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      1 /*
      2  * Copyright (C) 2010 Apple Inc. All rights reserved.
      3  *
      4  * Redistribution and use in source and binary forms, with or without
      5  * modification, are permitted provided that the following conditions
      6  * are met:
      7  * 1. Redistributions of source code must retain the above copyright
      8  *    notice, this list of conditions and the following disclaimer.
      9  * 2. Redistributions in binary form must reproduce the above copyright
     10  *    notice, this list of conditions and the following disclaimer in the
     11  *    documentation and/or other materials provided with the distribution.
     12  *
     13  * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY
     14  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     15  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     16  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE COMPUTER, INC. OR
     17  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
     18  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
     19  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
     20  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
     21  * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     22  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
     23  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     24  */
     25 
     26 #ifndef RenderIFrame_h
     27 #define RenderIFrame_h
     28 
     29 #include "core/rendering/RenderPart.h"
     30 
     31 namespace WebCore {
     32 
     33 class RenderView;
     34 
     35 class RenderIFrame FINAL : public RenderPart {
     36 public:
     37     explicit RenderIFrame(Element*);
     38 
     39     bool isSeamless() const;
     40 
     41 private:
     42     virtual LayoutUnit minPreferredLogicalWidth() const OVERRIDE;
     43     virtual LayoutUnit maxPreferredLogicalWidth() const OVERRIDE;
     44 
     45     virtual bool shouldComputeSizeAsReplaced() const OVERRIDE;
     46     virtual bool isInlineBlockOrInlineTable() const OVERRIDE;
     47 
     48     virtual void layout() OVERRIDE;
     49 
     50     virtual bool isRenderIFrame() const OVERRIDE { return true; }
     51 
     52     virtual const char* renderName() const OVERRIDE { return "RenderPartObject"; } // Lying for now to avoid breaking tests
     53 
     54     virtual bool requiresLayer() const OVERRIDE;
     55 
     56     void layoutSeamlessly();
     57 
     58     RenderView* contentRootRenderer() const;
     59 };
     60 
     61 inline RenderIFrame* toRenderIFrame(RenderObject* object)
     62 {
     63     ASSERT_WITH_SECURITY_IMPLICATION(!object || object->isRenderIFrame());
     64     return static_cast<RenderIFrame*>(object);
     65 }
     66 
     67 inline const RenderIFrame* toRenderIFrame(const RenderObject* object)
     68 {
     69     ASSERT_WITH_SECURITY_IMPLICATION(!object || object->isRenderIFrame());
     70     return static_cast<const RenderIFrame*>(object);
     71 }
     72 
     73 // This will catch anyone doing an unnecessary cast.
     74 void toRenderIFrame(const RenderIFrame*);
     75 
     76 
     77 } // namespace WebCore
     78 
     79 #endif // RenderIFrame_h
     80