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      1 // Copyright 2013 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 "chrome/browser/ui/webui/media/webrtc_logs_ui.h"
      6 
      7 #include <vector>
      8 
      9 #include "base/bind.h"
     10 #include "base/bind_helpers.h"
     11 #include "base/i18n/time_formatting.h"
     12 #include "base/memory/ref_counted_memory.h"
     13 #include "base/prefs/pref_service.h"
     14 #include "base/strings/utf_string_conversions.h"
     15 #include "base/values.h"
     16 #include "chrome/browser/browser_process.h"
     17 #include "chrome/browser/media/webrtc_log_upload_list.h"
     18 #include "chrome/browser/profiles/profile.h"
     19 #include "chrome/common/chrome_version_info.h"
     20 #include "chrome/common/pref_names.h"
     21 #include "chrome/common/url_constants.h"
     22 #include "content/public/browser/web_contents.h"
     23 #include "content/public/browser/web_ui.h"
     24 #include "content/public/browser/web_ui_data_source.h"
     25 #include "content/public/browser/web_ui_message_handler.h"
     26 #include "grit/browser_resources.h"
     27 #include "grit/chromium_strings.h"
     28 #include "grit/generated_resources.h"
     29 #include "grit/theme_resources.h"
     30 #include "ui/base/l10n/l10n_util.h"
     31 #include "ui/base/resource/resource_bundle.h"
     32 
     33 #if defined(OS_CHROMEOS)
     34 #include "chrome/browser/chromeos/settings/cros_settings.h"
     35 #endif
     36 
     37 using content::WebContents;
     38 using content::WebUIMessageHandler;
     39 
     40 namespace {
     41 
     42 content::WebUIDataSource* CreateWebRtcLogsUIHTMLSource() {
     43   content::WebUIDataSource* source =
     44       content::WebUIDataSource::Create(chrome::kChromeUIWebRtcLogsHost);
     45   source->SetUseJsonJSFormatV2();
     46 
     47   source->AddLocalizedString("webrtcLogsTitle", IDS_WEBRTC_LOGS_TITLE);
     48   source->AddLocalizedString("webrtcLogCountFormat",
     49                              IDS_WEBRTC_LOGS_LOG_COUNT_BANNER_FORMAT);
     50   source->AddLocalizedString("webrtcLogHeaderFormat",
     51                              IDS_WEBRTC_LOGS_LOG_HEADER_FORMAT);
     52   source->AddLocalizedString("webrtcLogTimeFormat",
     53                              IDS_WEBRTC_LOGS_LOG_TIME_FORMAT);
     54   source->AddLocalizedString("bugLinkText", IDS_WEBRTC_LOGS_BUG_LINK_LABEL);
     55   source->AddLocalizedString("noLogsMessage",
     56                              IDS_WEBRTC_LOGS_NO_LOGS_MESSAGE);
     57   source->AddLocalizedString("disabledHeader", IDS_WEBRTC_LOGS_DISABLED_HEADER);
     58   source->AddLocalizedString("disabledMessage",
     59                              IDS_WEBRTC_LOGS_DISABLED_MESSAGE);
     60   source->SetJsonPath("strings.js");
     61   source->AddResourcePath("webrtc_logs.js", IDR_WEBRTC_LOGS_JS);
     62   source->SetDefaultResource(IDR_WEBRTC_LOGS_HTML);
     63   return source;
     64 }
     65 
     66 ////////////////////////////////////////////////////////////////////////////////
     67 //
     68 // WebRtcLogsDOMHandler
     69 //
     70 ////////////////////////////////////////////////////////////////////////////////
     71 
     72 // The handler for Javascript messages for the chrome://webrtc-logs/ page.
     73 class WebRtcLogsDOMHandler : public WebUIMessageHandler,
     74                              public WebRtcLogUploadList::Delegate {
     75  public:
     76   explicit WebRtcLogsDOMHandler();
     77   virtual ~WebRtcLogsDOMHandler();
     78 
     79   // WebUIMessageHandler implementation.
     80   virtual void RegisterMessages() OVERRIDE;
     81 
     82   // WebRtcLogUploadList::Delegate implemenation.
     83   virtual void OnUploadListAvailable() OVERRIDE;
     84 
     85  private:
     86   // Asynchronously fetches the list of upload WebRTC logs. Called from JS.
     87   void HandleRequestWebRtcLogs(const ListValue* args);
     88 
     89   // Sends the recently uploaded logs list JS.
     90   void UpdateUI();
     91 
     92   // Loads, parses and stores the list of uploaded WebRTC logs.
     93   scoped_refptr<WebRtcLogUploadList> upload_list_;
     94 
     95   // Set when |upload_list_| has finished populating the list of logs.
     96   bool list_available_;
     97 
     98   // Set when the webpage wants to update the list (on the webpage) but
     99   // |upload_list_| hasn't finished populating the list of logs yet.
    100   bool js_request_pending_;
    101 
    102   DISALLOW_COPY_AND_ASSIGN(WebRtcLogsDOMHandler);
    103 };
    104 
    105 WebRtcLogsDOMHandler::WebRtcLogsDOMHandler()
    106     : list_available_(false), js_request_pending_(false) {
    107   upload_list_ = WebRtcLogUploadList::Create(this);
    108 }
    109 
    110 WebRtcLogsDOMHandler::~WebRtcLogsDOMHandler() {
    111   upload_list_->ClearDelegate();
    112 }
    113 
    114 void WebRtcLogsDOMHandler::RegisterMessages() {
    115   upload_list_->LoadUploadListAsynchronously();
    116 
    117   web_ui()->RegisterMessageCallback("requestWebRtcLogsList",
    118       base::Bind(&WebRtcLogsDOMHandler::HandleRequestWebRtcLogs,
    119                  base::Unretained(this)));
    120 }
    121 
    122 void WebRtcLogsDOMHandler::HandleRequestWebRtcLogs(const ListValue* args) {
    123   if (!WebRtcLogsUI::WebRtcLogsUIEnabled() || list_available_)
    124     UpdateUI();
    125   else
    126     js_request_pending_ = true;
    127 }
    128 
    129 void WebRtcLogsDOMHandler::OnUploadListAvailable() {
    130   list_available_ = true;
    131   if (js_request_pending_)
    132     UpdateUI();
    133 }
    134 
    135 void WebRtcLogsDOMHandler::UpdateUI() {
    136   bool webrtc_logs_enabled = WebRtcLogsUI::WebRtcLogsUIEnabled();
    137   ListValue upload_list;
    138 
    139   if (webrtc_logs_enabled) {
    140     std::vector<WebRtcLogUploadList::UploadInfo> uploads;
    141     upload_list_->GetUploads(50, &uploads);
    142 
    143     for (std::vector<WebRtcLogUploadList::UploadInfo>::iterator i =
    144          uploads.begin(); i != uploads.end(); ++i) {
    145       DictionaryValue* upload = new DictionaryValue();
    146       upload->SetString("id", i->id);
    147       upload->SetString("time", base::TimeFormatFriendlyDateAndTime(i->time));
    148       upload_list.Append(upload);
    149     }
    150   }
    151 
    152   base::FundamentalValue enabled(webrtc_logs_enabled);
    153 
    154   const chrome::VersionInfo version_info;
    155   base::StringValue version(version_info.Version());
    156 
    157   web_ui()->CallJavascriptFunction("updateWebRtcLogsList", enabled, upload_list,
    158                                    version);
    159 }
    160 
    161 }  // namespace
    162 
    163 ///////////////////////////////////////////////////////////////////////////////
    164 //
    165 // WebRtcLogsUI
    166 //
    167 ///////////////////////////////////////////////////////////////////////////////
    168 
    169 WebRtcLogsUI::WebRtcLogsUI(content::WebUI* web_ui) : WebUIController(web_ui) {
    170   web_ui->AddMessageHandler(new WebRtcLogsDOMHandler());
    171 
    172   // Set up the chrome://webrtc-logs/ source.
    173   Profile* profile = Profile::FromWebUI(web_ui);
    174   content::WebUIDataSource::Add(profile, CreateWebRtcLogsUIHTMLSource());
    175 }
    176 
    177 // static
    178 bool WebRtcLogsUI::WebRtcLogsUIEnabled() {
    179 #if defined(GOOGLE_CHROME_BUILD)
    180 #if defined(OS_CHROMEOS)
    181   bool reporting_enabled = false;
    182   chromeos::CrosSettings::Get()->GetBoolean(chromeos::kStatsReportingPref,
    183                                             &reporting_enabled);
    184   return reporting_enabled;
    185 #elif defined(OS_ANDROID)
    186   // Android has it's own setings for metrics / crash uploading.
    187   PrefService* prefs = g_browser_process->local_state();
    188   return prefs->GetBoolean(prefs::kCrashReportingEnabled);
    189 #else
    190   PrefService* prefs = g_browser_process->local_state();
    191   return prefs->GetBoolean(prefs::kMetricsReportingEnabled);
    192 #endif
    193 #else
    194   return false;
    195 #endif
    196 }
    197