зеркало из https://github.com/mozilla/gecko-dev.git
2007 строки
74 KiB
C++
2007 строки
74 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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/*
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* representation of a declaration block (or style attribute) in a CSS
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* stylesheet
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*/
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#include "mozilla/css/Declaration.h"
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#include "mozilla/ArrayUtils.h"
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#include "mozilla/MemoryReporting.h"
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#include "mozilla/ServoStyleSet.h"
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#include "mozilla/css/Rule.h"
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#include "nsPrintfCString.h"
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#include "gfxFontConstants.h"
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#include "nsStyleUtil.h"
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namespace mozilla {
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namespace css {
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NS_IMPL_QUERY_INTERFACE(ImportantStyleData, nsIStyleRule)
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NS_IMPL_ADDREF_USING_AGGREGATOR(ImportantStyleData, Declaration())
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NS_IMPL_RELEASE_USING_AGGREGATOR(ImportantStyleData, Declaration())
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/* virtual */ void
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ImportantStyleData::MapRuleInfoInto(nsRuleData* aRuleData)
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{
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Declaration()->MapImportantRuleInfoInto(aRuleData);
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}
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/* virtual */ bool
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ImportantStyleData::MightMapInheritedStyleData()
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{
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return Declaration()->MapsImportantInheritedStyleData();
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}
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/* virtual */ bool
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ImportantStyleData::GetDiscretelyAnimatedCSSValue(nsCSSPropertyID aProperty,
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nsCSSValue* aValue)
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{
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return Declaration()->GetDiscretelyAnimatedCSSValue(aProperty, aValue);
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}
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#ifdef DEBUG
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/* virtual */ void
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ImportantStyleData::List(FILE* out, int32_t aIndent) const
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{
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// Indent
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nsAutoCString str;
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for (int32_t index = aIndent; --index >= 0; ) {
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str.AppendLiteral(" ");
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}
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str.AppendLiteral("! important rule\n");
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fprintf_stderr(out, "%s", str.get());
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}
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#endif
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Declaration::Declaration(const Declaration& aCopy)
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: DeclarationBlock(aCopy),
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mOrder(aCopy.mOrder),
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mVariableOrder(aCopy.mVariableOrder),
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mData(aCopy.mData ? aCopy.mData->Clone() : nullptr),
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mImportantData(aCopy.mImportantData ?
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aCopy.mImportantData->Clone() : nullptr),
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mVariables(aCopy.mVariables ?
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new CSSVariableDeclarations(*aCopy.mVariables) :
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nullptr),
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mImportantVariables(aCopy.mImportantVariables ?
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new CSSVariableDeclarations(*aCopy.mImportantVariables) :
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nullptr)
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{
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}
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Declaration::~Declaration()
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{
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}
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NS_INTERFACE_MAP_BEGIN(Declaration)
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if (aIID.Equals(NS_GET_IID(mozilla::css::Declaration))) {
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*aInstancePtr = this;
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NS_ADDREF_THIS();
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return NS_OK;
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}
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else
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NS_INTERFACE_MAP_ENTRY(nsIStyleRule)
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NS_INTERFACE_MAP_ENTRY_AMBIGUOUS(nsISupports, nsIStyleRule)
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NS_INTERFACE_MAP_END
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NS_IMPL_ADDREF(Declaration)
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NS_IMPL_RELEASE(Declaration)
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/* virtual */ void
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Declaration::MapRuleInfoInto(nsRuleData* aRuleData)
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{
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MOZ_ASSERT(mData, "must call only while compressed");
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mData->MapRuleInfoInto(aRuleData);
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if (mVariables) {
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mVariables->MapRuleInfoInto(aRuleData);
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}
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}
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/* virtual */ bool
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Declaration::MightMapInheritedStyleData()
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{
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MOZ_ASSERT(mData, "must call only while compressed");
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if (mVariables && mVariables->Count() != 0) {
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return true;
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}
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return mData->HasInheritedStyleData();
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}
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/* virtual */ bool
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Declaration::GetDiscretelyAnimatedCSSValue(nsCSSPropertyID aProperty,
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nsCSSValue* aValue)
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{
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nsCSSCompressedDataBlock* data = GetPropertyIsImportantByID(aProperty)
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? mImportantData : mData;
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const nsCSSValue* value = data->ValueFor(aProperty);
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if (!value) {
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return false;
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}
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*aValue = *value;
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return true;
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}
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bool
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Declaration::MapsImportantInheritedStyleData() const
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{
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MOZ_ASSERT(mData, "must call only while compressed");
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MOZ_ASSERT(HasImportantData(), "must only be called for Declarations with "
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"important data");
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if (mImportantVariables && mImportantVariables->Count() != 0) {
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return true;
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}
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return mImportantData ? mImportantData->HasInheritedStyleData() : false;
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}
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void
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Declaration::ValueAppended(nsCSSPropertyID aProperty)
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{
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MOZ_ASSERT(!mData && !mImportantData,
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"should only be called while expanded");
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MOZ_ASSERT(!nsCSSProps::IsShorthand(aProperty),
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"shorthands forbidden");
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// order IS important for CSS, so remove and add to the end
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mOrder.RemoveElement(static_cast<uint32_t>(aProperty));
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mOrder.AppendElement(static_cast<uint32_t>(aProperty));
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}
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template<typename PropFunc, typename CustomPropFunc>
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inline void
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DispatchPropertyOperation(const nsAString& aProperty,
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PropFunc aPropFunc, CustomPropFunc aCustomPropFunc)
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{
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nsCSSPropertyID propID =
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nsCSSProps::LookupProperty(aProperty, CSSEnabledState::eForAllContent);
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if (propID != eCSSProperty_UNKNOWN) {
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if (propID != eCSSPropertyExtra_variable) {
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aPropFunc(propID);
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} else {
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aCustomPropFunc(Substring(aProperty, CSS_CUSTOM_NAME_PREFIX_LENGTH));
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}
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}
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}
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void
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Declaration::GetPropertyValue(const nsAString& aProperty,
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nsAString& aValue) const
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{
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DispatchPropertyOperation(aProperty,
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[&](nsCSSPropertyID propID) { GetPropertyValueByID(propID, aValue); },
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[&](const nsAString& name) { GetVariableValue(name, aValue); });
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}
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void
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Declaration::GetPropertyValueByID(nsCSSPropertyID aPropID,
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nsAString& aValue) const
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{
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GetPropertyValueInternal(aPropID, aValue, nsCSSValue::eNormalized);
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}
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void
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Declaration::GetAuthoredPropertyValue(const nsAString& aProperty,
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nsAString& aValue) const
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{
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DispatchPropertyOperation(aProperty,
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[&](nsCSSPropertyID propID) {
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GetPropertyValueInternal(propID, aValue, nsCSSValue::eAuthorSpecified);
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},
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[&](const nsAString& name) { GetVariableValue(name, aValue); });
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}
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bool
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Declaration::GetPropertyIsImportant(const nsAString& aProperty) const
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{
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bool r = false;
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DispatchPropertyOperation(aProperty,
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[&](nsCSSPropertyID propID) { r = GetPropertyIsImportantByID(propID); },
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[&](const nsAString& name) { r = GetVariableIsImportant(name); });
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return r;
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}
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void
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Declaration::RemoveProperty(const nsAString& aProperty)
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{
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DispatchPropertyOperation(aProperty,
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[&](nsCSSPropertyID propID) { RemovePropertyByID(propID); },
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[&](const nsAString& name) { RemoveVariable(name); });
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}
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void
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Declaration::RemovePropertyByID(nsCSSPropertyID aProperty)
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{
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MOZ_ASSERT(0 <= aProperty && aProperty < eCSSProperty_COUNT);
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nsCSSExpandedDataBlock data;
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ExpandTo(&data);
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MOZ_ASSERT(!mData && !mImportantData, "Expand didn't null things out");
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if (nsCSSProps::IsShorthand(aProperty)) {
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CSSPROPS_FOR_SHORTHAND_SUBPROPERTIES(p, aProperty,
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CSSEnabledState::eForAllContent) {
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data.ClearLonghandProperty(*p);
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mOrder.RemoveElement(static_cast<uint32_t>(*p));
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}
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} else {
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data.ClearLonghandProperty(aProperty);
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mOrder.RemoveElement(static_cast<uint32_t>(aProperty));
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}
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CompressFrom(&data);
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}
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bool
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Declaration::HasProperty(nsCSSPropertyID aProperty) const
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{
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MOZ_ASSERT(0 <= aProperty && aProperty < eCSSProperty_COUNT_no_shorthands,
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"property ID out of range");
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nsCSSCompressedDataBlock *data = GetPropertyIsImportantByID(aProperty)
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? mImportantData : mData;
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const nsCSSValue *val = data->ValueFor(aProperty);
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return !!val;
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}
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bool
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Declaration::AppendValueToString(nsCSSPropertyID aProperty,
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nsAString& aResult,
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nsCSSValue::Serialization aSerialization,
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bool* aIsTokenStream) const
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{
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MOZ_ASSERT(0 <= aProperty && aProperty < eCSSProperty_COUNT_no_shorthands,
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"property ID out of range");
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nsCSSCompressedDataBlock *data = GetPropertyIsImportantByID(aProperty)
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? mImportantData : mData;
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const nsCSSValue *val = data->ValueFor(aProperty);
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if (!val) {
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return false;
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}
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if (aIsTokenStream) {
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*aIsTokenStream = val->GetUnit() == eCSSUnit_TokenStream;
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}
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val->AppendToString(aProperty, aResult, aSerialization);
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return true;
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}
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static void
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AppendSingleImageLayerPositionValue(const nsCSSValue& aPositionX,
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const nsCSSValue& aPositionY,
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const nsCSSPropertyID aTable[],
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nsAString& aValue,
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nsCSSValue::Serialization aSerialization)
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{
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// We need to make sure that we don't serialize to an invalid 3-value form.
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// The 3-value form is only valid if both edges are present.
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const nsCSSValue &xEdge = aPositionX.GetArrayValue()->Item(0);
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const nsCSSValue &xOffset = aPositionX.GetArrayValue()->Item(1);
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const nsCSSValue &yEdge = aPositionY.GetArrayValue()->Item(0);
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const nsCSSValue &yOffset = aPositionY.GetArrayValue()->Item(1);
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bool xHasEdge = (eCSSUnit_Enumerated == xEdge.GetUnit());
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bool xHasBoth = xHasEdge && (eCSSUnit_Null != xOffset.GetUnit());
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bool yHasEdge = (eCSSUnit_Enumerated == yEdge.GetUnit());
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bool yHasBoth = yHasEdge && (eCSSUnit_Null != yOffset.GetUnit());
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if (yHasBoth && !xHasEdge) {
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// Output 4-value form by adding the x edge.
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aValue.AppendLiteral("left ");
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}
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aPositionX.AppendToString(aTable[nsStyleImageLayers::positionX],
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aValue, aSerialization);
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aValue.Append(char16_t(' '));
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if (xHasBoth && !yHasEdge) {
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// Output 4-value form by adding the y edge.
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aValue.AppendLiteral("top ");
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}
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aPositionY.AppendToString(aTable[nsStyleImageLayers::positionY],
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aValue, aSerialization);
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}
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void
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Declaration::GetImageLayerValue(
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nsCSSCompressedDataBlock *data,
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nsAString& aValue,
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nsCSSValue::Serialization aSerialization,
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const nsCSSPropertyID aTable[]) const
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{
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// We know from our caller that all subproperties were specified.
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// However, we still can't represent that in the shorthand unless
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// they're all lists of the same length. So if they're different
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// lengths, we need to bail out.
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// We also need to bail out if an item has background-clip and
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// background-origin that are different and not the default
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// values. (We omit them if they're both default.)
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// Common CSS properties for both background & mask layer.
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const nsCSSValueList *image =
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data->ValueFor(aTable[nsStyleImageLayers::image])->GetListValue();
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const nsCSSValuePairList *repeat =
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data->ValueFor(aTable[nsStyleImageLayers::repeat])->GetPairListValue();
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const nsCSSValueList *positionX =
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data->ValueFor(aTable[nsStyleImageLayers::positionX])->GetListValue();
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const nsCSSValueList *positionY =
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data->ValueFor(aTable[nsStyleImageLayers::positionY])->GetListValue();
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const nsCSSValueList *clip =
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data->ValueFor(aTable[nsStyleImageLayers::clip])->GetListValue();
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const nsCSSValueList *origin =
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data->ValueFor(aTable[nsStyleImageLayers::origin])->GetListValue();
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const nsCSSValuePairList *size =
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data->ValueFor(aTable[nsStyleImageLayers::size])->GetPairListValue();
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// Background layer property.
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const nsCSSValueList *attachment =
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(aTable[nsStyleImageLayers::attachment] == eCSSProperty_UNKNOWN)?
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nullptr :
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data->ValueFor(aTable[nsStyleImageLayers::attachment])->GetListValue();
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// Mask layer properties.
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const nsCSSValueList *composite =
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(aTable[nsStyleImageLayers::composite] == eCSSProperty_UNKNOWN)?
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nullptr :
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data->ValueFor(aTable[nsStyleImageLayers::composite])->GetListValue();
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const nsCSSValueList *mode =
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(aTable[nsStyleImageLayers::maskMode] == eCSSProperty_UNKNOWN)?
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nullptr :
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data->ValueFor(aTable[nsStyleImageLayers::maskMode])->GetListValue();
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for (;;) {
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// Serialize background-color at the beginning of the last item.
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if (!image->mNext) {
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if (aTable[nsStyleImageLayers::color] != eCSSProperty_UNKNOWN) {
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AppendValueToString(aTable[nsStyleImageLayers::color], aValue,
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aSerialization);
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aValue.Append(char16_t(' '));
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}
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}
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image->mValue.AppendToString(aTable[nsStyleImageLayers::image], aValue,
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aSerialization);
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aValue.Append(char16_t(' '));
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repeat->mXValue.AppendToString(aTable[nsStyleImageLayers::repeat], aValue,
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aSerialization);
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if (repeat->mYValue.GetUnit() != eCSSUnit_Null) {
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repeat->mYValue.AppendToString(aTable[nsStyleImageLayers::repeat], aValue,
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aSerialization);
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}
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if (attachment) {
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aValue.Append(char16_t(' '));
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attachment->mValue.AppendToString(aTable[nsStyleImageLayers::attachment],
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aValue, aSerialization);
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}
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aValue.Append(char16_t(' '));
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AppendSingleImageLayerPositionValue(positionX->mValue, positionY->mValue,
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aTable, aValue, aSerialization);
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if (size->mXValue.GetUnit() != eCSSUnit_Auto ||
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size->mYValue.GetUnit() != eCSSUnit_Auto) {
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aValue.Append(char16_t(' '));
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aValue.Append(char16_t('/'));
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aValue.Append(char16_t(' '));
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size->mXValue.AppendToString(aTable[nsStyleImageLayers::size], aValue,
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aSerialization);
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aValue.Append(char16_t(' '));
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size->mYValue.AppendToString(aTable[nsStyleImageLayers::size], aValue,
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aSerialization);
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}
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MOZ_ASSERT(clip->mValue.GetUnit() == eCSSUnit_Enumerated &&
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origin->mValue.GetUnit() == eCSSUnit_Enumerated,
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"should not have inherit/initial within list");
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StyleGeometryBox originDefaultValue =
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(aTable == nsStyleImageLayers::kBackgroundLayerTable)
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? StyleGeometryBox::PaddingBox : StyleGeometryBox::BorderBox;
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if (static_cast<StyleGeometryBox>(clip->mValue.GetIntValue()) !=
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StyleGeometryBox::BorderBox ||
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static_cast<StyleGeometryBox>(origin->mValue.GetIntValue()) !=
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originDefaultValue) {
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#ifdef DEBUG
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const nsCSSProps::KTableEntry* originTable = nsCSSProps::kKeywordTableTable[aTable[nsStyleImageLayers::origin]];
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const nsCSSProps::KTableEntry* clipTable = nsCSSProps::kKeywordTableTable[aTable[nsStyleImageLayers::clip]];
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for (size_t i = 0; originTable[i].mValue != -1; i++) {
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// For each keyword & value in kOriginKTable, ensure that
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// kBackgroundKTable has a matching entry at the same position.
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MOZ_ASSERT(originTable[i].mKeyword == clipTable[i].mKeyword);
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MOZ_ASSERT(originTable[i].mValue == clipTable[i].mValue);
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}
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#endif
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aValue.Append(char16_t(' '));
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origin->mValue.AppendToString(aTable[nsStyleImageLayers::origin], aValue,
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aSerialization);
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if (clip->mValue != origin->mValue) {
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aValue.Append(char16_t(' '));
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clip->mValue.AppendToString(aTable[nsStyleImageLayers::clip], aValue,
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aSerialization);
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}
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}
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if (composite) {
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aValue.Append(char16_t(' '));
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composite->mValue.AppendToString(aTable[nsStyleImageLayers::composite],
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aValue, aSerialization);
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}
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if (mode) {
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aValue.Append(char16_t(' '));
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mode->mValue.AppendToString(aTable[nsStyleImageLayers::maskMode],
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aValue, aSerialization);
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}
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image = image->mNext;
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repeat = repeat->mNext;
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positionX = positionX->mNext;
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positionY = positionY->mNext;
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clip = clip->mNext;
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origin = origin->mNext;
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size = size->mNext;
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attachment = attachment ? attachment->mNext : nullptr;
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composite = composite ? composite->mNext : nullptr;
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mode = mode ? mode->mNext : nullptr;
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if (!image) {
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// This layer is an background layer
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if (aTable == nsStyleImageLayers::kBackgroundLayerTable) {
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if (repeat || positionX || positionY || clip || origin || size ||
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attachment) {
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// Uneven length lists, so can't be serialized as shorthand.
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aValue.Truncate();
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return;
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}
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// This layer is an mask layer
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} else {
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#ifdef MOZ_ENABLE_MASK_AS_SHORTHAND
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MOZ_ASSERT(aTable == nsStyleImageLayers::kMaskLayerTable);
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#else
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MOZ_ASSERT_UNREACHABLE("Should never get here when mask-as-shorthand is disable");
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#endif
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if (repeat || positionX || positionY || clip || origin || size ||
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composite || mode) {
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// Uneven length lists, so can't be serialized as shorthand.
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aValue.Truncate();
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return;
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}
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}
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break;
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}
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// This layer is an background layer
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if (aTable == nsStyleImageLayers::kBackgroundLayerTable) {
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if (!repeat || !positionX || !positionY || !clip || !origin || !size ||
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!attachment) {
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// Uneven length lists, so can't be serialized as shorthand.
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aValue.Truncate();
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return;
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}
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// This layer is an mask layer
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} else {
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#ifdef MOZ_ENABLE_MASK_AS_SHORTHAND
|
|
MOZ_ASSERT(aTable == nsStyleImageLayers::kMaskLayerTable);
|
|
#else
|
|
MOZ_ASSERT_UNREACHABLE("Should never get here when mask-as-shorthand is disable");
|
|
#endif
|
|
if (!repeat || !positionX || !positionY || !clip || !origin || !size ||
|
|
!composite || !mode) {
|
|
// Uneven length lists, so can't be serialized as shorthand.
|
|
aValue.Truncate();
|
|
return;
|
|
}
|
|
}
|
|
aValue.Append(char16_t(','));
|
|
aValue.Append(char16_t(' '));
|
|
}
|
|
}
|
|
|
|
void
|
|
Declaration::GetImageLayerPositionValue(
|
|
nsCSSCompressedDataBlock *data,
|
|
nsAString& aValue,
|
|
nsCSSValue::Serialization aSerialization,
|
|
const nsCSSPropertyID aTable[]) const
|
|
{
|
|
// We know from above that all subproperties were specified.
|
|
// However, we still can't represent that in the shorthand unless
|
|
// they're all lists of the same length. So if they're different
|
|
// lengths, we need to bail out.
|
|
const nsCSSValueList *positionX =
|
|
data->ValueFor(aTable[nsStyleImageLayers::positionX])->GetListValue();
|
|
const nsCSSValueList *positionY =
|
|
data->ValueFor(aTable[nsStyleImageLayers::positionY])->GetListValue();
|
|
for (;;) {
|
|
AppendSingleImageLayerPositionValue(positionX->mValue, positionY->mValue,
|
|
aTable, aValue, aSerialization);
|
|
positionX = positionX->mNext;
|
|
positionY = positionY->mNext;
|
|
|
|
if (!positionX || !positionY) {
|
|
if (positionX || positionY) {
|
|
// Uneven length lists, so can't be serialized as shorthand.
|
|
aValue.Truncate();
|
|
}
|
|
return;
|
|
}
|
|
aValue.Append(char16_t(','));
|
|
aValue.Append(char16_t(' '));
|
|
}
|
|
}
|
|
|
|
void
|
|
Declaration::GetPropertyValueInternal(
|
|
nsCSSPropertyID aProperty, nsAString& aValue,
|
|
nsCSSValue::Serialization aSerialization, bool* aIsTokenStream) const
|
|
{
|
|
aValue.Truncate(0);
|
|
if (aIsTokenStream) {
|
|
*aIsTokenStream = false;
|
|
}
|
|
|
|
// simple properties are easy.
|
|
if (!nsCSSProps::IsShorthand(aProperty)) {
|
|
AppendValueToString(aProperty, aValue, aSerialization, aIsTokenStream);
|
|
return;
|
|
}
|
|
|
|
// DOM Level 2 Style says (when describing CSS2Properties, although
|
|
// not CSSStyleDeclaration.getPropertyValue):
|
|
// However, if there is no shorthand declaration that could be added
|
|
// to the ruleset without changing in any way the rules already
|
|
// declared in the ruleset (i.e., by adding longhand rules that were
|
|
// previously not declared in the ruleset), then the empty string
|
|
// should be returned for the shorthand property.
|
|
// This means we need to check a number of cases:
|
|
// (1) Since a shorthand sets all sub-properties, if some of its
|
|
// subproperties were not specified, we must return the empty
|
|
// string.
|
|
// (2) Since 'inherit', 'initial' and 'unset' can only be specified
|
|
// as the values for entire properties, we need to return the
|
|
// empty string if some but not all of the subproperties have one
|
|
// of those values.
|
|
// (3) Since a single value only makes sense with or without
|
|
// !important, we return the empty string if some values are
|
|
// !important and some are not.
|
|
// Since we're doing this check for 'inherit' and 'initial' up front,
|
|
// we can also simplify the property serialization code by serializing
|
|
// those values up front as well.
|
|
//
|
|
// Additionally, if a shorthand property was set using a value with a
|
|
// variable reference and none of its component longhand properties were
|
|
// then overridden on the declaration, we return the token stream
|
|
// assigned to the shorthand.
|
|
const nsCSSValue* tokenStream = nullptr;
|
|
uint32_t totalCount = 0, importantCount = 0,
|
|
initialCount = 0, inheritCount = 0, unsetCount = 0,
|
|
matchingTokenStreamCount = 0, nonMatchingTokenStreamCount = 0;
|
|
CSSPROPS_FOR_SHORTHAND_SUBPROPERTIES(p, aProperty,
|
|
CSSEnabledState::eForAllContent) {
|
|
if (*p == eCSSProperty__x_system_font) {
|
|
// The system-font subproperty doesn't count.
|
|
continue;
|
|
}
|
|
++totalCount;
|
|
const nsCSSValue *val = mData->ValueFor(*p);
|
|
MOZ_ASSERT(!val || !mImportantData || !mImportantData->ValueFor(*p),
|
|
"can't be in both blocks");
|
|
if (!val && mImportantData) {
|
|
++importantCount;
|
|
val = mImportantData->ValueFor(*p);
|
|
}
|
|
if (!val) {
|
|
// Case (1) above: some subproperties not specified.
|
|
return;
|
|
}
|
|
if (val->GetUnit() == eCSSUnit_Inherit) {
|
|
++inheritCount;
|
|
} else if (val->GetUnit() == eCSSUnit_Initial) {
|
|
++initialCount;
|
|
} else if (val->GetUnit() == eCSSUnit_Unset) {
|
|
++unsetCount;
|
|
} else if (val->GetUnit() == eCSSUnit_TokenStream) {
|
|
if (val->GetTokenStreamValue()->mShorthandPropertyID == aProperty) {
|
|
tokenStream = val;
|
|
++matchingTokenStreamCount;
|
|
} else {
|
|
++nonMatchingTokenStreamCount;
|
|
}
|
|
}
|
|
}
|
|
if (importantCount != 0 && importantCount != totalCount) {
|
|
// Case (3), no consistent importance.
|
|
return;
|
|
}
|
|
if (initialCount == totalCount) {
|
|
// Simplify serialization below by serializing initial up-front.
|
|
nsCSSValue(eCSSUnit_Initial).AppendToString(eCSSProperty_UNKNOWN, aValue,
|
|
nsCSSValue::eNormalized);
|
|
return;
|
|
}
|
|
if (inheritCount == totalCount) {
|
|
// Simplify serialization below by serializing inherit up-front.
|
|
nsCSSValue(eCSSUnit_Inherit).AppendToString(eCSSProperty_UNKNOWN, aValue,
|
|
nsCSSValue::eNormalized);
|
|
return;
|
|
}
|
|
if (unsetCount == totalCount) {
|
|
// Simplify serialization below by serializing unset up-front.
|
|
nsCSSValue(eCSSUnit_Unset).AppendToString(eCSSProperty_UNKNOWN, aValue,
|
|
nsCSSValue::eNormalized);
|
|
return;
|
|
}
|
|
if (initialCount != 0 || inheritCount != 0 ||
|
|
unsetCount != 0 || nonMatchingTokenStreamCount != 0) {
|
|
// Case (2): partially initial, inherit, unset or token stream.
|
|
return;
|
|
}
|
|
if (tokenStream) {
|
|
if (matchingTokenStreamCount == totalCount) {
|
|
// Shorthand was specified using variable references and all of its
|
|
// longhand components were set by the shorthand.
|
|
if (aIsTokenStream) {
|
|
*aIsTokenStream = true;
|
|
}
|
|
aValue.Append(tokenStream->GetTokenStreamValue()->mTokenStream);
|
|
} else {
|
|
// In all other cases, serialize to the empty string.
|
|
}
|
|
return;
|
|
}
|
|
|
|
nsCSSCompressedDataBlock *data = importantCount ? mImportantData : mData;
|
|
switch (aProperty) {
|
|
case eCSSProperty_margin:
|
|
case eCSSProperty_padding:
|
|
case eCSSProperty_border_color:
|
|
case eCSSProperty_border_style:
|
|
case eCSSProperty_border_width: {
|
|
const nsCSSPropertyID* subprops =
|
|
nsCSSProps::SubpropertyEntryFor(aProperty);
|
|
MOZ_ASSERT(nsCSSProps::GetStringValue(subprops[0]).Find("-top") !=
|
|
kNotFound, "first subprop must be top");
|
|
MOZ_ASSERT(nsCSSProps::GetStringValue(subprops[1]).Find("-right") !=
|
|
kNotFound, "second subprop must be right");
|
|
MOZ_ASSERT(nsCSSProps::GetStringValue(subprops[2]).Find("-bottom") !=
|
|
kNotFound, "third subprop must be bottom");
|
|
MOZ_ASSERT(nsCSSProps::GetStringValue(subprops[3]).Find("-left") !=
|
|
kNotFound, "fourth subprop must be left");
|
|
const nsCSSValue* vals[4] = {
|
|
data->ValueFor(subprops[0]),
|
|
data->ValueFor(subprops[1]),
|
|
data->ValueFor(subprops[2]),
|
|
data->ValueFor(subprops[3])
|
|
};
|
|
nsCSSValue::AppendSidesShorthandToString(subprops, vals, aValue,
|
|
aSerialization);
|
|
break;
|
|
}
|
|
case eCSSProperty_border_radius:
|
|
case eCSSProperty__moz_outline_radius: {
|
|
const nsCSSPropertyID* subprops =
|
|
nsCSSProps::SubpropertyEntryFor(aProperty);
|
|
const nsCSSValue* vals[4] = {
|
|
data->ValueFor(subprops[0]),
|
|
data->ValueFor(subprops[1]),
|
|
data->ValueFor(subprops[2]),
|
|
data->ValueFor(subprops[3])
|
|
};
|
|
nsCSSValue::AppendBasicShapeRadiusToString(subprops, vals, aValue,
|
|
aSerialization);
|
|
break;
|
|
}
|
|
case eCSSProperty_border_image: {
|
|
// Even though there are some cases where we could omit
|
|
// 'border-image-source' (when it's none), it's probably not a
|
|
// good idea since it's likely to be confusing. It would also
|
|
// require adding the extra check that we serialize *something*.
|
|
AppendValueToString(eCSSProperty_border_image_source, aValue,
|
|
aSerialization);
|
|
|
|
bool sliceDefault = data->HasDefaultBorderImageSlice();
|
|
bool widthDefault = data->HasDefaultBorderImageWidth();
|
|
bool outsetDefault = data->HasDefaultBorderImageOutset();
|
|
|
|
if (!sliceDefault || !widthDefault || !outsetDefault) {
|
|
aValue.Append(char16_t(' '));
|
|
AppendValueToString(eCSSProperty_border_image_slice, aValue,
|
|
aSerialization);
|
|
if (!widthDefault || !outsetDefault) {
|
|
aValue.AppendLiteral(" /");
|
|
if (!widthDefault) {
|
|
aValue.Append(char16_t(' '));
|
|
AppendValueToString(eCSSProperty_border_image_width, aValue,
|
|
aSerialization);
|
|
}
|
|
if (!outsetDefault) {
|
|
aValue.AppendLiteral(" / ");
|
|
AppendValueToString(eCSSProperty_border_image_outset, aValue,
|
|
aSerialization);
|
|
}
|
|
}
|
|
}
|
|
|
|
bool repeatDefault = data->HasDefaultBorderImageRepeat();
|
|
if (!repeatDefault) {
|
|
aValue.Append(char16_t(' '));
|
|
AppendValueToString(eCSSProperty_border_image_repeat, aValue,
|
|
aSerialization);
|
|
}
|
|
break;
|
|
}
|
|
case eCSSProperty_border: {
|
|
// If we have a non-default value for any of the properties that
|
|
// this shorthand sets but cannot specify, we have to return the
|
|
// empty string.
|
|
if (data->ValueFor(eCSSProperty_border_image_source)->GetUnit() !=
|
|
eCSSUnit_None ||
|
|
!data->HasDefaultBorderImageSlice() ||
|
|
!data->HasDefaultBorderImageWidth() ||
|
|
!data->HasDefaultBorderImageOutset() ||
|
|
!data->HasDefaultBorderImageRepeat() ||
|
|
data->ValueFor(eCSSProperty__moz_border_top_colors)->GetUnit() !=
|
|
eCSSUnit_None ||
|
|
data->ValueFor(eCSSProperty__moz_border_right_colors)->GetUnit() !=
|
|
eCSSUnit_None ||
|
|
data->ValueFor(eCSSProperty__moz_border_bottom_colors)->GetUnit() !=
|
|
eCSSUnit_None ||
|
|
data->ValueFor(eCSSProperty__moz_border_left_colors)->GetUnit() !=
|
|
eCSSUnit_None) {
|
|
break;
|
|
}
|
|
|
|
const nsCSSPropertyID* subproptables[3] = {
|
|
nsCSSProps::SubpropertyEntryFor(eCSSProperty_border_color),
|
|
nsCSSProps::SubpropertyEntryFor(eCSSProperty_border_style),
|
|
nsCSSProps::SubpropertyEntryFor(eCSSProperty_border_width)
|
|
};
|
|
bool match = true;
|
|
for (const nsCSSPropertyID** subprops = subproptables,
|
|
**subprops_end = ArrayEnd(subproptables);
|
|
subprops < subprops_end; ++subprops) {
|
|
const nsCSSValue *firstSide = data->ValueFor((*subprops)[0]);
|
|
for (int32_t side = 1; side < 4; ++side) {
|
|
const nsCSSValue *otherSide =
|
|
data->ValueFor((*subprops)[side]);
|
|
if (*firstSide != *otherSide)
|
|
match = false;
|
|
}
|
|
}
|
|
if (!match) {
|
|
// We can't express what we have in the border shorthand
|
|
break;
|
|
}
|
|
// tweak aProperty and fall through
|
|
aProperty = eCSSProperty_border_top;
|
|
MOZ_FALLTHROUGH;
|
|
}
|
|
case eCSSProperty_border_top:
|
|
case eCSSProperty_border_right:
|
|
case eCSSProperty_border_bottom:
|
|
case eCSSProperty_border_left:
|
|
case eCSSProperty_border_inline_start:
|
|
case eCSSProperty_border_inline_end:
|
|
case eCSSProperty_border_block_start:
|
|
case eCSSProperty_border_block_end:
|
|
case eCSSProperty_column_rule:
|
|
case eCSSProperty_outline: {
|
|
const nsCSSPropertyID* subprops =
|
|
nsCSSProps::SubpropertyEntryFor(aProperty);
|
|
MOZ_ASSERT(StringEndsWith(nsCSSProps::GetStringValue(subprops[2]),
|
|
NS_LITERAL_CSTRING("-color")),
|
|
"third subprop must be the color property");
|
|
const nsCSSValue *colorValue = data->ValueFor(subprops[2]);
|
|
bool isCurrentColor =
|
|
colorValue->GetUnit() == eCSSUnit_EnumColor &&
|
|
colorValue->GetIntValue() == NS_COLOR_CURRENTCOLOR;
|
|
if (!AppendValueToString(subprops[0], aValue, aSerialization) ||
|
|
!(aValue.Append(char16_t(' ')),
|
|
AppendValueToString(subprops[1], aValue, aSerialization)) ||
|
|
// Don't output a third value when it's currentcolor.
|
|
!(isCurrentColor ||
|
|
(aValue.Append(char16_t(' ')),
|
|
AppendValueToString(subprops[2], aValue, aSerialization)))) {
|
|
aValue.Truncate();
|
|
}
|
|
break;
|
|
}
|
|
case eCSSProperty_background: {
|
|
GetImageLayerValue(data, aValue, aSerialization,
|
|
nsStyleImageLayers::kBackgroundLayerTable);
|
|
break;
|
|
}
|
|
case eCSSProperty_background_position: {
|
|
GetImageLayerPositionValue(data, aValue, aSerialization,
|
|
nsStyleImageLayers::kBackgroundLayerTable);
|
|
break;
|
|
}
|
|
#ifdef MOZ_ENABLE_MASK_AS_SHORTHAND
|
|
case eCSSProperty_mask: {
|
|
GetImageLayerValue(data, aValue, aSerialization,
|
|
nsStyleImageLayers::kMaskLayerTable);
|
|
break;
|
|
}
|
|
case eCSSProperty_mask_position: {
|
|
GetImageLayerPositionValue(data, aValue, aSerialization,
|
|
nsStyleImageLayers::kMaskLayerTable);
|
|
break;
|
|
}
|
|
#endif
|
|
case eCSSProperty_font: {
|
|
// systemFont might not be present; other values are guaranteed to be
|
|
// available based on the shorthand check at the beginning of the
|
|
// function, as long as the prop is enabled
|
|
const nsCSSValue *systemFont =
|
|
data->ValueFor(eCSSProperty__x_system_font);
|
|
const nsCSSValue *style =
|
|
data->ValueFor(eCSSProperty_font_style);
|
|
const nsCSSValue *weight =
|
|
data->ValueFor(eCSSProperty_font_weight);
|
|
const nsCSSValue *size =
|
|
data->ValueFor(eCSSProperty_font_size);
|
|
const nsCSSValue *lh =
|
|
data->ValueFor(eCSSProperty_line_height);
|
|
const nsCSSValue *family =
|
|
data->ValueFor(eCSSProperty_font_family);
|
|
const nsCSSValue *stretch =
|
|
data->ValueFor(eCSSProperty_font_stretch);
|
|
const nsCSSValue *sizeAdjust =
|
|
data->ValueFor(eCSSProperty_font_size_adjust);
|
|
const nsCSSValue *featureSettings =
|
|
data->ValueFor(eCSSProperty_font_feature_settings);
|
|
const nsCSSValue *languageOverride =
|
|
data->ValueFor(eCSSProperty_font_language_override);
|
|
const nsCSSValue *fontKerning =
|
|
data->ValueFor(eCSSProperty_font_kerning);
|
|
const nsCSSValue *fontVariantAlternates =
|
|
data->ValueFor(eCSSProperty_font_variant_alternates);
|
|
const nsCSSValue *fontVariantCaps =
|
|
data->ValueFor(eCSSProperty_font_variant_caps);
|
|
const nsCSSValue *fontVariantEastAsian =
|
|
data->ValueFor(eCSSProperty_font_variant_east_asian);
|
|
const nsCSSValue *fontVariantLigatures =
|
|
data->ValueFor(eCSSProperty_font_variant_ligatures);
|
|
const nsCSSValue *fontVariantNumeric =
|
|
data->ValueFor(eCSSProperty_font_variant_numeric);
|
|
const nsCSSValue *fontVariantPosition =
|
|
data->ValueFor(eCSSProperty_font_variant_position);
|
|
|
|
if (systemFont &&
|
|
systemFont->GetUnit() != eCSSUnit_None &&
|
|
systemFont->GetUnit() != eCSSUnit_Null) {
|
|
if (style->GetUnit() != eCSSUnit_System_Font ||
|
|
weight->GetUnit() != eCSSUnit_System_Font ||
|
|
size->GetUnit() != eCSSUnit_System_Font ||
|
|
lh->GetUnit() != eCSSUnit_System_Font ||
|
|
family->GetUnit() != eCSSUnit_System_Font ||
|
|
stretch->GetUnit() != eCSSUnit_System_Font ||
|
|
sizeAdjust->GetUnit() != eCSSUnit_System_Font ||
|
|
featureSettings->GetUnit() != eCSSUnit_System_Font ||
|
|
languageOverride->GetUnit() != eCSSUnit_System_Font ||
|
|
fontKerning->GetUnit() != eCSSUnit_System_Font ||
|
|
fontVariantAlternates->GetUnit() != eCSSUnit_System_Font ||
|
|
fontVariantCaps->GetUnit() != eCSSUnit_System_Font ||
|
|
fontVariantEastAsian->GetUnit() != eCSSUnit_System_Font ||
|
|
fontVariantLigatures->GetUnit() != eCSSUnit_System_Font ||
|
|
fontVariantNumeric->GetUnit() != eCSSUnit_System_Font ||
|
|
fontVariantPosition->GetUnit() != eCSSUnit_System_Font) {
|
|
// This can't be represented as a shorthand.
|
|
return;
|
|
}
|
|
systemFont->AppendToString(eCSSProperty__x_system_font, aValue,
|
|
aSerialization);
|
|
} else {
|
|
// properties reset by this shorthand property to their
|
|
// initial values but not represented in its syntax
|
|
if (sizeAdjust->GetUnit() != eCSSUnit_None ||
|
|
featureSettings->GetUnit() != eCSSUnit_Normal ||
|
|
languageOverride->GetUnit() != eCSSUnit_Normal ||
|
|
fontKerning->GetIntValue() != NS_FONT_KERNING_AUTO ||
|
|
fontVariantAlternates->GetUnit() != eCSSUnit_Normal ||
|
|
fontVariantEastAsian->GetUnit() != eCSSUnit_Normal ||
|
|
fontVariantLigatures->GetUnit() != eCSSUnit_Normal ||
|
|
fontVariantNumeric->GetUnit() != eCSSUnit_Normal ||
|
|
fontVariantPosition->GetUnit() != eCSSUnit_Normal) {
|
|
return;
|
|
}
|
|
|
|
// only a normal or small-caps values of font-variant-caps can
|
|
// be represented in the font shorthand
|
|
if (fontVariantCaps->GetUnit() != eCSSUnit_Normal &&
|
|
(fontVariantCaps->GetUnit() != eCSSUnit_Enumerated ||
|
|
fontVariantCaps->GetIntValue() != NS_FONT_VARIANT_CAPS_SMALLCAPS)) {
|
|
return;
|
|
}
|
|
|
|
if (style->GetUnit() != eCSSUnit_Enumerated ||
|
|
style->GetIntValue() != NS_FONT_STYLE_NORMAL) {
|
|
style->AppendToString(eCSSProperty_font_style, aValue,
|
|
aSerialization);
|
|
aValue.Append(char16_t(' '));
|
|
}
|
|
if (fontVariantCaps->GetUnit() != eCSSUnit_Normal) {
|
|
fontVariantCaps->AppendToString(eCSSProperty_font_variant_caps, aValue,
|
|
aSerialization);
|
|
aValue.Append(char16_t(' '));
|
|
}
|
|
if (weight->GetUnit() != eCSSUnit_Enumerated ||
|
|
weight->GetIntValue() != NS_FONT_WEIGHT_NORMAL) {
|
|
weight->AppendToString(eCSSProperty_font_weight, aValue,
|
|
aSerialization);
|
|
aValue.Append(char16_t(' '));
|
|
}
|
|
if (stretch->GetUnit() != eCSSUnit_Enumerated ||
|
|
stretch->GetIntValue() != NS_FONT_STRETCH_NORMAL) {
|
|
stretch->AppendToString(eCSSProperty_font_stretch, aValue,
|
|
aSerialization);
|
|
aValue.Append(char16_t(' '));
|
|
}
|
|
size->AppendToString(eCSSProperty_font_size, aValue, aSerialization);
|
|
if (lh->GetUnit() != eCSSUnit_Normal) {
|
|
aValue.Append(char16_t('/'));
|
|
lh->AppendToString(eCSSProperty_line_height, aValue, aSerialization);
|
|
}
|
|
aValue.Append(char16_t(' '));
|
|
family->AppendToString(eCSSProperty_font_family, aValue,
|
|
aSerialization);
|
|
}
|
|
break;
|
|
}
|
|
case eCSSProperty_font_variant: {
|
|
const nsCSSPropertyID *subprops =
|
|
nsCSSProps::SubpropertyEntryFor(aProperty);
|
|
const nsCSSValue *fontVariantLigatures =
|
|
data->ValueFor(eCSSProperty_font_variant_ligatures);
|
|
|
|
// all subproperty values normal? system font?
|
|
bool normalLigs = true, normalNonLigs = true, systemFont = true,
|
|
hasSystem = false;
|
|
for (const nsCSSPropertyID *sp = subprops; *sp != eCSSProperty_UNKNOWN; sp++) {
|
|
const nsCSSValue *spVal = data->ValueFor(*sp);
|
|
bool isNormal = (spVal->GetUnit() == eCSSUnit_Normal);
|
|
if (*sp == eCSSProperty_font_variant_ligatures) {
|
|
normalLigs = normalLigs && isNormal;
|
|
} else {
|
|
normalNonLigs = normalNonLigs && isNormal;
|
|
}
|
|
bool isSystem = (spVal->GetUnit() == eCSSUnit_System_Font);
|
|
systemFont = systemFont && isSystem;
|
|
hasSystem = hasSystem || isSystem;
|
|
}
|
|
|
|
bool ligsNone =
|
|
fontVariantLigatures->GetUnit() == eCSSUnit_None;
|
|
|
|
// normal, none, or system font ==> single value
|
|
if ((normalLigs && normalNonLigs) ||
|
|
(normalNonLigs && ligsNone) ||
|
|
systemFont) {
|
|
fontVariantLigatures->AppendToString(eCSSProperty_font_variant_ligatures,
|
|
aValue,
|
|
aSerialization);
|
|
} else if (ligsNone || hasSystem) {
|
|
// ligatures none but other values are non-normal ==> empty
|
|
// at least one but not all values are system font ==> empty
|
|
return;
|
|
} else {
|
|
// iterate over and append non-normal values
|
|
bool appendSpace = false;
|
|
for (const nsCSSPropertyID *sp = subprops;
|
|
*sp != eCSSProperty_UNKNOWN; sp++) {
|
|
const nsCSSValue *spVal = data->ValueFor(*sp);
|
|
if (spVal && spVal->GetUnit() != eCSSUnit_Normal) {
|
|
if (appendSpace) {
|
|
aValue.Append(char16_t(' '));
|
|
} else {
|
|
appendSpace = true;
|
|
}
|
|
spVal->AppendToString(*sp, aValue, aSerialization);
|
|
}
|
|
}
|
|
}
|
|
break;
|
|
}
|
|
case eCSSProperty_list_style:
|
|
if (AppendValueToString(eCSSProperty_list_style_position, aValue,
|
|
aSerialization)) {
|
|
aValue.Append(char16_t(' '));
|
|
}
|
|
if (AppendValueToString(eCSSProperty_list_style_image, aValue,
|
|
aSerialization)) {
|
|
aValue.Append(char16_t(' '));
|
|
}
|
|
AppendValueToString(eCSSProperty_list_style_type, aValue,
|
|
aSerialization);
|
|
break;
|
|
case eCSSProperty_overflow: {
|
|
const nsCSSValue &xValue =
|
|
*data->ValueFor(eCSSProperty_overflow_x);
|
|
const nsCSSValue &yValue =
|
|
*data->ValueFor(eCSSProperty_overflow_y);
|
|
if (xValue == yValue)
|
|
xValue.AppendToString(eCSSProperty_overflow_x, aValue, aSerialization);
|
|
break;
|
|
}
|
|
case eCSSProperty_text_decoration: {
|
|
const nsCSSValue *decorationColor =
|
|
data->ValueFor(eCSSProperty_text_decoration_color);
|
|
const nsCSSValue *decorationStyle =
|
|
data->ValueFor(eCSSProperty_text_decoration_style);
|
|
|
|
MOZ_ASSERT(decorationStyle->GetUnit() == eCSSUnit_Enumerated,
|
|
"bad text-decoration-style unit");
|
|
|
|
AppendValueToString(eCSSProperty_text_decoration_line, aValue,
|
|
aSerialization);
|
|
if (decorationStyle->GetIntValue() !=
|
|
NS_STYLE_TEXT_DECORATION_STYLE_SOLID) {
|
|
aValue.Append(char16_t(' '));
|
|
AppendValueToString(eCSSProperty_text_decoration_style, aValue,
|
|
aSerialization);
|
|
}
|
|
if (decorationColor->GetUnit() != eCSSUnit_EnumColor ||
|
|
decorationColor->GetIntValue() != NS_COLOR_CURRENTCOLOR) {
|
|
aValue.Append(char16_t(' '));
|
|
AppendValueToString(eCSSProperty_text_decoration_color, aValue,
|
|
aSerialization);
|
|
}
|
|
break;
|
|
}
|
|
case eCSSProperty_transition: {
|
|
const nsCSSValue *transProp =
|
|
data->ValueFor(eCSSProperty_transition_property);
|
|
const nsCSSValue *transDuration =
|
|
data->ValueFor(eCSSProperty_transition_duration);
|
|
const nsCSSValue *transTiming =
|
|
data->ValueFor(eCSSProperty_transition_timing_function);
|
|
const nsCSSValue *transDelay =
|
|
data->ValueFor(eCSSProperty_transition_delay);
|
|
|
|
MOZ_ASSERT(transDuration->GetUnit() == eCSSUnit_List ||
|
|
transDuration->GetUnit() == eCSSUnit_ListDep,
|
|
"bad t-duration unit");
|
|
MOZ_ASSERT(transTiming->GetUnit() == eCSSUnit_List ||
|
|
transTiming->GetUnit() == eCSSUnit_ListDep,
|
|
"bad t-timing unit");
|
|
MOZ_ASSERT(transDelay->GetUnit() == eCSSUnit_List ||
|
|
transDelay->GetUnit() == eCSSUnit_ListDep,
|
|
"bad t-delay unit");
|
|
|
|
const nsCSSValueList* dur = transDuration->GetListValue();
|
|
const nsCSSValueList* tim = transTiming->GetListValue();
|
|
const nsCSSValueList* del = transDelay->GetListValue();
|
|
|
|
if (transProp->GetUnit() == eCSSUnit_None ||
|
|
transProp->GetUnit() == eCSSUnit_All) {
|
|
// If any of the other three lists has more than one element,
|
|
// we can't use the shorthand.
|
|
if (!dur->mNext && !tim->mNext && !del->mNext) {
|
|
transProp->AppendToString(eCSSProperty_transition_property, aValue,
|
|
aSerialization);
|
|
aValue.Append(char16_t(' '));
|
|
dur->mValue.AppendToString(eCSSProperty_transition_duration,aValue,
|
|
aSerialization);
|
|
aValue.Append(char16_t(' '));
|
|
tim->mValue.AppendToString(eCSSProperty_transition_timing_function,
|
|
aValue, aSerialization);
|
|
aValue.Append(char16_t(' '));
|
|
del->mValue.AppendToString(eCSSProperty_transition_delay, aValue,
|
|
aSerialization);
|
|
aValue.Append(char16_t(' '));
|
|
} else {
|
|
aValue.Truncate();
|
|
}
|
|
} else {
|
|
MOZ_ASSERT(transProp->GetUnit() == eCSSUnit_List ||
|
|
transProp->GetUnit() == eCSSUnit_ListDep,
|
|
"bad t-prop unit");
|
|
const nsCSSValueList* pro = transProp->GetListValue();
|
|
for (;;) {
|
|
pro->mValue.AppendToString(eCSSProperty_transition_property,
|
|
aValue, aSerialization);
|
|
aValue.Append(char16_t(' '));
|
|
dur->mValue.AppendToString(eCSSProperty_transition_duration,
|
|
aValue, aSerialization);
|
|
aValue.Append(char16_t(' '));
|
|
tim->mValue.AppendToString(eCSSProperty_transition_timing_function,
|
|
aValue, aSerialization);
|
|
aValue.Append(char16_t(' '));
|
|
del->mValue.AppendToString(eCSSProperty_transition_delay,
|
|
aValue, aSerialization);
|
|
pro = pro->mNext;
|
|
dur = dur->mNext;
|
|
tim = tim->mNext;
|
|
del = del->mNext;
|
|
if (!pro || !dur || !tim || !del) {
|
|
break;
|
|
}
|
|
aValue.AppendLiteral(", ");
|
|
}
|
|
if (pro || dur || tim || del) {
|
|
// Lists not all the same length, can't use shorthand.
|
|
aValue.Truncate();
|
|
}
|
|
}
|
|
break;
|
|
}
|
|
case eCSSProperty_animation: {
|
|
const nsCSSPropertyID* subprops =
|
|
nsCSSProps::SubpropertyEntryFor(eCSSProperty_animation);
|
|
static const size_t numProps = 8;
|
|
MOZ_ASSERT(subprops[numProps] == eCSSProperty_UNKNOWN,
|
|
"unexpected number of subproperties");
|
|
const nsCSSValue* values[numProps];
|
|
const nsCSSValueList* lists[numProps];
|
|
|
|
for (uint32_t i = 0; i < numProps; ++i) {
|
|
values[i] = data->ValueFor(subprops[i]);
|
|
MOZ_ASSERT(values[i]->GetUnit() == eCSSUnit_List ||
|
|
values[i]->GetUnit() == eCSSUnit_ListDep,
|
|
"bad a-duration unit");
|
|
lists[i] = values[i]->GetListValue();
|
|
}
|
|
|
|
for (;;) {
|
|
// We must serialize 'animation-name' last in case it has
|
|
// a value that conflicts with one of the other keyword properties.
|
|
MOZ_ASSERT(subprops[numProps - 1] == eCSSProperty_animation_name,
|
|
"animation-name must be last");
|
|
bool done = false;
|
|
for (uint32_t i = 0;;) {
|
|
lists[i]->mValue.AppendToString(subprops[i], aValue, aSerialization);
|
|
lists[i] = lists[i]->mNext;
|
|
if (!lists[i]) {
|
|
done = true;
|
|
}
|
|
if (++i == numProps) {
|
|
break;
|
|
}
|
|
aValue.Append(char16_t(' '));
|
|
}
|
|
if (done) {
|
|
break;
|
|
}
|
|
aValue.AppendLiteral(", ");
|
|
}
|
|
for (uint32_t i = 0; i < numProps; ++i) {
|
|
if (lists[i]) {
|
|
// Lists not all the same length, can't use shorthand.
|
|
aValue.Truncate();
|
|
break;
|
|
}
|
|
}
|
|
break;
|
|
}
|
|
case eCSSProperty_marker: {
|
|
const nsCSSValue &endValue =
|
|
*data->ValueFor(eCSSProperty_marker_end);
|
|
const nsCSSValue &midValue =
|
|
*data->ValueFor(eCSSProperty_marker_mid);
|
|
const nsCSSValue &startValue =
|
|
*data->ValueFor(eCSSProperty_marker_start);
|
|
if (endValue == midValue && midValue == startValue)
|
|
AppendValueToString(eCSSProperty_marker_end, aValue, aSerialization);
|
|
break;
|
|
}
|
|
case eCSSProperty_columns: {
|
|
// Two values, column-count and column-width, separated by a space.
|
|
const nsCSSPropertyID* subprops =
|
|
nsCSSProps::SubpropertyEntryFor(aProperty);
|
|
AppendValueToString(subprops[0], aValue, aSerialization);
|
|
aValue.Append(char16_t(' '));
|
|
AppendValueToString(subprops[1], aValue, aSerialization);
|
|
break;
|
|
}
|
|
case eCSSProperty_flex: {
|
|
// flex-grow, flex-shrink, flex-basis, separated by single space
|
|
const nsCSSPropertyID* subprops =
|
|
nsCSSProps::SubpropertyEntryFor(aProperty);
|
|
|
|
AppendValueToString(subprops[0], aValue, aSerialization);
|
|
aValue.Append(char16_t(' '));
|
|
AppendValueToString(subprops[1], aValue, aSerialization);
|
|
aValue.Append(char16_t(' '));
|
|
AppendValueToString(subprops[2], aValue, aSerialization);
|
|
break;
|
|
}
|
|
case eCSSProperty_flex_flow: {
|
|
// flex-direction, flex-wrap, separated by single space
|
|
const nsCSSPropertyID* subprops =
|
|
nsCSSProps::SubpropertyEntryFor(aProperty);
|
|
MOZ_ASSERT(subprops[2] == eCSSProperty_UNKNOWN,
|
|
"must have exactly two subproperties");
|
|
|
|
AppendValueToString(subprops[0], aValue, aSerialization);
|
|
aValue.Append(char16_t(' '));
|
|
AppendValueToString(subprops[1], aValue, aSerialization);
|
|
break;
|
|
}
|
|
case eCSSProperty_grid_row:
|
|
case eCSSProperty_grid_column: {
|
|
// grid-{row,column}-start, grid-{row,column}-end, separated by a slash
|
|
const nsCSSPropertyID* subprops =
|
|
nsCSSProps::SubpropertyEntryFor(aProperty);
|
|
MOZ_ASSERT(subprops[2] == eCSSProperty_UNKNOWN,
|
|
"must have exactly two subproperties");
|
|
|
|
// TODO: should we simplify when possible?
|
|
AppendValueToString(subprops[0], aValue, aSerialization);
|
|
aValue.AppendLiteral(" / ");
|
|
AppendValueToString(subprops[1], aValue, aSerialization);
|
|
break;
|
|
}
|
|
case eCSSProperty_grid_area: {
|
|
const nsCSSPropertyID* subprops =
|
|
nsCSSProps::SubpropertyEntryFor(aProperty);
|
|
MOZ_ASSERT(subprops[4] == eCSSProperty_UNKNOWN,
|
|
"must have exactly four subproperties");
|
|
|
|
// TODO: should we simplify when possible?
|
|
AppendValueToString(subprops[0], aValue, aSerialization);
|
|
aValue.AppendLiteral(" / ");
|
|
AppendValueToString(subprops[1], aValue, aSerialization);
|
|
aValue.AppendLiteral(" / ");
|
|
AppendValueToString(subprops[2], aValue, aSerialization);
|
|
aValue.AppendLiteral(" / ");
|
|
AppendValueToString(subprops[3], aValue, aSerialization);
|
|
break;
|
|
}
|
|
|
|
// The 'grid' shorthand has 3 different possibilities for syntax:
|
|
// #1 <'grid-template'>
|
|
// #2 <'grid-template-rows'> / [ auto-flow && dense? ] <'grid-auto-columns'>?
|
|
// #3 [ auto-flow && dense? ] <'grid-auto-rows'>? / <'grid-template-columns'>
|
|
case eCSSProperty_grid: {
|
|
const nsCSSValue& columnGapValue =
|
|
*data->ValueFor(eCSSProperty_grid_column_gap);
|
|
if (columnGapValue.GetUnit() != eCSSUnit_Pixel ||
|
|
columnGapValue.GetFloatValue() != 0.0f) {
|
|
return; // Not serializable, bail.
|
|
}
|
|
const nsCSSValue& rowGapValue =
|
|
*data->ValueFor(eCSSProperty_grid_row_gap);
|
|
if (rowGapValue.GetUnit() != eCSSUnit_Pixel ||
|
|
rowGapValue.GetFloatValue() != 0.0f) {
|
|
return; // Not serializable, bail.
|
|
}
|
|
const nsCSSValue& areasValue =
|
|
*data->ValueFor(eCSSProperty_grid_template_areas);
|
|
const nsCSSValue& columnsValue =
|
|
*data->ValueFor(eCSSProperty_grid_template_columns);
|
|
const nsCSSValue& rowsValue =
|
|
*data->ValueFor(eCSSProperty_grid_template_rows);
|
|
|
|
const nsCSSValue& autoFlowValue =
|
|
*data->ValueFor(eCSSProperty_grid_auto_flow);
|
|
const nsCSSValue& autoColumnsValue =
|
|
*data->ValueFor(eCSSProperty_grid_auto_columns);
|
|
const nsCSSValue& autoRowsValue =
|
|
*data->ValueFor(eCSSProperty_grid_auto_rows);
|
|
|
|
// grid-template-rows/areas:none + default grid-auto-columns +
|
|
// non-default row grid-auto-flow or grid-auto-rows.
|
|
// --> serialize as 'grid' syntax #3.
|
|
// (for default grid-auto-flow/rows we prefer to serialize to
|
|
// "none ['/' ...]" instead using syntax #2 or #1 below)
|
|
if (rowsValue.GetUnit() == eCSSUnit_None &&
|
|
areasValue.GetUnit() == eCSSUnit_None &&
|
|
autoColumnsValue.GetUnit() == eCSSUnit_Auto &&
|
|
autoFlowValue.GetUnit() == eCSSUnit_Enumerated &&
|
|
(autoFlowValue.GetIntValue() & NS_STYLE_GRID_AUTO_FLOW_ROW) &&
|
|
(autoFlowValue.GetIntValue() != NS_STYLE_GRID_AUTO_FLOW_ROW ||
|
|
autoRowsValue.GetUnit() != eCSSUnit_Auto)) {
|
|
aValue.AppendLiteral("auto-flow");
|
|
if (autoFlowValue.GetIntValue() & NS_STYLE_GRID_AUTO_FLOW_DENSE) {
|
|
aValue.AppendLiteral(" dense");
|
|
}
|
|
if (autoRowsValue.GetUnit() != eCSSUnit_Auto) {
|
|
aValue.Append(' ');
|
|
AppendValueToString(eCSSProperty_grid_auto_rows,
|
|
aValue, aSerialization);
|
|
}
|
|
aValue.AppendLiteral(" / ");
|
|
AppendValueToString(eCSSProperty_grid_template_columns,
|
|
aValue, aSerialization);
|
|
break;
|
|
}
|
|
|
|
// grid-template-columns/areas:none + column grid-auto-flow +
|
|
// default grid-auto-rows.
|
|
// --> serialize as 'grid' syntax #2.
|
|
if (columnsValue.GetUnit() == eCSSUnit_None &&
|
|
areasValue.GetUnit() == eCSSUnit_None &&
|
|
autoRowsValue.GetUnit() == eCSSUnit_Auto &&
|
|
autoFlowValue.GetUnit() == eCSSUnit_Enumerated &&
|
|
(autoFlowValue.GetIntValue() & NS_STYLE_GRID_AUTO_FLOW_COLUMN)) {
|
|
AppendValueToString(eCSSProperty_grid_template_rows,
|
|
aValue, aSerialization);
|
|
aValue.AppendLiteral(" / auto-flow ");
|
|
if (autoFlowValue.GetIntValue() & NS_STYLE_GRID_AUTO_FLOW_DENSE) {
|
|
aValue.AppendLiteral("dense ");
|
|
}
|
|
AppendValueToString(eCSSProperty_grid_auto_columns,
|
|
aValue, aSerialization);
|
|
break;
|
|
}
|
|
|
|
if (!(autoFlowValue.GetUnit() == eCSSUnit_Enumerated &&
|
|
autoFlowValue.GetIntValue() == NS_STYLE_GRID_AUTO_FLOW_ROW &&
|
|
autoColumnsValue.GetUnit() == eCSSUnit_Auto &&
|
|
autoRowsValue.GetUnit() == eCSSUnit_Auto)) {
|
|
// Not serializable, bail.
|
|
return;
|
|
}
|
|
// Fall through to eCSSProperty_grid_template (syntax #1)
|
|
MOZ_FALLTHROUGH;
|
|
}
|
|
case eCSSProperty_grid_template: {
|
|
const nsCSSValue& areasValue =
|
|
*data->ValueFor(eCSSProperty_grid_template_areas);
|
|
const nsCSSValue& columnsValue =
|
|
*data->ValueFor(eCSSProperty_grid_template_columns);
|
|
const nsCSSValue& rowsValue =
|
|
*data->ValueFor(eCSSProperty_grid_template_rows);
|
|
if (areasValue.GetUnit() == eCSSUnit_None) {
|
|
AppendValueToString(eCSSProperty_grid_template_rows,
|
|
aValue, aSerialization);
|
|
aValue.AppendLiteral(" / ");
|
|
AppendValueToString(eCSSProperty_grid_template_columns,
|
|
aValue, aSerialization);
|
|
break;
|
|
}
|
|
if (columnsValue.GetUnit() == eCSSUnit_List ||
|
|
columnsValue.GetUnit() == eCSSUnit_ListDep) {
|
|
const nsCSSValueList* columnsItem = columnsValue.GetListValue();
|
|
if (columnsItem->mValue.GetUnit() == eCSSUnit_Enumerated &&
|
|
columnsItem->mValue.GetIntValue() == NS_STYLE_GRID_TEMPLATE_SUBGRID) {
|
|
// We have "grid-template-areas:[something]; grid-template-columns:subgrid"
|
|
// which isn't a value that the shorthand can express. Bail.
|
|
return;
|
|
}
|
|
}
|
|
if (rowsValue.GetUnit() != eCSSUnit_List &&
|
|
rowsValue.GetUnit() != eCSSUnit_ListDep) {
|
|
// We have "grid-template-areas:[something]; grid-template-rows:none"
|
|
// which isn't a value that the shorthand can express. Bail.
|
|
return;
|
|
}
|
|
const nsCSSValueList* rowsItem = rowsValue.GetListValue();
|
|
if (rowsItem->mValue.GetUnit() == eCSSUnit_Enumerated &&
|
|
rowsItem->mValue.GetIntValue() == NS_STYLE_GRID_TEMPLATE_SUBGRID) {
|
|
// We have "grid-template-areas:[something]; grid-template-rows:subgrid"
|
|
// which isn't a value that the shorthand can express. Bail.
|
|
return;
|
|
}
|
|
const GridTemplateAreasValue* areas = areasValue.GetGridTemplateAreas();
|
|
uint32_t nRowItems = 0;
|
|
while (rowsItem) {
|
|
nRowItems++;
|
|
rowsItem = rowsItem->mNext;
|
|
}
|
|
MOZ_ASSERT(nRowItems % 2 == 1, "expected an odd number of items");
|
|
if ((nRowItems - 1) / 2 != areas->NRows()) {
|
|
// Not serializable, bail.
|
|
return;
|
|
}
|
|
rowsItem = rowsValue.GetListValue();
|
|
uint32_t row = 0;
|
|
for (;;) {
|
|
bool addSpaceSeparator = true;
|
|
nsCSSUnit unit = rowsItem->mValue.GetUnit();
|
|
|
|
if (unit == eCSSUnit_Null) {
|
|
// Empty or omitted <line-names>. Serializes to nothing.
|
|
addSpaceSeparator = false; // Avoid a double space.
|
|
|
|
} else if (unit == eCSSUnit_List || unit == eCSSUnit_ListDep) {
|
|
// Non-empty <line-names>
|
|
aValue.Append('[');
|
|
rowsItem->mValue.AppendToString(eCSSProperty_grid_template_rows,
|
|
aValue, aSerialization);
|
|
aValue.Append(']');
|
|
|
|
} else {
|
|
nsStyleUtil::AppendEscapedCSSString(areas->mTemplates[row++], aValue);
|
|
aValue.Append(char16_t(' '));
|
|
|
|
// <track-size>
|
|
if (unit == eCSSUnit_Pair) {
|
|
// 'repeat()' isn't allowed with non-default 'grid-template-areas'.
|
|
aValue.Truncate();
|
|
return;
|
|
}
|
|
rowsItem->mValue.AppendToString(eCSSProperty_grid_template_rows,
|
|
aValue, aSerialization);
|
|
if (rowsItem->mNext &&
|
|
rowsItem->mNext->mValue.GetUnit() == eCSSUnit_Null &&
|
|
!rowsItem->mNext->mNext) {
|
|
// Break out of the loop early to avoid a trailing space.
|
|
break;
|
|
}
|
|
}
|
|
|
|
rowsItem = rowsItem->mNext;
|
|
if (!rowsItem) {
|
|
break;
|
|
}
|
|
|
|
if (addSpaceSeparator) {
|
|
aValue.Append(char16_t(' '));
|
|
}
|
|
}
|
|
if (columnsValue.GetUnit() != eCSSUnit_None) {
|
|
const nsCSSValueList* colsItem = columnsValue.GetListValue();
|
|
colsItem = colsItem->mNext; // first value is <line-names>
|
|
for (; colsItem; colsItem = colsItem->mNext) {
|
|
if (colsItem->mValue.GetUnit() == eCSSUnit_Pair) {
|
|
// 'repeat()' isn't allowed with non-default 'grid-template-areas'.
|
|
aValue.Truncate();
|
|
return;
|
|
}
|
|
colsItem = colsItem->mNext; // skip <line-names>
|
|
}
|
|
aValue.AppendLiteral(" / ");
|
|
AppendValueToString(eCSSProperty_grid_template_columns,
|
|
aValue, aSerialization);
|
|
}
|
|
break;
|
|
}
|
|
case eCSSProperty_place_content:
|
|
case eCSSProperty_place_items:
|
|
case eCSSProperty_place_self: {
|
|
const nsCSSPropertyID* subprops =
|
|
nsCSSProps::SubpropertyEntryFor(aProperty);
|
|
MOZ_ASSERT(subprops[2] == eCSSProperty_UNKNOWN,
|
|
"must have exactly two subproperties");
|
|
auto IsSingleValue = [] (const nsCSSValue& aValue) {
|
|
switch (aValue.GetUnit()) {
|
|
case eCSSUnit_Auto:
|
|
case eCSSUnit_Inherit:
|
|
case eCSSUnit_Initial:
|
|
case eCSSUnit_Unset:
|
|
return true;
|
|
case eCSSUnit_Enumerated:
|
|
// return false if there is a fallback value or <overflow-position>
|
|
return aValue.GetIntValue() <= NS_STYLE_JUSTIFY_SPACE_EVENLY;
|
|
default:
|
|
MOZ_ASSERT_UNREACHABLE("Unexpected unit for CSS Align property val");
|
|
return false;
|
|
}
|
|
};
|
|
// Each value must be a single value (i.e. no fallback value and no
|
|
// <overflow-position>), otherwise it can't be represented as a shorthand
|
|
// value. ('first|last baseline' counts as a single value)
|
|
const nsCSSValue* align = data->ValueFor(subprops[0]);
|
|
const nsCSSValue* justify = data->ValueFor(subprops[1]);
|
|
if (!align || !IsSingleValue(*align) ||
|
|
!justify || !IsSingleValue(*justify)) {
|
|
return; // Not serializable, bail.
|
|
}
|
|
MOZ_FALLTHROUGH;
|
|
}
|
|
case eCSSProperty_grid_gap: {
|
|
const nsCSSPropertyID* subprops =
|
|
nsCSSProps::SubpropertyEntryFor(aProperty);
|
|
MOZ_ASSERT(subprops[2] == eCSSProperty_UNKNOWN,
|
|
"must have exactly two subproperties");
|
|
|
|
nsAutoString val1, val2;
|
|
AppendValueToString(subprops[0], val1, aSerialization);
|
|
AppendValueToString(subprops[1], val2, aSerialization);
|
|
if (val1 == val2) {
|
|
aValue.Append(val1);
|
|
} else {
|
|
aValue.Append(val1);
|
|
aValue.Append(' ');
|
|
aValue.Append(val2);
|
|
}
|
|
break;
|
|
}
|
|
case eCSSProperty_text_emphasis: {
|
|
const nsCSSValue* emphasisStyle =
|
|
data->ValueFor(eCSSProperty_text_emphasis_style);
|
|
const nsCSSValue* emphasisColor =
|
|
data->ValueFor(eCSSProperty_text_emphasis_color);
|
|
bool isDefaultColor = emphasisColor->GetUnit() == eCSSUnit_EnumColor &&
|
|
emphasisColor->GetIntValue() == NS_COLOR_CURRENTCOLOR;
|
|
|
|
if (emphasisStyle->GetUnit() != eCSSUnit_None || isDefaultColor) {
|
|
AppendValueToString(eCSSProperty_text_emphasis_style,
|
|
aValue, aSerialization);
|
|
if (!isDefaultColor) {
|
|
aValue.Append(char16_t(' '));
|
|
}
|
|
}
|
|
if (!isDefaultColor) {
|
|
AppendValueToString(eCSSProperty_text_emphasis_color,
|
|
aValue, aSerialization);
|
|
}
|
|
break;
|
|
}
|
|
case eCSSProperty__moz_transform: {
|
|
// shorthands that are just aliases with different parsing rules
|
|
const nsCSSPropertyID* subprops =
|
|
nsCSSProps::SubpropertyEntryFor(aProperty);
|
|
MOZ_ASSERT(subprops[1] == eCSSProperty_UNKNOWN,
|
|
"must have exactly one subproperty");
|
|
AppendValueToString(subprops[0], aValue, aSerialization);
|
|
break;
|
|
}
|
|
case eCSSProperty_scroll_snap_type: {
|
|
const nsCSSValue& xValue =
|
|
*data->ValueFor(eCSSProperty_scroll_snap_type_x);
|
|
const nsCSSValue& yValue =
|
|
*data->ValueFor(eCSSProperty_scroll_snap_type_y);
|
|
if (xValue == yValue) {
|
|
AppendValueToString(eCSSProperty_scroll_snap_type_x, aValue,
|
|
aSerialization);
|
|
}
|
|
// If scroll-snap-type-x and scroll-snap-type-y are not equal,
|
|
// we don't have a shorthand that can express. Bail.
|
|
break;
|
|
}
|
|
case eCSSProperty__webkit_text_stroke: {
|
|
const nsCSSValue* strokeWidth =
|
|
data->ValueFor(eCSSProperty__webkit_text_stroke_width);
|
|
const nsCSSValue* strokeColor =
|
|
data->ValueFor(eCSSProperty__webkit_text_stroke_color);
|
|
bool isDefaultColor = strokeColor->GetUnit() == eCSSUnit_EnumColor &&
|
|
strokeColor->GetIntValue() == NS_COLOR_CURRENTCOLOR;
|
|
|
|
if (strokeWidth->GetUnit() != eCSSUnit_Integer ||
|
|
strokeWidth->GetIntValue() != 0 || isDefaultColor) {
|
|
AppendValueToString(eCSSProperty__webkit_text_stroke_width,
|
|
aValue, aSerialization);
|
|
if (!isDefaultColor) {
|
|
aValue.Append(char16_t(' '));
|
|
}
|
|
}
|
|
if (!isDefaultColor) {
|
|
AppendValueToString(eCSSProperty__webkit_text_stroke_color,
|
|
aValue, aSerialization);
|
|
}
|
|
break;
|
|
}
|
|
case eCSSProperty_all:
|
|
// If we got here, then we didn't have all "inherit" or "initial" or
|
|
// "unset" values for all of the longhand property components of 'all'.
|
|
// There is no other possible value that is valid for all properties,
|
|
// so serialize as the empty string.
|
|
break;
|
|
default:
|
|
MOZ_ASSERT(false, "no other shorthands");
|
|
break;
|
|
}
|
|
}
|
|
|
|
bool
|
|
Declaration::GetPropertyIsImportantByID(nsCSSPropertyID aProperty) const
|
|
{
|
|
if (!mImportantData)
|
|
return false;
|
|
|
|
// Calling ValueFor is inefficient, but we can assume '!important' is rare.
|
|
|
|
if (!nsCSSProps::IsShorthand(aProperty)) {
|
|
return mImportantData->ValueFor(aProperty) != nullptr;
|
|
}
|
|
|
|
CSSPROPS_FOR_SHORTHAND_SUBPROPERTIES(p, aProperty,
|
|
CSSEnabledState::eForAllContent) {
|
|
if (*p == eCSSProperty__x_system_font) {
|
|
// The system_font subproperty doesn't count.
|
|
continue;
|
|
}
|
|
if (!mImportantData->ValueFor(*p)) {
|
|
return false;
|
|
}
|
|
}
|
|
return true;
|
|
}
|
|
|
|
void
|
|
Declaration::AppendPropertyAndValueToString(nsCSSPropertyID aProperty,
|
|
nsAString& aResult,
|
|
nsAutoString& aValue,
|
|
bool aValueIsTokenStream) const
|
|
{
|
|
MOZ_ASSERT(0 <= aProperty && aProperty < eCSSProperty_COUNT,
|
|
"property enum out of range");
|
|
MOZ_ASSERT((aProperty < eCSSProperty_COUNT_no_shorthands) == aValue.IsEmpty(),
|
|
"aValue should be given for shorthands but not longhands");
|
|
AppendASCIItoUTF16(nsCSSProps::GetStringValue(aProperty), aResult);
|
|
if (aValue.IsEmpty()) {
|
|
AppendValueToString(aProperty, aValue,
|
|
nsCSSValue::eNormalized, &aValueIsTokenStream);
|
|
}
|
|
aResult.Append(':');
|
|
if (!aValueIsTokenStream) {
|
|
aResult.Append(' ');
|
|
}
|
|
aResult.Append(aValue);
|
|
if (GetPropertyIsImportantByID(aProperty)) {
|
|
if (!aValueIsTokenStream) {
|
|
aResult.Append(' ');
|
|
}
|
|
aResult.AppendLiteral("!important");
|
|
}
|
|
aResult.AppendLiteral("; ");
|
|
}
|
|
|
|
void
|
|
Declaration::AppendVariableAndValueToString(const nsAString& aName,
|
|
nsAString& aResult) const
|
|
{
|
|
nsAutoString localName;
|
|
localName.AppendLiteral("--");
|
|
localName.Append(aName);
|
|
nsStyleUtil::AppendEscapedCSSIdent(localName, aResult);
|
|
CSSVariableDeclarations::Type type;
|
|
nsString value;
|
|
bool important;
|
|
|
|
if (mImportantVariables && mImportantVariables->Get(aName, type, value)) {
|
|
important = true;
|
|
} else {
|
|
MOZ_ASSERT(mVariables);
|
|
MOZ_ASSERT(mVariables->Has(aName));
|
|
mVariables->Get(aName, type, value);
|
|
important = false;
|
|
}
|
|
|
|
bool isTokenStream = type == CSSVariableDeclarations::eTokenStream;
|
|
aResult.Append(':');
|
|
if (!isTokenStream) {
|
|
aResult.Append(' ');
|
|
}
|
|
switch (type) {
|
|
case CSSVariableDeclarations::eTokenStream:
|
|
aResult.Append(value);
|
|
break;
|
|
|
|
case CSSVariableDeclarations::eInitial:
|
|
aResult.AppendLiteral("initial");
|
|
break;
|
|
|
|
case CSSVariableDeclarations::eInherit:
|
|
aResult.AppendLiteral("inherit");
|
|
break;
|
|
|
|
case CSSVariableDeclarations::eUnset:
|
|
aResult.AppendLiteral("unset");
|
|
break;
|
|
|
|
default:
|
|
MOZ_ASSERT(false, "unexpected variable value type");
|
|
}
|
|
|
|
if (important) {
|
|
if (!isTokenStream) {
|
|
aResult.Append(' ');
|
|
}
|
|
aResult.AppendLiteral("!important");
|
|
}
|
|
aResult.AppendLiteral("; ");
|
|
}
|
|
|
|
void
|
|
Declaration::ToString(nsAString& aString) const
|
|
{
|
|
// Tell the static analysis not to worry about thread-unsafe things here
|
|
// because because this function isn't reached during parallel style traversal.
|
|
MOZ_ASSERT(!ServoStyleSet::IsInServoTraversal());
|
|
|
|
nsCSSCompressedDataBlock *systemFontData =
|
|
GetPropertyIsImportantByID(eCSSProperty__x_system_font) ? mImportantData
|
|
: mData;
|
|
const nsCSSValue *systemFont =
|
|
systemFontData->ValueFor(eCSSProperty__x_system_font);
|
|
const bool haveSystemFont = systemFont &&
|
|
systemFont->GetUnit() != eCSSUnit_None &&
|
|
systemFont->GetUnit() != eCSSUnit_Null;
|
|
bool didSystemFont = false;
|
|
|
|
int32_t count = mOrder.Length();
|
|
int32_t index;
|
|
AutoTArray<nsCSSPropertyID, 16> shorthandsUsed;
|
|
for (index = 0; index < count; index++) {
|
|
nsCSSPropertyID property = GetPropertyAt(index);
|
|
|
|
if (property == eCSSPropertyExtra_variable) {
|
|
uint32_t variableIndex = mOrder[index] - eCSSProperty_COUNT;
|
|
AppendVariableAndValueToString(mVariableOrder[variableIndex], aString);
|
|
continue;
|
|
}
|
|
|
|
if (!nsCSSProps::IsEnabled(property, CSSEnabledState::eForAllContent)) {
|
|
continue;
|
|
}
|
|
bool doneProperty = false;
|
|
|
|
// If we already used this property in a shorthand, skip it.
|
|
if (shorthandsUsed.Length() > 0) {
|
|
for (const nsCSSPropertyID *shorthands =
|
|
nsCSSProps::ShorthandsContaining(property);
|
|
*shorthands != eCSSProperty_UNKNOWN; ++shorthands) {
|
|
if (shorthandsUsed.Contains(*shorthands)) {
|
|
doneProperty = true;
|
|
break;
|
|
}
|
|
}
|
|
if (doneProperty)
|
|
continue;
|
|
}
|
|
|
|
// Try to use this property in a shorthand.
|
|
nsAutoString value;
|
|
for (const nsCSSPropertyID *shorthands =
|
|
nsCSSProps::ShorthandsContaining(property);
|
|
*shorthands != eCSSProperty_UNKNOWN; ++shorthands) {
|
|
// ShorthandsContaining returns the shorthands in order from those
|
|
// that contain the most subproperties to those that contain the
|
|
// least, which is exactly the order we want to test them.
|
|
nsCSSPropertyID shorthand = *shorthands;
|
|
|
|
bool isTokenStream;
|
|
GetPropertyValueInternal(shorthand, value,
|
|
nsCSSValue::eNormalized, &isTokenStream);
|
|
|
|
// in the system font case, skip over font-variant shorthand, since all
|
|
// subproperties are already dealt with via the font shorthand
|
|
if (shorthand == eCSSProperty_font_variant &&
|
|
value.EqualsLiteral("-moz-use-system-font")) {
|
|
continue;
|
|
}
|
|
|
|
// If GetPropertyValueInternal gives us a non-empty string back, we can
|
|
// use that value; otherwise it's not possible to use this shorthand.
|
|
if (!value.IsEmpty()) {
|
|
AppendPropertyAndValueToString(shorthand, aString,
|
|
value, isTokenStream);
|
|
shorthandsUsed.AppendElement(shorthand);
|
|
doneProperty = true;
|
|
break;
|
|
}
|
|
|
|
if (shorthand == eCSSProperty_font) {
|
|
if (haveSystemFont && !didSystemFont) {
|
|
// Output the shorthand font declaration that we will
|
|
// partially override later. But don't add it to
|
|
// |shorthandsUsed|, since we will have to override it.
|
|
systemFont->AppendToString(eCSSProperty__x_system_font, value,
|
|
nsCSSValue::eNormalized);
|
|
isTokenStream = systemFont->GetUnit() == eCSSUnit_TokenStream;
|
|
AppendPropertyAndValueToString(eCSSProperty_font, aString,
|
|
value, isTokenStream);
|
|
value.Truncate();
|
|
didSystemFont = true;
|
|
}
|
|
|
|
// That we output the system font is enough for this property if:
|
|
// (1) it's the hidden system font subproperty (which either
|
|
// means we output it or we don't have it), or
|
|
// (2) its value is the hidden system font value and it matches
|
|
// the hidden system font subproperty in importance, and
|
|
// we output the system font subproperty.
|
|
const nsCSSValue *val = systemFontData->ValueFor(property);
|
|
if (property == eCSSProperty__x_system_font ||
|
|
(haveSystemFont && val && val->GetUnit() == eCSSUnit_System_Font)) {
|
|
doneProperty = true;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
if (doneProperty)
|
|
continue;
|
|
|
|
MOZ_ASSERT(value.IsEmpty(), "value should be empty now");
|
|
AppendPropertyAndValueToString(property, aString, value, false);
|
|
}
|
|
if (! aString.IsEmpty()) {
|
|
// if the string is not empty, we have trailing whitespace we
|
|
// should remove
|
|
aString.Truncate(aString.Length() - 1);
|
|
}
|
|
}
|
|
|
|
#ifdef DEBUG
|
|
/* virtual */ void
|
|
Declaration::List(FILE* out, int32_t aIndent) const
|
|
{
|
|
const Rule* owningRule = GetOwningRule();
|
|
if (owningRule) {
|
|
// More useful to print the selector and sheet URI too.
|
|
owningRule->List(out, aIndent);
|
|
return;
|
|
}
|
|
|
|
nsAutoCString str;
|
|
for (int32_t index = aIndent; --index >= 0; ) {
|
|
str.AppendLiteral(" ");
|
|
}
|
|
|
|
str.AppendLiteral("{ ");
|
|
nsAutoString s;
|
|
ToString(s);
|
|
AppendUTF16toUTF8(s, str);
|
|
str.AppendLiteral("}\n");
|
|
fprintf_stderr(out, "%s", str.get());
|
|
}
|
|
#endif
|
|
|
|
bool
|
|
Declaration::GetNthProperty(uint32_t aIndex, nsAString& aReturn) const
|
|
{
|
|
aReturn.Truncate();
|
|
if (aIndex < mOrder.Length()) {
|
|
nsCSSPropertyID property = GetPropertyAt(aIndex);
|
|
if (property == eCSSPropertyExtra_variable) {
|
|
GetCustomPropertyNameAt(aIndex, aReturn);
|
|
return true;
|
|
}
|
|
if (0 <= property) {
|
|
AppendASCIItoUTF16(nsCSSProps::GetStringValue(property), aReturn);
|
|
return true;
|
|
}
|
|
}
|
|
return false;
|
|
}
|
|
|
|
void
|
|
Declaration::InitializeEmpty()
|
|
{
|
|
MOZ_ASSERT(!mData && !mImportantData, "already initialized");
|
|
mData = nsCSSCompressedDataBlock::CreateEmptyBlock();
|
|
}
|
|
|
|
size_t
|
|
Declaration::SizeOfIncludingThis(mozilla::MallocSizeOf aMallocSizeOf) const
|
|
{
|
|
size_t n = aMallocSizeOf(this);
|
|
n += mOrder.ShallowSizeOfExcludingThis(aMallocSizeOf);
|
|
n += mData ? mData ->SizeOfIncludingThis(aMallocSizeOf) : 0;
|
|
n += mImportantData ? mImportantData->SizeOfIncludingThis(aMallocSizeOf) : 0;
|
|
if (mVariables) {
|
|
n += mVariables->SizeOfIncludingThis(aMallocSizeOf);
|
|
}
|
|
if (mImportantVariables) {
|
|
n += mImportantVariables->SizeOfIncludingThis(aMallocSizeOf);
|
|
}
|
|
return n;
|
|
}
|
|
|
|
void
|
|
Declaration::GetVariableValue(const nsAString& aName, nsAString& aValue) const
|
|
{
|
|
aValue.Truncate();
|
|
|
|
CSSVariableDeclarations::Type type;
|
|
nsString value;
|
|
|
|
if ((mImportantVariables && mImportantVariables->Get(aName, type, value)) ||
|
|
(mVariables && mVariables->Get(aName, type, value))) {
|
|
switch (type) {
|
|
case CSSVariableDeclarations::eTokenStream:
|
|
aValue.Append(value);
|
|
break;
|
|
|
|
case CSSVariableDeclarations::eInitial:
|
|
aValue.AppendLiteral("initial");
|
|
break;
|
|
|
|
case CSSVariableDeclarations::eInherit:
|
|
aValue.AppendLiteral("inherit");
|
|
break;
|
|
|
|
case CSSVariableDeclarations::eUnset:
|
|
aValue.AppendLiteral("unset");
|
|
break;
|
|
|
|
default:
|
|
MOZ_ASSERT(false, "unexpected variable value type");
|
|
}
|
|
}
|
|
}
|
|
|
|
void
|
|
Declaration::AddVariable(const nsAString& aName,
|
|
CSSVariableDeclarations::Type aType,
|
|
const nsString& aValue,
|
|
bool aIsImportant,
|
|
bool aOverrideImportant)
|
|
{
|
|
MOZ_ASSERT(IsMutable());
|
|
|
|
nsTArray<nsString>::index_type index = mVariableOrder.IndexOf(aName);
|
|
if (index == nsTArray<nsString>::NoIndex) {
|
|
index = mVariableOrder.Length();
|
|
mVariableOrder.AppendElement(aName);
|
|
}
|
|
|
|
if (!aIsImportant && !aOverrideImportant &&
|
|
mImportantVariables && mImportantVariables->Has(aName)) {
|
|
return;
|
|
}
|
|
|
|
CSSVariableDeclarations* variables;
|
|
if (aIsImportant) {
|
|
if (mVariables) {
|
|
mVariables->Remove(aName);
|
|
}
|
|
if (!mImportantVariables) {
|
|
mImportantVariables = new CSSVariableDeclarations;
|
|
}
|
|
variables = mImportantVariables;
|
|
} else {
|
|
if (mImportantVariables) {
|
|
mImportantVariables->Remove(aName);
|
|
}
|
|
if (!mVariables) {
|
|
mVariables = new CSSVariableDeclarations;
|
|
}
|
|
variables = mVariables;
|
|
}
|
|
|
|
switch (aType) {
|
|
case CSSVariableDeclarations::eTokenStream:
|
|
variables->PutTokenStream(aName, aValue);
|
|
break;
|
|
|
|
case CSSVariableDeclarations::eInitial:
|
|
MOZ_ASSERT(aValue.IsEmpty());
|
|
variables->PutInitial(aName);
|
|
break;
|
|
|
|
case CSSVariableDeclarations::eInherit:
|
|
MOZ_ASSERT(aValue.IsEmpty());
|
|
variables->PutInherit(aName);
|
|
break;
|
|
|
|
case CSSVariableDeclarations::eUnset:
|
|
MOZ_ASSERT(aValue.IsEmpty());
|
|
variables->PutUnset(aName);
|
|
break;
|
|
|
|
default:
|
|
MOZ_ASSERT(false, "unexpected aType value");
|
|
}
|
|
|
|
uint32_t propertyIndex = index + eCSSProperty_COUNT;
|
|
mOrder.RemoveElement(propertyIndex);
|
|
mOrder.AppendElement(propertyIndex);
|
|
}
|
|
|
|
void
|
|
Declaration::RemoveVariable(const nsAString& aName)
|
|
{
|
|
if (mVariables) {
|
|
mVariables->Remove(aName);
|
|
}
|
|
if (mImportantVariables) {
|
|
mImportantVariables->Remove(aName);
|
|
}
|
|
nsTArray<nsString>::index_type index = mVariableOrder.IndexOf(aName);
|
|
if (index != nsTArray<nsString>::NoIndex) {
|
|
mOrder.RemoveElement(index + eCSSProperty_COUNT);
|
|
}
|
|
}
|
|
|
|
bool
|
|
Declaration::GetVariableIsImportant(const nsAString& aName) const
|
|
{
|
|
return mImportantVariables && mImportantVariables->Has(aName);
|
|
}
|
|
|
|
} // namespace css
|
|
} // namespace mozilla
|