default_browser_prompt.cc revision ca12bfac764ba476d6cd062bf1dde12cc64c3f40 
1// Copyright (c) 2012 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/startup/default_browser_prompt.h"
6
7#include "base/memory/weak_ptr.h"
8#include "base/message_loop/message_loop.h"
9#include "base/metrics/histogram.h"
10#include "base/prefs/pref_registry_simple.h"
11#include "base/prefs/pref_service.h"
12#include "base/version.h"
13#include "chrome/browser/browser_process.h"
14#include "chrome/browser/first_run/first_run.h"
15#include "chrome/browser/infobars/confirm_infobar_delegate.h"
16#include "chrome/browser/infobars/infobar_service.h"
17#include "chrome/browser/profiles/profile.h"
18#include "chrome/browser/shell_integration.h"
19#include "chrome/browser/ui/browser.h"
20#include "chrome/browser/ui/browser_finder.h"
21#include "chrome/browser/ui/tabs/tab_strip_model.h"
22#include "chrome/common/chrome_version_info.h"
23#include "chrome/common/pref_names.h"
24#include "chrome/installer/util/master_preferences.h"
25#include "chrome/installer/util/master_preferences_constants.h"
26#include "content/public/browser/browser_thread.h"
27#include "content/public/browser/navigation_details.h"
28#include "content/public/browser/web_contents.h"
29#include "grit/chromium_strings.h"
30#include "grit/generated_resources.h"
31#include "grit/theme_resources.h"
32#include "ui/base/l10n/l10n_util.h"
33
34
35namespace {
36
37// Calls the appropriate function for setting Chrome as the default browser.
38// This requires IO access (registry) and may result in interaction with a
39// modal system UI.
40void SetChromeAsDefaultBrowser(bool interactive_flow, PrefService* prefs) {
41  if (interactive_flow) {
42    UMA_HISTOGRAM_COUNTS("DefaultBrowserWarning.SetAsDefaultUI", 1);
43    if (!ShellIntegration::SetAsDefaultBrowserInteractive()) {
44      UMA_HISTOGRAM_COUNTS("DefaultBrowserWarning.SetAsDefaultUIFailed", 1);
45    } else if (ShellIntegration::GetDefaultBrowser() ==
46               ShellIntegration::NOT_DEFAULT) {
47      // If the interaction succeeded but we are still not the default browser
48      // it likely means the user simply selected another browser from the
49      // panel. We will respect this choice and write it down as 'no, thanks'.
50      UMA_HISTOGRAM_COUNTS("DefaultBrowserWarning.DontSetAsDefault", 1);
51    }
52  } else {
53    UMA_HISTOGRAM_COUNTS("DefaultBrowserWarning.SetAsDefault", 1);
54    ShellIntegration::SetAsDefaultBrowser();
55  }
56}
57
58// The delegate for the infobar shown when Chrome is not the default browser.
59class DefaultBrowserInfoBarDelegate : public ConfirmInfoBarDelegate {
60 public:
61  // Creates a default browser infobar delegate and adds it to
62  // |infobar_service|.
63  static void Create(InfoBarService* infobar_service,
64                     PrefService* prefs,
65                     bool interactive_flow_required);
66
67 private:
68  DefaultBrowserInfoBarDelegate(InfoBarService* infobar_service,
69                                PrefService* prefs,
70                                bool interactive_flow_required);
71  virtual ~DefaultBrowserInfoBarDelegate();
72
73  void AllowExpiry() { should_expire_ = true; }
74
75  // ConfirmInfoBarDelegate:
76  virtual int GetIconID() const OVERRIDE;
77  virtual string16 GetMessageText() const OVERRIDE;
78  virtual string16 GetButtonLabel(InfoBarButton button) const OVERRIDE;
79  virtual bool NeedElevation(InfoBarButton button) const OVERRIDE;
80  virtual bool Accept() OVERRIDE;
81  virtual bool Cancel() OVERRIDE;
82  virtual bool ShouldExpireInternal(
83      const content::LoadCommittedDetails& details) const OVERRIDE;
84
85  // The prefs to use.
86  PrefService* prefs_;
87
88  // Whether the user clicked one of the buttons.
89  bool action_taken_;
90
91  // Whether the info-bar should be dismissed on the next navigation.
92  bool should_expire_;
93
94  // Whether changing the default application will require entering the
95  // modal-UI flow.
96  const bool interactive_flow_required_;
97
98  // Used to delay the expiration of the info-bar.
99  base::WeakPtrFactory<DefaultBrowserInfoBarDelegate> weak_factory_;
100
101  DISALLOW_COPY_AND_ASSIGN(DefaultBrowserInfoBarDelegate);
102};
103
104// static
105void DefaultBrowserInfoBarDelegate::Create(InfoBarService* infobar_service,
106                                           PrefService* prefs,
107                                           bool interactive_flow_required) {
108  infobar_service->AddInfoBar(scoped_ptr<InfoBarDelegate>(
109      new DefaultBrowserInfoBarDelegate(infobar_service, prefs,
110                                        interactive_flow_required)));
111}
112
113DefaultBrowserInfoBarDelegate::DefaultBrowserInfoBarDelegate(
114    InfoBarService* infobar_service,
115    PrefService* prefs,
116    bool interactive_flow_required)
117    : ConfirmInfoBarDelegate(infobar_service),
118      prefs_(prefs),
119      action_taken_(false),
120      should_expire_(false),
121      interactive_flow_required_(interactive_flow_required),
122      weak_factory_(this) {
123  // We want the info-bar to stick-around for few seconds and then be hidden
124  // on the next navigation after that.
125  base::MessageLoop::current()->PostDelayedTask(
126      FROM_HERE,
127      base::Bind(&DefaultBrowserInfoBarDelegate::AllowExpiry,
128                 weak_factory_.GetWeakPtr()),
129      base::TimeDelta::FromSeconds(8));
130}
131
132DefaultBrowserInfoBarDelegate::~DefaultBrowserInfoBarDelegate() {
133  if (!action_taken_)
134    UMA_HISTOGRAM_COUNTS("DefaultBrowserWarning.Ignored", 1);
135}
136
137int DefaultBrowserInfoBarDelegate::GetIconID() const {
138  return IDR_PRODUCT_LOGO_32;
139}
140
141string16 DefaultBrowserInfoBarDelegate::GetMessageText() const {
142  return l10n_util::GetStringUTF16(IDS_DEFAULT_BROWSER_INFOBAR_SHORT_TEXT);
143}
144
145string16 DefaultBrowserInfoBarDelegate::GetButtonLabel(
146    InfoBarButton button) const {
147  return l10n_util::GetStringUTF16((button == BUTTON_OK) ?
148      IDS_SET_AS_DEFAULT_INFOBAR_BUTTON_LABEL :
149      IDS_DONT_ASK_AGAIN_INFOBAR_BUTTON_LABEL);
150}
151
152bool DefaultBrowserInfoBarDelegate::NeedElevation(InfoBarButton button) const {
153  return button == BUTTON_OK;
154}
155
156bool DefaultBrowserInfoBarDelegate::Accept() {
157  action_taken_ = true;
158  content::BrowserThread::PostTask(
159      content::BrowserThread::FILE, FROM_HERE,
160      base::Bind(&SetChromeAsDefaultBrowser, interactive_flow_required_,
161                 prefs_));
162
163  return true;
164}
165
166bool DefaultBrowserInfoBarDelegate::Cancel() {
167  action_taken_ = true;
168  UMA_HISTOGRAM_COUNTS("DefaultBrowserWarning.DontSetAsDefault", 1);
169  // User clicked "Don't ask me again", remember that.
170  prefs_->SetBoolean(prefs::kCheckDefaultBrowser, false);
171  return true;
172}
173
174bool DefaultBrowserInfoBarDelegate::ShouldExpireInternal(
175    const content::LoadCommittedDetails& details) const {
176  return should_expire_;
177}
178
179void NotifyNotDefaultBrowserCallback(chrome::HostDesktopType desktop_type) {
180  Browser* browser = chrome::FindLastActiveWithHostDesktopType(desktop_type);
181  if (!browser)
182    return;  // Reached during ui tests.
183
184  // In ChromeBot tests, there might be a race. This line appears to get
185  // called during shutdown and |tab| can be NULL.
186  content::WebContents* web_contents =
187      browser->tab_strip_model()->GetActiveWebContents();
188  if (!web_contents)
189    return;
190
191  DefaultBrowserInfoBarDelegate::Create(
192      InfoBarService::FromWebContents(web_contents),
193      Profile::FromBrowserContext(
194          web_contents->GetBrowserContext())->GetPrefs(),
195      (ShellIntegration::CanSetAsDefaultBrowser() ==
196          ShellIntegration::SET_DEFAULT_INTERACTIVE));
197}
198
199void CheckDefaultBrowserCallback(chrome::HostDesktopType desktop_type) {
200  if (ShellIntegration::GetDefaultBrowser() == ShellIntegration::NOT_DEFAULT) {
201    ShellIntegration::DefaultWebClientSetPermission default_change_mode =
202        ShellIntegration::CanSetAsDefaultBrowser();
203
204    if (default_change_mode != ShellIntegration::SET_DEFAULT_NOT_ALLOWED) {
205      content::BrowserThread::PostTask(
206          content::BrowserThread::UI, FROM_HERE,
207          base::Bind(&NotifyNotDefaultBrowserCallback, desktop_type));
208    }
209  }
210}
211
212}  // namespace
213
214namespace chrome {
215
216void RegisterDefaultBrowserPromptPrefs(PrefRegistrySimple* registry) {
217  registry->RegisterStringPref(
218      prefs::kBrowserSuppressDefaultBrowserPrompt, std::string());
219}
220
221void ShowDefaultBrowserPrompt(Profile* profile, HostDesktopType desktop_type) {
222  // We do not check if we are the default browser if:
223  // - The user said "don't ask me again" on the infobar earlier.
224  // - There is a policy in control of this setting.
225  // - The "suppress_default_browser_prompt_for_version" master preference is
226  //     set to the current version.
227  if (!profile->GetPrefs()->GetBoolean(prefs::kCheckDefaultBrowser))
228    return;
229
230  if (g_browser_process->local_state()->IsManagedPreference(
231      prefs::kDefaultBrowserSettingEnabled)) {
232    if (g_browser_process->local_state()->GetBoolean(
233        prefs::kDefaultBrowserSettingEnabled)) {
234      content::BrowserThread::PostTask(
235          content::BrowserThread::FILE, FROM_HERE,
236          base::Bind(
237              base::IgnoreResult(&ShellIntegration::SetAsDefaultBrowser)));
238    } else {
239      // TODO(pastarmovj): We can't really do anything meaningful here yet but
240      // just prevent showing the infobar.
241    }
242    return;
243  }
244
245  const std::string disable_version_string =
246      g_browser_process->local_state()->GetString(
247          prefs::kBrowserSuppressDefaultBrowserPrompt);
248  const Version disable_version(disable_version_string);
249  DCHECK(disable_version_string.empty() || disable_version.IsValid());
250  if (disable_version.IsValid()) {
251    const chrome::VersionInfo version_info;
252    if (disable_version.Equals(Version(version_info.Version())))
253      return;
254  }
255
256  content::BrowserThread::PostTask(
257      content::BrowserThread::FILE, FROM_HERE,
258      base::Bind(&CheckDefaultBrowserCallback, desktop_type));
259
260}
261
262#if !defined(OS_WIN)
263bool ShowFirstRunDefaultBrowserPrompt(Profile* profile) {
264  return false;
265}
266#endif
267
268}  // namespace chrome
269