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1 // Copyright 2017 The Chromium Authors. All rights reserved. | |
2 // Use of this source code is governed by a BSD-style license that can be | |
3 // found in the LICENSE file. | |
4 | |
5 #ifndef SVGTreeScopeResources_h | |
6 #define SVGTreeScopeResources_h | |
7 | |
8 #include "platform/heap/Handle.h" | |
9 #include "wtf/Forward.h" | |
10 #include "wtf/HashMap.h" | |
11 #include "wtf/HashSet.h" | |
12 #include "wtf/text/AtomicStringHash.h" | |
13 | |
14 namespace blink { | |
15 | |
16 class Element; | |
17 class TreeScope; | |
18 class LayoutSVGResourceContainer; | |
19 | |
20 class SVGTreeScopeResources | |
pdr.
2017/01/23 04:34:12
Can you add a very short comment here describing t
fs
2017/01/23 11:18:24
Done.
| |
21 : public GarbageCollectedFinalized<SVGTreeScopeResources> { | |
22 WTF_MAKE_NONCOPYABLE(SVGTreeScopeResources); | |
23 | |
24 public: | |
25 typedef HeapHashSet<Member<Element>> SVGPendingElements; | |
26 | |
27 explicit SVGTreeScopeResources(TreeScope*); | |
28 ~SVGTreeScopeResources(); | |
29 | |
30 void addResource(const AtomicString& id, LayoutSVGResourceContainer*); | |
31 void removeResource(const AtomicString& id); | |
32 LayoutSVGResourceContainer* resourceById(const AtomicString& id) const; | |
33 | |
34 // Pending resources are such which are referenced by any object in the SVG | |
35 // document, but do NOT exist yet. For instance, dynamically built gradients | |
36 // / patterns / clippers... | |
37 void addPendingResource(const AtomicString& id, Element*); | |
38 bool hasPendingResource(const AtomicString& id) const; | |
39 bool isElementPendingResources(Element*) const; | |
40 bool isElementPendingResource(Element*, const AtomicString& id) const; | |
41 void clearHasPendingResourcesIfPossible(Element*); | |
42 void removeElementFromPendingResources(Element*); | |
43 SVGPendingElements* removePendingResource(const AtomicString& id); | |
44 | |
45 DECLARE_TRACE(); | |
46 | |
47 private: | |
48 HashMap<AtomicString, LayoutSVGResourceContainer*> m_resources; | |
49 // Resources that are pending. | |
50 HeapHashMap<AtomicString, Member<SVGPendingElements>> m_pendingResources; | |
51 }; | |
52 | |
53 } // namespace blink | |
54 | |
55 #endif // SVGTreeScopeResources_h | |
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