Implement HTMLMarqueeElement's animation in private scripts

Source/core/rendering/RenderMarquee.h

-/*
- * Copyright (C) 2003 Apple Computer, Inc.
- *
- * Portions are Copyright (C) 1998 Netscape Communications Corporation.
- *
- * Other contributors:
- *   Robert O'Callahan <roc+@cs.cmu.edu>
- *   David Baron <dbaron@fas.harvard.edu>
- *   Christian Biesinger <cbiesinger@web.de>
- *   Randall Jesup <rjesup@wgate.com>
- *   Roland Mainz <roland.mainz@informatik.med.uni-giessen.de>
- *   Josh Soref <timeless@mac.com>
- *   Boris Zbarsky <bzbarsky@mit.edu>
- *
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation; either
- * version 2.1 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
- * Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
- *
- * Alternatively, the contents of this file may be used under the terms
- * of either the Mozilla Public License Version 1.1, found at
- * http://www.mozilla.org/MPL/ (the "MPL") or the GNU General Public
- * License Version 2.0, found at http://www.fsf.org/copyleft/gpl.html
- * (the "GPL"), in which case the provisions of the MPL or the GPL are
- * applicable instead of those above.  If you wish to allow use of your
- * version of this file only under the terms of one of those two
- * licenses (the MPL or the GPL) and not to allow others to use your
- * version of this file under the LGPL, indicate your decision by
- * deletingthe provisions above and replace them with the notice and
- * other provisions required by the MPL or the GPL, as the case may be.
- * If you do not delete the provisions above, a recipient may use your
- * version of this file under any of the LGPL, the MPL or the GPL.
- */
-
-#ifndef RenderMarquee_h
-#define RenderMarquee_h
-
-#include "core/html/HTMLMarqueeElement.h"
-#include "core/rendering/RenderBlockFlow.h"
-#include "core/rendering/style/RenderStyleConstants.h"
-#include "platform/Length.h"
-#include "platform/Timer.h"
-
-namespace blink {
-
-// This class handles the auto-scrolling for <marquee>
-class RenderMarquee FINAL : public RenderBlockFlow {
-public:
-    explicit RenderMarquee(HTMLMarqueeElement*);
-    virtual ~RenderMarquee();
-
-    int speed() const { return m_speed; }
-    int marqueeSpeed() const;
-
-    EMarqueeDirection reverseDirection() const { return static_cast<EMarqueeDirection>(-direction()); }
-    EMarqueeDirection direction() const;
-
-    bool isHorizontal() const;
-
-    int computePosition(EMarqueeDirection, bool stopAtClientEdge);
-
-    void start();
-    void suspend();
-    void stop();
-
-    // FIXME: This function should be private and called at layout time.
-    // However <marquee> tests are very timing dependent so we need to keep the existing timing.
-    void updateMarqueePosition();
-
-    void timerFired();
-
-private:
-    virtual const char* renderName() const OVERRIDE;
-
-    virtual bool isMarquee() const OVERRIDE { return true; }
-
-    virtual void styleDidChange(StyleDifference, const RenderStyle* oldStyle) OVERRIDE;
-
-    virtual void layoutBlock(bool relayoutChildren) OVERRIDE;
-
-    int m_currentLoop;
-    int m_totalLoops;
-    Timer<HTMLMarqueeElement> m_timer;
-    int m_start;
-    int m_end;
-    int m_speed;
-    Length m_height;
-    bool m_reset: 1;
-    bool m_suspended : 1;
-    bool m_stopped : 1;
-    EMarqueeDirection m_direction : 4;
-};
-
-DEFINE_RENDER_OBJECT_TYPE_CASTS(RenderMarquee, isMarquee());
-
-} // namespace blink
-
-#endif // RenderMarquee_h