File: PluginViewBase.h

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/*
 * Copyright (C) 2010 Apple 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:
 * 1.  Redistributions of source code must retain the above copyright
 * notice, this list of conditions and the following disclaimer.
 * 2.  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.
 *
 * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS 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 APPLE INC. OR ITS 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.
 */

#pragma once

#include "PlatformLayer.h"
#include "ScrollTypes.h"
#include "Widget.h"

#if PLATFORM(COCOA)
typedef struct objc_object* id;
#endif

namespace WebCore {

class Element;
class Scrollbar;

// FIXME: Move these virtual functions all into the Widget class and get rid of this class.
class PluginViewBase : public Widget {
public:
    virtual PlatformLayer* platformLayer() const { return 0; }
#if PLATFORM(IOS_FAMILY)
    virtual bool willProvidePluginLayer() const { return false; }
    virtual void attachPluginLayer() { }
    virtual void detachPluginLayer() { }
#endif

    virtual bool scroll(ScrollDirection, ScrollGranularity) { return false; }
    virtual ScrollPosition scrollPositionForTesting() const { return { }; }

    virtual Scrollbar* horizontalScrollbar() { return nullptr; }
    virtual Scrollbar* verticalScrollbar() { return nullptr; }

    virtual bool wantsWheelEvents() { return false; }
    virtual bool shouldAllowNavigationFromDrags() const { return false; }
    virtual void willDetachRenderer() { }

#if PLATFORM(COCOA)
    virtual id accessibilityAssociatedPluginParentForElement(Element*) const { return nullptr; }
#endif
    
protected:
    explicit PluginViewBase(PlatformWidget widget = 0) : Widget(widget) { }

private:
    bool isPluginViewBase() const final { return true; }
};

} // namespace WebCore

SPECIALIZE_TYPE_TRAITS_WIDGET(PluginViewBase, isPluginViewBase())