chrome/browser/task_manager/tab_contents_information.cc

   1 // Copyright 2014 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/task_manager/tab_contents_information.h"
   6
   7 #include "base/callback.h"
   8 #include "base/strings/utf_string_conversions.h"
   9 #include "chrome/browser/browser_process.h"
  10 #include "chrome/browser/devtools/devtools_window.h"
  11 #include "chrome/browser/favicon/favicon_tab_helper.h"
  12 #include "chrome/browser/prerender/prerender_manager.h"
  13 #include "chrome/browser/prerender/prerender_manager_factory.h"
  14 #include "chrome/browser/profiles/profile.h"
  15 #include "chrome/browser/profiles/profile_manager.h"
  16 #include "chrome/browser/task_manager/renderer_resource.h"
  17 #include "chrome/browser/task_manager/task_manager_util.h"
  18 #include "chrome/browser/ui/browser.h"
  19 #include "chrome/browser/ui/browser_finder.h"
  20 #include "chrome/browser/ui/browser_iterator.h"
  21 #include "chrome/browser/ui/tab_contents/tab_contents_iterator.h"
  22 #include "content/public/browser/render_process_host.h"
  23 #include "content/public/browser/web_contents.h"
  24 #include "extensions/browser/extension_registry.h"
  25 #include "extensions/browser/process_map.h"
  26 #include "extensions/common/constants.h"
  27 #include "extensions/common/extension_set.h"
  28 #include "grit/theme_resources.h"
  29 #include "ui/base/l10n/l10n_util.h"
  30 #include "ui/base/resource/resource_bundle.h"
  31 #include "ui/gfx/image/image_skia.h"
  32
  33 using content::WebContents;
  34
  35 namespace task_manager {
  36
  37 namespace {
  38
  39 // Returns true if the WebContents is currently owned by the prerendering
  40 // manager.
  41 bool IsContentsPrerendering(WebContents* web_contents) {
  42   Profile* profile =
  43       Profile::FromBrowserContext(web_contents->GetBrowserContext());
  44   prerender::PrerenderManager* prerender_manager =
  45       prerender::PrerenderManagerFactory::GetForProfile(profile);
  46   return prerender_manager &&
  47          prerender_manager->IsWebContentsPrerendering(web_contents, NULL);
  48 }
  49
  50 }  // namespace
  51
  52 // Tracks a single tab contents, prerendered page, or Instant page.
  53 class TabContentsResource : public RendererResource {
  54  public:
  55   explicit TabContentsResource(content::WebContents* web_contents);
  56   ~TabContentsResource() override;
  57
  58   // Resource methods:
  59   Type GetType() const override;
  60   base::string16 GetTitle() const override;
  61   gfx::ImageSkia GetIcon() const override;
  62   content::WebContents* GetWebContents() const override;
  63
  64  private:
  65   // Returns true if contains content rendered by an extension.
  66   bool HostsExtension() const;
  67
  68   static gfx::ImageSkia* prerender_icon_;
  69   content::WebContents* web_contents_;
  70   Profile* profile_;
  71
  72   DISALLOW_COPY_AND_ASSIGN(TabContentsResource);
  73 };
  74
  75 gfx::ImageSkia* TabContentsResource::prerender_icon_ = NULL;
  76
  77 TabContentsResource::TabContentsResource(WebContents* web_contents)
  78     : RendererResource(web_contents->GetRenderProcessHost()->GetHandle(),
  79                        web_contents->GetRenderViewHost()),
  80       web_contents_(web_contents),
  81       profile_(Profile::FromBrowserContext(web_contents->GetBrowserContext())) {
  82   if (!prerender_icon_) {
  83     ResourceBundle& rb = ResourceBundle::GetSharedInstance();
  84     prerender_icon_ = rb.GetImageSkiaNamed(IDR_PRERENDER);
  85   }
  86 }
  87
  88 TabContentsResource::~TabContentsResource() {}
  89
  90 bool TabContentsResource::HostsExtension() const {
  91   return web_contents_->GetURL().SchemeIs(extensions::kExtensionScheme);
  92 }
  93
  94 Resource::Type TabContentsResource::GetType() const {
  95   // A tab that loads an extension URL is considered to be an extension for
  96   // these purposes, although it's tracked as a TabContentsResource.
  97   return HostsExtension() ? EXTENSION : RENDERER;
  98 }
  99
 100 base::string16 TabContentsResource::GetTitle() const {
 101   // Fall back on the URL if there's no title.
 102   GURL url = web_contents_->GetURL();
 103   base::string16 tab_title = util::GetTitleFromWebContents(web_contents_);
 104
 105   // Only classify as an app if the URL is an app and the tab is hosting an
 106   // extension process.  (It's possible to be showing the URL from before it
 107   // was installed as an app.)
 108   extensions::ProcessMap* process_map = extensions::ProcessMap::Get(profile_);
 109   bool is_app =
 110       extensions::ExtensionRegistry::Get(profile_)
 111           ->enabled_extensions().GetAppByURL(url) != NULL &&
 112       process_map->Contains(web_contents_->GetRenderProcessHost()->GetID());
 113
 114   int message_id = util::GetMessagePrefixID(
 115       is_app,
 116       HostsExtension(),
 117       profile_->IsOffTheRecord(),
 118       IsContentsPrerendering(web_contents_),
 119       false);  // is_background
 120   return l10n_util::GetStringFUTF16(message_id, tab_title);
 121 }
 122
 123 gfx::ImageSkia TabContentsResource::GetIcon() const {
 124   if (IsContentsPrerendering(web_contents_))
 125     return *prerender_icon_;
 126   FaviconTabHelper::CreateForWebContents(web_contents_);
 127   return FaviconTabHelper::FromWebContents(web_contents_)->
 128       GetFavicon().AsImageSkia();
 129 }
 130
 131 WebContents* TabContentsResource::GetWebContents() const {
 132   return web_contents_;
 133 }
 134
 135 TabContentsInformation::TabContentsInformation() {}
 136
 137 TabContentsInformation::~TabContentsInformation() {}
 138
 139 bool TabContentsInformation::CheckOwnership(
 140     content::WebContents* web_contents) {
 141   return chrome::FindBrowserWithWebContents(web_contents) ||
 142          DevToolsWindow::IsDevToolsWindow(web_contents) ||
 143          IsContentsPrerendering(web_contents);
 144 }
 145
 146 void TabContentsInformation::GetAll(const NewWebContentsCallback& callback) {
 147   for (TabContentsIterator iterator; !iterator.done(); iterator.Next()) {
 148     callback.Run(*iterator);
 149     WebContents* devtools =
 150         DevToolsWindow::GetInTabWebContents(*iterator, NULL);
 151     if (devtools)
 152       callback.Run(devtools);
 153   }
 154
 155   // Because a WebContents* may start its life as a prerender, and later be
 156   // put into a tab, this class tracks the prerender contents in the same
 157   // way as the tab contents.
 158   std::vector<Profile*> profiles(
 159       g_browser_process->profile_manager()->GetLoadedProfiles());
 160   for (size_t i = 0; i < profiles.size(); ++i) {
 161     prerender::PrerenderManager* prerender_manager =
 162         prerender::PrerenderManagerFactory::GetForProfile(profiles[i]);
 163     if (prerender_manager) {
 164       const std::vector<content::WebContents*> contentses =
 165           prerender_manager->GetAllPrerenderingContents();
 166       for (size_t j = 0; j < contentses.size(); ++j)
 167         callback.Run(contentses[j]);
 168     }
 169   }
 170 }
 171
 172 scoped_ptr<RendererResource> TabContentsInformation::MakeResource(
 173     content::WebContents* web_contents) {
 174   return scoped_ptr<RendererResource>(new TabContentsResource(web_contents));
 175 }
 176
 177 }  // namespace task_manager