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// Copyright (c) 2011 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef CONTENT_BROWSER_RENDERER_HOST_RENDER_VIEW_HOST_FACTORY_H_
#define CONTENT_BROWSER_RENDERER_HOST_RENDER_VIEW_HOST_FACTORY_H_
#pragma once
#include "base/basictypes.h"
#include "content/common/content_export.h"
class RenderViewHost;
class RenderViewHostDelegate;
class SessionStorageNamespace;
class SiteInstance;
namespace base {
class WaitableEvent;
} // namespace base
// A factory for creating RenderViewHosts. There is a global factory function
// that can be installed for the purposes of testing to provide a specialized
// RenderViewHost class.
class RenderViewHostFactory {
public:
// Creates a RenderViewHost using the currently registered factory, or the
// default one if no factory is registered. Ownership of the returned
// pointer will be passed to the caller.
static RenderViewHost* Create(SiteInstance* instance,
RenderViewHostDelegate* delegate,
int routing_id,
SessionStorageNamespace* session_storage);
// Returns true if there is currently a globally-registered factory.
static bool has_factory() {
return !!factory_;
}
protected:
RenderViewHostFactory() {}
virtual ~RenderViewHostFactory() {}
// You can derive from this class and specify an implementation for this
// function to create a different kind of RenderViewHost for testing.
virtual RenderViewHost* CreateRenderViewHost(
SiteInstance* instance,
RenderViewHostDelegate* delegate,
int routing_id,
SessionStorageNamespace* session_storage_namespace) = 0;
// Registers your factory to be called when new RenderViewHosts are created.
// We have only one global factory, so there must be no factory registered
// before the call. This class does NOT take ownership of the pointer.
CONTENT_EXPORT static void RegisterFactory(RenderViewHostFactory* factory);
// Unregister the previously registered factory. With no factory registered,
// the default RenderViewHosts will be created.
CONTENT_EXPORT static void UnregisterFactory();
private:
// The current globally registered factory. This is NULL when we should
// create the default RenderViewHosts.
CONTENT_EXPORT static RenderViewHostFactory* factory_;
DISALLOW_COPY_AND_ASSIGN(RenderViewHostFactory);
};
#endif // CONTENT_BROWSER_RENDERER_HOST_RENDER_VIEW_HOST_FACTORY_H_
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