Home | History | Annotate | Download | only in webui 
      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/app_launcher_page_ui.h"
      6 
      7 #include "base/memory/ref_counted_memory.h"
      8 #include "base/metrics/histogram.h"
      9 #include "chrome/browser/profiles/profile.h"
     10 #include "chrome/browser/ui/webui/metrics_handler.h"
     11 #include "chrome/browser/ui/webui/ntp/app_launcher_handler.h"
     12 #include "chrome/browser/ui/webui/ntp/app_resource_cache_factory.h"
     13 #include "chrome/browser/ui/webui/ntp/core_app_launcher_handler.h"
     14 #include "chrome/browser/ui/webui/ntp/favicon_webui_handler.h"
     15 #include "chrome/browser/ui/webui/ntp/ntp_login_handler.h"
     16 #include "chrome/browser/ui/webui/ntp/ntp_resource_cache.h"
     17 #include "chrome/common/url_constants.h"
     18 #include "chrome/grit/generated_resources.h"
     19 #include "content/public/browser/browser_thread.h"
     20 #include "content/public/browser/render_process_host.h"
     21 #include "content/public/browser/web_ui.h"
     22 #include "extensions/browser/extension_system.h"
     23 #include "grit/theme_resources.h"
     24 #include "ui/base/l10n/l10n_util.h"
     25 #include "ui/base/resource/resource_bundle.h"
     26 
     27 #if defined(ENABLE_THEMES)
     28 #include "chrome/browser/ui/webui/theme_handler.h"
     29 #endif
     30 
     31 class ExtensionService;
     32 
     33 using content::BrowserThread;
     34 
     35 ///////////////////////////////////////////////////////////////////////////////
     36 // AppLauncherPageUI
     37 
     38 AppLauncherPageUI::AppLauncherPageUI(content::WebUI* web_ui)
     39     : content::WebUIController(web_ui) {
     40   web_ui->OverrideTitle(l10n_util::GetStringUTF16(IDS_APP_LAUNCHER_TAB_TITLE));
     41 
     42   if (NTPLoginHandler::ShouldShow(GetProfile()))
     43     web_ui->AddMessageHandler(new NTPLoginHandler());
     44 
     45   if (!GetProfile()->IsOffTheRecord()) {
     46     ExtensionService* service =
     47         extensions::ExtensionSystem::Get(GetProfile())->extension_service();
     48     // We should not be launched without an ExtensionService.
     49     DCHECK(service);
     50     web_ui->AddMessageHandler(new AppLauncherHandler(service));
     51     web_ui->AddMessageHandler(new CoreAppLauncherHandler());
     52     web_ui->AddMessageHandler(new FaviconWebUIHandler());
     53     web_ui->AddMessageHandler(new MetricsHandler());
     54   }
     55 
     56 #if defined(ENABLE_THEMES)
     57   // The theme handler can require some CPU, so do it after hooking up the most
     58   // visited handler. This allows the DB query for the new tab thumbs to happen
     59   // earlier.
     60   web_ui->AddMessageHandler(new ThemeHandler());
     61 #endif
     62 
     63   scoped_ptr<HTMLSource> html_source(
     64       new HTMLSource(GetProfile()->GetOriginalProfile()));
     65   content::URLDataSource::Add(GetProfile(), html_source.release());
     66 }
     67 
     68 AppLauncherPageUI::~AppLauncherPageUI() {
     69 }
     70 
     71 // static
     72 base::RefCountedMemory* AppLauncherPageUI::GetFaviconResourceBytes(
     73     ui::ScaleFactor scale_factor) {
     74   return ui::ResourceBundle::GetSharedInstance().
     75       LoadDataResourceBytesForScale(IDR_BOOKMARK_BAR_APPS_SHORTCUT,
     76                                     scale_factor);
     77 }
     78 
     79 Profile* AppLauncherPageUI::GetProfile() const {
     80   return Profile::FromWebUI(web_ui());
     81 }
     82 
     83 ///////////////////////////////////////////////////////////////////////////////
     84 // HTMLSource
     85 
     86 AppLauncherPageUI::HTMLSource::HTMLSource(Profile* profile)
     87     : profile_(profile) {
     88 }
     89 
     90 std::string AppLauncherPageUI::HTMLSource::GetSource() const {
     91   return chrome::kChromeUIAppLauncherPageHost;
     92 }
     93 
     94 void AppLauncherPageUI::HTMLSource::StartDataRequest(
     95     const std::string& path,
     96     int render_process_id,
     97     int render_frame_id,
     98     const content::URLDataSource::GotDataCallback& callback) {
     99   DCHECK_CURRENTLY_ON(BrowserThread::UI);
    100 
    101   NTPResourceCache* resource = AppResourceCacheFactory::GetForProfile(profile_);
    102   resource->set_should_show_most_visited_page(false);
    103   resource->set_should_show_other_devices_menu(false);
    104   resource->set_should_show_recently_closed_menu(false);
    105 
    106   content::RenderProcessHost* render_host =
    107       content::RenderProcessHost::FromID(render_process_id);
    108   NTPResourceCache::WindowType win_type = NTPResourceCache::GetWindowType(
    109       profile_, render_host);
    110   scoped_refptr<base::RefCountedMemory> html_bytes(
    111       resource->GetNewTabHTML(win_type));
    112 
    113   callback.Run(html_bytes.get());
    114 }
    115 
    116 std::string AppLauncherPageUI::HTMLSource::GetMimeType(
    117     const std::string& resource) const {
    118   return "text/html";
    119 }
    120 
    121 bool AppLauncherPageUI::HTMLSource::ShouldReplaceExistingSource() const {
    122   return false;
    123 }
    124 
    125 bool AppLauncherPageUI::HTMLSource::ShouldAddContentSecurityPolicy() const {
    126   return false;
    127 }
    128 
    129 AppLauncherPageUI::HTMLSource::~HTMLSource() {}
    130