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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#include "mozilla/ServoDeclarationBlock.h"
#include "mozilla/ServoBindings.h"
#include "nsCSSProps.h"
namespace mozilla {
/* static */ already_AddRefed<ServoDeclarationBlock>
ServoDeclarationBlock::FromCssText(const nsAString& aCssText)
{
NS_ConvertUTF16toUTF8 value(aCssText);
RefPtr<RawServoDeclarationBlock>
raw = Servo_ParseStyleAttribute(&value).Consume();
RefPtr<ServoDeclarationBlock> decl = new ServoDeclarationBlock(raw.forget());
return decl.forget();
}
/**
* An RAII class holding an atom for the given property.
*/
class MOZ_STACK_CLASS PropertyAtomHolder
{
public:
explicit PropertyAtomHolder(const nsAString& aProperty)
{
nsCSSPropertyID propID =
nsCSSProps::LookupProperty(aProperty, CSSEnabledState::eForAllContent);
if (propID == eCSSPropertyExtra_variable) {
mIsCustomProperty = true;
mAtom = NS_Atomize(
Substring(aProperty, CSS_CUSTOM_NAME_PREFIX_LENGTH)).take();
} else {
mIsCustomProperty = false;
if (propID != eCSSProperty_UNKNOWN) {
mAtom = nsCSSProps::AtomForProperty(propID);
} else {
mAtom = nullptr;
}
}
}
~PropertyAtomHolder()
{
if (mIsCustomProperty) {
NS_RELEASE(mAtom);
}
}
explicit operator bool() const { return !!mAtom; }
nsIAtom* Atom() const { MOZ_ASSERT(mAtom); return mAtom; }
bool IsCustomProperty() const { return mIsCustomProperty; }
private:
nsIAtom* mAtom;
bool mIsCustomProperty;
};
void
ServoDeclarationBlock::GetPropertyValue(const nsAString& aProperty,
nsAString& aValue) const
{
if (PropertyAtomHolder holder{aProperty}) {
Servo_DeclarationBlock_GetPropertyValue(
mRaw, holder.Atom(), holder.IsCustomProperty(), &aValue);
}
}
void
ServoDeclarationBlock::GetPropertyValueByID(nsCSSPropertyID aPropID,
nsAString& aValue) const
{
nsIAtom* atom = nsCSSProps::AtomForProperty(aPropID);
Servo_DeclarationBlock_GetPropertyValue(mRaw, atom, false, &aValue);
}
bool
ServoDeclarationBlock::GetPropertyIsImportant(const nsAString& aProperty) const
{
if (PropertyAtomHolder holder{aProperty}) {
return Servo_DeclarationBlock_GetPropertyIsImportant(
mRaw, holder.Atom(), holder.IsCustomProperty());
}
return false;
}
void
ServoDeclarationBlock::RemoveProperty(const nsAString& aProperty)
{
AssertMutable();
if (PropertyAtomHolder holder{aProperty}) {
Servo_DeclarationBlock_RemoveProperty(mRaw, holder.Atom(),
holder.IsCustomProperty());
}
}
void
ServoDeclarationBlock::RemovePropertyByID(nsCSSPropertyID aPropID)
{
AssertMutable();
nsIAtom* atom = nsCSSProps::AtomForProperty(aPropID);
Servo_DeclarationBlock_RemoveProperty(mRaw, atom, false);
}
} // namespace mozilla
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