1 /* 2 * Copyright (C) 2004 Allan Sandfeld Jensen (kde (at) 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 28 namespace WebCore { 29 30 class CounterNode; 31 32 class RenderCounter : public RenderText { 33 public: 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 private: 44 virtual const char* renderName() const; 45 virtual bool isCounter() const; 46 virtual PassRefPtr<StringImpl> originalText() const; 47 48 virtual void computePreferredLogicalWidths(float leadWidth); 49 50 // Removes the reference to the CounterNode associated with this renderer. 51 // This is used to cause a counter display update when the CounterNode tree changes. 52 void invalidate(); 53 54 CounterContent m_counter; 55 CounterNode* m_counterNode; 56 RenderCounter* m_nextForSameCounter; 57 friend class CounterNode; 58 }; 59 60 inline RenderCounter* toRenderCounter(RenderObject* object) 61 { 62 ASSERT(!object || object->isCounter()); 63 return static_cast<RenderCounter*>(object); 64 } 65 66 // This will catch anyone doing an unnecessary cast. 67 void toRenderCounter(const RenderCounter*); 68 69 } // namespace WebCore 70 71 #ifndef NDEBUG 72 // Outside the WebCore namespace for ease of invocation from gdb. 73 void showCounterRendererTree(const WebCore::RenderObject*, const char* counterName = 0); 74 #endif 75 76 #endif // RenderCounter_h 77
