WebKit/WebView.subproj/WebHTMLView.m

   1 /*
   2     WebHTMLView.m
   3     Copyright 2002, Apple, Inc. All rights reserved.
   4 */
   5
   6 #import <WebKit/WebHTMLView.h>
   7
   8 #import <WebKit/DOM.h>
   9 #import <WebKit/DOMExtensions.h>
  10 #import <WebKit/WebArchive.h>
  11 #import <WebKit/WebBridge.h>
  12 #import <WebKit/WebClipView.h>
  13 #import <WebKit/WebDataProtocol.h>
  14 #import <WebKit/WebDataSourcePrivate.h>
  15 #import <WebKit/WebDocumentInternal.h>
  16 #import <WebKit/WebDOMOperations.h>
  17 #import <WebKit/WebEditingDelegate.h>
  18 #import <WebKit/WebException.h>
  19 #import <WebKit/WebFramePrivate.h>
  20 #import <WebKit/WebFrameViewPrivate.h>
  21 #import <WebKit/WebHTMLViewInternal.h>
  22 #import <WebKit/WebHTMLRepresentationPrivate.h>
  23 #import <WebKit/WebImageRenderer.h>
  24 #import <WebKit/WebImageRendererFactory.h>
  25 #import <WebKit/WebKitLogging.h>
  26 #import <WebKit/WebKitNSStringExtras.h>
  27 #import <WebKit/WebNetscapePluginEmbeddedView.h>
  28 #import <WebKit/WebNSEventExtras.h>
  29 #import <WebKit/WebNSImageExtras.h>
  30 #import <WebKit/WebNSObjectExtras.h>
  31 #import <WebKit/WebNSPasteboardExtras.h>
  32 #import <WebKit/WebNSPrintOperationExtras.h>
  33 #import <WebKit/WebNSURLExtras.h>
  34 #import <WebKit/WebNSViewExtras.h>
  35 #import <WebKit/WebPluginController.h>
  36 #import <WebKit/WebPreferences.h>
  37 #import <WebKit/WebResourcePrivate.h>
  38 #import <WebKit/WebStringTruncator.h>
  39 #import <WebKit/WebTextRenderer.h>
  40 #import <WebKit/WebTextRendererFactory.h>
  41 #import <WebKit/WebUIDelegatePrivate.h>
  42 #import <WebKit/WebUnicode.h>
  43 #import <WebKit/WebViewPrivate.h>
  44
  45 #import <AppKit/NSAccessibility.h>
  46 #import <AppKit/NSGraphicsContextPrivate.h>
  47 #import <AppKit/NSResponder_Private.h>
  48
  49 #import <Foundation/NSFileManager_NSURLExtras.h>
  50 #import <Foundation/NSURL_NSURLExtras.h>
  51 #import <Foundation/NSURLFileTypeMappings.h>
  52
  53 #import <CoreGraphics/CGContextGState.h>
  54
  55 // By imaging to a width a little wider than the available pixels,
  56 // thin pages will be scaled down a little, matching the way they
  57 // print in IE and Camino. This lets them use fewer sheets than they
  58 // would otherwise, which is presumably why other browsers do this.
  59 // Wide pages will be scaled down more than this.
  60 #define PrintingMinimumShrinkFactor     1.25
  61
  62 // This number determines how small we are willing to reduce the page content
  63 // in order to accommodate the widest line. If the page would have to be
  64 // reduced smaller to make the widest line fit, we just clip instead (this
  65 // behavior matches MacIE and Mozilla, at least)
  66 #define PrintingMaximumShrinkFactor     2.0
  67
  68 #define AUTOSCROLL_INTERVAL             0.1
  69
  70 #define DRAG_LABEL_BORDER_X             4.0
  71 #define DRAG_LABEL_BORDER_Y             2.0
  72 #define DRAG_LABEL_RADIUS               5.0
  73 #define DRAG_LABEL_BORDER_Y_OFFSET              2.0
  74
  75 #define MIN_DRAG_LABEL_WIDTH_BEFORE_CLIP        120.0
  76 #define MAX_DRAG_LABEL_WIDTH                    320.0
  77
  78 #define DRAG_LINK_LABEL_FONT_SIZE   11.0
  79 #define DRAG_LINK_URL_FONT_SIZE   10.0
  80
  81 static BOOL forceRealHitTest = NO;
  82
  83 @interface WebHTMLView (WebTextSizing) <_web_WebDocumentTextSizing>
  84 @end
  85
  86 @interface WebHTMLView (WebFileInternal)
  87 - (BOOL)_imageExistsAtPaths:(NSArray *)paths;
  88 - (DOMDocumentFragment *)_documentFragmentFromPasteboard:(NSPasteboard *)pasteboard allowPlainText:(BOOL)allowPlainText;
  89 - (void)_pasteWithPasteboard:(NSPasteboard *)pasteboard allowPlainText:(BOOL)allowPlainText;
  90 - (BOOL)_shouldInsertFragment:(DOMDocumentFragment *)fragment replacingDOMRange:(DOMRange *)range givenAction:(WebViewInsertAction)action;
  91 @end
  92
  93 @interface WebHTMLView (WebHTMLViewPrivate)
  94 - (void)_setPrinting:(BOOL)printing minimumPageWidth:(float)minPageWidth maximumPageWidth:(float)maxPageWidth adjustViewSize:(BOOL)adjustViewSize;
  95 - (void)_updateTextSizeMultiplier;
  96 - (float)_calculatePrintHeight;
  97 - (float)_scaleFactorForPrintOperation:(NSPrintOperation *)printOperation;
  98 @end
  99
 100 // Any non-zero value will do, but using somethign recognizable might help us debug some day.
 101 #define TRACKING_RECT_TAG 0xBADFACE
 102
 103 @interface NSView (AppKitSecretsIKnowAbout)
 104 - (void)_recursiveDisplayRectIfNeededIgnoringOpacity:(NSRect)rect isVisibleRect:(BOOL)isVisibleRect rectIsVisibleRectForView:(NSView *)visibleView topView:(BOOL)topView;
 105 - (void)_recursiveDisplayAllDirtyWithLockFocus:(BOOL)needsLockFocus visRect:(NSRect)visRect;
 106 - (NSRect)_dirtyRect;
 107 - (void)_setDrawsOwnDescendants:(BOOL)drawsOwnDescendants;
 108 @end
 109
 110 @interface NSApplication (AppKitSecretsIKnowAbout)
 111 - (void)speakString:(NSString *)string;
 112 @end
 113
 114 @interface NSWindow (AppKitSecretsIKnowAbout)
 115 - (id)_newFirstResponderAfterResigning;
 116 @end
 117
 118 @interface NSView (WebHTMLViewPrivate)
 119 - (void)_web_setPrintingModeRecursive;
 120 - (void)_web_clearPrintingModeRecursive;
 121 - (void)_web_layoutIfNeededRecursive:(NSRect)rect testDirtyRect:(bool)testDirtyRect;
 122 @end
 123
 124 @interface NSMutableDictionary (WebHTMLViewPrivate)
 125 - (void)_web_setObjectIfNotNil:(id)object forKey:(id)key;
 126 @end
 127
 128 @interface WebElementOrTextFilter : NSObject <DOMNodeFilter>
 129 + (WebElementOrTextFilter *)filter;
 130 @end
 131
 132 static WebElementOrTextFilter *elementOrTextFilterInstance = nil;
 133
 134 @implementation WebHTMLViewPrivate
 135
 136 - (void)dealloc
 137 {
 138     ASSERT(autoscrollTimer == nil);
 139     ASSERT(autoscrollTriggerEvent == nil);
 140
 141     [mouseDownEvent release];
 142     [draggingImageURL release];
 143     [pluginController release];
 144     [toolTip release];
 145
 146     [super dealloc];
 147 }
 148
 149 @end
 150
 151 @implementation WebHTMLView (WebFileInternal)
 152
 153 - (BOOL)_imageExistsAtPaths:(NSArray *)paths
 154 {
 155     NSURLFileTypeMappings *mappings = [NSURLFileTypeMappings sharedMappings];
 156     NSArray *imageMIMETypes = [[WebImageRendererFactory sharedFactory] supportedMIMETypes];
 157     NSEnumerator *enumerator = [paths objectEnumerator];
 158     NSString *path;
 159
 160     while ((path = [enumerator nextObject]) != nil) {
 161         NSString *MIMEType = [mappings MIMETypeForExtension:[path pathExtension]];
 162         if ([imageMIMETypes containsObject:MIMEType]) {
 163             return YES;
 164         }
 165     }
 166
 167     return NO;
 168 }
 169
 170 - (DOMDocumentFragment *)_documentFragmentWithPaths:(NSArray *)paths
 171 {
 172     DOMDocumentFragment *fragment = [[[self _bridge] DOMDocument] createDocumentFragment];
 173     NSURLFileTypeMappings *mappings = [NSURLFileTypeMappings sharedMappings];
 174     NSArray *imageMIMETypes = [[WebImageRendererFactory sharedFactory] supportedMIMETypes];
 175     NSEnumerator *enumerator = [paths objectEnumerator];
 176     WebDataSource *dataSource = [self _dataSource];
 177     NSString *path;
 178
 179     while ((path = [enumerator nextObject]) != nil) {
 180         NSString *MIMEType = [mappings MIMETypeForExtension:[path pathExtension]];
 181         if ([imageMIMETypes containsObject:MIMEType]) {
 182             WebResource *resource = [[WebResource alloc] initWithData:[NSData dataWithContentsOfFile:path]
 183                                                                   URL:[NSURL fileURLWithPath:path]
 184                                                              MIMEType:MIMEType
 185                                                      textEncodingName:nil
 186                                                             frameName:nil];
 187             if (resource) {
 188                 [fragment appendChild:[dataSource _imageElementWithImageResource:resource]];
 189                 [resource release];
 190             }
 191         }
 192     }
 193
 194     return [fragment firstChild] != nil ? fragment : nil;
 195 }
 196
 197 - (DOMDocumentFragment *)_documentFragmentFromPasteboard:(NSPasteboard *)pasteboard allowPlainText:(BOOL)allowPlainText
 198 {
 199     NSArray *types = [pasteboard types];
 200
 201     if ([types containsObject:WebArchivePboardType]) {
 202         WebArchive *archive = [[WebArchive alloc] initWithData:[pasteboard dataForType:WebArchivePboardType]];
 203         if (archive) {
 204             DOMDocumentFragment *fragment = [[self _dataSource] _documentFragmentWithArchive:archive];
 205             [archive release];
 206             if (fragment) {
 207                 return fragment;
 208             }
 209         }
 210     }
 211
 212     if ([types containsObject:NSFilenamesPboardType]) {
 213         DOMDocumentFragment *fragment = [self _documentFragmentWithPaths:[pasteboard propertyListForType:NSFilenamesPboardType]];
 214         if (fragment != nil) {
 215             return fragment;
 216         }
 217     }
 218
 219     NSURL *URL;
 220
 221     if ([types containsObject:NSHTMLPboardType]) {
 222         return [[self _bridge] documentFragmentWithMarkupString:[pasteboard stringForType:NSHTMLPboardType] baseURLString:nil];
 223     } else if ([types containsObject:NSTIFFPboardType]) {
 224         WebResource *resource = [[WebResource alloc] initWithData:[pasteboard dataForType:NSTIFFPboardType]
 225                                                               URL:[NSURL _web_uniqueWebDataURLWithRelativeString:@"/image.tiff"]
 226                                                          MIMEType:@"image/tiff"
 227                                                  textEncodingName:nil
 228                                                         frameName:nil];
 229         DOMDocumentFragment *fragment = [[self _dataSource] _documentFragmentWithImageResource:resource];
 230         [resource release];
 231         return fragment;
 232     } else if ([types containsObject:NSPICTPboardType]) {
 233         WebResource *resource = [[WebResource alloc] initWithData:[pasteboard dataForType:NSPICTPboardType]
 234                                                               URL:[NSURL _web_uniqueWebDataURLWithRelativeString:@"/image.pict"]
 235                                                          MIMEType:@"image/pict"
 236                                                  textEncodingName:nil
 237                                                         frameName:nil];
 238         DOMDocumentFragment *fragment = [[self _dataSource] _documentFragmentWithImageResource:resource];
 239         [resource release];
 240         return fragment;
 241     } else if ((URL = [pasteboard _web_bestURL])) {
 242         NSString *URLString = [URL _web_originalDataAsString];
 243         NSString *linkLabel = [pasteboard stringForType:WebURLNamePboardType];
 244         linkLabel = [linkLabel length] > 0 ? linkLabel : URLString;
 245
 246         DOMDocument *document = [[self _bridge] DOMDocument];
 247         DOMDocumentFragment *fragment = [document createDocumentFragment];
 248         DOMElement *anchorElement = [document createElement:@"a"];
 249         [anchorElement setAttribute:@"href" :URLString];
 250         [fragment appendChild:anchorElement];
 251         [anchorElement appendChild:[document createTextNode:linkLabel]];
 252         return fragment;
 253     } else if ([types containsObject:NSRTFDPboardType]) {
 254         // FIXME: Support RTFD to HTML (or DOM) conversion.
 255         ERROR("RTFD to HTML conversion not yet supported.");
 256         return [[self _bridge] documentFragmentWithText:[pasteboard stringForType:NSStringPboardType]];
 257     } else if ([types containsObject:NSRTFPboardType]) {
 258         // FIXME: Support RTF to HTML (or DOM) conversion.
 259         ERROR("RTF to HTML conversion not yet supported.");
 260         return [[self _bridge] documentFragmentWithText:[pasteboard stringForType:NSStringPboardType]];
 261     } else if (allowPlainText && [types containsObject:NSStringPboardType]) {
 262         return [[self _bridge] documentFragmentWithText:[pasteboard stringForType:NSStringPboardType]];
 263     }
 264
 265     return nil;
 266 }
 267
 268 - (void)_pasteWithPasteboard:(NSPasteboard *)pasteboard allowPlainText:(BOOL)allowPlainText
 269 {
 270     DOMDocumentFragment *fragment = [self _documentFragmentFromPasteboard:pasteboard allowPlainText:allowPlainText];
 271     WebBridge *bridge = [self _bridge];
 272     if (fragment && [self _shouldInsertFragment:fragment replacingDOMRange:[bridge selectedDOMRange] givenAction:WebViewInsertActionPasted]) {
 273         [bridge replaceSelectionWithFragment:fragment selectReplacement:NO];
 274     }
 275 }
 276
 277 - (BOOL)_shouldInsertFragment:(DOMDocumentFragment *)fragment replacingDOMRange:(DOMRange *)range givenAction:(WebViewInsertAction)action
 278 {
 279     WebView *webView = [self _webView];
 280     DOMNode *child = [fragment firstChild];
 281     if ([fragment lastChild] == child && [child isKindOfClass:[DOMCharacterData class]]) {
 282         return [[webView _editingDelegateForwarder] webView:webView shouldInsertText:[(DOMCharacterData *)child data] replacingDOMRange:range givenAction:action];
 283     } else {
 284         return [[webView _editingDelegateForwarder] webView:webView shouldInsertNode:fragment replacingDOMRange:range givenAction:action];
 285     }
 286 }
 287
 288 @end
 289
 290 @implementation WebHTMLView (WebPrivate)
 291
 292 - (void)_reset
 293 {
 294     [WebImageRenderer stopAnimationsInView:self];
 295 }
 296
 297 - (WebView *)_webView
 298 {
 299     // We used to use the view hierarchy exclusively here, but that won't work
 300     // right when the first viewDidMoveToSuperview call is done, and this wil.
 301     return [[self _frame] webView];
 302 }
 303
 304 - (WebFrame *)_frame
 305 {
 306     WebFrameView *webFrameView = [self _web_parentWebFrameView];
 307     return [webFrameView webFrame];
 308 }
 309
 310 // Required so view can access the part's selection.
 311 - (WebBridge *)_bridge
 312 {
 313     return [[self _frame] _bridge];
 314 }
 315
 316 - (WebDataSource *)_dataSource
 317 {
 318     return [[self _frame] dataSource];
 319 }
 320
 321 + (void)_postFlagsChangedEvent:(NSEvent *)flagsChangedEvent
 322 {
 323     NSEvent *fakeEvent = [NSEvent mouseEventWithType:NSMouseMoved
 324         location:[[flagsChangedEvent window] convertScreenToBase:[NSEvent mouseLocation]]
 325         modifierFlags:[flagsChangedEvent modifierFlags]
 326         timestamp:[flagsChangedEvent timestamp]
 327         windowNumber:[flagsChangedEvent windowNumber]
 328         context:[flagsChangedEvent context]
 329         eventNumber:0 clickCount:0 pressure:0];
 330
 331     // Pretend it's a mouse move.
 332     [[NSNotificationCenter defaultCenter]
 333         postNotificationName:NSMouseMovedNotification object:self
 334         userInfo:[NSDictionary dictionaryWithObject:fakeEvent forKey:@"NSEvent"]];
 335 }
 336
 337 - (void)_updateMouseoverWithFakeEvent
 338 {
 339     NSEvent *fakeEvent = [NSEvent mouseEventWithType:NSMouseMoved
 340         location:[[self window] convertScreenToBase:[NSEvent mouseLocation]]
 341         modifierFlags:[[NSApp currentEvent] modifierFlags]
 342         timestamp:[NSDate timeIntervalSinceReferenceDate]
 343         windowNumber:[[self window] windowNumber]
 344         context:[[NSApp currentEvent] context]
 345         eventNumber:0 clickCount:0 pressure:0];
 346
 347     [self _updateMouseoverWithEvent:fakeEvent];
 348 }
 349
 350 - (void)_frameOrBoundsChanged
 351 {
 352     if (!NSEqualSizes(_private->lastLayoutSize, [(NSClipView *)[self superview] documentVisibleRect].size)) {
 353         [self setNeedsLayout:YES];
 354         [self setNeedsDisplay:YES];
 355     }
 356
 357     NSPoint origin = [[self superview] bounds].origin;
 358     if (!NSEqualPoints(_private->lastScrollPosition, origin))
 359         [[self _bridge] sendScrollEvent];
 360     _private->lastScrollPosition = origin;
 361
 362     SEL selector = @selector(_updateMouseoverWithFakeEvent);
 363     [NSObject cancelPreviousPerformRequestsWithTarget:self selector:selector object:nil];
 364     [self performSelector:selector withObject:nil afterDelay:0];
 365 }
 366
 367 - (void)_setAsideSubviews
 368 {
 369     ASSERT(!_private->subviewsSetAside);
 370     ASSERT(_private->savedSubviews == nil);
 371     _private->savedSubviews = _subviews;
 372     _subviews = nil;
 373     _private->subviewsSetAside = YES;
 374  }
 375
 376  - (void)_restoreSubviews
 377  {
 378     ASSERT(_private->subviewsSetAside);
 379     ASSERT(_subviews == nil);
 380     _subviews = _private->savedSubviews;
 381     _private->savedSubviews = nil;
 382     _private->subviewsSetAside = NO;
 383 }
 384
 385 // Don't let AppKit even draw subviews. We take care of that.
 386 - (void)_recursiveDisplayRectIfNeededIgnoringOpacity:(NSRect)rect isVisibleRect:(BOOL)isVisibleRect rectIsVisibleRectForView:(NSView *)visibleView topView:(BOOL)topView
 387 {
 388     // This helps when we print as part of a larger print process.
 389     // If the WebHTMLView itself is what we're printing, then we will never have to do this.
 390     BOOL wasInPrintingMode = _private->printing;
 391     BOOL isPrinting = ![NSGraphicsContext currentContextDrawingToScreen];
 392     if (wasInPrintingMode != isPrinting) {
 393         if (isPrinting) {
 394             [self _web_setPrintingModeRecursive];
 395         } else {
 396             [self _web_clearPrintingModeRecursive];
 397         }
 398     }
 399
 400     [self _web_layoutIfNeededRecursive: rect testDirtyRect:YES];
 401
 402     [self _setAsideSubviews];
 403     [super _recursiveDisplayRectIfNeededIgnoringOpacity:rect isVisibleRect:isVisibleRect
 404         rectIsVisibleRectForView:visibleView topView:topView];
 405     [self _restoreSubviews];
 406
 407     if (wasInPrintingMode != isPrinting) {
 408         if (wasInPrintingMode) {
 409             [self _web_setPrintingModeRecursive];
 410         } else {
 411             [self _web_clearPrintingModeRecursive];
 412         }
 413     }
 414 }
 415
 416 // Don't let AppKit even draw subviews. We take care of that.
 417 - (void)_recursiveDisplayAllDirtyWithLockFocus:(BOOL)needsLockFocus visRect:(NSRect)visRect
 418 {
 419     BOOL needToSetAsideSubviews = !_private->subviewsSetAside;
 420
 421     BOOL wasInPrintingMode = _private->printing;
 422     BOOL isPrinting = ![NSGraphicsContext currentContextDrawingToScreen];
 423
 424     if (needToSetAsideSubviews) {
 425         // This helps when we print as part of a larger print process.
 426         // If the WebHTMLView itself is what we're printing, then we will never have to do this.
 427         if (wasInPrintingMode != isPrinting) {
 428             if (isPrinting) {
 429                 [self _web_setPrintingModeRecursive];
 430             } else {
 431                 [self _web_clearPrintingModeRecursive];
 432             }
 433         }
 434
 435         [self _web_layoutIfNeededRecursive: visRect testDirtyRect:NO];
 436
 437         [self _setAsideSubviews];
 438     }
 439
 440     [super _recursiveDisplayAllDirtyWithLockFocus:needsLockFocus visRect:visRect];
 441
 442     if (needToSetAsideSubviews) {
 443         if (wasInPrintingMode != isPrinting) {
 444             if (wasInPrintingMode) {
 445                 [self _web_setPrintingModeRecursive];
 446             } else {
 447                 [self _web_clearPrintingModeRecursive];
 448             }
 449         }
 450
 451         [self _restoreSubviews];
 452     }
 453 }
 454
 455 - (BOOL)_insideAnotherHTMLView
 456 {
 457     NSView *view = self;
 458     while ((view = [view superview])) {
 459         if ([view isKindOfClass:[WebHTMLView class]]) {
 460             return YES;
 461         }
 462     }
 463     return NO;
 464 }
 465
 466 - (void)scrollPoint:(NSPoint)point
 467 {
 468     // Since we can't subclass NSTextView to do what we want, we have to second guess it here.
 469     // If we get called during the handling of a key down event, we assume the call came from
 470     // NSTextView, and ignore it and use our own code to decide how to page up and page down
 471     // We are smarter about how far to scroll, and we have "superview scrolling" logic.
 472     NSEvent *event = [[self window] currentEvent];
 473     if ([event type] == NSKeyDown) {
 474         const unichar pageUp = NSPageUpFunctionKey;
 475         if ([[event characters] rangeOfString:[NSString stringWithCharacters:&pageUp length:1]].length == 1) {
 476             [self tryToPerform:@selector(scrollPageUp:) with:nil];
 477             return;
 478         }
 479         const unichar pageDown = NSPageDownFunctionKey;
 480         if ([[event characters] rangeOfString:[NSString stringWithCharacters:&pageDown length:1]].length == 1) {
 481             [self tryToPerform:@selector(scrollPageDown:) with:nil];
 482             return;
 483         }
 484     }
 485
 486     [super scrollPoint:point];
 487 }
 488
 489 - (NSView *)hitTest:(NSPoint)point
 490 {
 491     // WebHTMLView objects handle all left mouse clicks for objects inside them.
 492     // That does not include left mouse clicks with the control key held down.
 493     BOOL captureHitsOnSubviews;
 494     if (forceRealHitTest) {
 495         captureHitsOnSubviews = NO;
 496     } else {
 497         NSEvent *event = [[self window] currentEvent];
 498         captureHitsOnSubviews = [event type] == NSLeftMouseDown && ([event modifierFlags] & NSControlKeyMask) == 0;
 499     }
 500     if (!captureHitsOnSubviews) {
 501         return [super hitTest:point];
 502     }
 503     if ([[self superview] mouse:point inRect:[self frame]]) {
 504         return self;
 505     }
 506     return nil;
 507 }
 508
 509 static WebHTMLView *lastHitView = nil;
 510
 511 - (void)_clearLastHitViewIfSelf
 512 {
 513     if (lastHitView == self) {
 514         lastHitView = nil;
 515     }
 516 }
 517
 518 - (NSTrackingRectTag)addTrackingRect:(NSRect)rect owner:(id)owner userData:(void *)data assumeInside:(BOOL)assumeInside
 519 {
 520     ASSERT(_private->trackingRectOwner == nil);
 521     _private->trackingRectOwner = owner;
 522     _private->trackingRectUserData = data;
 523     return TRACKING_RECT_TAG;
 524 }
 525
 526 - (NSTrackingRectTag)_addTrackingRect:(NSRect)rect owner:(id)owner userData:(void *)data assumeInside:(BOOL)assumeInside useTrackingNum:(int)tag
 527 {
 528     ASSERT(tag == TRACKING_RECT_TAG);
 529     return [self addTrackingRect:rect owner:owner userData:data assumeInside:assumeInside];
 530 }
 531
 532 - (void)removeTrackingRect:(NSTrackingRectTag)tag
 533 {
 534     ASSERT(tag == TRACKING_RECT_TAG);
 535     if (_private != nil) {
 536         _private->trackingRectOwner = nil;
 537     }
 538 }
 539
 540 - (void)_sendToolTipMouseExited
 541 {
 542     // Nothing matters except window, trackingNumber, and userData.
 543     NSEvent *fakeEvent = [NSEvent enterExitEventWithType:NSMouseExited
 544         location:NSMakePoint(0, 0)
 545         modifierFlags:0
 546         timestamp:0
 547         windowNumber:[[self window] windowNumber]
 548         context:NULL
 549         eventNumber:0
 550         trackingNumber:TRACKING_RECT_TAG
 551         userData:_private->trackingRectUserData];
 552     [_private->trackingRectOwner mouseExited:fakeEvent];
 553 }
 554
 555 - (void)_sendToolTipMouseEntered
 556 {
 557     // Nothing matters except window, trackingNumber, and userData.
 558     NSEvent *fakeEvent = [NSEvent enterExitEventWithType:NSMouseEntered
 559         location:NSMakePoint(0, 0)
 560         modifierFlags:0
 561         timestamp:0
 562         windowNumber:[[self window] windowNumber]
 563         context:NULL
 564         eventNumber:0
 565         trackingNumber:TRACKING_RECT_TAG
 566         userData:_private->trackingRectUserData];
 567     [_private->trackingRectOwner mouseEntered:fakeEvent];
 568 }
 569
 570 - (void)_setToolTip:(NSString *)string
 571 {
 572     NSString *toolTip = [string length] == 0 ? nil : string;
 573     NSString *oldToolTip = _private->toolTip;
 574     if ((toolTip == nil || oldToolTip == nil) ? toolTip == oldToolTip : [toolTip isEqualToString:oldToolTip]) {
 575         return;
 576     }
 577     if (oldToolTip) {
 578         [self _sendToolTipMouseExited];
 579         [oldToolTip release];
 580     }
 581     _private->toolTip = [toolTip copy];
 582     if (toolTip) {
 583         [self removeAllToolTips];
 584         NSRect wideOpenRect = NSMakeRect(-100000, -100000, 200000, 200000);
 585         [self addToolTipRect:wideOpenRect owner:self userData:NULL];
 586         [self _sendToolTipMouseEntered];
 587     }
 588 }
 589
 590 - (NSString *)view:(NSView *)view stringForToolTip:(NSToolTipTag)tag point:(NSPoint)point userData:(void *)data
 591 {
 592     return [[_private->toolTip copy] autorelease];
 593 }
 594
 595 - (void)_updateMouseoverWithEvent:(NSEvent *)event
 596 {
 597     WebHTMLView *view = nil;
 598     if ([event window] == [self window]) {
 599         forceRealHitTest = YES;
 600         NSView *hitView = [[[self window] contentView] hitTest:[event locationInWindow]];
 601         forceRealHitTest = NO;
 602         while (hitView) {
 603             if ([hitView isKindOfClass:[WebHTMLView class]]) {
 604                 view = (WebHTMLView *)hitView;
 605                 break;
 606             }
 607             hitView = [hitView superview];
 608         }
 609     }
 610
 611     if (lastHitView != view && lastHitView != nil) {
 612         // If we are moving out of a view (or frame), let's pretend the mouse moved
 613         // all the way out of that view. But we have to account for scrolling, because
 614         // khtml doesn't understand our clipping.
 615         NSRect visibleRect = [[[[lastHitView _frame] frameView] _scrollView] documentVisibleRect];
 616         float yScroll = visibleRect.origin.y;
 617         float xScroll = visibleRect.origin.x;
 618
 619         event = [NSEvent mouseEventWithType:NSMouseMoved
 620                          location:NSMakePoint(-1 - xScroll, -1 - yScroll )
 621                          modifierFlags:[[NSApp currentEvent] modifierFlags]
 622                          timestamp:[NSDate timeIntervalSinceReferenceDate]
 623                          windowNumber:[[self window] windowNumber]
 624                          context:[[NSApp currentEvent] context]
 625                          eventNumber:0 clickCount:0 pressure:0];
 626         [[lastHitView _bridge] mouseMoved:event];
 627     }
 628
 629     lastHitView = view;
 630
 631     NSDictionary *element;
 632     if (view == nil) {
 633         element = nil;
 634     } else {
 635         [[view _bridge] mouseMoved:event];
 636
 637         NSPoint point = [view convertPoint:[event locationInWindow] fromView:nil];
 638         element = [view elementAtPoint:point];
 639     }
 640
 641     // Have the web view send a message to the delegate so it can do status bar display.
 642     [[self _webView] _mouseDidMoveOverElement:element modifierFlags:[event modifierFlags]];
 643
 644     // Set a tool tip; it won't show up right away but will if the user pauses.
 645     [self _setToolTip:[element objectForKey:WebCoreElementTitleKey]];
 646 }
 647
 648 + (NSArray *)_insertablePasteboardTypes
 649 {
 650     static NSArray *types = nil;
 651     if (!types) {
 652         types = [[NSArray alloc] initWithObjects:WebArchivePboardType, NSHTMLPboardType,
 653             NSFilenamesPboardType, NSTIFFPboardType, NSPICTPboardType, NSURLPboardType,
 654             NSRTFDPboardType, NSRTFPboardType, NSStringPboardType, nil];
 655     }
 656     return types;
 657 }
 658
 659 + (NSArray *)_selectionPasteboardTypes
 660 {
 661     // FIXME: We should put data for NSHTMLPboardType on the pasteboard but Microsoft Excel doesn't like our format of HTML (3640423).
 662     return [NSArray arrayWithObjects:WebArchivePboardType, NSRTFPboardType, NSRTFDPboardType, NSStringPboardType, nil];
 663 }
 664
 665 - (WebArchive *)_selectedArchive
 666 {
 667     NSArray *nodes;
 668     NSString *markupString = [[self _bridge] markupStringFromRange:[[self _bridge] selectedDOMRange] nodes:&nodes];
 669     return [[self _dataSource] _archiveWithMarkupString:markupString nodes:nodes];
 670 }
 671
 672 - (NSData *)_selectedRTFData
 673 {
 674     NSAttributedString *attributedString = [self selectedAttributedString];
 675     NSRange range = NSMakeRange(0, [attributedString length]);
 676     return [attributedString RTFFromRange:range documentAttributes:nil];
 677 }
 678
 679 - (void)_writeSelectionToPasteboard:(NSPasteboard *)pasteboard
 680 {
 681     ASSERT([self _haveSelection]);
 682     NSArray *types = [[self class] _selectionPasteboardTypes];
 683     [pasteboard declareTypes:types owner:nil];
 684     [self writeSelectionWithPasteboardTypes:types toPasteboard:pasteboard];
 685 }
 686
 687 - (BOOL)_haveSelection
 688 {
 689     return [[self _bridge] haveSelection];
 690 }
 691
 692 - (BOOL)_canDelete
 693 {
 694     return [self _haveSelection] && [[self _bridge] isSelectionEditable];
 695 }
 696
 697 - (BOOL)_canPaste
 698 {
 699     return [[self _bridge] isSelectionEditable];
 700 }
 701
 702 - (NSImage *)_dragImageForLinkElement:(NSDictionary *)element
 703 {
 704     NSURL *linkURL = [element objectForKey: WebElementLinkURLKey];
 705
 706     BOOL drawURLString = YES;
 707     BOOL clipURLString = NO, clipLabelString = NO;
 708
 709     NSString *label = [element objectForKey: WebElementLinkLabelKey];
 710     NSString *urlString = [linkURL _web_userVisibleString];
 711
 712     if (!label) {
 713         drawURLString = NO;
 714         label = urlString;
 715     }
 716
 717     NSFont *labelFont = [[NSFontManager sharedFontManager] convertFont:[NSFont systemFontOfSize:DRAG_LINK_LABEL_FONT_SIZE]
 718                                                    toHaveTrait:NSBoldFontMask];
 719     NSFont *urlFont = [NSFont systemFontOfSize: DRAG_LINK_URL_FONT_SIZE];
 720     NSSize labelSize;
 721     labelSize.width = [label _web_widthWithFont: labelFont];
 722     labelSize.height = [labelFont ascender] - [labelFont descender];
 723     if (labelSize.width > MAX_DRAG_LABEL_WIDTH){
 724         labelSize.width = MAX_DRAG_LABEL_WIDTH;
 725         clipLabelString = YES;
 726     }
 727
 728     NSSize imageSize, urlStringSize;
 729     imageSize.width = labelSize.width + DRAG_LABEL_BORDER_X * 2;
 730     imageSize.height = labelSize.height + DRAG_LABEL_BORDER_Y * 2;
 731     if (drawURLString) {
 732         urlStringSize.width = [urlString _web_widthWithFont: urlFont];
 733         urlStringSize.height = [urlFont ascender] - [urlFont descender];
 734         imageSize.height += urlStringSize.height;
 735         if (urlStringSize.width > MAX_DRAG_LABEL_WIDTH) {
 736             imageSize.width = MAX(MAX_DRAG_LABEL_WIDTH + DRAG_LABEL_BORDER_X * 2, MIN_DRAG_LABEL_WIDTH_BEFORE_CLIP);
 737             clipURLString = YES;
 738         } else {
 739             imageSize.width = MAX(labelSize.width + DRAG_LABEL_BORDER_X * 2, urlStringSize.width + DRAG_LABEL_BORDER_X * 2);
 740         }
 741     }
 742     NSImage *dragImage = [[[NSImage alloc] initWithSize: imageSize] autorelease];
 743     [dragImage lockFocus];
 744
 745     [[NSColor colorWithCalibratedRed: 0.7 green: 0.7 blue: 0.7 alpha: 0.8] set];
 746
 747     // Drag a rectangle with rounded corners/
 748     NSBezierPath *path = [NSBezierPath bezierPath];
 749     [path appendBezierPathWithOvalInRect: NSMakeRect(0,0, DRAG_LABEL_RADIUS * 2, DRAG_LABEL_RADIUS * 2)];
 750     [path appendBezierPathWithOvalInRect: NSMakeRect(0,imageSize.height - DRAG_LABEL_RADIUS * 2, DRAG_LABEL_RADIUS * 2, DRAG_LABEL_RADIUS * 2)];
 751     [path appendBezierPathWithOvalInRect: NSMakeRect(imageSize.width - DRAG_LABEL_RADIUS * 2, imageSize.height - DRAG_LABEL_RADIUS * 2, DRAG_LABEL_RADIUS * 2, DRAG_LABEL_RADIUS * 2)];
 752     [path appendBezierPathWithOvalInRect: NSMakeRect(imageSize.width - DRAG_LABEL_RADIUS * 2,0, DRAG_LABEL_RADIUS * 2, DRAG_LABEL_RADIUS * 2)];
 753
 754     [path appendBezierPathWithRect: NSMakeRect(DRAG_LABEL_RADIUS, 0, imageSize.width - DRAG_LABEL_RADIUS * 2, imageSize.height)];
 755     [path appendBezierPathWithRect: NSMakeRect(0, DRAG_LABEL_RADIUS, DRAG_LABEL_RADIUS + 10, imageSize.height - 2 * DRAG_LABEL_RADIUS)];
 756     [path appendBezierPathWithRect: NSMakeRect(imageSize.width - DRAG_LABEL_RADIUS - 20,DRAG_LABEL_RADIUS, DRAG_LABEL_RADIUS + 20, imageSize.height - 2 * DRAG_LABEL_RADIUS)];
 757     [path fill];
 758
 759     NSColor *topColor = [NSColor colorWithCalibratedWhite:0.0 alpha:0.75];
 760     NSColor *bottomColor = [NSColor colorWithCalibratedWhite:1.0 alpha:0.5];
 761     if (drawURLString) {
 762         if (clipURLString)
 763             urlString = [WebStringTruncator centerTruncateString: urlString toWidth:imageSize.width - (DRAG_LABEL_BORDER_X * 2) withFont:urlFont];
 764
 765         [urlString _web_drawDoubledAtPoint:NSMakePoint(DRAG_LABEL_BORDER_X, DRAG_LABEL_BORDER_Y - [urlFont descender])
 766              withTopColor:topColor bottomColor:bottomColor font:urlFont];
 767     }
 768
 769     if (clipLabelString)
 770         label = [WebStringTruncator rightTruncateString: label toWidth:imageSize.width - (DRAG_LABEL_BORDER_X * 2) withFont:labelFont];
 771     [label _web_drawDoubledAtPoint:NSMakePoint (DRAG_LABEL_BORDER_X, imageSize.height - DRAG_LABEL_BORDER_Y_OFFSET - [labelFont pointSize])
 772              withTopColor:topColor bottomColor:bottomColor font:labelFont];
 773
 774     [dragImage unlockFocus];
 775
 776     return dragImage;
 777 }
 778
 779 - (BOOL)_startDraggingImage:(NSImage *)wcDragImage at:(NSPoint)wcDragLoc operation:(NSDragOperation)op event:(NSEvent *)mouseDraggedEvent sourceIsDHTML:(BOOL)srcIsDHTML DHTMLWroteData:(BOOL)dhtmlWroteData
 780 {
 781     NSPoint mouseDownPoint = [self convertPoint:[_private->mouseDownEvent locationInWindow] fromView:nil];
 782     NSDictionary *element = [self elementAtPoint:mouseDownPoint];
 783
 784     NSURL *linkURL = [element objectForKey:WebElementLinkURLKey];
 785     NSURL *imageURL = [element objectForKey:WebElementImageURLKey];
 786     BOOL isSelected = [[element objectForKey:WebElementIsSelectedKey] boolValue];
 787
 788     [_private->draggingImageURL release];
 789     _private->draggingImageURL = nil;
 790
 791     NSPoint mouseDraggedPoint = [self convertPoint:[mouseDraggedEvent locationInWindow] fromView:nil];
 792     _private->webCoreDragOp = op;     // will be DragNone if WebCore doesn't care
 793     NSImage *dragImage = nil;
 794     NSPoint dragLoc;
 795
 796     // We allow WebCore to override the drag image, even if its a link, image or text we're dragging.
 797     // This is in the spirit of the IE API, which allows overriding of pasteboard data and DragOp.
 798     // We could verify that ActionDHTML is allowed, although WebCore does claim to respect the action.
 799     if (wcDragImage) {
 800         dragImage = wcDragImage;
 801         // wcDragLoc is the cursor position relative to the lower-left corner of the image.
 802         // We add in the Y dimension because we are a flipped view, so adding moves the image down.
 803         if (linkURL) {
 804             // see HACK below
 805             dragLoc = NSMakePoint(mouseDraggedPoint.x - wcDragLoc.x, mouseDraggedPoint.y + wcDragLoc.y);
 806         } else {
 807             dragLoc = NSMakePoint(mouseDownPoint.x - wcDragLoc.x, mouseDownPoint.y + wcDragLoc.y);
 808         }
 809         _private->dragOffset = wcDragLoc;
 810     }
 811
 812     WebView *webView = [self _webView];
 813     NSPasteboard *pasteboard = [NSPasteboard pasteboardWithName:NSDragPboard];
 814     WebImageRenderer *image = [element objectForKey:WebElementImageKey];
 815     BOOL startedDrag = YES;  // optimism - we almost always manage to start the drag
 816
 817     // note per kwebster, the offset arg below is always ignored in positioning the image
 818     if (imageURL != nil && image != nil && (_private->dragSourceActionMask & WebDragSourceActionImage)) {
 819         id source = self;
 820         if (!dhtmlWroteData) {
 821             _private->draggingImageURL = [imageURL retain];
 822             source = [pasteboard _web_declareAndWriteDragImage:image
 823                                                            URL:linkURL ? linkURL : imageURL
 824                                                          title:[element objectForKey:WebElementImageAltStringKey]
 825                                                        archive:[[element objectForKey:WebElementDOMNodeKey] webArchive]
 826                                                         source:self];
 827         }
 828         [[webView _UIDelegateForwarder] webView:webView willPerformDragSourceAction:WebDragSourceActionImage fromPoint:mouseDownPoint withPasteboard:pasteboard];
 829         if (dragImage == nil) {
 830             [self _web_dragImage:[element objectForKey:WebElementImageKey]
 831                             rect:[[element objectForKey:WebElementImageRectKey] rectValue]
 832                            event:_private->mouseDownEvent
 833                       pasteboard:pasteboard
 834                           source:source
 835                           offset:&_private->dragOffset];
 836         } else {
 837             [self dragImage:dragImage
 838                          at:dragLoc
 839                      offset:NSZeroSize
 840                       event:_private->mouseDownEvent
 841                  pasteboard:pasteboard
 842                      source:source
 843                   slideBack:YES];
 844         }
 845     } else if (linkURL && (_private->dragSourceActionMask & WebDragSourceActionLink)) {
 846         if (!dhtmlWroteData) {
 847             NSArray *types = [NSPasteboard _web_writableTypesForURL];
 848             [pasteboard declareTypes:types owner:self];
 849             [pasteboard _web_writeURL:linkURL andTitle:[element objectForKey:WebElementLinkLabelKey] types:types];
 850         }
 851         [[webView _UIDelegateForwarder] webView:webView willPerformDragSourceAction:WebDragSourceActionLink fromPoint:mouseDownPoint withPasteboard:pasteboard];
 852         if (dragImage == nil) {
 853             dragImage = [self _dragImageForLinkElement:element];
 854             NSSize offset = NSMakeSize([dragImage size].width / 2, -DRAG_LABEL_BORDER_Y);
 855             dragLoc = NSMakePoint(mouseDraggedPoint.x - offset.width, mouseDraggedPoint.y - offset.height);
 856             _private->dragOffset.x = offset.width;
 857             _private->dragOffset.y = -offset.height;        // inverted because we are flipped
 858         }
 859         // HACK:  We should pass the mouseDown event instead of the mouseDragged!  This hack gets rid of
 860         // a flash of the image at the mouseDown location when the drag starts.
 861         [self dragImage:dragImage
 862                      at:dragLoc
 863                  offset:NSZeroSize
 864                   event:mouseDraggedEvent
 865              pasteboard:pasteboard
 866                  source:self
 867               slideBack:YES];
 868     } else if (isSelected && (_private->dragSourceActionMask & WebDragSourceActionSelection)) {
 869         if (!dhtmlWroteData) {
 870             [self _writeSelectionToPasteboard:pasteboard];
 871         }
 872         [[webView _UIDelegateForwarder] webView:webView willPerformDragSourceAction:WebDragSourceActionSelection fromPoint:mouseDownPoint withPasteboard:pasteboard];
 873         if (dragImage == nil) {
 874             dragImage = [[self _bridge] selectionImage];
 875             [dragImage _web_dissolveToFraction:WebDragImageAlpha];
 876             NSRect visibleSelectionRect = [[self _bridge] visibleSelectionRect];
 877             dragLoc = NSMakePoint(NSMinX(visibleSelectionRect), NSMaxY(visibleSelectionRect));
 878             _private->dragOffset.x = mouseDownPoint.x - dragLoc.x;
 879             _private->dragOffset.y = dragLoc.y - mouseDownPoint.y;        // inverted because we are flipped
 880         }
 881         [self dragImage:dragImage
 882                      at:dragLoc
 883                  offset:NSZeroSize
 884                   event:_private->mouseDownEvent
 885              pasteboard:pasteboard
 886                  source:self
 887               slideBack:YES];
 888     } else if (srcIsDHTML) {
 889         ASSERT(_private->dragSourceActionMask & WebDragSourceActionDHTML);
 890         [[webView _UIDelegateForwarder] webView:webView willPerformDragSourceAction:WebDragSourceActionDHTML fromPoint:mouseDownPoint withPasteboard:pasteboard];
 891         if (dragImage == nil) {
 892             // WebCore should have given us an image, but we'll make one up
 893             NSString *imagePath = [[NSBundle bundleForClass:[self class]] pathForResource:@"missing_image" ofType:@"tiff"];
 894             dragImage = [[[NSImage alloc] initWithContentsOfFile:imagePath] autorelease];
 895             NSSize imageSize = [dragImage size];
 896             dragLoc = NSMakePoint(mouseDownPoint.x - imageSize.width/2, mouseDownPoint.y + imageSize.height/2);
 897             _private->dragOffset.x = imageSize.width/2;
 898             _private->dragOffset.y = imageSize.height/2;        // inverted because we are flipped
 899         }
 900         [self dragImage:dragImage
 901                      at:dragLoc
 902                  offset:NSZeroSize
 903                   event:_private->mouseDownEvent
 904              pasteboard:pasteboard
 905                  source:self
 906               slideBack:YES];
 907     } else {
 908         // Only way I know if to get here is if the original element clicked on in the mousedown is no longer
 909         // under the mousedown point, so linkURL, imageURL and isSelected are all false/nil.
 910         startedDrag = NO;
 911     }
 912     return startedDrag;
 913 }
 914
 915 - (void)_handleAutoscrollForMouseDragged:(NSEvent *)event
 916 {
 917     [self autoscroll:event];
 918     [self _startAutoscrollTimer:event];
 919 }
 920
 921 - (BOOL)_mayStartDragAtEventLocation:(NSPoint)location
 922 {
 923     NSPoint mouseDownPoint = [self convertPoint:location fromView:nil];
 924     NSDictionary *mouseDownElement = [self elementAtPoint:mouseDownPoint];
 925
 926     if ([mouseDownElement objectForKey: WebElementImageKey] != nil &&
 927         [mouseDownElement objectForKey: WebElementImageURLKey] != nil &&
 928         [[WebPreferences standardPreferences] loadsImagesAutomatically] &&
 929         (_private->dragSourceActionMask & WebDragSourceActionImage)) {
 930         return YES;
 931     }
 932
 933     if ([mouseDownElement objectForKey:WebElementLinkURLKey] != nil &&
 934         (_private->dragSourceActionMask & WebDragSourceActionLink)) {
 935         return YES;
 936     }
 937
 938     if ([[mouseDownElement objectForKey:WebElementIsSelectedKey] boolValue] &&
 939         (_private->dragSourceActionMask & WebDragSourceActionSelection)) {
 940         return YES;
 941     }
 942
 943     return NO;
 944 }
 945
 946 - (WebPluginController *)_pluginController
 947 {
 948     return _private->pluginController;
 949 }
 950
 951 - (void)_web_setPrintingModeRecursive
 952 {
 953     [self _setPrinting:YES minimumPageWidth:0.0 maximumPageWidth:0.0 adjustViewSize:NO];
 954     [super _web_setPrintingModeRecursive];
 955 }
 956
 957 - (void)_web_clearPrintingModeRecursive
 958 {
 959     [self _setPrinting:NO minimumPageWidth:0.0 maximumPageWidth:0.0 adjustViewSize:NO];
 960     [super _web_clearPrintingModeRecursive];
 961 }
 962
 963 - (void)_web_layoutIfNeededRecursive:(NSRect)displayRect testDirtyRect:(bool)testDirtyRect
 964 {
 965     ASSERT(!_private->subviewsSetAside);
 966     displayRect = NSIntersectionRect(displayRect, [self bounds]);
 967
 968     if (!testDirtyRect || [self needsDisplay]) {
 969         if (testDirtyRect) {
 970             NSRect dirtyRect = [self _dirtyRect];
 971             displayRect = NSIntersectionRect(displayRect, dirtyRect);
 972         }
 973         if (!NSIsEmptyRect(displayRect)) {
 974             if ([[self _bridge] needsLayout])
 975                 _private->needsLayout = YES;
 976             if (_private->needsToApplyStyles || _private->needsLayout)
 977                 [self layout];
 978         }
 979     }
 980
 981     [super _web_layoutIfNeededRecursive: displayRect testDirtyRect: NO];
 982 }
 983
 984 - (NSRect)_selectionRect
 985 {
 986     return [[self _bridge] selectionRect];
 987 }
 988
 989 - (void)_startAutoscrollTimer: (NSEvent *)triggerEvent
 990 {
 991     if (_private->autoscrollTimer == nil) {
 992         _private->autoscrollTimer = [[NSTimer scheduledTimerWithTimeInterval:AUTOSCROLL_INTERVAL
 993             target:self selector:@selector(_autoscroll) userInfo:nil repeats:YES] retain];
 994         _private->autoscrollTriggerEvent = [triggerEvent retain];
 995     }
 996 }
 997
 998 - (void)_stopAutoscrollTimer
 999 {
1000     NSTimer *timer = _private->autoscrollTimer;
1001     _private->autoscrollTimer = nil;
1002     [_private->autoscrollTriggerEvent release];
1003     _private->autoscrollTriggerEvent = nil;
1004     [timer invalidate];
1005     [timer release];
1006 }
1007
1008 - (void)_autoscroll
1009 {
1010     int isStillDown;
1011
1012     // Guarantee that the autoscroll timer is invalidated, even if we don't receive
1013     // a mouse up event.
1014     PSstilldown([_private->autoscrollTriggerEvent eventNumber], &isStillDown);
1015     if (!isStillDown){
1016         [self _stopAutoscrollTimer];
1017         return;
1018     }
1019
1020     NSEvent *fakeEvent = [NSEvent mouseEventWithType:NSLeftMouseDragged
1021         location:[[self window] convertScreenToBase:[NSEvent mouseLocation]]
1022         modifierFlags:[[NSApp currentEvent] modifierFlags]
1023         timestamp:[NSDate timeIntervalSinceReferenceDate]
1024         windowNumber:[[self window] windowNumber]
1025         context:[[NSApp currentEvent] context]
1026         eventNumber:0 clickCount:0 pressure:0];
1027     [self mouseDragged:fakeEvent];
1028 }
1029
1030 @end
1031
1032 @implementation NSView (WebHTMLViewPrivate)
1033
1034 - (void)_web_setPrintingModeRecursive
1035 {
1036     [_subviews makeObjectsPerformSelector:@selector(_web_setPrintingModeRecursive)];
1037 }
1038
1039 - (void)_web_clearPrintingModeRecursive
1040 {
1041     [_subviews makeObjectsPerformSelector:@selector(_web_clearPrintingModeRecursive)];
1042 }
1043
1044 - (void)_web_layoutIfNeededRecursive: (NSRect)rect testDirtyRect:(bool)testDirtyRect
1045 {
1046     unsigned index, count;
1047     for (index = 0, count = [_subviews count]; index < count; index++) {
1048         NSView *subview = [_subviews objectAtIndex:index];
1049         NSRect dirtiedSubviewRect = [subview convertRect: rect fromView: self];
1050         [subview _web_layoutIfNeededRecursive: dirtiedSubviewRect testDirtyRect:testDirtyRect];
1051     }
1052 }
1053
1054 @end
1055
1056 @implementation NSMutableDictionary (WebHTMLViewPrivate)
1057
1058 - (void)_web_setObjectIfNotNil:(id)object forKey:(id)key
1059 {
1060     if (object == nil) {
1061         [self removeObjectForKey:key];
1062     } else {
1063         [self setObject:object forKey:key];
1064     }
1065 }
1066
1067 @end
1068
1069 // The following is a workaround for
1070 // <rdar://problem/3429631> window stops getting mouse moved events after first tooltip appears
1071 // The trick is to define a category on NSToolTipPanel that implements setAcceptsMouseMovedEvents:.
1072 // Since the category will be searched before the real class, we'll prevent the flag from being
1073 // set on the tool tip panel.
1074
1075 @interface NSToolTipPanel : NSPanel
1076 @end
1077
1078 @interface NSToolTipPanel (WebHTMLViewPrivate)
1079 @end
1080
1081 @implementation NSToolTipPanel (WebHTMLViewPrivate)
1082
1083 - (void)setAcceptsMouseMovedEvents:(BOOL)flag
1084 {
1085     // Do nothing, preventing the tool tip panel from trying to accept mouse-moved events.
1086 }
1087
1088 @end
1089
1090
1091 @interface WebHTMLView (TextSizing) <_web_WebDocumentTextSizing>
1092 @end
1093
1094 @interface NSArray (WebHTMLView)
1095 - (void)_web_makePluginViewsPerformSelector:(SEL)selector withObject:(id)object;
1096 @end
1097
1098 @implementation WebHTMLView
1099
1100 + (void)initialize
1101 {
1102     WebKitInitializeUnicode();
1103     [NSApp registerServicesMenuSendTypes:[[self class] _selectionPasteboardTypes] returnTypes:nil];
1104 }
1105
1106 - (id)initWithFrame:(NSRect)frame
1107 {
1108     [super initWithFrame:frame];
1109
1110     // Make all drawing go through us instead of subviews.
1111     // The bulk of the code to handle this is in WebHTMLViewPrivate.m.
1112     if (NSAppKitVersionNumber >= 711) {
1113         [self _setDrawsOwnDescendants:YES];
1114     }
1115
1116     _private = [[WebHTMLViewPrivate alloc] init];
1117
1118     _private->pluginController = [[WebPluginController alloc] initWithHTMLView:self];
1119     _private->needsLayout = YES;
1120
1121     return self;
1122 }
1123
1124 - (void)dealloc
1125 {
1126     [self _clearLastHitViewIfSelf];
1127     [self _reset];
1128     [[NSNotificationCenter defaultCenter] removeObserver:self];
1129     [_private->pluginController destroyAllPlugins];
1130     [_private release];
1131     _private = nil;
1132     [super dealloc];
1133 }
1134
1135 - (void)finalize
1136 {
1137     [self _clearLastHitViewIfSelf];
1138     [self _reset];
1139     [[NSNotificationCenter defaultCenter] removeObserver:self];
1140     [_private->pluginController destroyAllPlugins];
1141     _private = nil;
1142     [super finalize];
1143 }
1144
1145 - (IBAction)takeFindStringFromSelection:(id)sender
1146 {
1147     if (![self _haveSelection]) {
1148         NSBeep();
1149         return;
1150     }
1151
1152     [NSPasteboard _web_setFindPasteboardString:[self selectedString] withOwner:self];
1153 }
1154
1155 - (NSArray *)pasteboardTypesForSelection
1156 {
1157     return [[self class] _selectionPasteboardTypes];
1158 }
1159
1160 - (void)writeSelectionWithPasteboardTypes:(NSArray *)types toPasteboard:(NSPasteboard *)pasteboard
1161 {
1162     // Put HTML on the pasteboard.
1163     if ([types containsObject:WebArchivePboardType]) {
1164         WebArchive *archive = [self _selectedArchive];
1165         [pasteboard setData:[archive data] forType:WebArchivePboardType];
1166     }
1167
1168     // Put attributed string on the pasteboard (RTF format).
1169     NSData *RTFData = nil;
1170     if ([types containsObject:NSRTFPboardType]) {
1171         RTFData = [self _selectedRTFData];
1172         [pasteboard setData:RTFData forType:NSRTFPboardType];
1173     }
1174     if ([types containsObject:NSRTFDPboardType]) {
1175         if (!RTFData) {
1176             RTFData = [self _selectedRTFData];
1177         }
1178         [pasteboard setData:RTFData forType:NSRTFDPboardType];
1179     }
1180
1181     // Put plain string on the pasteboard.
1182     if ([types containsObject:NSStringPboardType]) {
1183         // Map &nbsp; to a plain old space because this is better for source code, other browsers do it,
1184         // and because HTML forces you to do this any time you want two spaces in a row.
1185         NSMutableString *s = [[self selectedString] mutableCopy];
1186         const unichar NonBreakingSpaceCharacter = 0xA0;
1187         NSString *NonBreakingSpaceString = [NSString stringWithCharacters:&NonBreakingSpaceCharacter length:1];
1188         [s replaceOccurrencesOfString:NonBreakingSpaceString withString:@" " options:0 range:NSMakeRange(0, [s length])];
1189         [pasteboard setString:s forType:NSStringPboardType];
1190         [s release];
1191     }
1192 }
1193
1194 - (BOOL)writeSelectionToPasteboard:(NSPasteboard *)pasteboard types:(NSArray *)types
1195 {
1196     [self _writeSelectionToPasteboard:pasteboard];
1197     return YES;
1198 }
1199
1200 - (void)selectAll:(id)sender
1201 {
1202     [self selectAll];
1203 }
1204
1205 - (void)jumpToSelection: sender
1206 {
1207     [[self _bridge] jumpToSelection];
1208 }
1209
1210 - (BOOL)validateUserInterfaceItem:(id <NSValidatedUserInterfaceItem>)item
1211 {
1212     SEL action = [item action];
1213     WebBridge *bridge = [self _bridge];
1214
1215     if (action == @selector(cut:)) {
1216         return [bridge mayDHTMLCut] || [self _canDelete];
1217     } else if (action == @selector(copy:)) {
1218         return [bridge mayDHTMLCopy] || [self _haveSelection];
1219     } else if (action == @selector(delete:)) {
1220         return [self _canDelete];
1221     } else if (action == @selector(paste:)) {
1222         return [bridge mayDHTMLPaste] || [self _canPaste];
1223     } else if (action == @selector(takeFindStringFromSelection:)) {
1224         return [self _haveSelection];
1225     } else if (action == @selector(jumpToSelection:)) {
1226         return [self _haveSelection];
1227     }
1228
1229     return YES;
1230 }
1231
1232 - (id)validRequestorForSendType:(NSString *)sendType returnType:(NSString *)returnType
1233 {
1234     if (sendType && ([[[self class] _selectionPasteboardTypes] containsObject:sendType]) && [self _haveSelection]){
1235         return self;
1236     }
1237
1238     return [super validRequestorForSendType:sendType returnType:returnType];
1239 }
1240
1241 - (BOOL)acceptsFirstResponder
1242 {
1243     // Don't accept first responder when we first click on this view.
1244     // We have to pass the event down through WebCore first to be sure we don't hit a subview.
1245     // Do accept first responder at any other time, for example from keyboard events,
1246     // or from calls back from WebCore once we begin mouse-down event handling.
1247     NSEvent *event = [NSApp currentEvent];
1248     if ([event type] == NSLeftMouseDown && event != _private->mouseDownEvent &&
1249         NSPointInRect([event locationInWindow], [self convertRect:[self visibleRect] toView:nil])) {
1250         return NO;
1251     }
1252     return YES;
1253 }
1254
1255 - (void)updateTextBackgroundColor
1256 {
1257     NSWindow *window = [self window];
1258     BOOL shouldUseInactiveTextBackgroundColor = !([window isKeyWindow] && [window firstResponder] == self) ||
1259         _private->resigningFirstResponder;
1260     WebBridge *bridge = [self _bridge];
1261     if ([bridge usesInactiveTextBackgroundColor] != shouldUseInactiveTextBackgroundColor) {
1262         [bridge setUsesInactiveTextBackgroundColor:shouldUseInactiveTextBackgroundColor];
1263         [self setNeedsDisplayInRect:[bridge visibleSelectionRect]];
1264     }
1265 }
1266
1267 - (void)setCaretVisible:(BOOL)flag
1268 {
1269     [[self _bridge] setCaretVisible:flag];
1270 }
1271
1272 - (BOOL)maintainsInactiveSelection
1273 {
1274     // This method helps to determing whether the view should maintain
1275     // an inactive selection when the view is not first responder.
1276     // Traditionally, these views have not maintained such selections,
1277     // clearing them when the view was not first responder. However,
1278     // to fix bugs like this one:
1279     // <rdar://problem/3672088>: "Editable WebViews should maintain a selection even
1280     //                            when they're not firstResponder"
1281     // it was decided to add a switch to act more like an NSTextView.
1282     // For now, however, the view only acts in this way when the
1283     // web view is set to be editable. This will maintain traditional
1284     // behavior for WebKit clients dating back to before this change,
1285     // and will likely be a decent switch for the long term, since
1286     // clients to ste the web view to be editable probably want it
1287     // to act like a "regular" Cocoa view in terms of its selection
1288     // behavior.
1289     if (![[self _webView] isEditable])
1290         return NO;
1291
1292     id nextResponder = [[self window] _newFirstResponderAfterResigning];
1293     return !nextResponder || ![nextResponder isKindOfClass:[NSView class]] || ![nextResponder isDescendantOf:[self _webView]];
1294 }
1295
1296 - (void)addMouseMovedObserver
1297 {
1298     if ([[self window] isKeyWindow] && ![self _insideAnotherHTMLView]) {
1299         [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(mouseMovedNotification:)
1300             name:NSMouseMovedNotification object:nil];
1301         [self _frameOrBoundsChanged];
1302     }
1303 }
1304
1305 - (void)removeMouseMovedObserver
1306 {
1307     [[self _webView] _mouseDidMoveOverElement:nil modifierFlags:0];
1308     [[NSNotificationCenter defaultCenter] removeObserver:self
1309         name:NSMouseMovedNotification object:nil];
1310 }
1311
1312 - (void)updateShowsFirstResponder
1313 {
1314     [[self _bridge] setShowsFirstResponder:[[self window] isKeyWindow]];
1315 }
1316
1317 - (void)addSuperviewObservers
1318 {
1319     // We watch the bounds of our superview, so that we can do a layout when the size
1320     // of the superview changes. This is different from other scrollable things that don't
1321     // need this kind of thing because their layout doesn't change.
1322
1323     // We need to pay attention to both height and width because our "layout" has to change
1324     // to extend the background the full height of the space and because some elements have
1325     // sizes that are based on the total size of the view.
1326
1327     NSView *superview = [self superview];
1328     if (superview && [self window]) {
1329         [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(_frameOrBoundsChanged)
1330             name:NSViewFrameDidChangeNotification object:superview];
1331         [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(_frameOrBoundsChanged)
1332             name:NSViewBoundsDidChangeNotification object:superview];
1333     }
1334 }
1335
1336 - (void)removeSuperviewObservers
1337 {
1338     NSView *superview = [self superview];
1339     if (superview && [self window]) {
1340         [[NSNotificationCenter defaultCenter] removeObserver:self
1341             name:NSViewFrameDidChangeNotification object:superview];
1342         [[NSNotificationCenter defaultCenter] removeObserver:self
1343             name:NSViewBoundsDidChangeNotification object:superview];
1344     }
1345 }
1346
1347 - (void)addWindowObservers
1348 {
1349     NSWindow *window = [self window];
1350     if (window) {
1351         [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(windowDidBecomeKey:)
1352             name:NSWindowDidBecomeKeyNotification object:window];
1353         [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(windowDidResignKey:)
1354             name:NSWindowDidResignKeyNotification object:window];
1355         [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(windowWillClose:)
1356             name:NSWindowWillCloseNotification object:window];
1357     }
1358 }
1359
1360 - (void)removeWindowObservers
1361 {
1362     NSWindow *window = [self window];
1363     if (window) {
1364         [[NSNotificationCenter defaultCenter] removeObserver:self
1365             name:NSWindowDidBecomeKeyNotification object:window];
1366         [[NSNotificationCenter defaultCenter] removeObserver:self
1367             name:NSWindowDidResignKeyNotification object:window];
1368         [[NSNotificationCenter defaultCenter] removeObserver:self
1369             name:NSWindowWillCloseNotification object:window];
1370     }
1371 }
1372
1373 - (void)viewWillMoveToSuperview:(NSView *)newSuperview
1374 {
1375     [self removeSuperviewObservers];
1376 }
1377
1378 - (void)viewDidMoveToSuperview
1379 {
1380     // Do this here in case the text size multiplier changed when a non-HTML
1381     // view was installed.
1382     if ([self superview] != nil) {
1383         [self _updateTextSizeMultiplier];
1384         [self addSuperviewObservers];
1385     }
1386 }
1387
1388 - (void)viewWillMoveToWindow:(NSWindow *)window
1389 {
1390     // Don't do anything if we aren't initialized.  This happens
1391     // when decoding a WebView.  When WebViews are decoded their subviews
1392     // are created by initWithCoder: and so won't be normally
1393     // initialized.  The stub views are discarded by WebView.
1394     if (_private){
1395         // FIXME: Some of these calls may not work because this view may be already removed from it's superview.
1396         [self removeMouseMovedObserver];
1397         [self removeWindowObservers];
1398         [self removeSuperviewObservers];
1399         [NSObject cancelPreviousPerformRequestsWithTarget:self selector:@selector(_updateMouseoverWithFakeEvent) object:nil];
1400
1401         [[self _pluginController] stopAllPlugins];
1402     }
1403 }
1404
1405 - (void)viewDidMoveToWindow
1406 {
1407     // Don't do anything if we aren't initialized.  This happens
1408     // when decoding a WebView.  When WebViews are decoded their subviews
1409     // are created by initWithCoder: and so won't be normally
1410     // initialized.  The stub views are discarded by WebView.
1411     if (_private) {
1412         [self _stopAutoscrollTimer];
1413         if ([self window]) {
1414             _private->lastScrollPosition = [[self superview] bounds].origin;
1415             [self addWindowObservers];
1416             [self addSuperviewObservers];
1417             [self addMouseMovedObserver];
1418             [self updateTextBackgroundColor];
1419
1420             [[self _pluginController] startAllPlugins];
1421
1422             _private->lastScrollPosition = NSZeroPoint;
1423
1424             _private->inWindow = YES;
1425         } else {
1426             // Reset when we are moved out of a window after being moved into one.
1427             // Without this check, we reset ourselves before we even start.
1428             // This is only needed because viewDidMoveToWindow is called even when
1429             // the window is not changing (bug in AppKit).
1430             if (_private->inWindow) {
1431                 [self _reset];
1432                 _private->inWindow = NO;
1433             }
1434         }
1435     }
1436 }
1437
1438 - (void)viewWillMoveToHostWindow:(NSWindow *)hostWindow
1439 {
1440     [[self subviews] _web_makePluginViewsPerformSelector:@selector(viewWillMoveToHostWindow:) withObject:hostWindow];
1441 }
1442
1443 - (void)viewDidMoveToHostWindow
1444 {
1445     [[self subviews] _web_makePluginViewsPerformSelector:@selector(viewDidMoveToHostWindow) withObject:nil];
1446 }
1447
1448
1449 - (void)addSubview:(NSView *)view
1450 {
1451     [super addSubview:view];
1452
1453     if ([[view class] respondsToSelector:@selector(plugInViewWithArguments:)] || [view respondsToSelector:@selector(pluginInitialize)]) {
1454         [[self _pluginController] addPlugin:view];
1455     }
1456 }
1457
1458 - (void)reapplyStyles
1459 {
1460     if (!_private->needsToApplyStyles) {
1461         return;
1462     }
1463
1464 #ifdef _KWQ_TIMING
1465     double start = CFAbsoluteTimeGetCurrent();
1466 #endif
1467
1468     [[self _bridge] reapplyStylesForDeviceType:
1469         _private->printing ? WebCoreDevicePrinter : WebCoreDeviceScreen];
1470
1471 #ifdef _KWQ_TIMING
1472     double thisTime = CFAbsoluteTimeGetCurrent() - start;
1473     LOG(Timing, "%s apply style seconds = %f", [self URL], thisTime);
1474 #endif
1475
1476     _private->needsToApplyStyles = NO;
1477 }
1478
1479 // Do a layout, but set up a new fixed width for the purposes of doing printing layout.
1480 // minPageWidth==0 implies a non-printing layout
1481 - (void)layoutToMinimumPageWidth:(float)minPageWidth maximumPageWidth:(float)maxPageWidth adjustingViewSize:(BOOL)adjustViewSize
1482 {
1483     [self reapplyStyles];
1484
1485     // Ensure that we will receive mouse move events.  Is this the best place to put this?
1486     [[self window] setAcceptsMouseMovedEvents: YES];
1487     [[self window] _setShouldPostEventNotifications: YES];
1488
1489     if (!_private->needsLayout) {
1490         return;
1491     }
1492
1493 #ifdef _KWQ_TIMING
1494     double start = CFAbsoluteTimeGetCurrent();
1495 #endif
1496
1497     LOG(View, "%@ doing layout", self);
1498
1499     if (minPageWidth > 0.0) {
1500         [[self _bridge] forceLayoutWithMinimumPageWidth:minPageWidth maximumPageWidth:maxPageWidth adjustingViewSize:adjustViewSize];
1501     } else {
1502         [[self _bridge] forceLayoutAdjustingViewSize:adjustViewSize];
1503     }
1504     _private->needsLayout = NO;
1505
1506     if (!_private->printing) {
1507         // get size of the containing dynamic scrollview, so
1508         // appearance and disappearance of scrollbars will not show up
1509         // as a size change
1510         NSSize newLayoutFrameSize = [[[self superview] superview] frame].size;
1511         if (_private->laidOutAtLeastOnce && !NSEqualSizes(_private->lastLayoutFrameSize, newLayoutFrameSize)) {
1512             [[self _bridge] sendResizeEvent];
1513         }
1514         _private->laidOutAtLeastOnce = YES;
1515         _private->lastLayoutSize = [(NSClipView *)[self superview] documentVisibleRect].size;
1516         _private->lastLayoutFrameSize = newLayoutFrameSize;
1517     }
1518
1519 #ifdef _KWQ_TIMING
1520     double thisTime = CFAbsoluteTimeGetCurrent() - start;
1521     LOG(Timing, "%s layout seconds = %f", [self URL], thisTime);
1522 #endif
1523 }
1524
1525 - (void)layout
1526 {
1527     [self layoutToMinimumPageWidth:0.0 maximumPageWidth:0.0 adjustingViewSize:NO];
1528 }
1529
1530 - (NSMenu *)menuForEvent:(NSEvent *)event
1531 {
1532     if ([[self _bridge] sendContextMenuEvent:event]) {
1533         return nil;
1534     }
1535     NSPoint point = [self convertPoint:[event locationInWindow] fromView:nil];
1536     NSDictionary *element = [self elementAtPoint:point];
1537     return [[self _webView] _menuForElement:element];
1538 }
1539
1540 // Search from the end of the currently selected location, or from the beginning of the
1541 // document if nothing is selected.
1542 - (BOOL)searchFor:(NSString *)string direction:(BOOL)forward caseSensitive:(BOOL)caseFlag wrap:(BOOL)wrapFlag;
1543 {
1544     return [[self _bridge] searchFor:string direction:forward caseSensitive:caseFlag wrap:wrapFlag];
1545 }
1546
1547 - (NSString *)string
1548 {
1549     return [[self attributedString] string];
1550 }
1551
1552 - (NSAttributedString *)attributedString
1553 {
1554     WebBridge *b = [self _bridge];
1555     return [b attributedStringFrom:[b DOMDocument]
1556                        startOffset:0
1557                                 to:nil
1558                          endOffset:0];
1559 }
1560
1561 - (NSString *)selectedString
1562 {
1563     return [[self _bridge] selectedString];
1564 }
1565
1566 // Get an attributed string that represents the current selection.
1567 - (NSAttributedString *)selectedAttributedString
1568 {
1569     return [[self _bridge] selectedAttributedString];
1570 }
1571
1572 - (void)selectAll
1573 {
1574     [[self _bridge] selectAll];
1575 }
1576
1577 // Remove the selection.
1578 - (void)deselectAll
1579 {
1580     [[self _bridge] deselectAll];
1581 }
1582
1583 - (void)deselectText
1584 {
1585     [[self _bridge] deselectText];
1586 }
1587
1588 - (BOOL)isOpaque
1589 {
1590     return [[self _webView] drawsBackground];
1591 }
1592
1593 - (void)setNeedsDisplay:(BOOL)flag
1594 {
1595     LOG(View, "%@ flag = %d", self, (int)flag);
1596     [super setNeedsDisplay: flag];
1597 }
1598
1599 - (void)setNeedsLayout: (BOOL)flag
1600 {
1601     LOG(View, "%@ flag = %d", self, (int)flag);
1602     _private->needsLayout = flag;
1603 }
1604
1605
1606 - (void)setNeedsToApplyStyles: (BOOL)flag
1607 {
1608     LOG(View, "%@ flag = %d", self, (int)flag);
1609     _private->needsToApplyStyles = flag;
1610 }
1611
1612 - (void)drawRect:(NSRect)rect
1613 {
1614     LOG(View, "%@ drawing", self);
1615
1616     BOOL subviewsWereSetAside = _private->subviewsSetAside;
1617     if (subviewsWereSetAside) {
1618         [self _restoreSubviews];
1619     }
1620
1621 #ifdef _KWQ_TIMING
1622     double start = CFAbsoluteTimeGetCurrent();
1623 #endif
1624
1625     [NSGraphicsContext saveGraphicsState];
1626     NSRectClip(rect);
1627
1628     ASSERT([[self superview] isKindOfClass:[WebClipView class]]);
1629
1630     [(WebClipView *)[self superview] setAdditionalClip:rect];
1631
1632     NS_DURING {
1633         WebTextRendererFactory *textRendererFactoryIfCoalescing = nil;
1634         if ([WebTextRenderer shouldBufferTextDrawing] && [NSView focusView]) {
1635             textRendererFactoryIfCoalescing = [WebTextRendererFactory sharedFactory];
1636             [textRendererFactoryIfCoalescing startCoalesceTextDrawing];
1637         }
1638
1639         if (![[self _webView] drawsBackground]) {
1640             [[NSColor clearColor] set];
1641             NSRectFill (rect);
1642         }
1643
1644         //double start = CFAbsoluteTimeGetCurrent();
1645         [[self _bridge] drawRect:rect];
1646         //LOG(Timing, "draw time %e", CFAbsoluteTimeGetCurrent() - start);
1647
1648         if (textRendererFactoryIfCoalescing != nil) {
1649             [textRendererFactoryIfCoalescing endCoalesceTextDrawing];
1650         }
1651
1652         [(WebClipView *)[self superview] resetAdditionalClip];
1653
1654         [NSGraphicsContext restoreGraphicsState];
1655     } NS_HANDLER {
1656         [(WebClipView *)[self superview] resetAdditionalClip];
1657         [NSGraphicsContext restoreGraphicsState];
1658         ERROR("Exception caught while drawing: %@", localException);
1659         [localException raise];
1660     } NS_ENDHANDLER
1661
1662 #ifdef DEBUG_LAYOUT
1663     NSRect vframe = [self frame];
1664     [[NSColor blackColor] set];
1665     NSBezierPath *path;
1666     path = [NSBezierPath bezierPath];
1667     [path setLineWidth:(float)0.1];
1668     [path moveToPoint:NSMakePoint(0, 0)];
1669     [path lineToPoint:NSMakePoint(vframe.size.width, vframe.size.height)];
1670     [path closePath];
1671     [path stroke];
1672     path = [NSBezierPath bezierPath];
1673     [path setLineWidth:(float)0.1];
1674     [path moveToPoint:NSMakePoint(0, vframe.size.height)];
1675     [path lineToPoint:NSMakePoint(vframe.size.width, 0)];
1676     [path closePath];
1677     [path stroke];
1678 #endif
1679
1680 #ifdef _KWQ_TIMING
1681     double thisTime = CFAbsoluteTimeGetCurrent() - start;
1682     LOG(Timing, "%s draw seconds = %f", widget->part()->baseURL().URL().latin1(), thisTime);
1683 #endif
1684
1685     if (subviewsWereSetAside) {
1686         [self _setAsideSubviews];
1687     }
1688 }
1689
1690 // Turn off the additional clip while computing our visibleRect.
1691 - (NSRect)visibleRect
1692 {
1693     if (!([[self superview] isKindOfClass:[WebClipView class]]))
1694         return [super visibleRect];
1695
1696     WebClipView *clipView = (WebClipView *)[self superview];
1697
1698     BOOL hasAdditionalClip = [clipView hasAdditionalClip];
1699     if (!hasAdditionalClip) {
1700         return [super visibleRect];
1701     }
1702
1703     NSRect additionalClip = [clipView additionalClip];
1704     [clipView resetAdditionalClip];
1705     NSRect visibleRect = [super visibleRect];
1706     [clipView setAdditionalClip:additionalClip];
1707     return visibleRect;
1708 }
1709
1710 - (BOOL)isFlipped
1711 {
1712     return YES;
1713 }
1714
1715 - (void)windowDidBecomeKey:(NSNotification *)notification
1716 {
1717     ASSERT([notification object] == [self window]);
1718     [self addMouseMovedObserver];
1719     if ([self firstResponderIsSelfOrDescendantView]) {
1720         [self updateTextBackgroundColor];
1721         [self updateShowsFirstResponder];
1722     }
1723 }
1724
1725 - (void)windowDidResignKey: (NSNotification *)notification
1726 {
1727     ASSERT([notification object] == [self window]);
1728     [self removeMouseMovedObserver];
1729     if ([self firstResponderIsSelfOrDescendantView]) {
1730         [self updateTextBackgroundColor];
1731         [self updateShowsFirstResponder];
1732     }
1733 }
1734
1735 - (void)windowWillClose:(NSNotification *)notification
1736 {
1737     [[self _pluginController] destroyAllPlugins];
1738 }
1739
1740 - (BOOL)acceptsFirstMouse:(NSEvent *)event
1741 {
1742     // We hack AK's hitTest method to catch all events at the topmost WebHTMLView.  However, for
1743     // the purposes of this method we want to really query the deepest view, so we forward to it.
1744     forceRealHitTest = YES;
1745     NSView *hitView = [[[self window] contentView] hitTest:[event locationInWindow]];
1746     forceRealHitTest = NO;
1747
1748     if ([hitView isKindOfClass:[self class]]) {
1749         WebHTMLView *hitHTMLView = (WebHTMLView *)hitView;
1750         [[hitHTMLView _bridge] setActivationEventNumber:[event eventNumber]];
1751         return [[hitHTMLView _bridge] eventMayStartDrag:event];
1752     } else {
1753         return [hitView acceptsFirstMouse:event];
1754     }
1755 }
1756
1757 - (BOOL)shouldDelayWindowOrderingForEvent:(NSEvent *)event
1758 {
1759     // We hack AK's hitTest method to catch all events at the topmost WebHTMLView.  However, for
1760     // the purposes of this method we want to really query the deepest view, so we forward to it.
1761     forceRealHitTest = YES;
1762     NSView *hitView = [[[self window] contentView] hitTest:[event locationInWindow]];
1763     forceRealHitTest = NO;
1764
1765     if ([hitView isKindOfClass:[self class]]) {
1766         WebHTMLView *hitHTMLView = (WebHTMLView *)hitView;
1767         return [[hitHTMLView _bridge] eventMayStartDrag:event];
1768     } else {
1769         return [hitView shouldDelayWindowOrderingForEvent:event];
1770     }
1771 }
1772
1773 - (void)mouseDown:(NSEvent *)event
1774 {
1775     // If the web page handles the context menu event and menuForEvent: returns nil, we'll get control click events here.
1776     // We don't want to pass them along to KHTML a second time.
1777     if ([event modifierFlags] & NSControlKeyMask) {
1778         return;
1779     }
1780
1781     _private->ignoringMouseDraggedEvents = NO;
1782
1783     // Record the mouse down position so we can determine drag hysteresis.
1784     [_private->mouseDownEvent release];
1785     _private->mouseDownEvent = [event retain];
1786
1787     // Don't do any mouseover while the mouse is down.
1788     [NSObject cancelPreviousPerformRequestsWithTarget:self selector:@selector(_updateMouseoverWithFakeEvent) object:nil];
1789
1790     // Let KHTML get a chance to deal with the event. This will call back to us
1791     // to start the autoscroll timer if appropriate.
1792     [[self _bridge] mouseDown:event];
1793 }
1794
1795 - (void)dragImage:(NSImage *)dragImage
1796                at:(NSPoint)at
1797            offset:(NSSize)offset
1798             event:(NSEvent *)event
1799        pasteboard:(NSPasteboard *)pasteboard
1800            source:(id)source
1801         slideBack:(BOOL)slideBack
1802 {
1803     [self _stopAutoscrollTimer];
1804
1805     _private->initiatedDrag = YES;
1806     [[self _webView] _setInitiatedDrag:YES];
1807
1808     // Retain this view during the drag because it may be released before the drag ends.
1809     [self retain];
1810
1811     [super dragImage:dragImage at:at offset:offset event:event pasteboard:pasteboard source:source slideBack:slideBack];
1812 }
1813
1814 - (void)mouseDragged:(NSEvent *)event
1815 {
1816     if (!_private->ignoringMouseDraggedEvents) {
1817         [[self _bridge] mouseDragged:event];
1818     }
1819 }
1820
1821 - (NSDragOperation)draggingSourceOperationMaskForLocal:(BOOL)isLocal
1822 {
1823     if (_private->webCoreDragOp == NSDragOperationNone) {
1824         return (NSDragOperationGeneric | NSDragOperationCopy);
1825     } else {
1826         return _private->webCoreDragOp;
1827     }
1828 }
1829
1830 - (void)draggedImage:(NSImage *)image movedTo:(NSPoint)screenLoc
1831 {
1832     NSPoint windowImageLoc = [[self window] convertScreenToBase:screenLoc];
1833     NSPoint windowMouseLoc = NSMakePoint(windowImageLoc.x + _private->dragOffset.x, windowImageLoc.y + _private->dragOffset.y);
1834     [[self _bridge] dragSourceMovedTo:windowMouseLoc];
1835 }
1836
1837 - (void)draggedImage:(NSImage *)anImage endedAt:(NSPoint)aPoint operation:(NSDragOperation)operation
1838 {
1839     NSPoint windowImageLoc = [[self window] convertScreenToBase:aPoint];
1840     NSPoint windowMouseLoc = NSMakePoint(windowImageLoc.x + _private->dragOffset.x, windowImageLoc.y + _private->dragOffset.y);
1841     [[self _bridge] dragSourceEndedAt:windowMouseLoc operation:operation];
1842
1843     _private->initiatedDrag = NO;
1844     [[self _webView] _setInitiatedDrag:NO];
1845
1846     // Prevent queued mouseDragged events from coming after the drag and fake mouseUp event.
1847     _private->ignoringMouseDraggedEvents = YES;
1848
1849     // Once the dragging machinery kicks in, we no longer get mouse drags or the up event.
1850     // khtml expects to get balanced down/up's, so we must fake up a mouseup.
1851     NSEvent *fakeEvent = [NSEvent mouseEventWithType:NSLeftMouseUp
1852                                             location:windowMouseLoc
1853                                        modifierFlags:[[NSApp currentEvent] modifierFlags]
1854                                            timestamp:[NSDate timeIntervalSinceReferenceDate]
1855                                         windowNumber:[[self window] windowNumber]
1856                                              context:[[NSApp currentEvent] context]
1857                                          eventNumber:0 clickCount:0 pressure:0];
1858     [self mouseUp:fakeEvent]; // This will also update the mouseover state.
1859
1860     // Balance the previous retain from when the drag started.
1861     [self release];
1862 }
1863
1864 - (NSArray *)namesOfPromisedFilesDroppedAtDestination:(NSURL *)dropDestination
1865 {
1866     ASSERT(_private->draggingImageURL);
1867
1868     NSFileWrapper *wrapper = [[self _dataSource] _fileWrapperForURL:_private->draggingImageURL];
1869     ASSERT(wrapper);
1870
1871     // FIXME: Report an error if we fail to create a file.
1872     NSString *path = [[dropDestination path] stringByAppendingPathComponent:[wrapper preferredFilename]];
1873     path = [[NSFileManager defaultManager] _web_pathWithUniqueFilenameForPath:path];
1874     if (![wrapper writeToFile:path atomically:NO updateFilenames:YES]) {
1875         ERROR("Failed to create image file via -[NSFileWrapper writeToFile:atomically:updateFilenames:]");
1876     }
1877
1878     return [NSArray arrayWithObject:[path lastPathComponent]];
1879 }
1880
1881 - (BOOL)_canProcessDragWithDraggingInfo:(id <NSDraggingInfo>)draggingInfo
1882 {
1883     NSPasteboard *pasteboard = [draggingInfo draggingPasteboard];
1884     NSMutableSet *types = [NSMutableSet setWithArray:[pasteboard types]];
1885     [types intersectSet:[NSSet setWithArray:[WebHTMLView _insertablePasteboardTypes]]];
1886     if ([types count] == 0) {
1887         return NO;
1888     } else if ([types count] == 1 &&
1889                [types containsObject:NSFilenamesPboardType] &&
1890                ![self _imageExistsAtPaths:[pasteboard propertyListForType:NSFilenamesPboardType]]) {
1891         return NO;
1892     }
1893
1894     NSPoint point = [self convertPoint:[draggingInfo draggingLocation] fromView:nil];
1895     NSDictionary *element = [self elementAtPoint:point];
1896     if ([[self _webView] isEditable] || [[element objectForKey:WebElementDOMNodeKey] isContentEditable]) {
1897         if (_private->initiatedDrag && [[element objectForKey:WebElementIsSelectedKey] boolValue]) {
1898             // Can't drag onto the selection being dragged.
1899             return NO;
1900         }
1901         return YES;
1902     }
1903
1904     return NO;
1905 }
1906
1907 - (NSDragOperation)draggingUpdatedWithDraggingInfo:(id <NSDraggingInfo>)draggingInfo actionMask:(unsigned int)actionMask
1908 {
1909     NSDragOperation operation = NSDragOperationNone;
1910
1911     if (actionMask & WebDragDestinationActionDHTML) {
1912         operation = [[self _bridge] dragOperationForDraggingInfo:draggingInfo];
1913     }
1914     _private->webCoreHandlingDrag = (operation != NSDragOperationNone);
1915
1916     if ((actionMask & WebDragDestinationActionEdit) &&
1917         !_private->webCoreHandlingDrag
1918         && [self _canProcessDragWithDraggingInfo:draggingInfo])
1919     {
1920         WebView *webView = [self _webView];
1921         [webView moveDragCaretToPoint:[webView convertPoint:[draggingInfo draggingLocation] fromView:nil]];
1922         operation = (_private->initiatedDrag && [[self _bridge] isSelectionEditable]) ? NSDragOperationMove : NSDragOperationCopy;
1923     } else {
1924         [[self _webView] removeDragCaret];
1925     }
1926
1927     return operation;
1928 }
1929
1930 - (void)draggingCancelledWithDraggingInfo:(id <NSDraggingInfo>)draggingInfo
1931 {
1932     [[self _bridge] dragExitedWithDraggingInfo:draggingInfo];
1933     [[self _webView] removeDragCaret];
1934 }
1935
1936 - (BOOL)concludeDragForDraggingInfo:(id <NSDraggingInfo>)draggingInfo actionMask:(unsigned int)actionMask
1937 {
1938     WebView *webView = [self _webView];
1939     WebBridge *bridge = [self _bridge];
1940     if (_private->webCoreHandlingDrag) {
1941         ASSERT(actionMask & WebDragDestinationActionDHTML);
1942         [[webView _UIDelegateForwarder] webView:webView willPerformDragDestinationAction:WebDragDestinationActionDHTML forDraggingInfo:draggingInfo];
1943         [bridge concludeDragForDraggingInfo:draggingInfo];
1944         return YES;
1945     } else if (actionMask & WebDragDestinationActionEdit) {
1946         BOOL didInsert = NO;
1947         if ([self _canProcessDragWithDraggingInfo:draggingInfo]) {
1948             DOMDocumentFragment *fragment = [self _documentFragmentFromPasteboard:[draggingInfo draggingPasteboard] allowPlainText:YES];
1949             if (fragment && [self _shouldInsertFragment:fragment replacingDOMRange:[bridge dragCaretDOMRange] givenAction:WebViewInsertActionDropped]) {
1950                 [[webView _UIDelegateForwarder] webView:webView willPerformDragDestinationAction:WebDragDestinationActionEdit forDraggingInfo:draggingInfo];
1951                 if (_private->initiatedDrag && [bridge isSelectionEditable]) {
1952                     [bridge moveSelectionToDragCaret:fragment];
1953                 } else {
1954                     [bridge setSelectionToDragCaret];
1955                     [bridge replaceSelectionWithFragment:fragment selectReplacement:YES];
1956                 }
1957                 didInsert = YES;
1958             }
1959         }
1960         [webView removeDragCaret];
1961         return didInsert;
1962     }
1963     return NO;
1964 }
1965
1966 - (NSDictionary *)elementAtPoint:(NSPoint)point
1967 {
1968     NSDictionary *elementInfoWC = [[self _bridge] elementAtPoint:point];
1969     NSMutableDictionary *elementInfo = [elementInfoWC mutableCopy];
1970
1971     // Convert URL strings to NSURLs
1972     [elementInfo _web_setObjectIfNotNil:[NSURL _web_URLWithDataAsString:[elementInfoWC objectForKey:WebElementLinkURLKey]] forKey:WebElementLinkURLKey];
1973     [elementInfo _web_setObjectIfNotNil:[NSURL _web_URLWithDataAsString:[elementInfoWC objectForKey:WebElementImageURLKey]] forKey:WebElementImageURLKey];
1974
1975     WebFrameView *webFrameView = [self _web_parentWebFrameView];
1976     ASSERT(webFrameView);
1977     WebFrame *webFrame = [webFrameView webFrame];
1978
1979     if (webFrame) {
1980         NSString *frameName = [elementInfoWC objectForKey:WebElementLinkTargetFrameKey];
1981         if ([frameName length] == 0) {
1982             [elementInfo setObject:webFrame forKey:WebElementLinkTargetFrameKey];
1983         } else {
1984             WebFrame *wf = [webFrame findFrameNamed:frameName];
1985             if (wf != nil)
1986                 [elementInfo setObject:wf forKey:WebElementLinkTargetFrameKey];
1987             else
1988                 [elementInfo removeObjectForKey:WebElementLinkTargetFrameKey];
1989         }
1990
1991         [elementInfo setObject:webFrame forKey:WebElementFrameKey];
1992     }
1993
1994     return [elementInfo autorelease];
1995 }
1996
1997 - (void)mouseUp:(NSEvent *)event
1998 {
1999     [self _stopAutoscrollTimer];
2000     [[self _bridge] mouseUp:event];
2001     [self _updateMouseoverWithFakeEvent];
2002 }
2003
2004 - (void)mouseMovedNotification:(NSNotification *)notification
2005 {
2006     [self _updateMouseoverWithEvent:[[notification userInfo] objectForKey:@"NSEvent"]];
2007 }
2008
2009 - (BOOL)supportsTextEncoding
2010 {
2011     return YES;
2012 }
2013
2014 - (NSView *)nextKeyView
2015 {
2016     if (_private && _private->nextKeyViewAccessShouldMoveFocus && ![[self _bridge] inNextKeyViewOutsideWebFrameViews]) {
2017         _private->nextKeyViewAccessShouldMoveFocus = NO;
2018         return [[self _bridge] nextKeyView];
2019     }
2020
2021     return [super nextKeyView];
2022 }
2023
2024 - (NSView *)previousKeyView
2025 {
2026     if (_private && _private->nextKeyViewAccessShouldMoveFocus) {
2027         _private->nextKeyViewAccessShouldMoveFocus = NO;
2028         return [[self _bridge] previousKeyView];
2029     }
2030
2031     return [super previousKeyView];
2032 }
2033
2034 - (NSView *)nextValidKeyView
2035 {
2036     if (![self isHiddenOrHasHiddenAncestor]) {
2037         _private->nextKeyViewAccessShouldMoveFocus = YES;
2038     }
2039     NSView *view = [super nextValidKeyView];
2040     _private->nextKeyViewAccessShouldMoveFocus = NO;
2041     return view;
2042 }
2043
2044 - (NSView *)previousValidKeyView
2045 {
2046     if (![self isHiddenOrHasHiddenAncestor]) {
2047         _private->nextKeyViewAccessShouldMoveFocus = YES;
2048     }
2049     NSView *view = [super previousValidKeyView];
2050     _private->nextKeyViewAccessShouldMoveFocus = NO;
2051     return view;
2052 }
2053
2054 - (BOOL)becomeFirstResponder
2055 {
2056     NSView *view = nil;
2057     if (![[self _webView] _isPerformingProgrammaticFocus]) {
2058         switch ([[self window] keyViewSelectionDirection]) {
2059         case NSDirectSelection:
2060             break;
2061         case NSSelectingNext:
2062             view = [[self _bridge] nextKeyViewInsideWebFrameViews];
2063             break;
2064         case NSSelectingPrevious:
2065             view = [[self _bridge] previousKeyViewInsideWebFrameViews];
2066             break;
2067         }
2068     }
2069     if (view) {
2070         [[self window] makeFirstResponder:view];
2071     }
2072     [self setCaretVisible:YES];
2073     [self updateTextBackgroundColor];
2074     return YES;
2075 }
2076
2077 // This approach could be relaxed when dealing with 3228554.
2078 // Some alteration to the selection behavior was done to deal with 3672088.
2079 - (BOOL)resignFirstResponder
2080 {
2081     BOOL resign = [super resignFirstResponder];
2082     if (resign) {
2083         _private->resigningFirstResponder = YES;
2084         if (![self maintainsInactiveSelection]) {
2085             if ([[self _webView] _isPerformingProgrammaticFocus]) {
2086                 [self deselectText];
2087             }
2088             else {
2089                 [self deselectAll];
2090             }
2091         }
2092         [self setCaretVisible:NO];
2093         [self updateTextBackgroundColor];
2094         _private->resigningFirstResponder = NO;
2095     }
2096     return resign;
2097 }
2098
2099 //------------------------------------------------------------------------------------
2100 // WebDocumentView protocol
2101 //------------------------------------------------------------------------------------
2102 - (void)setDataSource:(WebDataSource *)dataSource
2103 {
2104 }
2105
2106 - (void)dataSourceUpdated:(WebDataSource *)dataSource
2107 {
2108 }
2109
2110 // Does setNeedsDisplay:NO as a side effect when printing is ending.
2111 // pageWidth != 0 implies we will relayout to a new width
2112 - (void)_setPrinting:(BOOL)printing minimumPageWidth:(float)minPageWidth maximumPageWidth:(float)maxPageWidth adjustViewSize:(BOOL)adjustViewSize
2113 {
2114     WebFrame *frame = [self _frame];
2115     NSArray *subframes = [frame childFrames];
2116     unsigned n = [subframes count];
2117     unsigned i;
2118     for (i = 0; i != n; ++i) {
2119         WebFrame *subframe = [subframes objectAtIndex:i];
2120         WebFrameView *frameView = [subframe frameView];
2121         if ([[subframe dataSource] _isDocumentHTML]) {
2122             [(WebHTMLView *)[frameView documentView] _setPrinting:printing minimumPageWidth:0.0 maximumPageWidth:0.0 adjustViewSize:adjustViewSize];
2123         }
2124     }
2125
2126     if (printing != _private->printing) {
2127         [_private->pageRects release];
2128         _private->pageRects = nil;
2129         _private->printing = printing;
2130         [self setNeedsToApplyStyles:YES];
2131         [self setNeedsLayout:YES];
2132         [self layoutToMinimumPageWidth:minPageWidth maximumPageWidth:maxPageWidth adjustingViewSize:adjustViewSize];
2133         if (printing) {
2134             [[self _webView] _adjustPrintingMarginsForHeaderAndFooter];
2135         } else {
2136             // Can't do this when starting printing or nested printing won't work, see 3491427.
2137             [self setNeedsDisplay:NO];
2138         }
2139     }
2140 }
2141
2142 // This is needed for the case where the webview is embedded in the view that's being printed.
2143 // It shouldn't be called when the webview is being printed directly.
2144 - (void)adjustPageHeightNew:(float *)newBottom top:(float)oldTop bottom:(float)oldBottom limit:(float)bottomLimit
2145 {
2146     // This helps when we print as part of a larger print process.
2147     // If the WebHTMLView itself is what we're printing, then we will never have to do this.
2148     BOOL wasInPrintingMode = _private->printing;
2149     if (!wasInPrintingMode) {
2150         [self _setPrinting:YES minimumPageWidth:0.0 maximumPageWidth:0.0 adjustViewSize:NO];
2151     }
2152
2153     [[self _bridge] adjustPageHeightNew:newBottom top:oldTop bottom:oldBottom limit:bottomLimit];
2154
2155     if (!wasInPrintingMode) {
2156         [self _setPrinting:NO minimumPageWidth:0.0 maximumPageWidth:0.0 adjustViewSize:NO];
2157     }
2158 }
2159
2160 - (float)_availablePaperWidthForPrintOperation:(NSPrintOperation *)printOperation
2161 {
2162     NSPrintInfo *printInfo = [printOperation printInfo];
2163     return [printInfo paperSize].width - [printInfo leftMargin] - [printInfo rightMargin];
2164 }
2165
2166 - (float)_scaleFactorForPrintOperation:(NSPrintOperation *)printOperation
2167 {
2168     float viewWidth = NSWidth([self bounds]);
2169     if (viewWidth < 1) {
2170         ERROR("%@ has no width when printing", self);
2171         return 1.0;
2172     }
2173
2174     float userScaleFactor = [printOperation _web_pageSetupScaleFactor];
2175     float maxShrinkToFitScaleFactor = 1/PrintingMaximumShrinkFactor;
2176     float shrinkToFitScaleFactor = [self _availablePaperWidthForPrintOperation:printOperation]/viewWidth;
2177     return userScaleFactor * MAX(maxShrinkToFitScaleFactor, shrinkToFitScaleFactor);
2178 }
2179
2180 // FIXME 3491344: This is a secret AppKit-internal method that we need to override in order
2181 // to get our shrink-to-fit to work with a custom pagination scheme. We can do this better
2182 // if AppKit makes it SPI/API.
2183 - (float)_provideTotalScaleFactorForPrintOperation:(NSPrintOperation *)printOperation
2184 {
2185     return [self _scaleFactorForPrintOperation:printOperation];
2186 }
2187
2188 - (void)setPageWidthForPrinting:(float)pageWidth
2189 {
2190     [self _setPrinting:NO minimumPageWidth:0. maximumPageWidth:0. adjustViewSize:NO];
2191     [self _setPrinting:YES minimumPageWidth:pageWidth maximumPageWidth:pageWidth adjustViewSize:YES];
2192 }
2193
2194
2195 // Return the number of pages available for printing
2196 - (BOOL)knowsPageRange:(NSRangePointer)range {
2197     // Must do this explicit display here, because otherwise the view might redisplay while the print
2198     // sheet was up, using printer fonts (and looking different).
2199     [self displayIfNeeded];
2200     [[self window] setAutodisplay:NO];
2201
2202     // If we are a frameset just print with the layout we have onscreen, otherwise relayout
2203     // according to the paper size
2204     float minLayoutWidth = 0.0;
2205     float maxLayoutWidth = 0.0;
2206     if (![[self _bridge] isFrameSet]) {
2207         float paperWidth = [self _availablePaperWidthForPrintOperation:[NSPrintOperation currentOperation]];
2208         minLayoutWidth = paperWidth*PrintingMinimumShrinkFactor;
2209         maxLayoutWidth = paperWidth*PrintingMaximumShrinkFactor;
2210     }
2211     [self _setPrinting:YES minimumPageWidth:minLayoutWidth maximumPageWidth:maxLayoutWidth adjustViewSize:YES]; // will relayout
2212
2213     // There is a theoretical chance that someone could do some drawing between here and endDocument,
2214     // if something caused setNeedsDisplay after this point. If so, it's not a big tragedy, because
2215     // you'd simply see the printer fonts on screen. As of this writing, this does not happen with Safari.
2216
2217     range->location = 1;
2218     NSPrintOperation *printOperation = [NSPrintOperation currentOperation];
2219     float totalScaleFactor = [self _scaleFactorForPrintOperation:printOperation];
2220     float userScaleFactor = [printOperation _web_pageSetupScaleFactor];
2221     [_private->pageRects release];
2222     NSArray *newPageRects = [[self _bridge] computePageRectsWithPrintWidthScaleFactor:userScaleFactor
2223                                                                           printHeight:[self _calculatePrintHeight]/totalScaleFactor];
2224     // AppKit gets all messed up if you give it a zero-length page count (see 3576334), so if we
2225     // hit that case we'll pass along a degenerate 1 pixel square to print. This will print
2226     // a blank page (with correct-looking header and footer if that option is on), which matches
2227     // the behavior of IE and Camino at least.
2228     if ([newPageRects count] == 0) {
2229         newPageRects = [NSArray arrayWithObject:[NSValue valueWithRect: NSMakeRect(0, 0, 1, 1)]];
2230     }
2231     _private->pageRects = [newPageRects retain];
2232
2233     range->length = [_private->pageRects count];
2234
2235     return YES;
2236 }
2237
2238 // Return the drawing rectangle for a particular page number
2239 - (NSRect)rectForPage:(int)page {
2240     return [[_private->pageRects objectAtIndex: (page-1)] rectValue];
2241 }
2242
2243 // Calculate the vertical size of the view that fits on a single page
2244 - (float)_calculatePrintHeight {
2245     // Obtain the print info object for the current operation
2246     NSPrintInfo *pi = [[NSPrintOperation currentOperation] printInfo];
2247
2248     // Calculate the page height in points
2249     NSSize paperSize = [pi paperSize];
2250     return paperSize.height - [pi topMargin] - [pi bottomMargin];
2251 }
2252
2253 - (void)drawPageBorderWithSize:(NSSize)borderSize
2254 {
2255     ASSERT(NSEqualSizes(borderSize, [[[NSPrintOperation currentOperation] printInfo] paperSize]));
2256     [[self _webView] _drawHeaderAndFooter];
2257 }
2258
2259 - (void)endDocument
2260 {
2261     [super endDocument];
2262     // Note sadly at this point [NSGraphicsContext currentContextDrawingToScreen] is still NO
2263     [self _setPrinting:NO minimumPageWidth:0.0 maximumPageWidth:0.0 adjustViewSize:YES];
2264     [[self window] setAutodisplay:YES];
2265 }
2266
2267 - (void)_updateTextSizeMultiplier
2268 {
2269     [[self _bridge] setTextSizeMultiplier:[[self _webView] textSizeMultiplier]];
2270 }
2271
2272 - (BOOL)performKeyEquivalent:(NSEvent *)event
2273 {
2274     // Pass command-key combos through WebCore if there is a key binding available for
2275     // this event. This lets web pages have a crack at intercepting command-modified keypresses.
2276     if ([self firstResponderIsSelfOrDescendantView] && [event _web_keyBindingManagerHasBinding]) {
2277         [[self _bridge] interceptKeyEvent:event toView:self];
2278         return YES;
2279     }
2280     return [super performKeyEquivalent:event];
2281 }
2282
2283 - (void)keyDown:(NSEvent *)event
2284 {
2285     BOOL intercepted = [[self _bridge] interceptKeyEvent:event toView:self];
2286     if (!intercepted || [event _web_isTabKeyEvent]) {
2287         [super keyDown:event];
2288     }
2289 }
2290
2291 - (void)keyUp:(NSEvent *)event
2292 {
2293     if (![[self _bridge] interceptKeyEvent:event toView:self]) {
2294         [super keyUp:event];
2295     }
2296 }
2297
2298 - (id)accessibilityAttributeValue:(NSString*)attributeName
2299 {
2300     if ([attributeName isEqualToString: NSAccessibilityChildrenAttribute]) {
2301         id accTree = [[self _bridge] accessibilityTree];
2302         if (accTree)
2303             return [NSArray arrayWithObject: accTree];
2304         return nil;
2305     }
2306     return [super accessibilityAttributeValue:attributeName];
2307 }
2308
2309 - (id)accessibilityHitTest:(NSPoint)point
2310 {
2311     id accTree = [[self _bridge] accessibilityTree];
2312     if (accTree) {
2313         NSPoint windowCoord = [[self window] convertScreenToBase: point];
2314         return [accTree accessibilityHitTest: [self convertPoint:windowCoord fromView:nil]];
2315     }
2316     else
2317         return self;
2318 }
2319
2320 - (void)centerSelectionInVisibleArea:(id)sender
2321 {
2322     // FIXME: Does this do the right thing when the selection is not a caret?
2323     [[self _bridge] ensureCaretVisible];
2324 }
2325
2326 - (void)_alterCurrentSelection:(WebSelectionAlteration)alteration direction:(WebSelectionDirection)direction granularity:(WebSelectionGranularity)granularity
2327 {
2328     WebBridge *bridge = [self _bridge];
2329     DOMRange *proposedRange = [bridge rangeByAlteringCurrentSelection:alteration direction:direction granularity:granularity];
2330     WebView *webView = [self _webView];
2331     if ([[webView _editingDelegateForwarder] webView:webView shouldChangeSelectedDOMRange:[bridge selectedDOMRange] toDOMRange:proposedRange affinity:[bridge selectionAffinity] stillSelecting:NO]) {
2332         [bridge alterCurrentSelection:alteration direction:direction granularity:granularity];
2333     }
2334 }
2335
2336 - (void)moveBackward:(id)sender
2337 {
2338     [self _alterCurrentSelection:WebSelectByMoving direction:WebSelectBackward granularity:WebSelectByCharacter];
2339 }
2340
2341 - (void)moveBackwardAndModifySelection:(id)sender
2342 {
2343     [self _alterCurrentSelection:WebSelectByExtending direction:WebSelectBackward granularity:WebSelectByCharacter];
2344 }
2345
2346 - (void)moveDown:(id)sender
2347 {
2348     [self _alterCurrentSelection:WebSelectByMoving direction:WebSelectForward granularity:WebSelectByLine];
2349 }
2350
2351 - (void)moveDownAndModifySelection:(id)sender
2352 {
2353     [self _alterCurrentSelection:WebSelectByExtending direction:WebSelectForward granularity:WebSelectByLine];
2354 }
2355
2356 - (void)moveForward:(id)sender
2357 {
2358     [self _alterCurrentSelection:WebSelectByMoving direction:WebSelectForward granularity:WebSelectByCharacter];
2359 }
2360
2361 - (void)moveForwardAndModifySelection:(id)sender
2362 {
2363     [self _alterCurrentSelection:WebSelectByExtending direction:WebSelectForward granularity:WebSelectByCharacter];
2364 }
2365
2366 - (void)moveLeft:(id)sender
2367 {
2368     [self _alterCurrentSelection:WebSelectByMoving direction:WebSelectLeft granularity:WebSelectByCharacter];
2369 }
2370
2371 - (void)moveLeftAndModifySelection:(id)sender
2372 {
2373     [self _alterCurrentSelection:WebSelectByExtending direction:WebSelectLeft granularity:WebSelectByCharacter];
2374 }
2375
2376 - (void)moveRight:(id)sender
2377 {
2378     [self _alterCurrentSelection:WebSelectByMoving direction:WebSelectRight granularity:WebSelectByCharacter];
2379 }
2380
2381 - (void)moveRightAndModifySelection:(id)sender
2382 {
2383     [self _alterCurrentSelection:WebSelectByExtending direction:WebSelectRight granularity:WebSelectByCharacter];
2384 }
2385
2386 - (void)moveToBeginningOfDocument:(id)sender
2387 {
2388     ERROR("unimplemented");
2389 }
2390
2391 - (void)moveToBeginningOfLine:(id)sender
2392 {
2393     ERROR("unimplemented");
2394 }
2395
2396 - (void)moveToBeginningOfParagraph:(id)sender
2397 {
2398     ERROR("unimplemented");
2399 }
2400
2401 - (void)moveToEndOfDocument:(id)sender
2402 {
2403     ERROR("unimplemented");
2404 }
2405
2406 - (void)moveToEndOfLine:(id)sender
2407 {
2408     ERROR("unimplemented");
2409 }
2410
2411 - (void)moveToEndOfParagraph:(id)sender
2412 {
2413     ERROR("unimplemented");
2414 }
2415
2416 - (void)moveUp:(id)sender
2417 {
2418     [self _alterCurrentSelection:WebSelectByMoving direction:WebSelectBackward granularity:WebSelectByLine];
2419 }
2420
2421 - (void)moveUpAndModifySelection:(id)sender
2422 {
2423     [self _alterCurrentSelection:WebSelectByExtending direction:WebSelectBackward granularity:WebSelectByLine];
2424 }
2425
2426 - (void)moveWordBackward:(id)sender
2427 {
2428     [self _alterCurrentSelection:WebSelectByMoving direction:WebSelectBackward granularity:WebSelectByWord];
2429 }
2430
2431 - (void)moveWordBackwardAndModifySelection:(id)sender
2432 {
2433     [self _alterCurrentSelection:WebSelectByExtending direction:WebSelectBackward granularity:WebSelectByWord];
2434 }
2435
2436 - (void)moveWordForward:(id)sender
2437 {
2438     [self _alterCurrentSelection:WebSelectByMoving direction:WebSelectForward granularity:WebSelectByWord];
2439 }
2440
2441 - (void)moveWordForwardAndModifySelection:(id)sender
2442 {
2443     [self _alterCurrentSelection:WebSelectByExtending direction:WebSelectForward granularity:WebSelectByWord];
2444 }
2445
2446 - (void)moveWordLeft:(id)sender
2447 {
2448     [self _alterCurrentSelection:WebSelectByMoving direction:WebSelectLeft granularity:WebSelectByWord];
2449 }
2450
2451 - (void)moveWordLeftAndModifySelection:(id)sender
2452 {
2453     [self _alterCurrentSelection:WebSelectByExtending direction:WebSelectLeft granularity:WebSelectByWord];
2454 }
2455
2456 - (void)moveWordRight:(id)sender
2457 {
2458     [self _alterCurrentSelection:WebSelectByMoving direction:WebSelectRight granularity:WebSelectByWord];
2459 }
2460
2461 - (void)moveWordRightAndModifySelection:(id)sender
2462 {
2463     [self _alterCurrentSelection:WebSelectByExtending direction:WebSelectRight granularity:WebSelectByWord];
2464 }
2465
2466 - (void)pageDown:(id)sender
2467 {
2468     ERROR("unimplemented");
2469 }
2470
2471 - (void)pageUp:(id)sender
2472 {
2473     ERROR("unimplemented");
2474 }
2475
2476 - (void)_expandSelectionToGranularity:(WebSelectionGranularity)granularity
2477 {
2478     WebBridge *bridge = [self _bridge];
2479     DOMRange *range = [bridge selectedDOMRangeWithGranularity:granularity];
2480     if (range && ![range collapsed]) {
2481         WebView *webView = [self _webView];
2482         if ([[webView _editingDelegateForwarder] webView:webView shouldChangeSelectedDOMRange:[bridge selectedDOMRange] toDOMRange:range affinity:[bridge selectionAffinity] stillSelecting:NO]) {
2483             [bridge setSelectedDOMRange:range affinity:[bridge selectionAffinity]];
2484         }
2485     }
2486 }
2487
2488 - (void)selectParagraph:(id)sender
2489 {
2490     [self _expandSelectionToGranularity:WebSelectByParagraph];
2491 }
2492
2493 - (void)selectLine:(id)sender
2494 {
2495     [self _expandSelectionToGranularity:WebSelectByLine];
2496 }
2497
2498 - (void)selectWord:(id)sender
2499 {
2500     [self _expandSelectionToGranularity:WebSelectByWord];
2501 }
2502
2503 - (void)copy:(id)sender
2504 {
2505     if ([[self _bridge] tryDHTMLCopy]) {
2506         return;     // DHTML did the whole operation
2507     }
2508
2509     if (![self _haveSelection]) {
2510         NSBeep();
2511         return;
2512     }
2513     [self _writeSelectionToPasteboard:[NSPasteboard generalPasteboard]];
2514 }
2515
2516 - (void)cut:(id)sender
2517 {
2518     if ([[self _bridge] tryDHTMLCut]) {
2519         return;     // DHTML did the whole operation
2520     }
2521
2522     if (![self _haveSelection]) {
2523         NSBeep();
2524         return;
2525     }
2526     [self copy:sender];
2527     [[self _bridge] deleteSelection];
2528 }
2529
2530 - (void)delete:(id)sender
2531 {
2532     if (![self _haveSelection]) {
2533         NSBeep();
2534         return;
2535     }
2536     [[self _bridge] deleteSelection];
2537 }
2538
2539 - (void)paste:(id)sender
2540 {
2541     if ([[self _bridge] tryDHTMLPaste]) {
2542         return;     // DHTML did the whole operation
2543     }
2544
2545     [self _pasteWithPasteboard:[NSPasteboard generalPasteboard] allowPlainText:YES];
2546 }
2547
2548 - (void)copyFont:(id)sender
2549 {
2550     ERROR("unimplemented");
2551 }
2552
2553 - (void)pasteFont:(id)sender
2554 {
2555     ERROR("unimplemented");
2556 }
2557
2558 - (void)pasteAsPlainText:(id)sender
2559 {
2560     NSString *text = [[NSPasteboard generalPasteboard] stringForType:NSStringPboardType];
2561     WebView *webView = [self _webView];
2562     WebBridge *bridge = [self _bridge];
2563     if ([[webView _editingDelegateForwarder] webView:webView shouldInsertText:text replacingDOMRange:[bridge selectedDOMRange] givenAction:WebViewInsertActionPasted]) {
2564         [bridge replaceSelectionWithText:text selectReplacement:NO];
2565     }
2566 }
2567
2568 - (void)pasteAsRichText:(id)sender
2569 {
2570     [self _pasteWithPasteboard:[NSPasteboard generalPasteboard] allowPlainText:NO];
2571 }
2572
2573 - (DOMCSSStyleDeclaration *)_fontManagerOperationAsStyle
2574 {
2575     WebBridge *bridge = [self _bridge];
2576     DOMCSSStyleDeclaration *style = [[bridge DOMDocument] createCSSStyleDeclaration];
2577
2578     NSFontManager *fm = [NSFontManager sharedFontManager];
2579
2580     NSFont *a = [fm convertFont:[fm fontWithFamily:@"Helvetica" traits:0 weight:5 size:10]];
2581     NSFont *b = [fm convertFont:[fm fontWithFamily:@"Times" traits:(NSBoldFontMask | NSItalicFontMask) weight:10 size:12]];
2582
2583     NSString *fa = [a familyName];
2584     NSString *fb = [b familyName];
2585     if ([fa isEqualToString:fb]) {
2586         [style setFontFamily:fa];
2587     }
2588
2589     int sa = [a pointSize];
2590     int sb = [b pointSize];
2591     if (sa == sb) {
2592         [style setFontSize:[NSString stringWithFormat:@"%dpx", sa]];
2593     }
2594
2595     int wa = [fm weightOfFont:a];
2596     int wb = [fm weightOfFont:b];
2597     if (wa == wb) {
2598         if (wa >= 9) {
2599             [style setFontWeight:@"bold"];
2600         } else {
2601             [style setFontWeight:@"normal"];
2602         }
2603     }
2604
2605     BOOL ia = ([fm traitsOfFont:a] & NSItalicFontMask) != 0;
2606     BOOL ib = ([fm traitsOfFont:b] & NSItalicFontMask) != 0;
2607     if (ia == ib) {
2608         if (ia) {
2609             [style setFontStyle:@"italic"];
2610         } else {
2611             [style setFontStyle:@"normal"];
2612         }
2613     }
2614
2615     return style;
2616 }
2617
2618 - (void)changeFont:(id)sender
2619 {
2620     DOMCSSStyleDeclaration *style = [self _fontManagerOperationAsStyle];
2621     WebView *webView = [self _webView];
2622     WebBridge *bridge = [self _bridge];
2623     if ([[webView _editingDelegateForwarder] webView:webView shouldApplyStyle:style toElementsInDOMRange:[bridge selectedDOMRange]]) {
2624         [bridge applyStyle:style];
2625     }
2626 }
2627
2628 - (void)changeAttributes:(id)sender
2629 {
2630     ERROR("unimplemented");
2631 }
2632
2633 - (DOMCSSStyleDeclaration *)_colorPanelColorAsStyleUsingSelector:(SEL)selector
2634 {
2635     WebBridge *bridge = [self _bridge];
2636     DOMCSSStyleDeclaration *style = [[bridge DOMDocument] createCSSStyleDeclaration];
2637     NSColor *color = [[NSColorPanel sharedColorPanel] color];
2638     NSString *colorAsString = [NSString stringWithFormat:@"rgb(%.0f,%.0f,%.0f)", [color redComponent]*255, [color greenComponent]*255, [color blueComponent]*255];
2639     ASSERT([style respondsToSelector:selector]);
2640     [style performSelector:selector withObject:colorAsString];
2641
2642     return style;
2643 }
2644
2645 - (void)_changeCSSColorUsingSelector:(SEL)selector inRange:(DOMRange *)range
2646 {
2647     DOMCSSStyleDeclaration *style = [self _colorPanelColorAsStyleUsingSelector:selector];
2648     WebView *webView = [self _webView];
2649     if ([[webView _editingDelegateForwarder] webView:webView shouldApplyStyle:style toElementsInDOMRange:range]) {
2650         [[self _bridge] applyStyle:style];
2651     }
2652 }
2653
2654 - (DOMRange *)_entireDOMRange
2655 {
2656     DOMDocument *document = [[self _bridge] DOMDocument];
2657     DOMRange *range = [document createRange];
2658     [range selectNode:[document documentElement]];
2659     return range;
2660 }
2661
2662 - (void)changeDocumentBackgroundColor:(id)sender
2663 {
2664     // Mimicking NSTextView, this method sets the background color for the
2665     // entire document. There is no NSTextView API for setting the background
2666     // color on the selected range only. Note that this method is currently
2667     // never called from the UI (see comment in changeColor:).
2668     // FIXME: this actually has no effect when called, probably due to 3654850. _entireDOMRange seems
2669     // to do the right thing because it works in startSpeaking:, and I know setBackgroundColor: does the
2670     // right thing because I tested it with [[self _bridge] selectedDOMRange].
2671     // FIXME: This won't actually apply the style to the entire range here, because it ends up calling
2672     // [bridge applyStyle:], which operates on the current selection. To make this work right, we'll
2673     // need to save off the selection, temporarily set it to the entire range, make the change, then
2674     // restore the old selection.
2675     [self _changeCSSColorUsingSelector:@selector(setBackgroundColor:) inRange:[self _entireDOMRange]];
2676 }
2677
2678 - (void)changeColor:(id)sender
2679 {
2680     // FIXME: in NSTextView, this method calls changeDocumentBackgroundColor: when a
2681     // private call has earlier been made by [NSFontFontEffectsBox changeColor:], see 3674493.
2682     // AppKit will have to be revised to allow this to work with anything that isn't an
2683     // NSTextView. However, this might not be required for Tiger, since the background-color
2684     // changing box in the font panel doesn't work in Mail (3674481), though it does in TextEdit.
2685     [self _changeCSSColorUsingSelector:@selector(setColor:) inRange:[[self _bridge] selectedDOMRange]];
2686 }
2687
2688 - (void)_alignSelectionUsingCSSValue:(NSString *)CSSAlignmentValue
2689 {
2690     // FIXME 3675191: This doesn't work yet. Maybe it's blocked by 3654850, or maybe something other than
2691     // just applyStyle: needs to be called for block-level attributes like this.
2692     WebBridge *bridge = [self _bridge];
2693     DOMCSSStyleDeclaration *style = [[bridge DOMDocument] createCSSStyleDeclaration];
2694     [style setTextAlign:CSSAlignmentValue];
2695     WebView *webView = [self _webView];
2696     if ([[webView _editingDelegateForwarder] webView:webView shouldApplyStyle:style toElementsInDOMRange:[bridge selectedDOMRange]]) {
2697         [[self _bridge] applyStyle:style];
2698     }
2699 }
2700
2701 - (void)alignCenter:(id)sender
2702 {
2703     [self _alignSelectionUsingCSSValue:@"center"];
2704 }
2705
2706 - (void)alignJustified:(id)sender
2707 {
2708     [self _alignSelectionUsingCSSValue:@"justify"];
2709 }
2710
2711 - (void)alignLeft:(id)sender
2712 {
2713     [self _alignSelectionUsingCSSValue:@"left"];
2714 }
2715
2716 - (void)alignRight:(id)sender
2717 {
2718     [self _alignSelectionUsingCSSValue:@"right"];
2719 }
2720
2721 - (void)indent:(id)sender
2722 {
2723     ERROR("unimplemented");
2724 }
2725
2726 - (void)insertTab:(id)sender
2727 {
2728     WebView *webView = [self _webView];
2729     WebBridge *bridge = [self _bridge];
2730     if ([[webView _editingDelegateForwarder] webView:webView shouldInsertText:@"\t" replacingDOMRange:[bridge selectedDOMRange] givenAction:WebViewInsertActionPasted]) {
2731         [bridge insertText:@"\t"];
2732     }
2733 }
2734
2735 - (void)insertBacktab:(id)sender
2736 {
2737     // Doing nothing matches normal NSTextView behavior. If we ever use WebView for a field-editor-type purpose
2738     // we might add code here.
2739 }
2740
2741 - (void)insertNewline:(id)sender
2742 {
2743     // Perhaps we should make this delegate call sensitive to the real DOM operation we actually do.
2744     WebView *webView = [self _webView];
2745     WebBridge *bridge = [self _bridge];
2746     if ([[webView _editingDelegateForwarder] webView:webView shouldInsertText:@"\n" replacingDOMRange:[bridge selectedDOMRange] givenAction:WebViewInsertActionTyped]) {
2747         [bridge insertNewline];
2748     }
2749 }
2750
2751 - (void)insertParagraphSeparator:(id)sender
2752 {
2753     // FIXME: Should this do something different?
2754     [self insertNewline:sender];
2755 }
2756
2757 - (void)changeCaseOfLetter:(id)sender
2758 {
2759     ERROR("unimplemented");
2760 }
2761
2762 - (void)_changeWordCaseWithSelector:(SEL)selector
2763 {
2764     WebView *webView = [self _webView];
2765     WebBridge *bridge = [self _bridge];
2766     [self selectWord:nil];
2767     NSString *word = [[bridge selectedString] performSelector:selector];
2768     // FIXME: Does this need a different action context other than "typed"?
2769     if ([[webView _editingDelegateForwarder] webView:webView shouldInsertText:word replacingDOMRange:[bridge selectedDOMRange] givenAction:WebViewInsertActionTyped]) {
2770         [bridge replaceSelectionWithText:word selectReplacement:NO];
2771     }
2772 }
2773
2774 - (void)uppercaseWord:(id)sender
2775 {
2776     [self _changeWordCaseWithSelector:@selector(uppercaseString)];
2777 }
2778
2779 - (void)lowercaseWord:(id)sender
2780 {
2781     [self _changeWordCaseWithSelector:@selector(lowercaseString)];
2782 }
2783
2784 - (void)capitalizeWord:(id)sender
2785 {
2786     [self _changeWordCaseWithSelector:@selector(capitalizedString)];
2787 }
2788
2789 - (void)deleteForward:(id)sender
2790 {
2791     ERROR("unimplemented");
2792 }
2793
2794 - (void)deleteBackward:(id)sender
2795 {
2796     WebBridge *bridge = [self _bridge];
2797     if ([bridge isSelectionEditable]) {
2798         WebView *webView = [self _webView];
2799         if ([[webView _editingDelegateForwarder] webView:webView shouldDeleteDOMRange:[bridge selectedDOMRange]]) {
2800             [bridge deleteKeyPressed];
2801         }
2802     }
2803 }
2804
2805 - (void)deleteBackwardByDecomposingPreviousCharacter:(id)sender
2806 {
2807     ERROR("unimplemented");
2808 }
2809
2810 - (void)deleteWordForward:(id)sender
2811 {
2812     [self moveWordForwardAndModifySelection:sender];
2813     [self delete:sender];
2814 }
2815
2816 - (void)deleteWordBackward:(id)sender
2817 {
2818     [self moveWordBackwardAndModifySelection:sender];
2819     [self delete:sender];
2820 }
2821
2822 - (void)deleteToBeginningOfLine:(id)sender
2823 {
2824     [self moveToBeginningOfLine:sender];
2825     [self delete:sender];
2826 }
2827
2828 - (void)deleteToEndOfLine:(id)sender
2829 {
2830     [self moveToEndOfLine:sender];
2831     [self delete:sender];
2832 }
2833
2834 - (void)deleteToBeginningOfParagraph:(id)sender
2835 {
2836     [self moveToBeginningOfParagraph:sender];
2837     [self delete:sender];
2838 }
2839
2840 - (void)deleteToEndOfParagraph:(id)sender
2841 {
2842     [self moveToEndOfParagraph:sender];
2843     [self delete:sender];
2844 }
2845
2846 - (void)complete:(id)sender
2847 {
2848     ERROR("unimplemented");
2849 }
2850
2851 - (void)checkSpelling:(id)sender
2852 {
2853 #if 0
2854     NSTextStorage *text = _getTextStorage(self);
2855     NSTextViewSharedData *sharedData = _getSharedData(self);
2856     if (text && ([text length] > 0) && [self isSelectable]) {
2857         NSSpellChecker *checker = [NSSpellChecker sharedSpellChecker];
2858         NSRange selCharRange = [self selectedRange];
2859         NSRange misspellCharRange = {0, 0}, grammarCharRange = {0, 0};
2860         unsigned i, count;
2861         NSArray *grammarRanges = nil, *grammarDescriptions = nil;
2862
2863         if (!checker || [checker windowIsSpellingPanel:[self window]]) return;
2864
2865         misspellCharRange = [checker checkSpellingOfString:[text string] startingAt:NSMaxRange(selCharRange) language:nil wrap:YES inSpellDocumentWithTag:[self spellCheckerDocumentTag] wordCount:NULL];
2866 #if GRAMMAR_CHECKING
2867         grammarCharRange = [checker checkGrammarOfString:[text string] startingAt:NSMaxRange(selCharRange) language:nil wrap:YES inSpellDocumentWithTag:[self spellCheckerDocumentTag] ranges:&grammarRanges descriptions:&grammarDescriptions reconnectOnError:YES];
2868 #endif
2869
2870         if (misspellCharRange.length > 0 && (grammarCharRange.length == 0 || misspellCharRange.location <= grammarCharRange.location)) {
2871             // select the text and drive the panel
2872             [self setSelectedRange:misspellCharRange affinity:NSSelectionAffinityUpstream stillSelecting:NO];
2873             if ([self isEditable]) {
2874                 [self _addSpellingAttributeForRange:misspellCharRange];
2875                 sharedData->_excludedSpellingCharRange = misspellCharRange;
2876             }
2877             [self scrollRangeToVisible:misspellCharRange];
2878             [checker updateSpellingPanelWithMisspelledWord:[[text string] substringWithRange:misspellCharRange]];
2879         } else if (grammarCharRange.length > 0) {
2880             [self setSelectedRange:grammarCharRange affinity:NSSelectionAffinityUpstream stillSelecting:NO];
2881             count = [grammarRanges count];
2882             if ([self isEditable]) {
2883                 for (i = 0; i < count; i++) {
2884                     NSRange range = [grammarRanges rangeAtIndex:i];
2885                     range.location += grammarCharRange.location;
2886                     [self _addSpellingAttributeForRange:range];
2887                     [_getLayoutManager(self) addTemporaryAttributes:[NSDictionary dictionaryWithObjectsAndKeys:[grammarDescriptions objectAtIndex:i], NSToolTipAttributeName, nil] forCharacterRange:range];
2888                 }
2889             }
2890             [self scrollRangeToVisible:grammarCharRange];
2891         } else {
2892             // Cause the beep to indicate there are no more misspellings.
2893             [checker updateSpellingPanelWithMisspelledWord:@""];
2894         }
2895     }
2896 #endif
2897 }
2898
2899 - (void)showGuessPanel:(id)sender
2900 {
2901 #if 0
2902     NSTextStorage *text = _getTextStorage(self);
2903     NSTextViewSharedData *sharedData = _getSharedData(self);
2904     NSSpellChecker *checker = [NSSpellChecker sharedSpellChecker];
2905     if (text && ([text length] > 0) && [self isSelectable]) {
2906         NSRange selCharRange = [self selectedRange];
2907         NSRange misspellCharRange = {0, 0};
2908         if (checker && ![checker windowIsSpellingPanel:[self window]]) {
2909             misspellCharRange = [checker checkSpellingOfString:[text string] startingAt:((selCharRange.location > 0) ? (selCharRange.location - 1) : 0) language:nil wrap:YES inSpellDocumentWithTag:[self spellCheckerDocumentTag] wordCount:NULL];
2910             if (misspellCharRange.length) {
2911                 // select the text and drive the panel
2912                 [self setSelectedRange:misspellCharRange affinity:NSSelectionAffinityUpstream stillSelecting:NO];
2913                 if ([self isEditable]) {
2914                     [self _addSpellingAttributeForRange:misspellCharRange];
2915                     sharedData->_excludedSpellingCharRange = misspellCharRange;
2916                 }
2917                 [self scrollRangeToVisible:misspellCharRange];
2918                 [checker updateSpellingPanelWithMisspelledWord:[[text string] substringWithRange:misspellCharRange]];
2919             }
2920         }
2921     }
2922     if (checker) {
2923         [[checker spellingPanel] orderFront:sender];
2924     }
2925 #endif
2926 }
2927
2928 #if 0
2929
2930 - (void)_changeSpellingToWord:(NSString *)newWord {
2931     NSRange charRange = [self rangeForUserTextChange];
2932     if ([self isEditable] && charRange.location != NSNotFound) {
2933         NSSpellChecker *checker = [NSSpellChecker sharedSpellChecker];
2934         if (!checker || [checker windowIsSpellingPanel:[self window]]) return;
2935
2936         // Don't correct to empty string.
2937         if ([newWord isEqualToString:@""]) return;
2938
2939         if ([self shouldChangeTextInRange:charRange replacementString:newWord]) {
2940             [self replaceCharactersInRange:charRange withString:newWord];
2941             charRange.length = [newWord length];
2942             [self setSelectedRange:charRange affinity:NSSelectionAffinityUpstream stillSelecting:NO];
2943             [self didChangeText];
2944         }
2945     }
2946 }
2947
2948 - (void)_changeSpellingFromMenu:(id)sender {
2949     [self _changeSpellingToWord:[sender title]];
2950 }
2951
2952 - (void)changeSpelling:(id)sender {
2953     [self _changeSpellingToWord:[[sender selectedCell] stringValue]];
2954 }
2955
2956 - (void)ignoreSpelling:(id)sender {
2957     NSRange charRange = [self rangeForUserTextChange];
2958     if ([self isEditable]) {
2959         NSSpellChecker *checker = [NSSpellChecker sharedSpellChecker];
2960         NSString *stringToIgnore;
2961         unsigned int length;
2962
2963         if (!checker) return;
2964
2965         stringToIgnore = [sender stringValue];
2966         length = [stringToIgnore length];
2967         if (stringToIgnore && length > 0) {
2968             [checker ignoreWord:stringToIgnore inSpellDocumentWithTag:[self spellCheckerDocumentTag]];
2969             if (length == charRange.length && [stringToIgnore isEqualToString:[[_getTextStorage(self) string] substringWithRange:charRange]]) {
2970                 [self _removeSpellingAttributeForRange:charRange];
2971             }
2972         }
2973     }
2974 }
2975
2976 - (void)_ignoreSpellingFromMenu:(id)sender {
2977     NSRange charRange = [self rangeForUserTextChange];
2978     if ([self isEditable] && charRange.location != NSNotFound && charRange.length > 0) {
2979         NSSpellChecker *checker = [NSSpellChecker sharedSpellChecker];
2980         if (!checker || [checker windowIsSpellingPanel:[self window]]) return;
2981         [self _removeSpellingAttributeForRange:charRange];
2982         [checker ignoreWord:[[_getTextStorage(self) string] substringWithRange:charRange] inSpellDocumentWithTag:[self spellCheckerDocumentTag]];
2983     }
2984 }
2985
2986 - (void)_learnSpellingFromMenu:(id)sender {
2987     NSRange charRange = [self rangeForUserTextChange];
2988     if ([self isEditable] && charRange.location != NSNotFound && charRange.length > 0) {
2989         NSSpellChecker *checker = [NSSpellChecker sharedSpellChecker];
2990         if (!checker || [checker windowIsSpellingPanel:[self window]]) return;
2991         [self _removeSpellingAttributeForRange:charRange];
2992         [checker learnWord:[[_getTextStorage(self) string] substringWithRange:charRange]];
2993     }
2994 }
2995
2996 - (void)_forgetSpellingFromMenu:(id)sender {
2997     NSRange charRange = [self rangeForUserTextChange];
2998     if ([self isEditable] && charRange.location != NSNotFound && charRange.length > 0) {
2999         NSSpellChecker *checker = [NSSpellChecker sharedSpellChecker];
3000         if (!checker || [checker windowIsSpellingPanel:[self window]]) return;
3001         [checker forgetWord:[[_getTextStorage(self) string] substringWithRange:charRange]];
3002     }
3003 }
3004
3005 - (void)_openLinkFromMenu:(id)sender {
3006     NSTextStorage *text = _getTextStorage(self);
3007     NSRange charRange = [self selectedRange];
3008     if (charRange.location != NSNotFound && charRange.length > 0) {
3009         id link = [text attribute:NSLinkAttributeName atIndex:charRange.location effectiveRange:NULL];
3010         if (link) {
3011             [self clickedOnLink:link atIndex:charRange.location];
3012         } else {
3013             NSString *string = [[text string] substringWithRange:charRange];
3014             link = [NSURL URLWithString:string];
3015             if (link) [[NSWorkspace sharedWorkspace] openURL:link];
3016         }
3017     }
3018 }
3019
3020 #endif
3021
3022 - (void)performFindPanelAction:(id)sender
3023 {
3024     ERROR("unimplemented");
3025 }
3026
3027 - (void)startSpeaking:(id)sender
3028 {
3029     WebBridge *bridge = [self _bridge];
3030     DOMRange *range = [bridge selectedDOMRange];
3031     if (!range || [range collapsed]) {
3032         range = [self _entireDOMRange];
3033     }
3034     [NSApp speakString:[bridge stringForRange:range]];
3035 }
3036
3037 - (void)stopSpeaking:(id)sender
3038 {
3039     [NSApp stopSpeaking:sender];
3040 }
3041
3042 - (void)insertText:(NSString *)text
3043 {
3044     WebBridge *bridge = [self _bridge];
3045     if ([bridge isSelectionEditable]) {
3046         WebView *webView = [self _webView];
3047         if ([[webView _editingDelegateForwarder] webView:webView shouldInsertText:text replacingDOMRange:[bridge selectedDOMRange] givenAction:WebViewInsertActionTyped]) {
3048             [bridge insertText:text];
3049         }
3050     }
3051 }
3052
3053 @end
3054
3055 @implementation WebHTMLView (WebTextSizing)
3056
3057 - (void)_web_textSizeMultiplierChanged
3058 {
3059     [self _updateTextSizeMultiplier];
3060 }
3061
3062 @end
3063
3064 @implementation NSArray (WebHTMLView)
3065
3066 - (void)_web_makePluginViewsPerformSelector:(SEL)selector withObject:(id)object
3067 {
3068     NSEnumerator *enumerator = [self objectEnumerator];
3069     WebNetscapePluginEmbeddedView *view;
3070     while ((view = [enumerator nextObject]) != nil) {
3071         if ([view isKindOfClass:[WebNetscapePluginEmbeddedView class]]) {
3072             [view performSelector:selector withObject:object];
3073         }
3074     }
3075 }
3076
3077 @end
3078
3079 @implementation WebElementOrTextFilter
3080
3081 + (WebElementOrTextFilter *)filter
3082 {
3083     if (!elementOrTextFilterInstance)
3084         elementOrTextFilterInstance = [[WebElementOrTextFilter alloc] init];
3085     return elementOrTextFilterInstance;
3086 }
3087
3088 - (short)acceptNode:(DOMNode *)n
3089 {
3090     return ([n isKindOfClass:[DOMElement class]] || [n isKindOfClass:[DOMText class]]) ? DOM_FILTER_ACCEPT : DOM_FILTER_SKIP;
3091 }
3092
3093 @end
3094
3095 @implementation WebHTMLView (WebInternal)
3096
3097 - (void)_updateFontPanel
3098 {
3099     // FIXME: NSTextView bails out if becoming or resigning first responder, for which it has ivar flags. Not
3100     // sure if we need to do something similar.
3101
3102     WebBridge *bridge = [self _bridge];
3103
3104     if (![bridge isSelectionEditable]) {
3105         return;
3106     }
3107
3108     NSWindow *window = [self window];
3109     // FIXME: is this first-responder check correct? What happens if a subframe is editable and is first responder?
3110     if ([NSApp keyWindow] != window || [window firstResponder] != self) {
3111         return;
3112     }
3113
3114     BOOL onlyOneFontInSelection = YES;
3115     NSFont *font = nil;
3116
3117     if (![bridge haveSelection]) {
3118         font = [bridge fontForCurrentPosition];
3119     }
3120     else {
3121         DOMRange *selection = [bridge selectedDOMRange];
3122         DOMNode *startContainer = [selection startContainer];
3123         DOMNode *endContainer = [selection endContainer];
3124
3125         ASSERT(startContainer);
3126         ASSERT(endContainer);
3127         ASSERT([[WebElementOrTextFilter filter] acceptNode:startContainer] == DOM_FILTER_ACCEPT);
3128         ASSERT([[WebElementOrTextFilter filter] acceptNode:endContainer] == DOM_FILTER_ACCEPT);
3129
3130         font = [bridge renderedFontForNode:startContainer];
3131
3132         if (startContainer != endContainer) {
3133             DOMDocument *document = [bridge DOMDocument];
3134             DOMTreeWalker *treeWalker = [document createTreeWalker:document :DOM_SHOW_ALL :[WebElementOrTextFilter filter] :NO];
3135             DOMNode *node = startContainer;
3136             [treeWalker setCurrentNode:node];
3137             while (node) {
3138                 NSFont *otherFont = [bridge renderedFontForNode:node];
3139                 if (![font isEqual:otherFont]) {
3140                     onlyOneFontInSelection = NO;
3141                     break;
3142                 }
3143                 if (node == endContainer)
3144                     break;
3145                 node = [treeWalker nextNode];
3146             }
3147         }
3148     }
3149
3150     // FIXME: for now, return a bogus font that distinguishes the empty selection from the non-empty
3151     // selection. We should be able to remove this once the rest of this code works properly.
3152     if (font == nil) {
3153         if (![bridge haveSelection]) {
3154             font = [NSFont toolTipsFontOfSize:17];
3155         } else {
3156             font = [NSFont menuFontOfSize:23];
3157         }
3158     }
3159     ASSERT(font != nil);
3160
3161     NSFontManager *fm = [NSFontManager sharedFontManager];
3162     [fm setSelectedFont:font isMultiple:!onlyOneFontInSelection];
3163     // FIXME: we don't keep track of selected attributes, or set them on the font panel. This
3164     // appears to have no effect on the UI. E.g., underlined text in Mail or TextEdit is
3165     // not reflected in the font panel. Maybe someday this will change.
3166 }
3167
3168 - (unsigned int)_delegateDragSourceActionMask
3169 {
3170     WebView *webView = [self _webView];
3171     NSPoint point = [webView convertPoint:[_private->mouseDownEvent locationInWindow] fromView:nil];
3172     _private->dragSourceActionMask = [[webView _UIDelegateForwarder] webView:webView dragSourceActionMaskForPoint:point];
3173     return _private->dragSourceActionMask;
3174 }
3175
3176 @end