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 virtual ~OfflineLoadPage(); 52 53 // Overridden by tests. 54 virtual void NotifyBlockingPageComplete(bool proceed); 55 56 private: 57 friend class TestOfflineLoadPage; 58 59 // InterstitialPageDelegate implementation. 60 virtual std::string GetHTMLContents() OVERRIDE; 61 virtual void CommandReceived(const std::string& command) OVERRIDE; 62 virtual void OverrideRendererPrefs( 63 content::RendererPreferences* prefs) OVERRIDE; 64 virtual void OnProceed() OVERRIDE; 65 virtual void OnDontProceed() OVERRIDE; 66 67 // net::NetworkChangeNotifier::ConnectionTypeObserver overrides. 68 virtual void OnConnectionTypeChanged( 69 net::NetworkChangeNotifier::ConnectionType type) OVERRIDE; 70 71 CompletionCallback callback_; 72 73 // True if the proceed is chosen. 74 bool proceeded_; 75 76 content::WebContents* web_contents_; 77 GURL url_; 78 content::InterstitialPage* interstitial_page_; // Owns us. 79 80 DISALLOW_COPY_AND_ASSIGN(OfflineLoadPage); 81 }; 82 83 } // namespace chromeos 84 85 #endif // CHROME_BROWSER_CHROMEOS_OFFLINE_OFFLINE_LOAD_PAGE_H_ 86