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1/*
2 * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009 Apple Inc. All rights reserved.
3 * Copyright (C) 2006 James G. Speth (speth@end.com)
4 * Copyright (C) 2006 Samuel Weinig (sam.weinig@gmail.com)
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 * 1. Redistributions of source code must retain the above copyright
10 *    notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 *    notice, this list of conditions and the following disclaimer in the
13 *    documentation and/or other materials provided with the distribution.
14 *
15 * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY
16 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
18 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE COMPUTER, INC. OR
19 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
20 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
21 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
22 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
23 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
24 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
25 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
26 */
27
28#import "config.h"
29#import "DOMInternal.h" // import first to make the private/public trick work
30#import "DOM.h"
31
32#import "DOMRangeInternal.h"
33#import "DOMElementInternal.h"
34#import "DOMNodeInternal.h"
35#import "DOMHTMLCanvasElement.h"
36#import "Frame.h"
37#import "HTMLNames.h"
38#import "HTMLElement.h"
39#import "RenderImage.h"
40#import "NodeFilter.h"
41#import "WebScriptObjectPrivate.h"
42#import <wtf/HashMap.h>
43
44#if ENABLE(SVG_DOM_OBJC_BINDINGS)
45#import "DOMSVG.h"
46#import "SVGElementInstance.h"
47#endif
48
49using namespace JSC;
50using namespace WebCore;
51
52// FIXME: Would be nice to break this up into separate files to match how other WebKit
53// code is organized.
54
55//------------------------------------------------------------------------------------------
56// DOMNode
57
58namespace WebCore {
59
60typedef HashMap<const QualifiedName::QualifiedNameImpl*, Class> ObjCClassMap;
61static ObjCClassMap* elementClassMap;
62
63static void addElementClass(const QualifiedName& tag, Class objCClass)
64{
65    elementClassMap->set(tag.impl(), objCClass);
66}
67
68static void createElementClassMap()
69{
70    // Create the table.
71    elementClassMap = new ObjCClassMap;
72
73    // FIXME: Reflect marquee once the API has been determined.
74
75    // Populate it with HTML and SVG element classes.
76    addElementClass(HTMLNames::aTag, [DOMHTMLAnchorElement class]);
77    addElementClass(HTMLNames::appletTag, [DOMHTMLAppletElement class]);
78    addElementClass(HTMLNames::areaTag, [DOMHTMLAreaElement class]);
79    addElementClass(HTMLNames::baseTag, [DOMHTMLBaseElement class]);
80    addElementClass(HTMLNames::basefontTag, [DOMHTMLBaseFontElement class]);
81    addElementClass(HTMLNames::bodyTag, [DOMHTMLBodyElement class]);
82    addElementClass(HTMLNames::brTag, [DOMHTMLBRElement class]);
83    addElementClass(HTMLNames::buttonTag, [DOMHTMLButtonElement class]);
84    addElementClass(HTMLNames::canvasTag, [DOMHTMLCanvasElement class]);
85    addElementClass(HTMLNames::captionTag, [DOMHTMLTableCaptionElement class]);
86    addElementClass(HTMLNames::colTag, [DOMHTMLTableColElement class]);
87    addElementClass(HTMLNames::colgroupTag, [DOMHTMLTableColElement class]);
88    addElementClass(HTMLNames::delTag, [DOMHTMLModElement class]);
89    addElementClass(HTMLNames::dirTag, [DOMHTMLDirectoryElement class]);
90    addElementClass(HTMLNames::divTag, [DOMHTMLDivElement class]);
91    addElementClass(HTMLNames::dlTag, [DOMHTMLDListElement class]);
92    addElementClass(HTMLNames::embedTag, [DOMHTMLEmbedElement class]);
93    addElementClass(HTMLNames::fieldsetTag, [DOMHTMLFieldSetElement class]);
94    addElementClass(HTMLNames::fontTag, [DOMHTMLFontElement class]);
95    addElementClass(HTMLNames::formTag, [DOMHTMLFormElement class]);
96    addElementClass(HTMLNames::frameTag, [DOMHTMLFrameElement class]);
97    addElementClass(HTMLNames::framesetTag, [DOMHTMLFrameSetElement class]);
98    addElementClass(HTMLNames::h1Tag, [DOMHTMLHeadingElement class]);
99    addElementClass(HTMLNames::h2Tag, [DOMHTMLHeadingElement class]);
100    addElementClass(HTMLNames::h3Tag, [DOMHTMLHeadingElement class]);
101    addElementClass(HTMLNames::h4Tag, [DOMHTMLHeadingElement class]);
102    addElementClass(HTMLNames::h5Tag, [DOMHTMLHeadingElement class]);
103    addElementClass(HTMLNames::h6Tag, [DOMHTMLHeadingElement class]);
104    addElementClass(HTMLNames::headTag, [DOMHTMLHeadElement class]);
105    addElementClass(HTMLNames::hrTag, [DOMHTMLHRElement class]);
106    addElementClass(HTMLNames::htmlTag, [DOMHTMLHtmlElement class]);
107    addElementClass(HTMLNames::iframeTag, [DOMHTMLIFrameElement class]);
108    addElementClass(HTMLNames::imgTag, [DOMHTMLImageElement class]);
109    addElementClass(HTMLNames::inputTag, [DOMHTMLInputElement class]);
110    addElementClass(HTMLNames::insTag, [DOMHTMLModElement class]);
111    addElementClass(HTMLNames::isindexTag, [DOMHTMLIsIndexElement class]);
112    addElementClass(HTMLNames::labelTag, [DOMHTMLLabelElement class]);
113    addElementClass(HTMLNames::legendTag, [DOMHTMLLegendElement class]);
114    addElementClass(HTMLNames::liTag, [DOMHTMLLIElement class]);
115    addElementClass(HTMLNames::linkTag, [DOMHTMLLinkElement class]);
116    addElementClass(HTMLNames::listingTag, [DOMHTMLPreElement class]);
117    addElementClass(HTMLNames::mapTag, [DOMHTMLMapElement class]);
118    addElementClass(HTMLNames::marqueeTag, [DOMHTMLMarqueeElement class]);
119    addElementClass(HTMLNames::menuTag, [DOMHTMLMenuElement class]);
120    addElementClass(HTMLNames::metaTag, [DOMHTMLMetaElement class]);
121    addElementClass(HTMLNames::objectTag, [DOMHTMLObjectElement class]);
122    addElementClass(HTMLNames::olTag, [DOMHTMLOListElement class]);
123    addElementClass(HTMLNames::optgroupTag, [DOMHTMLOptGroupElement class]);
124    addElementClass(HTMLNames::optionTag, [DOMHTMLOptionElement class]);
125    addElementClass(HTMLNames::pTag, [DOMHTMLParagraphElement class]);
126    addElementClass(HTMLNames::paramTag, [DOMHTMLParamElement class]);
127    addElementClass(HTMLNames::preTag, [DOMHTMLPreElement class]);
128    addElementClass(HTMLNames::qTag, [DOMHTMLQuoteElement class]);
129    addElementClass(HTMLNames::scriptTag, [DOMHTMLScriptElement class]);
130    addElementClass(HTMLNames::keygenTag, [DOMHTMLSelectElement class]);
131    addElementClass(HTMLNames::selectTag, [DOMHTMLSelectElement class]);
132    addElementClass(HTMLNames::styleTag, [DOMHTMLStyleElement class]);
133    addElementClass(HTMLNames::tableTag, [DOMHTMLTableElement class]);
134    addElementClass(HTMLNames::tbodyTag, [DOMHTMLTableSectionElement class]);
135    addElementClass(HTMLNames::tdTag, [DOMHTMLTableCellElement class]);
136    addElementClass(HTMLNames::textareaTag, [DOMHTMLTextAreaElement class]);
137    addElementClass(HTMLNames::tfootTag, [DOMHTMLTableSectionElement class]);
138    addElementClass(HTMLNames::thTag, [DOMHTMLTableCellElement class]);
139    addElementClass(HTMLNames::theadTag, [DOMHTMLTableSectionElement class]);
140    addElementClass(HTMLNames::titleTag, [DOMHTMLTitleElement class]);
141    addElementClass(HTMLNames::trTag, [DOMHTMLTableRowElement class]);
142    addElementClass(HTMLNames::ulTag, [DOMHTMLUListElement class]);
143    addElementClass(HTMLNames::xmpTag, [DOMHTMLPreElement class]);
144
145#if ENABLE(SVG_DOM_OBJC_BINDINGS)
146    addElementClass(SVGNames::aTag, [DOMSVGAElement class]);
147    addElementClass(SVGNames::altGlyphTag, [DOMSVGAltGlyphElement class]);
148#if ENABLE(SVG_ANIMATION)
149    addElementClass(SVGNames::animateTag, [DOMSVGAnimateElement class]);
150    addElementClass(SVGNames::animateColorTag, [DOMSVGAnimateColorElement class]);
151    addElementClass(SVGNames::animateTransformTag, [DOMSVGAnimateTransformElement class]);
152    addElementClass(SVGNames::setTag, [DOMSVGSetElement class]);
153#endif
154    addElementClass(SVGNames::circleTag, [DOMSVGCircleElement class]);
155    addElementClass(SVGNames::clipPathTag, [DOMSVGClipPathElement class]);
156    addElementClass(SVGNames::cursorTag, [DOMSVGCursorElement class]);
157#if ENABLE(SVG_FONTS)
158    addElementClass(SVGNames::definition_srcTag, [DOMSVGDefinitionSrcElement class]);
159#endif
160    addElementClass(SVGNames::defsTag, [DOMSVGDefsElement class]);
161    addElementClass(SVGNames::descTag, [DOMSVGDescElement class]);
162    addElementClass(SVGNames::ellipseTag, [DOMSVGEllipseElement class]);
163#if ENABLE(FILTERS)
164    addElementClass(SVGNames::feBlendTag, [DOMSVGFEBlendElement class]);
165    addElementClass(SVGNames::feColorMatrixTag, [DOMSVGFEColorMatrixElement class]);
166    addElementClass(SVGNames::feComponentTransferTag, [DOMSVGFEComponentTransferElement class]);
167    addElementClass(SVGNames::feCompositeTag, [DOMSVGFECompositeElement class]);
168    addElementClass(SVGNames::feDiffuseLightingTag, [DOMSVGFEDiffuseLightingElement class]);
169    addElementClass(SVGNames::feDisplacementMapTag, [DOMSVGFEDisplacementMapElement class]);
170    addElementClass(SVGNames::feDistantLightTag, [DOMSVGFEDistantLightElement class]);
171    addElementClass(SVGNames::feFloodTag, [DOMSVGFEFloodElement class]);
172    addElementClass(SVGNames::feFuncATag, [DOMSVGFEFuncAElement class]);
173    addElementClass(SVGNames::feFuncBTag, [DOMSVGFEFuncBElement class]);
174    addElementClass(SVGNames::feFuncGTag, [DOMSVGFEFuncGElement class]);
175    addElementClass(SVGNames::feFuncRTag, [DOMSVGFEFuncRElement class]);
176    addElementClass(SVGNames::feGaussianBlurTag, [DOMSVGFEGaussianBlurElement class]);
177    addElementClass(SVGNames::feImageTag, [DOMSVGFEImageElement class]);
178    addElementClass(SVGNames::feMergeTag, [DOMSVGFEMergeElement class]);
179    addElementClass(SVGNames::feMergeNodeTag, [DOMSVGFEMergeNodeElement class]);
180    addElementClass(SVGNames::feOffsetTag, [DOMSVGFEOffsetElement class]);
181    addElementClass(SVGNames::fePointLightTag, [DOMSVGFEPointLightElement class]);
182    addElementClass(SVGNames::feSpecularLightingTag, [DOMSVGFESpecularLightingElement class]);
183    addElementClass(SVGNames::feSpotLightTag, [DOMSVGFESpotLightElement class]);
184    addElementClass(SVGNames::feTileTag, [DOMSVGFETileElement class]);
185    addElementClass(SVGNames::feTurbulenceTag, [DOMSVGFETurbulenceElement class]);
186    addElementClass(SVGNames::filterTag, [DOMSVGFilterElement class]);
187#endif
188#if ENABLE(SVG_FONTS)
189    addElementClass(SVGNames::fontTag, [DOMSVGFontElement class]);
190    addElementClass(SVGNames::font_faceTag, [DOMSVGFontFaceElement class]);
191    addElementClass(SVGNames::font_face_formatTag, [DOMSVGFontFaceFormatElement class]);
192    addElementClass(SVGNames::font_face_nameTag, [DOMSVGFontFaceNameElement class]);
193    addElementClass(SVGNames::font_face_srcTag, [DOMSVGFontFaceSrcElement class]);
194    addElementClass(SVGNames::font_face_uriTag, [DOMSVGFontFaceUriElement class]);
195    addElementClass(SVGNames::glyphTag, [DOMSVGGlyphElement class]);
196#endif
197    addElementClass(SVGNames::gTag, [DOMSVGGElement class]);
198    addElementClass(SVGNames::imageTag, [DOMSVGImageElement class]);
199    addElementClass(SVGNames::lineTag, [DOMSVGLineElement class]);
200    addElementClass(SVGNames::linearGradientTag, [DOMSVGLinearGradientElement class]);
201    addElementClass(SVGNames::markerTag, [DOMSVGMarkerElement class]);
202    addElementClass(SVGNames::maskTag, [DOMSVGMaskElement class]);
203    addElementClass(SVGNames::metadataTag, [DOMSVGMetadataElement class]);
204#if ENABLE(SVG_FONTS)
205    addElementClass(SVGNames::missing_glyphTag, [DOMSVGMissingGlyphElement class]);
206#endif
207    addElementClass(SVGNames::pathTag, [DOMSVGPathElement class]);
208    addElementClass(SVGNames::patternTag, [DOMSVGPatternElement class]);
209    addElementClass(SVGNames::polygonTag, [DOMSVGPolygonElement class]);
210    addElementClass(SVGNames::polylineTag, [DOMSVGPolylineElement class]);
211    addElementClass(SVGNames::radialGradientTag, [DOMSVGRadialGradientElement class]);
212    addElementClass(SVGNames::rectTag, [DOMSVGRectElement class]);
213    addElementClass(SVGNames::scriptTag, [DOMSVGScriptElement class]);
214    addElementClass(SVGNames::stopTag, [DOMSVGStopElement class]);
215    addElementClass(SVGNames::styleTag, [DOMSVGStyleElement class]);
216    addElementClass(SVGNames::svgTag, [DOMSVGSVGElement class]);
217    addElementClass(SVGNames::switchTag, [DOMSVGSwitchElement class]);
218    addElementClass(SVGNames::symbolTag, [DOMSVGSymbolElement class]);
219    addElementClass(SVGNames::textTag, [DOMSVGTextElement class]);
220    addElementClass(SVGNames::titleTag, [DOMSVGTitleElement class]);
221    addElementClass(SVGNames::trefTag, [DOMSVGTRefElement class]);
222    addElementClass(SVGNames::tspanTag, [DOMSVGTSpanElement class]);
223    addElementClass(SVGNames::textPathTag, [DOMSVGTextPathElement class]);
224    addElementClass(SVGNames::useTag, [DOMSVGUseElement class]);
225    addElementClass(SVGNames::viewTag, [DOMSVGViewElement class]);
226#endif
227}
228
229static Class lookupElementClass(const QualifiedName& tag)
230{
231    // Do a special lookup to ignore element prefixes
232    if (tag.hasPrefix())
233        return elementClassMap->get(QualifiedName(nullAtom, tag.localName(), tag.namespaceURI()).impl());
234
235    return elementClassMap->get(tag.impl());
236}
237
238static Class elementClass(const QualifiedName& tag, Class defaultClass)
239{
240    if (!elementClassMap)
241        createElementClassMap();
242    Class objcClass = lookupElementClass(tag);
243    if (!objcClass)
244        objcClass = defaultClass;
245    return objcClass;
246}
247
248static NSArray *kit(const Vector<IntRect>& rects)
249{
250    size_t size = rects.size();
251    NSMutableArray *array = [NSMutableArray arrayWithCapacity:size];
252    for (size_t i = 0; i < size; ++i)
253        [array addObject:[NSValue valueWithRect:rects[i]]];
254    return array;
255}
256
257} // namespace WebCore
258
259@implementation DOMNode (WebCoreInternal)
260
261- (NSString *)description
262{
263    if (!_internal)
264        return [NSString stringWithFormat:@"<%@: null>", [[self class] description], self];
265
266    NSString *value = [self nodeValue];
267    if (value)
268        return [NSString stringWithFormat:@"<%@ [%@]: %p '%@'>",
269            [[self class] description], [self nodeName], _internal, value];
270
271    return [NSString stringWithFormat:@"<%@ [%@]: %p>", [[self class] description], [self nodeName], _internal];
272}
273
274- (JSC::Bindings::RootObject*)_rootObject
275{
276    WebCore::Frame* frame = core(self)->document()->frame();
277    if (!frame)
278        return 0;
279    return frame->script()->bindingRootObject();
280}
281
282@end
283
284Class kitClass(WebCore::Node* impl)
285{
286    switch (impl->nodeType()) {
287        case WebCore::Node::ELEMENT_NODE:
288            if (impl->isHTMLElement())
289                return WebCore::elementClass(static_cast<WebCore::HTMLElement*>(impl)->tagQName(), [DOMHTMLElement class]);
290#if ENABLE(SVG_DOM_OBJC_BINDINGS)
291            if (impl->isSVGElement())
292                return WebCore::elementClass(static_cast<WebCore::SVGElement*>(impl)->tagQName(), [DOMSVGElement class]);
293#endif
294            return [DOMElement class];
295        case WebCore::Node::ATTRIBUTE_NODE:
296            return [DOMAttr class];
297        case WebCore::Node::TEXT_NODE:
298            return [DOMText class];
299        case WebCore::Node::CDATA_SECTION_NODE:
300            return [DOMCDATASection class];
301        case WebCore::Node::ENTITY_REFERENCE_NODE:
302            return [DOMEntityReference class];
303        case WebCore::Node::ENTITY_NODE:
304            return [DOMEntity class];
305        case WebCore::Node::PROCESSING_INSTRUCTION_NODE:
306            return [DOMProcessingInstruction class];
307        case WebCore::Node::COMMENT_NODE:
308            return [DOMComment class];
309        case WebCore::Node::DOCUMENT_NODE:
310            if (static_cast<WebCore::Document*>(impl)->isHTMLDocument())
311                return [DOMHTMLDocument class];
312#if ENABLE(SVG_DOM_OBJC_BINDINGS)
313            if (static_cast<WebCore::Document*>(impl)->isSVGDocument())
314                return [DOMSVGDocument class];
315#endif
316            return [DOMDocument class];
317        case WebCore::Node::DOCUMENT_TYPE_NODE:
318            return [DOMDocumentType class];
319        case WebCore::Node::DOCUMENT_FRAGMENT_NODE:
320            return [DOMDocumentFragment class];
321        case WebCore::Node::NOTATION_NODE:
322            return [DOMNotation class];
323        case WebCore::Node::XPATH_NAMESPACE_NODE:
324            // FIXME: Create an XPath objective C wrapper
325            // See http://bugs.webkit.org/show_bug.cgi?id=8755
326            return nil;
327    }
328    ASSERT_NOT_REACHED();
329    return nil;
330}
331
332id <DOMEventTarget> kit(WebCore::EventTarget* eventTarget)
333{
334    if (!eventTarget)
335        return nil;
336
337    if (WebCore::Node* node = eventTarget->toNode())
338        return kit(node);
339
340#if ENABLE(SVG_DOM_OBJC_BINDINGS)
341    if (WebCore::SVGElementInstance* svgElementInstance = eventTarget->toSVGElementInstance())
342        return kit(svgElementInstance);
343#endif
344
345    // We don't have an ObjC binding for XMLHttpRequest.
346
347    return nil;
348}
349
350@implementation DOMNode (DOMNodeExtensions)
351
352- (NSRect)boundingBox
353{
354    // FIXME: Could we move this function to WebCore::Node and autogenerate?
355    core(self)->document()->updateLayoutIgnorePendingStylesheets();
356    WebCore::RenderObject* renderer = core(self)->renderer();
357    if (!renderer)
358        return NSZeroRect;
359    return renderer->absoluteBoundingBoxRect();
360}
361
362- (NSArray *)textRects
363{
364    // FIXME: Could we move this function to WebCore::Node and autogenerate?
365    core(self)->document()->updateLayoutIgnorePendingStylesheets();
366    if (!core(self)->renderer())
367        return nil;
368    RefPtr<Range> range = Range::create(core(self)->document());
369    WebCore::ExceptionCode ec = 0;
370    range->selectNodeContents(core(self), ec);
371    Vector<WebCore::IntRect> rects;
372    range->textRects(rects);
373    return kit(rects);
374}
375
376- (NSArray *)lineBoxRects
377{
378    return [self textRects];
379}
380
381@end
382
383@implementation DOMNode (DOMNodeExtensionsPendingPublic)
384
385- (NSImage *)renderedImage
386{
387    // FIXME: Could we move this function to WebCore::Node and autogenerate?
388    WebCore::Node* node = core(self);
389    WebCore::Frame* frame = node->document()->frame();
390    if (!frame)
391        return nil;
392    return frame->nodeImage(node);
393}
394
395@end
396
397@implementation DOMRange (DOMRangeExtensions)
398
399- (NSRect)boundingBox
400{
401    // FIXME: The call to updateLayoutIgnorePendingStylesheets should be moved into WebCore::Range.
402    core(self)->ownerDocument()->updateLayoutIgnorePendingStylesheets();
403    return core(self)->boundingBox();
404}
405
406- (NSArray *)textRects
407{
408    // FIXME: The call to updateLayoutIgnorePendingStylesheets should be moved into WebCore::Range.
409    Vector<WebCore::IntRect> rects;
410    core(self)->ownerDocument()->updateLayoutIgnorePendingStylesheets();
411    core(self)->textRects(rects);
412    return kit(rects);
413}
414
415- (NSArray *)lineBoxRects
416{
417    // FIXME: Remove this once all clients stop using it and we drop Leopard support.
418    return [self textRects];
419}
420
421@end
422
423//------------------------------------------------------------------------------------------
424// DOMElement
425
426@implementation DOMElement (DOMElementAppKitExtensions)
427
428- (NSImage*)image
429{
430    // FIXME: Could we move this function to WebCore::Node and autogenerate?
431    WebCore::RenderObject* renderer = core(self)->renderer();
432    if (!renderer || !renderer->isImage())
433        return nil;
434    WebCore::CachedImage* cachedImage = static_cast<WebCore::RenderImage*>(renderer)->cachedImage();
435    if (!cachedImage || cachedImage->errorOccurred())
436        return nil;
437    return cachedImage->image()->getNSImage();
438}
439
440@end
441
442@implementation DOMElement (WebPrivate)
443
444- (NSFont *)_font
445{
446    // FIXME: Could we move this function to WebCore::Element and autogenerate?
447    WebCore::RenderObject* renderer = core(self)->renderer();
448    if (!renderer)
449        return nil;
450    return renderer->style()->font().primaryFont()->getNSFont();
451}
452
453- (NSData *)_imageTIFFRepresentation
454{
455    // FIXME: Could we move this function to WebCore::Element and autogenerate?
456    WebCore::RenderObject* renderer = core(self)->renderer();
457    if (!renderer || !renderer->isImage())
458        return nil;
459    WebCore::CachedImage* cachedImage = static_cast<WebCore::RenderImage*>(renderer)->cachedImage();
460    if (!cachedImage || cachedImage->errorOccurred())
461        return nil;
462    return (NSData *)cachedImage->image()->getTIFFRepresentation();
463}
464
465- (NSURL *)_getURLAttribute:(NSString *)name
466{
467    // FIXME: Could we move this function to WebCore::Element and autogenerate?
468    ASSERT(name);
469    WebCore::Element* element = core(self);
470    ASSERT(element);
471    return element->document()->completeURL(deprecatedParseURL(element->getAttribute(name)));
472}
473
474- (BOOL)isFocused
475{
476    // FIXME: Could we move this function to WebCore::Element and autogenerate?
477    WebCore::Element* element = core(self);
478    return element->document()->focusedNode() == element;
479}
480
481@end
482
483//------------------------------------------------------------------------------------------
484// DOMRange
485
486@implementation DOMRange (WebPrivate)
487
488- (NSString *)description
489{
490    if (!_internal)
491        return @"<DOMRange: null>";
492    return [NSString stringWithFormat:@"<DOMRange: %@ %d %@ %d>",
493               [self startContainer], [self startOffset], [self endContainer], [self endOffset]];
494}
495
496// FIXME: This should be removed as soon as all internal Apple uses of it have been replaced with
497// calls to the public method - (NSString *)text.
498- (NSString *)_text
499{
500    return [self text];
501}
502
503@end
504
505//------------------------------------------------------------------------------------------
506// DOMRGBColor
507
508@implementation DOMRGBColor (WebPrivate)
509
510// FIXME: This should be removed as soon as all internal Apple uses of it have been replaced with
511// calls to the public method - (NSColor *)color.
512- (NSColor *)_color
513{
514    return [self color];
515}
516
517@end
518
519
520//------------------------------------------------------------------------------------------
521// DOMNodeFilter
522
523DOMNodeFilter *kit(WebCore::NodeFilter* impl)
524{
525    if (!impl)
526        return nil;
527
528    if (DOMNodeFilter *wrapper = getDOMWrapper(impl))
529        return [[wrapper retain] autorelease];
530
531    DOMNodeFilter *wrapper = [[DOMNodeFilter alloc] _init];
532    wrapper->_internal = reinterpret_cast<DOMObjectInternal*>(impl);
533    impl->ref();
534    addDOMWrapper(wrapper, impl);
535    return [wrapper autorelease];
536}
537
538WebCore::NodeFilter* core(DOMNodeFilter *wrapper)
539{
540    return wrapper ? reinterpret_cast<WebCore::NodeFilter*>(wrapper->_internal) : 0;
541}
542
543@implementation DOMNodeFilter
544
545- (void)dealloc
546{
547    if (_internal)
548        reinterpret_cast<WebCore::NodeFilter*>(_internal)->deref();
549    [super dealloc];
550}
551
552- (void)finalize
553{
554    if (_internal)
555        reinterpret_cast<WebCore::NodeFilter*>(_internal)->deref();
556    [super finalize];
557}
558
559- (short)acceptNode:(DOMNode *)node
560{
561    return core(self)->acceptNode(core(node));
562}
563
564@end
565