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| 1 /* | |
| 2 * Copyright (C) 2011 Adobe Systems Incorporated. All rights reserved. | |
| 3 * | |
| 4 * Redistribution and use in source and binary forms, with or without | |
| 5 * modification, are permitted provided that the following conditions | |
| 6 * are met: | |
| 7 * | |
| 8 * 1. Redistributions of source code must retain the above | |
| 9 * copyright notice, this list of conditions and the following | |
| 10 * disclaimer. | |
| 11 * 2. Redistributions in binary form must reproduce the above | |
| 12 * copyright notice, this list of conditions and the following | |
| 13 * disclaimer in the documentation and/or other materials | |
| 14 * provided with the distribution. | |
| 15 * | |
| 16 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDER "AS IS" AND ANY | |
| 17 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
| 18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR | |
| 19 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER BE | |
| 20 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, | |
| 21 * OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, | |
| 22 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR | |
| 23 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY | |
| 24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR | |
| 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 | |
| 27 * SUCH DAMAGE. | |
| 28 */ | |
| 29 | |
| 30 #ifndef NamedFlow_h | |
| 31 #define NamedFlow_h | |
| 32 | |
| 33 #include "bindings/v8/ScriptWrappable.h" | |
| 34 #include "core/events/EventTarget.h" | |
| 35 #include "wtf/RefCounted.h" | |
| 36 #include "wtf/RefPtr.h" | |
| 37 #include "wtf/text/AtomicString.h" | |
| 38 | |
| 39 namespace WebCore { | |
| 40 | |
| 41 class Document; | |
| 42 class NamedFlowCollection; | |
| 43 class Node; | |
| 44 class NodeList; | |
| 45 class RenderNamedFlowThread; | |
| 46 class ExecutionContext; | |
| 47 | |
| 48 class NamedFlow FINAL : public RefCounted<NamedFlow>, public ScriptWrappable, pu
blic EventTargetWithInlineData { | |
| 49 REFCOUNTED_EVENT_TARGET(NamedFlow); | |
| 50 public: | |
| 51 static PassRefPtr<NamedFlow> create(PassRefPtr<NamedFlowCollection> manager,
const AtomicString& flowThreadName); | |
| 52 | |
| 53 virtual ~NamedFlow(); | |
| 54 | |
| 55 const AtomicString& name() const; | |
| 56 bool overset() const; | |
| 57 int firstEmptyRegionIndex() const; | |
| 58 PassRefPtr<NodeList> getRegionsByContent(Node*); | |
| 59 PassRefPtr<NodeList> getRegions(); | |
| 60 PassRefPtr<NodeList> getContent(); | |
| 61 | |
| 62 virtual const AtomicString& interfaceName() const OVERRIDE; | |
| 63 virtual ExecutionContext* executionContext() const OVERRIDE; | |
| 64 | |
| 65 // This function is called from the JS binding code to determine if the Name
dFlow object is reachable or not. | |
| 66 // If the object has listeners, the object should only be discarded if the p
arent Document is not reachable. | |
| 67 Node* ownerNode() const; | |
| 68 | |
| 69 void setRenderer(RenderNamedFlowThread* parentFlowThread); | |
| 70 | |
| 71 enum FlowState { | |
| 72 FlowStateCreated, | |
| 73 FlowStateNull | |
| 74 }; | |
| 75 | |
| 76 FlowState flowState() const { return m_parentFlowThread ? FlowStateCreated :
FlowStateNull; } | |
| 77 | |
| 78 void dispatchRegionLayoutUpdateEvent(); | |
| 79 void dispatchRegionOversetChangeEvent(); | |
| 80 | |
| 81 private: | |
| 82 NamedFlow(PassRefPtr<NamedFlowCollection>, const AtomicString&); | |
| 83 | |
| 84 // The name of the flow thread as specified in CSS. | |
| 85 AtomicString m_flowThreadName; | |
| 86 | |
| 87 RefPtr<NamedFlowCollection> m_flowManager; | |
| 88 RenderNamedFlowThread* m_parentFlowThread; | |
| 89 }; | |
| 90 | |
| 91 } | |
| 92 | |
| 93 #endif | |
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Chromium Code Reviews
Issue 143323014:
*** DO NOT LAND *** Attempt to understand Regions complexity
Base URL: svn://svn.chromium.org/blink/trunk