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 "core/html/HTMLInputElement.h" 25 #include "core/rendering/RenderFlexibleBox.h" 26 27 namespace blink { 28 29 // RenderButtons are just like normal flexboxes except that they will generate an anonymous block child. 30 // For inputs, they will also generate an anonymous RenderText and keep its style and content up 31 // to date as the button changes. 32 class RenderButton FINAL : public RenderFlexibleBox { 33 public: 34 explicit RenderButton(Element*); 35 virtual ~RenderButton(); 36 37 virtual const char* renderName() const OVERRIDE { return "RenderButton"; } 38 virtual bool isRenderButton() const OVERRIDE { return true; } 39 40 virtual bool canBeSelectionLeaf() const OVERRIDE { return node() && node()->hasEditableStyle(); } 41 virtual bool canCollapseAnonymousBlockChild() const OVERRIDE { return true; } 42 43 virtual void addChild(RenderObject* newChild, RenderObject *beforeChild = 0) OVERRIDE; 44 virtual void removeChild(RenderObject*) OVERRIDE; 45 virtual void removeLeftoverAnonymousBlock(RenderBlock*) OVERRIDE { } 46 virtual bool createsAnonymousWrapper() const OVERRIDE { return true; } 47 48 // <button> should allow whitespace even though RenderFlexibleBox doesn't. 49 virtual bool canHaveWhitespaceChildren() const OVERRIDE { return true; } 50 51 virtual bool canHaveGeneratedChildren() const OVERRIDE; 52 virtual bool hasControlClip() const OVERRIDE { return true; } 53 virtual LayoutRect controlClipRect(const LayoutPoint&) const OVERRIDE; 54 55 virtual int baselinePosition(FontBaseline, bool firstLine, LineDirectionMode, LinePositionMode) const OVERRIDE; 56 57 private: 58 virtual void updateAnonymousChildStyle(const RenderObject* child, RenderStyle* childStyle) const OVERRIDE; 59 60 virtual bool hasLineIfEmpty() const OVERRIDE { return isHTMLInputElement(node()); } 61 62 RenderBlock* m_inner; 63 }; 64 65 DEFINE_RENDER_OBJECT_TYPE_CASTS(RenderButton, isRenderButton()); 66 67 } // namespace blink 68 69 #endif // RenderButton_h 70
