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// Copyright 2013 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_FRAME_HOST_RENDER_FRAME_HOST_FACTORY_H_
#define CONTENT_BROWSER_FRAME_HOST_RENDER_FRAME_HOST_FACTORY_H_
#include <stdint.h>
#include <memory>
#include "base/macros.h"
#include "base/memory/scoped_refptr.h"
#include "content/common/content_export.h"
namespace content {
class FrameTree;
class FrameTreeNode;
class RenderFrameHostDelegate;
class RenderFrameHostImpl;
class RenderViewHostImpl;
class SiteInstance;
// A factory for creating RenderFrameHosts. There is a global factory function
// that can be installed for the purposes of testing to provide a specialized
// RenderFrameHostImpl class.
class CONTENT_EXPORT RenderFrameHostFactory {
public:
// Creates a new RenderFrameHostImpl using the currently registered factory,
// or a regular RenderFrameHostImpl if no factory is registered.
static std::unique_ptr<RenderFrameHostImpl> Create(
SiteInstance* site_instance,
scoped_refptr<RenderViewHostImpl> render_view_host,
RenderFrameHostDelegate* delegate,
FrameTree* frame_tree,
FrameTreeNode* frame_tree_node,
int32_t routing_id,
int32_t widget_routing_id,
bool renderer_initiated_creation);
// Returns true if there is currently a globally-registered factory.
static bool has_factory() { return !!factory_; }
protected:
RenderFrameHostFactory() {}
virtual ~RenderFrameHostFactory() {}
// You can derive from this class and specify an implementation for this
// function to create an alternate kind of RenderFrameHostImpl for testing.
virtual std::unique_ptr<RenderFrameHostImpl> CreateRenderFrameHost(
SiteInstance* site_instance,
scoped_refptr<RenderViewHostImpl> render_view_host,
RenderFrameHostDelegate* delegate,
FrameTree* frame_tree,
FrameTreeNode* frame_tree_node,
int32_t routing_id,
int32_t widget_routing_id,
bool renderer_initiated_creation) = 0;
// Registers a factory to be called when new RenderFrameHostImpls 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.
static void RegisterFactory(RenderFrameHostFactory* factory);
// Unregister the previously registered factory. With no factory registered,
// regular RenderFrameHostImpls will be created.
static void UnregisterFactory();
private:
// The current globally registered factory. This is NULL when we should create
// regular RenderFrameHostImpls.
static RenderFrameHostFactory* factory_;
DISALLOW_COPY_AND_ASSIGN(RenderFrameHostFactory);
};
} // namespace content
#endif // CONTENT_BROWSER_FRAME_HOST_RENDER_FRAME_HOST_FACTORY_H_