webhtmlview.mm

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                                                inContext:context
                                             subresources:0]))
        return fragment;

#if defined(BUILDING_ON_TIGER) || defined(BUILDING_ON_LEOPARD)
    if ([types containsObject:NSPICTPboardType] &&
        (fragment = [self _documentFragmentFromPasteboard:pasteboard 
                                                  forType:NSPICTPboardType
                                                inContext:context
                                             subresources:0]))
        return fragment;
#endif

    // Only 10.5 and higher support setting and retrieving pasteboard types with UTIs, but we don't believe
    // that any applications on Tiger put types for which we only have a UTI, like PNG, on the pasteboard.
    if ([types containsObject:(NSString*)kUTTypePNG] &&
        (fragment = [self _documentFragmentFromPasteboard:pasteboard 
                                                  forType:(NSString*)kUTTypePNG
                                                inContext:context
                                             subresources:0]))
        return fragment;
        
    if ([types containsObject:NSURLPboardType] &&
        (fragment = [self _documentFragmentFromPasteboard:pasteboard 
                                                  forType:NSURLPboardType
                                                inContext:context
                                             subresources:0]))
        return fragment;
        
    if (allowPlainText && [types containsObject:NSStringPboardType] &&
        (fragment = [self _documentFragmentFromPasteboard:pasteboard
                                                  forType:NSStringPboardType
                                                inContext:context
                                             subresources:0])) {
        return fragment;
    }
    
    return nil;
}

- (NSString *)_plainTextFromPasteboard:(NSPasteboard *)pasteboard
{
    NSArray *types = [pasteboard types];
    
    if ([types containsObject:NSStringPboardType])
        return [pasteboard stringForType:NSStringPboardType];
    
    NSAttributedString *attributedString = nil;
    NSString *string;

    if ([types containsObject:NSRTFDPboardType])
        attributedString = [[NSAttributedString alloc] initWithRTFD:[pasteboard dataForType:NSRTFDPboardType] documentAttributes:NULL];
    if (attributedString == nil && [types containsObject:NSRTFPboardType])
        attributedString = [[NSAttributedString alloc] initWithRTF:[pasteboard dataForType:NSRTFPboardType] documentAttributes:NULL];
    if (attributedString != nil) {
        string = [[attributedString string] copy];
        [attributedString release];
        return [string autorelease];
    }
    
    if ([types containsObject:NSFilenamesPboardType]) {
        string = [[pasteboard propertyListForType:NSFilenamesPboardType] componentsJoinedByString:@"\n"];
        if (string != nil)
            return string;
    }
    
    NSURL *URL;
    
    if ((URL = [NSURL URLFromPasteboard:pasteboard])) {
        string = [URL _web_userVisibleString];
        if ([string length] > 0)
            return string;
    }
    
    return nil;
}

- (void)_pasteWithPasteboard:(NSPasteboard *)pasteboard allowPlainText:(BOOL)allowPlainText
{
    DOMRange *range = [self _selectedRange];
    DOMDocumentFragment *fragment = [self _documentFragmentFromPasteboard:pasteboard
        inContext:range allowPlainText:allowPlainText];
    WebFrame *frame = [self _frame];
    if (fragment && [self _shouldInsertFragment:fragment replacingDOMRange:[self _selectedRange] givenAction:WebViewInsertActionPasted]) {
        [frame _replaceSelectionWithFragment:fragment selectReplacement:NO smartReplace:[self _canSmartReplaceWithPasteboard:pasteboard] matchStyle:NO];
    }
}

- (void)_pasteAsPlainTextWithPasteboard:(NSPasteboard *)pasteboard
{
    NSString *text = [self _plainTextFromPasteboard:pasteboard];
    if ([self _shouldReplaceSelectionWithText:text givenAction:WebViewInsertActionPasted])
        [[self _frame] _replaceSelectionWithText:text selectReplacement:NO smartReplace:[self _canSmartReplaceWithPasteboard:pasteboard]];
}

- (void)_removeMouseMovedObserverUnconditionally
{
    if (!_private || !_private->observingMouseMovedNotifications)
        return;
    
    [[NSNotificationCenter defaultCenter] removeObserver:self name:WKMouseMovedNotification() object:nil];
    _private->observingMouseMovedNotifications = false;
}

- (void)_removeSuperviewObservers
{
    if (!_private || !_private->observingSuperviewNotifications)
        return;
    
    NSView *superview = [self superview];
    if (!superview || ![self window])
        return;
    
    NSNotificationCenter *notificationCenter = [NSNotificationCenter defaultCenter];
    [notificationCenter removeObserver:self name:NSViewFrameDidChangeNotification object:superview];
    [notificationCenter removeObserver:self name:NSViewBoundsDidChangeNotification object:superview];
    
    _private->observingSuperviewNotifications = false;
}

- (void)_removeWindowObservers
{
    if (!_private->observingWindowNotifications)
        return;
    
    NSWindow *window = [self window];
    if (!window)
        return;
    
    NSNotificationCenter *notificationCenter = [NSNotificationCenter defaultCenter];
    [notificationCenter removeObserver:self name:NSWindowDidBecomeKeyNotification object:nil];
    [notificationCenter removeObserver:self name:NSWindowDidResignKeyNotification object:nil];
    [notificationCenter removeObserver:self name:NSWindowWillCloseNotification object:window];
    [notificationCenter removeObserver:self name:WKWindowWillOrderOnScreenNotification() object:window];
    
    _private->observingWindowNotifications = false;
}

- (BOOL)_shouldInsertFragment:(DOMDocumentFragment *)fragment replacingDOMRange:(DOMRange *)range givenAction:(WebViewInsertAction)action
{
    WebView *webView = [self _webView];
    DOMNode *child = [fragment firstChild];
    if ([fragment lastChild] == child && [child isKindOfClass:[DOMCharacterData class]])
        return [[webView _editingDelegateForwarder] webView:webView shouldInsertText:[(DOMCharacterData *)child data] replacingDOMRange:range givenAction:action];
    return [[webView _editingDelegateForwarder] webView:webView shouldInsertNode:fragment replacingDOMRange:range givenAction:action];
}

- (BOOL)_shouldInsertText:(NSString *)text replacingDOMRange:(DOMRange *)range givenAction:(WebViewInsertAction)action
{
    WebView *webView = [self _webView];
    return [[webView _editingDelegateForwarder] webView:webView shouldInsertText:text replacingDOMRange:range givenAction:action];
}

- (BOOL)_shouldReplaceSelectionWithText:(NSString *)text givenAction:(WebViewInsertAction)action
{
    return [self _shouldInsertText:text replacingDOMRange:[self _selectedRange] givenAction:action];
}

// Calculate the vertical size of the view that fits on a single page
- (float)_calculatePrintHeight
{
    // Obtain the print info object for the current operation
    NSPrintInfo *pi = [[NSPrintOperation currentOperation] printInfo];
    
    // Calculate the page height in points
    NSSize paperSize = [pi paperSize];
    return paperSize.height - [pi topMargin] - [pi bottomMargin];
}

- (DOMRange *)_selectedRange
{
    Frame* coreFrame = core([self _frame]);
    return coreFrame ? kit(coreFrame->selection()->toNormalizedRange().get()) : nil;
}

- (BOOL)_shouldDeleteRange:(DOMRange *)range
{
    Frame* coreFrame = core([self _frame]);
    return coreFrame && coreFrame->editor()->shouldDeleteRange(core(range));
}

- (NSView *)_hitViewForEvent:(NSEvent *)event
{
    // Usually, we hack AK's hitTest method to catch all events at the topmost WebHTMLView.  
    // Callers of this method, however, want to query the deepest view instead.
    forceNSViewHitTest = YES;
    NSView *hitView = [[[self window] contentView] hitTest:[event locationInWindow]];
    forceNSViewHitTest = NO;    
    return hitView;
}

- (void)_writeSelectionWithPasteboardTypes:(NSArray *)types toPasteboard:(NSPasteboard *)pasteboard cachedAttributedString:(NSAttributedString *)attributedString
{
    // Put HTML on the pasteboard.
    if ([types containsObject:WebArchivePboardType]) {
        if (RefPtr<LegacyWebArchive> coreArchive = LegacyWebArchive::createFromSelection(core([self _frame]))) {
            if (RetainPtr<CFDataRef> data = coreArchive ? coreArchive->rawDataRepresentation() : 0)
                [pasteboard setData:(NSData *)data.get() forType:WebArchivePboardType];
        }
    }
    
    // Put the attributed string on the pasteboard (RTF/RTFD format).
    if ([types containsObject:NSRTFDPboardType]) {
        if (attributedString == nil) {
            attributedString = [self selectedAttributedString];
        }        
        NSData *RTFDData = [attributedString RTFDFromRange:NSMakeRange(0, [attributedString length]) documentAttributes:nil];
        [pasteboard setData:RTFDData forType:NSRTFDPboardType];
    }        
    if ([types containsObject:NSRTFPboardType]) {
        if (attributedString == nil) {
            attributedString = [self selectedAttributedString];
        }
        if ([attributedString containsAttachments]) {
            attributedString = [attributedString _web_attributedStringByStrippingAttachmentCharacters];
        }
        NSData *RTFData = [attributedString RTFFromRange:NSMakeRange(0, [attributedString length]) documentAttributes:nil];
        [pasteboard setData:RTFData forType:NSRTFPboardType];
    }
    
    // Put plain string on the pasteboard.
    if ([types containsObject:NSStringPboardType]) {
        // Map &nbsp; to a plain old space because this is better for source code, other browsers do it,
        // and because HTML forces you to do this any time you want two spaces in a row.
        NSMutableString *s = [[self selectedString] mutableCopy];
        const unichar NonBreakingSpaceCharacter = 0xA0;
        NSString *NonBreakingSpaceString = [NSString stringWithCharacters:&NonBreakingSpaceCharacter length:1];
        [s replaceOccurrencesOfString:NonBreakingSpaceString withString:@" " options:0 range:NSMakeRange(0, [s length])];
        [pasteboard setString:s forType:NSStringPboardType];
        [s release];
    }
    
    if ([self _canSmartCopyOrDelete] && [types containsObject:WebSmartPastePboardType]) {
        [pasteboard setData:nil forType:WebSmartPastePboardType];
    }
}

- (void)_setMouseDownEvent:(NSEvent *)event
{
    ASSERT(!event || [event type] == NSLeftMouseDown || [event type] == NSRightMouseDown || [event type] == NSOtherMouseDown);

    if (event == _private->mouseDownEvent)
        return;

    [event retain];
    [_private->mouseDownEvent release];
    _private->mouseDownEvent = event;
}

- (void)_cancelUpdateFocusedAndActiveStateTimer
{
    if (_private->updateFocusedAndActiveStateTimer) {
        CFRunLoopTimerInvalidate(_private->updateFocusedAndActiveStateTimer);
        CFRelease(_private->updateFocusedAndActiveStateTimer);
        _private->updateFocusedAndActiveStateTimer = NULL;
    }
}

- (void)_cancelUpdateMouseoverTimer
{
    if (_private->updateMouseoverTimer) {
        CFRunLoopTimerInvalidate(_private->updateMouseoverTimer);
        CFRelease(_private->updateMouseoverTimer);
        _private->updateMouseoverTimer = NULL;
    }
}

- (WebHTMLView *)_topHTMLView
{
    // FIXME: this can fail if the dataSource is nil, which happens when the WebView is tearing down from the window closing.
    WebHTMLView *view = (WebHTMLView *)[[[[_private->dataSource _webView] mainFrame] frameView] documentView];
    ASSERT(view);
    ASSERT([view isKindOfClass:[WebHTMLView class]]);
    return view;
}

- (BOOL)_isTopHTMLView
{
    // FIXME: this should be a cached boolean that doesn't rely on _topHTMLView since that can fail (see _topHTMLView).
    return self == [self _topHTMLView];
}

- (void)_web_setPrintingModeRecursive
{
    [self _setPrinting:YES minimumPageWidth:0.0f maximumPageWidth:0.0f adjustViewSize:NO];

#ifndef NDEBUG
    _private->enumeratingSubviews = YES;
#endif

    NSMutableArray *descendantWebHTMLViews = [[NSMutableArray alloc] init];

    [self _web_addDescendantWebHTMLViewsToArray:descendantWebHTMLViews];

    unsigned count = [descendantWebHTMLViews count];
    for (unsigned i = 0; i < count; ++i)
        [[descendantWebHTMLViews objectAtIndex:i] _setPrinting:YES minimumPageWidth:0.0f maximumPageWidth:0.0f adjustViewSize:NO];

    [descendantWebHTMLViews release];

#ifndef NDEBUG
    _private->enumeratingSubviews = NO;
#endif
}

- (void)_web_clearPrintingModeRecursive
{
    [self _setPrinting:NO minimumPageWidth:0.0f maximumPageWidth:0.0f adjustViewSize:NO];

#ifndef NDEBUG
    _private->enumeratingSubviews = YES;
#endif

    NSMutableArray *descendantWebHTMLViews = [[NSMutableArray alloc] init];

    [self _web_addDescendantWebHTMLViewsToArray:descendantWebHTMLViews];

    unsigned count = [descendantWebHTMLViews count];
    for (unsigned i = 0; i < count; ++i)
        [[descendantWebHTMLViews objectAtIndex:i] _setPrinting:NO minimumPageWidth:0.0f maximumPageWidth:0.0f adjustViewSize:NO];

    [descendantWebHTMLViews release];

#ifndef NDEBUG
    _private->enumeratingSubviews = NO;
#endif
}

- (void)_web_setPrintingModeRecursiveAndAdjustViewSize
{
    [self _setPrinting:YES minimumPageWidth:0.0f maximumPageWidth:0.0f adjustViewSize:YES];

#ifndef NDEBUG
    _private->enumeratingSubviews = YES;
#endif

    NSMutableArray *descendantWebHTMLViews = [[NSMutableArray alloc] init];

    [self _web_addDescendantWebHTMLViewsToArray:descendantWebHTMLViews];

    unsigned count = [descendantWebHTMLViews count];
    for (unsigned i = 0; i < count; ++i)
        [[descendantWebHTMLViews objectAtIndex:i] _setPrinting:YES minimumPageWidth:0.0f maximumPageWidth:0.0f adjustViewSize:YES];

    [descendantWebHTMLViews release];

#ifndef NDEBUG