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/grit/generated_resources.h"
  14 #include "chrome/grit/locale_settings.h"
  15 #include "content/public/browser/browser_thread.h"
  16 #include "extensions/browser/extension_registry.h"
  17 #include "ui/base/l10n/l10n_util.h"
  18 #include "ui/gfx/geometry/rect.h"
  19 #include "ui/gfx/geometry/size.h"
  20
  21 using content::BrowserThread;
  22 using extensions::ExtensionRegistry;
  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   ExtensionRegistry* registry = ExtensionRegistry::Get(profile);
  43
  44   DCHECK(registry);
  45   if (!registry)
  46     return;
  47
  48   GURL url(base::StringPrintf(kHelpAppFormat,
  49                               static_cast<int>(help_topic_id)));
  50   // HelpApp component extension presents only in official builds so we can
  51   // show help only when the extensions is installed.
  52   if (registry->enabled_extensions().GetByID(url.host()))
  53     ShowHelpTopicDialog(profile, GURL(url));
  54 }
  55
  56 ///////////////////////////////////////////////////////////////////////////////
  57 // HelpApp, protected:
  58
  59 HelpAppLauncher::~HelpAppLauncher() {}
  60
  61 ///////////////////////////////////////////////////////////////////////////////
  62 // HelpApp, private:
  63
  64 void HelpAppLauncher::ShowHelpTopicDialog(Profile* profile,
  65                                           const GURL& topic_url) {
  66   DCHECK_CURRENTLY_ON(BrowserThread::UI);
  67   LoginWebDialog* dialog = new LoginWebDialog(
  68       profile,
  69       NULL,
  70       parent_window_,
  71       l10n_util::GetStringUTF16(IDS_LOGIN_OOBE_HELP_DIALOG_TITLE),
  72       topic_url);
  73   gfx::Rect screen_bounds(chromeos::CalculateScreenBounds(gfx::Size()));
  74   dialog->SetDialogSize(l10n_util::GetLocalizedContentsWidthInPixels(
  75                             IDS_HELP_APP_DIALOG_WIDTH_PIXELS),
  76                         l10n_util::GetLocalizedContentsWidthInPixels(
  77                             IDS_HELP_APP_DIALOG_HEIGHT_PIXELS));
  78   dialog->Show();
  79   // The dialog object will be deleted on dialog close.
  80 }
  81
  82 }  // namespace chromeos