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/*
* Copyright (C) 2016-2017 Apple 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:
* 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 "HTMLSlotElement.h"
#include "ShadowRoot.h"
#include "StyleResolver.h"
#include "StyleScope.h"
#include "StyleScopeRuleSets.h"
namespace WebCore {
namespace Style {
template <typename TraverseFunction>
inline void traverseRuleFeaturesInShadowTree(Element& element, TraverseFunction&& function)
{
if (!element.shadowRoot())
return;
auto& shadowRuleSets = element.shadowRoot()->styleScope().resolver().ruleSets();
auto& authorStyle = shadowRuleSets.authorStyle();
bool hasHostPseudoClassRulesMatchingInShadowTree = authorStyle.hasHostPseudoClassRulesMatchingInShadowTree();
if (authorStyle.hostPseudoClassRules().isEmpty() && !hasHostPseudoClassRulesMatchingInShadowTree)
return;
function(shadowRuleSets.features(), hasHostPseudoClassRulesMatchingInShadowTree);
}
template <typename TraverseFunction>
inline void traverseRuleFeaturesForSlotted(Element& element, TraverseFunction&& function)
{
auto assignedShadowRoots = assignedShadowRootsIfSlotted(element);
for (auto& assignedShadowRoot : assignedShadowRoots) {
auto& ruleSets = assignedShadowRoot->styleScope().resolver().ruleSets();
if (ruleSets.authorStyle().slottedPseudoElementRules().isEmpty())
continue;
function(ruleSets.features(), false);
}
}
template <typename TraverseFunction>
inline void traverseRuleFeatures(Element& element, TraverseFunction&& function)
{
auto& ruleSets = element.styleResolver().ruleSets();
auto mayAffectShadowTree = [&] {
if (element.shadowRoot() && ruleSets.authorStyle().hasShadowPseudoElementRules())
return true;
if (is<HTMLSlotElement>(element) && !ruleSets.authorStyle().slottedPseudoElementRules().isEmpty())
return true;
return false;
};
function(ruleSets.features(), mayAffectShadowTree());
traverseRuleFeaturesInShadowTree(element, function);
traverseRuleFeaturesForSlotted(element, function);
// Ensure that the containing tree resolver also exists so it doesn't get created in the middle of invalidation.
if (element.isInShadowTree())
Style::Scope::forNode(*element.containingShadowRoot()->host()).resolver();
}
}
}