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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

#ifndef nsOfflineCacheUpdateGlue_h
#define nsOfflineCacheUpdateGlue_h

#include "nsIOfflineCacheUpdate.h"

#include "nsCOMPtr.h"
#include "nsAutoPtr.h"
#include "nsString.h"
#include "nsWeakReference.h"
#include "mozilla/Attributes.h"

class nsOfflineCacheUpdate;

namespace mozilla {
namespace dom {
class Document;
}

namespace docshell {

// Like FORWARD_SAFE except methods:
//    Schedule
//    Init
#define NS_ADJUSTED_FORWARD_NSIOFFLINECACHEUPDATE(_to)                         \
  NS_IMETHOD GetStatus(uint16_t* aStatus) override {                           \
    return !_to ? NS_ERROR_NULL_POINTER : _to->GetStatus(aStatus);             \
  }                                                                            \
  NS_IMETHOD GetPartial(bool* aPartial) override {                             \
    return !_to ? NS_ERROR_NULL_POINTER : _to->GetPartial(aPartial);           \
  }                                                                            \
  NS_IMETHOD GetIsUpgrade(bool* aIsUpgrade) override {                         \
    return !_to ? NS_ERROR_NULL_POINTER : _to->GetIsUpgrade(aIsUpgrade);       \
  }                                                                            \
  NS_IMETHOD GetUpdateDomain(nsACString& aUpdateDomain) override {             \
    return !_to ? NS_ERROR_NULL_POINTER : _to->GetUpdateDomain(aUpdateDomain); \
  }                                                                            \
  NS_IMETHOD GetLoadingPrincipal(nsIPrincipal** aLoadingPrincipal) override {  \
    return !_to ? NS_ERROR_NULL_POINTER                                        \
                : _to->GetLoadingPrincipal(aLoadingPrincipal);                 \
  }                                                                            \
  NS_IMETHOD GetManifestURI(nsIURI** aManifestURI) override {                  \
    return !_to ? NS_ERROR_NULL_POINTER : _to->GetManifestURI(aManifestURI);   \
  }                                                                            \
  NS_IMETHOD GetSucceeded(bool* aSucceeded) override {                         \
    return !_to ? NS_ERROR_NULL_POINTER : _to->GetSucceeded(aSucceeded);       \
  }                                                                            \
  NS_IMETHOD InitPartial(nsIURI* aManifestURI, const nsACString& aClientID,    \
                         nsIURI* aDocumentURI,                                 \
                         nsIPrincipal* aLoadingPrincipal,                      \
                         nsICookieSettings* aCookieSettings) override {        \
    return !_to ? NS_ERROR_NULL_POINTER                                        \
                : _to->InitPartial(aManifestURI, aClientID, aDocumentURI,      \
                                   aLoadingPrincipal, aCookieSettings);        \
  }                                                                            \
  NS_IMETHOD InitForUpdateCheck(nsIURI* aManifestURI,                          \
                                nsIPrincipal* aLoadingPrincipal,               \
                                nsIObserver* aObserver) override {             \
    return !_to ? NS_ERROR_NULL_POINTER                                        \
                : _to->InitForUpdateCheck(aManifestURI, aLoadingPrincipal,     \
                                          aObserver);                          \
  }                                                                            \
  NS_IMETHOD AddDynamicURI(nsIURI* aURI) override {                            \
    return !_to ? NS_ERROR_NULL_POINTER : _to->AddDynamicURI(aURI);            \
  }                                                                            \
  NS_IMETHOD AddObserver(nsIOfflineCacheUpdateObserver* aObserver,             \
                         bool aHoldWeak) override {                            \
    return !_to ? NS_ERROR_NULL_POINTER                                        \
                : _to->AddObserver(aObserver, aHoldWeak);                      \
  }                                                                            \
  NS_IMETHOD RemoveObserver(nsIOfflineCacheUpdateObserver* aObserver)          \
      override {                                                               \
    return !_to ? NS_ERROR_NULL_POINTER : _to->RemoveObserver(aObserver);      \
  }                                                                            \
  NS_IMETHOD GetByteProgress(uint64_t* _result) override {                     \
    return !_to ? NS_ERROR_NULL_POINTER : _to->GetByteProgress(_result);       \
  }                                                                            \
  NS_IMETHOD Cancel() override {                                               \
    return !_to ? NS_ERROR_NULL_POINTER : _to->Cancel();                       \
  }

class OfflineCacheUpdateGlue final : public nsSupportsWeakReference,
                                     public nsIOfflineCacheUpdate,
                                     public nsIOfflineCacheUpdateObserver {
 public:
  NS_DECL_ISUPPORTS

 private:
  nsIOfflineCacheUpdate* EnsureUpdate();

 public:
  NS_ADJUSTED_FORWARD_NSIOFFLINECACHEUPDATE(EnsureUpdate())
  NS_IMETHOD Schedule(void) override;
  NS_IMETHOD Init(nsIURI* aManifestURI, nsIURI* aDocumentURI,
                  nsIPrincipal* aLoadingPrincipal,
                  mozilla::dom::Document* aDocument,
                  nsIFile* aCustomProfileDir) override;

  NS_DECL_NSIOFFLINECACHEUPDATEOBSERVER

  OfflineCacheUpdateGlue();

  void SetDocument(mozilla::dom::Document* aDocument);

 private:
  ~OfflineCacheUpdateGlue();

  RefPtr<nsOfflineCacheUpdate> mUpdate;
  bool mCoalesced;

  /* Document that requested this update */
  RefPtr<mozilla::dom::Document> mDocument;
  nsCOMPtr<nsIURI> mDocumentURI;
  nsCOMPtr<nsIPrincipal> mLoadingPrincipal;
  nsCOMPtr<nsICookieSettings> mCookieSettings;
};

}  // namespace docshell
}  // namespace mozilla

#endif