80345f72cd9df6b6d3c58d59fa8f9228105b0f9e
[WebKit.git] / 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->_inSecureInputState) {
314         DisableSecureEventInput();
315         _data->_inSecureInputState = NO;
316     }
317     _data->_page->viewStateDidChange(WebPageProxy::ViewIsFocused);
318
319     _data->_inResignFirstResponder = false;
320
321     return YES;
322 }
323
324 - (void)viewWillStartLiveResize
325 {
326     _data->_page->viewWillStartLiveResize();
327 }
328
329 - (void)viewDidEndLiveResize
330 {
331     _data->_page->viewWillEndLiveResize();
332 }
333
334 - (BOOL)isFlipped
335 {
336     return YES;
337 }
338
339 - (void)setFrame:(NSRect)rect andScrollBy:(NSSize)offset
340 {
341     ASSERT(NSEqualSizes(_data->_resizeScrollOffset, NSZeroSize));
342
343     _data->_resizeScrollOffset = offset;
344     [self setFrame:rect];
345 }
346
347 - (void)setFrameSize:(NSSize)size
348 {
349     [super setFrameSize:size];
350     
351     if (![self frameSizeUpdatesDisabled])
352         [self _setDrawingAreaSize:size];
353 }
354
355 - (void)_updateWindowAndViewFrames
356 {
357     NSWindow *window = [self window];
358     ASSERT(window);
359     
360     NSRect windowFrameInScreenCoordinates = [window frame];
361     NSRect viewFrameInWindowCoordinates = [self convertRect:[self frame] toView:nil];
362     NSPoint accessibilityPosition = [[self accessibilityAttributeValue:NSAccessibilityPositionAttribute] pointValue];
363     
364     _data->_page->windowAndViewFramesChanged(enclosingIntRect(windowFrameInScreenCoordinates), enclosingIntRect(viewFrameInWindowCoordinates), IntPoint(accessibilityPosition));
365 }
366
367 - (void)renewGState
368 {
369     // Hide the find indicator.
370     _data->_findIndicatorWindow = nullptr;
371
372     // Update the view frame.
373     if ([self window])
374         [self _updateWindowAndViewFrames];
375
376     [super renewGState];
377 }
378
379 typedef HashMap<SEL, String> SelectorNameMap;
380
381 // Map selectors into Editor command names.
382 // This is not needed for any selectors that have the same name as the Editor command.
383 static const SelectorNameMap* createSelectorExceptionMap()
384 {
385     SelectorNameMap* map = new HashMap<SEL, String>;
386     
387     map->add(@selector(insertNewlineIgnoringFieldEditor:), "InsertNewline");
388     map->add(@selector(insertParagraphSeparator:), "InsertNewline");
389     map->add(@selector(insertTabIgnoringFieldEditor:), "InsertTab");
390     map->add(@selector(pageDown:), "MovePageDown");
391     map->add(@selector(pageDownAndModifySelection:), "MovePageDownAndModifySelection");
392     map->add(@selector(pageUp:), "MovePageUp");
393     map->add(@selector(pageUpAndModifySelection:), "MovePageUpAndModifySelection");
394     map->add(@selector(scrollPageDown:), "ScrollPageForward");
395     map->add(@selector(scrollPageUp:), "ScrollPageBackward");
396     
397     return map;
398 }
399
400 static String commandNameForSelector(SEL selector)
401 {
402     // Check the exception map first.
403     static const SelectorNameMap* exceptionMap = createSelectorExceptionMap();
404     SelectorNameMap::const_iterator it = exceptionMap->find(selector);
405     if (it != exceptionMap->end())
406         return it->second;
407     
408     // Remove the trailing colon.
409     // No need to capitalize the command name since Editor command names are
410     // not case sensitive.
411     const char* selectorName = sel_getName(selector);
412     size_t selectorNameLength = strlen(selectorName);
413     if (selectorNameLength < 2 || selectorName[selectorNameLength - 1] != ':')
414         return String();
415     return String(selectorName, selectorNameLength - 1);
416 }
417
418 // Editing commands
419
420 #define WEBCORE_COMMAND(command) - (void)command:(id)sender { _data->_page->executeEditCommand(commandNameForSelector(_cmd)); }
421
422 WEBCORE_COMMAND(alignCenter)
423 WEBCORE_COMMAND(alignJustified)
424 WEBCORE_COMMAND(alignLeft)
425 WEBCORE_COMMAND(alignRight)
426 WEBCORE_COMMAND(copy)
427 WEBCORE_COMMAND(cut)
428 WEBCORE_COMMAND(delete)
429 WEBCORE_COMMAND(deleteBackward)
430 WEBCORE_COMMAND(deleteBackwardByDecomposingPreviousCharacter)
431 WEBCORE_COMMAND(deleteForward)
432 WEBCORE_COMMAND(deleteToBeginningOfLine)
433 WEBCORE_COMMAND(deleteToBeginningOfParagraph)
434 WEBCORE_COMMAND(deleteToEndOfLine)
435 WEBCORE_COMMAND(deleteToEndOfParagraph)
436 WEBCORE_COMMAND(deleteToMark)
437 WEBCORE_COMMAND(deleteWordBackward)
438 WEBCORE_COMMAND(deleteWordForward)
439 WEBCORE_COMMAND(ignoreSpelling)
440 WEBCORE_COMMAND(indent)
441 WEBCORE_COMMAND(insertBacktab)
442 WEBCORE_COMMAND(insertLineBreak)
443 WEBCORE_COMMAND(insertNewline)
444 WEBCORE_COMMAND(insertNewlineIgnoringFieldEditor)
445 WEBCORE_COMMAND(insertParagraphSeparator)
446 WEBCORE_COMMAND(insertTab)
447 WEBCORE_COMMAND(insertTabIgnoringFieldEditor)
448 WEBCORE_COMMAND(makeTextWritingDirectionLeftToRight)
449 WEBCORE_COMMAND(makeTextWritingDirectionNatural)
450 WEBCORE_COMMAND(makeTextWritingDirectionRightToLeft)
451 WEBCORE_COMMAND(moveBackward)
452 WEBCORE_COMMAND(moveBackwardAndModifySelection)
453 WEBCORE_COMMAND(moveDown)
454 WEBCORE_COMMAND(moveDownAndModifySelection)
455 WEBCORE_COMMAND(moveForward)
456 WEBCORE_COMMAND(moveForwardAndModifySelection)
457 WEBCORE_COMMAND(moveLeft)
458 WEBCORE_COMMAND(moveLeftAndModifySelection)
459 WEBCORE_COMMAND(moveParagraphBackwardAndModifySelection)
460 WEBCORE_COMMAND(moveParagraphForwardAndModifySelection)
461 WEBCORE_COMMAND(moveRight)
462 WEBCORE_COMMAND(moveRightAndModifySelection)
463 WEBCORE_COMMAND(moveToBeginningOfDocument)
464 WEBCORE_COMMAND(moveToBeginningOfDocumentAndModifySelection)
465 WEBCORE_COMMAND(moveToBeginningOfLine)
466 WEBCORE_COMMAND(moveToBeginningOfLineAndModifySelection)
467 WEBCORE_COMMAND(moveToBeginningOfParagraph)
468 WEBCORE_COMMAND(moveToBeginningOfParagraphAndModifySelection)
469 WEBCORE_COMMAND(moveToBeginningOfSentence)
470 WEBCORE_COMMAND(moveToBeginningOfSentenceAndModifySelection)
471 WEBCORE_COMMAND(moveToEndOfDocument)
472 WEBCORE_COMMAND(moveToEndOfDocumentAndModifySelection)
473 WEBCORE_COMMAND(moveToEndOfLine)
474 WEBCORE_COMMAND(moveToEndOfLineAndModifySelection)
475 WEBCORE_COMMAND(moveToEndOfParagraph)
476 WEBCORE_COMMAND(moveToEndOfParagraphAndModifySelection)
477 WEBCORE_COMMAND(moveToEndOfSentence)
478 WEBCORE_COMMAND(moveToEndOfSentenceAndModifySelection)
479 WEBCORE_COMMAND(moveToLeftEndOfLine)
480 WEBCORE_COMMAND(moveToLeftEndOfLineAndModifySelection)
481 WEBCORE_COMMAND(moveToRightEndOfLine)
482 WEBCORE_COMMAND(moveToRightEndOfLineAndModifySelection)
483 WEBCORE_COMMAND(moveUp)
484 WEBCORE_COMMAND(moveUpAndModifySelection)
485 WEBCORE_COMMAND(moveWordBackward)
486 WEBCORE_COMMAND(moveWordBackwardAndModifySelection)
487 WEBCORE_COMMAND(moveWordForward)
488 WEBCORE_COMMAND(moveWordForwardAndModifySelection)
489 WEBCORE_COMMAND(moveWordLeft)
490 WEBCORE_COMMAND(moveWordLeftAndModifySelection)
491 WEBCORE_COMMAND(moveWordRight)
492 WEBCORE_COMMAND(moveWordRightAndModifySelection)
493 WEBCORE_COMMAND(outdent)
494 WEBCORE_COMMAND(pageDown)
495 WEBCORE_COMMAND(pageDownAndModifySelection)
496 WEBCORE_COMMAND(pageUp)
497 WEBCORE_COMMAND(pageUpAndModifySelection)
498 WEBCORE_COMMAND(paste)
499 WEBCORE_COMMAND(pasteAsPlainText)
500 WEBCORE_COMMAND(scrollPageDown)
501 WEBCORE_COMMAND(scrollPageUp)
502 WEBCORE_COMMAND(scrollToBeginningOfDocument)
503 WEBCORE_COMMAND(scrollToEndOfDocument)
504 WEBCORE_COMMAND(selectAll)
505 WEBCORE_COMMAND(selectLine)
506 WEBCORE_COMMAND(selectParagraph)
507 WEBCORE_COMMAND(selectSentence)
508 WEBCORE_COMMAND(selectToMark)
509 WEBCORE_COMMAND(selectWord)
510 WEBCORE_COMMAND(setMark)
511 WEBCORE_COMMAND(subscript)
512 WEBCORE_COMMAND(superscript)
513 WEBCORE_COMMAND(swapWithMark)
514 WEBCORE_COMMAND(takeFindStringFromSelection)
515 WEBCORE_COMMAND(transpose)
516 WEBCORE_COMMAND(underline)
517 WEBCORE_COMMAND(unscript)
518 WEBCORE_COMMAND(yank)
519 WEBCORE_COMMAND(yankAndSelect)
520
521 #undef WEBCORE_COMMAND
522
523 // This method is needed to support Mac OS X services.
524
525 - (BOOL)writeSelectionToPasteboard:(NSPasteboard *)pasteboard types:(NSArray *)types
526 {
527     Vector<String> pasteboardTypes;
528     size_t numTypes = [types count];
529     for (size_t i = 0; i < numTypes; ++i)
530         pasteboardTypes.append([types objectAtIndex:i]);
531     return _data->_page->writeSelectionToPasteboard([pasteboard name], pasteboardTypes);
532 }
533
534 // This method is needed to support Mac OS X services.
535
536 - (id)validRequestorForSendType:(NSString *)sendType returnType:(NSString *)returnType
537 {
538     BOOL isValidSendType = !sendType || ([PasteboardTypes::forSelection() containsObject:sendType] && !_data->_page->editorState().selectionIsNone);
539     BOOL isValidReturnType = NO;
540     if (!returnType)
541         isValidReturnType = YES;
542     else if ([PasteboardTypes::forEditing() containsObject:returnType] && _data->_page->editorState().isContentEditable) {
543         // We can insert strings in any editable context.  We can insert other types, like images, only in rich edit contexts.
544         isValidReturnType = _data->_page->editorState().isContentRichlyEditable || [returnType isEqualToString:NSStringPboardType];
545     }
546     if (isValidSendType && isValidReturnType)
547         return self;
548     return [[self nextResponder] validRequestorForSendType:sendType returnType:returnType];
549 }
550
551 // This method is needed to support Mac OS X services.
552
553 - (BOOL)readSelectionFromPasteboard:(NSPasteboard *)pasteboard 
554 {
555     return _data->_page->readSelectionFromPasteboard([pasteboard name]);
556 }
557
558 /*
559
560 When possible, editing-related methods should be implemented in WebCore with the
561 EditorCommand mechanism and invoked via WEBCORE_COMMAND, rather than implementing
562 individual methods here with Mac-specific code.
563
564 Editing-related methods still unimplemented that are implemented in WebKit1:
565
566 - (void)capitalizeWord:(id)sender;
567 - (void)centerSelectionInVisibleArea:(id)sender;
568 - (void)changeFont:(id)sender;
569 - (void)complete:(id)sender;
570 - (void)copyFont:(id)sender;
571 - (void)lowercaseWord:(id)sender;
572 - (void)makeBaseWritingDirectionLeftToRight:(id)sender;
573 - (void)makeBaseWritingDirectionNatural:(id)sender;
574 - (void)makeBaseWritingDirectionRightToLeft:(id)sender;
575 - (void)pasteFont:(id)sender;
576 - (void)scrollLineDown:(id)sender;
577 - (void)scrollLineUp:(id)sender;
578 - (void)showGuessPanel:(id)sender;
579 - (void)uppercaseWord:(id)sender;
580
581 Some other editing-related methods still unimplemented:
582
583 - (void)changeCaseOfLetter:(id)sender;
584 - (void)copyRuler:(id)sender;
585 - (void)insertContainerBreak:(id)sender;
586 - (void)insertDoubleQuoteIgnoringSubstitution:(id)sender;
587 - (void)insertSingleQuoteIgnoringSubstitution:(id)sender;
588 - (void)pasteRuler:(id)sender;
589 - (void)toggleRuler:(id)sender;
590 - (void)transposeWords:(id)sender;
591
592 */
593
594 // Menu items validation
595
596 static NSMenuItem *menuItem(id <NSValidatedUserInterfaceItem> item)
597 {
598     if (![(NSObject *)item isKindOfClass:[NSMenuItem class]])
599         return nil;
600     return (NSMenuItem *)item;
601 }
602
603 static NSToolbarItem *toolbarItem(id <NSValidatedUserInterfaceItem> item)
604 {
605     if (![(NSObject *)item isKindOfClass:[NSToolbarItem class]])
606         return nil;
607     return (NSToolbarItem *)item;
608 }
609
610 static void validateCommandCallback(WKStringRef commandName, bool isEnabled, int32_t state, WKErrorRef error, void* context)
611 {
612     // If the process exits before the command can be validated, we'll be called back with an error.
613     if (error)
614         return;
615     
616     WKView* wkView = static_cast<WKView*>(context);
617     ASSERT(wkView);
618     
619     [wkView _setUserInterfaceItemState:nsStringFromWebCoreString(toImpl(commandName)->string()) enabled:isEnabled state:state];
620 }
621
622 - (BOOL)validateUserInterfaceItem:(id <NSValidatedUserInterfaceItem>)item
623 {
624     SEL action = [item action];
625
626     if (action == @selector(showGuessPanel:)) {
627         if (NSMenuItem *menuItem = ::menuItem(item))
628             [menuItem setTitle:contextMenuItemTagShowSpellingPanel(![[[NSSpellChecker sharedSpellChecker] spellingPanel] isVisible])];
629         return _data->_page->editorState().isContentEditable;
630     }
631
632     if (action == @selector(checkSpelling:) || action == @selector(changeSpelling:))
633         return _data->_page->editorState().isContentEditable;
634
635     if (action == @selector(toggleContinuousSpellChecking:)) {
636         bool enabled = TextChecker::isContinuousSpellCheckingAllowed();
637         bool checked = enabled && TextChecker::state().isContinuousSpellCheckingEnabled;
638         [menuItem(item) setState:checked ? NSOnState : NSOffState];
639         return enabled;
640     }
641
642     if (action == @selector(toggleGrammarChecking:)) {
643         bool checked = TextChecker::state().isGrammarCheckingEnabled;
644         [menuItem(item) setState:checked ? NSOnState : NSOffState];
645         return YES;
646     }
647
648     if (action == @selector(toggleAutomaticSpellingCorrection:)) {
649         bool checked = TextChecker::state().isAutomaticSpellingCorrectionEnabled;
650         [menuItem(item) setState:checked ? NSOnState : NSOffState];
651         return _data->_page->editorState().isContentEditable;
652     }
653
654     if (action == @selector(orderFrontSubstitutionsPanel:)) {
655         if (NSMenuItem *menuItem = ::menuItem(item))
656             [menuItem setTitle:contextMenuItemTagShowSubstitutions(![[[NSSpellChecker sharedSpellChecker] substitutionsPanel] isVisible])];
657         return _data->_page->editorState().isContentEditable;
658     }
659
660     if (action == @selector(toggleSmartInsertDelete:)) {
661         bool checked = _data->_page->isSmartInsertDeleteEnabled();
662         [menuItem(item) setState:checked ? NSOnState : NSOffState];
663         return _data->_page->editorState().isContentEditable;
664     }
665
666     if (action == @selector(toggleAutomaticQuoteSubstitution:)) {
667         bool checked = TextChecker::state().isAutomaticQuoteSubstitutionEnabled;
668         [menuItem(item) setState:checked ? NSOnState : NSOffState];
669         return _data->_page->editorState().isContentEditable;
670     }
671
672     if (action == @selector(toggleAutomaticDashSubstitution:)) {
673         bool checked = TextChecker::state().isAutomaticDashSubstitutionEnabled;
674         [menuItem(item) setState:checked ? NSOnState : NSOffState];
675         return _data->_page->editorState().isContentEditable;
676     }
677
678     if (action == @selector(toggleAutomaticLinkDetection:)) {
679         bool checked = TextChecker::state().isAutomaticLinkDetectionEnabled;
680         [menuItem(item) setState:checked ? NSOnState : NSOffState];
681         return _data->_page->editorState().isContentEditable;
682     }
683
684     if (action == @selector(toggleAutomaticTextReplacement:)) {
685         bool checked = TextChecker::state().isAutomaticTextReplacementEnabled;
686         [menuItem(item) setState:checked ? NSOnState : NSOffState];
687         return _data->_page->editorState().isContentEditable;
688     }
689
690     if (action == @selector(uppercaseWord:) || action == @selector(lowercaseWord:) || action == @selector(capitalizeWord:))
691         return _data->_page->editorState().selectionIsRange && _data->_page->editorState().isContentEditable;
692     
693     if (action == @selector(stopSpeaking:))
694         return [NSApp isSpeaking];
695
696     // Next, handle editor commands. Start by returning YES for anything that is not an editor command.
697     // Returning YES is the default thing to do in an AppKit validate method for any selector that is not recognized.
698     String commandName = commandNameForSelector([item action]);
699     if (!Editor::commandIsSupportedFromMenuOrKeyBinding(commandName))
700         return YES;
701
702     // Add this item to the vector of items for a given command that are awaiting validation.
703     pair<ValidationMap::iterator, bool> addResult = _data->_validationMap.add(commandName, ValidationVector());
704     addResult.first->second.append(item);
705     if (addResult.second) {
706         // If we are not already awaiting validation for this command, start the asynchronous validation process.
707         // FIXME: Theoretically, there is a race here; when we get the answer it might be old, from a previous time
708         // we asked for the same command; there is no guarantee the answer is still valid.
709         _data->_page->validateCommand(commandName, ValidateCommandCallback::create(self, validateCommandCallback));
710     }
711
712     // Treat as enabled until we get the result back from the web process and _setUserInterfaceItemState is called.
713     // FIXME <rdar://problem/8803459>: This means disabled items will flash enabled at first for a moment.
714     // But returning NO here would be worse; that would make keyboard commands such as command-C fail.
715     return YES;
716 }
717
718 static void speakString(WKStringRef string, WKErrorRef error, void*)
719 {
720     if (error)
721         return;
722     if (!string)
723         return;
724
725     NSString *convertedString = toImpl(string)->string();
726     [NSApp speakString:convertedString];
727 }
728
729 - (IBAction)startSpeaking:(id)sender
730 {
731     _data->_page->getSelectionOrContentsAsString(StringCallback::create(0, speakString));
732 }
733
734 - (IBAction)stopSpeaking:(id)sender
735 {
736     [NSApp stopSpeaking:sender];
737 }
738
739 - (IBAction)showGuessPanel:(id)sender
740 {
741     NSSpellChecker *checker = [NSSpellChecker sharedSpellChecker];
742     if (!checker) {
743         LOG_ERROR("No NSSpellChecker");
744         return;
745     }
746     
747     NSPanel *spellingPanel = [checker spellingPanel];
748     if ([spellingPanel isVisible]) {
749         [spellingPanel orderOut:sender];
750         return;
751     }
752     
753     _data->_page->advanceToNextMisspelling(true);
754     [spellingPanel orderFront:sender];
755 }
756
757 - (IBAction)checkSpelling:(id)sender
758 {
759     _data->_page->advanceToNextMisspelling(false);
760 }
761
762 - (void)changeSpelling:(id)sender
763 {
764     NSString *word = [[sender selectedCell] stringValue];
765
766     _data->_page->changeSpellingToWord(word);
767 }
768
769 - (IBAction)toggleContinuousSpellChecking:(id)sender
770 {
771     bool spellCheckingEnabled = !TextChecker::state().isContinuousSpellCheckingEnabled;
772     TextChecker::setContinuousSpellCheckingEnabled(spellCheckingEnabled);
773
774     _data->_page->process()->updateTextCheckerState();
775 }
776
777 - (BOOL)isGrammarCheckingEnabled
778 {
779     return TextChecker::state().isGrammarCheckingEnabled;
780 }
781
782 - (void)setGrammarCheckingEnabled:(BOOL)flag
783 {
784     if (static_cast<bool>(flag) == TextChecker::state().isGrammarCheckingEnabled)
785         return;
786     
787     TextChecker::setGrammarCheckingEnabled(flag);
788     _data->_page->process()->updateTextCheckerState();
789 }
790
791 - (IBAction)toggleGrammarChecking:(id)sender
792 {
793     bool grammarCheckingEnabled = !TextChecker::state().isGrammarCheckingEnabled;
794     TextChecker::setGrammarCheckingEnabled(grammarCheckingEnabled);
795
796     _data->_page->process()->updateTextCheckerState();
797 }
798
799 - (IBAction)toggleAutomaticSpellingCorrection:(id)sender
800 {
801     TextChecker::setAutomaticSpellingCorrectionEnabled(!TextChecker::state().isAutomaticSpellingCorrectionEnabled);
802
803     _data->_page->process()->updateTextCheckerState();
804 }
805
806 - (void)orderFrontSubstitutionsPanel:(id)sender
807 {
808     NSSpellChecker *checker = [NSSpellChecker sharedSpellChecker];
809     if (!checker) {
810         LOG_ERROR("No NSSpellChecker");
811         return;
812     }
813     
814     NSPanel *substitutionsPanel = [checker substitutionsPanel];
815     if ([substitutionsPanel isVisible]) {
816         [substitutionsPanel orderOut:sender];
817         return;
818     }
819     [substitutionsPanel orderFront:sender];
820 }
821
822 - (IBAction)toggleSmartInsertDelete:(id)sender
823 {
824     _data->_page->setSmartInsertDeleteEnabled(!_data->_page->isSmartInsertDeleteEnabled());
825 }
826
827 - (BOOL)isAutomaticQuoteSubstitutionEnabled
828 {
829     return TextChecker::state().isAutomaticQuoteSubstitutionEnabled;
830 }
831
832 - (void)setAutomaticQuoteSubstitutionEnabled:(BOOL)flag
833 {
834     if (static_cast<bool>(flag) == TextChecker::state().isAutomaticQuoteSubstitutionEnabled)
835         return;
836
837     TextChecker::setAutomaticQuoteSubstitutionEnabled(flag);
838     _data->_page->process()->updateTextCheckerState();
839 }
840
841 - (void)toggleAutomaticQuoteSubstitution:(id)sender
842 {
843     TextChecker::setAutomaticQuoteSubstitutionEnabled(!TextChecker::state().isAutomaticQuoteSubstitutionEnabled);
844     _data->_page->process()->updateTextCheckerState();
845 }
846
847 - (BOOL)isAutomaticDashSubstitutionEnabled
848 {
849     return TextChecker::state().isAutomaticDashSubstitutionEnabled;
850 }
851
852 - (void)setAutomaticDashSubstitutionEnabled:(BOOL)flag
853 {
854     if (static_cast<bool>(flag) == TextChecker::state().isAutomaticDashSubstitutionEnabled)
855         return;
856
857     TextChecker::setAutomaticDashSubstitutionEnabled(flag);
858     _data->_page->process()->updateTextCheckerState();
859 }
860
861 - (void)toggleAutomaticDashSubstitution:(id)sender
862 {
863     TextChecker::setAutomaticDashSubstitutionEnabled(!TextChecker::state().isAutomaticDashSubstitutionEnabled);
864     _data->_page->process()->updateTextCheckerState();
865 }
866
867 - (BOOL)isAutomaticLinkDetectionEnabled
868 {
869     return TextChecker::state().isAutomaticLinkDetectionEnabled;
870 }
871
872 - (void)setAutomaticLinkDetectionEnabled:(BOOL)flag
873 {
874     if (static_cast<bool>(flag) == TextChecker::state().isAutomaticLinkDetectionEnabled)
875         return;
876
877     TextChecker::setAutomaticLinkDetectionEnabled(flag);
878     _data->_page->process()->updateTextCheckerState();
879 }
880
881 - (void)toggleAutomaticLinkDetection:(id)sender
882 {
883     TextChecker::setAutomaticLinkDetectionEnabled(!TextChecker::state().isAutomaticLinkDetectionEnabled);
884     _data->_page->process()->updateTextCheckerState();
885 }
886
887 - (BOOL)isAutomaticTextReplacementEnabled
888 {
889     return TextChecker::state().isAutomaticTextReplacementEnabled;
890 }
891
892 - (void)setAutomaticTextReplacementEnabled:(BOOL)flag
893 {
894     if (static_cast<bool>(flag) == TextChecker::state().isAutomaticTextReplacementEnabled)
895         return;
896
897     TextChecker::setAutomaticTextReplacementEnabled(flag);
898     _data->_page->process()->updateTextCheckerState();
899 }
900
901 - (void)toggleAutomaticTextReplacement:(id)sender
902 {
903     TextChecker::setAutomaticTextReplacementEnabled(!TextChecker::state().isAutomaticTextReplacementEnabled);
904     _data->_page->process()->updateTextCheckerState();
905 }
906
907 - (void)uppercaseWord:(id)sender
908 {
909     _data->_page->uppercaseWord();
910 }
911
912 - (void)lowercaseWord:(id)sender
913 {
914     _data->_page->lowercaseWord();
915 }
916
917 - (void)capitalizeWord:(id)sender
918 {
919     _data->_page->capitalizeWord();
920 }
921
922 // Events
923
924 // Override this so that AppKit will send us arrow keys as key down events so we can
925 // support them via the key bindings mechanism.
926 - (BOOL)_wantsKeyDownForEvent:(NSEvent *)event
927 {
928     return YES;
929 }
930
931 - (void)_setMouseDownEvent:(NSEvent *)event
932 {
933     ASSERT(!event || [event type] == NSLeftMouseDown || [event type] == NSRightMouseDown || [event type] == NSOtherMouseDown);
934     
935     if (event == _data->_mouseDownEvent)
936         return;
937     
938     [_data->_mouseDownEvent release];
939     _data->_mouseDownEvent = [event retain];
940 }
941
942 #define NATIVE_MOUSE_EVENT_HANDLER(Selector) \
943     - (void)Selector:(NSEvent *)theEvent \
944     { \
945         if ([[self inputContext] handleEvent:theEvent]) { \
946             LOG(TextInput, "%s was handled by text input context", String(#Selector).substring(0, String(#Selector).find("Internal")).ascii().data()); \
947             return; \
948         } \
949         NativeWebMouseEvent webEvent(theEvent, self); \
950         _data->_page->handleMouseEvent(webEvent); \
951     }
952
953 NATIVE_MOUSE_EVENT_HANDLER(mouseEntered)
954 NATIVE_MOUSE_EVENT_HANDLER(mouseExited)
955 NATIVE_MOUSE_EVENT_HANDLER(mouseMovedInternal)
956 NATIVE_MOUSE_EVENT_HANDLER(mouseDownInternal)
957 NATIVE_MOUSE_EVENT_HANDLER(mouseUpInternal)
958 NATIVE_MOUSE_EVENT_HANDLER(mouseDraggedInternal)
959 NATIVE_MOUSE_EVENT_HANDLER(otherMouseDown)
960 NATIVE_MOUSE_EVENT_HANDLER(otherMouseDragged)
961 NATIVE_MOUSE_EVENT_HANDLER(otherMouseMoved)
962 NATIVE_MOUSE_EVENT_HANDLER(otherMouseUp)
963 NATIVE_MOUSE_EVENT_HANDLER(rightMouseDown)
964 NATIVE_MOUSE_EVENT_HANDLER(rightMouseDragged)
965 NATIVE_MOUSE_EVENT_HANDLER(rightMouseUp)
966
967 #undef NATIVE_MOUSE_EVENT_HANDLER
968
969 #define EVENT_HANDLER(Selector, Type) \
970     - (void)Selector:(NSEvent *)theEvent \
971     { \
972         Web##Type##Event webEvent = WebEventFactory::createWeb##Type##Event(theEvent, self); \
973         _data->_page->handle##Type##Event(webEvent); \
974     }
975
976 EVENT_HANDLER(scrollWheel, Wheel)
977
978 #undef EVENT_HANDLER
979
980 - (void)mouseMoved:(NSEvent *)event
981 {
982     // When a view is first responder, it gets mouse moved events even when the mouse is outside its visible rect.
983     if (self == [[self window] firstResponder] && !NSPointInRect([self convertPoint:[event locationInWindow] fromView:nil], [self visibleRect]))
984         return;
985
986     [self mouseMovedInternal:event];
987 }
988
989 - (void)mouseDown:(NSEvent *)event
990 {
991     [self _setMouseDownEvent:event];
992     _data->_ignoringMouseDraggedEvents = NO;
993     _data->_dragHasStarted = NO;
994     [self mouseDownInternal:event];
995 }
996
997 - (void)mouseUp:(NSEvent *)event
998 {
999     [self _setMouseDownEvent:nil];
1000     [self mouseUpInternal:event];
1001 }
1002
1003 - (void)mouseDragged:(NSEvent *)event
1004 {
1005     if (_data->_ignoringMouseDraggedEvents)
1006         return;
1007     [self mouseDraggedInternal:event];
1008 }
1009
1010 - (BOOL)acceptsFirstMouse:(NSEvent *)event
1011 {
1012     // There's a chance that responding to this event will run a nested event loop, and
1013     // fetching a new event might release the old one. Retaining and then autoreleasing
1014     // the current event prevents that from causing a problem inside WebKit or AppKit code.
1015     [[event retain] autorelease];
1016     
1017     if (![self hitTest:[event locationInWindow]])
1018         return NO;
1019     
1020     [self _setMouseDownEvent:event];
1021     bool result = _data->_page->acceptsFirstMouse([event eventNumber], WebEventFactory::createWebMouseEvent(event, self));
1022     [self _setMouseDownEvent:nil];
1023     return result;
1024 }
1025
1026 - (BOOL)shouldDelayWindowOrderingForEvent:(NSEvent *)event
1027 {
1028     // If this is the active window or we don't have a range selection, there is no need to perform additional checks
1029     // and we can avoid making a synchronous call to the WebProcess.
1030     if ([[self window] isKeyWindow] || _data->_page->editorState().selectionIsNone || !_data->_page->editorState().selectionIsRange)
1031         return NO;
1032
1033     // There's a chance that responding to this event will run a nested event loop, and
1034     // fetching a new event might release the old one. Retaining and then autoreleasing
1035     // the current event prevents that from causing a problem inside WebKit or AppKit code.
1036     [[event retain] autorelease];
1037     
1038     if (![self hitTest:[event locationInWindow]])
1039         return NO;
1040     
1041     [self _setMouseDownEvent:event];
1042     bool result = _data->_page->shouldDelayWindowOrderingForEvent(WebEventFactory::createWebMouseEvent(event, self));
1043     [self _setMouseDownEvent:nil];
1044     return result;
1045 }
1046
1047 #if ENABLE(GESTURE_EVENTS)
1048
1049 static const short kIOHIDEventTypeScroll = 6;
1050
1051 - (void)shortCircuitedEndGestureWithEvent:(NSEvent *)event
1052 {
1053     if ([event subtype] != kIOHIDEventTypeScroll)
1054         return;
1055
1056     WebGestureEvent webEvent = WebEventFactory::createWebGestureEvent(event, self);
1057     _data->_page->handleGestureEvent(webEvent);
1058
1059     if (_data->_endGestureMonitor) {
1060         [NSEvent removeMonitor:_data->_endGestureMonitor];
1061         _data->_endGestureMonitor = nil;
1062     }
1063 }
1064
1065 - (void)beginGestureWithEvent:(NSEvent *)event
1066 {
1067     if ([event subtype] != kIOHIDEventTypeScroll)
1068         return;
1069
1070     WebGestureEvent webEvent = WebEventFactory::createWebGestureEvent(event, self);
1071     _data->_page->handleGestureEvent(webEvent);
1072
1073     if (!_data->_endGestureMonitor) {
1074         _data->_endGestureMonitor = [NSEvent addLocalMonitorForEventsMatchingMask:NSEventMaskEndGesture handler:^(NSEvent *blockEvent) {
1075             [self shortCircuitedEndGestureWithEvent:blockEvent];
1076             return blockEvent;
1077         }];
1078     }
1079 }
1080 #endif
1081
1082 - (void)doCommandBySelector:(SEL)selector
1083 {
1084     LOG(TextInput, "doCommandBySelector:\"%s\"", sel_getName(selector));
1085
1086     WKViewInterpretKeyEventsParameters* parameters = _data->_interpretKeyEventsParameters;
1087     if (parameters)
1088         parameters->consumedByIM = false;
1089
1090     // As in insertText:replacementRange:, we assume that the call comes from an input method if there is marked text.
1091     bool isFromInputMethod = _data->_page->editorState().hasComposition;
1092
1093     if (parameters && !isFromInputMethod)
1094         parameters->commands->append(KeypressCommand(NSStringFromSelector(selector)));
1095     else {
1096         // FIXME: Send the command to Editor synchronously and only send it along the
1097         // responder chain if it's a selector that does not correspond to an editing command.
1098         [super doCommandBySelector:selector];
1099     }
1100 }
1101
1102 - (void)insertText:(id)string
1103 {
1104     // Unlike and NSTextInputClient variant with replacementRange, this NSResponder method is called when there is no input context,
1105     // so text input processing isn't performed. We are not going to actually insert any text in that case, but saving an insertText
1106     // command ensures that a keypress event is dispatched as appropriate.
1107     [self insertText:string replacementRange:NSMakeRange(NSNotFound, 0)];
1108 }
1109
1110 - (void)insertText:(id)string replacementRange:(NSRange)replacementRange
1111 {
1112     BOOL isAttributedString = [string isKindOfClass:[NSAttributedString class]];
1113     ASSERT(isAttributedString || [string isKindOfClass:[NSString class]]);
1114
1115     if (replacementRange.location != NSNotFound)
1116         LOG(TextInput, "insertText:\"%@\" replacementRange:(%u, %u)", isAttributedString ? [string string] : string, replacementRange.location, replacementRange.length);
1117     else
1118         LOG(TextInput, "insertText:\"%@\"", isAttributedString ? [string string] : string);
1119     WKViewInterpretKeyEventsParameters* parameters = _data->_interpretKeyEventsParameters;
1120     if (parameters)
1121         parameters->consumedByIM = false;
1122
1123     NSString *text;
1124     bool isFromInputMethod = _data->_page->editorState().hasComposition;
1125
1126     if (isAttributedString) {
1127         // FIXME: We ignore most attributes from the string, so for example inserting from Character Palette loses font and glyph variation data.
1128         text = [string string];
1129     } else
1130         text = string;
1131
1132     // insertText can be called for several reasons:
1133     // - If it's from normal key event processing (including key bindings), we may need to save the action to perform it later.
1134     // - 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.
1135     // 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.
1136     // - If it's sent outside of keyboard event processing (e.g. from Character Viewer, or when confirming an inline input area with a mouse),
1137     // then we also execute it immediately, as there will be no other chance.
1138     if (parameters && !isFromInputMethod) {
1139         ASSERT(replacementRange.location == NSNotFound);
1140         parameters->commands->append(KeypressCommand("insertText:", text));
1141         return;
1142     }
1143
1144     String eventText = text;
1145     eventText.replace(NSBackTabCharacter, NSTabCharacter); // same thing is done in KeyEventMac.mm in WebCore
1146     bool eventHandled = _data->_page->insertText(eventText, replacementRange.location, NSMaxRange(replacementRange));
1147
1148     if (parameters)
1149         parameters->eventInterpretationHadSideEffects |= eventHandled;
1150 }
1151
1152 - (BOOL)_handleStyleKeyEquivalent:(NSEvent *)event
1153 {
1154     if (!_data->_page->editorState().isContentEditable)
1155         return NO;
1156
1157     if (([event modifierFlags] & NSDeviceIndependentModifierFlagsMask) != NSCommandKeyMask)
1158         return NO;
1159     
1160     // Here we special case cmd+b and cmd+i but not cmd+u, for historic reason.
1161     // This should not be changed, since it could break some Mac applications that
1162     // rely on this inherent behavior.
1163     // See https://bugs.webkit.org/show_bug.cgi?id=24943
1164     
1165     NSString *string = [event characters];
1166     if ([string caseInsensitiveCompare:@"b"] == NSOrderedSame) {
1167         _data->_page->executeEditCommand("ToggleBold");
1168         return YES;
1169     }
1170     if ([string caseInsensitiveCompare:@"i"] == NSOrderedSame) {
1171         _data->_page->executeEditCommand("ToggleItalic");
1172         return YES;
1173     }
1174     
1175     return NO;
1176 }
1177
1178 - (BOOL)performKeyEquivalent:(NSEvent *)event
1179 {
1180     // There's a chance that responding to this event will run a nested event loop, and
1181     // fetching a new event might release the old one. Retaining and then autoreleasing
1182     // the current event prevents that from causing a problem inside WebKit or AppKit code.
1183     [[event retain] autorelease];
1184     
1185     BOOL eventWasSentToWebCore = (_data->_keyDownEventBeingResent == event);
1186
1187     // Pass key combos through WebCore if there is a key binding available for
1188     // this event. This lets web pages have a crack at intercepting key-modified keypresses.
1189     // But don't do it if we have already handled the event.
1190     // Pressing Esc results in a fake event being sent - don't pass it to WebCore.
1191     if (!eventWasSentToWebCore && event == [NSApp currentEvent] && self == [[self window] firstResponder]) {
1192         _data->_page->handleKeyboardEvent(NativeWebKeyboardEvent(event, self));
1193         return YES;
1194     }
1195     
1196     return [self _handleStyleKeyEquivalent:event] || [super performKeyEquivalent:event];
1197 }
1198
1199 - (void)keyUp:(NSEvent *)theEvent
1200 {
1201     _data->_page->handleKeyboardEvent(NativeWebKeyboardEvent(theEvent, self));
1202 }
1203
1204 - (void)keyDown:(NSEvent *)theEvent
1205 {
1206     // There's a chance that responding to this event will run a nested event loop, and
1207     // fetching a new event might release the old one. Retaining and then autoreleasing
1208     // the current event prevents that from causing a problem inside WebKit or AppKit code.
1209     [[theEvent retain] autorelease];
1210
1211     if (_data->_pluginComplexTextInputIdentifier) {
1212         // Try feeding the keyboard event directly to the plug-in.
1213         NSString *string = nil;
1214         if ([[WKTextInputWindowController sharedTextInputWindowController] interpretKeyEvent:theEvent string:&string]) {
1215             if (string)
1216                 _data->_page->sendComplexTextInputToPlugin(_data->_pluginComplexTextInputIdentifier, string);
1217             return;
1218         }
1219     }
1220
1221     // We could be receiving a key down from AppKit if we have re-sent an event
1222     // that maps to an action that is currently unavailable (for example a copy when
1223     // there is no range selection).
1224     // If this is the case we should ignore the key down.
1225     if (_data->_keyDownEventBeingResent == theEvent) {
1226         [super keyDown:theEvent];
1227         return;
1228     }
1229     _data->_page->handleKeyboardEvent(NativeWebKeyboardEvent(theEvent, self));
1230 }
1231
1232 - (void)flagsChanged:(NSEvent *)theEvent
1233 {
1234     // There's a chance that responding to this event will run a nested event loop, and
1235     // fetching a new event might release the old one. Retaining and then autoreleasing
1236     // the current event prevents that from causing a problem inside WebKit or AppKit code.
1237     [[theEvent retain] autorelease];
1238
1239     unsigned short keyCode = [theEvent keyCode];
1240
1241     // Don't make an event from the num lock and function keys
1242     if (!keyCode || keyCode == 10 || keyCode == 63)
1243         return;
1244
1245     _data->_page->handleKeyboardEvent(NativeWebKeyboardEvent(theEvent, self));
1246 }
1247
1248 - (void)_executeSavedKeypressCommands
1249 {
1250     WKViewInterpretKeyEventsParameters* parameters = _data->_interpretKeyEventsParameters;
1251     if (!parameters || parameters->commands->isEmpty())
1252         return;
1253
1254     // We could be called again if the execution of one command triggers a call to selectedRange.
1255     // In this case, the state is up to date, and we don't need to execute any more saved commands to return a result.
1256     if (parameters->executingSavedKeypressCommands)
1257         return;
1258
1259     parameters->executingSavedKeypressCommands = true;
1260     parameters->eventInterpretationHadSideEffects |= _data->_page->executeKeypressCommands(*parameters->commands);
1261     parameters->commands->clear();
1262     parameters->executingSavedKeypressCommands = false;
1263 }
1264
1265 - (NSTextInputContext *)inputContext
1266 {
1267     WKViewInterpretKeyEventsParameters* parameters = _data->_interpretKeyEventsParameters;
1268
1269     if (_data->_pluginComplexTextInputIdentifier && !parameters)
1270         return [[WKTextInputWindowController sharedTextInputWindowController] inputContext];
1271
1272     // Disable text input machinery when in non-editable content. An invisible inline input area affects performance, and can prevent Expose from working.
1273     if (!_data->_page->editorState().isContentEditable)
1274         return nil;
1275
1276     return [super inputContext];
1277 }
1278
1279 - (NSRange)selectedRange
1280 {
1281     [self _executeSavedKeypressCommands];
1282
1283     uint64_t selectionStart;
1284     uint64_t selectionLength;
1285     _data->_page->getSelectedRange(selectionStart, selectionLength);
1286
1287     NSRange result = NSMakeRange(selectionStart, selectionLength);
1288     if (result.location == NSNotFound)
1289         LOG(TextInput, "selectedRange -> (NSNotFound, %u)", result.length);
1290     else
1291         LOG(TextInput, "selectedRange -> (%u, %u)", result.location, result.length);
1292
1293     return result;
1294 }
1295
1296 - (BOOL)hasMarkedText
1297 {
1298     WKViewInterpretKeyEventsParameters* parameters = _data->_interpretKeyEventsParameters;
1299
1300     BOOL result;
1301     if (parameters) {
1302         result = _data->_page->editorState().hasComposition;
1303         if (result) {
1304             // A saved command can confirm a composition, but it cannot start a new one.
1305             [self _executeSavedKeypressCommands];
1306             result = _data->_page->editorState().hasComposition;
1307         }
1308     } else {
1309         uint64_t location;
1310         uint64_t length;
1311         _data->_page->getMarkedRange(location, length);
1312         result = location != NSNotFound;
1313     }
1314
1315     LOG(TextInput, "hasMarkedText -> %u", result);
1316     return result;
1317 }
1318
1319 - (void)unmarkText
1320 {
1321     [self _executeSavedKeypressCommands];
1322
1323     LOG(TextInput, "unmarkText");
1324
1325     // Use pointer to get parameters passed to us by the caller of interpretKeyEvents.
1326     WKViewInterpretKeyEventsParameters* parameters = _data->_interpretKeyEventsParameters;
1327
1328     if (parameters) {
1329         parameters->eventInterpretationHadSideEffects = true;
1330         parameters->consumedByIM = false;
1331     }
1332
1333     _data->_page->confirmComposition();
1334 }
1335
1336 - (NSArray *)validAttributesForMarkedText
1337 {
1338     static NSArray *validAttributes;
1339     if (!validAttributes) {
1340         validAttributes = [[NSArray alloc] initWithObjects:
1341                            NSUnderlineStyleAttributeName, NSUnderlineColorAttributeName,
1342                            NSMarkedClauseSegmentAttributeName, nil];
1343         // NSText also supports the following attributes, but it's
1344         // hard to tell which are really required for text input to
1345         // work well; I have not seen any input method make use of them yet.
1346         //     NSFontAttributeName, NSForegroundColorAttributeName,
1347         //     NSBackgroundColorAttributeName, NSLanguageAttributeName.
1348         CFRetain(validAttributes);
1349     }
1350     LOG(TextInput, "validAttributesForMarkedText -> (...)");
1351     return validAttributes;
1352 }
1353
1354 static void extractUnderlines(NSAttributedString *string, Vector<CompositionUnderline>& result)
1355 {
1356     int length = [[string string] length];
1357     
1358     int i = 0;
1359     while (i < length) {
1360         NSRange range;
1361         NSDictionary *attrs = [string attributesAtIndex:i longestEffectiveRange:&range inRange:NSMakeRange(i, length - i)];
1362         
1363         if (NSNumber *style = [attrs objectForKey:NSUnderlineStyleAttributeName]) {
1364             Color color = Color::black;
1365             if (NSColor *colorAttr = [attrs objectForKey:NSUnderlineColorAttributeName])
1366                 color = colorFromNSColor([colorAttr colorUsingColorSpaceName:NSDeviceRGBColorSpace]);
1367             result.append(CompositionUnderline(range.location, NSMaxRange(range), color, [style intValue] > 1));
1368         }
1369         
1370         i = range.location + range.length;
1371     }
1372 }
1373
1374 - (void)setMarkedText:(id)string selectedRange:(NSRange)newSelRange replacementRange:(NSRange)replacementRange
1375 {
1376     [self _executeSavedKeypressCommands];
1377
1378     BOOL isAttributedString = [string isKindOfClass:[NSAttributedString class]];
1379     ASSERT(isAttributedString || [string isKindOfClass:[NSString class]]);
1380
1381     LOG(TextInput, "setMarkedText:\"%@\" selectedRange:(%u, %u)", isAttributedString ? [string string] : string, newSelRange.location, newSelRange.length);
1382
1383     // Use pointer to get parameters passed to us by the caller of interpretKeyEvents.
1384     WKViewInterpretKeyEventsParameters* parameters = _data->_interpretKeyEventsParameters;
1385
1386     if (parameters) {
1387         parameters->eventInterpretationHadSideEffects = true;
1388         parameters->consumedByIM = false;
1389     }
1390     
1391     Vector<CompositionUnderline> underlines;
1392     NSString *text;
1393
1394     if (isAttributedString) {
1395         // FIXME: We ignore most attributes from the string, so an input method cannot specify e.g. a font or a glyph variation.
1396         text = [string string];
1397         extractUnderlines(string, underlines);
1398     } else
1399         text = string;
1400
1401     if (_data->_page->editorState().isInPasswordField) {
1402         // In password fields, we only allow ASCII dead keys, and don't allow inline input, matching NSSecureTextInputField.
1403         // Allowing ASCII dead keys is necessary to enable full Roman input when using a Vietnamese keyboard.
1404         ASSERT(!_data->_page->editorState().hasComposition);
1405         [[super inputContext] discardMarkedText]; // Inform the input method that we won't have an inline input area despite having been asked to.
1406         if ([text length] == 1 && [[text decomposedStringWithCanonicalMapping] characterAtIndex:0] < 0x80) {
1407             _data->_page->insertText(text, replacementRange.location, NSMaxRange(replacementRange));
1408         } else
1409             NSBeep();
1410         return;
1411     }
1412
1413     _data->_page->setComposition(text, underlines, newSelRange.location, NSMaxRange(newSelRange), replacementRange.location, NSMaxRange(replacementRange));
1414 }
1415
1416 - (NSRange)markedRange
1417 {
1418     [self _executeSavedKeypressCommands];
1419
1420     uint64_t location;
1421     uint64_t length;
1422     _data->_page->getMarkedRange(location, length);
1423
1424     LOG(TextInput, "markedRange -> (%u, %u)", location, length);
1425     return NSMakeRange(location, length);
1426 }
1427
1428 - (NSAttributedString *)attributedSubstringForProposedRange:(NSRange)nsRange actualRange:(NSRangePointer)actualRange
1429 {
1430     [self _executeSavedKeypressCommands];
1431
1432     if (!_data->_page->editorState().isContentEditable) {
1433         LOG(TextInput, "attributedSubstringFromRange:(%u, %u) -> nil", nsRange.location, nsRange.length);
1434         return nil;
1435     }
1436
1437     if (_data->_page->editorState().isInPasswordField)
1438         return nil;
1439
1440     AttributedString result;
1441     _data->_page->getAttributedSubstringFromRange(nsRange.location, NSMaxRange(nsRange), result);
1442
1443     if (actualRange)
1444         *actualRange = nsRange;
1445
1446     LOG(TextInput, "attributedSubstringFromRange:(%u, %u) -> \"%@\"", nsRange.location, nsRange.length, [result.string.get() string]);
1447     return [[result.string.get() retain] autorelease];
1448 }
1449
1450 - (NSUInteger)characterIndexForPoint:(NSPoint)thePoint
1451 {
1452     [self _executeSavedKeypressCommands];
1453
1454     NSWindow *window = [self window];
1455     
1456     if (window)
1457         thePoint = [window convertScreenToBase:thePoint];
1458     thePoint = [self convertPoint:thePoint fromView:nil];  // the point is relative to the main frame 
1459     
1460     uint64_t result = _data->_page->characterIndexForPoint(IntPoint(thePoint));
1461     LOG(TextInput, "characterIndexForPoint:(%f, %f) -> %u", thePoint.x, thePoint.y, result);
1462     return result;
1463 }
1464
1465 - (NSRect)firstRectForCharacterRange:(NSRange)theRange actualRange:(NSRangePointer)actualRange
1466
1467     [self _executeSavedKeypressCommands];
1468
1469     // Just to match NSTextView's behavior. Regression tests cannot detect this;
1470     // to reproduce, use a test application from http://bugs.webkit.org/show_bug.cgi?id=4682
1471     // (type something; try ranges (1, -1) and (2, -1).
1472     if ((theRange.location + theRange.length < theRange.location) && (theRange.location + theRange.length != 0))
1473         theRange.length = 0;
1474     
1475     NSRect resultRect = _data->_page->firstRectForCharacterRange(theRange.location, theRange.length);
1476     resultRect = [self convertRect:resultRect toView:nil];
1477     
1478     NSWindow *window = [self window];
1479     if (window)
1480         resultRect.origin = [window convertBaseToScreen:resultRect.origin];
1481
1482     if (actualRange)
1483         *actualRange = theRange;
1484
1485     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);
1486     return resultRect;
1487 }
1488
1489 - (void)draggedImage:(NSImage *)anImage endedAt:(NSPoint)aPoint operation:(NSDragOperation)operation
1490 {
1491     NSPoint windowImageLoc = [[self window] convertScreenToBase:aPoint];
1492     NSPoint windowMouseLoc = windowImageLoc;
1493    
1494     // Prevent queued mouseDragged events from coming after the drag and fake mouseUp event.
1495     _data->_ignoringMouseDraggedEvents = YES;
1496     
1497     _data->_page->dragEnded(IntPoint(windowMouseLoc), globalPoint(windowMouseLoc, [self window]), operation);
1498 }
1499
1500 - (DragApplicationFlags)applicationFlags:(id <NSDraggingInfo>)draggingInfo
1501 {
1502     uint32_t flags = 0;
1503     if ([NSApp modalWindow])
1504         flags = DragApplicationIsModal;
1505     if ([[self window] attachedSheet])
1506         flags |= DragApplicationHasAttachedSheet;
1507     if ([draggingInfo draggingSource] == self)
1508         flags |= DragApplicationIsSource;
1509     if ([[NSApp currentEvent] modifierFlags] & NSAlternateKeyMask)
1510         flags |= DragApplicationIsCopyKeyDown;
1511     return static_cast<DragApplicationFlags>(flags);
1512 }
1513
1514 - (NSDragOperation)draggingEntered:(id <NSDraggingInfo>)draggingInfo
1515 {
1516     IntPoint client([self convertPoint:[draggingInfo draggingLocation] fromView:nil]);
1517     IntPoint global(globalPoint([draggingInfo draggingLocation], [self window]));
1518     DragData dragData(draggingInfo, client, global, static_cast<DragOperation>([draggingInfo draggingSourceOperationMask]), [self applicationFlags:draggingInfo]);
1519
1520     _data->_page->resetDragOperation();
1521     _data->_page->dragEntered(&dragData, [[draggingInfo draggingPasteboard] name]);
1522     return NSDragOperationCopy;
1523 }
1524
1525 - (NSDragOperation)draggingUpdated:(id <NSDraggingInfo>)draggingInfo
1526 {
1527     IntPoint client([self convertPoint:[draggingInfo draggingLocation] fromView:nil]);
1528     IntPoint global(globalPoint([draggingInfo draggingLocation], [self window]));
1529     DragData dragData(draggingInfo, client, global, static_cast<DragOperation>([draggingInfo draggingSourceOperationMask]), [self applicationFlags:draggingInfo]);
1530     _data->_page->dragUpdated(&dragData, [[draggingInfo draggingPasteboard] name]);
1531     return _data->_page->dragOperation();
1532 }
1533
1534 - (void)draggingExited:(id <NSDraggingInfo>)draggingInfo
1535 {
1536     IntPoint client([self convertPoint:[draggingInfo draggingLocation] fromView:nil]);
1537     IntPoint global(globalPoint([draggingInfo draggingLocation], [self window]));
1538     DragData dragData(draggingInfo, client, global, static_cast<DragOperation>([draggingInfo draggingSourceOperationMask]), [self applicationFlags:draggingInfo]);
1539     _data->_page->dragExited(&dragData, [[draggingInfo draggingPasteboard] name]);
1540     _data->_page->resetDragOperation();
1541 }
1542
1543 - (BOOL)prepareForDragOperation:(id <NSDraggingInfo>)draggingInfo
1544 {
1545     return YES;
1546 }
1547
1548 // FIXME: This code is more or less copied from Pasteboard::getBestURL.
1549 // It would be nice to be able to share the code somehow.
1550 static void maybeCreateSandboxExtensionFromPasteboard(NSPasteboard *pasteboard, SandboxExtension::Handle& sandboxExtensionHandle)
1551 {
1552     NSArray *types = [pasteboard types];
1553     if (![types containsObject:NSFilenamesPboardType])
1554         return;
1555
1556     NSArray *files = [pasteboard propertyListForType:NSFilenamesPboardType];
1557     if ([files count] != 1)
1558         return;
1559
1560     NSString *file = [files objectAtIndex:0];
1561     BOOL isDirectory;
1562     if (![[NSFileManager defaultManager] fileExistsAtPath:file isDirectory:&isDirectory])
1563         return;
1564
1565     if (isDirectory)
1566         return;
1567
1568     SandboxExtension::createHandle("/", SandboxExtension::ReadOnly, sandboxExtensionHandle);
1569 }
1570
1571 - (BOOL)performDragOperation:(id <NSDraggingInfo>)draggingInfo
1572 {
1573     IntPoint client([self convertPoint:[draggingInfo draggingLocation] fromView:nil]);
1574     IntPoint global(globalPoint([draggingInfo draggingLocation], [self window]));
1575     DragData dragData(draggingInfo, client, global, static_cast<DragOperation>([draggingInfo draggingSourceOperationMask]), [self applicationFlags:draggingInfo]);
1576
1577     SandboxExtension::Handle sandboxExtensionHandle;
1578     maybeCreateSandboxExtensionFromPasteboard([draggingInfo draggingPasteboard], sandboxExtensionHandle);
1579
1580     _data->_page->performDrag(&dragData, [[draggingInfo draggingPasteboard] name], sandboxExtensionHandle);
1581
1582     return YES;
1583 }
1584
1585 // This code is needed to support drag and drop when the drag types cannot be matched.
1586 // This is the case for elements that do not place content
1587 // in the drag pasteboard automatically when the drag start (i.e. dragging a DIV element).
1588 - (NSView *)_hitTest:(NSPoint *)point dragTypes:(NSSet *)types
1589 {
1590     if ([[self superview] mouse:*point inRect:[self frame]])
1591         return self;
1592     return nil;
1593 }
1594
1595 - (void)_updateWindowVisibility
1596 {
1597     _data->_page->updateWindowIsVisible(![[self window] isMiniaturized]);
1598 }
1599
1600 - (BOOL)_ownsWindowGrowBox
1601 {
1602     NSWindow* window = [self window];
1603     if (!window)
1604         return NO;
1605
1606     NSView *superview = [self superview];
1607     if (!superview)
1608         return NO;
1609
1610     NSRect growBoxRect = [window _growBoxRect];
1611     if (NSIsEmptyRect(growBoxRect))
1612         return NO;
1613
1614     NSRect visibleRect = [self visibleRect];
1615     if (NSIsEmptyRect(visibleRect))
1616         return NO;
1617
1618     NSRect visibleRectInWindowCoords = [self convertRect:visibleRect toView:nil];
1619     if (!NSIntersectsRect(growBoxRect, visibleRectInWindowCoords))
1620         return NO;
1621
1622     return YES;
1623 }
1624
1625 - (BOOL)_updateGrowBoxForWindowFrameChange
1626 {
1627     // Temporarily enable the resize indicator to make a the _ownsWindowGrowBox calculation work.
1628     BOOL wasShowingIndicator = [[self window] showsResizeIndicator];
1629     if (!wasShowingIndicator)
1630         [[self window] setShowsResizeIndicator:YES];
1631
1632     BOOL ownsGrowBox = [self _ownsWindowGrowBox];
1633     _data->_page->setWindowResizerSize(ownsGrowBox ? enclosingIntRect([[self window] _growBoxRect]).size() : IntSize());
1634
1635     if (ownsGrowBox)
1636         [[self window] _setShowOpaqueGrowBoxForOwner:(_data->_page->hasHorizontalScrollbar() || _data->_page->hasVerticalScrollbar() ? self : nil)];
1637     else
1638         [[self window] _setShowOpaqueGrowBoxForOwner:nil];
1639
1640     // Once WebCore can draw the window resizer, this should read:
1641     // if (wasShowingIndicator)
1642     //     [[self window] setShowsResizeIndicator:!ownsGrowBox];
1643     if (!wasShowingIndicator)
1644         [[self window] setShowsResizeIndicator:NO];
1645
1646     return ownsGrowBox;
1647 }
1648
1649 - (void)addWindowObserversForWindow:(NSWindow *)window
1650 {
1651     if (window) {
1652         [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(_windowDidBecomeKey:)
1653                                                      name:NSWindowDidBecomeKeyNotification object:nil];
1654         [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(_windowDidResignKey:)
1655                                                      name:NSWindowDidResignKeyNotification object:nil];
1656         [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(_windowDidMiniaturize:) 
1657                                                      name:NSWindowDidMiniaturizeNotification object:window];
1658         [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(_windowDidDeminiaturize:)
1659                                                      name:NSWindowDidDeminiaturizeNotification object:window];
1660         [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(_windowFrameDidChange:)
1661                                                      name:NSWindowDidMoveNotification object:window];
1662         [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(_windowFrameDidChange:) 
1663                                                      name:NSWindowDidResizeNotification object:window];
1664         [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(_windowDidOrderOffScreen:) 
1665                                                      name:@"NSWindowDidOrderOffScreenNotification" object:window];
1666         [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(_windowDidOrderOnScreen:) 
1667                                                      name:@"_NSWindowDidBecomeVisible" object:window];
1668     }
1669 }
1670
1671 - (void)removeWindowObservers
1672 {
1673     NSWindow *window = [self window];
1674     if (!window)
1675         return;
1676
1677     [[NSNotificationCenter defaultCenter] removeObserver:self name:NSWindowDidBecomeKeyNotification object:nil];
1678     [[NSNotificationCenter defaultCenter] removeObserver:self name:NSWindowDidResignKeyNotification object:nil];
1679     [[NSNotificationCenter defaultCenter] removeObserver:self name:NSWindowDidMiniaturizeNotification object:window];
1680     [[NSNotificationCenter defaultCenter] removeObserver:self name:NSWindowDidDeminiaturizeNotification object:window];
1681     [[NSNotificationCenter defaultCenter] removeObserver:self name:NSWindowDidMoveNotification object:window];
1682     [[NSNotificationCenter defaultCenter] removeObserver:self name:NSWindowDidResizeNotification object:window];
1683     [[NSNotificationCenter defaultCenter] removeObserver:self name:@"NSWindowDidOrderOffScreenNotification" object:window];
1684     [[NSNotificationCenter defaultCenter] removeObserver:self name:@"_NSWindowDidBecomeVisible" object:window];
1685 }
1686
1687 - (void)viewWillMoveToWindow:(NSWindow *)window
1688 {
1689     NSWindow *currentWindow = [self window];
1690     if (window == currentWindow)
1691         return;
1692     
1693     [self removeWindowObservers];
1694     [self addWindowObserversForWindow:window];
1695     
1696     if ([currentWindow _growBoxOwner] == self)
1697         [currentWindow _setShowOpaqueGrowBoxForOwner:nil];
1698 }
1699
1700 - (void)viewDidMoveToWindow
1701 {
1702     // We want to make sure to update the active state while hidden, so if the view is about to become visible, we
1703     // update the active state first and then make it visible. If the view is about to be hidden, we hide it first and then
1704     // update the active state.
1705     if ([self window]) {
1706         _data->_page->viewStateDidChange(WebPageProxy::ViewWindowIsActive);
1707         _data->_page->viewStateDidChange(WebPageProxy::ViewIsVisible | WebPageProxy::ViewIsInWindow);
1708         [self _updateWindowVisibility];
1709         [self _updateWindowAndViewFrames];
1710         
1711         // Initialize remote accessibility when the window connection has been established.
1712 #if !defined(BUILDING_ON_SNOW_LEOPARD)
1713         NSData *remoteElementToken = WKAXRemoteTokenForElement(self);
1714         NSData *remoteWindowToken = WKAXRemoteTokenForElement([self accessibilityAttributeValue:NSAccessibilityWindowAttribute]);
1715         CoreIPC::DataReference elementToken = CoreIPC::DataReference(reinterpret_cast<const uint8_t*>([remoteElementToken bytes]), [remoteElementToken length]);
1716         CoreIPC::DataReference windowToken = CoreIPC::DataReference(reinterpret_cast<const uint8_t*>([remoteWindowToken bytes]), [remoteWindowToken length]);
1717         _data->_page->registerUIProcessAccessibilityTokens(elementToken, windowToken);
1718 #endif    
1719             
1720     } else {
1721         _data->_page->viewStateDidChange(WebPageProxy::ViewIsVisible);
1722         _data->_page->viewStateDidChange(WebPageProxy::ViewWindowIsActive | WebPageProxy::ViewIsInWindow);
1723
1724 #if ENABLE(GESTURE_EVENTS)
1725         if (_data->_endGestureMonitor) {
1726             [NSEvent removeMonitor:_data->_endGestureMonitor];
1727             _data->_endGestureMonitor = nil;
1728         }
1729 #endif
1730 #if !defined(BUILDING_ON_SNOW_LEOPARD)
1731         WKHideWordDefinitionWindow();
1732 #endif
1733     }
1734 }
1735
1736 - (void)_windowDidBecomeKey:(NSNotification *)notification
1737 {
1738     NSWindow *keyWindow = [notification object];
1739     if (keyWindow == [self window] || keyWindow == [[self window] attachedSheet]) {
1740         [self _updateSecureInputState];
1741         _data->_page->viewStateDidChange(WebPageProxy::ViewWindowIsActive);
1742     }
1743 }
1744
1745 - (void)_windowDidResignKey:(NSNotification *)notification
1746 {
1747     NSWindow *formerKeyWindow = [notification object];
1748     if (formerKeyWindow == [self window] || formerKeyWindow == [[self window] attachedSheet]) {
1749         [self _updateSecureInputState];
1750         _data->_page->viewStateDidChange(WebPageProxy::ViewWindowIsActive);
1751     }
1752 }
1753
1754 - (void)_windowDidMiniaturize:(NSNotification *)notification
1755 {
1756     [self _updateWindowVisibility];
1757 }
1758
1759 - (void)_windowDidDeminiaturize:(NSNotification *)notification
1760 {
1761     [self _updateWindowVisibility];
1762 }
1763
1764 - (void)_windowFrameDidChange:(NSNotification *)notification
1765 {
1766     [self _updateWindowAndViewFrames];
1767 }
1768
1769 - (void)_windowDidOrderOffScreen:(NSNotification *)notification
1770 {
1771     _data->_page->viewStateDidChange(WebPageProxy::ViewIsVisible);
1772 }
1773
1774 - (void)_windowDidOrderOnScreen:(NSNotification *)notification
1775 {
1776     _data->_page->viewStateDidChange(WebPageProxy::ViewIsVisible);
1777 }
1778
1779 static void drawPageBackground(CGContextRef context, WebPageProxy* page, const IntRect& rect)
1780 {
1781     if (!page->drawsBackground())
1782         return;
1783
1784     CGContextSaveGState(context);
1785     CGContextSetBlendMode(context, kCGBlendModeCopy);
1786
1787     CGColorRef backgroundColor;
1788     if (page->drawsTransparentBackground())
1789         backgroundColor = CGColorGetConstantColor(kCGColorClear);
1790     else
1791         backgroundColor = CGColorGetConstantColor(kCGColorWhite);
1792
1793     CGContextSetFillColorWithColor(context, backgroundColor);
1794     CGContextFillRect(context, rect);
1795
1796     CGContextRestoreGState(context);
1797 }
1798
1799 - (void)drawRect:(NSRect)rect
1800 {
1801     LOG(View, "drawRect: x:%g, y:%g, width:%g, height:%g", rect.origin.x, rect.origin.y, rect.size.width, rect.size.height);
1802     _data->_page->endPrinting();
1803     CGContextRef context = static_cast<CGContextRef>([[NSGraphicsContext currentContext] graphicsPort]);
1804
1805     if (DrawingAreaProxyImpl* drawingArea = static_cast<DrawingAreaProxyImpl*>(_data->_page->drawingArea())) {
1806         const NSRect *rectsBeingDrawn;
1807         NSInteger numRectsBeingDrawn;
1808         [self getRectsBeingDrawn:&rectsBeingDrawn count:&numRectsBeingDrawn];
1809         for (NSInteger i = 0; i < numRectsBeingDrawn; ++i) {
1810             Region unpaintedRegion;
1811             IntRect rect = enclosingIntRect(rectsBeingDrawn[i]);
1812             drawingArea->paint(context, rect, unpaintedRegion);
1813
1814             Vector<IntRect> unpaintedRects = unpaintedRegion.rects();
1815             for (size_t i = 0; i < unpaintedRects.size(); ++i)
1816                 drawPageBackground(context, _data->_page.get(), unpaintedRects[i]);
1817         }
1818     } else 
1819         drawPageBackground(context, _data->_page.get(), enclosingIntRect(rect));
1820
1821     _data->_page->didDraw();
1822 }
1823
1824 - (BOOL)isOpaque
1825 {
1826     return _data->_page->drawsBackground();
1827 }
1828
1829 - (BOOL)mouseDownCanMoveWindow
1830 {
1831     // -[NSView mouseDownCanMoveWindow] returns YES when the NSView is transparent,
1832     // but we don't want a drag in the NSView to move the window, even if it's transparent.
1833     return NO;
1834 }
1835
1836 - (void)viewDidHide
1837 {
1838     _data->_page->viewStateDidChange(WebPageProxy::ViewIsVisible);
1839 }
1840
1841 - (void)viewDidUnhide
1842 {
1843     _data->_page->viewStateDidChange(WebPageProxy::ViewIsVisible);
1844 }
1845
1846 - (id)accessibilityFocusedUIElement
1847 {
1848     if (_data->_pdfViewController)
1849         return NSAccessibilityUnignoredDescendant(_data->_pdfViewController->pdfView());
1850
1851     return _data->_remoteAccessibilityChild.get();
1852 }
1853
1854 - (BOOL)accessibilityIsIgnored
1855 {
1856     return NO;
1857 }
1858
1859 - (id)accessibilityHitTest:(NSPoint)point
1860 {
1861     if (_data->_pdfViewController)
1862         return [_data->_pdfViewController->pdfView() accessibilityHitTest:point];
1863     
1864     return _data->_remoteAccessibilityChild.get();
1865 }
1866
1867 - (id)accessibilityAttributeValue:(NSString*)attribute
1868 {
1869     if ([attribute isEqualToString:NSAccessibilityChildrenAttribute]) {
1870
1871         id child = nil;
1872         if (_data->_pdfViewController)
1873             child = NSAccessibilityUnignoredDescendant(_data->_pdfViewController->pdfView());
1874         else if (_data->_remoteAccessibilityChild)
1875             child = _data->_remoteAccessibilityChild.get();
1876         
1877         if (!child)
1878             return nil;
1879         return [NSArray arrayWithObject:child];
1880     }
1881     if ([attribute isEqualToString:NSAccessibilityRoleAttribute])
1882         return NSAccessibilityGroupRole;
1883     if ([attribute isEqualToString:NSAccessibilityRoleDescriptionAttribute])
1884         return NSAccessibilityRoleDescription(NSAccessibilityGroupRole, nil);
1885     if ([attribute isEqualToString:NSAccessibilityParentAttribute])
1886         return NSAccessibilityUnignoredAncestor([self superview]);
1887     if ([attribute isEqualToString:NSAccessibilityEnabledAttribute])
1888         return [NSNumber numberWithBool:YES];
1889     
1890     return [super accessibilityAttributeValue:attribute];
1891 }
1892
1893 - (NSView *)hitTest:(NSPoint)point
1894 {
1895     NSView *hitView = [super hitTest:point];
1896     if (hitView && _data && hitView == _data->_layerHostingView)
1897         hitView = self;
1898
1899     return hitView;
1900 }
1901
1902 - (NSInteger)conversationIdentifier
1903 {
1904     return (NSInteger)self;
1905 }
1906
1907
1908 - (BOOL)canChangeFrameLayout:(WKFrameRef)frameRef
1909 {
1910     // PDF documents are already paginated, so we can't change them to add headers and footers.
1911     return !toImpl(frameRef)->isMainFrame() || !_data->_pdfViewController;
1912 }
1913
1914 - (NSPrintOperation *)printOperationWithPrintInfo:(NSPrintInfo *)printInfo forFrame:(WKFrameRef)frameRef
1915 {
1916     LOG(View, "Creating an NSPrintOperation for frame '%s'", toImpl(frameRef)->url().utf8().data());
1917
1918     // Only the top frame can currently contain a PDF view.
1919     if (_data->_pdfViewController) {
1920         if (!toImpl(frameRef)->isMainFrame())
1921             return 0;
1922         return _data->_pdfViewController->makePrintOperation(printInfo);
1923     } else {
1924         RetainPtr<WKPrintingView> printingView(AdoptNS, [[WKPrintingView alloc] initWithFrameProxy:toImpl(frameRef) view:self]);
1925         // NSPrintOperation takes ownership of the view.
1926         NSPrintOperation *printOperation = [NSPrintOperation printOperationWithView:printingView.get()];
1927         [printOperation setCanSpawnSeparateThread:YES];
1928         [printOperation setJobTitle:toImpl(frameRef)->title()];
1929         printingView->_printOperation = printOperation;
1930         return printOperation;
1931     }
1932 }
1933
1934 @end
1935
1936 @implementation WKView (Internal)
1937
1938 - (PassOwnPtr<WebKit::DrawingAreaProxy>)_createDrawingAreaProxy
1939 {
1940     return DrawingAreaProxyImpl::create(_data->_page.get());
1941 }
1942
1943 - (BOOL)_isFocused
1944 {
1945     if (_data->_inBecomeFirstResponder)
1946         return YES;
1947     if (_data->_inResignFirstResponder)
1948         return NO;
1949     return [[self window] firstResponder] == self;
1950 }
1951
1952 - (void)_processDidCrash
1953 {
1954     [self setNeedsDisplay:YES];
1955     [self _updateRemoteAccessibilityRegistration:NO];
1956 }
1957
1958 - (void)_pageClosed
1959 {
1960     [self _updateRemoteAccessibilityRegistration:NO];
1961 }
1962
1963 - (void)_didRelaunchProcess
1964 {
1965     [self setNeedsDisplay:YES];
1966 }
1967
1968 - (void)_setCursor:(NSCursor *)cursor
1969 {
1970     if ([NSCursor currentCursor] == cursor)
1971         return;
1972     [cursor set];
1973 }
1974
1975 - (void)_setUserInterfaceItemState:(NSString *)commandName enabled:(BOOL)isEnabled state:(int)newState
1976 {
1977     ValidationVector items = _data->_validationMap.take(commandName);
1978     size_t size = items.size();
1979     for (size_t i = 0; i < size; ++i) {
1980         ValidationItem item = items[i].get();
1981         [menuItem(item) setState:newState];
1982         [menuItem(item) setEnabled:isEnabled];
1983         [toolbarItem(item) setEnabled:isEnabled];
1984         // FIXME <rdar://problem/8803392>: If the item is neither a menu nor toolbar item, it will be left enabled.
1985     }
1986 }
1987
1988 - (void)_resendKeyDownEvent:(NSEvent *)event
1989 {
1990     ASSERT(!_data->_keyDownEventBeingResent);
1991     _data->_keyDownEventBeingResent = event;
1992     [NSApp _setCurrentEvent:event];
1993     [NSApp sendEvent:event];
1994
1995     _data->_keyDownEventBeingResent = nullptr;
1996 }
1997
1998 - (BOOL)_interpretKeyEvent:(NSEvent *)event savingCommandsTo:(Vector<WebCore::KeypressCommand>&)commands
1999 {
2000     ASSERT(!_data->_interpretKeyEventsParameters);
2001     ASSERT(commands.isEmpty());
2002
2003     if ([event type] == NSFlagsChanged)
2004         return NO;
2005
2006     WKViewInterpretKeyEventsParameters parameters;
2007     parameters.eventInterpretationHadSideEffects = false;
2008     parameters.executingSavedKeypressCommands = false;
2009     // We assume that an input method has consumed the event, and only change this assumption if one of the NSTextInput methods is called.
2010     // We assume the IM will *not* consume hotkey sequences.
2011     parameters.consumedByIM = !([event modifierFlags] & NSCommandKeyMask);
2012     parameters.commands = &commands;
2013     _data->_interpretKeyEventsParameters = &parameters;
2014
2015     [self interpretKeyEvents:[NSArray arrayWithObject:event]];
2016
2017     _data->_interpretKeyEventsParameters = 0;
2018
2019     // An input method may consume an event and not tell us (e.g. when displaying a candidate window),
2020     // in which case we should not bubble the event up the DOM.
2021     if (parameters.consumedByIM)
2022         return YES;
2023
2024     // 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.
2025     return parameters.eventInterpretationHadSideEffects;
2026 }
2027
2028 - (NSRect)_convertToDeviceSpace:(NSRect)rect
2029 {
2030     return toDeviceSpace(rect, [self window]);
2031 }
2032
2033 - (NSRect)_convertToUserSpace:(NSRect)rect
2034 {
2035     return toUserSpace(rect, [self window]);
2036 }
2037
2038 // Any non-zero value will do, but using something recognizable might help us debug some day.
2039 #define TRACKING_RECT_TAG 0xBADFACE
2040
2041 - (NSTrackingRectTag)addTrackingRect:(NSRect)rect owner:(id)owner userData:(void *)data assumeInside:(BOOL)assumeInside
2042 {
2043     ASSERT(_data->_trackingRectOwner == nil);
2044     _data->_trackingRectOwner = owner;
2045     _data->_trackingRectUserData = data;
2046     return TRACKING_RECT_TAG;
2047 }
2048
2049 - (NSTrackingRectTag)_addTrackingRect:(NSRect)rect owner:(id)owner userData:(void *)data assumeInside:(BOOL)assumeInside useTrackingNum:(int)tag
2050 {
2051     ASSERT(tag == 0 || tag == TRACKING_RECT_TAG);
2052     ASSERT(_data->_trackingRectOwner == nil);
2053     _data->_trackingRectOwner = owner;
2054     _data->_trackingRectUserData = data;
2055     return TRACKING_RECT_TAG;
2056 }
2057
2058 - (void)_addTrackingRects:(NSRect *)rects owner:(id)owner userDataList:(void **)userDataList assumeInsideList:(BOOL *)assumeInsideList trackingNums:(NSTrackingRectTag *)trackingNums count:(int)count
2059 {
2060     ASSERT(count == 1);
2061     ASSERT(trackingNums[0] == 0 || trackingNums[0] == TRACKING_RECT_TAG);
2062     ASSERT(_data->_trackingRectOwner == nil);
2063     _data->_trackingRectOwner = owner;
2064     _data->_trackingRectUserData = userDataList[0];
2065     trackingNums[0] = TRACKING_RECT_TAG;
2066 }
2067
2068 - (void)removeTrackingRect:(NSTrackingRectTag)tag
2069 {
2070     if (!_data)
2071         return;
2072
2073     if (tag == 0)
2074         return;
2075     
2076     if (tag == TRACKING_RECT_TAG) {
2077         _data->_trackingRectOwner = nil;
2078         return;
2079     }
2080     
2081     if (tag == _data->_lastToolTipTag) {
2082         [super removeTrackingRect:tag];
2083         _data->_lastToolTipTag = 0;
2084         return;
2085     }
2086
2087     // If any other tracking rect is being removed, we don't know how it was created
2088     // and it's possible there's a leak involved (see 3500217)
2089     ASSERT_NOT_REACHED();
2090 }
2091
2092 - (void)_removeTrackingRects:(NSTrackingRectTag *)tags count:(int)count
2093 {
2094     int i;
2095     for (i = 0; i < count; ++i) {
2096         int tag = tags[i];
2097         if (tag == 0)
2098             continue;
2099         ASSERT(tag == TRACKING_RECT_TAG);
2100         if (_data != nil) {
2101             _data->_trackingRectOwner = nil;
2102         }
2103     }
2104 }
2105
2106 - (void)_sendToolTipMouseExited
2107 {
2108     // Nothing matters except window, trackingNumber, and userData.
2109     NSEvent *fakeEvent = [NSEvent enterExitEventWithType:NSMouseExited
2110         location:NSMakePoint(0, 0)
2111         modifierFlags:0
2112         timestamp:0
2113         windowNumber:[[self window] windowNumber]
2114         context:NULL
2115         eventNumber:0
2116         trackingNumber:TRACKING_RECT_TAG
2117         userData:_data->_trackingRectUserData];
2118     [_data->_trackingRectOwner mouseExited:fakeEvent];
2119 }
2120
2121 - (void)_sendToolTipMouseEntered
2122 {
2123     // Nothing matters except window, trackingNumber, and userData.
2124     NSEvent *fakeEvent = [NSEvent enterExitEventWithType:NSMouseEntered
2125         location:NSMakePoint(0, 0)
2126         modifierFlags:0
2127         timestamp:0
2128         windowNumber:[[self window] windowNumber]
2129         context:NULL
2130         eventNumber:0
2131         trackingNumber:TRACKING_RECT_TAG
2132         userData:_data->_trackingRectUserData];
2133     [_data->_trackingRectOwner mouseEntered:fakeEvent];
2134 }
2135
2136 - (NSString *)view:(NSView *)view stringForToolTip:(NSToolTipTag)tag point:(NSPoint)point userData:(void *)data
2137 {
2138     return nsStringFromWebCoreString(_data->_page->toolTip());
2139 }
2140
2141 - (void)_toolTipChangedFrom:(NSString *)oldToolTip to:(NSString *)newToolTip
2142 {
2143     if (oldToolTip)
2144         [self _sendToolTipMouseExited];
2145
2146     if (newToolTip && [newToolTip length] > 0) {
2147         // See radar 3500217 for why we remove all tooltips rather than just the single one we created.
2148         [self removeAllToolTips];
2149         NSRect wideOpenRect = NSMakeRect(-100000, -100000, 200000, 200000);
2150         _data->_lastToolTipTag = [self addToolTipRect:wideOpenRect owner:self userData:NULL];
2151         [self _sendToolTipMouseEntered];
2152     }
2153 }
2154
2155 - (void)_setFindIndicator:(PassRefPtr<FindIndicator>)findIndicator fadeOut:(BOOL)fadeOut
2156 {
2157     if (!findIndicator) {
2158         _data->_findIndicatorWindow = 0;
2159         return;
2160     }
2161
2162     if (!_data->_findIndicatorWindow)
2163         _data->_findIndicatorWindow = FindIndicatorWindow::create(self);
2164
2165     _data->_findIndicatorWindow->setFindIndicator(findIndicator, fadeOut);
2166 }
2167
2168 - (void)_enterAcceleratedCompositingMode:(const LayerTreeContext&)layerTreeContext
2169 {
2170     ASSERT(!_data->_layerHostingView);
2171     ASSERT(!layerTreeContext.isEmpty());
2172
2173     // Create an NSView that will host our layer tree.
2174     _data->_layerHostingView.adoptNS([[NSView alloc] initWithFrame:[self bounds]]);
2175     [_data->_layerHostingView.get() setAutoresizingMask:NSViewWidthSizable | NSViewHeightSizable];
2176
2177     [CATransaction begin];
2178     [CATransaction setDisableActions:YES];
2179     [self addSubview:_data->_layerHostingView.get()];
2180
2181     // Create a root layer that will back the NSView.
2182     RetainPtr<CALayer> rootLayer(AdoptNS, [[CALayer alloc] init]);
2183 #ifndef NDEBUG
2184     [rootLayer.get() setName:@"Hosting root layer"];
2185 #endif
2186
2187     CALayer *renderLayer = WKMakeRenderLayer(layerTreeContext.contextID);
2188     [rootLayer.get() addSublayer:renderLayer];
2189
2190     [_data->_layerHostingView.get() setLayer:rootLayer.get()];
2191     [_data->_layerHostingView.get() setWantsLayer:YES];
2192
2193     [CATransaction commit];
2194 }
2195
2196 - (void)_exitAcceleratedCompositingMode
2197 {
2198     ASSERT(_data->_layerHostingView);
2199
2200     [_data->_layerHostingView.get() removeFromSuperview];
2201     [_data->_layerHostingView.get() setLayer:nil];
2202     [_data->_layerHostingView.get() setWantsLayer:NO];
2203     
2204     _data->_layerHostingView = nullptr;
2205 }
2206
2207 - (void)_setAccessibilityWebProcessToken:(NSData *)data
2208 {
2209 #if !defined(BUILDING_ON_SNOW_LEOPARD)
2210     _data->_remoteAccessibilityChild = WKAXRemoteElementForToken(data);
2211     [self _updateRemoteAccessibilityRegistration:YES];
2212 #endif
2213 }
2214
2215 - (void)_setComplexTextInputEnabled:(BOOL)complexTextInputEnabled pluginComplexTextInputIdentifier:(uint64_t)pluginComplexTextInputIdentifier
2216 {
2217     BOOL inputSourceChanged = _data->_pluginComplexTextInputIdentifier;
2218
2219     if (complexTextInputEnabled) {
2220         // Check if we're already allowing text input for this plug-in.
2221         if (pluginComplexTextInputIdentifier == _data->_pluginComplexTextInputIdentifier)
2222             return;
2223
2224         _data->_pluginComplexTextInputIdentifier = pluginComplexTextInputIdentifier;
2225
2226     } else {
2227         // Check if we got a request to disable complex text input for a plug-in that is not the current plug-in.
2228         if (pluginComplexTextInputIdentifier != _data->_pluginComplexTextInputIdentifier)
2229             return;
2230
2231         _data->_pluginComplexTextInputIdentifier = 0;
2232     }
2233
2234     if (inputSourceChanged) {
2235         // Inform the out of line window that the input source changed.
2236         [[WKTextInputWindowController sharedTextInputWindowController] keyboardInputSourceChanged];
2237     }
2238 }
2239
2240 - (void)_setPageHasCustomRepresentation:(BOOL)pageHasCustomRepresentation
2241 {
2242     _data->_pdfViewController = nullptr;
2243
2244     if (pageHasCustomRepresentation)
2245         _data->_pdfViewController = PDFViewController::create(self);
2246 }
2247
2248 - (void)_didFinishLoadingDataForCustomRepresentationWithSuggestedFilename:(const String&)suggestedFilename dataReference:(const CoreIPC::DataReference&)dataReference
2249 {
2250     ASSERT(_data->_pdfViewController);
2251
2252     _data->_pdfViewController->setPDFDocumentData(_data->_page->mainFrame()->mimeType(), suggestedFilename, dataReference);
2253 }
2254
2255 - (double)_customRepresentationZoomFactor
2256 {
2257     if (!_data->_pdfViewController)
2258         return 1;
2259
2260     return _data->_pdfViewController->zoomFactor();
2261 }
2262
2263 - (void)_setCustomRepresentationZoomFactor:(double)zoomFactor
2264 {
2265     if (!_data->_pdfViewController)
2266         return;
2267
2268     _data->_pdfViewController->setZoomFactor(zoomFactor);
2269 }
2270
2271 - (void)_findStringInCustomRepresentation:(NSString *)string withFindOptions:(WebKit::FindOptions)options maxMatchCount:(NSUInteger)count
2272 {
2273     if (!_data->_pdfViewController)
2274         return;
2275
2276     _data->_pdfViewController->findString(string, options, count);
2277 }
2278
2279 - (void)_countStringMatchesInCustomRepresentation:(NSString *)string withFindOptions:(WebKit::FindOptions)options maxMatchCount:(NSUInteger)count
2280 {
2281     if (!_data->_pdfViewController)
2282         return;
2283
2284     _data->_pdfViewController->countStringMatches(string, options, count);
2285 }
2286
2287 - (void)_setDragImage:(NSImage *)image at:(NSPoint)clientPoint linkDrag:(BOOL)linkDrag
2288 {
2289     // We need to prevent re-entering this call to avoid crashing in AppKit.
2290     // Given the asynchronous nature of WebKit2 this can now happen.
2291     if (_data->_dragHasStarted)
2292         return;
2293     
2294     _data->_dragHasStarted = YES;
2295     [super dragImage:image
2296                   at:clientPoint
2297               offset:NSZeroSize
2298                event:(linkDrag) ? [NSApp currentEvent] :_data->_mouseDownEvent
2299           pasteboard:[NSPasteboard pasteboardWithName:NSDragPboard]
2300               source:self
2301            slideBack:YES];
2302     _data->_dragHasStarted = NO;
2303 }
2304
2305 - (void)_updateSecureInputState
2306 {
2307     if (![[self window] isKeyWindow] || ([[self window] firstResponder] != self && !_data->_inBecomeFirstResponder)) {
2308         if (_data->_inSecureInputState) {
2309             DisableSecureEventInput();
2310             _data->_inSecureInputState = NO;
2311         }
2312         return;
2313     }
2314     // WKView has a single input context for all editable areas (except for plug-ins).
2315     NSTextInputContext *context = [super inputContext];
2316     bool isInPasswordField = _data->_page->editorState().isInPasswordField;
2317
2318     if (isInPasswordField) {
2319         if (!_data->_inSecureInputState)
2320             EnableSecureEventInput();
2321         static NSArray *romanInputSources = [[NSArray alloc] initWithObjects:&NSAllRomanInputSourcesLocaleIdentifier count:1];
2322         [context setAllowedInputSourceLocales:romanInputSources];
2323     } else {
2324         if (_data->_inSecureInputState)
2325             DisableSecureEventInput();
2326         [context setAllowedInputSourceLocales:nil];
2327     }
2328     _data->_inSecureInputState = isInPasswordField;
2329 }
2330
2331 - (void)_setDrawingAreaSize:(NSSize)size
2332 {
2333     if (!_data->_page->drawingArea())
2334         return;
2335     
2336     _data->_page->drawingArea()->setSize(IntSize(size), IntSize(_data->_resizeScrollOffset));
2337     _data->_resizeScrollOffset = NSZeroSize;
2338 }
2339
2340 - (void)_didChangeScrollbarsForMainFrame
2341 {
2342     [self _updateGrowBoxForWindowFrameChange];
2343 }
2344
2345 #if ENABLE(FULLSCREEN_API)
2346 - (WKFullScreenWindowController*)fullScreenWindowController
2347 {
2348     if (!_data->_fullScreenWindowController) {
2349         _data->_fullScreenWindowController.adoptNS([[WKFullScreenWindowController alloc] init]);
2350         [_data->_fullScreenWindowController.get() setWebView:self];
2351     }
2352     return _data->_fullScreenWindowController.get();
2353 }
2354 #endif
2355
2356 - (bool)_executeSavedCommandBySelector:(SEL)selector
2357 {
2358     // The sink does two things: 1) Tells us if the responder went unhandled, and
2359     // 2) prevents any NSBeep; we don't ever want to beep here.
2360     RetainPtr<WKResponderChainSink> sink(AdoptNS, [[WKResponderChainSink alloc] initWithResponderChain:self]);
2361     [super doCommandBySelector:selector];
2362     [sink.get() detach];
2363     return ![sink.get() didReceiveUnhandledCommand];
2364 }
2365
2366 @end
2367
2368 @implementation WKView (Private)
2369
2370 - (void)disableFrameSizeUpdates
2371 {
2372     _frameSizeUpdatesDisabledCount++;
2373 }
2374
2375 - (void)enableFrameSizeUpdates
2376 {
2377     if (!_frameSizeUpdatesDisabledCount)
2378         return;
2379     
2380     if (!(--_frameSizeUpdatesDisabledCount))
2381         [self _setDrawingAreaSize:[self frame].size];
2382 }
2383
2384 - (BOOL)frameSizeUpdatesDisabled
2385 {
2386     return _frameSizeUpdatesDisabledCount > 0;
2387 }
2388
2389 - (void)performDictionaryLookupAtCurrentMouseLocation
2390 {
2391     NSPoint thePoint = [NSEvent mouseLocation];
2392     thePoint = [[self window] convertScreenToBase:thePoint];
2393     thePoint = [self convertPoint:thePoint fromView:nil];
2394
2395     _data->_page->performDictionaryLookupAtLocation(FloatPoint(thePoint.x, thePoint.y));
2396 }
2397
2398 - (NSInteger)spellCheckerDocumentTag
2399 {
2400     if (!_data->_hasSpellCheckerDocumentTag) {
2401         _data->_spellCheckerDocumentTag = [NSSpellChecker uniqueSpellDocumentTag];
2402         _data->_hasSpellCheckerDocumentTag = YES;
2403     }
2404     return _data->_spellCheckerDocumentTag;
2405 }
2406
2407 - (void)handleCorrectionPanelResult:(NSString*)result
2408 {
2409     _data->_page->handleCorrectionPanelResult(result);
2410 }
2411
2412 @end
2413
2414 @implementation WKResponderChainSink
2415
2416 - (id)initWithResponderChain:(NSResponder *)chain
2417 {
2418     self = [super init];
2419     if (!self)
2420         return nil;
2421     _lastResponderInChain = chain;
2422     while (NSResponder *next = [_lastResponderInChain nextResponder])
2423         _lastResponderInChain = next;
2424     [_lastResponderInChain setNextResponder:self];
2425     return self;
2426 }
2427
2428 - (void)detach
2429 {
2430     [_lastResponderInChain setNextResponder:nil];
2431     _lastResponderInChain = nil;
2432 }
2433
2434 - (bool)didReceiveUnhandledCommand
2435 {
2436     return _didReceiveUnhandledCommand;
2437 }
2438
2439 - (void)noResponderFor:(SEL)selector
2440 {
2441     _didReceiveUnhandledCommand = true;
2442 }
2443
2444 - (void)doCommandBySelector:(SEL)selector
2445 {
2446     _didReceiveUnhandledCommand = true;
2447 }
2448
2449 - (BOOL)tryToPerform:(SEL)action with:(id)object
2450 {
2451     _didReceiveUnhandledCommand = true;
2452     return YES;
2453 }
2454
2455 @end