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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 "chrome/browser/chromeos/login/help_app_launcher.h"
      6 
      7 #include <string>
      8 
      9 #include "base/strings/stringprintf.h"
     10 #include "base/strings/utf_string_conversions.h"
     11 #include "chrome/browser/chromeos/profiles/profile_helper.h"
     12 #include "chrome/browser/extensions/extension_service.h"
     13 #include "chrome/browser/extensions/extension_system.h"
     14 #include "content/public/browser/browser_thread.h"
     15 #include "grit/generated_resources.h"
     16 #include "ui/base/l10n/l10n_util.h"
     17 
     18 using content::BrowserThread;
     19 
     20 namespace {
     21 
     22 const char kHelpAppFormat[] =
     23     "chrome-extension://honijodknafkokifofgiaalefdiedpko/oobe.html?id=%d";
     24 
     25 }  // namespace
     26 
     27 namespace chromeos {
     28 
     29 ///////////////////////////////////////////////////////////////////////////////
     30 // HelpApp, public:
     31 
     32 HelpAppLauncher::HelpAppLauncher(gfx::NativeWindow parent_window)
     33     : parent_window_(parent_window) {
     34 }
     35 
     36 void HelpAppLauncher::ShowHelpTopic(HelpTopic help_topic_id) {
     37   Profile* profile = ProfileHelper::GetSigninProfile();
     38   ExtensionService* service =
     39       extensions::ExtensionSystem::Get(profile)->extension_service();
     40 
     41   DCHECK(service);
     42   if (!service)
     43     return;
     44 
     45   GURL url(base::StringPrintf(kHelpAppFormat,
     46                               static_cast<int>(help_topic_id)));
     47   // HelpApp component extension presents only in official builds so we can
     48   // show help only when the extensions is installed.
     49   if (service->extensions()->GetByID(url.host()))
     50     ShowHelpTopicDialog(GURL(url));
     51 }
     52 
     53 ///////////////////////////////////////////////////////////////////////////////
     54 // HelpApp, protected:
     55 
     56 HelpAppLauncher::~HelpAppLauncher() {}
     57 
     58 ///////////////////////////////////////////////////////////////////////////////
     59 // HelpApp, private:
     60 
     61 void HelpAppLauncher::ShowHelpTopicDialog(const GURL& topic_url) {
     62   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
     63   LoginWebDialog* dialog = new LoginWebDialog(
     64       NULL,
     65       parent_window_,
     66       l10n_util::GetStringUTF16(IDS_LOGIN_OOBE_HELP_DIALOG_TITLE),
     67       topic_url,
     68       LoginWebDialog::STYLE_BUBBLE);
     69   dialog->Show();
     70   // The dialog object will be deleted on dialog close.
     71 }
     72 
     73 }  // namespace chromeos
     74