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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 ClassicPendingScript_h | |
6 #define ClassicPendingScript_h | |
7 | |
8 #include "bindings/core/v8/ScriptStreamer.h" | |
9 #include "core/dom/ClassicScript.h" | |
10 #include "core/dom/PendingScript.h" | |
11 #include "core/loader/resource/ScriptResource.h" | |
12 #include "platform/MemoryCoordinator.h" | |
13 #include "platform/loader/fetch/ResourceOwner.h" | |
14 | |
15 namespace blink { | |
16 | |
17 // PendingScript for a classic script | |
18 // https://html.spec.whatwg.org/#classic-script. | |
19 // | |
20 // TODO(kochi): The comment below is from pre-oilpan age and may not be correct | |
21 // now. | |
22 // A RefPtr alone does not prevent the underlying Resource from purging its data | |
23 // buffer. This class holds a dummy client open for its lifetime in order to | |
24 // guarantee that the data buffer will not be purged. | |
25 class CORE_EXPORT ClassicPendingScript final | |
26 : public PendingScript, | |
27 public ResourceOwner<ScriptResource>, | |
28 public MemoryCoordinatorClient { | |
29 USING_GARBAGE_COLLECTED_MIXIN(ClassicPendingScript); | |
30 USING_PRE_FINALIZER(ClassicPendingScript, Dispose); | |
hiroshige
2017/04/19 01:01:40
I also register Dispose() as ClassicPendingScript.
| |
31 | |
32 public: | |
33 // For script from an external file. | |
34 static ClassicPendingScript* Create(ScriptElementBase*, ScriptResource*); | |
35 // For inline script. | |
36 static ClassicPendingScript* Create(ScriptElementBase*, const TextPosition&); | |
37 | |
38 static ClassicPendingScript* CreateForTesting(ScriptResource*); | |
39 | |
40 ~ClassicPendingScript() override; | |
41 | |
42 void SetStreamer(ScriptStreamer*); | |
43 void StreamingFinished(); | |
44 | |
45 DECLARE_TRACE(); | |
46 | |
47 blink::ScriptType GetScriptType() const override { | |
48 return blink::ScriptType::kClassic; | |
49 } | |
50 | |
51 ClassicScript* GetSource(const KURL& document_url, | |
52 bool& error_occurred) const override; | |
53 bool IsReady() const override; | |
54 KURL Url() const override; | |
55 bool IsExternal() const override { return GetResource(); } | |
56 bool ErrorOccurred() const override; | |
57 bool WasCanceled() const override; | |
58 void StartStreamingIfPossible(Document*, ScriptStreamer::Type) override; | |
59 void RemoveFromMemoryCache() override; | |
60 void DisposeInternal() override; | |
61 | |
62 private: | |
63 ClassicPendingScript(ScriptElementBase*, | |
64 ScriptResource*, | |
65 const TextPosition&, | |
66 bool is_for_testing = false); | |
67 ClassicPendingScript() = delete; | |
68 | |
69 void CheckState() const override; | |
70 | |
71 // ScriptResourceClient | |
72 void NotifyFinished(Resource*) override; | |
73 String DebugName() const override { return "PendingScript"; } | |
74 void NotifyAppendData(ScriptResource*) override; | |
75 | |
76 // MemoryCoordinatorClient | |
77 void OnPurgeMemory() override; | |
78 | |
79 bool integrity_failure_; | |
80 | |
81 Member<ScriptStreamer> streamer_; | |
82 | |
83 // This flag is used to skip non-null checks of |m_element| in unit | |
84 // tests, because |m_element| can be null in unit tests. | |
85 const bool is_for_testing_; | |
86 }; | |
87 | |
88 } // namespace blink | |
89 | |
90 #endif // PendingScript_h | |
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