1 /* 2 * Copyright (C) 2013 Adobe Systems Incorporated. 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 * 8 * 1. Redistributions of source code must retain the above 9 * copyright notice, this list of conditions and the following 10 * disclaimer. 11 * 2. Redistributions in binary form must reproduce the above 12 * copyright notice, this list of conditions and the following 13 * disclaimer in the documentation and/or other materials 14 * provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDER "AS IS" AND ANY 17 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 19 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER BE 20 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, 21 * OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 22 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR 23 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR 25 * TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF 26 * THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27 * SUCH DAMAGE. 28 */ 29 30 #ifndef RenderNamedFlowFragment_h 31 #define RenderNamedFlowFragment_h 32 33 #include "core/rendering/RenderRegion.h" 34 35 namespace WebCore { 36 37 class Element; 38 class RenderStyle; 39 40 // RenderNamedFlowFragment represents a region that is responsible for the fragmentation of 41 // the RenderNamedFlowThread content. 42 // 43 // A RenderNamedFlowFragment object is created as an anonymous child for a RenderBlockFlow object 44 // that has a valid -webkit-flow-from property. 45 // 46 // This allows a non-replaced block to behave like a region if needed, following the CSSRegions specification: 47 // http://dev.w3.org/csswg/css-regions/#the-flow-from-property. 48 // list-item, table-caption, table-cell can become regions in addition to block | inline-block. 49 50 class RenderNamedFlowFragment FINAL : public RenderRegion { 51 public: 52 virtual ~RenderNamedFlowFragment(); 53 static RenderNamedFlowFragment* createAnonymous(Document*); 54 55 void setStyleForNamedFlowFragment(const RenderStyle*); 56 isRenderNamedFlowFragment()57 virtual bool isRenderNamedFlowFragment() const OVERRIDE { return true; } 58 virtual void styleDidChange(StyleDifference, const RenderStyle* oldStyle) OVERRIDE; 59 60 virtual LayoutUnit maxPageLogicalHeight() const OVERRIDE; 61 62 protected: 63 RenderNamedFlowFragment(); 64 65 private: 66 virtual bool shouldHaveAutoLogicalHeight() const OVERRIDE; renderName()67 virtual const char* renderName() const OVERRIDE { return "RenderNamedFlowFragment"; } 68 }; 69 70 DEFINE_RENDER_OBJECT_TYPE_CASTS(RenderNamedFlowFragment, isRenderNamedFlowFragment()); 71 72 } 73 74 #endif // RenderNamedFlowFragment_h 75