chrome/browser/ui/webui/theme_handler.cc

   1 // Copyright (c) 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/theme_handler.h"
   6
   7 #include "base/values.h"
   8 #include "chrome/browser/chrome_notification_types.h"
   9 #include "chrome/browser/profiles/profile.h"
  10 #include "chrome/browser/themes/theme_service.h"
  11 #include "chrome/browser/themes/theme_service_factory.h"
  12 #include "chrome/browser/ui/webui/theme_source.h"
  13 #include "content/public/browser/notification_service.h"
  14 #include "content/public/browser/web_ui.h"
  15 #include "grit/theme_resources.h"
  16
  17 ///////////////////////////////////////////////////////////////////////////////
  18 // ThemeHandler
  19
  20 ThemeHandler::ThemeHandler() {
  21 }
  22
  23 ThemeHandler::~ThemeHandler() {
  24 }
  25
  26 void ThemeHandler::RegisterMessages() {
  27   // These are not actual message registrations, but can't be done in the
  28   // constructor since they need the web_ui value to be set, which is done
  29   // post-construction, but before registering messages.
  30   InitializeCSSCaches();
  31   // Listen for theme installation.
  32   registrar_.Add(this, chrome::NOTIFICATION_BROWSER_THEME_CHANGED,
  33                  content::Source<ThemeService>(
  34                      ThemeServiceFactory::GetForProfile(GetProfile())));
  35 }
  36
  37 void ThemeHandler::Observe(int type,
  38                            const content::NotificationSource& source,
  39                            const content::NotificationDetails& details) {
  40   DCHECK_EQ(chrome::NOTIFICATION_BROWSER_THEME_CHANGED, type);
  41   InitializeCSSCaches();
  42   base::FundamentalValue attribution(
  43       ThemeServiceFactory::GetForProfile(GetProfile())->HasCustomImage(
  44           IDR_THEME_NTP_ATTRIBUTION));
  45   web_ui()->CallJavascriptFunction("ntp.themeChanged", attribution);
  46 }
  47
  48 void ThemeHandler::InitializeCSSCaches() {
  49   Profile* profile = GetProfile();
  50   ThemeSource* theme = new ThemeSource(profile);
  51   content::URLDataSource::Add(profile, theme);
  52 }
  53
  54 Profile* ThemeHandler::GetProfile() const {
  55   return Profile::FromWebUI(web_ui());
  56 }