109 lines
3.4 KiB
C++
109 lines
3.4 KiB
C++
/*
|
|
* Copyright (C) Research In Motion Limited 2010. All rights reserved.
|
|
* Copyright (C) 2018-2019 Apple Inc. All rights reserved.
|
|
*
|
|
* This library is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU Library General Public
|
|
* License as published by the Free Software Foundation; either
|
|
* version 2 of the License, or (at your option) any later version.
|
|
*
|
|
* This library is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
* Library General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU Library General Public License
|
|
* along with this library; see the file COPYING.LIB. If not, write to
|
|
* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
|
|
* Boston, MA 02110-1301, USA.
|
|
*/
|
|
|
|
#pragma once
|
|
|
|
#include "SVGPropertyOwner.h"
|
|
#include <wtf/RefCounted.h>
|
|
#include <wtf/text/WTFString.h>
|
|
|
|
namespace WebCore {
|
|
|
|
enum class SVGPropertyAccess : uint8_t { ReadWrite, ReadOnly };
|
|
enum class SVGPropertyState : uint8_t { Clean, Dirty };
|
|
|
|
class SVGProperty : public RefCounted<SVGProperty> {
|
|
public:
|
|
virtual ~SVGProperty() = default;
|
|
|
|
// Managing the relationship with the owner.
|
|
bool isAttached() const { return m_owner; }
|
|
virtual void attach(SVGPropertyOwner* owner, SVGPropertyAccess access)
|
|
{
|
|
ASSERT(!m_owner);
|
|
ASSERT(m_state == SVGPropertyState::Clean);
|
|
m_owner = owner;
|
|
m_access = access;
|
|
}
|
|
|
|
virtual void detach()
|
|
{
|
|
m_owner = nullptr;
|
|
m_access = SVGPropertyAccess::ReadWrite;
|
|
m_state = SVGPropertyState::Clean;
|
|
}
|
|
|
|
void reattach(SVGPropertyOwner* owner, SVGPropertyAccess access)
|
|
{
|
|
ASSERT_UNUSED(owner, owner == m_owner);
|
|
m_access = access;
|
|
m_state = SVGPropertyState::Clean;
|
|
}
|
|
|
|
const SVGElement* contextElement() const
|
|
{
|
|
if (!m_owner)
|
|
return nullptr;
|
|
return m_owner->attributeContextElement();
|
|
}
|
|
|
|
void commitChange()
|
|
{
|
|
if (!m_owner)
|
|
return;
|
|
m_owner->commitPropertyChange(this);
|
|
}
|
|
|
|
// DOM access.
|
|
SVGPropertyAccess access() const { return m_access; }
|
|
bool isReadOnly() const { return m_access == SVGPropertyAccess::ReadOnly; }
|
|
|
|
// Synchronizing the SVG attribute and its reflection here.
|
|
bool isDirty() const { return m_state == SVGPropertyState::Dirty; }
|
|
void setDirty() { m_state = SVGPropertyState::Dirty; }
|
|
std::optional<String> synchronize()
|
|
{
|
|
if (m_state == SVGPropertyState::Clean)
|
|
return std::nullopt;
|
|
m_state = SVGPropertyState::Clean;
|
|
return valueAsString();
|
|
}
|
|
|
|
// This is used when calling setAttribute().
|
|
virtual String valueAsString() const { return emptyString(); }
|
|
|
|
// Visual Studio doesn't seem to see these private constructors from subclasses.
|
|
// FIXME: See what it takes to remove this hack.
|
|
#if !COMPILER(MSVC)
|
|
protected:
|
|
#endif
|
|
SVGProperty(SVGPropertyOwner* owner = nullptr, SVGPropertyAccess access = SVGPropertyAccess::ReadWrite)
|
|
: m_owner(owner)
|
|
, m_access(access)
|
|
{
|
|
}
|
|
|
|
SVGPropertyOwner* m_owner { nullptr };
|
|
SVGPropertyAccess m_access { SVGPropertyAccess::ReadWrite };
|
|
SVGPropertyState m_state { SVGPropertyState::Clean };
|
|
};
|
|
|
|
} // namespace WebCore
|