;
2238
2239     } else {
2240         // Check if we got a request to disable complex text input for a plug-in that is not the current plug-in.
2241         if (pluginComplexTextInputIdentifier != _data->_pluginComplexTextInputIdentifier)
2242             return;
2243
2244         _data->_pluginComplexTextInputIdentifier = 0;
2245     }
2246
2247     if (inputSourceChanged) {
2248         // Inform the out of line window that the input source changed.
2249         [[WKTextInputWindowController sharedTextInputWindowController] keyboardInputSourceChanged];
2250     }
2251 }
2252
2253 - (void)_setPageHasCustomRepresentation:(BOOL)pageHasCustomRepresentation
2254 {
2255     _data->_pdfViewController = nullptr;
2256
2257     if (pageHasCustomRepresentation)
2258         _data->_pdfViewController = PDFViewController::create(self);
2259 }
2260
2261 - (void)_didFinishLoadingDataForCustomRepresentationWithSuggestedFilename:(const String&)suggestedFilename dataReference:(const CoreIPC::DataReference&)dataReference
2262 {
2263     ASSERT(_data->_pdfViewController);
2264
2265     _data->_pdfViewController->setPDFDocumentData(_data->_page->mainFrame()->mimeType(), suggestedFilename, dataReference);
2266 }
2267
2268 - (double)_customRepresentationZoomFactor
2269 {
2270     if (!_data->_pdfViewController)
2271         return 1;
2272
2273     return _data->_pdfViewController->zoomFactor();
2274 }
2275
2276 - (void)_setCustomRepresentationZoomFactor:(double)zoomFactor
2277 {
2278     if (!_data->_pdfViewController)
2279         return;
2280
2281     _data->_pdfViewController->setZoomFactor(zoomFactor);
2282 }
2283
2284 - (void)_findStringInCustomRepresentation:(NSString *)string withFindOptions:(WebKit::FindOptions)options maxMatchCount:(NSUInteger)count
2285 {
2286     if (!_data->_pdfViewController)
2287         return;
2288
2289     _data->_pdfViewController->findString(string, options, count);
2290 }
2291
2292 - (void)_countStringMatchesInCustomRepresentation:(NSString *)string withFindOptions:(WebKit::FindOptions)options maxMatchCount:(NSUInteger)count
2293 {
2294     if (!_data->_pdfViewController)
2295         return;
2296
2297     _data->_pdfViewController->countStringMatches(string, options, count);
2298 }
2299
2300 - (void)_setDragImage:(NSImage *)image at:(NSPoint)clientPoint linkDrag:(BOOL)linkDrag
2301 {
2302     // We need to prevent re-entering this call to avoid crashing in AppKit.
2303     // Given the asynchronous nature of WebKit2 this can now happen.
2304     if (_data->_dragHasStarted)
2305         return;
2306
2307     _data->_dragHasStarted = YES;
2308     [super dragImage:image
2309                   at:clientPoint
2310               offset:NSZeroSize
2311                event:(linkDrag) ? [NSApp currentEvent] :_data->_mouseDownEvent
2312           pasteboard:[NSPasteboard pasteboardWithName:NSDragPboard]
2313               source:self
2314            slideBack:YES];
2315     _data->_dragHasStarted = NO;
2316 }
2317
2318 - (void)_updateSecureInputState
2319 {
2320     if (![[self window] isKeyWindow] || ![self _isFocused]) {
2321         if (_data->_inSecureInputState) {
2322             DisableSecureEventInput();
2323             _data->_inSecureInputState = NO;
2324         }
2325         return;
2326     }
2327     // WKView has a single input context for all editable areas (except for plug-ins).
2328     NSTextInputContext *context = [super inputContext];
2329     bool isInPasswordField = _data->_page->editorState().isInPasswordField;
2330
2331     if (isInPasswordField) {
2332         if (!_data->_inSecureInputState)
2333             EnableSecureEventInput();
2334         static NSArray *romanInputSources = [[NSArray alloc] initWithObjects:&NSAllRomanInputSourcesLocaleIdentifier count:1];
2335         [context setAllowedInputSourceLocales:romanInputSources];
2336     } else {
2337         if (_data->_inSecureInputState)
2338             DisableSecureEventInput();
2339         [context setAllowedInputSourceLocales:nil];
2340     }
2341     _data->_inSecureInputState = isInPasswordField;
2342 }
2343
2344 - (void)_updateTextInputStateIncludingSecureInputState:(BOOL)updateSecureInputState
2345 {
2346     const EditorState& editorState = _data->_page->editorState();
2347     if (updateSecureInputState) {
2348         // This is a temporary state when editing. Flipping secure input state too quickly can expose race conditions.
2349         if (!editorState.selectionIsNone)
2350             [self _updateSecureInputState];
2351     }
2352
2353     if (!editorState.hasComposition || editorState.shouldIgnoreCompositionSelectionChange)
2354         return;
2355
2356     _data->_page->confirmCompositionWithoutDisturbingSelection();
2357     [[super inputContext] discardMarkedText];
2358 }
2359
2360 - (void)_resetTextInputState
2361 {
2362     [[super inputContext] discardMarkedText];
2363
2364     if (_data->_inSecureInputState) {
2365         DisableSecureEventInput();
2366         _data->_inSecureInputState = NO;
2367     }
2368 }
2369
2370 - (void)_setDrawingAreaSize:(NSSize)size
2371 {
2372     if (!_data->_page->drawingArea())
2373         return;
2374
2375     _data->_page->drawingArea()->setSize(IntSize(size), IntSize(_data->_resizeScrollOffset));
2376     _data->_resizeScrollOffset = NSZeroSize;
2377 }
2378
2379 - (void)_didChangeScrollbarsForMainFrame
2380 {
2381     [self _updateGrowBoxForWindowFrameChange];
2382 }
2383
2384 #if ENABLE(FULLSCREEN_API)
2385 - (WKFullScreenWindowController*)fullScreenWindowController
2386 {
2387     if (!_data->_fullScreenWindowController) {
2388         _data->_fullScreenWindowController.adoptNS([[WKFullScreenWindowController alloc] init]);
2389         [_data->_fullScreenWindowController.get() setWebView:self];
2390     }
2391     return _data->_fullScreenWindowController.get();
2392 }
2393 #endif
2394
2395 - (bool)_executeSavedCommandBySelector:(SEL)selector
2396 {
2397     // The sink does two things: 1) Tells us if the responder went unhandled, and
2398     // 2) prevents any NSBeep; we don't ever want to beep here.
2399     RetainPtr<WKResponderChainSink> sink(AdoptNS, [[WKResponderChainSink alloc] initWithResponderChain:self]);
2400     [super doCommandBySelector:selector];
2401     [sink.get() detach];
2402     return ![sink.get() didReceiveUnhandledCommand];
2403 }
2404
2405 @end
2406
2407 @implementation WKView (Private)
2408
2409 - (void)disableFrameSizeUpdates
2410 {
2411     _frameSizeUpdatesDisabledCount++;
2412 }
2413
2414 - (void)enableFrameSizeUpdates
2415 {
2416     if (!_frameSizeUpdatesDisabledCount)
2417         return;
2418
2419     if (!(--_frameSizeUpdatesDisabledCount))
2420         [self _setDrawingAreaSize:[self frame].size];
2421 }
2422
2423 - (BOOL)frameSizeUpdatesDisabled
2424 {
2425     return _frameSizeUpdatesDisabledCount > 0;
2426 }
2427
2428 - (void)performDictionaryLookupAtCurrentMouseLocation
2429 {
2430     NSPoint thePoint = [NSEvent mouseLocation];
2431     thePoint = [[self window] convertScreenToBase:thePoint];
2432     thePoint = [self convertPoint:thePoint fromView:nil];
2433
2434     _data->_page->performDictionaryLookupAtLocation(FloatPoint(thePoint.x, thePoint.y));
2435 }
2436
2437 - (NSInteger)spellCheckerDocumentTag
2438 {
2439     if (!_data->_hasSpellCheckerDocumentTag) {
2440         _data->_spellCheckerDocumentTag = [NSSpellChecker uniqueSpellDocumentTag];
2441         _data->_hasSpellCheckerDocumentTag = YES;
2442     }
2443     return _data->_spellCheckerDocumentTag;
2444 }
2445
2446 - (void)handleCorrectionPanelResult:(NSString*)result
2447 {
2448     _data->_page->handleCorrectionPanelResult(result);
2449 }
2450
2451 @end
2452
2453 @implementation WKResponderChainSink
2454
2455 - (id)initWithResponderChain:(NSResponder *)chain
2456 {
2457     self = [super init];
2458     if (!self)
2459         return nil;
2460     _lastResponderInChain = chain;
2461     while (NSResponder *next = [_lastResponderInChain nextResponder])
2462         _lastResponderInChain = next;
2463     [_lastResponderInChain setNextResponder:self];
2464     return self;
2465 }
2466
2467 - (void)detach
2468 {
2469     [_lastResponderInChain setNextResponder:nil];
2470     _lastResponderInChain = nil;
2471 }
2472
2473 - (bool)didReceiveUnhandledCommand
2474 {
2475     return _didReceiveUnhandledCommand;
2476 }
2477
2478 - (void)noResponderFor:(SEL)selector
2479 {
2480     _didReceiveUnhandledCommand = true;
2481 }
2482
2483 - (void)doCommandBySelector:(SEL)selector
2484 {
2485     _didReceiveUnhandledCommand = true;
2486 }
2487
2488 - (BOOL)tryToPerform:(SEL)action with:(id)object
2489 {
2490     _didReceiveUnhandledCommand = true;
2491     return YES;
2492 }
2493
2494 @end