chrome/browser/chromeos/offline/offline_load_page.h

   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 #ifndef CHROME_BROWSER_CHROMEOS_OFFLINE_OFFLINE_LOAD_PAGE_H_
   6 #define CHROME_BROWSER_CHROMEOS_OFFLINE_OFFLINE_LOAD_PAGE_H_
   7
   8 #include <string>
   9
  10 #include "base/callback.h"
  11 #include "base/compiler_specific.h"
  12 #include "content/public/browser/interstitial_page_delegate.h"
  13 #include "net/base/network_change_notifier.h"
  14 #include "url/gurl.h"
  15
  16 namespace base {
  17 class DictionaryValue;
  18 }
  19
  20 namespace content {
  21 class InterstitialPage;
  22 class WebContents;
  23 }
  24
  25 namespace extensions {
  26 class Extension;
  27 }
  28
  29 namespace chromeos {
  30
  31 // OfflineLoadPage class shows the interstitial page that is shown
  32 // when no network is available and hides when some network (either
  33 // one of wifi, 3g or ethernet) becomes available.
  34 // It deletes itself when the interstitial page is closed.
  35 class OfflineLoadPage
  36     : public content::InterstitialPageDelegate,
  37       public net::NetworkChangeNotifier::ConnectionTypeObserver {
  38  public:
  39   // Passed a boolean indicating whether or not it is OK to proceed with the
  40   // page load.
  41   typedef base::Callback<void(bool /*proceed*/)> CompletionCallback;
  42
  43   // Create a offline load page for the |web_contents|.  The callback will be
  44   // run on the IO thread.
  45   OfflineLoadPage(content::WebContents* web_contents, const GURL& url,
  46                   const CompletionCallback& callback);
  47
  48   void Show();
  49
  50  protected:
  51   ~OfflineLoadPage() override;
  52
  53   // Overridden by tests.
  54   virtual void NotifyBlockingPageComplete(bool proceed);
  55
  56  private:
  57   friend class TestOfflineLoadPage;
  58
  59   // InterstitialPageDelegate implementation.
  60   std::string GetHTMLContents() override;
  61   void CommandReceived(const std::string& command) override;
  62   void OverrideRendererPrefs(content::RendererPreferences* prefs) override;
  63   void OnProceed() override;
  64   void OnDontProceed() override;
  65
  66   // net::NetworkChangeNotifier::ConnectionTypeObserver overrides.
  67   void OnConnectionTypeChanged(
  68       net::NetworkChangeNotifier::ConnectionType type) override;
  69
  70   CompletionCallback callback_;
  71
  72   // True if the proceed is chosen.
  73   bool proceeded_;
  74
  75   content::WebContents* web_contents_;
  76   GURL url_;
  77   content::InterstitialPage* interstitial_page_;  // Owns us.
  78
  79   DISALLOW_COPY_AND_ASSIGN(OfflineLoadPage);
  80 };
  81
  82 }  // namespace chromeos
  83
  84 #endif  // CHROME_BROWSER_CHROMEOS_OFFLINE_OFFLINE_LOAD_PAGE_H_