default_browser_prompt.cc revision 90dce4d38c5ff5333bea97d859d4e484e27edf0c 
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.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
34using content::BrowserThread;
35
36namespace {
37
38// Calls the appropriate function for setting Chrome as the default browser.
39// This requires IO access (registry) and may result in interaction with a
40// modal system UI.
41void SetChromeAsDefaultBrowser(bool interactive_flow, PrefService* prefs) {
42  if (interactive_flow) {
43    UMA_HISTOGRAM_COUNTS("DefaultBrowserWarning.SetAsDefaultUI", 1);
44    if (!ShellIntegration::SetAsDefaultBrowserInteractive()) {
45      UMA_HISTOGRAM_COUNTS("DefaultBrowserWarning.SetAsDefaultUIFailed", 1);
46    } else if (ShellIntegration::GetDefaultBrowser() ==
47               ShellIntegration::NOT_DEFAULT) {
48      // If the interaction succeeded but we are still not the default browser
49      // it likely means the user simply selected another browser from the
50      // panel. We will respect this choice and write it down as 'no, thanks'.
51      UMA_HISTOGRAM_COUNTS("DefaultBrowserWarning.DontSetAsDefault", 1);
52    }
53  } else {
54    UMA_HISTOGRAM_COUNTS("DefaultBrowserWarning.SetAsDefault", 1);
55    ShellIntegration::SetAsDefaultBrowser();
56  }
57}
58
59// The delegate for the infobar shown when Chrome is not the default browser.
60class DefaultBrowserInfoBarDelegate : public ConfirmInfoBarDelegate {
61 public:
62  // Creates a default browser delegate and adds it to |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  BrowserThread::PostTask(
159      BrowserThread::FILE,
160      FROM_HERE,
161      base::Bind(&SetChromeAsDefaultBrowser, interactive_flow_required_,
162                 prefs_));
163
164  return true;
165}
166
167bool DefaultBrowserInfoBarDelegate::Cancel() {
168  action_taken_ = true;
169  UMA_HISTOGRAM_COUNTS("DefaultBrowserWarning.DontSetAsDefault", 1);
170  // User clicked "Don't ask me again", remember that.
171  prefs_->SetBoolean(prefs::kCheckDefaultBrowser, false);
172  return true;
173}
174
175bool DefaultBrowserInfoBarDelegate::ShouldExpireInternal(
176    const content::LoadCommittedDetails& details) const {
177  return should_expire_;
178}
179
180void NotifyNotDefaultBrowserCallback(chrome::HostDesktopType desktop_type) {
181  Browser* browser = chrome::FindLastActiveWithHostDesktopType(desktop_type);
182  if (!browser)
183    return;  // Reached during ui tests.
184
185  // In ChromeBot tests, there might be a race. This line appears to get
186  // called during shutdown and |tab| can be NULL.
187  content::WebContents* web_contents =
188      browser->tab_strip_model()->GetActiveWebContents();
189  if (!web_contents)
190    return;
191
192  bool interactive_flow = ShellIntegration::CanSetAsDefaultBrowser() ==
193      ShellIntegration::SET_DEFAULT_INTERACTIVE;
194  Profile* profile =
195      Profile::FromBrowserContext(web_contents->GetBrowserContext());
196  DefaultBrowserInfoBarDelegate::Create(
197      InfoBarService::FromWebContents(web_contents), profile->GetPrefs(),
198      interactive_flow);
199}
200
201void CheckDefaultBrowserCallback(chrome::HostDesktopType desktop_type) {
202  if (ShellIntegration::GetDefaultBrowser() == ShellIntegration::NOT_DEFAULT) {
203    ShellIntegration::DefaultWebClientSetPermission default_change_mode =
204        ShellIntegration::CanSetAsDefaultBrowser();
205
206    if (default_change_mode != ShellIntegration::SET_DEFAULT_NOT_ALLOWED) {
207      BrowserThread::PostTask(BrowserThread::UI, FROM_HERE,
208          base::Bind(&NotifyNotDefaultBrowserCallback, desktop_type));
209    }
210  }
211}
212
213}  // namespace
214
215namespace chrome {
216
217void RegisterDefaultBrowserPromptPrefs(PrefRegistrySimple* registry) {
218  registry->RegisterStringPref(
219      prefs::kBrowserSuppressDefaultBrowserPrompt, std::string());
220}
221
222void ShowDefaultBrowserPrompt(Profile* profile, HostDesktopType desktop_type) {
223  // We do not check if we are the default browser if:
224  // - The user said "don't ask me again" on the infobar earlier.
225  // - There is a policy in control of this setting.
226  // - The "suppress_default_browser_prompt_for_version" master preference is
227  //     set to the current version.
228  if (!profile->GetPrefs()->GetBoolean(prefs::kCheckDefaultBrowser))
229    return;
230
231  if (g_browser_process->local_state()->IsManagedPreference(
232      prefs::kDefaultBrowserSettingEnabled)) {
233    if (g_browser_process->local_state()->GetBoolean(
234        prefs::kDefaultBrowserSettingEnabled)) {
235      BrowserThread::PostTask(
236          BrowserThread::FILE, FROM_HERE,
237          base::Bind(
238              base::IgnoreResult(&ShellIntegration::SetAsDefaultBrowser)));
239    } else {
240      // TODO(pastarmovj): We can't really do anything meaningful here yet but
241      // just prevent showing the infobar.
242    }
243    return;
244  }
245
246  const std::string disable_version_string =
247      g_browser_process->local_state()->GetString(
248          prefs::kBrowserSuppressDefaultBrowserPrompt);
249  const Version disable_version(disable_version_string);
250
251  DCHECK(disable_version_string.empty() || disable_version.IsValid());
252  if (disable_version.IsValid()) {
253    const chrome::VersionInfo version_info;
254    const Version chrome_version(version_info.Version());
255    if (disable_version.Equals(chrome_version))
256      return;
257  }
258
259  BrowserThread::PostTask(BrowserThread::FILE, FROM_HERE,
260                          base::Bind(&CheckDefaultBrowserCallback,
261                                     desktop_type));
262
263}
264
265#if !defined(OS_WIN)
266bool ShowFirstRunDefaultBrowserPrompt(Profile* profile) {
267  return false;
268}
269#endif
270
271}  // namespace chrome
272