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// Copyright 2017 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef THIRD_PARTY_BLINK_RENDERER_CORE_SCRIPT_MODULE_PENDING_SCRIPT_H_
#define THIRD_PARTY_BLINK_RENDERER_CORE_SCRIPT_MODULE_PENDING_SCRIPT_H_
#include "third_party/blink/renderer/core/script/modulator.h"
#include "third_party/blink/renderer/core/script/module_script.h"
#include "third_party/blink/renderer/core/script/pending_script.h"
#include "third_party/blink/renderer/platform/bindings/script_wrappable.h"
#include "third_party/blink/renderer/platform/bindings/trace_wrapper_member.h"
namespace blink {
class ModulePendingScript;
// ModulePendingScriptTreeClient is used to connect from Modulator::FetchTree()
// to ModulePendingScript. Because ModulePendingScript is created after
// Modulator::FetchTree() is called, ModulePendingScriptTreeClient is
// registered as ModuleTreeClient to FetchTree() first, and later
// ModulePendingScript is supplied to ModulePendingScriptTreeClient via
// SetPendingScript() and is notified of module tree load finish.
class ModulePendingScriptTreeClient final : public ModuleTreeClient {
public:
static ModulePendingScriptTreeClient* Create() {
return new ModulePendingScriptTreeClient();
}
~ModulePendingScriptTreeClient() override = default;
void SetPendingScript(ModulePendingScript* client);
ModuleScript* GetModuleScript() const { return module_script_; }
void Trace(blink::Visitor*) override;
void TraceWrappers(ScriptWrappableVisitor*) const override;
private:
ModulePendingScriptTreeClient();
// Implements ModuleTreeClient
void NotifyModuleTreeLoadFinished(ModuleScript*) override;
bool finished_ = false;
TraceWrapperMember<ModuleScript> module_script_;
TraceWrapperMember<ModulePendingScript> pending_script_;
};
// PendingScript for a module script
// https://html.spec.whatwg.org/multipage/webappapis.html#module-script.
class CORE_EXPORT ModulePendingScript : public PendingScript {
public:
static ModulePendingScript* Create(ScriptElementBase* element,
ModulePendingScriptTreeClient* client,
bool is_external) {
return new ModulePendingScript(element, client, is_external);
}
~ModulePendingScript() override;
void NotifyModuleTreeLoadFinished();
ModuleScript* GetModuleScript() const {
return module_tree_client_->GetModuleScript();
}
void Trace(blink::Visitor*) override;
void TraceWrappers(ScriptWrappableVisitor*) const override;
private:
ModulePendingScript(ScriptElementBase*,
ModulePendingScriptTreeClient*,
bool is_external);
// PendingScript
ScriptType GetScriptType() const override { return ScriptType::kModule; }
Script* GetSource(const KURL& document_url,
bool& error_occurred) const override;
bool IsReady() const override { return ready_; }
bool IsExternal() const override { return is_external_; }
bool ErrorOccurred() const override;
bool WasCanceled() const override { return false; }
bool StartStreamingIfPossible(ScriptStreamer::Type,
base::OnceClosure) override {
return false;
}
bool IsCurrentlyStreaming() const override { return false; }
KURL UrlForTracing() const override { return NullURL(); }
void DisposeInternal() override;
void CheckState() const override {}
TraceWrapperMember<ModulePendingScriptTreeClient> module_tree_client_;
bool ready_ = false;
const bool is_external_;
};
} // namespace blink
#endif // THIRD_PARTY_BLINK_RENDERER_CORE_SCRIPT_MODULE_PENDING_SCRIPT_H_
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