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/*
* Copyright (C) 2010, 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:
* 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.
*/
#include "config.h"
#include "InspectorStyleSheet.h"
#include "CSSImportRule.h"
#include "CSSKeyframesRule.h"
#include "CSSMediaRule.h"
#include "CSSParser.h"
#include "CSSParserObserver.h"
#include "CSSPropertyNames.h"
#include "CSSPropertyParser.h"
#include "CSSPropertySourceData.h"
#include "CSSRule.h"
#include "CSSRuleList.h"
#include "CSSStyleRule.h"
#include "CSSStyleSheet.h"
#include "CSSSupportsRule.h"
#include "ContentSecurityPolicy.h"
#include "Document.h"
#include "Element.h"
#include "ExtensionStyleSheets.h"
#include "HTMLHeadElement.h"
#include "HTMLNames.h"
#include "HTMLParserIdioms.h"
#include "HTMLStyleElement.h"
#include "InspectorCSSAgent.h"
#include "InspectorDOMAgent.h"
#include "InspectorPageAgent.h"
#include "MediaList.h"
#include "Node.h"
#include "SVGElement.h"
#include "SVGStyleElement.h"
#include "StyleProperties.h"
#include "StyleResolver.h"
#include "StyleRule.h"
#include "StyleRuleImport.h"
#include "StyleSheetContents.h"
#include "StyleSheetList.h"
#include <JavaScriptCore/ContentSearchUtilities.h>
#include <JavaScriptCore/RegularExpression.h>
#include <wtf/text/StringBuilder.h>
using JSON::ArrayOf;
using WebCore::RuleSourceDataList;
using WebCore::CSSRuleSourceData;
class ParsedStyleSheet {
WTF_MAKE_FAST_ALLOCATED;
public:
ParsedStyleSheet();
const String& text() const { ASSERT(m_hasText); return m_text; }
void setText(const String& text);
bool hasText() const { return m_hasText; }
RuleSourceDataList* sourceData() const { return m_sourceData.get(); }
void setSourceData(std::unique_ptr<RuleSourceDataList>);
bool hasSourceData() const { return m_sourceData != nullptr; }
WebCore::CSSRuleSourceData* ruleSourceDataAt(unsigned) const;
private:
String m_text;
bool m_hasText;
std::unique_ptr<RuleSourceDataList> m_sourceData;
};
ParsedStyleSheet::ParsedStyleSheet()
: m_hasText(false)
{
}
void ParsedStyleSheet::setText(const String& text)
{
m_hasText = true;
m_text = text;
setSourceData(nullptr);
}
static void flattenSourceData(RuleSourceDataList& dataList, RuleSourceDataList& target)
{
for (auto& data : dataList) {
if (data->type == WebCore::StyleRuleType::Style)
target.append(data.copyRef());
else if (data->type == WebCore::StyleRuleType::Media)
flattenSourceData(data->childRules, target);
else if (data->type == WebCore::StyleRuleType::Supports)
flattenSourceData(data->childRules, target);
}
}
void ParsedStyleSheet::setSourceData(std::unique_ptr<RuleSourceDataList> sourceData)
{
if (!sourceData) {
m_sourceData.reset();
return;
}
m_sourceData = makeUnique<RuleSourceDataList>();
// FIXME: This is a temporary solution to retain the original flat sourceData structure
// containing only style rules, even though CSSParser now provides the full rule source data tree.
// Normally, we should just assign m_sourceData = sourceData;
flattenSourceData(*sourceData, *m_sourceData);
}
WebCore::CSSRuleSourceData* ParsedStyleSheet::ruleSourceDataAt(unsigned index) const
{
if (!hasSourceData() || index >= m_sourceData->size())
return nullptr;
return m_sourceData->at(index).ptr();
}
namespace WebCore {
using namespace Inspector;
static CSSParserContext parserContextForDocument(Document* document)
{
return document ? CSSParserContext(*document) : strictCSSParserContext();
}
class StyleSheetHandler : public CSSParserObserver {
public:
StyleSheetHandler(const String& parsedText, Document* document, RuleSourceDataList* result)
: m_parsedText(parsedText)
, m_document(document)
, m_ruleSourceDataResult(result)
{
ASSERT(m_ruleSourceDataResult);
}
private:
void startRuleHeader(StyleRuleType, unsigned) override;
void endRuleHeader(unsigned) override;
void observeSelector(unsigned startOffset, unsigned endOffset) override;
void startRuleBody(unsigned) override;
void endRuleBody(unsigned) override;
void observeProperty(unsigned startOffset, unsigned endOffset, bool isImportant, bool isParsed) override;
void observeComment(unsigned startOffset, unsigned endOffset) override;
Ref<CSSRuleSourceData> popRuleData();
template <typename CharacterType> inline void setRuleHeaderEnd(const CharacterType*, unsigned);
void fixUnparsedPropertyRanges(CSSRuleSourceData*);
const String& m_parsedText;
Document* m_document;
RuleSourceDataList m_currentRuleDataStack;
RefPtr<CSSRuleSourceData> m_currentRuleData;
RuleSourceDataList* m_ruleSourceDataResult { nullptr };
};
void StyleSheetHandler::startRuleHeader(StyleRuleType type, unsigned offset)
{
// Pop off data for a previous invalid rule.
if (m_currentRuleData)
m_currentRuleDataStack.removeLast();
auto data = CSSRuleSourceData::create(type);
data->ruleHeaderRange.start = offset;
m_currentRuleData = data.copyRef();
m_currentRuleDataStack.append(WTFMove(data));
}
template <typename CharacterType> inline void StyleSheetHandler::setRuleHeaderEnd(const CharacterType* dataStart, unsigned listEndOffset)
{
while (listEndOffset > 1) {
if (isHTMLSpace<CharacterType>(*(dataStart + listEndOffset - 1)))
--listEndOffset;
else
break;
}
m_currentRuleDataStack.last()->ruleHeaderRange.end = listEndOffset;
if (!m_currentRuleDataStack.last()->selectorRanges.isEmpty())
m_currentRuleDataStack.last()->selectorRanges.last().end = listEndOffset;
}
void StyleSheetHandler::endRuleHeader(unsigned offset)
{
ASSERT(!m_currentRuleDataStack.isEmpty());
if (m_parsedText.is8Bit())
setRuleHeaderEnd<LChar>(m_parsedText.characters8(), offset);
else
setRuleHeaderEnd<UChar>(m_parsedText.characters16(), offset);
}
void StyleSheetHandler::observeSelector(unsigned startOffset, unsigned endOffset)
{
ASSERT(m_currentRuleDataStack.size());
m_currentRuleDataStack.last()->selectorRanges.append(SourceRange(startOffset, endOffset));
}
void StyleSheetHandler::startRuleBody(unsigned offset)
{
m_currentRuleData = nullptr;
ASSERT(!m_currentRuleDataStack.isEmpty());
// Skip the rule body opening brace.
if (m_parsedText[offset] == '{')
++offset;
m_currentRuleDataStack.last()->ruleBodyRange.start = offset;
}
void StyleSheetHandler::endRuleBody(unsigned offset)
{
ASSERT(!m_currentRuleDataStack.isEmpty());
m_currentRuleDataStack.last()->ruleBodyRange.end = offset;
auto rule = popRuleData();
fixUnparsedPropertyRanges(rule.ptr());
if (m_currentRuleDataStack.isEmpty())
m_ruleSourceDataResult->append(WTFMove(rule));
else
m_currentRuleDataStack.last()->childRules.append(WTFMove(rule));
}
Ref<CSSRuleSourceData> StyleSheetHandler::popRuleData()
{
ASSERT(!m_currentRuleDataStack.isEmpty());
m_currentRuleData = nullptr;
auto data = WTFMove(m_currentRuleDataStack.last());
m_currentRuleDataStack.removeLast();
return data;
}
template <typename CharacterType>
static inline void fixUnparsedProperties(const CharacterType* characters, CSSRuleSourceData* ruleData)
{
Vector<CSSPropertySourceData>& propertyData = ruleData->styleSourceData->propertyData;
unsigned size = propertyData.size();
if (!size)
return;
unsigned styleStart = ruleData->ruleBodyRange.start;
CSSPropertySourceData* nextData = &(propertyData.at(0));
for (unsigned i = 0; i < size; ++i) {
CSSPropertySourceData* currentData = nextData;
nextData = i < size - 1 ? &(propertyData.at(i + 1)) : nullptr;
if (currentData->parsedOk)
continue;
if (currentData->range.end > 0 && characters[styleStart + currentData->range.end - 1] == ';')
continue;
unsigned propertyEnd;
if (!nextData)
propertyEnd = ruleData->ruleBodyRange.end - 1;
else
propertyEnd = styleStart + nextData->range.start - 1;
while (isHTMLSpace<CharacterType>(characters[propertyEnd]))
--propertyEnd;
// propertyEnd points at the last property text character.
unsigned newRangeEnd = (propertyEnd - styleStart) + 1;
if (currentData->range.end != newRangeEnd) {
currentData->range.end = newRangeEnd;
unsigned valueStart = styleStart + currentData->range.start + currentData->name.length();
while (valueStart < propertyEnd && characters[valueStart] != ':')
++valueStart;
// Shift past the ':'.
if (valueStart < propertyEnd)
++valueStart;
while (valueStart < propertyEnd && isHTMLSpace<CharacterType>(characters[valueStart]))
++valueStart;
// Need to exclude the trailing ';' from the property value.
currentData->value = String(characters + valueStart, propertyEnd - valueStart + (characters[propertyEnd] == ';' ? 0 : 1));
}
}
}
void StyleSheetHandler::fixUnparsedPropertyRanges(CSSRuleSourceData* ruleData)
{
if (!ruleData->styleSourceData)
return;
if (m_parsedText.is8Bit()) {
fixUnparsedProperties<LChar>(m_parsedText.characters8(), ruleData);
return;
}
fixUnparsedProperties<UChar>(m_parsedText.characters16(), ruleData);
}
void StyleSheetHandler::observeProperty(unsigned startOffset, unsigned endOffset, bool isImportant, bool isParsed)
{
if (m_currentRuleDataStack.isEmpty() || !m_currentRuleDataStack.last()->styleSourceData)
return;
ASSERT(endOffset <= m_parsedText.length());
// Include semicolon in the property text.
if (endOffset < m_parsedText.length() && m_parsedText[endOffset] == ';')
++endOffset;
ASSERT(startOffset < endOffset);
String propertyString = m_parsedText.substring(startOffset, endOffset - startOffset).stripWhiteSpace();
if (propertyString.endsWith(';'))
propertyString = propertyString.left(propertyString.length() - 1);
size_t colonIndex = propertyString.find(':');
ASSERT(colonIndex != notFound);
String name = propertyString.left(colonIndex).stripWhiteSpace();
String value = propertyString.substring(colonIndex + 1, propertyString.length()).stripWhiteSpace();
// FIXME-NEWPARSER: The property range is relative to the declaration start offset, but no
// good reason for it, and it complicates fixUnparsedProperties.
SourceRange& topRuleBodyRange = m_currentRuleDataStack.last()->ruleBodyRange;
m_currentRuleDataStack.last()->styleSourceData->propertyData.append(CSSPropertySourceData(name, value, isImportant, false, isParsed, SourceRange(startOffset - topRuleBodyRange.start, endOffset - topRuleBodyRange.start)));
}
void StyleSheetHandler::observeComment(unsigned startOffset, unsigned endOffset)
{
ASSERT(endOffset <= m_parsedText.length());
if (m_currentRuleDataStack.isEmpty() || !m_currentRuleDataStack.last()->ruleHeaderRange.end || !m_currentRuleDataStack.last()->styleSourceData)
return;
// The lexer is not inside a property AND it is scanning a declaration-aware
// rule body.
String commentText = m_parsedText.substring(startOffset, endOffset - startOffset);
ASSERT(commentText.startsWith("/*"));
commentText = commentText.substring(2);
// Require well-formed comments.
if (!commentText.endsWith("*/"))
return;
commentText = commentText.substring(0, commentText.length() - 2).stripWhiteSpace();
if (commentText.isEmpty())
return;
// FIXME: Use the actual rule type rather than STYLE_RULE?
RuleSourceDataList sourceData;
StyleSheetHandler handler(commentText, m_document, &sourceData);
CSSParser::parseDeclarationForInspector(parserContextForDocument(m_document), commentText, handler);
Vector<CSSPropertySourceData>& commentPropertyData = sourceData.first()->styleSourceData->propertyData;
if (commentPropertyData.size() != 1)
return;
CSSPropertySourceData& propertyData = commentPropertyData.at(0);
bool parsedOk = propertyData.parsedOk || propertyData.name.startsWith("-moz-") || propertyData.name.startsWith("-o-") || propertyData.name.startsWith("-webkit-") || propertyData.name.startsWith("-ms-");
if (!parsedOk || propertyData.range.length() != commentText.length())
return;
// FIXME-NEWPARSER: The property range is relative to the declaration start offset, but no
// good reason for it, and it complicates fixUnparsedProperties.
SourceRange& topRuleBodyRange = m_currentRuleDataStack.last()->ruleBodyRange;
m_currentRuleDataStack.last()->styleSourceData->propertyData.append(CSSPropertySourceData(propertyData.name, propertyData.value, false, true, true, SourceRange(startOffset - topRuleBodyRange.start, endOffset - topRuleBodyRange.start)));
}
static RefPtr<Inspector::Protocol::CSS::SourceRange> buildSourceRangeObject(const SourceRange& range, const Vector<size_t>& lineEndings, int* endingLine = nullptr)
{
if (lineEndings.isEmpty())
return nullptr;
TextPosition start = ContentSearchUtilities::textPositionFromOffset(range.start, lineEndings);
TextPosition end = ContentSearchUtilities::textPositionFromOffset(range.end, lineEndings);
if (endingLine)
*endingLine = end.m_line.zeroBasedInt();
return Inspector::Protocol::CSS::SourceRange::create()
.setStartLine(start.m_line.zeroBasedInt())
.setStartColumn(start.m_column.zeroBasedInt())
.setEndLine(end.m_line.zeroBasedInt())
.setEndColumn(end.m_column.zeroBasedInt())
.release();
}
static RefPtr<CSSRuleList> asCSSRuleList(CSSStyleSheet* styleSheet)
{
if (!styleSheet)
return nullptr;
auto list = StaticCSSRuleList::create();
Vector<RefPtr<CSSRule>>& listRules = list->rules();
for (unsigned i = 0, size = styleSheet->length(); i < size; ++i)
listRules.append(styleSheet->item(i));
return list;
}
static RefPtr<CSSRuleList> asCSSRuleList(CSSRule* rule)
{
if (!rule)
return nullptr;
if (is<CSSMediaRule>(*rule))
return &downcast<CSSMediaRule>(*rule).cssRules();
if (is<CSSKeyframesRule>(*rule))
return &downcast<CSSKeyframesRule>(*rule).cssRules();
if (is<CSSSupportsRule>(*rule))
return &downcast<CSSSupportsRule>(*rule).cssRules();
return nullptr;
}
static Ref<JSON::ArrayOf<Inspector::Protocol::CSS::Grouping>> buildArrayForGroupings(CSSRule& rule)
{
auto groupingsPayload = JSON::ArrayOf<Inspector::Protocol::CSS::Grouping>::create();
auto* parentRule = &rule;
while (parentRule) {
RefPtr<Inspector::Protocol::CSS::Grouping> ruleGroupingPayload;
if (is<CSSMediaRule>(parentRule)) {
auto* media = downcast<CSSMediaRule>(parentRule)->media();
if (media && media->length() && media->mediaText() != "all") {
ruleGroupingPayload = Inspector::Protocol::CSS::Grouping::create()
.setText(media->mediaText())
.setType(Inspector::Protocol::CSS::Grouping::Type::MediaRule)
.release();
}
} else if (is<CSSImportRule>(parentRule)) {
auto& media = downcast<CSSImportRule>(parentRule)->media();
if (media.length() && media.mediaText() != "all") {
ruleGroupingPayload = Inspector::Protocol::CSS::Grouping::create()
.setText(media.mediaText())
.setType(Inspector::Protocol::CSS::Grouping::Type::MediaImportRule)
.release();
}
} else if (is<CSSSupportsRule>(parentRule)) {
ruleGroupingPayload = Inspector::Protocol::CSS::Grouping::create()
.setText(downcast<CSSSupportsRule>(parentRule)->conditionText())
.setType(Inspector::Protocol::CSS::Grouping::Type::SupportsRule)
.release();
}
if (ruleGroupingPayload) {
if (auto* parentStyleSheet = parentRule->parentStyleSheet()) {
String sourceURL = parentStyleSheet->contents().baseURL();
if (sourceURL.isEmpty()) {
if (auto* ownerDocument = parentStyleSheet->ownerDocument())
sourceURL = InspectorDOMAgent::documentURLString(ownerDocument);
}
if (!sourceURL.isEmpty())
ruleGroupingPayload->setSourceURL(sourceURL);
}
groupingsPayload->addItem(WTFMove(ruleGroupingPayload));
}
if (parentRule->parentRule()) {
parentRule = parentRule->parentRule();
continue;
}
auto* styleSheet = parentRule->parentStyleSheet();
while (styleSheet) {
auto* media = styleSheet->media();
if (media && media->length() && media->mediaText() != "all") {
auto sheetGroupingPayload = Inspector::Protocol::CSS::Grouping::create()
.setText(media->mediaText())
.setType(is<HTMLStyleElement>(styleSheet->ownerNode()) ? Inspector::Protocol::CSS::Grouping::Type::MediaStyleNode: Inspector::Protocol::CSS::Grouping::Type::MediaLinkNode)
.release();
String sourceURL;
if (auto* ownerDocument = styleSheet->ownerDocument())
sourceURL = ownerDocument->url();
else if (!styleSheet->contents().baseURL().isEmpty())
sourceURL = styleSheet->contents().baseURL();
if (!sourceURL.isEmpty())
sheetGroupingPayload->setSourceURL(sourceURL);
groupingsPayload->addItem(WTFMove(sheetGroupingPayload));
}
parentRule = styleSheet->ownerRule();
if (parentRule)
break;
styleSheet = styleSheet->parentStyleSheet();
}
}
return groupingsPayload;
}
Ref<InspectorStyle> InspectorStyle::create(const InspectorCSSId& styleId, Ref<CSSStyleDeclaration>&& style, InspectorStyleSheet* parentStyleSheet)
{
return adoptRef(*new InspectorStyle(styleId, WTFMove(style), parentStyleSheet));
}
InspectorStyle::InspectorStyle(const InspectorCSSId& styleId, Ref<CSSStyleDeclaration>&& style, InspectorStyleSheet* parentStyleSheet)
: m_styleId(styleId)
, m_style(WTFMove(style))
, m_parentStyleSheet(parentStyleSheet)
{
}
InspectorStyle::~InspectorStyle() = default;
RefPtr<Inspector::Protocol::CSS::CSSStyle> InspectorStyle::buildObjectForStyle() const
{
Ref<Inspector::Protocol::CSS::CSSStyle> result = styleWithProperties();
if (!m_styleId.isEmpty())
result->setStyleId(m_styleId.asProtocolValue<Inspector::Protocol::CSS::CSSStyleId>());
result->setWidth(m_style->getPropertyValue("width"));
result->setHeight(m_style->getPropertyValue("height"));
RefPtr<CSSRuleSourceData> sourceData = extractSourceData();
if (sourceData)
result->setRange(buildSourceRangeObject(sourceData->ruleBodyRange, m_parentStyleSheet->lineEndings()));
return result;
}
Ref<JSON::ArrayOf<Inspector::Protocol::CSS::CSSComputedStyleProperty>> InspectorStyle::buildArrayForComputedStyle() const
{
auto result = JSON::ArrayOf<Inspector::Protocol::CSS::CSSComputedStyleProperty>::create();
for (auto& property : collectProperties(true)) {
const CSSPropertySourceData& propertyEntry = property.sourceData;
auto entry = Inspector::Protocol::CSS::CSSComputedStyleProperty::create()
.setName(propertyEntry.name)
.setValue(propertyEntry.value)
.release();
result->addItem(WTFMove(entry));
}
return result;
}
ExceptionOr<String> InspectorStyle::text() const
{
// Precondition: m_parentStyleSheet->ensureParsedDataReady() has been called successfully.
auto sourceData = extractSourceData();
if (!sourceData)
return Exception { NotFoundError };
auto result = m_parentStyleSheet->text();
if (result.hasException())
return result.releaseException();
auto& bodyRange = sourceData->ruleBodyRange;
return result.releaseReturnValue().substring(bodyRange.start, bodyRange.end - bodyRange.start);
}
static String lowercasePropertyName(const String& name)
{
// Custom properties are case-sensitive.
if (name.startsWith("--"))
return name;
return name.convertToASCIILowercase();
}
Vector<InspectorStyleProperty> InspectorStyle::collectProperties(bool includeAll) const
{
Vector<InspectorStyleProperty> result;
HashSet<String> sourcePropertyNames;
auto sourceData = extractSourceData();
auto* sourcePropertyData = sourceData ? &sourceData->styleSourceData->propertyData : nullptr;
if (sourcePropertyData) {
auto styleDeclarationOrException = text();
ASSERT(!styleDeclarationOrException.hasException());
String styleDeclaration = styleDeclarationOrException.hasException() ? emptyString() : styleDeclarationOrException.releaseReturnValue();
for (auto& sourceData : *sourcePropertyData) {
InspectorStyleProperty p(sourceData, true, sourceData.disabled);
p.setRawTextFromStyleDeclaration(styleDeclaration);
result.append(p);
sourcePropertyNames.add(lowercasePropertyName(sourceData.name));
}
}
for (int i = 0, size = m_style->length(); i < size; ++i) {
String name = m_style->item(i);
if (sourcePropertyNames.add(lowercasePropertyName(name)))
result.append(InspectorStyleProperty(CSSPropertySourceData(name, m_style->getPropertyValue(name), !m_style->getPropertyPriority(name).isEmpty(), false, true, SourceRange()), false, false));
}
if (includeAll) {
for (auto i = firstCSSProperty; i < lastCSSProperty; ++i) {
auto id = convertToCSSPropertyID(i);
if (isInternalCSSProperty(id) || !isEnabledCSSProperty(id))
continue;
auto name = getPropertyNameString(id);
if (!sourcePropertyNames.add(lowercasePropertyName(name)))
continue;
auto value = m_style->getPropertyValue(name);
if (value.isEmpty())
continue;
result.append(InspectorStyleProperty(CSSPropertySourceData(name, value, !m_style->getPropertyPriority(name).isEmpty(), false, true, SourceRange()), false, false));
}
}
return result;
}
Ref<Inspector::Protocol::CSS::CSSStyle> InspectorStyle::styleWithProperties() const
{
auto properties = collectProperties(false);
auto propertiesObject = JSON::ArrayOf<Inspector::Protocol::CSS::CSSProperty>::create();
auto shorthandEntries = ArrayOf<Inspector::Protocol::CSS::ShorthandEntry>::create();
HashMap<String, RefPtr<Inspector::Protocol::CSS::CSSProperty>> propertyNameToPreviousActiveProperty;
HashSet<String> foundShorthands;
String previousPriority;
String previousStatus;
Vector<size_t> lineEndings = m_parentStyleSheet ? m_parentStyleSheet->lineEndings() : Vector<size_t> { };
auto sourceData = extractSourceData();
unsigned ruleBodyRangeStart = sourceData ? sourceData->ruleBodyRange.start : 0;
for (Vector<InspectorStyleProperty>::iterator it = properties.begin(), itEnd = properties.end(); it != itEnd; ++it) {
const CSSPropertySourceData& propertyEntry = it->sourceData;
const String& name = propertyEntry.name;
auto status = it->disabled ? Inspector::Protocol::CSS::CSSPropertyStatus::Disabled : Inspector::Protocol::CSS::CSSPropertyStatus::Active;
auto property = Inspector::Protocol::CSS::CSSProperty::create()
.setName(name.convertToASCIILowercase())
.setValue(propertyEntry.value)
.release();
propertiesObject->addItem(property.copyRef());
CSSPropertyID propertyId = cssPropertyID(name);
// Default "parsedOk" == true.
if (!propertyEntry.parsedOk || isInternalCSSProperty(propertyId))
property->setParsedOk(false);
if (it->hasRawText())
property->setText(it->rawText);
// Default "priority" == "".
if (propertyEntry.important)
property->setPriority("important");
if (it->hasSource) {
// The property range is relative to the style body start.
// Should be converted into an absolute range (relative to the stylesheet start)
// for the proper conversion into line:column.
SourceRange absolutePropertyRange = propertyEntry.range;
absolutePropertyRange.start += ruleBodyRangeStart;
absolutePropertyRange.end += ruleBodyRangeStart;
property->setRange(buildSourceRangeObject(absolutePropertyRange, lineEndings));
}
if (!it->disabled) {
if (it->hasSource) {
ASSERT(sourceData);
property->setImplicit(false);
// Parsed property overrides any property with the same name. Non-parsed property overrides
// previous non-parsed property with the same name (if any).
bool shouldInactivate = false;
// Canonicalize property names to treat non-prefixed and vendor-prefixed property names the same (opacity vs. -webkit-opacity).
String canonicalPropertyName = propertyId ? getPropertyNameString(propertyId) : name;
HashMap<String, RefPtr<Inspector::Protocol::CSS::CSSProperty>>::iterator activeIt = propertyNameToPreviousActiveProperty.find(canonicalPropertyName);
if (activeIt != propertyNameToPreviousActiveProperty.end()) {
if (propertyEntry.parsedOk) {
bool successPriority = activeIt->value->getString(Inspector::Protocol::CSS::CSSProperty::Priority, previousPriority);
bool successStatus = activeIt->value->getString(Inspector::Protocol::CSS::CSSProperty::Status, previousStatus);
if (successStatus && previousStatus != "inactive") {
if (propertyEntry.important || !successPriority) // Priority not set == "not important".
shouldInactivate = true;
else if (status == Inspector::Protocol::CSS::CSSPropertyStatus::Active) {
// Inactivate a non-important property following the same-named important property.
status = Inspector::Protocol::CSS::CSSPropertyStatus::Inactive;
}
}
} else {
bool previousParsedOk;
bool success = activeIt->value->getBoolean(Inspector::Protocol::CSS::CSSProperty::ParsedOk, previousParsedOk);
if (success && !previousParsedOk)
shouldInactivate = true;
}
} else
propertyNameToPreviousActiveProperty.set(canonicalPropertyName, property.copyRef());
if (shouldInactivate) {
activeIt->value->setStatus(Inspector::Protocol::CSS::CSSPropertyStatus::Inactive);
propertyNameToPreviousActiveProperty.set(canonicalPropertyName, property.copyRef());
}
} else {
bool implicit = m_style->isPropertyImplicit(name);
// Default "implicit" == false.
if (implicit)
property->setImplicit(true);
status = Inspector::Protocol::CSS::CSSPropertyStatus::Style;
String shorthand = m_style->getPropertyShorthand(name);
if (!shorthand.isEmpty()) {
if (!foundShorthands.contains(shorthand)) {
foundShorthands.add(shorthand);
auto entry = Inspector::Protocol::CSS::ShorthandEntry::create()
.setName(shorthand)
.setValue(shorthandValue(shorthand))
.release();
shorthandEntries->addItem(WTFMove(entry));
}
}
}
}
// Default "status" == "style".
if (status != Inspector::Protocol::CSS::CSSPropertyStatus::Style)
property->setStatus(status);
}
return Inspector::Protocol::CSS::CSSStyle::create()
.setCssProperties(WTFMove(propertiesObject))
.setShorthandEntries(WTFMove(shorthandEntries))
.release();
}
RefPtr<CSSRuleSourceData> InspectorStyle::extractSourceData() const
{
if (!m_parentStyleSheet || !m_parentStyleSheet->ensureParsedDataReady())
return nullptr;
return m_parentStyleSheet->ruleSourceDataFor(m_style.ptr());
}
ExceptionOr<void> InspectorStyle::setText(const String& text)
{
return m_parentStyleSheet->setStyleText(m_style.ptr(), text);
}
String InspectorStyle::shorthandValue(const String& shorthandProperty) const
{
String value = m_style->getPropertyValue(shorthandProperty);
if (!value.isEmpty())
return value;
StringBuilder builder;
for (unsigned i = 0; i < m_style->length(); ++i) {
String individualProperty = m_style->item(i);
if (m_style->getPropertyShorthand(individualProperty) != shorthandProperty)
continue;
if (m_style->isPropertyImplicit(individualProperty))
continue;
String individualValue = m_style->getPropertyValue(individualProperty);
if (individualValue == "initial")
continue;
if (!builder.isEmpty())
builder.append(' ');
builder.append(individualValue);
}
return builder.toString();
}
String InspectorStyle::shorthandPriority(const String& shorthandProperty) const
{
String priority = m_style->getPropertyPriority(shorthandProperty);
if (priority.isEmpty()) {
for (unsigned i = 0; i < m_style->length(); ++i) {
String individualProperty = m_style->item(i);
if (m_style->getPropertyShorthand(individualProperty) != shorthandProperty)
continue;
priority = m_style->getPropertyPriority(individualProperty);
break;
}
}
return priority;
}
Vector<String> InspectorStyle::longhandProperties(const String& shorthandProperty) const
{
Vector<String> properties;
HashSet<String> foundProperties;
for (unsigned i = 0; i < m_style->length(); ++i) {
String individualProperty = m_style->item(i);
if (foundProperties.contains(individualProperty) || m_style->getPropertyShorthand(individualProperty) != shorthandProperty)
continue;
foundProperties.add(individualProperty);
properties.append(individualProperty);
}
return properties;
}
Ref<InspectorStyleSheet> InspectorStyleSheet::create(InspectorPageAgent* pageAgent, const String& id, RefPtr<CSSStyleSheet>&& pageStyleSheet, Inspector::Protocol::CSS::StyleSheetOrigin origin, const String& documentURL, Listener* listener)
{
return adoptRef(*new InspectorStyleSheet(pageAgent, id, WTFMove(pageStyleSheet), origin, documentURL, listener));
}
String InspectorStyleSheet::styleSheetURL(CSSStyleSheet* pageStyleSheet)
{
if (pageStyleSheet && !pageStyleSheet->contents().baseURL().isEmpty())
return pageStyleSheet->contents().baseURL().string();
return emptyString();
}
InspectorStyleSheet::InspectorStyleSheet(InspectorPageAgent* pageAgent, const String& id, RefPtr<CSSStyleSheet>&& pageStyleSheet, Inspector::Protocol::CSS::StyleSheetOrigin origin, const String& documentURL, Listener* listener)
: m_pageAgent(pageAgent)
, m_id(id)
, m_pageStyleSheet(WTFMove(pageStyleSheet))
, m_origin(origin)
, m_documentURL(documentURL)
, m_listener(listener)
{
m_parsedStyleSheet = new ParsedStyleSheet();
}
InspectorStyleSheet::~InspectorStyleSheet()
{
delete m_parsedStyleSheet;
}
String InspectorStyleSheet::finalURL() const
{
String url = styleSheetURL(m_pageStyleSheet.get());
return url.isEmpty() ? m_documentURL : url;
}
void InspectorStyleSheet::reparseStyleSheet(const String& text)
{
{
// Have a separate scope for clearRules() (bug 95324).
CSSStyleSheet::RuleMutationScope mutationScope(m_pageStyleSheet.get());
m_pageStyleSheet->contents().clearRules();
}
{
CSSStyleSheet::RuleMutationScope mutationScope(m_pageStyleSheet.get());
m_pageStyleSheet->contents().parseString(text);
m_pageStyleSheet->clearChildRuleCSSOMWrappers();
fireStyleSheetChanged();
}
// We just wiped the entire contents of the stylesheet. Clear the mutation flag.
m_pageStyleSheet->clearHadRulesMutation();
}
ExceptionOr<void> InspectorStyleSheet::setText(const String& text)
{
if (!m_pageStyleSheet)
return Exception { NotSupportedError };
m_parsedStyleSheet->setText(text);
m_flatRules.clear();
return { };
}
ExceptionOr<String> InspectorStyleSheet::ruleSelector(const InspectorCSSId& id)
{
CSSStyleRule* rule = ruleForId(id);
if (!rule)
return Exception { NotFoundError };
return rule->selectorText();
}
static bool isValidSelectorListString(const String& selector, Document* document)
{
CSSSelectorList selectorList;
CSSParser parser(parserContextForDocument(document));
parser.parseSelector(selector, selectorList);
return selectorList.isValid();
}
ExceptionOr<void> InspectorStyleSheet::setRuleSelector(const InspectorCSSId& id, const String& selector)
{
if (!m_pageStyleSheet)
return Exception { NotSupportedError };
// If the selector is invalid, do not proceed any further.
if (!isValidSelectorListString(selector, m_pageStyleSheet->ownerDocument()))
return Exception { SyntaxError };
CSSStyleRule* rule = ruleForId(id);
if (!rule)
return Exception { NotFoundError };
CSSStyleSheet* styleSheet = rule->parentStyleSheet();
if (!styleSheet || !ensureParsedDataReady())
return Exception { NotFoundError };
// If the stylesheet is already mutated at this point, that must mean that our data has been modified
// elsewhere. This should never happen as ensureParsedDataReady would return false in that case.
ASSERT(!styleSheetMutated());
rule->setSelectorText(selector);
auto sourceData = ruleSourceDataFor(&rule->style());
if (!sourceData)
return Exception { NotFoundError };
String sheetText = m_parsedStyleSheet->text();
sheetText.replace(sourceData->ruleHeaderRange.start, sourceData->ruleHeaderRange.length(), selector);
m_parsedStyleSheet->setText(sheetText);
m_pageStyleSheet->clearHadRulesMutation();
fireStyleSheetChanged();
return { };
}
ExceptionOr<CSSStyleRule*> InspectorStyleSheet::addRule(const String& selector)
{
if (!m_pageStyleSheet)
return Exception { NotSupportedError };
if (!isValidSelectorListString(selector, m_pageStyleSheet->ownerDocument()))
return Exception { SyntaxError };
auto text = this->text();
if (text.hasException())
return text.releaseException();
auto addRuleResult = m_pageStyleSheet->addRule(selector, emptyString(), WTF::nullopt);
if (addRuleResult.hasException())
return addRuleResult.releaseException();
StringBuilder styleSheetText;
styleSheetText.append(text.releaseReturnValue());
if (!styleSheetText.isEmpty())
styleSheetText.append('\n');
styleSheetText.append(selector);
styleSheetText.appendLiteral(" {}");
// Using setText() as this operation changes the stylesheet rule set.
setText(styleSheetText.toString());
// Inspector Style Sheets are always treated as though their parsed data is ready.
if (m_origin == Inspector::Protocol::CSS::StyleSheetOrigin::Inspector)
fireStyleSheetChanged();
else
reparseStyleSheet(styleSheetText.toString());
ASSERT(m_pageStyleSheet->length());
unsigned lastRuleIndex = m_pageStyleSheet->length() - 1;
CSSRule* rule = m_pageStyleSheet->item(lastRuleIndex);
ASSERT(rule);
CSSStyleRule* styleRule = InspectorCSSAgent::asCSSStyleRule(*rule);
if (!styleRule) {
// What we just added has to be a CSSStyleRule - we cannot handle other types of rules yet.
// If it is not a style rule, pretend we never touched the stylesheet.
m_pageStyleSheet->deleteRule(lastRuleIndex);
return Exception { SyntaxError };
}
return styleRule;
}
ExceptionOr<void> InspectorStyleSheet::deleteRule(const InspectorCSSId& id)
{
if (!m_pageStyleSheet)
return Exception { NotSupportedError };
RefPtr<CSSStyleRule> rule = ruleForId(id);
if (!rule)
return Exception { NotFoundError };
CSSStyleSheet* styleSheet = rule->parentStyleSheet();
if (!styleSheet || !ensureParsedDataReady())
return Exception { NotFoundError };
auto sourceData = ruleSourceDataFor(&rule->style());
if (!sourceData)
return Exception { NotFoundError };
auto deleteRuleResult = styleSheet->deleteRule(id.ordinal());
if (deleteRuleResult.hasException())
return deleteRuleResult.releaseException();
// |rule| MAY NOT be addressed after this!
String sheetText = m_parsedStyleSheet->text();
sheetText.remove(sourceData->ruleHeaderRange.start, sourceData->ruleBodyRange.end - sourceData->ruleHeaderRange.start + 1);
setText(sheetText);
fireStyleSheetChanged();
return { };
}
CSSStyleRule* InspectorStyleSheet::ruleForId(const InspectorCSSId& id) const
{
if (!m_pageStyleSheet)
return nullptr;
ASSERT(!id.isEmpty());
ensureFlatRules();
return id.ordinal() >= m_flatRules.size() ? nullptr : m_flatRules.at(id.ordinal()).get();
}
RefPtr<Inspector::Protocol::CSS::CSSStyleSheetBody> InspectorStyleSheet::buildObjectForStyleSheet()
{
CSSStyleSheet* styleSheet = pageStyleSheet();
if (!styleSheet)
return nullptr;
RefPtr<CSSRuleList> cssRuleList = asCSSRuleList(styleSheet);
auto result = Inspector::Protocol::CSS::CSSStyleSheetBody::create()
.setStyleSheetId(id())
.setRules(buildArrayForRuleList(cssRuleList.get()))
.release();
auto styleSheetText = text();
if (!styleSheetText.hasException())
result->setText(styleSheetText.releaseReturnValue());
return result;
}
RefPtr<Inspector::Protocol::CSS::CSSStyleSheetHeader> InspectorStyleSheet::buildObjectForStyleSheetInfo()
{
CSSStyleSheet* styleSheet = pageStyleSheet();
if (!styleSheet)
return nullptr;
Document* document = styleSheet->ownerDocument();
Frame* frame = document ? document->frame() : nullptr;
return Inspector::Protocol::CSS::CSSStyleSheetHeader::create()
.setStyleSheetId(id())
.setOrigin(m_origin)
.setDisabled(styleSheet->disabled())
.setSourceURL(finalURL())
.setTitle(styleSheet->title())
.setFrameId(m_pageAgent->frameId(frame))
.setIsInline(styleSheet->isInline() && styleSheet->startPosition() != TextPosition())
.setStartLine(styleSheet->startPosition().m_line.zeroBasedInt())
.setStartColumn(styleSheet->startPosition().m_column.zeroBasedInt())
.release();
}
static bool hasDynamicSpecificity(const CSSSelector& simpleSelector)
{
// It is possible that these can have a static specificity if each selector in the list has
// equal specificity, but lets always report that they can be dynamic.
for (const CSSSelector* selector = &simpleSelector; selector; selector = selector->tagHistory()) {
if (selector->match() == CSSSelector::PseudoClass) {
CSSSelector::PseudoClassType pseudoClassType = selector->pseudoClassType();
if (pseudoClassType == CSSSelector::PseudoClassMatches)
return true;
if (pseudoClassType == CSSSelector::PseudoClassNthChild || pseudoClassType == CSSSelector::PseudoClassNthLastChild) {
if (selector->selectorList())
return true;
return false;
}
}
}
return false;
}
static Ref<Inspector::Protocol::CSS::CSSSelector> buildObjectForSelectorHelper(const String& selectorText, const CSSSelector& selector, Element* element)
{
auto inspectorSelector = Inspector::Protocol::CSS::CSSSelector::create()
.setText(selectorText)
.release();
if (element) {
bool dynamic = hasDynamicSpecificity(selector);
if (dynamic)
inspectorSelector->setDynamic(true);
SelectorChecker::CheckingContext context(SelectorChecker::Mode::CollectingRules);
SelectorChecker selectorChecker(element->document());
unsigned specificity;
bool okay = selectorChecker.match(selector, *element, context, specificity);
if (!okay)
specificity = selector.staticSpecificity(okay);
if (okay) {
auto tuple = JSON::ArrayOf<int>::create();
tuple->addItem(static_cast<int>((specificity & CSSSelector::idMask) >> 16));
tuple->addItem(static_cast<int>((specificity & CSSSelector::classMask) >> 8));
tuple->addItem(static_cast<int>(specificity & CSSSelector::elementMask));
inspectorSelector->setSpecificity(WTFMove(tuple));
}
}
return inspectorSelector;
}
static Ref<JSON::ArrayOf<Inspector::Protocol::CSS::CSSSelector>> selectorsFromSource(const CSSRuleSourceData* sourceData, const String& sheetText, const CSSSelectorList& selectorList, Element* element)
{
static NeverDestroyed<JSC::Yarr::RegularExpression> comment("/\\*[^]*?\\*/", JSC::Yarr::TextCaseSensitive, JSC::Yarr::MultilineEnabled);
auto result = JSON::ArrayOf<Inspector::Protocol::CSS::CSSSelector>::create();
const CSSSelector* selector = selectorList.first();
for (auto& range : sourceData->selectorRanges) {
// If we don't have a selector, that means the SourceData for this CSSStyleSheet
// no longer matches up with the actual rules in the CSSStyleSheet.
ASSERT(selector);
if (!selector)
break;
String selectorText = sheetText.substring(range.start, range.length());
// We don't want to see any comments in the selector components, only the meaningful parts.
replace(selectorText, comment, String());
result->addItem(buildObjectForSelectorHelper(selectorText.stripWhiteSpace(), *selector, element));
selector = CSSSelectorList::next(selector);
}
return result;
}
Ref<Inspector::Protocol::CSS::CSSSelector> InspectorStyleSheet::buildObjectForSelector(const CSSSelector* selector, Element* element)
{
return buildObjectForSelectorHelper(selector->selectorText(), *selector, element);
}
Ref<Inspector::Protocol::CSS::SelectorList> InspectorStyleSheet::buildObjectForSelectorList(CSSStyleRule* rule, Element* element, int& endingLine)
{
RefPtr<CSSRuleSourceData> sourceData;
if (ensureParsedDataReady())
sourceData = ruleSourceDataFor(&rule->style());
RefPtr<JSON::ArrayOf<Inspector::Protocol::CSS::CSSSelector>> selectors;
// This intentionally does not rely on the source data to avoid catching the trailing comments (before the declaration starting '{').
String selectorText = rule->selectorText();
if (sourceData)
selectors = selectorsFromSource(sourceData.get(), m_parsedStyleSheet->text(), rule->styleRule().selectorList(), element);
else {
selectors = JSON::ArrayOf<Inspector::Protocol::CSS::CSSSelector>::create();
const CSSSelectorList& selectorList = rule->styleRule().selectorList();
for (const CSSSelector* selector = selectorList.first(); selector; selector = CSSSelectorList::next(selector))
selectors->addItem(buildObjectForSelector(selector, element));
}
auto result = Inspector::Protocol::CSS::SelectorList::create()
.setSelectors(WTFMove(selectors))
.setText(selectorText)
.release();
if (sourceData)
result->setRange(buildSourceRangeObject(sourceData->ruleHeaderRange, lineEndings(), &endingLine));
return result;
}
RefPtr<Inspector::Protocol::CSS::CSSRule> InspectorStyleSheet::buildObjectForRule(CSSStyleRule* rule, Element* element)
{
CSSStyleSheet* styleSheet = pageStyleSheet();
if (!styleSheet)
return nullptr;
int endingLine = 0;
auto result = Inspector::Protocol::CSS::CSSRule::create()
.setSelectorList(buildObjectForSelectorList(rule, element, endingLine))
.setSourceLine(endingLine)
.setOrigin(m_origin)
.setStyle(buildObjectForStyle(&rule->style()))
.release();
if (m_origin == Inspector::Protocol::CSS::StyleSheetOrigin::Regular || m_origin == Inspector::Protocol::CSS::StyleSheetOrigin::User)
result->setSourceURL(finalURL());
if (canBind()) {
InspectorCSSId id(ruleId(rule));
if (!id.isEmpty())
result->setRuleId(id.asProtocolValue<Inspector::Protocol::CSS::CSSRuleId>());
}
auto groupingsPayload = buildArrayForGroupings(*rule);
if (groupingsPayload->length())
result->setGroupings(WTFMove(groupingsPayload));
return result;
}
RefPtr<Inspector::Protocol::CSS::CSSStyle> InspectorStyleSheet::buildObjectForStyle(CSSStyleDeclaration* style)
{
RefPtr<CSSRuleSourceData> sourceData;
if (ensureParsedDataReady())
sourceData = ruleSourceDataFor(style);
InspectorCSSId id = ruleOrStyleId(style);
if (id.isEmpty()) {
return Inspector::Protocol::CSS::CSSStyle::create()
.setCssProperties(ArrayOf<Inspector::Protocol::CSS::CSSProperty>::create())
.setShorthandEntries(ArrayOf<Inspector::Protocol::CSS::ShorthandEntry>::create())
.release();
}
RefPtr<InspectorStyle> inspectorStyle = inspectorStyleForId(id);
RefPtr<Inspector::Protocol::CSS::CSSStyle> result = inspectorStyle->buildObjectForStyle();
// Style text cannot be retrieved without stylesheet, so set cssText here.
if (sourceData) {
auto sheetText = text();
if (!sheetText.hasException()) {
auto& bodyRange = sourceData->ruleBodyRange;
result->setCssText(sheetText.releaseReturnValue().substring(bodyRange.start, bodyRange.end - bodyRange.start));
}
}
return result;
}
ExceptionOr<void> InspectorStyleSheet::setStyleText(const InspectorCSSId& id, const String& text, String* oldText)
{
auto inspectorStyle = inspectorStyleForId(id);
if (!inspectorStyle)
return Exception { NotFoundError };
if (oldText) {
auto result = inspectorStyle->text();
if (result.hasException())
return result.releaseException();
*oldText = result.releaseReturnValue();
}
auto result = inspectorStyle->setText(text);
if (!result.hasException())
fireStyleSheetChanged();
return result;
}
ExceptionOr<String> InspectorStyleSheet::text() const
{
if (!ensureText())
return Exception { NotFoundError };
return String { m_parsedStyleSheet->text() };
}
CSSStyleDeclaration* InspectorStyleSheet::styleForId(const InspectorCSSId& id) const
{
CSSStyleRule* rule = ruleForId(id);
if (!rule)
return nullptr;
return &rule->style();
}
void InspectorStyleSheet::fireStyleSheetChanged()
{
if (m_listener)
m_listener->styleSheetChanged(this);
}
RefPtr<InspectorStyle> InspectorStyleSheet::inspectorStyleForId(const InspectorCSSId& id)
{
CSSStyleDeclaration* style = styleForId(id);
if (!style)
return nullptr;
return InspectorStyle::create(id, *style, this);
}
InspectorCSSId InspectorStyleSheet::ruleOrStyleId(CSSStyleDeclaration* style) const
{
unsigned index = ruleIndexByStyle(style);
if (index != UINT_MAX)
return InspectorCSSId(id(), index);
return InspectorCSSId();
}
Document* InspectorStyleSheet::ownerDocument() const
{
return m_pageStyleSheet->ownerDocument();
}
RefPtr<CSSRuleSourceData> InspectorStyleSheet::ruleSourceDataFor(CSSStyleDeclaration* style) const
{
return m_parsedStyleSheet->ruleSourceDataAt(ruleIndexByStyle(style));
}
Vector<size_t> InspectorStyleSheet::lineEndings() const
{
if (!m_parsedStyleSheet->hasText())
return { };
return ContentSearchUtilities::lineEndings(m_parsedStyleSheet->text());
}
unsigned InspectorStyleSheet::ruleIndexByStyle(CSSStyleDeclaration* pageStyle) const
{
ensureFlatRules();
unsigned index = 0;
for (auto& rule : m_flatRules) {
if (&rule->style() == pageStyle)
return index;
++index;
}
return UINT_MAX;
}
bool InspectorStyleSheet::styleSheetMutated() const
{
return m_pageStyleSheet && m_pageStyleSheet->hadRulesMutation();
}
bool InspectorStyleSheet::ensureParsedDataReady()
{
bool allowParsedData = m_origin == Inspector::Protocol::CSS::StyleSheetOrigin::Inspector || !styleSheetMutated();
return allowParsedData && ensureText() && ensureSourceData();
}
bool InspectorStyleSheet::ensureText() const
{
if (!m_parsedStyleSheet)
return false;
if (m_parsedStyleSheet->hasText())
return true;
String text;
bool success = originalStyleSheetText(&text);
if (success)
m_parsedStyleSheet->setText(text);
// No need to clear m_flatRules here - it's empty.
return success;
}
bool InspectorStyleSheet::ensureSourceData()
{
if (m_parsedStyleSheet->hasSourceData())
return true;
if (!m_parsedStyleSheet->hasText())
return false;
auto newStyleSheet = StyleSheetContents::create();
auto ruleSourceDataResult = makeUnique<RuleSourceDataList>();
CSSParserContext context(parserContextForDocument(m_pageStyleSheet->ownerDocument()));
StyleSheetHandler handler(m_parsedStyleSheet->text(), m_pageStyleSheet->ownerDocument(), ruleSourceDataResult.get());
CSSParser::parseSheetForInspector(context, newStyleSheet.ptr(), m_parsedStyleSheet->text(), handler);
m_parsedStyleSheet->setSourceData(WTFMove(ruleSourceDataResult));
return m_parsedStyleSheet->hasSourceData();
}
void InspectorStyleSheet::ensureFlatRules() const
{
// We are fine with redoing this for empty stylesheets as this will run fast.
if (m_flatRules.isEmpty())
collectFlatRules(asCSSRuleList(pageStyleSheet()), &m_flatRules);
}
ExceptionOr<void> InspectorStyleSheet::setStyleText(CSSStyleDeclaration* style, const String& text)
{
if (!m_pageStyleSheet)
return Exception { NotFoundError };
if (!ensureParsedDataReady())
return Exception { NotFoundError };
String patchedStyleSheetText;
bool success = styleSheetTextWithChangedStyle(style, text, &patchedStyleSheetText);
if (!success)
return Exception { NotFoundError };
InspectorCSSId id = ruleOrStyleId(style);
if (id.isEmpty())
return Exception { NotFoundError };
auto setCssTextResult = style->setCssText(text);
if (setCssTextResult.hasException())
return setCssTextResult.releaseException();
m_parsedStyleSheet->setText(patchedStyleSheetText);
return { };
}
bool InspectorStyleSheet::styleSheetTextWithChangedStyle(CSSStyleDeclaration* style, const String& newStyleText, String* result)
{
if (!style)
return false;
if (!ensureParsedDataReady())
return false;
RefPtr<CSSRuleSourceData> sourceData = ruleSourceDataFor(style);
unsigned bodyStart = sourceData->ruleBodyRange.start;
unsigned bodyEnd = sourceData->ruleBodyRange.end;
ASSERT(bodyStart <= bodyEnd);
String text = m_parsedStyleSheet->text();
ASSERT_WITH_SECURITY_IMPLICATION(bodyEnd <= text.length()); // bodyEnd is exclusive
text.replace(bodyStart, bodyEnd - bodyStart, newStyleText);
*result = text;
return true;
}
InspectorCSSId InspectorStyleSheet::ruleId(CSSStyleRule* rule) const
{
return ruleOrStyleId(&rule->style());
}
bool InspectorStyleSheet::originalStyleSheetText(String* result) const
{
if (!m_pageStyleSheet || m_origin == Inspector::Protocol::CSS::StyleSheetOrigin::UserAgent)
return false;
return inlineStyleSheetText(result) || resourceStyleSheetText(result) || extensionStyleSheetText(result);
}
bool InspectorStyleSheet::resourceStyleSheetText(String* result) const
{
if (!ownerDocument() || !ownerDocument()->frame())
return false;
String error;
bool base64Encoded;
InspectorPageAgent::resourceContent(error, ownerDocument()->frame(), URL({ }, m_pageStyleSheet->href()), result, &base64Encoded);
return error.isEmpty() && !base64Encoded;
}
bool InspectorStyleSheet::inlineStyleSheetText(String* result) const
{
auto* ownerNode = m_pageStyleSheet->ownerNode();
if (!is<Element>(ownerNode))
return false;
auto& ownerElement = downcast<Element>(*ownerNode);
if (!is<HTMLStyleElement>(ownerElement) && !is<SVGStyleElement>(ownerElement))
return false;
*result = ownerElement.textContent();
return true;
}
bool InspectorStyleSheet::extensionStyleSheetText(String* result) const
{
if (!ownerDocument())
return false;
auto content = ownerDocument()->extensionStyleSheets().contentForInjectedStyleSheet(m_pageStyleSheet);
if (content.isEmpty())
return false;
*result = content;
return true;
}
Ref<JSON::ArrayOf<Inspector::Protocol::CSS::CSSRule>> InspectorStyleSheet::buildArrayForRuleList(CSSRuleList* ruleList)
{
auto result = JSON::ArrayOf<Inspector::Protocol::CSS::CSSRule>::create();
if (!ruleList)
return result;
RefPtr<CSSRuleList> refRuleList = ruleList;
CSSStyleRuleVector rules;
collectFlatRules(WTFMove(refRuleList), &rules);
for (auto& rule : rules)
result->addItem(buildObjectForRule(rule.get(), nullptr));
return result;
}
void InspectorStyleSheet::collectFlatRules(RefPtr<CSSRuleList>&& ruleList, CSSStyleRuleVector* result)
{
if (!ruleList)
return;
for (unsigned i = 0, size = ruleList->length(); i < size; ++i) {
CSSRule* rule = ruleList->item(i);
CSSStyleRule* styleRule = InspectorCSSAgent::asCSSStyleRule(*rule);
if (styleRule)
result->append(styleRule);
else {
RefPtr<CSSRuleList> childRuleList = asCSSRuleList(rule);
if (childRuleList)
collectFlatRules(WTFMove(childRuleList), result);
}
}
}
Ref<InspectorStyleSheetForInlineStyle> InspectorStyleSheetForInlineStyle::create(InspectorPageAgent* pageAgent, const String& id, Ref<StyledElement>&& element, Inspector::Protocol::CSS::StyleSheetOrigin origin, Listener* listener)
{
return adoptRef(*new InspectorStyleSheetForInlineStyle(pageAgent, id, WTFMove(element), origin, listener));
}
InspectorStyleSheetForInlineStyle::InspectorStyleSheetForInlineStyle(InspectorPageAgent* pageAgent, const String& id, Ref<StyledElement>&& element, Inspector::Protocol::CSS::StyleSheetOrigin origin, Listener* listener)
: InspectorStyleSheet(pageAgent, id, nullptr, origin, String(), listener)
, m_element(WTFMove(element))
, m_ruleSourceData(nullptr)
, m_isStyleTextValid(false)
{
m_inspectorStyle = InspectorStyle::create(InspectorCSSId(id, 0), inlineStyle(), this);
m_styleText = m_element->getAttribute("style").string();
}
void InspectorStyleSheetForInlineStyle::didModifyElementAttribute()
{
m_isStyleTextValid = false;
if (&m_element->cssomStyle() != &m_inspectorStyle->cssStyle())
m_inspectorStyle = InspectorStyle::create(InspectorCSSId(id(), 0), inlineStyle(), this);
m_ruleSourceData = nullptr;
}
ExceptionOr<String> InspectorStyleSheetForInlineStyle::text() const
{
if (!m_isStyleTextValid) {
m_styleText = elementStyleText();
m_isStyleTextValid = true;
}
return String { m_styleText };
}
ExceptionOr<void> InspectorStyleSheetForInlineStyle::setStyleText(CSSStyleDeclaration* style, const String& text)
{
ASSERT_UNUSED(style, style == &inlineStyle());
{
InspectorCSSAgent::InlineStyleOverrideScope overrideScope(m_element->document());
m_element->setAttribute(HTMLNames::styleAttr, text);
}
m_styleText = text;
m_isStyleTextValid = true;
m_ruleSourceData = nullptr;
return { };
}
Vector<size_t> InspectorStyleSheetForInlineStyle::lineEndings() const
{
return ContentSearchUtilities::lineEndings(elementStyleText());
}
Document* InspectorStyleSheetForInlineStyle::ownerDocument() const
{
return &m_element->document();
}
bool InspectorStyleSheetForInlineStyle::ensureParsedDataReady()
{
// The "style" property value can get changed indirectly, e.g. via element.style.borderWidth = "2px".
const String& currentStyleText = elementStyleText();
if (m_styleText != currentStyleText) {
m_ruleSourceData = nullptr;
m_styleText = currentStyleText;
m_isStyleTextValid = true;
}
if (m_ruleSourceData)
return true;
m_ruleSourceData = ruleSourceData();
return true;
}
RefPtr<InspectorStyle> InspectorStyleSheetForInlineStyle::inspectorStyleForId(const InspectorCSSId& id)
{
ASSERT_UNUSED(id, !id.ordinal());
return m_inspectorStyle.copyRef();
}
CSSStyleDeclaration& InspectorStyleSheetForInlineStyle::inlineStyle() const
{
return m_element->cssomStyle();
}
const String& InspectorStyleSheetForInlineStyle::elementStyleText() const
{
return m_element->getAttribute("style").string();
}
Ref<CSSRuleSourceData> InspectorStyleSheetForInlineStyle::ruleSourceData() const
{
if (m_styleText.isEmpty()) {
auto result = CSSRuleSourceData::create(StyleRuleType::Style);
result->ruleBodyRange.start = 0;
result->ruleBodyRange.end = 0;
return result;
}
CSSParserContext context(parserContextForDocument(&m_element->document()));
RuleSourceDataList ruleSourceDataResult;
StyleSheetHandler handler(m_styleText, &m_element->document(), &ruleSourceDataResult);
CSSParser::parseDeclarationForInspector(context, m_styleText, handler);
return WTFMove(ruleSourceDataResult.first());
}
} // namespace WebCore