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// Copyright 2023 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef EXTENSIONS_RENDERER_EXTENSION_LOCALIZATION_THROTTLE_H_
#define EXTENSIONS_RENDERER_EXTENSION_LOCALIZATION_THROTTLE_H_
#include "base/memory/weak_ptr.h"
#include "mojo/public/cpp/system/data_pipe.h"
#include "services/network/public/mojom/url_response_head.mojom.h"
#include "third_party/blink/public/common/loader/url_loader_throttle.h"
namespace blink {
class WebURL;
} // namespace blink
namespace extensions {
// ExtensionLocalizationThrottle is used to pre-process CSS files
// requested by extensions to replace localization templates with the
// appropriate localized strings.
class ExtensionLocalizationThrottle : public blink::URLLoaderThrottle {
public:
// Creates a ExtensionLocalizationThrottle only when `request_url`
// is a chrome-extention scheme URL.
static std::unique_ptr<ExtensionLocalizationThrottle> MaybeCreate(
int render_frame_id,
const blink::WebURL& request_url);
~ExtensionLocalizationThrottle() override;
// Implements blink::URLLoaderThrottle.
void DetachFromCurrentSequence() override;
void WillProcessResponse(const GURL& response_url,
network::mojom::URLResponseHead* response_head,
bool* defer) override;
// Force CreateDataPipe to result in an error.
void ForceCreateDataPipeErrorForTest() { force_error_for_test_ = true; }
private:
explicit ExtensionLocalizationThrottle(int render_frame_id);
void DeferredCancelWithError(int error_code);
bool force_error_for_test_ = false;
const int render_frame_id_;
base::WeakPtrFactory<ExtensionLocalizationThrottle> weak_factory_{this};
};
} // namespace extensions
#endif // EXTENSIONS_RENDERER_EXTENSION_LOCALIZATION_THROTTLE_H_
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