Remove SVGCursorElement

third_party/WebKit/Source/core/css/CSSCursorImageValue.cpp

 /*
  * Copyright (C) 2006 Rob Buis <buis@kde.org>
  *           (C) 2008 Nikolas Zimmermann <zimmermann@kde.org>
  * Copyright (C) 2008 Apple Inc. All rights reserved.
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
  * License as published by the Free Software Foundation; either
  * version 2 of the License, or (at your option) any later version.
  *
  * This library is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  * Library General Public License for more details.
  *
  * You should have received a copy of the GNU Library General Public License
  * along with this library; see the file COPYING.LIB.  If not, write to
  * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
  * Boston, MA 02110-1301, USA.
  */
 
 #include "core/css/CSSCursorImageValue.h"
 
-#include "core/SVGNames.h"
-#include "core/css/CSSImageSetValue.h"
-#include "core/fetch/ImageResourceContent.h"
-#include "core/style/StyleFetchedImage.h"
-#include "core/style/StyleFetchedImageSet.h"
-#include "core/style/StyleImage.h"
-#include "core/svg/SVGCursorElement.h"
-#include "core/svg/SVGLengthContext.h"
-#include "core/svg/SVGURIReference.h"
-#include "wtf/MathExtras.h"
 #include "wtf/text/StringBuilder.h"
 #include "wtf/text/WTFString.h"
 
 namespace blink {
 
-static inline SVGCursorElement* resourceReferencedByCursorElement(
-    const String& url,
-    const TreeScope& treeScope) {
-  Element* element =
-      SVGURIReference::targetElementFromIRIString(url, treeScope);
-  return isSVGCursorElement(element) ? toSVGCursorElement(element) : nullptr;
-}
-
-CSSCursorImageValue::CSSCursorImageValue(CSSValue* imageValue,
+CSSCursorImageValue::CSSCursorImageValue(const CSSValue& imageValue,
                                          bool hotSpotSpecified,
                                          const IntPoint& hotSpot)
     : CSSValue(CursorImageClass),
-      m_imageValue(imageValue),
-      m_hotSpotSpecified(hotSpotSpecified),
+      m_imageValue(&imageValue),
       m_hotSpot(hotSpot),
-      m_isCachePending(true) {}
+      m_hotSpotSpecified(hotSpotSpecified) {
+  DCHECK(imageValue.isImageValue() || imageValue.isImageSetValue());
+}
 
 CSSCursorImageValue::~CSSCursorImageValue() {}
 
 String CSSCursorImageValue::customCSSText() const {
   StringBuilder result;
   result.append(m_imageValue->cssText());
   if (m_hotSpotSpecified) {
     result.append(' ');
     result.appendNumber(m_hotSpot.x());
     result.append(' ');
     result.appendNumber(m_hotSpot.y());
   }
   return result.toString();
 }
 
-SVGCursorElement* CSSCursorImageValue::getSVGCursorElement(
-    Element* element) const {
-  if (!element || !element->isSVGElement())
-    return nullptr;
-
-  if (!hasFragmentInURL())
-    return nullptr;
-
-  String url = toCSSImageValue(m_imageValue.get())->url();
-  return resourceReferencedByCursorElement(url, element->treeScope());
-}
-
-bool CSSCursorImageValue::isCachePending(float deviceScaleFactor) const {
-  // Need to delegate completely so that changes in device scale factor can be
-  // handled appropriately.
-  if (m_imageValue->isImageSetValue())
-    return toCSSImageSetValue(*m_imageValue).isCachePending(deviceScaleFactor);
-  return m_isCachePending;
-}
-
-StyleImage* CSSCursorImageValue::cachedImage(float deviceScaleFactor) const {
-  ASSERT(!isCachePending(deviceScaleFactor));
-
-  if (m_imageValue->isImageSetValue())
-    return toCSSImageSetValue(*m_imageValue).cachedImage(deviceScaleFactor);
-  return m_cachedImage.get();
-}
-
-StyleImage* CSSCursorImageValue::cacheImage(const Document& document,
-                                            float deviceScaleFactor) {
-  if (m_imageValue->isImageSetValue())
-    return toCSSImageSetValue(*m_imageValue)
-        .cacheImage(document, deviceScaleFactor);
-
-  if (m_isCachePending) {
-    m_isCachePending = false;
-
-    // For SVG images we need to lazily substitute in the correct URL. Rather
-    // than attempt to change the URL of the CSSImageValue (which would then
-    // change behavior like cssText), we create an alternate CSSImageValue to
-    // use.
-    if (hasFragmentInURL()) {
-      CSSImageValue* imageValue = toCSSImageValue(m_imageValue.get());
-      // FIXME: This will fail if the <cursor> element is in a shadow DOM
-      // (http://crbug/59827)
-      if (SVGCursorElement* cursorElement =
-              resourceReferencedByCursorElement(imageValue->url(), document)) {
-        CSSImageValue* svgImageValue =
-            CSSImageValue::create(document.completeURL(
-                cursorElement->href()->currentValue()->value()));
-        svgImageValue->setReferrer(imageValue->referrer());
-        m_cachedImage = svgImageValue->cacheImage(document);
-        return m_cachedImage.get();
-      }
-    }
-
-    if (m_imageValue->isImageValue())
-      m_cachedImage = toCSSImageValue(*m_imageValue).cacheImage(document);
-  }
-
-  if (m_cachedImage && m_cachedImage->isImageResource())
-    return toStyleFetchedImage(m_cachedImage);
-  return nullptr;
-}
-
-bool CSSCursorImageValue::hasFragmentInURL() const {
-  if (m_imageValue->isImageValue()) {
-    CSSImageValue* imageValue = toCSSImageValue(m_imageValue.get());
-    KURL kurl(ParsedURLString, imageValue->url());
-    return kurl.hasFragmentIdentifier();
-  }
-  return false;
-}
-
-String CSSCursorImageValue::cachedImageURL() const {
-  if (!m_cachedImage || !m_cachedImage->isImageResource())
-    return String();
-  return toStyleFetchedImage(m_cachedImage)->cachedImage()->url().getString();
-}
-
-void CSSCursorImageValue::clearImageResource() const {
-  m_cachedImage = nullptr;
-  m_isCachePending = true;
-}
-
 bool CSSCursorImageValue::equals(const CSSCursorImageValue& other) const {
   return (m_hotSpotSpecified
               ? other.m_hotSpotSpecified && m_hotSpot == other.m_hotSpot
               : !other.m_hotSpotSpecified) &&
          compareCSSValuePtr(m_imageValue, other.m_imageValue);
 }
 
 DEFINE_TRACE_AFTER_DISPATCH(CSSCursorImageValue) {
   visitor->trace(m_imageValue);
-  visitor->trace(m_cachedImage);
   CSSValue::traceAfterDispatch(visitor);
 }
 
 }  // namespace blink