зеркало из https://github.com/mozilla/gecko-dev.git
152 строки
3.6 KiB
C++
152 строки
3.6 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=2 et sw=2 tw=80: */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this file,
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* You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "FileRequest.h"
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#include "FileHandle.h"
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#include "FileHelper.h"
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#include "js/RootingAPI.h"
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#include "jsapi.h"
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#include "MainThreadUtils.h"
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#include "mozilla/dom/FileRequestBinding.h"
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#include "mozilla/EventDispatcher.h"
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#include "nsCOMPtr.h"
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#include "nsCxPusher.h"
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#include "nsDebug.h"
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#include "nsError.h"
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#include "nsIDOMEvent.h"
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#include "mozilla/dom/ProgressEvent.h"
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#include "nsIScriptContext.h"
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#include "nsLiteralString.h"
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namespace mozilla {
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namespace dom {
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FileRequest::FileRequest(nsPIDOMWindow* aWindow)
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: DOMRequest(aWindow), mWrapAsDOMRequest(false)
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{
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NS_ASSERTION(NS_IsMainThread(), "Wrong thread!");
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}
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FileRequest::~FileRequest()
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{
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NS_ASSERTION(NS_IsMainThread(), "Wrong thread!");
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}
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// static
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already_AddRefed<FileRequest>
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FileRequest::Create(nsPIDOMWindow* aOwner, FileHandle* aFileHandle,
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bool aWrapAsDOMRequest)
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{
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NS_ASSERTION(NS_IsMainThread(), "Wrong thread!");
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nsRefPtr<FileRequest> request = new FileRequest(aOwner);
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request->mFileHandle = aFileHandle;
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request->mWrapAsDOMRequest = aWrapAsDOMRequest;
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return request.forget();
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}
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nsresult
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FileRequest::PreHandleEvent(EventChainPreVisitor& aVisitor)
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{
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NS_ASSERTION(NS_IsMainThread(), "Wrong thread!");
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aVisitor.mCanHandle = true;
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aVisitor.mParentTarget = mFileHandle;
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return NS_OK;
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}
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nsresult
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FileRequest::NotifyHelperCompleted(FileHelper* aFileHelper)
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{
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NS_ASSERTION(NS_IsMainThread(), "Wrong thread!");
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nsresult rv = aFileHelper->mResultCode;
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// If the request failed then fire error event and return.
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if (NS_FAILED(rv)) {
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FireError(rv);
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return NS_OK;
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}
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// Otherwise we need to get the result from the helper.
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nsIScriptContext* sc = GetContextForEventHandlers(&rv);
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NS_ENSURE_STATE(sc);
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AutoJSContext cx;
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NS_ASSERTION(cx, "Failed to get a context!");
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JS::Rooted<JS::Value> result(cx);
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JS::Rooted<JSObject*> global(cx, sc->GetWindowProxy());
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NS_ASSERTION(global, "Failed to get global object!");
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JSAutoCompartment ac(cx, global);
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rv = aFileHelper->GetSuccessResult(cx, &result);
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if (NS_FAILED(rv)) {
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NS_WARNING("GetSuccessResult failed!");
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}
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if (NS_SUCCEEDED(rv)) {
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FireSuccess(result);
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}
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else {
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FireError(rv);
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}
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return NS_OK;
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}
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NS_IMPL_CYCLE_COLLECTION_INHERITED(FileRequest, DOMRequest,
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mFileHandle)
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NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION_INHERITED(FileRequest)
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NS_INTERFACE_MAP_END_INHERITING(DOMRequest)
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NS_IMPL_ADDREF_INHERITED(FileRequest, DOMRequest)
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NS_IMPL_RELEASE_INHERITED(FileRequest, DOMRequest)
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// virtual
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JSObject*
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FileRequest::WrapObject(JSContext* aCx)
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{
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if (mWrapAsDOMRequest) {
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return DOMRequest::WrapObject(aCx);
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}
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return FileRequestBinding::Wrap(aCx, this);
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}
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FileHandle*
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FileRequest::GetFileHandle() const
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{
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MOZ_ASSERT(NS_IsMainThread(), "Wrong thread!");
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return mFileHandle;
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}
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void
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FileRequest::FireProgressEvent(uint64_t aLoaded, uint64_t aTotal)
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{
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if (NS_FAILED(CheckInnerWindowCorrectness())) {
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return;
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}
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ProgressEventInit init;
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init.mBubbles = false;
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init.mCancelable = false;
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init.mLengthComputable = false;
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init.mLoaded = aLoaded;
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init.mTotal = aTotal;
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nsRefPtr<ProgressEvent> event =
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ProgressEvent::Constructor(this, NS_LITERAL_STRING("progress"), init);
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DispatchTrustedEvent(event);
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}
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} // namespace dom
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} // namespace mozilla
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