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356 lines
12 KiB
C++
356 lines
12 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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* 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 "IDBEvents.h"
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#include "nsIIDBDatabaseException.h"
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#include "nsIPrivateDOMEvent.h"
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#include "nsDOMClassInfo.h"
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#include "nsThreadUtils.h"
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#include "IDBRequest.h"
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#define NS_DOM_INTERFACE_MAP_ENTRY_CLASSINFO_CONDITIONAL(_class, _condition) \
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if ((_condition) && (aIID.Equals(NS_GET_IID(nsIClassInfo)) || \
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aIID.Equals(NS_GET_IID(nsXPCClassInfo)))) { \
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foundInterface = NS_GetDOMClassInfoInstance(eDOMClassInfo_##_class##_id); \
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if (!foundInterface) { \
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*aInstancePtr = nsnull; \
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return NS_ERROR_OUT_OF_MEMORY; \
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} \
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} else
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USING_INDEXEDDB_NAMESPACE
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namespace {
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template<class Class>
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inline
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nsIDOMEvent*
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idomevent_cast(Class* aClassPtr)
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{
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return static_cast<nsIDOMEvent*>(static_cast<nsDOMEvent*>(aClassPtr));
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}
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template<class Class>
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inline
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nsIDOMEvent*
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idomevent_cast(nsRefPtr<Class> aClassAutoPtr)
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{
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return idomevent_cast(aClassAutoPtr.get());
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}
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class EventFiringRunnable : public nsRunnable
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{
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public:
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EventFiringRunnable(nsIDOMEventTarget* aTarget,
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nsIDOMEvent* aEvent)
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: mTarget(aTarget), mEvent(aEvent)
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{ }
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NS_IMETHOD Run() {
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PRBool dummy;
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return mTarget->DispatchEvent(mEvent, &dummy);
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}
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private:
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nsCOMPtr<nsIDOMEventTarget> mTarget;
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nsCOMPtr<nsIDOMEvent> mEvent;
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};
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void
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GetMessageForErrorCode(PRUint16 aCode,
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nsAString& aMessage)
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{
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switch (aCode) {
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case nsIIDBDatabaseException::NON_TRANSIENT_ERR:
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aMessage.AssignLiteral("This error occurred because an operation was not "
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"allowed on an object. A retry of the same "
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"operation would fail unless the cause of the "
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"error is corrected.");
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break;
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case nsIIDBDatabaseException::NOT_FOUND_ERR:
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aMessage.AssignLiteral("The operation failed because the requested "
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"database object could not be found. For example, "
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"an object store did not exist but was being "
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"opened.");
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break;
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case nsIIDBDatabaseException::CONSTRAINT_ERR:
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aMessage.AssignLiteral("A mutation operation in the transaction failed "
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"due to a because a constraint was not satisfied. "
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"For example, an object such as an object store "
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"or index already exists and a new one was being "
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"attempted to be created.");
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break;
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case nsIIDBDatabaseException::DATA_ERR:
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aMessage.AssignLiteral("Data provided to an operation does not meet "
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"requirements.");
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break;
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case nsIIDBDatabaseException::NOT_ALLOWED_ERR:
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aMessage.AssignLiteral("A mutation operation was attempted on a database "
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"that did not allow mutations.");
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break;
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case nsIIDBDatabaseException::SERIAL_ERR:
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aMessage.AssignLiteral("The operation failed because of the size of the "
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"data set being returned or because there was a "
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"problem in serializing or deserializing the "
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"object being processed.");
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break;
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case nsIIDBDatabaseException::RECOVERABLE_ERR:
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aMessage.AssignLiteral("The operation failed because the database was "
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"prevented from taking an action. The operation "
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"might be able to succeed if the application "
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"performs some recovery steps and retries the "
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"entire transaction. For example, there was not "
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"enough remaining storage space, or the storage "
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"quota was reached and the user declined to give "
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"more space to the database.");
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break;
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case nsIIDBDatabaseException::TRANSIENT_ERR:
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aMessage.AssignLiteral("The operation failed because of some temporary "
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"problems. The failed operation might be able to "
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"succeed when the operation is retried without "
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"any intervention by application-level "
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"functionality.");
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break;
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case nsIIDBDatabaseException::TIMEOUT_ERR:
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aMessage.AssignLiteral("A lock for the transaction could not be obtained "
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"in a reasonable time.");
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break;
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case nsIIDBDatabaseException::DEADLOCK_ERR:
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aMessage.AssignLiteral("The current transaction was automatically rolled "
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"back by the database becuase of deadlock or "
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"other transaction serialization failures.");
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break;
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case nsIIDBDatabaseException::UNKNOWN_ERR:
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// Fall through.
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default:
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aMessage.AssignLiteral("The operation failed for reasons unrelated to "
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"the database itself and not covered by any other "
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"error code.");
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}
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}
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} // anonymous namespace
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// static
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already_AddRefed<nsIDOMEvent>
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IDBEvent::CreateGenericEvent(const nsAString& aType)
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{
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nsRefPtr<nsDOMEvent> event(new nsDOMEvent(nsnull, nsnull));
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nsresult rv = event->InitEvent(aType, PR_FALSE, PR_FALSE);
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NS_ENSURE_SUCCESS(rv, nsnull);
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rv = event->SetTrusted(PR_TRUE);
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NS_ENSURE_SUCCESS(rv, nsnull);
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nsDOMEvent* result;
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event.forget(&result);
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return result;
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}
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// static
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already_AddRefed<nsIRunnable>
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IDBEvent::CreateGenericEventRunnable(const nsAString& aType,
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nsIDOMEventTarget* aTarget)
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{
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nsCOMPtr<nsIDOMEvent> event(IDBEvent::CreateGenericEvent(aType));
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NS_ENSURE_TRUE(event, nsnull);
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nsCOMPtr<nsIRunnable> runnable(new EventFiringRunnable(aTarget, event));
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return runnable.forget();
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}
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NS_IMPL_ADDREF_INHERITED(IDBEvent, nsDOMEvent)
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NS_IMPL_RELEASE_INHERITED(IDBEvent, nsDOMEvent)
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NS_INTERFACE_MAP_BEGIN(IDBEvent)
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NS_INTERFACE_MAP_ENTRY(nsIIDBEvent)
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NS_INTERFACE_MAP_END_INHERITING(nsDOMEvent)
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NS_IMETHODIMP
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IDBEvent::GetSource(nsISupports** aSource)
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{
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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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// static
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already_AddRefed<nsIDOMEvent>
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IDBErrorEvent::Create(IDBRequest* aRequest,
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PRUint16 aCode)
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{
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nsRefPtr<IDBErrorEvent> event(new IDBErrorEvent());
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event->mSource = aRequest->GetGenerator();
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event->mCode = aCode;
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GetMessageForErrorCode(aCode, event->mMessage);
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nsresult rv = event->InitEvent(NS_LITERAL_STRING(ERROR_EVT_STR), PR_FALSE,
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PR_FALSE);
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NS_ENSURE_SUCCESS(rv, nsnull);
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rv = event->SetTrusted(PR_TRUE);
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NS_ENSURE_SUCCESS(rv, nsnull);
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IDBErrorEvent* result;
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event.forget(&result);
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return idomevent_cast(result);
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}
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// static
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already_AddRefed<nsIRunnable>
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IDBErrorEvent::CreateRunnable(IDBRequest* aRequest,
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PRUint16 aCode)
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{
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nsCOMPtr<nsIDOMEvent> event(IDBErrorEvent::Create(aRequest, aCode));
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NS_ENSURE_TRUE(event, nsnull);
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nsCOMPtr<nsIRunnable> runnable(new EventFiringRunnable(aRequest, event));
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return runnable.forget();
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}
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NS_IMPL_ADDREF_INHERITED(IDBErrorEvent, IDBEvent)
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NS_IMPL_RELEASE_INHERITED(IDBErrorEvent, IDBEvent)
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NS_INTERFACE_MAP_BEGIN(IDBErrorEvent)
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NS_INTERFACE_MAP_ENTRY(nsIIDBErrorEvent)
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NS_DOM_INTERFACE_MAP_ENTRY_CLASSINFO(IDBErrorEvent)
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NS_INTERFACE_MAP_END_INHERITING(IDBEvent)
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DOMCI_DATA(IDBErrorEvent, IDBErrorEvent)
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NS_IMETHODIMP
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IDBErrorEvent::GetCode(PRUint16* aCode)
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{
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*aCode = mCode;
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return NS_OK;
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}
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NS_IMETHODIMP
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IDBErrorEvent::SetCode(PRUint16 aCode)
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{
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mCode = aCode;
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return NS_OK;
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}
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NS_IMETHODIMP
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IDBErrorEvent::GetMessage(nsAString& aMessage)
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{
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aMessage.Assign(mMessage);
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return NS_OK;
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}
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NS_IMETHODIMP
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IDBErrorEvent::SetMessage(const nsAString& aMessage)
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{
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mMessage.Assign(aMessage);
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return NS_OK;
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}
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// static
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already_AddRefed<nsIDOMEvent>
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IDBSuccessEvent::Create(IDBRequest* aRequest,
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nsIVariant* aResult,
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nsIIDBTransactionRequest* aTransaction)
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{
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nsRefPtr<IDBSuccessEvent> event(new IDBSuccessEvent());
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event->mSource = aRequest->GetGenerator();
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event->mResult = aResult;
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event->mTransaction = aTransaction;
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nsresult rv = event->InitEvent(NS_LITERAL_STRING(SUCCESS_EVT_STR), PR_FALSE,
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PR_FALSE);
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NS_ENSURE_SUCCESS(rv, nsnull);
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rv = event->SetTrusted(PR_TRUE);
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NS_ENSURE_SUCCESS(rv, nsnull);
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IDBSuccessEvent* result;
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event.forget(&result);
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return idomevent_cast(result);
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}
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// static
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already_AddRefed<nsIRunnable>
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IDBSuccessEvent::CreateRunnable(IDBRequest* aRequest,
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nsIVariant* aResult,
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nsIIDBTransactionRequest* aTransaction)
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{
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nsCOMPtr<nsIDOMEvent> event =
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IDBSuccessEvent::Create(aRequest, aResult, aTransaction);
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NS_ENSURE_TRUE(event, nsnull);
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nsCOMPtr<nsIRunnable> runnable(new EventFiringRunnable(aRequest, event));
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return runnable.forget();
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}
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NS_IMPL_ADDREF_INHERITED(IDBSuccessEvent, IDBEvent)
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NS_IMPL_RELEASE_INHERITED(IDBSuccessEvent, IDBEvent)
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NS_INTERFACE_MAP_BEGIN(IDBSuccessEvent)
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NS_INTERFACE_MAP_ENTRY_CONDITIONAL(nsIIDBTransactionEvent, mTransaction)
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NS_DOM_INTERFACE_MAP_ENTRY_CLASSINFO_CONDITIONAL(IDBTransactionEvent,
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mTransaction)
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NS_INTERFACE_MAP_ENTRY(nsIIDBSuccessEvent)
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NS_DOM_INTERFACE_MAP_ENTRY_CLASSINFO(IDBSuccessEvent)
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NS_INTERFACE_MAP_END_INHERITING(IDBEvent)
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DOMCI_DATA(IDBSuccessEvent, IDBSuccessEvent)
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DOMCI_DATA(IDBTransactionEvent, IDBSuccessEvent)
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NS_IMETHODIMP
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IDBSuccessEvent::GetResult(nsIVariant** aResult)
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{
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nsCOMPtr<nsIVariant> result(mResult);
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result.forget(aResult);
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return NS_OK;
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}
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NS_IMETHODIMP
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IDBSuccessEvent::GetTransaction(nsIIDBTransactionRequest** aTransaction)
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{
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nsCOMPtr<nsIIDBTransactionRequest> transaction(mTransaction);
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transaction.forget(aTransaction);
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return NS_OK;
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}
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