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// Copyright 2014 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/frame_host/render_frame_proxy_host.h"
#include "content/browser/frame_host/cross_process_frame_connector.h"
#include "content/browser/frame_host/frame_tree.h"
#include "content/browser/frame_host/frame_tree_node.h"
#include "content/browser/frame_host/render_frame_host_impl.h"
#include "content/browser/frame_host/render_widget_host_view_child_frame.h"
#include "content/browser/renderer_host/render_view_host_impl.h"
#include "content/browser/renderer_host/render_widget_host_view_base.h"
#include "content/browser/site_instance_impl.h"
#include "content/common/frame_messages.h"
#include "ipc/ipc_message.h"
namespace content {
RenderFrameProxyHost::RenderFrameProxyHost(SiteInstance* site_instance,
FrameTreeNode* frame_tree_node)
: routing_id_(site_instance->GetProcess()->GetNextRoutingID()),
site_instance_(site_instance),
frame_tree_node_(frame_tree_node) {
GetProcess()->AddRoute(routing_id_, this);
if (!frame_tree_node_->IsMainFrame() &&
frame_tree_node_->parent()
->render_manager()
->current_frame_host()
->GetSiteInstance() == site_instance) {
// The RenderFrameHost navigating cross-process is destroyed and a proxy for
// it is created in the parent's process. CrossProcessFrameConnector
// initialization only needs to happen on an initial cross-process
// navigation, when the RenderFrameHost leaves the same process as its
// parent. The same CrossProcessFrameConnector is used for subsequent cross-
// process navigations, but it will be destroyed if the frame is
// navigated back to the same SiteInstance as its parent.
cross_process_frame_connector_.reset(new CrossProcessFrameConnector(this));
}
}
RenderFrameProxyHost::~RenderFrameProxyHost() {
if (GetProcess()->HasConnection())
Send(new FrameMsg_DeleteProxy(routing_id_));
GetProcess()->RemoveRoute(routing_id_);
}
void RenderFrameProxyHost::SetChildRWHView(RenderWidgetHostView* view) {
cross_process_frame_connector_->set_view(
static_cast<RenderWidgetHostViewChildFrame*>(view));
}
RenderViewHostImpl* RenderFrameProxyHost::GetRenderViewHost() {
if (render_frame_host_.get())
return render_frame_host_->render_view_host();
return NULL;
}
scoped_ptr<RenderFrameHostImpl> RenderFrameProxyHost::PassFrameHostOwnership() {
render_frame_host_->set_render_frame_proxy_host(NULL);
return render_frame_host_.Pass();
}
bool RenderFrameProxyHost::Send(IPC::Message *msg) {
// TODO(nasko): For now, RenderFrameHost uses this object to send IPC messages
// while swapped out. This can be removed once we don't have a swapped out
// state on RenderFrameHosts. See https://crbug.com/357747.
msg->set_routing_id(routing_id_);
return GetProcess()->Send(msg);
}
bool RenderFrameProxyHost::OnMessageReceived(const IPC::Message& msg) {
if (cross_process_frame_connector_.get() &&
cross_process_frame_connector_->OnMessageReceived(msg))
return true;
// TODO(nasko): This can be removed once we don't have a swapped out state on
// RenderFrameHosts. See https://crbug.com/357747.
if (render_frame_host_.get())
return render_frame_host_->OnMessageReceived(msg);
return false;
}
bool RenderFrameProxyHost::InitRenderFrameProxy() {
// The process may (if we're sharing a process with another host that already
// initialized it) or may not (we have our own process or the old process
// crashed) have been initialized. Calling Init multiple times will be
// ignored, so this is safe.
if (!site_instance_->GetProcess()->Init())
return false;
DCHECK(GetProcess()->HasConnection());
int parent_routing_id = MSG_ROUTING_NONE;
if (frame_tree_node_->parent()) {
parent_routing_id = frame_tree_node_->parent()->render_manager()->
GetRoutingIdForSiteInstance(site_instance_);
CHECK_NE(parent_routing_id, MSG_ROUTING_NONE);
}
Send(new FrameMsg_NewFrameProxy(
routing_id_,
parent_routing_id,
frame_tree_node_->frame_tree()->GetRenderViewHost(
site_instance_)->GetRoutingID()));
return true;
}
} // namespace content
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