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      1 /*
      2  * Copyright (C) 2009 Google 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 are
      6  * met:
      7  *
      8  *     * Redistributions of source code must retain the above copyright
      9  * notice, this list of conditions and the following disclaimer.
     10  *     * Redistributions in binary form must reproduce the above
     11  * copyright notice, this list of conditions and the following disclaimer
     12  * in the documentation and/or other materials provided with the
     13  * distribution.
     14  *     * Neither the name of Google Inc. nor the names of its
     15  * contributors may be used to endorse or promote products derived from
     16  * this software without specific prior written permission.
     17  *
     18  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
     19  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
     20  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
     21  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
     22  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
     23  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
     24  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     25  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     26  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     27  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
     28  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     29  */
     30 
     31 #ifndef RenderRubyBase_h
     32 #define RenderRubyBase_h
     33 
     34 #include "RenderBlock.h"
     35 
     36 namespace WebCore {
     37 
     38 class RenderRubyRun;
     39 
     40 class RenderRubyBase : public RenderBlock {
     41 public:
     42     RenderRubyBase(Node*);
     43     virtual ~RenderRubyBase();
     44 
     45     virtual const char* renderName() const { return "RenderRubyBase (anonymous)"; }
     46 
     47     virtual bool isRubyBase() const { return true; }
     48 
     49     virtual bool isChildAllowed(RenderObject*, RenderStyle*) const;
     50 
     51 private:
     52     virtual ETextAlign textAlignmentForLine(bool endsWithSoftBreak) const;
     53     virtual void adjustInlineDirectionLineBounds(int expansionOpportunityCount, float& logicalLeft, float& logicalWidth) const;
     54 
     55     bool hasOnlyWrappedInlineChildren(RenderObject* beforeChild = 0) const;
     56 
     57     void moveChildren(RenderRubyBase* toBase, RenderObject* fromBeforeChild = 0);
     58     void moveInlineChildren(RenderRubyBase* toBase, RenderObject* fromBeforeChild = 0);
     59     void moveBlockChildren(RenderRubyBase* toBase, RenderObject* fromBeforeChild = 0);
     60     void mergeBlockChildren(RenderRubyBase* toBase, RenderObject* fromBeforeChild = 0);
     61 
     62     RenderRubyRun* rubyRun() const;
     63 
     64     // Allow RenderRubyRun to manipulate the children within ruby bases.
     65     friend class RenderRubyRun;
     66 };
     67 
     68 } // namespace WebCore
     69 
     70 #endif // RenderRubyBase_h
     71