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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/extensions/theme_installed_infobar_delegate.h"
      6 
      7 #include <string>
      8 
      9 #include "base/strings/utf_string_conversions.h"
     10 #include "chrome/browser/chrome_notification_types.h"
     11 #include "chrome/browser/extensions/extension_service.h"
     12 #include "chrome/browser/infobars/infobar_service.h"
     13 #include "chrome/browser/profiles/profile.h"
     14 #include "chrome/browser/themes/theme_service.h"
     15 #include "chrome/browser/themes/theme_service_factory.h"
     16 #include "chrome/browser/ui/browser_finder.h"
     17 #include "chrome/browser/ui/tabs/tab_strip_model.h"
     18 #include "components/infobars/core/infobar.h"
     19 #include "content/public/browser/notification_source.h"
     20 #include "extensions/common/extension.h"
     21 #include "grit/generated_resources.h"
     22 #include "grit/theme_resources.h"
     23 #include "ui/base/l10n/l10n_util.h"
     24 
     25 
     26 // static
     27 void ThemeInstalledInfoBarDelegate::Create(
     28     const extensions::Extension* new_theme,
     29     Profile* profile,
     30     const std::string& previous_theme_id,
     31     bool previous_using_system_theme) {
     32   DCHECK(new_theme);
     33   if (!new_theme->is_theme())
     34     return;
     35 
     36   // Create the new infobar.
     37   // FindTabbedBrowser() is called with |match_original_profiles| true because a
     38   // theme install in either a normal or incognito window for a profile affects
     39   // all normal and incognito windows for that profile.
     40   Browser* browser =
     41       chrome::FindTabbedBrowser(profile, true, chrome::GetActiveDesktop());
     42   if (!browser)
     43     return;
     44   content::WebContents* web_contents =
     45       browser->tab_strip_model()->GetActiveWebContents();
     46   if (!web_contents)
     47     return;
     48   InfoBarService* infobar_service =
     49       InfoBarService::FromWebContents(web_contents);
     50   ThemeService* theme_service = ThemeServiceFactory::GetForProfile(profile);
     51   scoped_ptr<infobars::InfoBar> new_infobar(
     52       ConfirmInfoBarDelegate::CreateInfoBar(scoped_ptr<ConfirmInfoBarDelegate>(
     53           new ThemeInstalledInfoBarDelegate(
     54               profile->GetExtensionService(), theme_service, new_theme,
     55               previous_theme_id, previous_using_system_theme))));
     56 
     57   // If there's a previous theme infobar, just replace that instead of adding a
     58   // new one.
     59   for (size_t i = 0; i < infobar_service->infobar_count(); ++i) {
     60     infobars::InfoBar* old_infobar = infobar_service->infobar_at(i);
     61     ThemeInstalledInfoBarDelegate* theme_infobar =
     62         old_infobar->delegate()->AsThemePreviewInfobarDelegate();
     63     if (theme_infobar) {
     64       // If the user installed the same theme twice, ignore the second install
     65       // and keep the first install info bar, so that they can easily undo to
     66       // get back the previous theme.
     67       if (theme_infobar->theme_id_ != new_theme->id()) {
     68         infobar_service->ReplaceInfoBar(old_infobar, new_infobar.Pass());
     69         theme_service->OnInfobarDisplayed();
     70       }
     71       return;
     72     }
     73   }
     74 
     75   // No previous theme infobar, so add this.
     76   infobar_service->AddInfoBar(new_infobar.Pass());
     77   theme_service->OnInfobarDisplayed();
     78 }
     79 
     80 ThemeInstalledInfoBarDelegate::ThemeInstalledInfoBarDelegate(
     81     ExtensionService* extension_service,
     82     ThemeService* theme_service,
     83     const extensions::Extension* new_theme,
     84     const std::string& previous_theme_id,
     85     bool previous_using_system_theme)
     86     : ConfirmInfoBarDelegate(),
     87       extension_service_(extension_service),
     88       theme_service_(theme_service),
     89       name_(new_theme->name()),
     90       theme_id_(new_theme->id()),
     91       previous_theme_id_(previous_theme_id),
     92       previous_using_system_theme_(previous_using_system_theme) {
     93   registrar_.Add(this, chrome::NOTIFICATION_BROWSER_THEME_CHANGED,
     94                  content::Source<ThemeService>(theme_service_));
     95 }
     96 
     97 ThemeInstalledInfoBarDelegate::~ThemeInstalledInfoBarDelegate() {
     98   // We don't want any notifications while we're running our destructor.
     99   registrar_.RemoveAll();
    100 
    101   theme_service_->OnInfobarDestroyed();
    102 }
    103 
    104 int ThemeInstalledInfoBarDelegate::GetIconID() const {
    105   // TODO(aa): Reply with the theme's icon, but this requires reading it
    106   // asynchronously from disk.
    107   return IDR_INFOBAR_THEME;
    108 }
    109 
    110 infobars::InfoBarDelegate::Type ThemeInstalledInfoBarDelegate::GetInfoBarType()
    111     const {
    112   return PAGE_ACTION_TYPE;
    113 }
    114 
    115 ThemeInstalledInfoBarDelegate*
    116     ThemeInstalledInfoBarDelegate::AsThemePreviewInfobarDelegate() {
    117   return this;
    118 }
    119 
    120 base::string16 ThemeInstalledInfoBarDelegate::GetMessageText() const {
    121   return l10n_util::GetStringFUTF16(IDS_THEME_INSTALL_INFOBAR_LABEL,
    122                                     base::UTF8ToUTF16(name_));
    123 }
    124 
    125 int ThemeInstalledInfoBarDelegate::GetButtons() const {
    126   return BUTTON_CANCEL;
    127 }
    128 
    129 base::string16 ThemeInstalledInfoBarDelegate::GetButtonLabel(
    130     InfoBarButton button) const {
    131   DCHECK_EQ(BUTTON_CANCEL, button);
    132   return l10n_util::GetStringUTF16(IDS_THEME_INSTALL_INFOBAR_UNDO_BUTTON);
    133 }
    134 
    135 bool ThemeInstalledInfoBarDelegate::Cancel() {
    136   if (!previous_theme_id_.empty()) {
    137     const extensions::Extension* previous_theme =
    138         extension_service_->GetExtensionById(previous_theme_id_, true);
    139     if (previous_theme) {
    140       theme_service_->SetTheme(previous_theme);
    141       return false;  // The theme change will close us.
    142     }
    143   }
    144 
    145   if (previous_using_system_theme_)
    146     theme_service_->UseSystemTheme();
    147   else
    148     theme_service_->UseDefaultTheme();
    149   return false;  // The theme change will close us.
    150 }
    151 
    152 void ThemeInstalledInfoBarDelegate::Observe(
    153     int type,
    154     const content::NotificationSource& source,
    155     const content::NotificationDetails& details) {
    156   DCHECK_EQ(chrome::NOTIFICATION_BROWSER_THEME_CHANGED, type);
    157   // If the new theme is different from what this info bar is associated with,
    158   // close this info bar since it is no longer relevant.
    159   if (theme_id_ != theme_service_->GetThemeID())
    160     infobar()->RemoveSelf();
    161 }
    162