chrome/browser/ui/website_settings/permission_bubble_manager.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_UI_WEBSITE_SETTINGS_PERMISSION_BUBBLE_MANAGER_H_
   6 #define CHROME_BROWSER_UI_WEBSITE_SETTINGS_PERMISSION_BUBBLE_MANAGER_H_
   7
   8 #include <vector>
   9
  10 #include "base/memory/weak_ptr.h"
  11 #include "chrome/browser/ui/website_settings/permission_bubble_view.h"
  12 #include "content/public/browser/web_contents_observer.h"
  13 #include "content/public/browser/web_contents_user_data.h"
  14
  15 class PermissionBubbleRequest;
  16
  17 // Provides access to permissions bubbles. Allows clients to add a request
  18 // callback interface to the existing permission bubble configuration.
  19 // Depending on the situation and policy, that may add new UI to an existing
  20 // permission bubble, create and show a new permission bubble, or provide no
  21 // visible UI action at all. (In that case, the request will be immediately
  22 // informed that the permission request failed.)
  23 //
  24 // A PermissionBubbleManager is associated with a particular WebContents.
  25 // Requests attached to a particular WebContents' PBM must outlive it.
  26 //
  27 // The PermissionBubbleManager should be addressed on the UI thread.
  28 class PermissionBubbleManager
  29     : public content::WebContentsObserver,
  30       public content::WebContentsUserData<PermissionBubbleManager>,
  31       public PermissionBubbleView::Delegate {
  32  public:
  33   // Return the flag-driven enabled state of permissions bubbles.
  34   static bool Enabled();
  35
  36   virtual ~PermissionBubbleManager();
  37
  38   // Adds a new request to the permission bubble. Ownership of the request
  39   // remains with the caller. The caller must arrange for the request to
  40   // outlive the PermissionBubbleManager. If a bubble is visible when this
  41   // call is made, the request will be queued up and shown after the current
  42   // bubble closes. A request with message text identical to an outstanding
  43   // request will receive a RequestFinished call immediately and not be added.
  44   virtual void AddRequest(PermissionBubbleRequest* request);
  45
  46   // Cancels an outstanding request. This may have different effects depending
  47   // on what is going on with the bubble. If the request is pending, it will be
  48   // removed and never shown. If the request is showing, it will continue to be
  49   // shown, but the user's action won't be reported back to the request object.
  50   // In some circumstances, we can remove the request from the bubble, and may
  51   // do so. The request will have RequestFinished executed on it if it is found,
  52   // at which time the caller is free to delete the request.
  53   virtual void CancelRequest(PermissionBubbleRequest* request);
  54
  55   // Sets the active view for the permission bubble. If this is NULL, it
  56   // means any existing permission bubble can no longer be shown. Does not
  57   // take ownership of the view.
  58   virtual void SetView(PermissionBubbleView* view) OVERRIDE;
  59
  60  private:
  61   friend class PermissionBubbleManagerTest;
  62   friend class DownloadRequestLimiterTest;
  63   friend class content::WebContentsUserData<PermissionBubbleManager>;
  64
  65   explicit PermissionBubbleManager(content::WebContents* web_contents);
  66
  67   // WebContentsObserver:
  68   virtual void DocumentOnLoadCompletedInMainFrame() OVERRIDE;
  69   virtual void DocumentLoadedInFrame(
  70       content::RenderFrameHost* render_frame_host) OVERRIDE;
  71
  72   // If a page on which permissions requests are pending is navigated,
  73   // they will be finalized as if canceled by the user.
  74   virtual void NavigationEntryCommitted(
  75       const content::LoadCommittedDetails& details) OVERRIDE;
  76   virtual void WebContentsDestroyed() OVERRIDE;
  77
  78   // PermissionBubbleView::Delegate:
  79   virtual void ToggleAccept(int request_index, bool new_value) OVERRIDE;
  80   virtual void SetCustomizationMode() OVERRIDE;
  81   virtual void Accept() OVERRIDE;
  82   virtual void Deny() OVERRIDE;
  83   virtual void Closing() OVERRIDE;
  84
  85   // Posts a task which will allow the bubble to become visible if it is needed.
  86   void ScheduleShowBubble();
  87
  88   // Shows the bubble if it is not already visible and there are pending
  89   // requests.
  90   void TriggerShowBubble();
  91
  92   // Finalize the pending permissions request.
  93   void FinalizeBubble();
  94
  95   // Cancel any pending requests. This is called if the WebContents
  96   // on which permissions calls are pending is destroyed or navigated away
  97   // from the requesting page.
  98   void CancelPendingQueues();
  99
 100   // Returns whether or not |request| has already been added to |queue|.
 101   // |same_object| must be non-null.  It will be set to true if |request|
 102   // is the same object as an existing request in |queue|, false otherwise.
 103   bool ExistingRequest(PermissionBubbleRequest* request,
 104                        const std::vector<PermissionBubbleRequest*>& queue,
 105                        bool* same_object);
 106
 107   // Returns true if |queue| contains a request which was generated by a user
 108   // gesture.  Returns false otherwise.
 109   bool HasUserGestureRequest(
 110       const std::vector<PermissionBubbleRequest*>& queue);
 111
 112   // Whether or not we are showing the bubble in this tab.
 113   bool bubble_showing_;
 114
 115   // Set to the UI surface to be used to display the permissions requests.
 116   PermissionBubbleView* view_;
 117
 118   std::vector<PermissionBubbleRequest*> requests_;
 119   std::vector<PermissionBubbleRequest*> queued_requests_;
 120   std::vector<PermissionBubbleRequest*> queued_frame_requests_;
 121
 122   // URL of the main frame in the WebContents to which this manager is attached.
 123   // TODO(gbillock): if there are iframes in the page, we need to deal with it.
 124   GURL request_url_;
 125   bool request_url_has_loaded_;
 126
 127   std::vector<bool> accept_states_;
 128   bool customization_mode_;
 129
 130   base::WeakPtrFactory<PermissionBubbleManager> weak_factory_;
 131 };
 132
 133 #endif  // CHROME_BROWSER_UI_WEBSITE_SETTINGS_PERMISSION_BUBBLE_MANAGER_H_