1/*
2 * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
3 * Copyright (C) 2004, 2005, 2006, 2009, 2010 Apple Inc. All rights reserved.
4 *
5 * This library is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU Library General Public
7 * License as published by the Free Software Foundation; either
8 * version 2 of the License, or (at your option) any later version.
9 *
10 * This library is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
13 * Library General Public License for more details.
14 *
15 * You should have received a copy of the GNU Library General Public License
16 * along with this library; see the file COPYING.LIB.  If not, write to
17 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
18 * Boston, MA 02110-1301, USA.
19 *
20 */
21
22#ifndef RenderWidget_h
23#define RenderWidget_h
24
25#include "core/rendering/RenderReplaced.h"
26#include "platform/Widget.h"
27
28namespace WebCore {
29
30class RenderWidget : public RenderReplaced {
31public:
32    virtual ~RenderWidget();
33
34    Widget* widget() const { return m_widget.get(); }
35    virtual void setWidget(PassRefPtr<Widget>);
36
37    void updateWidgetPosition();
38    void widgetPositionsUpdated();
39
40    void setIsOverlapped(bool);
41
42    void ref() { ++m_refCount; }
43    void deref();
44
45    class UpdateSuspendScope {
46    public:
47        UpdateSuspendScope();
48        ~UpdateSuspendScope();
49    };
50
51protected:
52    explicit RenderWidget(Element*);
53
54    void clearWidget();
55
56    virtual void styleDidChange(StyleDifference, const RenderStyle* oldStyle) OVERRIDE FINAL;
57    virtual void layout();
58    virtual void paint(PaintInfo&, const LayoutPoint&);
59    virtual CursorDirective getCursor(const LayoutPoint&, Cursor&) const;
60    virtual bool nodeAtPoint(const HitTestRequest&, HitTestResult&, const HitTestLocation& locationInContainer, const LayoutPoint& accumulatedOffset, HitTestAction) OVERRIDE;
61
62    virtual void paintContents(PaintInfo&, const LayoutPoint&);
63
64private:
65    virtual bool isWidget() const OVERRIDE FINAL { return true; }
66
67    virtual void willBeDestroyed() OVERRIDE FINAL;
68    virtual void destroy() OVERRIDE FINAL;
69
70    bool setWidgetGeometry(const LayoutRect&);
71    bool updateWidgetGeometry();
72
73    RefPtr<Widget> m_widget;
74    FrameView* m_frameView;
75    IntRect m_clipRect; // The rectangle needs to remain correct after scrolling, so it is stored in content view coordinates, and not clipped to window.
76    int m_refCount;
77};
78
79DEFINE_RENDER_OBJECT_TYPE_CASTS(RenderWidget, isWidget());
80
81} // namespace WebCore
82
83#endif // RenderWidget_h
84