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FileRequest.cpp
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FileRequest.cpp
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/* -*- 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 "FileRequest.h"
#include "DOMFileRequest.h"
#include "nsCxPusher.h"
#include "nsEventDispatcher.h"
#include "nsError.h"
#include "nsIDOMProgressEvent.h"
#include "nsDOMClassInfoID.h"
#include "FileHelper.h"
#include "LockedFile.h"
USING_FILE_NAMESPACE
FileRequest::FileRequest(nsIDOMWindow* aWindow)
: DOMRequest(aWindow)
{
NS_ASSERTION(NS_IsMainThread(), "Wrong thread!");
}
FileRequest::~FileRequest()
{
NS_ASSERTION(NS_IsMainThread(), "Wrong thread!");
}
// static
already_AddRefed<FileRequest>
FileRequest::Create(nsIDOMWindow* aOwner,
LockedFile* aLockedFile,
bool aIsFileRequest)
{
NS_ASSERTION(NS_IsMainThread(), "Wrong thread!");
nsRefPtr<FileRequest> request;
if (aIsFileRequest) {
request = new DOMFileRequest(aOwner);
} else {
request = new FileRequest(aOwner);
}
request->mLockedFile = aLockedFile;
return request.forget();
}
nsresult
FileRequest::PreHandleEvent(nsEventChainPreVisitor& aVisitor)
{
NS_ASSERTION(NS_IsMainThread(), "Wrong thread!");
aVisitor.mCanHandle = true;
aVisitor.mParentTarget = mLockedFile;
return NS_OK;
}
nsresult
FileRequest::NotifyHelperCompleted(FileHelper* aFileHelper)
{
NS_ASSERTION(NS_IsMainThread(), "Wrong thread!");
nsresult rv = aFileHelper->mResultCode;
// If the request failed then fire error event and return.
if (NS_FAILED(rv)) {
FireError(rv);
return NS_OK;
}
// Otherwise we need to get the result from the helper.
nsIScriptContext* sc = GetContextForEventHandlers(&rv);
NS_ENSURE_STATE(sc);
AutoPushJSContext cx(sc->GetNativeContext());
NS_ASSERTION(cx, "Failed to get a context!");
JS::Rooted<JS::Value> result(cx);
JS::Rooted<JSObject*> global(cx, sc->GetWindowProxy());
NS_ASSERTION(global, "Failed to get global object!");
JSAutoCompartment ac(cx, global);
rv = aFileHelper->GetSuccessResult(cx, result.address());
if (NS_FAILED(rv)) {
NS_WARNING("GetSuccessResult failed!");
}
if (NS_SUCCEEDED(rv)) {
FireSuccess(result);
}
else {
FireError(rv);
}
return NS_OK;
}
NS_IMPL_CYCLE_COLLECTION_INHERITED_1(FileRequest, DOMRequest,
mLockedFile)
NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION_INHERITED(FileRequest)
NS_INTERFACE_MAP_END_INHERITING(DOMRequest)
NS_IMPL_ADDREF_INHERITED(FileRequest, DOMRequest)
NS_IMPL_RELEASE_INHERITED(FileRequest, DOMRequest)
void
FileRequest::FireProgressEvent(uint64_t aLoaded, uint64_t aTotal)
{
if (NS_FAILED(CheckInnerWindowCorrectness())) {
return;
}
nsCOMPtr<nsIDOMEvent> event;
nsresult rv = NS_NewDOMProgressEvent(getter_AddRefs(event), this,
nullptr, nullptr);
if (NS_FAILED(rv)) {
return;
}
nsCOMPtr<nsIDOMProgressEvent> progress = do_QueryInterface(event);
MOZ_ASSERT(progress);
rv = progress->InitProgressEvent(NS_LITERAL_STRING("progress"), false, false,
false, aLoaded, aTotal);
if (NS_FAILED(rv)) {
return;
}
DispatchTrustedEvent(event);
}