1/* 2 * Copyright (C) 2004 Allan Sandfeld Jensen (kde@carewolf.com) 3 * Copyright (C) 2006, 2007, 2008, 2009 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 RenderCounter_h 23#define RenderCounter_h 24 25#include "CounterContent.h" 26#include "RenderText.h" 27 28namespace WebCore { 29 30class CounterNode; 31 32class RenderCounter final : public RenderText { 33public: 34 RenderCounter(Document&, const CounterContent&); 35 virtual ~RenderCounter(); 36 37 static void destroyCounterNodes(RenderObject*); 38 static void destroyCounterNode(RenderObject*, const AtomicString& identifier); 39 static void rendererSubtreeAttached(RenderObject*); 40 static void rendererRemovedFromTree(RenderObject&); 41 static void rendererStyleChanged(RenderObject*, const RenderStyle* oldStyle, const RenderStyle* newStyle); 42 43 void updateCounter(); 44 45protected: 46 virtual void willBeDestroyed(); 47 48private: 49 virtual const char* renderName() const; 50 virtual bool isCounter() const; 51 virtual String originalText() const; 52 53 virtual void computePreferredLogicalWidths(float leadWidth) override; 54 55 // Removes the reference to the CounterNode associated with this renderer. 56 // This is used to cause a counter display update when the CounterNode tree changes. 57 void invalidate(); 58 59 CounterContent m_counter; 60 CounterNode* m_counterNode; 61 RenderCounter* m_nextForSameCounter; 62 friend class CounterNode; 63}; 64 65RENDER_OBJECT_TYPE_CASTS(RenderCounter, isCounter()) 66 67} // namespace WebCore 68 69#ifndef NDEBUG 70// Outside the WebCore namespace for ease of invocation from gdb. 71void showCounterRendererTree(const WebCore::RenderObject*, const char* counterName = 0); 72#endif 73 74#endif // RenderCounter_h 75