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      1 // Copyright (c) 2012 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 #include "android_webview/common/aw_content_client.h"
      6 
      7 #include "base/basictypes.h"
      8 #include "base/command_line.h"
      9 #include "content/public/common/content_switches.h"
     10 #include "content/public/common/user_agent.h"
     11 #include "ipc/ipc_message.h"
     12 #include "ui/base/l10n/l10n_util.h"
     13 #include "ui/base/resource/resource_bundle.h"
     14 
     15 namespace {
     16 
     17 std::string GetProduct() {
     18   // "Chrome/XX.0.0.0" identifies that this WebView is derived from the
     19   // corresponding Chromium version XX.
     20   // TODO(torne): Use chrome/VERSION file. See http://crbug.com/297522
     21   return "Chrome/39.0.0.0";
     22 }
     23 
     24 }
     25 
     26 namespace android_webview {
     27 
     28 std::string GetUserAgent() {
     29   // "Version/4.0" had been hardcoded in the legacy WebView.
     30   std::string product = "Version/4.0 " + GetProduct();
     31   if (CommandLine::ForCurrentProcess()->HasSwitch(
     32         switches::kUseMobileUserAgent)) {
     33     product += " Mobile";
     34   }
     35   return content::BuildUserAgentFromProduct(product);
     36 }
     37 
     38 std::string AwContentClient::GetProduct() const {
     39   return ::GetProduct();
     40 }
     41 
     42 std::string AwContentClient::GetUserAgent() const {
     43   return android_webview::GetUserAgent();
     44 }
     45 
     46 base::string16 AwContentClient::GetLocalizedString(int message_id) const {
     47   // TODO(boliu): Used only by WebKit, so only bundle those resources for
     48   // Android WebView.
     49   return l10n_util::GetStringUTF16(message_id);
     50 }
     51 
     52 base::StringPiece AwContentClient::GetDataResource(
     53     int resource_id,
     54     ui::ScaleFactor scale_factor) const {
     55   // TODO(boliu): Used only by WebKit, so only bundle those resources for
     56   // Android WebView.
     57   return ResourceBundle::GetSharedInstance().GetRawDataResourceForScale(
     58       resource_id, scale_factor);
     59 }
     60 
     61 bool AwContentClient::CanSendWhileSwappedOut(const IPC::Message* message) {
     62   // For legacy API support we perform a few browser -> renderer synchronous IPC
     63   // messages that block the browser. However, the synchronous IPC replies might
     64   // be dropped by the renderer during a swap out, deadlocking the browser.
     65   // Because of this we should never drop any synchronous IPC replies.
     66   return message->type() == IPC_REPLY_ID;
     67 }
     68 
     69 }  // namespace android_webview
     70