gecko-dev/dom/base/DOMRequest.cpp

171 строка
4.4 KiB
C++

/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=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/. */
#include "DOMRequest.h"
#include "mozilla/Util.h"
#include "nsDOMClassInfo.h"
#include "DOMError.h"
#include "nsEventDispatcher.h"
#include "nsIPrivateDOMEvent.h"
#include "nsDOMEvent.h"
using mozilla::dom::DOMRequest;
using mozilla::dom::DOMRequestService;
DOMRequest::DOMRequest(nsIDOMWindow* aWindow)
: mDone(false)
, mResult(JSVAL_VOID)
, mRooted(false)
{
nsCOMPtr<nsPIDOMWindow> window = do_QueryInterface(aWindow);
BindToOwner(window->IsInnerWindow() ? window.get() :
window->GetCurrentInnerWindow());
}
DOMCI_DATA(DOMRequest, DOMRequest)
NS_IMPL_CYCLE_COLLECTION_CLASS(DOMRequest)
NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN_INHERITED(DOMRequest,
nsDOMEventTargetHelper)
NS_CYCLE_COLLECTION_TRAVERSE_EVENT_HANDLER(success)
NS_CYCLE_COLLECTION_TRAVERSE_EVENT_HANDLER(error)
NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END
NS_IMPL_CYCLE_COLLECTION_UNLINK_BEGIN_INHERITED(DOMRequest,
nsDOMEventTargetHelper)
tmp->mResult = JSVAL_VOID;
tmp->UnrootResultVal();
NS_CYCLE_COLLECTION_UNLINK_EVENT_HANDLER(success)
NS_CYCLE_COLLECTION_UNLINK_EVENT_HANDLER(error)
NS_IMPL_CYCLE_COLLECTION_UNLINK_END
NS_IMPL_CYCLE_COLLECTION_TRACE_BEGIN_INHERITED(DOMRequest,
nsDOMEventTargetHelper)
// Don't need NS_IMPL_CYCLE_COLLECTION_TRACE_PRESERVED_WRAPPER because
// nsDOMEventTargetHelper does it for us.
if (JSVAL_IS_GCTHING(tmp->mResult)) {
void *gcThing = JSVAL_TO_GCTHING(tmp->mResult);
NS_IMPL_CYCLE_COLLECTION_TRACE_JS_CALLBACK(gcThing, "mResult")
}
NS_IMPL_CYCLE_COLLECTION_TRACE_END
NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION_INHERITED(DOMRequest)
NS_INTERFACE_MAP_ENTRY(nsIDOMDOMRequest)
NS_DOM_INTERFACE_MAP_ENTRY_CLASSINFO(DOMRequest)
NS_INTERFACE_MAP_END_INHERITING(nsDOMEventTargetHelper)
NS_IMPL_ADDREF_INHERITED(DOMRequest, nsDOMEventTargetHelper)
NS_IMPL_RELEASE_INHERITED(DOMRequest, nsDOMEventTargetHelper)
NS_IMPL_EVENT_HANDLER(DOMRequest, success);
NS_IMPL_EVENT_HANDLER(DOMRequest, error);
NS_IMETHODIMP
DOMRequest::GetReadyState(nsAString& aReadyState)
{
mDone ? aReadyState.AssignLiteral("done") :
aReadyState.AssignLiteral("pending");
return NS_OK;
}
NS_IMETHODIMP
DOMRequest::GetResult(jsval* aResult)
{
NS_ASSERTION(mDone || mResult == JSVAL_VOID,
"Result should be undefined when pending");
*aResult = mResult;
return NS_OK;
}
NS_IMETHODIMP
DOMRequest::GetError(nsIDOMDOMError** aError)
{
NS_ASSERTION(mDone || !mError,
"Error should be null when pending");
NS_IF_ADDREF(*aError = mError);
return NS_OK;
}
void
DOMRequest::FireSuccess(jsval aResult)
{
NS_ABORT_IF_FALSE(!mDone, "Already fired success/error");
mDone = true;
RootResultVal();
mResult = aResult;
FireEvent(NS_LITERAL_STRING("success"));
}
void
DOMRequest::FireError(const nsAString& aError)
{
NS_ABORT_IF_FALSE(!mDone, "Already fired success/error");
mDone = true;
mError = DOMError::CreateWithName(aError);
FireEvent(NS_LITERAL_STRING("error"));
}
void
DOMRequest::FireEvent(const nsAString& aType)
{
if (NS_FAILED(CheckInnerWindowCorrectness())) {
return;
}
nsRefPtr<nsDOMEvent> event = new nsDOMEvent(nsnull, nsnull);
nsresult rv = event->InitEvent(aType, false, false);
if (NS_FAILED(rv)) {
return;
}
rv = event->SetTrusted(true);
if (NS_FAILED(rv)) {
return;
}
bool dummy;
DispatchEvent(event, &dummy);
}
NS_IMPL_ISUPPORTS1(DOMRequestService, nsIDOMRequestService)
NS_IMETHODIMP
DOMRequestService::CreateRequest(nsIDOMWindow* aWindow,
nsIDOMDOMRequest** aRequest)
{
NS_ADDREF(*aRequest = new DOMRequest(aWindow));
return NS_OK;
}
NS_IMETHODIMP
DOMRequestService::FireSuccess(nsIDOMDOMRequest* aRequest,
const jsval& aResult)
{
static_cast<DOMRequest*>(aRequest)->FireSuccess(aResult);
return NS_OK;
}
NS_IMETHODIMP
DOMRequestService::FireError(nsIDOMDOMRequest* aRequest,
const nsAString& aError)
{
static_cast<DOMRequest*>(aRequest)->FireError(aError);
return NS_OK;
}