content/public/browser/interstitial_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 CONTENT_PUBLIC_BROWSER_INTERSTITIAL_PAGE_H_
   6 #define CONTENT_PUBLIC_BROWSER_INTERSTITIAL_PAGE_H_
   7
   8 #include "content/common/content_export.h"
   9
  10 class GURL;
  11
  12 namespace gfx {
  13 class Size;
  14 }
  15
  16 namespace content {
  17
  18 class InterstitialPageDelegate;
  19 class RenderViewHost;
  20 class WebContents;
  21
  22 // This class is used for showing interstitial pages, pages that show some
  23 // informative message asking for user validation before reaching the target
  24 // page. (Navigating to a page served over bad HTTPS or a page containing
  25 // malware are typical cases where an interstitial is required.)
  26 //
  27 // If specified in the Create function, this class creates a navigation entry so
  28 // that when the interstitial shows, the current entry is the target URL.
  29 //
  30 // InterstitialPage instances take care of deleting themselves when closed
  31 // through a navigation, the WebContents closing them or the tab containing them
  32 // being closed.
  33
  34 class InterstitialPage {
  35  public:
  36   // Creates an interstitial page to show in |web_contents|. |new_navigation|
  37   // should be set to true when the interstitial is caused by loading a new
  38   // page, in which case a temporary navigation entry is created with the URL
  39   // |url| and added to the navigation controller (so the interstitial page
  40   // appears as a new navigation entry). |new_navigation| should be false when
  41   // the interstitial was triggered by a loading a sub-resource in a page. Takes
  42   // ownership of |delegate|.
  43   //
  44   // Reloading the interstitial page will result in a new navigation to |url|.
  45   CONTENT_EXPORT static InterstitialPage* Create(
  46       WebContents* web_contents,
  47       bool new_navigation,
  48       const GURL& url,
  49       InterstitialPageDelegate* delegate);
  50
  51   // Retrieves the InterstitialPage if any associated with the specified
  52   // |web_contents|.
  53   CONTENT_EXPORT static InterstitialPage* GetInterstitialPage(
  54       WebContents* web_contents);
  55
  56   virtual ~InterstitialPage() {}
  57
  58   // Shows the interstitial page in the tab.
  59   virtual void Show() = 0;
  60
  61   // Hides the interstitial page.
  62   virtual void Hide() = 0;
  63
  64   // Reverts to the page showing before the interstitial.
  65   // Delegates should call this method when the user has chosen NOT to proceed
  66   // to the target URL.
  67   // Warning: if |new_navigation| was set to true in the constructor, 'this'
  68   //          will be deleted when this method returns.
  69   virtual void DontProceed() = 0;
  70
  71   // Delegates should call this method when the user has chosen to proceed to
  72   // the target URL.
  73   // Warning: 'this' has been deleted when this method returns.
  74   virtual void Proceed() = 0;
  75
  76   // Sizes the RenderViewHost showing the actual interstitial page contents.
  77   virtual void SetSize(const gfx::Size& size) = 0;
  78
  79   // Sets the focus to the interstitial.
  80   virtual void Focus() = 0;
  81
  82   virtual RenderViewHost* GetRenderViewHostForTesting() const = 0;
  83   virtual InterstitialPageDelegate* GetDelegateForTesting() = 0;
  84   virtual void DontCreateViewForTesting() = 0;
  85 };
  86
  87 }  // namespace content
  88
  89 #endif  // CONTENT_PUBLIC_BROWSER_INTERSTITIAL_PAGE_H_