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// Copyright 2017 PDFium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
// Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
#include "core/fxcrt/css/cfx_cssstylesheet.h"
#include <memory>
#include <vector>
#include "core/fxcrt/css/cfx_cssdeclaration.h"
#include "core/fxcrt/css/cfx_cssenumvalue.h"
#include "core/fxcrt/css/cfx_cssnumbervalue.h"
#include "core/fxcrt/css/cfx_cssstylerule.h"
#include "core/fxcrt/css/cfx_cssvaluelist.h"
#include "testing/gtest/include/gtest/gtest.h"
#include "third_party/base/ptr_util.h"
#include "third_party/base/stl_util.h"
class CFX_CSSStyleSheetTest : public testing::Test {
public:
void SetUp() override {
sheet_ = pdfium::MakeUnique<CFX_CSSStyleSheet>();
decl_ = nullptr;
}
void TearDown() override { decl_ = nullptr; }
void LoadAndVerifyDecl(const wchar_t* buf,
const std::vector<WideString>& selectors,
size_t decl_count) {
ASSERT(sheet_);
EXPECT_TRUE(sheet_->LoadBuffer(buf, wcslen(buf)));
EXPECT_EQ(sheet_->CountRules(), 1);
CFX_CSSStyleRule* style = sheet_->GetRule(0);
EXPECT_EQ(selectors.size(), style->CountSelectorLists());
for (size_t i = 0; i < selectors.size(); i++) {
uint32_t hash = FX_HashCode_GetW(selectors[i].AsStringView(), true);
EXPECT_EQ(hash, style->GetSelectorList(i)->GetNameHash());
}
decl_ = style->GetDeclaration();
EXPECT_EQ(decl_->PropertyCountForTesting(), decl_count);
}
void VerifyFloat(CFX_CSSProperty prop, float val, CFX_CSSNumberType type) {
ASSERT(decl_);
bool important;
RetainPtr<CFX_CSSValue> v = decl_->GetProperty(prop, &important);
EXPECT_EQ(v->GetType(), CFX_CSSPrimitiveType::Number);
EXPECT_EQ(v.As<CFX_CSSNumberValue>()->Kind(), type);
EXPECT_EQ(v.As<CFX_CSSNumberValue>()->Value(), val);
}
void VerifyEnum(CFX_CSSProperty prop, CFX_CSSPropertyValue val) {
ASSERT(decl_);
bool important;
RetainPtr<CFX_CSSValue> v = decl_->GetProperty(prop, &important);
EXPECT_EQ(v->GetType(), CFX_CSSPrimitiveType::Enum);
EXPECT_EQ(v.As<CFX_CSSEnumValue>()->Value(), val);
}
void VerifyList(CFX_CSSProperty prop,
std::vector<CFX_CSSPropertyValue> values) {
ASSERT(decl_);
bool important;
RetainPtr<CFX_CSSValueList> list =
decl_->GetProperty(prop, &important).As<CFX_CSSValueList>();
EXPECT_EQ(list->CountValues(), pdfium::CollectionSize<int32_t>(values));
for (size_t i = 0; i < values.size(); i++) {
RetainPtr<CFX_CSSValue> val = list->GetValue(i);
EXPECT_EQ(val->GetType(), CFX_CSSPrimitiveType::Enum);
EXPECT_EQ(val.As<CFX_CSSEnumValue>()->Value(), values[i]);
}
}
std::unique_ptr<CFX_CSSStyleSheet> sheet_;
CFX_CSSDeclaration* decl_;
};
TEST_F(CFX_CSSStyleSheetTest, ParseMultipleSelectors) {
const wchar_t* buf =
L"a { border: 10px; }\nb { text-decoration: underline; }";
EXPECT_TRUE(sheet_->LoadBuffer(buf, wcslen(buf)));
EXPECT_EQ(2, sheet_->CountRules());
CFX_CSSStyleRule* style = sheet_->GetRule(0);
EXPECT_EQ(1UL, style->CountSelectorLists());
bool found_selector = false;
uint32_t hash = FX_HashCode_GetW(L"a", true);
for (size_t i = 0; i < style->CountSelectorLists(); i++) {
if (style->GetSelectorList(i)->GetNameHash() == hash) {
found_selector = true;
break;
}
}
EXPECT_TRUE(found_selector);
decl_ = style->GetDeclaration();
EXPECT_EQ(4UL, decl_->PropertyCountForTesting());
VerifyFloat(CFX_CSSProperty::BorderLeftWidth, 10.0,
CFX_CSSNumberType::Pixels);
VerifyFloat(CFX_CSSProperty::BorderRightWidth, 10.0,
CFX_CSSNumberType::Pixels);
VerifyFloat(CFX_CSSProperty::BorderTopWidth, 10.0, CFX_CSSNumberType::Pixels);
VerifyFloat(CFX_CSSProperty::BorderBottomWidth, 10.0,
CFX_CSSNumberType::Pixels);
style = sheet_->GetRule(1);
EXPECT_EQ(1UL, style->CountSelectorLists());
found_selector = false;
hash = FX_HashCode_GetW(L"b", true);
for (size_t i = 0; i < style->CountSelectorLists(); i++) {
if (style->GetSelectorList(i)->GetNameHash() == hash) {
found_selector = true;
break;
}
}
EXPECT_TRUE(found_selector);
decl_ = style->GetDeclaration();
EXPECT_EQ(1UL, decl_->PropertyCountForTesting());
VerifyList(CFX_CSSProperty::TextDecoration,
{CFX_CSSPropertyValue::Underline});
}
TEST_F(CFX_CSSStyleSheetTest, ParseChildSelectors) {
const wchar_t* buf = L"a b c { border: 10px; }";
EXPECT_TRUE(sheet_->LoadBuffer(buf, wcslen(buf)));
EXPECT_EQ(1, sheet_->CountRules());
CFX_CSSStyleRule* style = sheet_->GetRule(0);
EXPECT_EQ(1UL, style->CountSelectorLists());
auto* sel = style->GetSelectorList(0);
EXPECT_TRUE(sel != nullptr);
EXPECT_EQ(FX_HashCode_GetW(L"c", true), sel->GetNameHash());
sel = sel->GetNextSelector();
EXPECT_TRUE(sel != nullptr);
EXPECT_EQ(FX_HashCode_GetW(L"b", true), sel->GetNameHash());
sel = sel->GetNextSelector();
EXPECT_TRUE(sel != nullptr);
EXPECT_EQ(FX_HashCode_GetW(L"a", true), sel->GetNameHash());
sel = sel->GetNextSelector();
EXPECT_TRUE(sel == nullptr);
decl_ = style->GetDeclaration();
EXPECT_EQ(4UL, decl_->PropertyCountForTesting());
VerifyFloat(CFX_CSSProperty::BorderLeftWidth, 10.0,
CFX_CSSNumberType::Pixels);
VerifyFloat(CFX_CSSProperty::BorderRightWidth, 10.0,
CFX_CSSNumberType::Pixels);
VerifyFloat(CFX_CSSProperty::BorderTopWidth, 10.0, CFX_CSSNumberType::Pixels);
VerifyFloat(CFX_CSSProperty::BorderBottomWidth, 10.0,
CFX_CSSNumberType::Pixels);
}
TEST_F(CFX_CSSStyleSheetTest, ParseUnhandledSelectors) {
const wchar_t* buf = L"a > b { padding: 0; }";
EXPECT_TRUE(sheet_->LoadBuffer(buf, wcslen(buf)));
EXPECT_EQ(0, sheet_->CountRules());
buf = L"a[first] { padding: 0; }";
EXPECT_TRUE(sheet_->LoadBuffer(buf, wcslen(buf)));
EXPECT_EQ(0, sheet_->CountRules());
buf = L"a+b { padding: 0; }";
EXPECT_TRUE(sheet_->LoadBuffer(buf, wcslen(buf)));
EXPECT_EQ(0, sheet_->CountRules());
buf = L"a ^ b { padding: 0; }";
EXPECT_TRUE(sheet_->LoadBuffer(buf, wcslen(buf)));
EXPECT_EQ(0, sheet_->CountRules());
}
TEST_F(CFX_CSSStyleSheetTest, ParseMultipleSelectorsCombined) {
LoadAndVerifyDecl(L"a, b, c { border: 5px; }", {L"a", L"b", L"c"}, 4);
}
TEST_F(CFX_CSSStyleSheetTest, ParseBorder) {
LoadAndVerifyDecl(L"a { border: 5px; }", {L"a"}, 4);
VerifyFloat(CFX_CSSProperty::BorderLeftWidth, 5.0, CFX_CSSNumberType::Pixels);
VerifyFloat(CFX_CSSProperty::BorderRightWidth, 5.0,
CFX_CSSNumberType::Pixels);
VerifyFloat(CFX_CSSProperty::BorderTopWidth, 5.0, CFX_CSSNumberType::Pixels);
VerifyFloat(CFX_CSSProperty::BorderBottomWidth, 5.0,
CFX_CSSNumberType::Pixels);
}
TEST_F(CFX_CSSStyleSheetTest, ParseBorderFull) {
LoadAndVerifyDecl(L"a { border: 5px solid red; }", {L"a"}, 4);
VerifyFloat(CFX_CSSProperty::BorderLeftWidth, 5.0, CFX_CSSNumberType::Pixels);
VerifyFloat(CFX_CSSProperty::BorderRightWidth, 5.0,
CFX_CSSNumberType::Pixels);
VerifyFloat(CFX_CSSProperty::BorderTopWidth, 5.0, CFX_CSSNumberType::Pixels);
VerifyFloat(CFX_CSSProperty::BorderBottomWidth, 5.0,
CFX_CSSNumberType::Pixels);
}
TEST_F(CFX_CSSStyleSheetTest, ParseBorderLeft) {
LoadAndVerifyDecl(L"a { border-left: 2.5pc; }", {L"a"}, 1);
VerifyFloat(CFX_CSSProperty::BorderLeftWidth, 2.5, CFX_CSSNumberType::Picas);
}
TEST_F(CFX_CSSStyleSheetTest, ParseBorderLeftThick) {
LoadAndVerifyDecl(L"a { border-left: thick; }", {L"a"}, 1);
VerifyEnum(CFX_CSSProperty::BorderLeftWidth, CFX_CSSPropertyValue::Thick);
}
TEST_F(CFX_CSSStyleSheetTest, ParseBorderRight) {
LoadAndVerifyDecl(L"a { border-right: 2.5pc; }", {L"a"}, 1);
VerifyFloat(CFX_CSSProperty::BorderRightWidth, 2.5, CFX_CSSNumberType::Picas);
}
TEST_F(CFX_CSSStyleSheetTest, ParseBorderTop) {
LoadAndVerifyDecl(L"a { border-top: 2.5pc; }", {L"a"}, 1);
VerifyFloat(CFX_CSSProperty::BorderTopWidth, 2.5, CFX_CSSNumberType::Picas);
}
TEST_F(CFX_CSSStyleSheetTest, ParseBorderBottom) {
LoadAndVerifyDecl(L"a { border-bottom: 2.5pc; }", {L"a"}, 1);
VerifyFloat(CFX_CSSProperty::BorderBottomWidth, 2.5,
CFX_CSSNumberType::Picas);
}
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