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// Copyright (c) 2012 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.
#include "content/browser/renderer_host/render_view_host_factory.h"
#include <memory>
#include "base/logging.h"
#include "base/memory/ptr_util.h"
#include "content/browser/renderer_host/render_view_host_impl.h"
#include "content/browser/renderer_host/render_widget_host_factory.h"
namespace content {
// static
RenderViewHostFactory* RenderViewHostFactory::factory_ = nullptr;
// static
bool RenderViewHostFactory::is_real_render_view_host_ = false;
// static
RenderViewHost* RenderViewHostFactory::Create(
SiteInstance* instance,
RenderViewHostDelegate* delegate,
RenderWidgetHostDelegate* widget_delegate,
int32_t routing_id,
int32_t main_frame_routing_id,
int32_t widget_routing_id,
bool swapped_out,
bool hidden) {
// RenderViewHost creation can be either browser-driven (by the user opening a
// new tab) or renderer-driven (by script calling window.open, etc).
//
// In the browser-driven case, the routing ID of the view is lazily assigned:
// this is signified by passing MSG_ROUTING_NONE for |routing_id|.
if (routing_id == MSG_ROUTING_NONE) {
DCHECK_EQ(widget_routing_id, MSG_ROUTING_NONE);
routing_id = instance->GetProcess()->GetNextRoutingID();
widget_routing_id = instance->GetProcess()->GetNextRoutingID();
} else {
// Otherwise, in the renderer-driven case, the routing ID of the view is
// already set. This is due to the fact that a sync render->browser IPC is
// involved. In order to quickly reply to the sync IPC, the routing IDs are
// assigned as early as possible. The IO thread immediately sends a reply to
// the sync IPC, while deferring the creation of the actual Host objects to
// the UI thread.
}
if (factory_) {
return factory_->CreateRenderViewHost(instance, delegate, widget_delegate,
routing_id, main_frame_routing_id,
widget_routing_id, swapped_out);
}
return new RenderViewHostImpl(
instance,
base::WrapUnique(RenderWidgetHostFactory::Create(
widget_delegate, instance->GetProcess(), widget_routing_id, nullptr,
hidden)),
delegate, routing_id, main_frame_routing_id, swapped_out,
true /* has_initialized_audio_host */);
}
// static
void RenderViewHostFactory::RegisterFactory(RenderViewHostFactory* factory) {
DCHECK(!factory_) << "Can't register two factories at once.";
factory_ = factory;
}
// static
void RenderViewHostFactory::UnregisterFactory() {
DCHECK(factory_) << "No factory to unregister.";
factory_ = nullptr;
}
} // namespace content
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