gecko-dev/dom/indexedDB/IDBEvents.h

/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* 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 mozilla_dom_idbevents_h__
#define mozilla_dom_idbevents_h__

#include "js/RootingAPI.h"
#include "mozilla/dom/BindingDeclarations.h"
#include "mozilla/dom/Event.h"
#include "mozilla/dom/Nullable.h"
#include "nsStringFwd.h"

#define IDBVERSIONCHANGEEVENT_IID                    \
  {                                                  \
    0x3b65d4c3, 0x73ad, 0x492e, {                    \
      0xb1, 0x2d, 0x15, 0xf9, 0xda, 0xc2, 0x08, 0x4b \
    }                                                \
  }

namespace mozilla {

class ErrorResult;

namespace dom {

class EventTarget;
class GlobalObject;
struct IDBVersionChangeEventInit;

namespace indexedDB {

enum Bubbles { eDoesNotBubble, eDoesBubble };

enum Cancelable { eNotCancelable, eCancelable };

extern const char16_t* kAbortEventType;
extern const char16_t* kBlockedEventType;
extern const char16_t* kCompleteEventType;
extern const char16_t* kErrorEventType;
extern const char16_t* kSuccessEventType;
extern const char16_t* kUpgradeNeededEventType;
extern const char16_t* kVersionChangeEventType;
extern const char16_t* kCloseEventType;

already_AddRefed<Event> CreateGenericEvent(EventTarget* aOwner,
                                           const nsDependentString& aType,
                                           Bubbles aBubbles,
                                           Cancelable aCancelable);

}  // namespace indexedDB

class IDBVersionChangeEvent final : public Event {
  uint64_t mOldVersion;
  Nullable<uint64_t> mNewVersion;

 public:
  static already_AddRefed<IDBVersionChangeEvent> Create(
      EventTarget* aOwner, const nsDependentString& aName, uint64_t aOldVersion,
      uint64_t aNewVersion) {
    Nullable<uint64_t> newVersion(aNewVersion);
    return CreateInternal(aOwner, aName, aOldVersion, newVersion);
  }

  static already_AddRefed<IDBVersionChangeEvent> Create(
      EventTarget* aOwner, const nsDependentString& aName,
      uint64_t aOldVersion) {
    Nullable<uint64_t> newVersion(0);
    newVersion.SetNull();
    return CreateInternal(aOwner, aName, aOldVersion, newVersion);
  }

  static already_AddRefed<IDBVersionChangeEvent> Constructor(
      const GlobalObject& aGlobal, const nsAString& aType,
      const IDBVersionChangeEventInit& aOptions, ErrorResult& aRv);

  uint64_t OldVersion() const { return mOldVersion; }

  Nullable<uint64_t> GetNewVersion() const { return mNewVersion; }

  NS_DECLARE_STATIC_IID_ACCESSOR(IDBVERSIONCHANGEEVENT_IID)

  NS_DECL_ISUPPORTS_INHERITED

  virtual JSObject* WrapObjectInternal(
      JSContext* aCx, JS::Handle<JSObject*> aGivenProto) override;

 private:
  IDBVersionChangeEvent(EventTarget* aOwner, uint64_t aOldVersion)
      : Event(aOwner, nullptr, nullptr), mOldVersion(aOldVersion) {}

  ~IDBVersionChangeEvent() {}

  static already_AddRefed<IDBVersionChangeEvent> CreateInternal(
      EventTarget* aOwner, const nsAString& aName, uint64_t aOldVersion,
      const Nullable<uint64_t>& aNewVersion);
};

NS_DEFINE_STATIC_IID_ACCESSOR(IDBVersionChangeEvent, IDBVERSIONCHANGEEVENT_IID)

}  // namespace dom
}  // namespace mozilla

#endif  // mozilla_dom_idbevents_h__