| // 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/task/post_task.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" |
| #include "content/public/browser/browser_task_traits.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(); |
| auto 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; |
| |
| base::PostTaskWithTraits(FROM_HERE, {BrowserThread::IO}, |
| 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, |
| mojom::WidgetPtr widget, |
| int* route_id) { |
| *route_id = GetNextRoutingID(); |
| |
| base::PostTaskWithTraits( |
| FROM_HERE, {BrowserThread::UI}, |
| base::BindOnce(&RenderWidgetHelper::OnCreateWidgetOnUI, this, opener_id, |
| *route_id, widget.PassInterface())); |
| } |
| |
| void RenderWidgetHelper::CreateNewFullscreenWidget(int opener_id, |
| mojom::WidgetPtr widget, |
| int* route_id) { |
| *route_id = GetNextRoutingID(); |
| base::PostTaskWithTraits( |
| FROM_HERE, {BrowserThread::UI}, |
| 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) { |
| 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)); |
| } |
| |
| 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 |