third_party/WebKit/Source/core/html/HTMLProgressElement.h

/*
 * Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
 *
 * 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.
 *
 */

#ifndef HTMLProgressElement_h
#define HTMLProgressElement_h

#include "core/CoreExport.h"
#include "core/html/LabelableElement.h"

namespace blink {

class LayoutProgress;

class CORE_EXPORT HTMLProgressElement final : public LabelableElement {
    DEFINE_WRAPPERTYPEINFO();
public:
    static const double IndeterminatePosition;
    static const double InvalidPosition;

    static HTMLProgressElement* create(Document&);

    double value() const;
    void setValue(double);

    double max() const;
    void setMax(double);

    double position() const;

    bool canContainRangeEndPoint() const override { return false; }

    DECLARE_VIRTUAL_TRACE();

private:
    explicit HTMLProgressElement(Document&);
    ~HTMLProgressElement() override;

    bool areAuthorShadowsAllowed() const override { return false; }
    bool shouldAppearIndeterminate() const override;
    bool supportLabels() const override { return true; }

    LayoutObject* createLayoutObject(const ComputedStyle&) override;
    LayoutProgress* layoutProgress() const;

    void parseAttribute(const QualifiedName&, const AtomicString&, const AtomicString&) override;

    void attach(const AttachContext& = AttachContext()) override;

    void didElementStateChange();
    void didAddUserAgentShadowRoot(ShadowRoot&) override;
    bool isDeterminate() const;
    void setValueWidthPercentage(double) const;

    Member<Element> m_value;
};

} // namespace blink

#endif // HTMLProgressElement_h