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1 /* | 1 /* |
2 * Copyright (C) 2008, 2009 Apple Inc. All Rights Reserved. | 2 * Copyright (C) 2008, 2009 Apple Inc. All Rights Reserved. |
3 * | 3 * |
4 * Redistribution and use in source and binary forms, with or without | 4 * Redistribution and use in source and binary forms, with or without |
5 * modification, are permitted provided that the following conditions | 5 * modification, are permitted provided that the following conditions |
6 * are met: | 6 * are met: |
7 * 1. Redistributions of source code must retain the above copyright | 7 * 1. Redistributions of source code must retain the above copyright |
8 * notice, this list of conditions and the following disclaimer. | 8 * notice, this list of conditions and the following disclaimer. |
9 * 2. Redistributions in binary form must reproduce the above copyright | 9 * 2. Redistributions in binary form must reproduce the above copyright |
10 * notice, this list of conditions and the following disclaimer in the | 10 * notice, this list of conditions and the following disclaimer in the |
11 * documentation and/or other materials provided with the distribution. | 11 * documentation and/or other materials provided with the distribution. |
12 * | 12 * |
13 * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY | 13 * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY |
14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | 14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR | 15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR | 16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR |
17 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, | 17 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, |
18 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, | 18 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
19 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR | 19 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR |
20 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY | 20 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY |
21 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | 21 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE | 22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
23 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | 23 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
24 */ | 24 */ |
25 | 25 |
26 #ifndef RenderScrollbar_h | 26 #ifndef RenderScrollbar_h |
27 #define RenderScrollbar_h | 27 #define RenderScrollbar_h |
28 | 28 |
29 #include "core/rendering/style/RenderStyleConstants.h" | 29 #include "core/rendering/style/RenderStyleConstants.h" |
| 30 #include "platform/heap/Handle.h" |
30 #include "platform/scroll/Scrollbar.h" | 31 #include "platform/scroll/Scrollbar.h" |
31 #include "wtf/HashMap.h" | 32 #include "wtf/HashMap.h" |
32 | 33 |
33 namespace blink { | 34 namespace blink { |
34 | 35 |
35 class LocalFrame; | 36 class LocalFrame; |
36 class Node; | 37 class Node; |
37 class RenderBox; | 38 class RenderBox; |
38 class RenderScrollbarPart; | 39 class RenderScrollbarPart; |
39 class RenderStyle; | 40 class RenderStyle; |
40 | 41 |
41 class RenderScrollbar final : public Scrollbar { | 42 class RenderScrollbar final : public Scrollbar { |
42 protected: | 43 #if ENABLE(OILPAN) |
43 RenderScrollbar(ScrollableArea*, ScrollbarOrientation, Node*, LocalFrame*); | 44 USING_PRE_FINALIZER(RenderScrollbar, destroyParts); |
44 | 45 #endif |
45 public: | 46 public: |
46 friend class Scrollbar; | 47 static PassRefPtrWillBeRawPtr<Scrollbar> createCustomScrollbar(ScrollableAre
a*, ScrollbarOrientation, Node*, LocalFrame* owningFrame = 0); |
47 static PassRefPtr<Scrollbar> createCustomScrollbar(ScrollableArea*, Scrollba
rOrientation, Node*, LocalFrame* owningFrame = 0); | |
48 virtual ~RenderScrollbar(); | 48 virtual ~RenderScrollbar(); |
49 | 49 |
50 RenderBox* owningRenderer() const; | 50 RenderBox* owningRenderer() const; |
51 | 51 |
52 IntRect buttonRect(ScrollbarPart); | 52 IntRect buttonRect(ScrollbarPart); |
53 IntRect trackRect(int startLength, int endLength); | 53 IntRect trackRect(int startLength, int endLength); |
54 IntRect trackPieceRectWithMargins(ScrollbarPart, const IntRect&); | 54 IntRect trackPieceRectWithMargins(ScrollbarPart, const IntRect&); |
55 | 55 |
56 int minimumThumbLength(); | 56 int minimumThumbLength(); |
57 | 57 |
58 virtual bool isOverlayScrollbar() const override { return false; } | 58 virtual bool isOverlayScrollbar() const override { return false; } |
59 | 59 |
60 RenderScrollbarPart* getPart(ScrollbarPart partType) { return m_parts.get(pa
rtType); } | 60 RenderScrollbarPart* getPart(ScrollbarPart partType) { return m_parts.get(pa
rtType); } |
61 | 61 |
| 62 virtual void trace(Visitor*) override; |
| 63 |
| 64 protected: |
| 65 RenderScrollbar(ScrollableArea*, ScrollbarOrientation, Node*, LocalFrame*); |
| 66 |
62 private: | 67 private: |
| 68 friend class Scrollbar; |
| 69 |
63 virtual void setParent(Widget*) override; | 70 virtual void setParent(Widget*) override; |
64 virtual void setEnabled(bool) override; | 71 virtual void setEnabled(bool) override; |
65 | 72 |
66 virtual void setHoveredPart(ScrollbarPart) override; | 73 virtual void setHoveredPart(ScrollbarPart) override; |
67 virtual void setPressedPart(ScrollbarPart) override; | 74 virtual void setPressedPart(ScrollbarPart) override; |
68 | 75 |
69 virtual void styleChanged() override; | 76 virtual void styleChanged() override; |
70 | 77 |
71 virtual bool isCustomScrollbar() const override { return true; } | 78 virtual bool isCustomScrollbar() const override { return true; } |
72 | 79 |
73 void updateScrollbarParts(bool destroy = false); | 80 void updateScrollbarParts(bool destroy = false); |
74 | 81 |
75 PassRefPtr<RenderStyle> getScrollbarPseudoStyle(ScrollbarPart, PseudoId); | 82 PassRefPtr<RenderStyle> getScrollbarPseudoStyle(ScrollbarPart, PseudoId); |
76 void updateScrollbarPart(ScrollbarPart, bool destroy = false); | 83 void updateScrollbarPart(ScrollbarPart, bool destroy = false); |
77 | 84 |
| 85 void destroyParts(); |
| 86 |
78 // This Scrollbar(Widget) may outlive the DOM which created it (during tear
down), | 87 // This Scrollbar(Widget) may outlive the DOM which created it (during tear
down), |
79 // so we keep a reference to the Node which caused this custom scrollbar cre
ation. | 88 // so we keep a reference to the Node which caused this custom scrollbar cre
ation. |
80 // This will not create a reference cycle as the Widget tree is owned by our
containing | 89 // This will not create a reference cycle as the Widget tree is owned by our
containing |
81 // FrameView which this Node pointer can in no way keep alive. See webkit bu
g 80610. | 90 // FrameView which this Node pointer can in no way keep alive. See webkit bu
g 80610. |
82 RefPtrWillBePersistent<Node> m_owner; | 91 RefPtrWillBeMember<Node> m_owner; |
83 | 92 |
84 LocalFrame* m_owningFrame; | 93 RawPtrWillBeMember<LocalFrame> m_owningFrame; |
85 WillBePersistentHeapHashMap<unsigned, RawPtrWillBeMember<RenderScrollbarPart
> > m_parts; | 94 |
| 95 WillBeHeapHashMap<unsigned, RawPtrWillBeMember<RenderScrollbarPart> > m_part
s; |
86 }; | 96 }; |
87 | 97 |
88 DEFINE_TYPE_CASTS(RenderScrollbar, ScrollbarThemeClient, scrollbar, scrollbar->i
sCustomScrollbar(), scrollbar.isCustomScrollbar()); | 98 DEFINE_TYPE_CASTS(RenderScrollbar, ScrollbarThemeClient, scrollbar, scrollbar->i
sCustomScrollbar(), scrollbar.isCustomScrollbar()); |
89 | 99 |
90 } // namespace blink | 100 } // namespace blink |
91 | 101 |
92 #endif // RenderScrollbar_h | 102 #endif // RenderScrollbar_h |
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