chrome/browser/banners/app_banner_manager.h

   1 // Copyright 2015 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_BANNERS_APP_BANNER_MANAGER_H_
   6 #define CHROME_BROWSER_BANNERS_APP_BANNER_MANAGER_H_
   7
   8 #include "base/memory/ref_counted.h"
   9 #include "base/memory/scoped_ptr.h"
  10 #include "base/memory/weak_ptr.h"
  11 #include "chrome/browser/banners/app_banner_data_fetcher.h"
  12 #include "content/public/browser/web_contents_observer.h"
  13 #include "third_party/WebKit/public/platform/modules/app_banner/WebAppBannerPromptReply.h"
  14
  15 namespace content {
  16 struct FrameNavigateParams;
  17 struct LoadCommittedDetails;
  18 }  // namespace content
  19
  20 namespace banners {
  21 class AppBannerDataFetcher;
  22
  23 /**
  24  * Creates an app banner.
  25  *
  26  * Hooks the wiring together for getting the data for a particular app.
  27  * Monitors at most one app at a time, tracking the info for the most recently
  28  * requested app. Any work in progress for other apps is discarded.
  29  */
  30 class AppBannerManager : public content::WebContentsObserver,
  31                          public AppBannerDataFetcher::Delegate {
  32  public:
  33   static bool IsEnabled();
  34   static void DisableSecureSchemeCheckForTesting();
  35
  36   // Returns whether or not the URLs match for everything except for the ref.
  37   static bool URLsAreForTheSamePage(const GURL& first, const GURL& second);
  38
  39   explicit AppBannerManager(int icon_size);
  40   ~AppBannerManager() override;
  41
  42   // WebContentsObserver overrides.
  43   void DidFinishLoad(content::RenderFrameHost* render_frame_host,
  44                      const GURL& validated_url) override;
  45
  46   // AppBannerDataFetcher::Delegate overrides.
  47   bool OnInvalidManifest(AppBannerDataFetcher* fetcher) override;
  48
  49  protected:
  50   void ReplaceWebContents(content::WebContents* web_contents);
  51
  52   // Creates an AppBannerDataFetcher, which constructs an app banner.
  53   virtual AppBannerDataFetcher* CreateAppBannerDataFetcher(
  54       base::WeakPtr<AppBannerDataFetcher::Delegate> weak_delegate,
  55       const int ideal_icon_size);
  56
  57   // Return whether the AppBannerDataFetcher is active.
  58   bool IsFetcherActive();
  59
  60   scoped_refptr<AppBannerDataFetcher> data_fetcher() { return data_fetcher_; }
  61   int ideal_icon_size() { return ideal_icon_size_; }
  62
  63  private:
  64   // Called after the manager sends a message to the renderer regarding its
  65   // intention to show a prompt. The renderer will send a message back with the
  66   // opportunity to cancel.
  67   void OnBannerPromptReply(content::RenderFrameHost* render_frame_host,
  68                            int request_id,
  69                            blink::WebAppBannerPromptReply reply);
  70
  71   // Cancels an active DataFetcher, stopping its banners from appearing.
  72   void CancelActiveFetcher();
  73
  74   // Ideal icon size to use.
  75   const int ideal_icon_size_;
  76
  77   // Fetches the data required to display a banner for the current page.
  78   scoped_refptr<AppBannerDataFetcher> data_fetcher_;
  79
  80   // A weak pointer is used as the lifetime of the ServiceWorkerContext is
  81   // longer than the lifetime of this banner manager. The banner manager
  82   // might be gone when calls sent to the ServiceWorkerContext are completed.
  83   base::WeakPtrFactory<AppBannerManager> weak_factory_;
  84
  85   DISALLOW_COPY_AND_ASSIGN(AppBannerManager);
  86 };  // class AppBannerManager
  87
  88 }  // namespace banners
  89
  90 #endif  // CHROME_BROWSER_BANNERS_APP_BANNER_MANAGER_H_