gecko/dom/base/PostMessageEvent.h

109 lines
3.3 KiB
C++

/* -*- 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_PostMessageEvent_h
#define mozilla_dom_PostMessageEvent_h
#include "js/StructuredClone.h"
#include "nsCOMPtr.h"
#include "nsRefPtr.h"
#include "nsTArray.h"
class nsGlobalWindow;
class nsIPrincipal;
namespace mozilla {
namespace dom {
class MessagePortBase;
class MessagePortIdentifier;
/**
* Class used to represent events generated by calls to Window.postMessage,
* which asynchronously creates and dispatches events.
*/
class PostMessageEvent final : public nsRunnable
{
public:
NS_DECL_NSIRUNNABLE
PostMessageEvent(nsGlobalWindow* aSource,
const nsAString& aCallerOrigin,
nsGlobalWindow* aTargetWindow,
nsIPrincipal* aProvidedPrincipal,
bool aTrustedCaller);
bool Write(JSContext* aCx, JS::Handle<JS::Value> aMessage,
JS::Handle<JS::Value> aTransfer, bool aSubsumes,
nsPIDOMWindow* aWindow);
private:
~PostMessageEvent();
const MessagePortIdentifier& GetPortIdentifier(uint64_t aId);
MessagePortIdentifier* NewPortIdentifier(uint64_t* aPosition);
bool StoreISupports(nsISupports* aSupports)
{
mSupportsArray.AppendElement(aSupports);
return true;
}
static JSObject*
ReadStructuredClone(JSContext* cx,
JSStructuredCloneReader* reader,
uint32_t tag,
uint32_t data,
void* closure);
static bool
WriteStructuredClone(JSContext* cx,
JSStructuredCloneWriter* writer,
JS::Handle<JSObject*> obj,
void *closure);
static bool
ReadTransferStructuredClone(JSContext* aCx,
JSStructuredCloneReader* reader,
uint32_t tag, void* aData,
uint64_t aExtraData,
void* aClosure,
JS::MutableHandle<JSObject*> returnObject);
static bool
TransferStructuredClone(JSContext* aCx,
JS::Handle<JSObject*> aObj,
void* aClosure,
uint32_t* aTag,
JS::TransferableOwnership* aOwnership,
void** aContent,
uint64_t* aExtraData);
static void
FreeTransferStructuredClone(uint32_t aTag,
JS::TransferableOwnership aOwnership,
void *aContent,
uint64_t aExtraData,
void* aClosure);
static const JSStructuredCloneCallbacks sPostMessageCallbacks;
JSAutoStructuredCloneBuffer mBuffer;
nsRefPtr<nsGlobalWindow> mSource;
nsString mCallerOrigin;
nsRefPtr<nsGlobalWindow> mTargetWindow;
nsCOMPtr<nsIPrincipal> mProvidedPrincipal;
bool mTrustedCaller;
nsTArray<nsCOMPtr<nsISupports>> mSupportsArray;
nsTArray<MessagePortIdentifier> mPortIdentifiers;
};
} // dom namespace
} // mozilla namespace
#endif // mozilla_dom_PostMessageEvent_h