dom/quota/QuotaRequests.h

   1 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
   2 /* vim: set ts=8 sts=2 et sw=2 tw=80: */
   3 /* This Source Code Form is subject to the terms of the Mozilla Public
   4  * License, v. 2.0. If a copy of the MPL was not distributed with this
   5  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
   6
   7 #ifndef mozilla_dom_quota_UsageRequest_h
   8 #define mozilla_dom_quota_UsageRequest_h
   9
  10 #include <cstdint>
  11 #include "ErrorList.h"
  12 #include "mozilla/Assertions.h"
  13 #include "nsCOMPtr.h"
  14 #include "nsCycleCollectionParticipant.h"
  15 #include "nsIPrincipal.h"
  16 #include "nsIQuotaRequests.h"
  17 #include "nsISupports.h"
  18
  19 class nsIQuotaCallback;
  20 class nsIQuotaUsageCallback;
  21 class nsIVariant;
  22
  23 namespace mozilla::dom::quota {
  24
  25 class QuotaUsageRequestChild;
  26
  27 class RequestBase : public nsIQuotaRequestBase {
  28  protected:
  29   nsCOMPtr<nsIPrincipal> mPrincipal;
  30
  31   nsresult mResultCode;
  32   bool mHaveResultOrErrorCode;
  33
  34  public:
  35   void AssertIsOnOwningThread() const
  36 #ifdef DEBUG
  37       ;
  38 #else
  39   {
  40   }
  41 #endif
  42
  43   void SetError(nsresult aRv);
  44
  45   NS_DECL_CYCLE_COLLECTING_ISUPPORTS
  46   NS_DECL_NSIQUOTAREQUESTBASE
  47   NS_DECL_CYCLE_COLLECTION_CLASS(RequestBase)
  48
  49  protected:
  50   RequestBase();
  51
  52   RequestBase(nsIPrincipal* aPrincipal);
  53
  54   virtual ~RequestBase() { AssertIsOnOwningThread(); }
  55
  56   virtual void FireCallback() = 0;
  57 };
  58
  59 class UsageRequest final : public RequestBase, public nsIQuotaUsageRequest {
  60   nsCOMPtr<nsIQuotaUsageCallback> mCallback;
  61
  62   nsCOMPtr<nsIVariant> mResult;
  63
  64   QuotaUsageRequestChild* mBackgroundActor;
  65
  66   bool mCanceled;
  67
  68  public:
  69   explicit UsageRequest(nsIQuotaUsageCallback* aCallback);
  70
  71   UsageRequest(nsIPrincipal* aPrincipal, nsIQuotaUsageCallback* aCallback);
  72
  73   void SetBackgroundActor(QuotaUsageRequestChild* aBackgroundActor);
  74
  75   void ClearBackgroundActor() {
  76     AssertIsOnOwningThread();
  77
  78     mBackgroundActor = nullptr;
  79   }
  80
  81   void SetResult(nsIVariant* aResult);
  82
  83   NS_DECL_ISUPPORTS_INHERITED
  84   NS_FORWARD_NSIQUOTAREQUESTBASE(RequestBase::)
  85   NS_DECL_NSIQUOTAUSAGEREQUEST
  86   NS_DECL_CYCLE_COLLECTION_CLASS_INHERITED(UsageRequest, RequestBase)
  87
  88  private:
  89   ~UsageRequest();
  90
  91   virtual void FireCallback() override;
  92 };
  93
  94 class Request final : public RequestBase, public nsIQuotaRequest {
  95   nsCOMPtr<nsIQuotaCallback> mCallback;
  96
  97   nsCOMPtr<nsIVariant> mResult;
  98
  99  public:
 100   Request();
 101
 102   explicit Request(nsIPrincipal* aPrincipal);
 103
 104   explicit Request(nsIQuotaCallback* aCallback);
 105
 106   void SetResult(nsIVariant* aResult);
 107
 108   NS_DECL_ISUPPORTS_INHERITED
 109   NS_FORWARD_NSIQUOTAREQUESTBASE(RequestBase::)
 110   NS_DECL_NSIQUOTAREQUEST
 111   NS_DECL_CYCLE_COLLECTION_CLASS_INHERITED(Request, RequestBase)
 112
 113  private:
 114   ~Request();
 115
 116   virtual void FireCallback() override;
 117 };
 118
 119 }  // namespace mozilla::dom::quota
 120
 121 #endif  // mozilla_dom_quota_UsageRequest_h