1 /* 2 * Copyright (C) 2005 Apple Computer 3 * 4 * This library is free software; you can redistribute it and/or 5 * modify it under the terms of the GNU Library General Public 6 * License as published by the Free Software Foundation; either 7 * version 2 of the License, or (at your option) any later version. 8 * 9 * This library is distributed in the hope that it will be useful, 10 * but WITHOUT ANY WARRANTY; without even the implied warranty of 11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 12 * Library General Public License for more details. 13 * 14 * You should have received a copy of the GNU Library General Public License 15 * along with this library; see the file COPYING.LIB. If not, write to 16 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, 17 * Boston, MA 02110-1301, USA. 18 * 19 */ 20 21 #ifndef RenderButton_h 22 #define RenderButton_h 23 24 #include "RenderFlexibleBox.h" 25 #include "Timer.h" 26 #include <wtf/OwnPtr.h> 27 28 namespace WebCore { 29 30 class RenderTextFragment; 31 32 // RenderButtons are just like normal flexboxes except that they will generate an anonymous block child. 33 // For inputs, they will also generate an anonymous RenderText and keep its style and content up 34 // to date as the button changes. 35 class RenderButton : public RenderFlexibleBox { 36 public: 37 explicit RenderButton(Node*); 38 virtual ~RenderButton(); 39 40 virtual const char* renderName() const { return "RenderButton"; } 41 virtual bool isRenderButton() const { return true; } 42 43 virtual void addChild(RenderObject* newChild, RenderObject *beforeChild = 0); 44 virtual void removeChild(RenderObject*); 45 virtual void removeLeftoverAnonymousBlock(RenderBlock*) { } 46 virtual bool createsAnonymousWrapper() const { return true; } 47 48 void setupInnerStyle(RenderStyle*); 49 virtual void updateFromElement(); 50 51 virtual void updateBeforeAfterContent(PseudoId); 52 53 virtual bool hasControlClip() const { return true; } 54 virtual IntRect controlClipRect(int /*tx*/, int /*ty*/) const; 55 56 void setText(const String&); 57 String text() const; 58 59 virtual bool canHaveChildren() const; 60 61 private: 62 virtual void styleWillChange(StyleDifference, const RenderStyle* newStyle); 63 virtual void styleDidChange(StyleDifference, const RenderStyle* oldStyle); 64 65 virtual bool hasLineIfEmpty() const { return true; } 66 67 virtual bool requiresForcedStyleRecalcPropagation() const { return true; } 68 69 void timerFired(Timer<RenderButton>*); 70 71 RenderTextFragment* m_buttonText; 72 RenderBlock* m_inner; 73 74 OwnPtr<Timer<RenderButton> > m_timer; 75 bool m_default; 76 }; 77 78 inline RenderButton* toRenderButton(RenderObject* object) 79 { 80 ASSERT(!object || object->isRenderButton()); 81 return static_cast<RenderButton*>(object); 82 } 83 84 inline const RenderButton* toRenderButton(const RenderObject* object) 85 { 86 ASSERT(!object || object->isRenderButton()); 87 return static_cast<const RenderButton*>(object); 88 } 89 90 // This will catch anyone doing an unnecessary cast. 91 void toRenderButton(const RenderButton*); 92 93 } // namespace WebCore 94 95 #endif // RenderButton_h 96