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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/loader/resource_dispatcher_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>::DestructorAtExit 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_(nullptr) {}
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::BindOnce(&AddWidgetHelper, render_process_id_,
base::WrapRefCounted(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::CreateNewWidget(int opener_id,
blink::WebPopupType popup_type,
mojom::WidgetPtr widget,
int* route_id) {
*route_id = GetNextRoutingID();
BrowserThread::PostTask(
BrowserThread::UI, FROM_HERE,
base::BindOnce(&RenderWidgetHelper::OnCreateWidgetOnUI, this, opener_id,
*route_id, widget.PassInterface(), popup_type));
}
void RenderWidgetHelper::CreateNewFullscreenWidget(int opener_id,
mojom::WidgetPtr widget,
int* route_id) {
*route_id = GetNextRoutingID();
BrowserThread::PostTask(
BrowserThread::UI, FROM_HERE,
base::BindOnce(&RenderWidgetHelper::OnCreateFullscreenWidgetOnUI, this,
opener_id, *route_id, widget.PassInterface()));
}
void RenderWidgetHelper::OnCreateWidgetOnUI(int32_t opener_id,
int32_t route_id,
mojom::WidgetPtrInfo widget_info,
blink::WebPopupType popup_type) {
mojom::WidgetPtr widget;
widget.Bind(std::move(widget_info));
RenderViewHostImpl* host = RenderViewHostImpl::FromID(
render_process_id_, opener_id);
if (host)
host->CreateNewWidget(route_id, std::move(widget), popup_type);
}
void RenderWidgetHelper::OnCreateFullscreenWidgetOnUI(
int32_t opener_id,
int32_t route_id,
mojom::WidgetPtrInfo widget_info) {
mojom::WidgetPtr widget;
widget.Bind(std::move(widget_info));
RenderViewHostImpl* host = RenderViewHostImpl::FromID(
render_process_id_, opener_id);
if (host)
host->CreateNewFullscreenWidget(route_id, std::move(widget));
}
} // namespace content
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