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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 ModulePendingScript_h | |
6 #define ModulePendingScript_h | |
7 | |
8 #include "core/dom/Modulator.h" | |
9 #include "core/dom/ModuleScript.h" | |
10 #include "core/dom/PendingScript.h" | |
11 | |
12 namespace blink { | |
13 | |
14 class ModulePendingScript; | |
15 | |
16 // ModulePendingScriptTreeClient is used to connect from Modulator::FetchTree() | |
17 // to ModulePendingScript. Because ModulePendingScript is created after | |
18 // Modulator::FetchTree() is called, ModulePendingScriptTreeClient is | |
19 // registered as ModuleTreeClient to FetchTree() first, and later | |
20 // ModulePendingScript is supplied to ModulePendingScriptTreeClient via | |
21 // SetPendingScript() and is notified of module tree load finish. | |
22 class ModulePendingScriptTreeClient final | |
23 : public GarbageCollectedFinalized<ModulePendingScriptTreeClient>, | |
24 public ModuleTreeClient { | |
25 USING_GARBAGE_COLLECTED_MIXIN(ModulePendingScriptTreeClient); | |
26 | |
27 public: | |
28 static ModulePendingScriptTreeClient* Create() { | |
29 return new ModulePendingScriptTreeClient(); | |
30 } | |
31 virtual ~ModulePendingScriptTreeClient() = default; | |
32 | |
33 void SetPendingScript(ModulePendingScript* client); | |
34 | |
35 ModuleScript* GetModuleScript() const { return module_script_; } | |
36 | |
37 DECLARE_TRACE(); | |
38 | |
39 private: | |
40 ModulePendingScriptTreeClient(); | |
41 | |
42 // Implements ModuleTreeClient | |
43 void NotifyModuleTreeLoadFinished(ModuleScript*) override; | |
44 | |
45 bool finished_ = false; | |
46 Member<ModuleScript> module_script_; | |
47 Member<ModulePendingScript> pending_script_; | |
48 }; | |
49 | |
50 // PendingScript for a module script | |
51 // https://html.spec.whatwg.org/#module-script. | |
52 class CORE_EXPORT ModulePendingScript : public PendingScript { | |
53 public: | |
54 static ModulePendingScript* Create(ScriptElementBase* element, | |
55 ModulePendingScriptTreeClient* client) { | |
56 return new ModulePendingScript(element, client); | |
57 } | |
58 | |
59 ~ModulePendingScript() override; | |
60 | |
61 void NotifyModuleTreeLoadFinished(); | |
62 | |
63 ModuleScript* GetModuleScript() const { | |
64 return module_tree_client_->GetModuleScript(); | |
65 } | |
66 | |
67 DECLARE_TRACE(); | |
68 | |
69 private: | |
70 ModulePendingScript(ScriptElementBase*, ModulePendingScriptTreeClient*); | |
71 | |
72 // PendingScript | |
73 ScriptType GetScriptType() const override { return ScriptType::kModule; } | |
74 Script* GetSource(const KURL& document_url, | |
75 bool& error_occurred) const override; | |
76 bool IsReady() const override { return ready_; } | |
77 bool IsExternal() const override { return true; } | |
78 bool ErrorOccurred() const override; | |
79 bool WasCanceled() const override { return false; } | |
80 | |
81 void StartStreamingIfPossible(Document*, ScriptStreamer::Type) override {} | |
82 KURL UrlForClassicScript() const override { | |
83 NOTREACHED(); | |
84 return KURL(); | |
85 } | |
86 void RemoveFromMemoryCache() override { NOTREACHED(); } | |
kouhei (in TOK)
2017/04/14 00:20:45
Comment explaining "why" would help
| |
87 | |
88 void DisposeInternal() override; | |
89 | |
90 void CheckState() const override {} | |
91 | |
92 Member<ModulePendingScriptTreeClient> module_tree_client_; | |
93 bool ready_ = false; | |
94 }; | |
95 | |
96 } // namespace blink | |
97 | |
98 #endif // ModulePendingScript_h | |
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