src/chrome/browser/chromeos/login/help_app_launcher.cc

   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/login/helper.h"
  12 #include "chrome/browser/chromeos/profiles/profile_helper.h"
  13 #include "chrome/browser/extensions/extension_service.h"
  14 #include "chrome/grit/generated_resources.h"
  15 #include "chrome/grit/locale_settings.h"
  16 #include "content/public/browser/browser_thread.h"
  17 #include "extensions/browser/extension_system.h"
  18 #include "ui/base/l10n/l10n_util.h"
  19 #include "ui/gfx/rect.h"
  20 #include "ui/gfx/size.h"
  21
  22 using content::BrowserThread;
  23
  24 namespace {
  25
  26 const char kHelpAppFormat[] =
  27     "chrome-extension://honijodknafkokifofgiaalefdiedpko/oobe.html?id=%d";
  28
  29 }  // namespace
  30
  31 namespace chromeos {
  32
  33 ///////////////////////////////////////////////////////////////////////////////
  34 // HelpApp, public:
  35
  36 HelpAppLauncher::HelpAppLauncher(gfx::NativeWindow parent_window)
  37     : parent_window_(parent_window) {
  38 }
  39
  40 void HelpAppLauncher::ShowHelpTopic(HelpTopic help_topic_id) {
  41   Profile* profile = ProfileHelper::GetSigninProfile();
  42   ExtensionService* service =
  43       extensions::ExtensionSystem::Get(profile)->extension_service();
  44
  45   DCHECK(service);
  46   if (!service)
  47     return;
  48
  49   GURL url(base::StringPrintf(kHelpAppFormat,
  50                               static_cast<int>(help_topic_id)));
  51   // HelpApp component extension presents only in official builds so we can
  52   // show help only when the extensions is installed.
  53   if (service->extensions()->GetByID(url.host()))
  54     ShowHelpTopicDialog(profile, GURL(url));
  55 }
  56
  57 ///////////////////////////////////////////////////////////////////////////////
  58 // HelpApp, protected:
  59
  60 HelpAppLauncher::~HelpAppLauncher() {}
  61
  62 ///////////////////////////////////////////////////////////////////////////////
  63 // HelpApp, private:
  64
  65 void HelpAppLauncher::ShowHelpTopicDialog(Profile* profile,
  66                                           const GURL& topic_url) {
  67   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
  68   LoginWebDialog* dialog = new LoginWebDialog(
  69       profile,
  70       NULL,
  71       parent_window_,
  72       l10n_util::GetStringUTF16(IDS_LOGIN_OOBE_HELP_DIALOG_TITLE),
  73       topic_url,
  74       LoginWebDialog::STYLE_BUBBLE);
  75   gfx::Rect screen_bounds(chromeos::CalculateScreenBounds(gfx::Size()));
  76   dialog->SetDialogSize(l10n_util::GetLocalizedContentsWidthInPixels(
  77                             IDS_HELP_APP_DIALOG_WIDTH_PIXELS),
  78                         l10n_util::GetLocalizedContentsWidthInPixels(
  79                             IDS_HELP_APP_DIALOG_HEIGHT_PIXELS));
  80   dialog->Show();
  81   // The dialog object will be deleted on dialog close.
  82 }
  83
  84 }  // namespace chromeos