/* * Copyright (C) 1999 Lars Knoll ([email protected]) * (C) 1999 Antti Koivisto ([email protected]) * (C) 2007 David Smith ([email protected]) * Copyright (C) 2003-2013 Apple Inc. All rights reserved. * Copyright (C) Research In Motion Limited 2010. All rights reserved. * Copyright (C) 2013 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 THIRD_PARTY_BLINK_RENDERER_CORE_LAYOUT_LAYOUT_BLOCK_FLOW_H_ #define THIRD_PARTY_BLINK_RENDERER_CORE_LAYOUT_LAYOUT_BLOCK_FLOW_H_ #include "base/dcheck_is_on.h" #include "third_party/blink/renderer/core/core_export.h" #include "third_party/blink/renderer/core/layout/inline/inline_node_data.h" #include "third_party/blink/renderer/core/layout/layout_block.h" namespace blink { class LayoutMultiColumnFlowThread; struct InlineNodeData; // LayoutBlockFlow is the class that implements a block container in CSS 2.1. // http://www.w3.org/TR/CSS21/visuren.html#block-boxes // // LayoutBlockFlows are the only LayoutObject allowed to own floating objects // (aka floats): http://www.w3.org/TR/CSS21/visuren.html#floats . // // LayoutBlockFlow enforces the following invariant: // // All in-flow children (ie excluding floating and out-of-flow positioned) are // either all blocks or all inline boxes. // // This is suggested by CSS to correctly the layout mixed inlines and blocks // lines (http://www.w3.org/TR/CSS21/visuren.html#anonymous-block-level). See // LayoutBlock::addChild about how the invariant is enforced. class CORE_EXPORT LayoutBlockFlow : public LayoutBlock { … }; template <> struct DowncastTraits<LayoutBlockFlow> { … }; } // namespace blink #endif // THIRD_PARTY_BLINK_RENDERER_CORE_LAYOUT_LAYOUT_BLOCK_FLOW_H_
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