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/*
* Copyright (C) 2014-2016 Apple Inc. All rights reserved.
* Copyright (C) 2014 Dhi Aurrahman <diorahman@rockybars.com>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. 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.
*
* THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS 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 APPLE INC. OR ITS 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.
*/
#pragma once
#include "FocusController.h"
#include "HTMLInputElement.h"
#include "HTMLOptionElement.h"
#include "RenderScrollbar.h"
#include "ScrollableArea.h"
#include "ScrollbarTheme.h"
#include <wtf/Compiler.h>
#if ENABLE(VIDEO_TRACK)
#include "WebVTTElement.h"
#endif
namespace WebCore {
ALWAYS_INLINE bool isAutofilled(const Element& element)
{
return is<HTMLInputElement>(element) && downcast<HTMLInputElement>(element).isAutoFilled();
}
ALWAYS_INLINE bool isAutofilledStrongPassword(const Element& element)
{
return is<HTMLInputElement>(element) && downcast<HTMLInputElement>(element).isAutoFilled() && downcast<HTMLInputElement>(element).hasAutoFillStrongPasswordButton();
}
ALWAYS_INLINE bool matchesDefaultPseudoClass(const Element& element)
{
return element.matchesDefaultPseudoClass();
}
// https://html.spec.whatwg.org/multipage/scripting.html#selector-disabled
ALWAYS_INLINE bool matchesDisabledPseudoClass(const Element& element)
{
return is<HTMLElement>(element) && downcast<HTMLElement>(element).isActuallyDisabled();
}
// https://html.spec.whatwg.org/multipage/scripting.html#selector-enabled
ALWAYS_INLINE bool matchesEnabledPseudoClass(const Element& element)
{
return is<HTMLElement>(element) && downcast<HTMLElement>(element).canBeActuallyDisabled() && !element.isDisabledFormControl();
}
ALWAYS_INLINE bool isDefinedElement(const Element& element)
{
return !element.isUndefinedCustomElement();
}
ALWAYS_INLINE bool isMediaDocument(const Element& element)
{
return element.document().isMediaDocument();
}
ALWAYS_INLINE bool isChecked(const Element& element)
{
// Even though WinIE allows checked and indeterminate to co-exist, the CSS selector spec says that
// you can't be both checked and indeterminate. We will behave like WinIE behind the scenes and just
// obey the CSS spec here in the test for matching the pseudo.
if (is<HTMLInputElement>(element)) {
auto& inputElement = downcast<HTMLInputElement>(element);
return inputElement.shouldAppearChecked() && !inputElement.shouldAppearIndeterminate();
}
if (is<HTMLOptionElement>(element))
return const_cast<HTMLOptionElement&>(downcast<HTMLOptionElement>(element)).selected();
return false;
}
ALWAYS_INLINE bool isInRange(const Element& element)
{
return element.isInRange();
}
ALWAYS_INLINE bool isOutOfRange(const Element& element)
{
return element.isOutOfRange();
}
ALWAYS_INLINE bool isInvalid(const Element& element)
{
return element.matchesInvalidPseudoClass();
}
ALWAYS_INLINE bool isOptionalFormControl(const Element& element)
{
return element.isOptionalFormControl();
}
ALWAYS_INLINE bool isRequiredFormControl(const Element& element)
{
return element.isRequiredFormControl();
}
ALWAYS_INLINE bool isValid(const Element& element)
{
return element.matchesValidPseudoClass();
}
ALWAYS_INLINE bool isWindowInactive(const Element& element)
{
auto* page = element.document().page();
if (!page)
return false;
return !page->focusController().isActive();
}
ALWAYS_INLINE bool containslanguageSubtagMatchingRange(StringView language, StringView range, unsigned languageLength, unsigned& position)
{
unsigned languageSubtagsStartIndex = position;
unsigned languageSubtagsEndIndex = languageLength;
bool isAsteriskRange = range == "*";
do {
if (languageSubtagsStartIndex > 0)
languageSubtagsStartIndex += 1;
languageSubtagsEndIndex = std::min<unsigned>(language.find('-', languageSubtagsStartIndex), languageLength);
if (languageSubtagsStartIndex > languageSubtagsEndIndex)
return false;
StringView languageSubtag = language.substring(languageSubtagsStartIndex, languageSubtagsEndIndex - languageSubtagsStartIndex);
bool isEqual = equalIgnoringASCIICase(range, languageSubtag);
if (!isAsteriskRange) {
if ((!isEqual && !languageSubtagsStartIndex) || (languageSubtag.length() == 1 && languageSubtagsStartIndex > 0))
return false;
}
languageSubtagsStartIndex = languageSubtagsEndIndex;
if (isEqual || isAsteriskRange) {
position = languageSubtagsStartIndex;
return true;
}
} while (languageSubtagsStartIndex < languageLength);
return false;
}
ALWAYS_INLINE bool matchesLangPseudoClass(const Element& element, const Vector<AtomicString>& argumentList)
{
AtomicString language;
#if ENABLE(VIDEO_TRACK)
if (is<WebVTTElement>(element))
language = downcast<WebVTTElement>(element).language();
else
#endif
language = element.computeInheritedLanguage();
if (language.isEmpty())
return false;
// Implement basic and extended filterings of given language tags
// as specified in www.ietf.org/rfc/rfc4647.txt.
StringView languageStringView = language.string();
unsigned languageLength = language.length();
for (const AtomicString& range : argumentList) {
if (range.isEmpty())
continue;
if (range == "*")
return true;
StringView rangeStringView = range.string();
if (equalIgnoringASCIICase(languageStringView, rangeStringView) && !languageStringView.contains('-'))
return true;
unsigned rangeLength = rangeStringView.length();
unsigned rangeSubtagsStartIndex = 0;
unsigned rangeSubtagsEndIndex = rangeLength;
unsigned lastMatchedLanguageSubtagIndex = 0;
bool matchedRange = true;
do {
if (rangeSubtagsStartIndex > 0)
rangeSubtagsStartIndex += 1;
if (rangeSubtagsStartIndex > languageLength)
return false;
rangeSubtagsEndIndex = std::min<unsigned>(rangeStringView.find('-', rangeSubtagsStartIndex), rangeLength);
StringView rangeSubtag = rangeStringView.substring(rangeSubtagsStartIndex, rangeSubtagsEndIndex - rangeSubtagsStartIndex);
if (!containslanguageSubtagMatchingRange(languageStringView, rangeSubtag, languageLength, lastMatchedLanguageSubtagIndex)) {
matchedRange = false;
break;
}
rangeSubtagsStartIndex = rangeSubtagsEndIndex;
} while (rangeSubtagsStartIndex < rangeLength);
if (matchedRange)
return true;
}
return false;
}
ALWAYS_INLINE bool matchesReadOnlyPseudoClass(const Element& element)
{
return !element.matchesReadWritePseudoClass();
}
ALWAYS_INLINE bool matchesReadWritePseudoClass(const Element& element)
{
return element.matchesReadWritePseudoClass();
}
ALWAYS_INLINE bool matchesIndeterminatePseudoClass(const Element& element)
{
return element.matchesIndeterminatePseudoClass();
}
ALWAYS_INLINE bool scrollbarMatchesEnabledPseudoClass(const SelectorChecker::CheckingContext& context)
{
return context.scrollbar && context.scrollbar->enabled();
}
ALWAYS_INLINE bool scrollbarMatchesDisabledPseudoClass(const SelectorChecker::CheckingContext& context)
{
return context.scrollbar && !context.scrollbar->enabled();
}
ALWAYS_INLINE bool scrollbarMatchesHoverPseudoClass(const SelectorChecker::CheckingContext& context)
{
if (!context.scrollbar)
return false;
ScrollbarPart hoveredPart = context.scrollbar->hoveredPart();
if (context.scrollbarPart == ScrollbarBGPart)
return hoveredPart != NoPart;
if (context.scrollbarPart == TrackBGPart)
return hoveredPart == BackTrackPart || hoveredPart == ForwardTrackPart || hoveredPart == ThumbPart;
return context.scrollbarPart == hoveredPart;
}
ALWAYS_INLINE bool scrollbarMatchesActivePseudoClass(const SelectorChecker::CheckingContext& context)
{
if (!context.scrollbar)
return false;
ScrollbarPart pressedPart = context.scrollbar->pressedPart();
if (context.scrollbarPart == ScrollbarBGPart)
return pressedPart != NoPart;
if (context.scrollbarPart == TrackBGPart)
return pressedPart == BackTrackPart || pressedPart == ForwardTrackPart || pressedPart == ThumbPart;
return context.scrollbarPart == pressedPart;
}
ALWAYS_INLINE bool scrollbarMatchesHorizontalPseudoClass(const SelectorChecker::CheckingContext& context)
{
return context.scrollbar && context.scrollbar->orientation() == HorizontalScrollbar;
}
ALWAYS_INLINE bool scrollbarMatchesVerticalPseudoClass(const SelectorChecker::CheckingContext& context)
{
return context.scrollbar && context.scrollbar->orientation() == VerticalScrollbar;
}
ALWAYS_INLINE bool scrollbarMatchesDecrementPseudoClass(const SelectorChecker::CheckingContext& context)
{
return context.scrollbarPart == BackButtonStartPart || context.scrollbarPart == BackButtonEndPart || context.scrollbarPart == BackTrackPart;
}
ALWAYS_INLINE bool scrollbarMatchesIncrementPseudoClass(const SelectorChecker::CheckingContext& context)
{
return context.scrollbarPart == ForwardButtonStartPart || context.scrollbarPart == ForwardButtonEndPart || context.scrollbarPart == ForwardTrackPart;
}
ALWAYS_INLINE bool scrollbarMatchesStartPseudoClass(const SelectorChecker::CheckingContext& context)
{
return context.scrollbarPart == BackButtonStartPart || context.scrollbarPart == ForwardButtonStartPart || context.scrollbarPart == BackTrackPart;
}
ALWAYS_INLINE bool scrollbarMatchesEndPseudoClass(const SelectorChecker::CheckingContext& context)
{
return context.scrollbarPart == BackButtonEndPart || context.scrollbarPart == ForwardButtonEndPart || context.scrollbarPart == ForwardTrackPart;
}
ALWAYS_INLINE bool scrollbarMatchesDoubleButtonPseudoClass(const SelectorChecker::CheckingContext& context)
{
if (!context.scrollbar)
return false;
ScrollbarButtonsPlacement buttonsPlacement = context.scrollbar->theme().buttonsPlacement();
if (context.scrollbarPart == BackButtonStartPart || context.scrollbarPart == ForwardButtonStartPart || context.scrollbarPart == BackTrackPart)
return buttonsPlacement == ScrollbarButtonsDoubleStart || buttonsPlacement == ScrollbarButtonsDoubleBoth;
if (context.scrollbarPart == BackButtonEndPart || context.scrollbarPart == ForwardButtonEndPart || context.scrollbarPart == ForwardTrackPart)
return buttonsPlacement == ScrollbarButtonsDoubleEnd || buttonsPlacement == ScrollbarButtonsDoubleBoth;
return false;
}
ALWAYS_INLINE bool scrollbarMatchesSingleButtonPseudoClass(const SelectorChecker::CheckingContext& context)
{
if (!context.scrollbar)
return false;
ScrollbarButtonsPlacement buttonsPlacement = context.scrollbar->theme().buttonsPlacement();
if (context.scrollbarPart == BackButtonStartPart || context.scrollbarPart == ForwardButtonEndPart || context.scrollbarPart == BackTrackPart || context.scrollbarPart == ForwardTrackPart)
return buttonsPlacement == ScrollbarButtonsSingle;
return false;
}
ALWAYS_INLINE bool scrollbarMatchesNoButtonPseudoClass(const SelectorChecker::CheckingContext& context)
{
if (!context.scrollbar)
return false;
ScrollbarButtonsPlacement buttonsPlacement = context.scrollbar->theme().buttonsPlacement();
if (context.scrollbarPart == BackTrackPart)
return buttonsPlacement == ScrollbarButtonsNone || buttonsPlacement == ScrollbarButtonsDoubleEnd;
if (context.scrollbarPart == ForwardTrackPart)
return buttonsPlacement == ScrollbarButtonsNone || buttonsPlacement == ScrollbarButtonsDoubleStart;
return false;
}
ALWAYS_INLINE bool scrollbarMatchesCornerPresentPseudoClass(const SelectorChecker::CheckingContext& context)
{
return context.scrollbar && context.scrollbar->scrollableArea().isScrollCornerVisible();
}
#if ENABLE(FULLSCREEN_API)
ALWAYS_INLINE bool matchesFullScreenPseudoClass(const Element& element)
{
// While a Document is in the fullscreen state, and the document's current fullscreen
// element is an element in the document, the 'full-screen' pseudoclass applies to
// that element. Also, an <iframe>, <object> or <embed> element whose child browsing
// context's Document is in the fullscreen state has the 'full-screen' pseudoclass applied.
if (element.isFrameElementBase() && element.containsFullScreenElement())
return true;
if (!element.document().webkitIsFullScreen())
return false;
return &element == element.document().webkitCurrentFullScreenElement();
}
ALWAYS_INLINE bool matchesFullScreenAnimatingFullScreenTransitionPseudoClass(const Element& element)
{
if (&element != element.document().webkitCurrentFullScreenElement())
return false;
return element.document().isAnimatingFullScreen();
}
ALWAYS_INLINE bool matchesFullScreenAncestorPseudoClass(const Element& element)
{
return element.containsFullScreenElement();
}
ALWAYS_INLINE bool matchesFullScreenDocumentPseudoClass(const Element& element)
{
// While a Document is in the fullscreen state, the 'full-screen-document' pseudoclass applies
// to all elements of that Document.
if (!element.document().webkitIsFullScreen())
return false;
return true;
}
#endif
#if ENABLE(VIDEO_TRACK)
ALWAYS_INLINE bool matchesFutureCuePseudoClass(const Element& element)
{
return is<WebVTTElement>(element) && !downcast<WebVTTElement>(element).isPastNode();
}
ALWAYS_INLINE bool matchesPastCuePseudoClass(const Element& element)
{
return is<WebVTTElement>(element) && downcast<WebVTTElement>(element).isPastNode();
}
#endif
} // namespace WebCore