content/browser/permissions/permission_service_impl.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 CONTENT_BROWSER_PERMISSIONS_PERMISSION_SERVICE_IMPL_H_
   6 #define CONTENT_BROWSER_PERMISSIONS_PERMISSION_SERVICE_IMPL_H_
   7
   8 #include "base/id_map.h"
   9 #include "base/macros.h"
  10 #include "base/memory/weak_ptr.h"
  11 #include "content/browser/permissions/permission_service_context.h"
  12 #include "content/common/permission_service.mojom.h"
  13
  14 namespace content {
  15
  16 enum class PermissionType;
  17
  18 // Implements the PermissionService Mojo interface.
  19 // This service can be created from a RenderFrameHost or a RenderProcessHost.
  20 // It is owned by a PermissionServiceContext.
  21 // It receives at PermissionServiceContext instance when created which allows it
  22 // to have some information about the current context. That enables the service
  23 // to know whether it can show UI and have knowledge of the associated
  24 // WebContents for example.
  25 class PermissionServiceImpl : public mojo::InterfaceImpl<PermissionService> {
  26  public:
  27   ~PermissionServiceImpl() override;
  28
  29   // Clear pending operations currently run by the service. This will be called
  30   // by PermissionServiceContext when it will need the service to clear its
  31   // state for example, if the frame changes.
  32   void CancelPendingOperations();
  33
  34  protected:
  35   friend PermissionServiceContext;
  36
  37   PermissionServiceImpl(PermissionServiceContext* context);
  38
  39  private:
  40   using PermissionStatusCallback = mojo::Callback<void(PermissionStatus)>;
  41
  42   struct PendingRequest {
  43     PendingRequest(PermissionType permission, const GURL& origin,
  44                    const PermissionStatusCallback& callback);
  45     ~PendingRequest();
  46
  47     PermissionType permission;
  48     GURL origin;
  49     PermissionStatusCallback callback;
  50   };
  51   using RequestsMap = IDMap<PendingRequest, IDMapOwnPointer>;
  52
  53   struct PendingSubscription {
  54     PendingSubscription(PermissionType permission, const GURL& origin,
  55                         const PermissionStatusCallback& callback);
  56     ~PendingSubscription();
  57
  58     // Subscription ID received from the PermissionManager.
  59     int id;
  60     PermissionType permission;
  61     GURL origin;
  62     PermissionStatusCallback callback;
  63   };
  64   using SubscriptionsMap = IDMap<PendingSubscription, IDMapOwnPointer>;
  65
  66   // PermissionService.
  67   void HasPermission(PermissionName permission,
  68                      const mojo::String& origin,
  69                      const PermissionStatusCallback& callback) override;
  70   void RequestPermission(PermissionName permission,
  71                          const mojo::String& origin,
  72                          bool user_gesture,
  73                          const PermissionStatusCallback& callback) override;
  74   void RevokePermission(PermissionName permission,
  75                         const mojo::String& origin,
  76                         const PermissionStatusCallback& callback) override;
  77   void GetNextPermissionChange(
  78       PermissionName permission,
  79       const mojo::String& origin,
  80       PermissionStatus last_known_status,
  81       const PermissionStatusCallback& callback) override;
  82
  83   // mojo::InterfaceImpl.
  84   void OnConnectionError() override;
  85
  86   void OnRequestPermissionResponse(int request_id, PermissionStatus status);
  87
  88   PermissionStatus GetPermissionStatusFromName(PermissionName permission,
  89                                                const GURL& origin);
  90   PermissionStatus GetPermissionStatusFromType(PermissionType type,
  91                                                const GURL& origin);
  92   void ResetPermissionStatus(PermissionType type, const GURL& origin);
  93
  94   void OnPermissionStatusChanged(int pending_subscription_id,
  95                                  PermissionStatus status);
  96
  97   RequestsMap pending_requests_;
  98   SubscriptionsMap pending_subscriptions_;
  99   // context_ owns |this|.
 100   PermissionServiceContext* context_;
 101   base::WeakPtrFactory<PermissionServiceImpl> weak_factory_;
 102
 103   DISALLOW_COPY_AND_ASSIGN(PermissionServiceImpl);
 104 };
 105
 106 }  // namespace content
 107
 108 #endif  // CONTENT_BROWSER_PERMISSIONS_PERMISSION_SERVICE_IMPL_H_