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// Copyright 2008, Google Inc.
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
//    * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
//    * Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following disclaimer
// in the documentation and/or other materials provided with the
// distribution.
//    * Neither the name of Google Inc. nor the names of its
// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

#ifndef FramelessScrollView_h
#define FramelessScrollView_h

#include "FrameView.h"

namespace WebCore {
    
    class PlatformKeyboardEvent;

    // A FramelessScrollView is a ScrollView that can be used to render custom
    // content, which does not have an associated Frame.  This extends from
    // FrameView because much of WebCore unfortunately assumes that a
    // ScrollView is a FrameView.
    //
    // TODO: It may be better to just develop a custom subclass of Widget that
    // can have scroll bars for this instead of trying to reuse ScrollView.
    //
    class FramelessScrollView : public FrameView {
    public:
        FramelessScrollView() : FrameView(0) {}

        virtual IntRect windowClipRect() const;

        // Event handlers
        virtual bool handleMouseDownEvent(const PlatformMouseEvent&) = 0;
        virtual bool handleMouseMoveEvent(const PlatformMouseEvent&) = 0;
        virtual bool handleMouseReleaseEvent(const PlatformMouseEvent&) = 0;
        virtual bool handleWheelEvent(const PlatformWheelEvent&) = 0;
        virtual bool handleKeyEvent(const PlatformKeyboardEvent&) = 0;
    };
}

#endif // FramelessScrollView_h