зеркало из https://github.com/mozilla/pjs.git
385 строки
11 KiB
C++
385 строки
11 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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/* ***** BEGIN LICENSE BLOCK *****
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* Version: MPL 1.1/GPL 2.0/LGPL 2.1
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*
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* The contents of this file are subject to the Mozilla Public License Version
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* 1.1 (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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*
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* The Original Code is Indexed Database.
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*
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* The Initial Developer of the Original Code is
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* The Mozilla Foundation.
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* Portions created by the Initial Developer are Copyright (C) 2010
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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* Shawn Wilsher <me@shawnwilsher.com>
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* Ben Turner <bent.mozilla@gmail.com>
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either the GNU General Public License Version 2 or later (the "GPL"), or
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* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the MPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the MPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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#include "IDBRequest.h"
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#include "nsIJSContextStack.h"
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#include "nsIScriptContext.h"
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#include "nsComponentManagerUtils.h"
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#include "nsDOMClassInfoID.h"
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#include "nsDOMJSUtils.h"
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#include "nsContentUtils.h"
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#include "nsEventDispatcher.h"
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#include "nsPIDOMWindow.h"
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#include "nsStringGlue.h"
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#include "nsThreadUtils.h"
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#include "nsWrapperCacheInlines.h"
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#include "AsyncConnectionHelper.h"
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#include "IDBEvents.h"
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#include "IDBTransaction.h"
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#include "DOMError.h"
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USING_INDEXEDDB_NAMESPACE
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IDBRequest::IDBRequest()
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: mResultVal(JSVAL_VOID),
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mHaveResultOrErrorCode(false),
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mRooted(false)
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{
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NS_ASSERTION(NS_IsMainThread(), "Wrong thread!");
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}
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IDBRequest::~IDBRequest()
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{
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NS_ASSERTION(NS_IsMainThread(), "Wrong thread!");
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UnrootResultVal();
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}
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// static
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already_AddRefed<IDBRequest>
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IDBRequest::Create(nsISupports* aSource,
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IDBWrapperCache* aOwnerCache,
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IDBTransaction* aTransaction)
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{
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NS_ASSERTION(NS_IsMainThread(), "Wrong thread!");
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nsRefPtr<IDBRequest> request(new IDBRequest());
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request->mSource = aSource;
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request->mTransaction = aTransaction;
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request->BindToOwner(aOwnerCache);
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if (!request->SetScriptOwner(aOwnerCache->GetScriptOwner())) {
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return nsnull;
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}
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return request.forget();
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}
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void
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IDBRequest::Reset()
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{
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NS_ASSERTION(NS_IsMainThread(), "Wrong thread!");
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mResultVal = JSVAL_VOID;
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mHaveResultOrErrorCode = false;
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mError = nsnull;
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UnrootResultVal();
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}
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nsresult
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IDBRequest::NotifyHelperCompleted(HelperBase* aHelper)
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{
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NS_ASSERTION(NS_IsMainThread(), "Wrong thread!");
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NS_ASSERTION(!mHaveResultOrErrorCode, "Already called!");
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NS_ASSERTION(!PreservingWrapper(), "Already rooted?!");
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NS_ASSERTION(JSVAL_IS_VOID(mResultVal), "Should be undefined!");
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// See if our window is still valid. If not then we're going to pretend that
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// we never completed.
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if (NS_FAILED(CheckInnerWindowCorrectness())) {
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return NS_OK;
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}
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mHaveResultOrErrorCode = true;
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nsresult rv = aHelper->GetResultCode();
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// If the request failed then set the error code and return.
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if (NS_FAILED(rv)) {
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mError = DOMError::CreateForNSResult(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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JSContext* cx;
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if (GetScriptOwner()) {
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nsIThreadJSContextStack* cxStack = nsContentUtils::ThreadJSContextStack();
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NS_ASSERTION(cxStack, "Failed to get thread context stack!");
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cx = cxStack->GetSafeJSContext();
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if (!cx) {
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NS_WARNING("Failed to get safe JSContext!");
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rv = NS_ERROR_DOM_INDEXEDDB_UNKNOWN_ERR;
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mError = DOMError::CreateForNSResult(rv);
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return rv;
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}
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}
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else {
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nsIScriptContext* sc = GetContextForEventHandlers(&rv);
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NS_ENSURE_STATE(sc);
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cx = sc->GetNativeContext();
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NS_ASSERTION(cx, "Failed to get a context!");
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}
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JSObject* global = GetParentObject();
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NS_ASSERTION(global, "This should never be null!");
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JSAutoRequest ar(cx);
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JSAutoEnterCompartment ac;
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if (ac.enter(cx, global)) {
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RootResultVal();
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rv = aHelper->GetSuccessResult(cx, &mResultVal);
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if (NS_FAILED(rv)) {
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NS_WARNING("GetSuccessResult failed!");
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}
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}
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else {
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NS_WARNING("Failed to enter correct compartment!");
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rv = NS_ERROR_DOM_INDEXEDDB_UNKNOWN_ERR;
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}
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if (NS_SUCCEEDED(rv)) {
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mError = nsnull;
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}
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else {
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mError = DOMError::CreateForNSResult(rv);
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mResultVal = JSVAL_VOID;
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}
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return rv;
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}
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void
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IDBRequest::SetError(nsresult rv)
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{
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NS_ASSERTION(NS_FAILED(rv), "Er, what?");
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NS_ASSERTION(!mError, "Already have an error?");
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mError = DOMError::CreateForNSResult(rv);
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}
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void
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IDBRequest::RootResultValInternal()
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{
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NS_HOLD_JS_OBJECTS(this, IDBRequest);
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}
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void
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IDBRequest::UnrootResultValInternal()
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{
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NS_DROP_JS_OBJECTS(this, IDBRequest);
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}
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NS_IMETHODIMP
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IDBRequest::GetReadyState(nsAString& aReadyState)
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{
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NS_ASSERTION(NS_IsMainThread(), "Wrong thread!");
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if (mHaveResultOrErrorCode) {
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aReadyState.AssignLiteral("done");
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}
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else {
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aReadyState.AssignLiteral("pending");
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}
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return NS_OK;
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}
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NS_IMETHODIMP
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IDBRequest::GetSource(nsISupports** aSource)
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{
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NS_ASSERTION(NS_IsMainThread(), "Wrong thread!");
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nsCOMPtr<nsISupports> source(mSource);
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source.forget(aSource);
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return NS_OK;
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}
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NS_IMETHODIMP
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IDBRequest::GetTransaction(nsIIDBTransaction** aTransaction)
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{
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NS_ASSERTION(NS_IsMainThread(), "Wrong thread!");
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nsCOMPtr<nsIIDBTransaction> transaction(mTransaction);
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transaction.forget(aTransaction);
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return NS_OK;
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}
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NS_IMETHODIMP
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IDBRequest::GetResult(jsval* aResult)
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{
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NS_ASSERTION(NS_IsMainThread(), "Wrong thread!");
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if (!mHaveResultOrErrorCode) {
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// XXX Need a real error code here.
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return NS_ERROR_DOM_INDEXEDDB_NOT_ALLOWED_ERR;
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}
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*aResult = mResultVal;
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return NS_OK;
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}
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NS_IMETHODIMP
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IDBRequest::GetError(nsIDOMDOMError** aError)
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{
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NS_ASSERTION(NS_IsMainThread(), "Wrong thread!");
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if (!mHaveResultOrErrorCode) {
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// XXX Need a real error code here.
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return NS_ERROR_DOM_INDEXEDDB_NOT_ALLOWED_ERR;
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}
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NS_IF_ADDREF(*aError = mError);
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return NS_OK;
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}
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NS_IMPL_CYCLE_COLLECTION_CLASS(IDBRequest)
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NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN_INHERITED(IDBRequest, IDBWrapperCache)
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// Don't need NS_IMPL_CYCLE_COLLECTION_TRAVERSE_SCRIPT_OBJECTS because
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// nsDOMEventTargetHelper does it for us.
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NS_CYCLE_COLLECTION_TRAVERSE_EVENT_HANDLER(success)
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NS_CYCLE_COLLECTION_TRAVERSE_EVENT_HANDLER(error)
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NS_IMPL_CYCLE_COLLECTION_TRAVERSE_NSCOMPTR(mSource)
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NS_IMPL_CYCLE_COLLECTION_TRAVERSE_NSCOMPTR_AMBIGUOUS(mTransaction,
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nsPIDOMEventTarget)
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NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END
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NS_IMPL_CYCLE_COLLECTION_UNLINK_BEGIN_INHERITED(IDBRequest, IDBWrapperCache)
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tmp->mResultVal = JSVAL_VOID;
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tmp->UnrootResultVal();
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NS_CYCLE_COLLECTION_UNLINK_EVENT_HANDLER(success)
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NS_CYCLE_COLLECTION_UNLINK_EVENT_HANDLER(error)
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NS_IMPL_CYCLE_COLLECTION_UNLINK_NSCOMPTR(mSource)
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NS_IMPL_CYCLE_COLLECTION_UNLINK_NSCOMPTR(mTransaction)
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NS_IMPL_CYCLE_COLLECTION_UNLINK_END
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NS_IMPL_CYCLE_COLLECTION_TRACE_BEGIN_INHERITED(IDBRequest, IDBWrapperCache)
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// Don't need NS_IMPL_CYCLE_COLLECTION_TRACE_PRESERVED_WRAPPER because
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// nsDOMEventTargetHelper does it for us.
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if (JSVAL_IS_GCTHING(tmp->mResultVal)) {
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void *gcThing = JSVAL_TO_GCTHING(tmp->mResultVal);
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NS_IMPL_CYCLE_COLLECTION_TRACE_JS_CALLBACK(gcThing, "mResultVal")
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}
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NS_IMPL_CYCLE_COLLECTION_TRACE_END
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NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION_INHERITED(IDBRequest)
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NS_INTERFACE_MAP_ENTRY(nsIIDBRequest)
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NS_DOM_INTERFACE_MAP_ENTRY_CLASSINFO(IDBRequest)
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NS_INTERFACE_MAP_END_INHERITING(IDBWrapperCache)
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NS_IMPL_ADDREF_INHERITED(IDBRequest, IDBWrapperCache)
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NS_IMPL_RELEASE_INHERITED(IDBRequest, IDBWrapperCache)
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DOMCI_DATA(IDBRequest, IDBRequest)
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NS_IMPL_EVENT_HANDLER(IDBRequest, success);
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NS_IMPL_EVENT_HANDLER(IDBRequest, error);
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nsresult
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IDBRequest::PreHandleEvent(nsEventChainPreVisitor& 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 = mTransaction;
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return NS_OK;
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}
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IDBOpenDBRequest::~IDBOpenDBRequest()
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{
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NS_ASSERTION(NS_IsMainThread(), "Wrong thread!");
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UnrootResultVal();
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}
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// static
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already_AddRefed<IDBOpenDBRequest>
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IDBOpenDBRequest::Create(nsPIDOMWindow* aOwner,
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JSObject* aScriptOwner)
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{
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NS_ASSERTION(NS_IsMainThread(), "Wrong thread!");
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nsRefPtr<IDBOpenDBRequest> request(new IDBOpenDBRequest());
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request->BindToOwner(aOwner);
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if (!request->SetScriptOwner(aScriptOwner)) {
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return nsnull;
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}
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return request.forget();
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}
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void
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IDBOpenDBRequest::SetTransaction(IDBTransaction* aTransaction)
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{
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mTransaction = aTransaction;
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}
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void
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IDBOpenDBRequest::RootResultValInternal()
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{
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NS_HOLD_JS_OBJECTS(this, IDBOpenDBRequest);
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}
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void
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IDBOpenDBRequest::UnrootResultValInternal()
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{
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NS_DROP_JS_OBJECTS(this, IDBOpenDBRequest);
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}
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NS_IMPL_CYCLE_COLLECTION_CLASS(IDBOpenDBRequest)
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NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN_INHERITED(IDBOpenDBRequest,
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IDBRequest)
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NS_CYCLE_COLLECTION_TRAVERSE_EVENT_HANDLER(upgradeneeded)
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NS_CYCLE_COLLECTION_TRAVERSE_EVENT_HANDLER(blocked)
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NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END
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NS_IMPL_CYCLE_COLLECTION_UNLINK_BEGIN_INHERITED(IDBOpenDBRequest,
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IDBRequest)
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NS_CYCLE_COLLECTION_UNLINK_EVENT_HANDLER(upgradeneeded)
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NS_CYCLE_COLLECTION_UNLINK_EVENT_HANDLER(blocked)
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NS_IMPL_CYCLE_COLLECTION_UNLINK_END
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NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION_INHERITED(IDBOpenDBRequest)
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NS_INTERFACE_MAP_ENTRY(nsIIDBOpenDBRequest)
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NS_DOM_INTERFACE_MAP_ENTRY_CLASSINFO(IDBOpenDBRequest)
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NS_INTERFACE_MAP_END_INHERITING(IDBRequest)
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NS_IMPL_ADDREF_INHERITED(IDBOpenDBRequest, IDBRequest)
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NS_IMPL_RELEASE_INHERITED(IDBOpenDBRequest, IDBRequest)
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DOMCI_DATA(IDBOpenDBRequest, IDBOpenDBRequest)
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NS_IMPL_EVENT_HANDLER(IDBOpenDBRequest, blocked);
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NS_IMPL_EVENT_HANDLER(IDBOpenDBRequest, upgradeneeded);
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