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// Copyright 2016 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "core/css/resolver/SharedStyleFinder.h"
#include "core/css/RuleFeature.h"
#include "core/css/RuleSet.h"
#include "core/css/parser/CSSParser.h"
#include "core/css/parser/CSSParserContext.h"
#include "core/dom/Document.h"
#include "core/dom/shadow/ShadowRoot.h"
#include "core/dom/shadow/ShadowRootInit.h"
#include "core/frame/FrameView.h"
#include "core/html/HTMLElement.h"
#include "core/testing/DummyPageHolder.h"
#include "testing/gtest/include/gtest/gtest.h"
#include <memory>
namespace blink {
class SharedStyleFinderTest : public ::testing::Test {
protected:
SharedStyleFinderTest() = default;
~SharedStyleFinderTest() override = default;
Document& document() { return m_dummyPageHolder->document(); }
void setBodyContent(const String& html) {
document().body()->setInnerHTML(html);
document().view()->updateAllLifecyclePhases();
}
ShadowRoot& attachShadow(Element& host) {
ShadowRootInit init;
init.setMode("open");
ShadowRoot* shadowRoot =
host.attachShadow(ScriptState::forMainWorld(document().frame()), init,
ASSERT_NO_EXCEPTION);
EXPECT_TRUE(shadowRoot);
return *shadowRoot;
}
void addSelector(const String& selector) {
StyleRuleBase* newRule =
CSSParser::parseRule(CSSParserContext::create(HTMLStandardMode),
nullptr, selector + "{color:pink}");
m_ruleSet->addStyleRule(static_cast<StyleRule*>(newRule),
RuleHasNoSpecialState);
}
void finishAddingSelectors() {
m_siblingRuleSet = makeRuleSet(m_ruleSet->features().siblingRules());
m_uncommonAttributeRuleSet =
makeRuleSet(m_ruleSet->features().uncommonAttributeRules());
}
bool matchesUncommonAttributeRuleSet(Element& element) {
return matchesRuleSet(element, m_uncommonAttributeRuleSet);
}
private:
void SetUp() override {
m_dummyPageHolder = DummyPageHolder::create(IntSize(800, 600));
m_ruleSet = RuleSet::create();
}
static RuleSet* makeRuleSet(const HeapVector<RuleFeature>& ruleFeatures) {
if (ruleFeatures.isEmpty())
return nullptr;
RuleSet* ruleSet = RuleSet::create();
for (auto ruleFeature : ruleFeatures)
ruleSet->addRule(ruleFeature.rule, ruleFeature.selectorIndex,
RuleHasNoSpecialState);
return ruleSet;
}
bool matchesRuleSet(Element& element, RuleSet* ruleSet) {
if (!ruleSet)
return false;
ElementResolveContext context(element);
SharedStyleFinder finder(context, m_ruleSet->features(), m_siblingRuleSet,
m_uncommonAttributeRuleSet,
document().ensureStyleResolver());
return finder.matchesRuleSet(ruleSet);
}
std::unique_ptr<DummyPageHolder> m_dummyPageHolder;
Persistent<RuleSet> m_ruleSet;
Persistent<RuleSet> m_siblingRuleSet;
Persistent<RuleSet> m_uncommonAttributeRuleSet;
};
// Selectors which only fail matching :hover/:focus/:active/:-webkit-drag are
// considered as matching for matchesRuleSet because affectedBy bits need to be
// set correctly on ComputedStyle objects, hence ComputedStyle may not be shared
// with elements which would not have reached the pseudo classes during
// matching.
TEST_F(SharedStyleFinderTest, AttributeAffectedByHover) {
setBodyContent("<div id=a attr></div><div id=b></div>");
addSelector("[attr]:hover");
finishAddingSelectors();
Element* a = document().getElementById("a");
Element* b = document().getElementById("b");
ASSERT_TRUE(a);
ASSERT_TRUE(b);
EXPECT_FALSE(a->isHovered());
EXPECT_FALSE(b->isHovered());
EXPECT_TRUE(matchesUncommonAttributeRuleSet(*a));
EXPECT_FALSE(matchesUncommonAttributeRuleSet(*b));
}
TEST_F(SharedStyleFinderTest, AttributeAffectedByHoverNegated) {
setBodyContent("<div id=a attr></div><div id=b></div>");
addSelector("[attr]:not(:hover)");
finishAddingSelectors();
Element* a = document().getElementById("a");
Element* b = document().getElementById("b");
ASSERT_TRUE(a);
ASSERT_TRUE(b);
EXPECT_FALSE(a->isHovered());
EXPECT_FALSE(b->isHovered());
EXPECT_TRUE(matchesUncommonAttributeRuleSet(*a));
EXPECT_FALSE(matchesUncommonAttributeRuleSet(*b));
}
TEST_F(SharedStyleFinderTest, AttributeAffectedByFocus) {
setBodyContent("<div id=a attr></div><div id=b></div>");
addSelector("[attr]:focus");
finishAddingSelectors();
Element* a = document().getElementById("a");
Element* b = document().getElementById("b");
ASSERT_TRUE(a);
ASSERT_TRUE(b);
EXPECT_FALSE(a->isFocused());
EXPECT_FALSE(b->isFocused());
EXPECT_TRUE(matchesUncommonAttributeRuleSet(*a));
EXPECT_FALSE(matchesUncommonAttributeRuleSet(*b));
}
TEST_F(SharedStyleFinderTest, AttributeAffectedByActive) {
setBodyContent("<div id=a attr></div><div id=b></div>");
addSelector("[attr]:active");
finishAddingSelectors();
Element* a = document().getElementById("a");
Element* b = document().getElementById("b");
ASSERT_TRUE(a);
ASSERT_TRUE(b);
EXPECT_FALSE(a->isActive());
EXPECT_FALSE(b->isActive());
EXPECT_TRUE(matchesUncommonAttributeRuleSet(*a));
EXPECT_FALSE(matchesUncommonAttributeRuleSet(*b));
}
TEST_F(SharedStyleFinderTest, AttributeAffectedByDrag) {
setBodyContent("<div id=a attr></div><div id=b></div>");
addSelector("[attr]:-webkit-drag");
finishAddingSelectors();
Element* a = document().getElementById("a");
Element* b = document().getElementById("b");
ASSERT_TRUE(a);
ASSERT_TRUE(b);
EXPECT_FALSE(a->isDragged());
EXPECT_FALSE(b->isDragged());
EXPECT_TRUE(matchesUncommonAttributeRuleSet(*a));
EXPECT_FALSE(matchesUncommonAttributeRuleSet(*b));
}
TEST_F(SharedStyleFinderTest, SlottedPseudoWithAttribute) {
setBodyContent("<div id=host><div id=a></div><div id=b attr></div></div>");
Element* host = document().getElementById("host");
ShadowRoot& root = attachShadow(*host);
root.setInnerHTML("<slot></slot>");
document().updateDistribution();
addSelector("::slotted([attr])");
finishAddingSelectors();
Element* a = document().getElementById("a");
Element* b = document().getElementById("b");
EXPECT_TRUE(a->assignedSlot());
EXPECT_TRUE(b->assignedSlot());
EXPECT_FALSE(matchesUncommonAttributeRuleSet(*a));
EXPECT_TRUE(matchesUncommonAttributeRuleSet(*b));
}
} // namespace blink
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