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
renderName()40 virtual const char* renderName() const { return "RenderButton"; }
isRenderButton()41 virtual bool isRenderButton() const { return true; }
42
43 virtual void addChild(RenderObject* newChild, RenderObject *beforeChild = 0);
44 virtual void removeChild(RenderObject*);
removeLeftoverAnonymousBlock(RenderBlock *)45 virtual void removeLeftoverAnonymousBlock(RenderBlock*) { }
createsAnonymousWrapper()46 virtual bool createsAnonymousWrapper() const { return true; }
47
48 void setupInnerStyle(RenderStyle*);
49 virtual void updateFromElement();
50
51 virtual void updateBeforeAfterContent(PseudoId);
52
hasControlClip()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
hasLineIfEmpty()65 virtual bool hasLineIfEmpty() const { return true; }
66
requiresForcedStyleRecalcPropagation()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
toRenderButton(RenderObject * object)78 inline RenderButton* toRenderButton(RenderObject* object)
79 {
80 ASSERT(!object || object->isRenderButton());
81 return static_cast<RenderButton*>(object);
82 }
83
toRenderButton(const RenderObject * object)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