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
33using content::WebContents;
34
35namespace task_manager {
36
37namespace {
38
39// Returns true if the WebContents is currently owned by the prerendering
40// manager.
41bool 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.
53class TabContentsResource : public RendererResource {
54 public:
55  explicit TabContentsResource(content::WebContents* web_contents);
56  virtual ~TabContentsResource();
57
58  // Resource methods:
59  virtual Type GetType() const OVERRIDE;
60  virtual base::string16 GetTitle() const OVERRIDE;
61  virtual gfx::ImageSkia GetIcon() const OVERRIDE;
62  virtual 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
75gfx::ImageSkia* TabContentsResource::prerender_icon_ = NULL;
76
77TabContentsResource::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
88TabContentsResource::~TabContentsResource() {}
89
90bool TabContentsResource::HostsExtension() const {
91  return web_contents_->GetURL().SchemeIs(extensions::kExtensionScheme);
92}
93
94Resource::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
100base::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
123gfx::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
131WebContents* TabContentsResource::GetWebContents() const {
132  return web_contents_;
133}
134
135TabContentsInformation::TabContentsInformation() {}
136
137TabContentsInformation::~TabContentsInformation() {}
138
139bool TabContentsInformation::CheckOwnership(
140    content::WebContents* web_contents) {
141  return chrome::FindBrowserWithWebContents(web_contents) ||
142         DevToolsWindow::IsDevToolsWindow(web_contents) ||
143         IsContentsPrerendering(web_contents);
144}
145
146void 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
172scoped_ptr<RendererResource> TabContentsInformation::MakeResource(
173    content::WebContents* web_contents) {
174  return scoped_ptr<RendererResource>(new TabContentsResource(web_contents));
175}
176
177}  // namespace task_manager
178