2 * Copyright (C) 2005 Apple Computer
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.
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.
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.
21 #ifndef RenderButton_h
22 #define RenderButton_h
24 #include "core/html/HTMLInputElement.h"
25 #include "core/rendering/RenderFlexibleBox.h"
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 {
34 explicit RenderButton(Element*);
35 virtual ~RenderButton();
37 virtual const char* renderName() const override { return "RenderButton"; }
38 virtual bool isOfType(RenderObjectType type) const override { return type == RenderObjectRenderButton || RenderFlexibleBox::isOfType(type); }
40 virtual bool canBeSelectionLeaf() const override { return node() && node()->hasEditableStyle(); }
41 virtual bool canCollapseAnonymousBlockChild() const override { return true; }
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; }
48 // <button> should allow whitespace even though RenderFlexibleBox doesn't.
49 virtual bool canHaveWhitespaceChildren() const override { return true; }
51 virtual bool canHaveGeneratedChildren() const override;
52 virtual bool hasControlClip() const override { return true; }
53 virtual LayoutRect controlClipRect(const LayoutPoint&) const override;
55 virtual int baselinePosition(FontBaseline, bool firstLine, LineDirectionMode, LinePositionMode) const override;
58 virtual void updateAnonymousChildStyle(const RenderObject* child, RenderStyle* childStyle) const override;
60 virtual bool hasLineIfEmpty() const override { return isHTMLInputElement(node()); }
65 DEFINE_RENDER_OBJECT_TYPE_CASTS(RenderButton, isRenderButton());
69 #endif // RenderButton_h