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/*
* Copyright (C) 2009 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
* distribution.
* * Neither the name of Google Inc. nor the names of its
* contributors may be used to endorse or promote products derived from
* 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
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef DOMWrapperWorld_h
#define DOMWrapperWorld_h
#include "DOMDataStore.h"
#include <wtf/PassRefPtr.h>
#include <wtf/RefCounted.h>
#include <wtf/RefPtr.h>
namespace WebCore {
// This class represent a collection of DOM wrappers for a specific world.
class DOMWrapperWorld : public WTF::RefCountedBase {
public:
static const int mainWorldId = 0;
static const int mainWorldExtensionGroup = 0;
static const int uninitializedWorldId = -1;
static const int uninitializedExtensionGroup = -1;
// If 0 is passed as worldId, the world will be assigned a temporary id instead.
static PassRefPtr<DOMWrapperWorld> ensureIsolatedWorld(int worldId, int extensionGroup);
static bool isolatedWorldsExist() { return isolatedWorldCount; }
// FIXME: this is a workaround for a problem in WebViewImpl.
// Do not use this anywhere else!!
static PassRefPtr<DOMWrapperWorld> createUninitializedWorld();
bool isMainWorld() { return m_worldId == mainWorldId; }
int worldId() const { return m_worldId; }
int extensionGroup() const { return m_extensionGroup; }
DOMDataStore* domDataStore() const
{
ASSERT(m_worldId != uninitializedWorldId);
return m_domDataStore.getStore();
}
void deref()
{
if (derefBase())
deallocate(this);
}
private:
static int isolatedWorldCount;
static PassRefPtr<DOMWrapperWorld> createMainWorld();
static void deallocate(DOMWrapperWorld*);
DOMWrapperWorld(int worldId, int extensionGroup)
: m_worldId(worldId)
, m_extensionGroup(extensionGroup)
, m_domDataStore(worldId != uninitializedWorldId)
{
}
const int m_worldId;
const int m_extensionGroup;
// The backing store for the isolated world's DOM wrappers. This class
// doesn't have visibility into the wrappers. This handle simply helps
// manage their lifetime.
DOMDataStoreHandle m_domDataStore;
friend DOMWrapperWorld* mainThreadNormalWorld();
};
DOMWrapperWorld* mainThreadNormalWorld();
} // namespace WebCore
#endif // DOMWrapperWorld_h
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