зеркало из https://github.com/mozilla/gecko-dev.git
111 строки
3.0 KiB
C++
111 строки
3.0 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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#include "mozilla/ServoDeclarationBlock.h"
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#include "mozilla/ServoBindings.h"
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#include "nsCSSProps.h"
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namespace mozilla {
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/* static */ already_AddRefed<ServoDeclarationBlock>
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ServoDeclarationBlock::FromCssText(const nsAString& aCssText)
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{
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NS_ConvertUTF16toUTF8 value(aCssText);
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RefPtr<RawServoDeclarationBlock>
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raw = Servo_ParseStyleAttribute(&value).Consume();
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RefPtr<ServoDeclarationBlock> decl = new ServoDeclarationBlock(raw.forget());
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return decl.forget();
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}
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/**
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* An RAII class holding an atom for the given property.
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*/
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class MOZ_STACK_CLASS PropertyAtomHolder
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{
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public:
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explicit PropertyAtomHolder(const nsAString& aProperty)
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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 == eCSSPropertyExtra_variable) {
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mIsCustomProperty = true;
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mAtom = NS_Atomize(
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Substring(aProperty, CSS_CUSTOM_NAME_PREFIX_LENGTH)).take();
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} else {
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mIsCustomProperty = false;
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if (propID != eCSSProperty_UNKNOWN) {
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mAtom = nsCSSProps::AtomForProperty(propID);
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} else {
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mAtom = nullptr;
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}
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}
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}
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~PropertyAtomHolder()
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{
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if (mIsCustomProperty) {
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NS_RELEASE(mAtom);
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}
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}
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explicit operator bool() const { return !!mAtom; }
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nsIAtom* Atom() const { MOZ_ASSERT(mAtom); return mAtom; }
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bool IsCustomProperty() const { return mIsCustomProperty; }
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private:
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nsIAtom* mAtom;
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bool mIsCustomProperty;
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};
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void
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ServoDeclarationBlock::GetPropertyValue(const nsAString& aProperty,
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nsAString& aValue) const
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{
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if (PropertyAtomHolder holder{aProperty}) {
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Servo_DeclarationBlock_GetPropertyValue(
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mRaw, holder.Atom(), holder.IsCustomProperty(), &aValue);
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}
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}
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void
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ServoDeclarationBlock::GetPropertyValueByID(nsCSSPropertyID aPropID,
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nsAString& aValue) const
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{
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nsIAtom* atom = nsCSSProps::AtomForProperty(aPropID);
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Servo_DeclarationBlock_GetPropertyValue(mRaw, atom, false, &aValue);
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}
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bool
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ServoDeclarationBlock::GetPropertyIsImportant(const nsAString& aProperty) const
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{
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if (PropertyAtomHolder holder{aProperty}) {
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return Servo_DeclarationBlock_GetPropertyIsImportant(
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mRaw, holder.Atom(), holder.IsCustomProperty());
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}
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return false;
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}
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void
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ServoDeclarationBlock::RemoveProperty(const nsAString& aProperty)
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{
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AssertMutable();
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if (PropertyAtomHolder holder{aProperty}) {
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Servo_DeclarationBlock_RemoveProperty(mRaw, holder.Atom(),
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holder.IsCustomProperty());
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}
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}
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void
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ServoDeclarationBlock::RemovePropertyByID(nsCSSPropertyID aPropID)
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{
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AssertMutable();
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nsIAtom* atom = nsCSSProps::AtomForProperty(aPropID);
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Servo_DeclarationBlock_RemoveProperty(mRaw, atom, false);
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}
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} // namespace mozilla
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