Prototype version of the first-run dialog for Windows 8

chrome/browser/ui/startup/default_browser_prompt_win.cc

+// Copyright (c) 2012 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "chrome/browser/ui/startup/default_browser_prompt.h"
+
+#include "chrome/browser/prefs/pref_service.h"
+#include "chrome/browser/profiles/profile.h"
+#include "chrome/browser/shell_integration.h"
+#include "chrome/browser/ui/browser.h"
+#include "chrome/browser/ui/browser_finder.h"
+#include "chrome/browser/ui/webui/set_as_default_browser_ui.h"
+#include "chrome/common/pref_names.h"
+#include "content/public/browser/browser_thread.h"
+#include "content/public/browser/notification_service.h"
+#include "content/public/browser/notification_types.h"
+
+using content::BrowserThread;
+
+namespace {
+
+// Show the page prompting the user to make Chrome the default browser on
+// Windows 8 (which means becoming "the browser" in Metro mode). The page
+// will be shown at the first appropriate opportunity. It can be placed in
+// a tab or in a dialog, depending on other settings.
+class SetMetroBrowserFlowLauncher : public content::NotificationObserver {
+ public:
+  static void LaunchSoon(Profile* profile) {
+    // The instance will manage its own lifetime.
+    new SetMetroBrowserFlowLauncher(profile);
+  }
+
+ private:
+  explicit SetMetroBrowserFlowLauncher(Profile* profile)
+      : profile_(profile) {
+    registrar_.Add(this, content::NOTIFICATION_LOAD_COMPLETED_MAIN_FRAME,
+                   content::NotificationService::AllSources());
+  }
+
+  // content::NotificationObserver override:
+  virtual void Observe(int type,
+                       const content::NotificationSource& source,
+                       const content::NotificationDetails& details) OVERRIDE;
+
+  content::NotificationRegistrar registrar_;
+  Profile* profile_;
+
+  DISALLOW_COPY_AND_ASSIGN(SetMetroBrowserFlowLauncher);
+};
+
+void SetMetroBrowserFlowLauncher::Observe(
+    int type,
+    const content::NotificationSource& source,
+    const content::NotificationDetails& details) {
+  DCHECK_EQ(type, content::NOTIFICATION_LOAD_COMPLETED_MAIN_FRAME);
+  Browser* browser = browser::FindBrowserWithWebContents(
+      content::Source<content::WebContents>(source).ptr());
+
+  if (!browser || !browser->is_type_tabbed())
+    return;
+
+  // Unregister and delete.
+  registrar_.RemoveAll();
+  bool as_dialog =
+      profile_->GetPrefs()->GetBoolean(prefs::kDefaultBrowserFlowDialog);
+
+  SetAsDefaultBrowserUI::Show(profile_, browser, as_dialog);
+  delete this;
+}
+
+}  // namespace
+
+namespace browser {
+
+void ShowFirstRunDefaultBrowserPrompt(Profile* profile) {
+  if ((ShellIntegration::IsDefaultBrowser() ==
+           ShellIntegration::NOT_DEFAULT_WEB_CLIENT) &&
+      (ShellIntegration::CanSetAsDefaultBrowser() ==
+           ShellIntegration::SET_DEFAULT_INTERACTIVE)) {
+    // If the only available mode of setting the default browser requires
+    // user interaction, it means this couldn't have been done yet.
+    SetMetroBrowserFlowLauncher::LaunchSoon(profile);
+  }
+}
+
+}  // namespace browser