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// Copyright 2013 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 CHROME_RENDERER_EXTENSIONS_EXTENSION_LOCALIZATION_PEER_H_
#define CHROME_RENDERER_EXTENSIONS_EXTENSION_LOCALIZATION_PEER_H_
#include <string>
#include "ipc/ipc_sender.h"
#include "webkit/child/resource_loader_bridge.h"
#include "webkit/common/resource_response_info.h"
// The ExtensionLocalizationPeer is a proxy to a
// webkit_glue::ResourceLoaderBridge::Peer instance. It is used to pre-process
// CSS files requested by extensions to replace localization templates with the
// appropriate localized strings.
//
// Call the factory method CreateExtensionLocalizationPeer() to obtain an
// instance of ExtensionLocalizationPeer based on the original Peer.
class ExtensionLocalizationPeer
: public webkit_glue::ResourceLoaderBridge::Peer {
public:
virtual ~ExtensionLocalizationPeer();
static ExtensionLocalizationPeer* CreateExtensionLocalizationPeer(
webkit_glue::ResourceLoaderBridge::Peer* peer,
IPC::Sender* message_sender,
const std::string& mime_type,
const GURL& request_url);
// ResourceLoaderBridge::Peer methods.
virtual void OnUploadProgress(uint64 position, uint64 size) OVERRIDE;
virtual bool OnReceivedRedirect(
const GURL& new_url,
const webkit_glue::ResourceResponseInfo& info,
bool* has_new_first_party_for_cookies,
GURL* new_first_party_for_cookies) OVERRIDE;
virtual void OnReceivedResponse(
const webkit_glue::ResourceResponseInfo& info) OVERRIDE;
virtual void OnDownloadedData(int len, int encoded_data_length) OVERRIDE {}
virtual void OnReceivedData(const char* data,
int data_length,
int encoded_data_length) OVERRIDE;
virtual void OnCompletedRequest(
int error_code,
bool was_ignored_by_handler,
bool stale_copy_in_cache,
const std::string& security_info,
const base::TimeTicks& completion_time,
int64 total_transfer_size) OVERRIDE;
private:
friend class ExtensionLocalizationPeerTest;
// Use CreateExtensionLocalizationPeer to create an instance.
ExtensionLocalizationPeer(
webkit_glue::ResourceLoaderBridge::Peer* peer,
IPC::Sender* message_sender,
const GURL& request_url);
// Loads message catalogs, and replaces all __MSG_some_name__ templates within
// loaded file.
void ReplaceMessages();
// Original peer that handles the request once we are done processing data_.
webkit_glue::ResourceLoaderBridge::Peer* original_peer_;
// We just pass though the response info. This holds the copy of the original.
webkit_glue::ResourceResponseInfo response_info_;
// Sends ExtensionHostMsg_GetMessageBundle message to the browser to fetch
// message catalog.
IPC::Sender* message_sender_;
// Buffer for incoming data. We wait until OnCompletedRequest before using it.
std::string data_;
// Original request URL.
GURL request_url_;
private:
DISALLOW_COPY_AND_ASSIGN(ExtensionLocalizationPeer);
};
#endif // CHROME_RENDERER_EXTENSIONS_EXTENSION_LOCALIZATION_PEER_H_
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