Diff
Modified: trunk/Source/WebCore/CMakeLists.txt (110054 => 110055)
--- trunk/Source/WebCore/CMakeLists.txt 2012-03-07 15:46:58 UTC (rev 110054)
+++ trunk/Source/WebCore/CMakeLists.txt 2012-03-07 16:29:37 UTC (rev 110055)
@@ -829,6 +829,7 @@
html/ImageDocument.cpp
html/ImageInputType.cpp
html/InputType.cpp
+ html/LabelableElement.cpp
html/LabelsNodeList.cpp
html/LinkRelAttribute.cpp
html/MediaController.cpp
Modified: trunk/Source/WebCore/ChangeLog (110054 => 110055)
--- trunk/Source/WebCore/ChangeLog 2012-03-07 15:46:58 UTC (rev 110054)
+++ trunk/Source/WebCore/ChangeLog 2012-03-07 16:29:37 UTC (rev 110055)
@@ -1,3 +1,55 @@
+2012-03-07 Yoshifumi Inoue <[email protected]>
+
+ [Forms] Introduce LabelableElement to share "labels" attribute implementation
+ https://bugs.webkit.org/show_bug.cgi?id=80392
+
+ Reviewed by Kent Tamura.
+
+ This patch introduces new class LabelableElement as base class of
+ HTMLFormControlElement for sharing implementation of "labels"
+ attribute among form-associate elements, "meter" element, and
+ "progress" element.
+
+ This patch allows us to change base class of HTMLMeterElement and
+ HTMLProgressElement dervied from HTMLFormControlElement to
+ HTMLElement for remove them from HTMLFormElement::m_associatedFormElements
+ where we don't need to put "meter" and "progress" elements(bug 80381.)
+
+ This patch also changes implementation of isLabelable using virtual
+ method rather than sequence of hasTagName for execution speed and
+ better readability.
+
+ No new tests are required. No behavior changes.
+
+ * CMakeLists.txt: Add LabelableElement.cpp and .h
+ * GNUmakefile.list.am: Add LabelableElement.cpp and .h
+ * Target.pri: Add LabelableElement.cpp and .h
+ * WebCore.gypi: Add LabelableElement.cpp and .h
+ * WebCore.vcproj/WebCore.vcproj: Add LabelableElement.cpp and .h
+ * WebCore.xcodeproj/project.pbxproj: Add LabelableElement.cpp and .h
+ * html/HTMLButtonElement.h: Implement isLabelable.
+ * html/HTMLFormControlElement.cpp:
+ (WebCore::HTMLFormControlElement::HTMLFormControlElement): Change direct base class.
+ * html/HTMLFormControlElement.h:
+ (HTMLFormControlElement): Change direct base class.
+ * html/HTMLInputElement.cpp:
+ (WebCore::HTMLInputElement::isLabelable): Removed to use virtual method instead of hasTagName.
+ (WebCore):
+ * html/HTMLInputElement.h: Declaration of isLabelable.
+ * html/HTMLKeygenElement.h: Implement isLabelable.
+ * html/HTMLMeterElement.h: Implement isLabelable.
+ * html/HTMLProgressElement.h: Implement isLabelable.
+ * html/HTMLSelectElement.h: Implement isLabelable.
+ * html/HTMLTextAreaElement.h: Implement isLabelable.
+ * html/LabelableElement.cpp: Added.
+ (WebCore):
+ (WebCore::LabelableElement::LabelableElement):
+ (WebCore::LabelableElement::~LabelableElement):
+ (WebCore::LabelableElement::labels): Moved from HTMLFormControlElement.
+ * html/LabelableElement.h: Added.
+ (WebCore):
+ (LabelableElement):
+
2012-03-07 Arun Patole <[email protected]>
HTMLTrackElement.idl doesn't have default attribute.
Modified: trunk/Source/WebCore/GNUmakefile.list.am (110054 => 110055)
--- trunk/Source/WebCore/GNUmakefile.list.am 2012-03-07 15:46:58 UTC (rev 110054)
+++ trunk/Source/WebCore/GNUmakefile.list.am 2012-03-07 16:29:37 UTC (rev 110055)
@@ -2377,6 +2377,8 @@
Source/WebCore/html/ImageInputType.h \
Source/WebCore/html/InputType.cpp \
Source/WebCore/html/InputType.h \
+ Source/WebCore/html/LabelableElement.cpp \
+ Source/WebCore/html/LabelableElement.h \
Source/WebCore/html/LabelsNodeList.cpp \
Source/WebCore/html/LabelsNodeList.h \
Source/WebCore/html/LinkRelAttribute.cpp \
Modified: trunk/Source/WebCore/Target.pri (110054 => 110055)
--- trunk/Source/WebCore/Target.pri 2012-03-07 15:46:58 UTC (rev 110054)
+++ trunk/Source/WebCore/Target.pri 2012-03-07 16:29:37 UTC (rev 110055)
@@ -811,6 +811,7 @@
html/ImageDocument.cpp \
html/ImageInputType.cpp \
html/InputType.cpp \
+ html/LabelableElement.cpp \
html/LabelsNodeList.cpp \
html/LinkRelAttribute.cpp \
html/MediaDocument.cpp \
@@ -1925,6 +1926,7 @@
html/HTMLViewSourceDocument.h \
html/ImageData.h \
html/ImageDocument.h \
+ html/LabelableElement.h \
html/LabelsNodeList.h \
html/LinkRelAttribute.h \
html/MediaController.h \
Modified: trunk/Source/WebCore/WebCore.gypi (110054 => 110055)
--- trunk/Source/WebCore/WebCore.gypi 2012-03-07 15:46:58 UTC (rev 110054)
+++ trunk/Source/WebCore/WebCore.gypi 2012-03-07 16:29:37 UTC (rev 110055)
@@ -656,6 +656,7 @@
'html/HTMLTextAreaElement.h',
'html/HTMLTextFormControlElement.h',
'html/InputType.h',
+ 'html/LabelableElement.h',
'html/VoidCallback.h',
'html/parser/HTMLParserIdioms.h',
],
@@ -5429,6 +5430,7 @@
'html/ImageInputType.cpp',
'html/ImageInputType.h',
'html/InputType.cpp',
+ 'html/LabelableElement.cpp',
'html/LabelsNodeList.cpp',
'html/LabelsNodeList.h',
'html/LinkRelAttribute.cpp',
Modified: trunk/Source/WebCore/WebCore.vcproj/WebCore.vcproj (110054 => 110055)
--- trunk/Source/WebCore/WebCore.vcproj/WebCore.vcproj 2012-03-07 15:46:58 UTC (rev 110054)
+++ trunk/Source/WebCore/WebCore.vcproj/WebCore.vcproj 2012-03-07 16:29:37 UTC (rev 110055)
@@ -61414,6 +61414,14 @@
>
</File>
<File
+ RelativePath="..\html\LabelableElement.cpp"
+ >
+ </File>
+ <File
+ RelativePath="..\html\LabelableElement.h"
+ >
+ </File>
+ <File
RelativePath="..\html\LabelsNodeList.cpp"
>
</File>
Modified: trunk/Source/WebCore/WebCore.xcodeproj/project.pbxproj (110054 => 110055)
--- trunk/Source/WebCore/WebCore.xcodeproj/project.pbxproj 2012-03-07 15:46:58 UTC (rev 110054)
+++ trunk/Source/WebCore/WebCore.xcodeproj/project.pbxproj 2012-03-07 16:29:37 UTC (rev 110055)
@@ -1168,6 +1168,8 @@
44A28AAC12DFB8AC00AE923B /* MathMLElementFactory.h in Headers */ = {isa = PBXBuildFile; fileRef = 44A28AAB12DFB8AC00AE923B /* MathMLElementFactory.h */; };
44A28AAF12DFB8BF00AE923B /* MathMLNames.h in Headers */ = {isa = PBXBuildFile; fileRef = 44A28AAE12DFB8BF00AE923B /* MathMLNames.h */; };
45099C411370A7800058D513 /* IconURL.cpp in Sources */ = {isa = PBXBuildFile; fileRef = 45099C401370A7800058D513 /* IconURL.cpp */; };
+ 450CEBF015073BBE002BB149 /* LabelableElement.cpp in Sources */ = {isa = PBXBuildFile; fileRef = 450CEBEE15073BBE002BB149 /* LabelableElement.cpp */; };
+ 450CEBF115073BBE002BB149 /* LabelableElement.h in Headers */ = {isa = PBXBuildFile; fileRef = 450CEBEF15073BBE002BB149 /* LabelableElement.h */; settings = {ATTRIBUTES = (Private, ); }; };
45BAC2B01360BBAB005DA258 /* IconURL.h in Headers */ = {isa = PBXBuildFile; fileRef = 45BAC2AF1360BBAB005DA258 /* IconURL.h */; settings = {ATTRIBUTES = (Private, ); }; };
4614A1FE0B23A8D600446E1C /* copyCursor.png in Resources */ = {isa = PBXBuildFile; fileRef = 4614A1FD0B23A8D600446E1C /* copyCursor.png */; };
46700ED0127B96CB00F5D5D6 /* FileWriterSync.cpp in Sources */ = {isa = PBXBuildFile; fileRef = 46700ECE127B96CB00F5D5D6 /* FileWriterSync.cpp */; };
@@ -8054,6 +8056,8 @@
44D8DA98139545BE00337B75 /* SVGMPathElement.idl */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = text; path = SVGMPathElement.idl; sourceTree = "<group>"; };
44D8DA9A139545CD00337B75 /* SVGAnimateMotionElement.idl */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = text; path = SVGAnimateMotionElement.idl; sourceTree = "<group>"; };
45099C401370A7800058D513 /* IconURL.cpp */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.cpp; path = IconURL.cpp; sourceTree = "<group>"; };
+ 450CEBEE15073BBE002BB149 /* LabelableElement.cpp */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.cpp; path = LabelableElement.cpp; sourceTree = "<group>"; };
+ 450CEBEF15073BBE002BB149 /* LabelableElement.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = LabelableElement.h; sourceTree = "<group>"; };
45BAC2AF1360BBAB005DA258 /* IconURL.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = IconURL.h; sourceTree = "<group>"; };
4614A1FD0B23A8D600446E1C /* copyCursor.png */ = {isa = PBXFileReference; lastKnownFileType = image.png; path = copyCursor.png; sourceTree = "<group>"; };
46700ECE127B96CB00F5D5D6 /* FileWriterSync.cpp */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.cpp; name = FileWriterSync.cpp; path = fileapi/FileWriterSync.cpp; sourceTree = "<group>"; };
@@ -16959,6 +16963,8 @@
F55B3D8E1251F12D003EF269 /* ImageInputType.h */,
37E3524A12450C5200BAF5D9 /* InputType.cpp */,
37E3524C12450C6600BAF5D9 /* InputType.h */,
+ 450CEBEE15073BBE002BB149 /* LabelableElement.cpp */,
+ 450CEBEF15073BBE002BB149 /* LabelableElement.h */,
A456FA2411AD4A830020B420 /* LabelsNodeList.cpp */,
A456FA2511AD4A830020B420 /* LabelsNodeList.h */,
985BB96B13A94058007A0B69 /* LinkRelAttribute.cpp */,
@@ -24539,6 +24545,7 @@
E1BE512E0CF6C512002EA959 /* XSLTUnicodeSort.h in Headers */,
977E2E0F12F0FC9C00C13379 /* XSSAuditor.h in Headers */,
FD537353137B651800008DCE /* ZeroPole.h in Headers */,
+ 450CEBF115073BBE002BB149 /* LabelableElement.h in Headers */,
);
runOnlyForDeploymentPostprocessing = 0;
};
@@ -27512,6 +27519,7 @@
E1BE512D0CF6C512002EA959 /* XSLTUnicodeSort.cpp in Sources */,
977E2E0E12F0FC9C00C13379 /* XSSAuditor.cpp in Sources */,
FD537352137B651800008DCE /* ZeroPole.cpp in Sources */,
+ 450CEBF015073BBE002BB149 /* LabelableElement.cpp in Sources */,
);
runOnlyForDeploymentPostprocessing = 0;
};
Modified: trunk/Source/WebCore/html/HTMLButtonElement.h (110054 => 110055)
--- trunk/Source/WebCore/html/HTMLButtonElement.h 2012-03-07 15:46:58 UTC (rev 110054)
+++ trunk/Source/WebCore/html/HTMLButtonElement.h 2012-03-07 16:29:37 UTC (rev 110055)
@@ -49,6 +49,7 @@
virtual bool appendFormData(FormDataList&, bool);
virtual bool isEnumeratable() const { return true; }
+ virtual bool isLabelable() const OVERRIDE { return true; }
virtual bool isSuccessfulSubmitButton() const;
virtual bool isActivatedSubmit() const;
Modified: trunk/Source/WebCore/html/HTMLFormControlElement.cpp (110054 => 110055)
--- trunk/Source/WebCore/html/HTMLFormControlElement.cpp 2012-03-07 15:46:58 UTC (rev 110054)
+++ trunk/Source/WebCore/html/HTMLFormControlElement.cpp 2012-03-07 16:29:37 UTC (rev 110055)
@@ -26,16 +26,12 @@
#include "HTMLFormControlElement.h"
#include "Attribute.h"
-#include "Document.h"
-#include "ElementRareData.h"
#include "Event.h"
#include "EventHandler.h"
#include "EventNames.h"
#include "Frame.h"
#include "HTMLFormElement.h"
#include "HTMLInputElement.h"
-#include "HTMLNames.h"
-#include "LabelsNodeList.h"
#include "RenderBox.h"
#include "RenderTheme.h"
#include "ScriptEventListener.h"
@@ -49,7 +45,7 @@
using namespace std;
HTMLFormControlElement::HTMLFormControlElement(const QualifiedName& tagName, Document* document, HTMLFormElement* form)
- : HTMLElement(tagName, document)
+ : LabelableElement(tagName, document)
, m_disabled(false)
, m_readOnly(false)
, m_required(false)
@@ -467,33 +463,4 @@
return isSuccessfulSubmitButton() && form() && form()->defaultButton() == this;
}
-bool HTMLFormControlElement::isLabelable() const
-{
- // FIXME: Add meterTag and outputTag to the list once we support them.
- return hasTagName(buttonTag) || hasTagName(inputTag) || hasTagName(keygenTag)
-#if ENABLE(METER_TAG)
- || hasTagName(meterTag)
-#endif
-#if ENABLE(PROGRESS_TAG)
- || hasTagName(progressTag)
-#endif
- || hasTagName(selectTag) || hasTagName(textareaTag);
-}
-
-PassRefPtr<NodeList> HTMLFormControlElement::labels()
-{
- if (!isLabelable())
- return 0;
- if (!document())
- return 0;
-
- NodeListsNodeData* nodeLists = Node::ensureRareData()->ensureNodeLists(this);
- if (nodeLists->m_labelsNodeListCache)
- return nodeLists->m_labelsNodeListCache;
-
- RefPtr<LabelsNodeList> list = LabelsNodeList::create(this);
- nodeLists->m_labelsNodeListCache = list.get();
- return list.release();
-}
-
} // namespace Webcore
Modified: trunk/Source/WebCore/html/HTMLFormControlElement.h (110054 => 110055)
--- trunk/Source/WebCore/html/HTMLFormControlElement.h 2012-03-07 15:46:58 UTC (rev 110054)
+++ trunk/Source/WebCore/html/HTMLFormControlElement.h 2012-03-07 16:29:37 UTC (rev 110055)
@@ -25,7 +25,7 @@
#define HTMLFormControlElement_h
#include "FormAssociatedElement.h"
-#include "HTMLElement.h"
+#include "LabelableElement.h"
namespace WebCore {
@@ -37,7 +37,7 @@
// HTMLFormControlElement is the default implementation of FormAssociatedElement,
// and form-associated element implementations should use HTMLFormControlElement
// unless there is a special reason.
-class HTMLFormControlElement : public HTMLElement, public FormAssociatedElement {
+class HTMLFormControlElement : public LabelableElement, public FormAssociatedElement {
public:
virtual ~HTMLFormControlElement();
@@ -100,9 +100,6 @@
void setNeedsValidityCheck();
void setCustomValidity(const String&);
- bool isLabelable() const;
- PassRefPtr<NodeList> labels();
-
bool readOnly() const { return m_readOnly; }
bool hasAutofocused() { return m_hasAutofocused; }
Modified: trunk/Source/WebCore/html/HTMLInputElement.cpp (110054 => 110055)
--- trunk/Source/WebCore/html/HTMLInputElement.cpp 2012-03-07 15:46:58 UTC (rev 110054)
+++ trunk/Source/WebCore/html/HTMLInputElement.cpp 2012-03-07 16:29:37 UTC (rev 110055)
@@ -1760,6 +1760,12 @@
return m_inputType->isEnumeratable();
}
+bool HTMLInputElement::isLabelable() const
+{
+ // FIXME: We should return false for type="hidden".
+ return true;
+}
+
bool HTMLInputElement::shouldAppearChecked() const
{
return checked() && m_inputType->isCheckable();
Modified: trunk/Source/WebCore/html/HTMLInputElement.h (110054 => 110055)
--- trunk/Source/WebCore/html/HTMLInputElement.h 2012-03-07 15:46:58 UTC (rev 110054)
+++ trunk/Source/WebCore/html/HTMLInputElement.h 2012-03-07 16:29:37 UTC (rev 110055)
@@ -256,6 +256,7 @@
virtual bool isKeyboardFocusable(KeyboardEvent*) const;
virtual bool isMouseFocusable() const;
virtual bool isEnumeratable() const;
+ virtual bool isLabelable() const OVERRIDE;
virtual void updateFocusAppearance(bool restorePreviousSelection);
virtual void aboutToUnload();
virtual bool shouldUseInputMethod();
Modified: trunk/Source/WebCore/html/HTMLKeygenElement.h (110054 => 110055)
--- trunk/Source/WebCore/html/HTMLKeygenElement.h 2012-03-07 15:46:58 UTC (rev 110054)
+++ trunk/Source/WebCore/html/HTMLKeygenElement.h 2012-03-07 16:29:37 UTC (rev 110055)
@@ -48,6 +48,7 @@
virtual bool isOptionalFormControl() const { return false; }
virtual bool isEnumeratable() const { return true; }
+ virtual bool isLabelable() const OVERRIDE { return true; }
virtual void reset();
Modified: trunk/Source/WebCore/html/HTMLMeterElement.h (110054 => 110055)
--- trunk/Source/WebCore/html/HTMLMeterElement.h 2012-03-07 15:46:58 UTC (rev 110054)
+++ trunk/Source/WebCore/html/HTMLMeterElement.h 2012-03-07 16:29:37 UTC (rev 110055)
@@ -65,6 +65,8 @@
HTMLMeterElement(const QualifiedName&, Document*, HTMLFormElement*);
virtual ~HTMLMeterElement();
+ virtual bool isLabelable() const OVERRIDE { return true; }
+
virtual bool supportsFocus() const;
virtual bool recalcWillValidate() const { return false; }
Modified: trunk/Source/WebCore/html/HTMLProgressElement.h (110054 => 110055)
--- trunk/Source/WebCore/html/HTMLProgressElement.h 2012-03-07 15:46:58 UTC (rev 110054)
+++ trunk/Source/WebCore/html/HTMLProgressElement.h 2012-03-07 16:29:37 UTC (rev 110055)
@@ -51,6 +51,8 @@
HTMLProgressElement(const QualifiedName&, Document*, HTMLFormElement*);
virtual ~HTMLProgressElement();
+ virtual bool isLabelable() const OVERRIDE { return true; }
+
virtual bool supportsFocus() const;
virtual bool recalcWillValidate() const { return false; }
Modified: trunk/Source/WebCore/html/HTMLSelectElement.h (110054 => 110055)
--- trunk/Source/WebCore/html/HTMLSelectElement.h 2012-03-07 15:46:58 UTC (rev 110054)
+++ trunk/Source/WebCore/html/HTMLSelectElement.h 2012-03-07 16:29:37 UTC (rev 110055)
@@ -117,6 +117,7 @@
virtual bool canStartSelection() const { return false; }
virtual bool isEnumeratable() const { return true; }
+ virtual bool isLabelable() const OVERRIDE { return true; }
virtual bool saveFormControlState(String& value) const;
virtual void restoreFormControlState(const String&);
Modified: trunk/Source/WebCore/html/HTMLTextAreaElement.h (110054 => 110055)
--- trunk/Source/WebCore/html/HTMLTextAreaElement.h 2012-03-07 15:46:58 UTC (rev 110054)
+++ trunk/Source/WebCore/html/HTMLTextAreaElement.h 2012-03-07 16:29:37 UTC (rev 110055)
@@ -84,6 +84,7 @@
virtual void subtreeHasChanged();
virtual bool isEnumeratable() const { return true; }
+ virtual bool isLabelable() const OVERRIDE { return true; }
virtual const AtomicString& formControlType() const;
Added: trunk/Source/WebCore/html/LabelableElement.cpp (0 => 110055)
--- trunk/Source/WebCore/html/LabelableElement.cpp (rev 0)
+++ trunk/Source/WebCore/html/LabelableElement.cpp 2012-03-07 16:29:37 UTC (rev 110055)
@@ -0,0 +1,59 @@
+/*
+ * Copyright (C) 1999 Lars Knoll ([email protected])
+ * (C) 1999 Antti Koivisto ([email protected])
+ * (C) 2001 Dirk Mueller ([email protected])
+ * Copyright (C) 2004, 2005, 2006, 2007 Apple Inc. All rights reserved.
+ * (C) 2006 Alexey Proskuryakov ([email protected])
+ *
+ * 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 "config.h"
+#include "LabelableElement.h"
+
+#include "ElementRareData.h"
+#include "LabelsNodeList.h"
+#include "RenderStyle.h"
+
+namespace WebCore {
+
+LabelableElement::LabelableElement(const QualifiedName& tagName, Document* document)
+ : HTMLElement(tagName, document)
+{
+}
+
+LabelableElement::~LabelableElement()
+{
+}
+
+PassRefPtr<NodeList> LabelableElement::labels()
+{
+ if (!isLabelable())
+ return 0;
+ if (!document())
+ return 0;
+
+ NodeListsNodeData* nodeLists = Node::ensureRareData()->ensureNodeLists(this);
+ if (nodeLists->m_labelsNodeListCache)
+ return nodeLists->m_labelsNodeListCache;
+
+ RefPtr<LabelsNodeList> list = LabelsNodeList::create(this);
+ nodeLists->m_labelsNodeListCache = list.get();
+ return list.release();
+}
+
+} // namespace Webcore
Added: trunk/Source/WebCore/html/LabelableElement.h (0 => 110055)
--- trunk/Source/WebCore/html/LabelableElement.h (rev 0)
+++ trunk/Source/WebCore/html/LabelableElement.h 2012-03-07 16:29:37 UTC (rev 110055)
@@ -0,0 +1,52 @@
+/*
+ * Copyright (C) 2012 Google Inc. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *
+ * * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * * Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following disclaimer
+ * in the documentation and/or other materials provided with the
+ * distribution.
+ * * Neither the name of Google Inc. nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef LabelableElement_h
+#define LabelableElement_h
+
+#include "HTMLElement.h"
+
+namespace WebCore {
+
+// LabelableElement represents "labelable element" defined in the HTML
+// specification, and provides the implementation of the "labels" attribute.
+class LabelableElement : public HTMLElement {
+public:
+ virtual ~LabelableElement();
+ virtual bool isLabelable() const { return false; }
+ PassRefPtr<NodeList> labels();
+
+protected:
+ LabelableElement(const QualifiedName& tagName, Document*);
+};
+
+} // namespace WebCore
+
+#endif
