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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_widget_helper.h"
#include "base/bind.h"
#include "base/bind_helpers.h"
#include "base/lazy_instance.h"
#include "base/posix/eintr_wrapper.h"
#include "base/threading/thread.h"
#include "base/threading/thread_restrictions.h"
#include "content/browser/dom_storage/session_storage_namespace_impl.h"
#include "content/browser/loader/resource_dispatcher_host_impl.h"
#include "content/browser/renderer_host/render_process_host_impl.h"
#include "content/browser/renderer_host/render_view_host_impl.h"
#include "content/common/view_messages.h"
namespace content {
namespace {
typedef std::map<int, RenderWidgetHelper*> WidgetHelperMap;
base::LazyInstance<WidgetHelperMap> g_widget_helpers =
LAZY_INSTANCE_INITIALIZER;
void AddWidgetHelper(int render_process_id,
const scoped_refptr<RenderWidgetHelper>& widget_helper) {
DCHECK_CURRENTLY_ON(BrowserThread::IO);
// We don't care if RenderWidgetHelpers overwrite an existing process_id. Just
// want this to be up to date.
g_widget_helpers.Get()[render_process_id] = widget_helper.get();
}
} // namespace
RenderWidgetHelper::RenderWidgetHelper()
: render_process_id_(-1),
resource_dispatcher_host_(NULL) {
}
RenderWidgetHelper::~RenderWidgetHelper() {
DCHECK_CURRENTLY_ON(BrowserThread::IO);
// Delete this RWH from the map if it is found.
WidgetHelperMap& widget_map = g_widget_helpers.Get();
WidgetHelperMap::iterator it = widget_map.find(render_process_id_);
if (it != widget_map.end() && it->second == this)
widget_map.erase(it);
}
void RenderWidgetHelper::Init(
int render_process_id,
ResourceDispatcherHostImpl* resource_dispatcher_host) {
render_process_id_ = render_process_id;
resource_dispatcher_host_ = resource_dispatcher_host;
BrowserThread::PostTask(
BrowserThread::IO, FROM_HERE,
base::Bind(&AddWidgetHelper,
render_process_id_, make_scoped_refptr(this)));
}
int RenderWidgetHelper::GetNextRoutingID() {
return next_routing_id_.GetNext() + 1;
}
// static
RenderWidgetHelper* RenderWidgetHelper::FromProcessHostID(
int render_process_host_id) {
DCHECK_CURRENTLY_ON(BrowserThread::IO);
WidgetHelperMap::const_iterator ci = g_widget_helpers.Get().find(
render_process_host_id);
return (ci == g_widget_helpers.Get().end())? NULL : ci->second;
}
void RenderWidgetHelper::ResumeDeferredNavigation(
const GlobalRequestID& request_id) {
BrowserThread::PostTask(
BrowserThread::IO, FROM_HERE,
base::Bind(&RenderWidgetHelper::OnResumeDeferredNavigation,
this,
request_id));
}
void RenderWidgetHelper::OnResumeDeferredNavigation(
const GlobalRequestID& request_id) {
resource_dispatcher_host_->ResumeDeferredNavigation(request_id);
}
void RenderWidgetHelper::CreateNewWindow(
const ViewHostMsg_CreateWindow_Params& params,
bool no_javascript_access,
base::ProcessHandle render_process,
int32_t* route_id,
int32_t* main_frame_route_id,
int32_t* main_frame_widget_route_id,
SessionStorageNamespace* session_storage_namespace) {
if (params.opener_suppressed || no_javascript_access) {
// If the opener is supppressed or script access is disallowed, we should
// open the window in a new BrowsingInstance, and thus a new process. That
// means the current renderer process will not be able to route messages to
// it. Because of this, we will immediately show and navigate the window
// in OnCreateWindowOnUI, using the params provided here.
*route_id = MSG_ROUTING_NONE;
*main_frame_route_id = MSG_ROUTING_NONE;
*main_frame_widget_route_id = MSG_ROUTING_NONE;
} else {
*route_id = GetNextRoutingID();
*main_frame_route_id = GetNextRoutingID();
// TODO(avi): When RenderViewHostImpl has-a RenderWidgetHostImpl, this
// should be updated to give the widget a distinct routing ID.
// https://crbug.com/545684
*main_frame_widget_route_id = *route_id;
// Block resource requests until the frame is created, since the HWND might
// be needed if a response ends up creating a plugin. We'll only have a
// single frame at this point. These requests will be resumed either in
// WebContentsImpl::CreateNewWindow or RenderFrameHost::Init.
resource_dispatcher_host_->BlockRequestsForRoute(
GlobalFrameRoutingId(render_process_id_, *main_frame_route_id));
}
BrowserThread::PostTask(
BrowserThread::UI, FROM_HERE,
base::Bind(&RenderWidgetHelper::OnCreateWindowOnUI, this, params,
*route_id, *main_frame_route_id, *main_frame_widget_route_id,
make_scoped_refptr(session_storage_namespace)));
}
void RenderWidgetHelper::OnCreateWindowOnUI(
const ViewHostMsg_CreateWindow_Params& params,
int32_t route_id,
int32_t main_frame_route_id,
int32_t main_frame_widget_route_id,
SessionStorageNamespace* session_storage_namespace) {
RenderViewHostImpl* host =
RenderViewHostImpl::FromID(render_process_id_, params.opener_id);
if (host)
host->CreateNewWindow(route_id, main_frame_route_id,
main_frame_widget_route_id, params,
session_storage_namespace);
}
void RenderWidgetHelper::CreateNewWidget(int opener_id,
blink::WebPopupType popup_type,
int* route_id) {
*route_id = GetNextRoutingID();
BrowserThread::PostTask(BrowserThread::UI, FROM_HERE,
base::Bind(&RenderWidgetHelper::OnCreateWidgetOnUI,
this, opener_id, *route_id, popup_type));
}
void RenderWidgetHelper::CreateNewFullscreenWidget(int opener_id,
int* route_id) {
*route_id = GetNextRoutingID();
BrowserThread::PostTask(
BrowserThread::UI, FROM_HERE,
base::Bind(&RenderWidgetHelper::OnCreateFullscreenWidgetOnUI, this,
opener_id, *route_id));
}
void RenderWidgetHelper::OnCreateWidgetOnUI(int32_t opener_id,
int32_t route_id,
blink::WebPopupType popup_type) {
RenderViewHostImpl* host = RenderViewHostImpl::FromID(
render_process_id_, opener_id);
if (host)
host->CreateNewWidget(route_id, popup_type);
}
void RenderWidgetHelper::OnCreateFullscreenWidgetOnUI(int32_t opener_id,
int32_t route_id) {
RenderViewHostImpl* host = RenderViewHostImpl::FromID(
render_process_id_, opener_id);
if (host)
host->CreateNewFullscreenWidget(route_id);
}
} // namespace content
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