[MD settings] appearance theme and wallpaper

chrome/browser/ui/webui/settings/appearance_handler.cc

 // Copyright (c) 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "chrome/browser/ui/webui/settings/appearance_handler.h"
 
 #include "base/bind.h"
 #include "base/logging.h"
 #include "base/values.h"
 #include "chrome/browser/chrome_notification_types.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/themes/theme_service.h"
 #include "chrome/browser/themes/theme_service_factory.h"
 #include "content/public/browser/notification_source.h"
 #include "content/public/browser/web_ui.h"
 
+#if defined(OS_CHROMEOS)
+#include "ash/desktop_background/user_wallpaper_delegate.h"
+#include "ash/shell.h"
+#endif
+
 namespace settings {
 
 AppearanceHandler::AppearanceHandler(content::WebUI* webui)
     : profile_(Profile::FromWebUI(webui)) {
   registrar_.Add(this, chrome::NOTIFICATION_BROWSER_THEME_CHANGED,
                  content::Source<ThemeService>(
                      ThemeServiceFactory::GetForProfile(profile_)));
 }
 
 AppearanceHandler::~AppearanceHandler() {
   registrar_.RemoveAll();
 }
 
 void AppearanceHandler::RegisterMessages() {
   web_ui()->RegisterMessageCallback(
       "resetTheme",
-      base::Bind(&AppearanceHandler::ResetTheme, base::Unretained(this)));
+      base::Bind(&AppearanceHandler::HandleResetTheme, base::Unretained(this)));
   web_ui()->RegisterMessageCallback(
       "getResetThemeEnabled",
-      base::Bind(&AppearanceHandler::GetResetThemeEnabled,
+      base::Bind(&AppearanceHandler::HandleGetResetThemeEnabled,
                  base::Unretained(this)));
+#if defined(OS_CHROMEOS)
+  web_ui()->RegisterMessageCallback(
+      "openWallpaperManager",
+      base::Bind(&AppearanceHandler::HandleOpenWallpaperManager,
+                 base::Unretained(this)));
+#endif
 }
 
 void AppearanceHandler::Observe(
     int type,
     const content::NotificationSource& source,
     const content::NotificationDetails& details) {
   switch (type) {
     case chrome::NOTIFICATION_BROWSER_THEME_CHANGED: {
       web_ui()->CallJavascriptFunction(
           "cr.webUIListenerCallback",
           base::StringValue("reset-theme-enabled-changed"),
           base::FundamentalValue(ResetThemeEnabled()));
       break;
     }
     default:
       NOTREACHED();
   }
 }
 
-void AppearanceHandler::ResetTheme(const base::ListValue* /* args */) {
+void AppearanceHandler::HandleResetTheme(const base::ListValue* /*args*/) {
   ThemeServiceFactory::GetForProfile(profile_)->UseDefaultTheme();
 }
 
 bool AppearanceHandler::ResetThemeEnabled() const {
   // TODO(jhawkins): Handle native/system theme button.
   return !ThemeServiceFactory::GetForProfile(profile_)->UsingDefaultTheme();
 }
 
-void AppearanceHandler::GetResetThemeEnabled(const base::ListValue* args) {
+void AppearanceHandler::HandleGetResetThemeEnabled(
+    const base::ListValue* args) {
   CHECK_EQ(1U, args->GetSize());
   const base::Value* callback_id;
   CHECK(args->Get(0, &callback_id));
-
   ResolveJavascriptCallback(*callback_id,
                             base::FundamentalValue(ResetThemeEnabled()));
 }
 
+#if defined(OS_CHROMEOS)
+void AppearanceHandler::HandleOpenWallpaperManager(
+    const base::ListValue* /*args*/) {
+  ash::Shell::GetInstance()->user_wallpaper_delegate()->OpenSetWallpaperPage();
+}
+#endif
+
 }  // namespace settings