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// Copyright (c) 2010 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.
#include "chrome/common/extensions/extension_localization_peer.h"
#include "base/string_util.h"
#include "chrome/common/extensions/extension_message_bundle.h"
#include "chrome/common/render_messages.h"
#include "chrome/common/url_constants.h"
#include "grit/generated_resources.h"
#include "grit/renderer_resources.h"
#include "net/base/net_errors.h"
#include "net/http/http_response_headers.h"
#include "webkit/glue/webkit_glue.h"
ExtensionLocalizationPeer::ExtensionLocalizationPeer(
webkit_glue::ResourceLoaderBridge::Peer* peer,
IPC::Message::Sender* message_sender,
const GURL& request_url)
: original_peer_(peer),
message_sender_(message_sender),
request_url_(request_url) {
}
ExtensionLocalizationPeer::~ExtensionLocalizationPeer() {
}
// static
ExtensionLocalizationPeer*
ExtensionLocalizationPeer::CreateExtensionLocalizationPeer(
webkit_glue::ResourceLoaderBridge::Peer* peer,
IPC::Message::Sender* message_sender,
const std::string& mime_type,
const GURL& request_url) {
// Return NULL if content is not text/css or it doesn't belong to extension
// scheme.
return (request_url.SchemeIs(chrome::kExtensionScheme) &&
StartsWithASCII(mime_type, "text/css", false)) ?
new ExtensionLocalizationPeer(peer, message_sender, request_url) : NULL;
}
void ExtensionLocalizationPeer::OnUploadProgress(
uint64 position, uint64 size) {
NOTREACHED();
}
bool ExtensionLocalizationPeer::OnReceivedRedirect(
const GURL& new_url,
const webkit_glue::ResourceLoaderBridge::ResponseInfo& info,
bool* has_new_first_party_for_cookies,
GURL* new_first_party_for_cookies) {
NOTREACHED();
return false;
}
void ExtensionLocalizationPeer::OnReceivedResponse(
const webkit_glue::ResourceLoaderBridge::ResponseInfo& info,
bool content_filtered) {
response_info_ = info;
}
void ExtensionLocalizationPeer::OnReceivedData(const char* data, int len) {
data_.append(data, len);
}
void ExtensionLocalizationPeer::OnCompletedRequest(
const URLRequestStatus& status, const std::string& security_info) {
// Make sure we delete ourselves at the end of this call.
scoped_ptr<ExtensionLocalizationPeer> this_deleter(this);
// Give sub-classes a chance at altering the data.
if (status.status() != URLRequestStatus::SUCCESS) {
// We failed to load the resource.
original_peer_->OnReceivedResponse(response_info_, true);
URLRequestStatus status(URLRequestStatus::CANCELED, net::ERR_ABORTED);
original_peer_->OnCompletedRequest(status, security_info);
return;
}
ReplaceMessages();
original_peer_->OnReceivedResponse(response_info_, true);
if (!data_.empty())
original_peer_->OnReceivedData(data_.data(),
static_cast<int>(data_.size()));
original_peer_->OnCompletedRequest(status, security_info);
}
GURL ExtensionLocalizationPeer::GetURLForDebugging() const {
return original_peer_->GetURLForDebugging();
}
void ExtensionLocalizationPeer::ReplaceMessages() {
if (!message_sender_ || data_.empty())
return;
if (!request_url_.is_valid())
return;
std::string extension_id = request_url_.host();
L10nMessagesMap* l10n_messages = GetL10nMessagesMap(extension_id);
if (!l10n_messages) {
L10nMessagesMap messages;
message_sender_->Send(new ViewHostMsg_GetExtensionMessageBundle(
extension_id, &messages));
// Save messages we got, so we don't have to ask again.
// Messages map is never empty, it contains at least @@extension_id value.
ExtensionToL10nMessagesMap& l10n_messages_map =
*GetExtensionToL10nMessagesMap();
l10n_messages_map[extension_id] = messages;
l10n_messages = GetL10nMessagesMap(extension_id);
}
std::string error;
if (ExtensionMessageBundle::ReplaceMessagesWithExternalDictionary(
*l10n_messages, &data_, &error)) {
data_.resize(data_.size());
}
}
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