michael@0: /* -*- Mode: c++; c-basic-offset: 2; indent-tabs-mode: nil; tab-width: 40 -*- */
michael@0: /* vim: set ts=2 et sw=2 tw=80: */
michael@0: /* This Source Code Form is subject to the terms of the Mozilla Public
michael@0:  * License, v. 2.0. If a copy of the MPL was not distributed with this file,
michael@0:  * You can obtain one at http://mozilla.org/MPL/2.0/. */
michael@0: 
michael@0: #ifndef mozilla_dom_PromiseCallback_h
michael@0: #define mozilla_dom_PromiseCallback_h
michael@0: 
michael@0: #include "mozilla/dom/Promise.h"
michael@0: #include "nsCycleCollectionParticipant.h"
michael@0: 
michael@0: namespace mozilla {
michael@0: namespace dom {
michael@0: 
michael@0: // This is the base class for any PromiseCallback.
michael@0: // It's a logical step in the promise chain of callbacks.
michael@0: class PromiseCallback : public nsISupports
michael@0: {
michael@0: public:
michael@0:   NS_DECL_CYCLE_COLLECTING_ISUPPORTS
michael@0:   NS_DECL_CYCLE_COLLECTION_CLASS(PromiseCallback)
michael@0: 
michael@0:   PromiseCallback();
michael@0:   virtual ~PromiseCallback();
michael@0: 
michael@0:   virtual void Call(JS::Handle<JS::Value> aValue) = 0;
michael@0: 
michael@0:   enum Task {
michael@0:     Resolve,
michael@0:     Reject
michael@0:   };
michael@0: 
michael@0:   // This factory returns a PromiseCallback object with refcount of 0.
michael@0:   static PromiseCallback*
michael@0:   Factory(Promise* aNextPromise, JS::Handle<JSObject*> aObject,
michael@0:           AnyCallback* aCallback, Task aTask);
michael@0: };
michael@0: 
michael@0: // WrapperPromiseCallback execs a JS Callback with a value, and then the return
michael@0: // value is sent to the aNextPromise->ResolveFunction() or to
michael@0: // aNextPromise->RejectFunction() if the JS Callback throws.
michael@0: class WrapperPromiseCallback MOZ_FINAL : public PromiseCallback
michael@0: {
michael@0: public:
michael@0:   NS_DECL_ISUPPORTS_INHERITED
michael@0:   NS_DECL_CYCLE_COLLECTION_SCRIPT_HOLDER_CLASS_INHERITED(WrapperPromiseCallback,
michael@0:                                                          PromiseCallback)
michael@0: 
michael@0:   void Call(JS::Handle<JS::Value> aValue) MOZ_OVERRIDE;
michael@0: 
michael@0:   WrapperPromiseCallback(Promise* aNextPromise, JS::Handle<JSObject*> aGlobal,
michael@0:                          AnyCallback* aCallback);
michael@0:   ~WrapperPromiseCallback();
michael@0: 
michael@0: private:
michael@0:   nsRefPtr<Promise> mNextPromise;
michael@0:   JS::Heap<JSObject*> mGlobal;
michael@0:   nsRefPtr<AnyCallback> mCallback;
michael@0: };
michael@0: 
michael@0: // ResolvePromiseCallback calls aPromise->ResolveFunction() with the value
michael@0: // received by Call().
michael@0: class ResolvePromiseCallback MOZ_FINAL : public PromiseCallback
michael@0: {
michael@0: public:
michael@0:   NS_DECL_ISUPPORTS_INHERITED
michael@0:   NS_DECL_CYCLE_COLLECTION_SCRIPT_HOLDER_CLASS_INHERITED(ResolvePromiseCallback,
michael@0:                                                          PromiseCallback)
michael@0: 
michael@0:   void Call(JS::Handle<JS::Value> aValue) MOZ_OVERRIDE;
michael@0: 
michael@0:   ResolvePromiseCallback(Promise* aPromise, JS::Handle<JSObject*> aGlobal);
michael@0:   ~ResolvePromiseCallback();
michael@0: 
michael@0: private:
michael@0:   nsRefPtr<Promise> mPromise;
michael@0:   JS::Heap<JSObject*> mGlobal;
michael@0: };
michael@0: 
michael@0: // RejectPromiseCallback calls aPromise->RejectFunction() with the value
michael@0: // received by Call().
michael@0: class RejectPromiseCallback MOZ_FINAL : public PromiseCallback
michael@0: {
michael@0: public:
michael@0:   NS_DECL_ISUPPORTS_INHERITED
michael@0:   NS_DECL_CYCLE_COLLECTION_SCRIPT_HOLDER_CLASS_INHERITED(RejectPromiseCallback,
michael@0:                                                          PromiseCallback)
michael@0: 
michael@0:   void Call(JS::Handle<JS::Value> aValue) MOZ_OVERRIDE;
michael@0: 
michael@0:   RejectPromiseCallback(Promise* aPromise, JS::Handle<JSObject*> aGlobal);
michael@0:   ~RejectPromiseCallback();
michael@0: 
michael@0: private:
michael@0:   nsRefPtr<Promise> mPromise;
michael@0:   JS::Heap<JSObject*> mGlobal;
michael@0: };
michael@0: 
michael@0: // NativePromiseCallback wraps a NativePromiseHandler.
michael@0: class NativePromiseCallback MOZ_FINAL : public PromiseCallback
michael@0: {
michael@0: public:
michael@0:   NS_DECL_ISUPPORTS_INHERITED
michael@0:   NS_DECL_CYCLE_COLLECTION_CLASS_INHERITED(NativePromiseCallback,
michael@0:                                            PromiseCallback)
michael@0: 
michael@0:   void Call(JS::Handle<JS::Value> aValue) MOZ_OVERRIDE;
michael@0: 
michael@0:   NativePromiseCallback(PromiseNativeHandler* aHandler,
michael@0:                         Promise::PromiseState aState);
michael@0:   ~NativePromiseCallback();
michael@0: 
michael@0: private:
michael@0:   nsRefPtr<PromiseNativeHandler> mHandler;
michael@0:   Promise::PromiseState mState;
michael@0: };
michael@0: 
michael@0: } // namespace dom
michael@0: } // namespace mozilla
michael@0: 
michael@0: #endif // mozilla_dom_PromiseCallback_h