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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(); } |
| 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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