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 28namespace WebCore { 29 30class 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. 35class RenderButton : public RenderFlexibleBox { 36public: 37 explicit RenderButton(Element*); 38 virtual ~RenderButton(); 39 40 virtual const char* renderName() const { return "RenderButton"; } 41 virtual bool isRenderButton() const { return true; } 42 43 virtual bool canBeSelectionLeaf() const OVERRIDE { return node() && node()->rendererIsEditable(); } 44 45 virtual void addChild(RenderObject* newChild, RenderObject *beforeChild = 0); 46 virtual void removeChild(RenderObject*); 47 virtual void removeLeftoverAnonymousBlock(RenderBlock*) { } 48 virtual bool createsAnonymousWrapper() const { return true; } 49 50 void setupInnerStyle(RenderStyle*); 51 virtual void updateFromElement(); 52 53 virtual bool canHaveGeneratedChildren() const OVERRIDE; 54 virtual bool hasControlClip() const { return true; } 55 virtual LayoutRect controlClipRect(const LayoutPoint&) const; 56 57 void setText(const String&); 58 String text() const; 59 60private: 61 virtual void styleWillChange(StyleDifference, const RenderStyle* newStyle); 62 virtual void styleDidChange(StyleDifference, const RenderStyle* oldStyle); 63 64 virtual bool hasLineIfEmpty() const { return node() && node()->toInputElement(); } 65 66 virtual bool requiresForcedStyleRecalcPropagation() const { return true; } 67 68 void timerFired(Timer<RenderButton>*); 69 70 RenderTextFragment* m_buttonText; 71 RenderBlock* m_inner; 72 73 OwnPtr<Timer<RenderButton> > m_timer; 74 bool m_default; 75}; 76 77inline RenderButton* toRenderButton(RenderObject* object) 78{ 79 ASSERT_WITH_SECURITY_IMPLICATION(!object || object->isRenderButton()); 80 return static_cast<RenderButton*>(object); 81} 82 83inline const RenderButton* toRenderButton(const RenderObject* object) 84{ 85 ASSERT_WITH_SECURITY_IMPLICATION(!object || object->isRenderButton()); 86 return static_cast<const RenderButton*>(object); 87} 88 89// This will catch anyone doing an unnecessary cast. 90void toRenderButton(const RenderButton*); 91 92} // namespace WebCore 93 94#endif // RenderButton_h 95