1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/dom/promise/PromiseCallback.h Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,122 @@
1.4 +/* -*- Mode: c++; c-basic-offset: 2; indent-tabs-mode: nil; tab-width: 40 -*- */
1.5 +/* vim: set ts=2 et sw=2 tw=80: */
1.6 +/* This Source Code Form is subject to the terms of the Mozilla Public
1.7 + * License, v. 2.0. If a copy of the MPL was not distributed with this file,
1.8 + * You can obtain one at http://mozilla.org/MPL/2.0/. */
1.9 +
1.10 +#ifndef mozilla_dom_PromiseCallback_h
1.11 +#define mozilla_dom_PromiseCallback_h
1.12 +
1.13 +#include "mozilla/dom/Promise.h"
1.14 +#include "nsCycleCollectionParticipant.h"
1.15 +
1.16 +namespace mozilla {
1.17 +namespace dom {
1.18 +
1.19 +// This is the base class for any PromiseCallback.
1.20 +// It's a logical step in the promise chain of callbacks.
1.21 +class PromiseCallback : public nsISupports
1.22 +{
1.23 +public:
1.24 + NS_DECL_CYCLE_COLLECTING_ISUPPORTS
1.25 + NS_DECL_CYCLE_COLLECTION_CLASS(PromiseCallback)
1.26 +
1.27 + PromiseCallback();
1.28 + virtual ~PromiseCallback();
1.29 +
1.30 + virtual void Call(JS::Handle<JS::Value> aValue) = 0;
1.31 +
1.32 + enum Task {
1.33 + Resolve,
1.34 + Reject
1.35 + };
1.36 +
1.37 + // This factory returns a PromiseCallback object with refcount of 0.
1.38 + static PromiseCallback*
1.39 + Factory(Promise* aNextPromise, JS::Handle<JSObject*> aObject,
1.40 + AnyCallback* aCallback, Task aTask);
1.41 +};
1.42 +
1.43 +// WrapperPromiseCallback execs a JS Callback with a value, and then the return
1.44 +// value is sent to the aNextPromise->ResolveFunction() or to
1.45 +// aNextPromise->RejectFunction() if the JS Callback throws.
1.46 +class WrapperPromiseCallback MOZ_FINAL : public PromiseCallback
1.47 +{
1.48 +public:
1.49 + NS_DECL_ISUPPORTS_INHERITED
1.50 + NS_DECL_CYCLE_COLLECTION_SCRIPT_HOLDER_CLASS_INHERITED(WrapperPromiseCallback,
1.51 + PromiseCallback)
1.52 +
1.53 + void Call(JS::Handle<JS::Value> aValue) MOZ_OVERRIDE;
1.54 +
1.55 + WrapperPromiseCallback(Promise* aNextPromise, JS::Handle<JSObject*> aGlobal,
1.56 + AnyCallback* aCallback);
1.57 + ~WrapperPromiseCallback();
1.58 +
1.59 +private:
1.60 + nsRefPtr<Promise> mNextPromise;
1.61 + JS::Heap<JSObject*> mGlobal;
1.62 + nsRefPtr<AnyCallback> mCallback;
1.63 +};
1.64 +
1.65 +// ResolvePromiseCallback calls aPromise->ResolveFunction() with the value
1.66 +// received by Call().
1.67 +class ResolvePromiseCallback MOZ_FINAL : public PromiseCallback
1.68 +{
1.69 +public:
1.70 + NS_DECL_ISUPPORTS_INHERITED
1.71 + NS_DECL_CYCLE_COLLECTION_SCRIPT_HOLDER_CLASS_INHERITED(ResolvePromiseCallback,
1.72 + PromiseCallback)
1.73 +
1.74 + void Call(JS::Handle<JS::Value> aValue) MOZ_OVERRIDE;
1.75 +
1.76 + ResolvePromiseCallback(Promise* aPromise, JS::Handle<JSObject*> aGlobal);
1.77 + ~ResolvePromiseCallback();
1.78 +
1.79 +private:
1.80 + nsRefPtr<Promise> mPromise;
1.81 + JS::Heap<JSObject*> mGlobal;
1.82 +};
1.83 +
1.84 +// RejectPromiseCallback calls aPromise->RejectFunction() with the value
1.85 +// received by Call().
1.86 +class RejectPromiseCallback MOZ_FINAL : public PromiseCallback
1.87 +{
1.88 +public:
1.89 + NS_DECL_ISUPPORTS_INHERITED
1.90 + NS_DECL_CYCLE_COLLECTION_SCRIPT_HOLDER_CLASS_INHERITED(RejectPromiseCallback,
1.91 + PromiseCallback)
1.92 +
1.93 + void Call(JS::Handle<JS::Value> aValue) MOZ_OVERRIDE;
1.94 +
1.95 + RejectPromiseCallback(Promise* aPromise, JS::Handle<JSObject*> aGlobal);
1.96 + ~RejectPromiseCallback();
1.97 +
1.98 +private:
1.99 + nsRefPtr<Promise> mPromise;
1.100 + JS::Heap<JSObject*> mGlobal;
1.101 +};
1.102 +
1.103 +// NativePromiseCallback wraps a NativePromiseHandler.
1.104 +class NativePromiseCallback MOZ_FINAL : public PromiseCallback
1.105 +{
1.106 +public:
1.107 + NS_DECL_ISUPPORTS_INHERITED
1.108 + NS_DECL_CYCLE_COLLECTION_CLASS_INHERITED(NativePromiseCallback,
1.109 + PromiseCallback)
1.110 +
1.111 + void Call(JS::Handle<JS::Value> aValue) MOZ_OVERRIDE;
1.112 +
1.113 + NativePromiseCallback(PromiseNativeHandler* aHandler,
1.114 + Promise::PromiseState aState);
1.115 + ~NativePromiseCallback();
1.116 +
1.117 +private:
1.118 + nsRefPtr<PromiseNativeHandler> mHandler;
1.119 + Promise::PromiseState mState;
1.120 +};
1.121 +
1.122 +} // namespace dom
1.123 +} // namespace mozilla
1.124 +
1.125 +#endif // mozilla_dom_PromiseCallback_h
