chrome/browser/supervised_user/supervised_user_interstitial.h

   1 // Copyright 2014 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_SUPERVISED_USER_SUPERVISED_USER_INTERSTITIAL_H_
   6 #define CHROME_BROWSER_SUPERVISED_USER_SUPERVISED_USER_INTERSTITIAL_H_
   7
   8 #include <string>
   9
  10 #include "base/callback.h"
  11 #include "base/memory/weak_ptr.h"
  12 #include "chrome/browser/supervised_user/supervised_user_service_observer.h"
  13 #include "chrome/browser/supervised_user/supervised_user_url_filter.h"
  14 #include "content/public/browser/interstitial_page_delegate.h"
  15 #include "url/gurl.h"
  16
  17 namespace content {
  18 class InterstitialPage;
  19 class WebContents;
  20 }
  21
  22 class Profile;
  23
  24 // Delegate for an interstitial page when a page is blocked for a supervised
  25 // user because it is on a blacklist (in "allow everything" mode) or not on any
  26 // whitelist (in "allow only specified sites" mode).
  27 class SupervisedUserInterstitial : public content::InterstitialPageDelegate,
  28                                    public SupervisedUserServiceObserver {
  29  public:
  30   // Interstitial type, used for testing.
  31   static content::InterstitialPageDelegate::TypeID kTypeForTesting;
  32
  33   static void Show(content::WebContents* web_contents,
  34                    const GURL& url,
  35                    SupervisedUserURLFilter::FilteringBehaviorReason reason,
  36                    const base::Callback<void(bool)>& callback);
  37
  38  private:
  39   SupervisedUserInterstitial(
  40       content::WebContents* web_contents,
  41       const GURL& url,
  42       SupervisedUserURLFilter::FilteringBehaviorReason reason,
  43       const base::Callback<void(bool)>& callback);
  44   ~SupervisedUserInterstitial() override;
  45
  46   bool Init();
  47
  48   // InterstitialPageDelegate implementation.
  49   std::string GetHTMLContents() override;
  50   void CommandReceived(const std::string& command) override;
  51   void OnProceed() override;
  52   void OnDontProceed() override;
  53   content::InterstitialPageDelegate::TypeID GetTypeForTesting() const override;
  54
  55   // SupervisedUserServiceObserver implementation.
  56   void OnURLFilterChanged() override;
  57   // TODO(treib): Also listen to OnCustodianInfoChanged and update as required.
  58
  59   void OnAccessRequestAdded(bool success);
  60
  61   // Returns whether we should now proceed on a previously-blocked URL.
  62   // Called initially before the interstitial is shown (to catch race
  63   // conditions), or when the URL filtering prefs change. Note that this does
  64   // not include the asynchronous online checks, so if those are enabled, then
  65   // the return value indicates only "allow" or "don't know".
  66   bool ShouldProceed();
  67
  68   void DispatchContinueRequest(bool continue_request);
  69
  70   // Owns the interstitial, which owns us.
  71   content::WebContents* web_contents_;
  72
  73   Profile* profile_;
  74
  75   content::InterstitialPage* interstitial_page_;  // Owns us.
  76
  77   GURL url_;
  78   SupervisedUserURLFilter::FilteringBehaviorReason reason_;
  79
  80   base::Callback<void(bool)> callback_;
  81
  82   base::WeakPtrFactory<SupervisedUserInterstitial> weak_ptr_factory_;
  83
  84   DISALLOW_COPY_AND_ASSIGN(SupervisedUserInterstitial);
  85 };
  86
  87 #endif  // CHROME_BROWSER_SUPERVISED_USER_SUPERVISED_USER_INTERSTITIAL_H_