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/prefs/pref_change_registrar.h"
  12 #include "content/public/browser/interstitial_page_delegate.h"
  13 #include "url/gurl.h"
  14
  15 namespace content {
  16 class InterstitialPage;
  17 class WebContents;
  18 }
  19
  20 // Delegate for an interstitial page when a page is blocked for a supervised
  21 // user because it is on a blacklist (in "allow everything" mode) or not on any
  22 // whitelist (in "allow only specified sites" mode).
  23 class SupervisedUserInterstitial : public content::InterstitialPageDelegate {
  24  public:
  25   static void Show(content::WebContents* web_contents,
  26                    const GURL& url,
  27                    const base::Callback<void(bool)>& callback);
  28
  29  private:
  30   SupervisedUserInterstitial(content::WebContents* web_contents,
  31                              const GURL& url,
  32                              const base::Callback<void(bool)>& callback);
  33   virtual ~SupervisedUserInterstitial();
  34
  35   bool Init();
  36
  37   // InterstitialPageDelegate implementation.
  38   virtual std::string GetHTMLContents() OVERRIDE;
  39   virtual void CommandReceived(const std::string& command) OVERRIDE;
  40   virtual void OnProceed() OVERRIDE;
  41   virtual void OnDontProceed() OVERRIDE;
  42
  43   // Returns whether the blocked URL is now allowed. Called initially before the
  44   // interstitial is shown (to catch race conditions), or when the URL filtering
  45   // prefs change.
  46   bool ShouldProceed();
  47
  48   void OnFilteringPrefsChanged();
  49   void DispatchContinueRequest(bool continue_request);
  50
  51   // Owns the interstitial, which owns us.
  52   content::WebContents* web_contents_;
  53
  54   content::InterstitialPage* interstitial_page_;  // Owns us.
  55
  56   PrefChangeRegistrar pref_change_registrar_;
  57
  58   GURL url_;
  59
  60   base::Callback<void(bool)> callback_;
  61
  62   DISALLOW_COPY_AND_ASSIGN(SupervisedUserInterstitial);
  63 };
  64
  65 #endif  // CHROME_BROWSER_SUPERVISED_USER_SUPERVISED_USER_INTERSTITIAL_H_