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