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1 /* | 1 /* |
2 * Copyright (C) 2012 Adobe Systems Incorporated. All rights reserved. | 2 * Copyright (C) 2012 Adobe Systems Incorporated. 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 * | 7 * |
8 * 1. Redistributions of source code must retain the above | 8 * 1. Redistributions of source code must retain the above |
9 * copyright notice, this list of conditions and the following | 9 * copyright notice, this list of conditions and the following |
10 * disclaimer. | 10 * disclaimer. |
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23 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY | 23 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR | 24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR |
25 * TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF | 25 * TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF |
26 * THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF | 26 * THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
27 * SUCH DAMAGE. | 27 * SUCH DAMAGE. |
28 */ | 28 */ |
29 | 29 |
30 #ifndef FlowThreadController_h | 30 #ifndef FlowThreadController_h |
31 #define FlowThreadController_h | 31 #define FlowThreadController_h |
32 | 32 |
33 #include "core/rendering/RenderView.h" | 33 #include "wtf/FastAllocBase.h" |
34 #include "wtf/ListHashSet.h" | 34 #include "wtf/PassOwnPtr.h" |
35 #include "wtf/OwnPtr.h" | |
36 | 35 |
37 namespace WebCore { | 36 namespace WebCore { |
38 | 37 |
39 class RenderFlowThread; | 38 class RenderFlowThread; |
40 class RenderNamedFlowThread; | |
41 | |
42 typedef ListHashSet<RenderNamedFlowThread*> RenderNamedFlowThreadList; | |
43 | 39 |
44 class FlowThreadController { | 40 class FlowThreadController { |
45 WTF_MAKE_FAST_ALLOCATED; | 41 WTF_MAKE_FAST_ALLOCATED; |
46 public: | 42 public: |
47 static PassOwnPtr<FlowThreadController> create(RenderView*); | 43 static PassOwnPtr<FlowThreadController> create(); |
48 ~FlowThreadController(); | |
49 | 44 |
50 RenderFlowThread* currentRenderFlowThread() const { return m_currentRenderFl
owThread; } | 45 RenderFlowThread* currentRenderFlowThread() const { return m_currentRenderFl
owThread; } |
51 void setCurrentRenderFlowThread(RenderFlowThread* flowThread) { m_currentRen
derFlowThread = flowThread; } | 46 void setCurrentRenderFlowThread(RenderFlowThread* flowThread) { m_currentRen
derFlowThread = flowThread; } |
52 | 47 |
53 bool isRenderNamedFlowThreadOrderDirty() const { return m_isRenderNamedFlowT
hreadOrderDirty; } | |
54 void setIsRenderNamedFlowThreadOrderDirty(bool dirty) | |
55 { | |
56 m_isRenderNamedFlowThreadOrderDirty = dirty; | |
57 if (dirty) | |
58 m_view->setNeedsLayout(); | |
59 } | |
60 | |
61 RenderNamedFlowThread* ensureRenderFlowThreadWithName(const AtomicString&); | |
62 const RenderNamedFlowThreadList* renderNamedFlowThreadList() const { return
m_renderNamedFlowThreadList.get(); } | |
63 bool hasRenderNamedFlowThreads() const { return m_renderNamedFlowThreadList
&& !m_renderNamedFlowThreadList->isEmpty(); } | |
64 void layoutRenderNamedFlowThreads(); | |
65 void styleDidChange(); | |
66 | |
67 void registerNamedFlowContentNode(Node*, RenderNamedFlowThread*); | |
68 void unregisterNamedFlowContentNode(Node*); | |
69 bool isContentNodeRegisteredWithAnyNamedFlow(const Node*) const; | |
70 | |
71 bool hasFlowThreadsWithAutoLogicalHeightRegions() const { return m_flowThrea
dsWithAutoLogicalHeightRegions; } | |
72 void incrementFlowThreadsWithAutoLogicalHeightRegions() { ++m_flowThreadsWit
hAutoLogicalHeightRegions; } | |
73 void decrementFlowThreadsWithAutoLogicalHeightRegions() { ASSERT(m_flowThrea
dsWithAutoLogicalHeightRegions > 0); --m_flowThreadsWithAutoLogicalHeightRegions
; } | |
74 | |
75 bool updateFlowThreadsNeedingLayout(); | |
76 bool updateFlowThreadsNeedingTwoStepLayout(); | |
77 void updateFlowThreadsIntoConstrainedPhase(); | |
78 | |
79 #ifndef NDEBUG | |
80 bool isAutoLogicalHeightRegionsCountConsistent() const; | |
81 #endif | |
82 | |
83 protected: | 48 protected: |
84 FlowThreadController(RenderView*); | 49 FlowThreadController(); |
85 void updateFlowThreadsChainIfNecessary(); | |
86 void resetFlowThreadsWithAutoHeightRegions(); | |
87 | 50 |
88 private: | 51 private: |
89 RenderView* m_view; | |
90 RenderFlowThread* m_currentRenderFlowThread; | 52 RenderFlowThread* m_currentRenderFlowThread; |
91 bool m_isRenderNamedFlowThreadOrderDirty; | |
92 unsigned m_flowThreadsWithAutoLogicalHeightRegions; | |
93 OwnPtr<RenderNamedFlowThreadList> m_renderNamedFlowThreadList; | |
94 // maps a content node to its render flow thread. | |
95 HashMap<const Node*, RenderNamedFlowThread*> m_mapNamedFlowContentNodes; | |
96 }; | 53 }; |
97 | 54 |
98 } | 55 } |
99 | 56 |
100 #endif | 57 #endif |
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