Source/WebKit/chromium/src/DatabaseObserver.cpp

/*
 * Copyright (C) 2010 Google Inc. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are
 * met:
 *
 *     * Redistributions of source code must retain the above copyright
 * notice, this list of conditions and the following disclaimer.
 *     * Redistributions in binary form must reproduce the above
 * copyright notice, this list of conditions and the following disclaimer
 * in the documentation and/or other materials provided with the
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 * this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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#include "config.h"
#include "DatabaseObserver.h"

#if ENABLE(DATABASE)

#include "AbstractDatabase.h"
#include "Document.h"
#include "ScriptExecutionContext.h"
#include "WebDatabase.h"
#include "WebDatabaseObserver.h"
#include "WebFrameClient.h"
#include "WebFrameImpl.h"
#include "WebSecurityOrigin.h"
#include "WebWorkerImpl.h"
#include "WorkerContext.h"
#include "WorkerThread.h"

using namespace WebKit;

namespace WebCore {

bool DatabaseObserver::canEstablishDatabase(ScriptExecutionContext* scriptExecutionContext, const String& name, const String& displayName, unsigned long estimatedSize)
{
    ASSERT(scriptExecutionContext->isContextThread());
    ASSERT(scriptExecutionContext->isDocument() || scriptExecutionContext->isWorkerContext());
    if (scriptExecutionContext->isDocument()) {
        Document* document = static_cast<Document*>(scriptExecutionContext);
        WebFrameImpl* webFrame = WebFrameImpl::fromFrame(document->frame());
        return webFrame->client()->allowDatabase(webFrame, name, displayName, estimatedSize);
    } else {
        WorkerContext* workerContext = static_cast<WorkerContext*>(scriptExecutionContext);
        WorkerLoaderProxy* workerLoaderProxy = &workerContext->thread()->workerLoaderProxy();
        WebWorkerBase* webWorker = static_cast<WebWorkerBase*>(workerLoaderProxy);
        return webWorker->allowDatabase(0, name, displayName, estimatedSize);
    }

    return true;
}

void DatabaseObserver::databaseOpened(AbstractDatabase* database)
{
    ASSERT(database->scriptExecutionContext()->isContextThread());
    WebDatabase::observer()->databaseOpened(WebDatabase(database));
}

void DatabaseObserver::databaseModified(AbstractDatabase* database)
{
    ASSERT(database->scriptExecutionContext()->isContextThread());
    WebDatabase::observer()->databaseModified(WebDatabase(database));
}

void DatabaseObserver::databaseClosed(AbstractDatabase* database)
{
    ASSERT(database->scriptExecutionContext()->isContextThread());
    WebDatabase::observer()->databaseClosed(WebDatabase(database));
}

} // namespace WebCore

#endif // ENABLE(DATABASE)