mirror of
https://github.com/mozilla/gecko-dev.git
synced 2024-11-01 06:35:42 +00:00
345 lines
8.8 KiB
C++
345 lines
8.8 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 "DOMError.h"
|
|
#include "nsCxPusher.h"
|
|
#include "nsThreadUtils.h"
|
|
#include "DOMCursor.h"
|
|
#include "nsIDOMEvent.h"
|
|
|
|
using mozilla::dom::DOMRequest;
|
|
using mozilla::dom::DOMRequestService;
|
|
using mozilla::dom::DOMCursor;
|
|
using mozilla::AutoSafeJSContext;
|
|
|
|
DOMRequest::DOMRequest(nsPIDOMWindow* aWindow)
|
|
: nsDOMEventTargetHelper(aWindow->IsInnerWindow() ?
|
|
aWindow : aWindow->GetCurrentInnerWindow())
|
|
, mResult(JSVAL_VOID)
|
|
, mDone(false)
|
|
{
|
|
}
|
|
|
|
NS_IMPL_CYCLE_COLLECTION_CLASS(DOMRequest)
|
|
|
|
NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN_INHERITED(DOMRequest,
|
|
nsDOMEventTargetHelper)
|
|
NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mError)
|
|
NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END
|
|
|
|
NS_IMPL_CYCLE_COLLECTION_UNLINK_BEGIN_INHERITED(DOMRequest,
|
|
nsDOMEventTargetHelper)
|
|
NS_IMPL_CYCLE_COLLECTION_UNLINK(mError)
|
|
tmp->mResult = JSVAL_VOID;
|
|
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.
|
|
NS_IMPL_CYCLE_COLLECTION_TRACE_JSVAL_MEMBER_CALLBACK(mResult)
|
|
NS_IMPL_CYCLE_COLLECTION_TRACE_END
|
|
|
|
NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION_INHERITED(DOMRequest)
|
|
NS_INTERFACE_MAP_ENTRY(nsIDOMDOMRequest)
|
|
NS_INTERFACE_MAP_END_INHERITING(nsDOMEventTargetHelper)
|
|
|
|
NS_IMPL_ADDREF_INHERITED(DOMRequest, nsDOMEventTargetHelper)
|
|
NS_IMPL_RELEASE_INHERITED(DOMRequest, nsDOMEventTargetHelper)
|
|
|
|
/* virtual */ JSObject*
|
|
DOMRequest::WrapObject(JSContext* aCx, JS::Handle<JSObject*> aScope)
|
|
{
|
|
return DOMRequestBinding::Wrap(aCx, aScope, this);
|
|
}
|
|
|
|
NS_IMPL_EVENT_HANDLER(DOMRequest, success)
|
|
NS_IMPL_EVENT_HANDLER(DOMRequest, error)
|
|
|
|
NS_IMETHODIMP
|
|
DOMRequest::GetReadyState(nsAString& aReadyState)
|
|
{
|
|
DOMRequestReadyState readyState = ReadyState();
|
|
switch (readyState) {
|
|
case DOMRequestReadyState::Pending:
|
|
aReadyState.AssignLiteral("pending");
|
|
break;
|
|
case DOMRequestReadyState::Done:
|
|
aReadyState.AssignLiteral("done");
|
|
break;
|
|
default:
|
|
MOZ_CRASH("Unrecognized readyState.");
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
DOMRequest::GetResult(JS::MutableHandle<JS::Value> aResult)
|
|
{
|
|
aResult.set(Result());
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
DOMRequest::GetError(nsISupports** aError)
|
|
{
|
|
NS_IF_ADDREF(*aError = GetError());
|
|
return NS_OK;
|
|
}
|
|
|
|
void
|
|
DOMRequest::FireSuccess(JS::Handle<JS::Value> aResult)
|
|
{
|
|
NS_ASSERTION(!mDone, "mDone shouldn't have been set to true already!");
|
|
NS_ASSERTION(!mError, "mError shouldn't have been set!");
|
|
NS_ASSERTION(mResult == JSVAL_VOID, "mResult shouldn't have been set!");
|
|
|
|
mDone = true;
|
|
if (JSVAL_IS_GCTHING(aResult)) {
|
|
RootResultVal();
|
|
}
|
|
mResult = aResult;
|
|
|
|
FireEvent(NS_LITERAL_STRING("success"), false, false);
|
|
}
|
|
|
|
void
|
|
DOMRequest::FireError(const nsAString& aError)
|
|
{
|
|
NS_ASSERTION(!mDone, "mDone shouldn't have been set to true already!");
|
|
NS_ASSERTION(!mError, "mError shouldn't have been set!");
|
|
NS_ASSERTION(mResult == JSVAL_VOID, "mResult shouldn't have been set!");
|
|
|
|
mDone = true;
|
|
mError = new DOMError(GetOwner(), aError);
|
|
|
|
FireEvent(NS_LITERAL_STRING("error"), true, true);
|
|
}
|
|
|
|
void
|
|
DOMRequest::FireError(nsresult aError)
|
|
{
|
|
NS_ASSERTION(!mDone, "mDone shouldn't have been set to true already!");
|
|
NS_ASSERTION(!mError, "mError shouldn't have been set!");
|
|
NS_ASSERTION(mResult == JSVAL_VOID, "mResult shouldn't have been set!");
|
|
|
|
mDone = true;
|
|
mError = new DOMError(GetOwner(), aError);
|
|
|
|
FireEvent(NS_LITERAL_STRING("error"), true, true);
|
|
}
|
|
|
|
void
|
|
DOMRequest::FireDetailedError(nsISupports* aError)
|
|
{
|
|
NS_ASSERTION(!mDone, "mDone shouldn't have been set to true already!");
|
|
NS_ASSERTION(!mError, "mError shouldn't have been set!");
|
|
NS_ASSERTION(mResult == JSVAL_VOID, "mResult shouldn't have been set!");
|
|
NS_ASSERTION(aError, "No detailed error provided");
|
|
|
|
mDone = true;
|
|
mError = aError;
|
|
|
|
FireEvent(NS_LITERAL_STRING("error"), true, true);
|
|
}
|
|
|
|
void
|
|
DOMRequest::FireEvent(const nsAString& aType, bool aBubble, bool aCancelable)
|
|
{
|
|
if (NS_FAILED(CheckInnerWindowCorrectness())) {
|
|
return;
|
|
}
|
|
|
|
nsCOMPtr<nsIDOMEvent> event;
|
|
NS_NewDOMEvent(getter_AddRefs(event), this, nullptr, nullptr);
|
|
nsresult rv = event->InitEvent(aType, aBubble, aCancelable);
|
|
if (NS_FAILED(rv)) {
|
|
return;
|
|
}
|
|
|
|
event->SetTrusted(true);
|
|
|
|
bool dummy;
|
|
DispatchEvent(event, &dummy);
|
|
}
|
|
|
|
void
|
|
DOMRequest::RootResultVal()
|
|
{
|
|
mozilla::HoldJSObjects(this);
|
|
}
|
|
|
|
NS_IMPL_ISUPPORTS1(DOMRequestService, nsIDOMRequestService)
|
|
|
|
NS_IMETHODIMP
|
|
DOMRequestService::CreateRequest(nsIDOMWindow* aWindow,
|
|
nsIDOMDOMRequest** aRequest)
|
|
{
|
|
nsCOMPtr<nsPIDOMWindow> win(do_QueryInterface(aWindow));
|
|
NS_ENSURE_STATE(win);
|
|
NS_ADDREF(*aRequest = new DOMRequest(win));
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
DOMRequestService::CreateCursor(nsIDOMWindow* aWindow,
|
|
nsICursorContinueCallback* aCallback,
|
|
nsIDOMDOMCursor** aCursor)
|
|
{
|
|
nsCOMPtr<nsPIDOMWindow> win(do_QueryInterface(aWindow));
|
|
NS_ENSURE_STATE(win);
|
|
NS_ADDREF(*aCursor = new DOMCursor(win, aCallback));
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
DOMRequestService::FireSuccess(nsIDOMDOMRequest* aRequest,
|
|
JS::Handle<JS::Value> aResult)
|
|
{
|
|
NS_ENSURE_STATE(aRequest);
|
|
static_cast<DOMRequest*>(aRequest)->FireSuccess(aResult);
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
DOMRequestService::FireError(nsIDOMDOMRequest* aRequest,
|
|
const nsAString& aError)
|
|
{
|
|
NS_ENSURE_STATE(aRequest);
|
|
static_cast<DOMRequest*>(aRequest)->FireError(aError);
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
DOMRequestService::FireDetailedError(nsIDOMDOMRequest* aRequest,
|
|
nsISupports* aError)
|
|
{
|
|
NS_ENSURE_STATE(aRequest);
|
|
static_cast<DOMRequest*>(aRequest)->FireDetailedError(aError);
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
class FireSuccessAsyncTask : public nsRunnable
|
|
{
|
|
|
|
FireSuccessAsyncTask(DOMRequest* aRequest,
|
|
const JS::Value& aResult) :
|
|
mReq(aRequest),
|
|
mResult(aResult),
|
|
mIsSetup(false)
|
|
{
|
|
}
|
|
|
|
public:
|
|
|
|
void
|
|
Setup()
|
|
{
|
|
AutoSafeJSContext cx;
|
|
JS_AddValueRoot(cx, &mResult);
|
|
mIsSetup = true;
|
|
}
|
|
|
|
// Due to the fact that initialization can fail during shutdown (since we
|
|
// can't fetch a js context), set up an initiatization function to make sure
|
|
// we can return the failure appropriately
|
|
static nsresult
|
|
Dispatch(DOMRequest* aRequest,
|
|
const JS::Value& aResult)
|
|
{
|
|
NS_ASSERTION(NS_IsMainThread(), "Wrong thread!");
|
|
nsRefPtr<FireSuccessAsyncTask> asyncTask = new FireSuccessAsyncTask(aRequest, aResult);
|
|
asyncTask->Setup();
|
|
if (NS_FAILED(NS_DispatchToMainThread(asyncTask))) {
|
|
NS_WARNING("Failed to dispatch to main thread!");
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
Run()
|
|
{
|
|
mReq->FireSuccess(JS::Handle<JS::Value>::fromMarkedLocation(&mResult));
|
|
return NS_OK;
|
|
}
|
|
|
|
~FireSuccessAsyncTask()
|
|
{
|
|
NS_ASSERTION(NS_IsMainThread(), "Wrong thread!");
|
|
if(!mIsSetup) {
|
|
// If we never set up, no reason to unroot
|
|
return;
|
|
}
|
|
|
|
AutoSafeJSContext cx;
|
|
JS_RemoveValueRoot(cx, &mResult);
|
|
}
|
|
private:
|
|
nsRefPtr<DOMRequest> mReq;
|
|
JS::Value mResult;
|
|
bool mIsSetup;
|
|
};
|
|
|
|
class FireErrorAsyncTask : public nsRunnable
|
|
{
|
|
public:
|
|
FireErrorAsyncTask(DOMRequest* aRequest,
|
|
const nsAString& aError) :
|
|
mReq(aRequest),
|
|
mError(aError)
|
|
{
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
Run()
|
|
{
|
|
mReq->FireError(mError);
|
|
return NS_OK;
|
|
}
|
|
private:
|
|
nsRefPtr<DOMRequest> mReq;
|
|
nsString mError;
|
|
};
|
|
|
|
NS_IMETHODIMP
|
|
DOMRequestService::FireSuccessAsync(nsIDOMDOMRequest* aRequest,
|
|
JS::Handle<JS::Value> aResult)
|
|
{
|
|
NS_ENSURE_STATE(aRequest);
|
|
return FireSuccessAsyncTask::Dispatch(static_cast<DOMRequest*>(aRequest), aResult);
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
DOMRequestService::FireErrorAsync(nsIDOMDOMRequest* aRequest,
|
|
const nsAString& aError)
|
|
{
|
|
NS_ENSURE_STATE(aRequest);
|
|
nsCOMPtr<nsIRunnable> asyncTask =
|
|
new FireErrorAsyncTask(static_cast<DOMRequest*>(aRequest), aError);
|
|
if (NS_FAILED(NS_DispatchToMainThread(asyncTask))) {
|
|
NS_WARNING("Failed to dispatch to main thread!");
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
DOMRequestService::FireDone(nsIDOMDOMCursor* aCursor) {
|
|
NS_ENSURE_STATE(aCursor);
|
|
static_cast<DOMCursor*>(aCursor)->FireDone();
|
|
|
|
return NS_OK;
|
|
}
|