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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.
#ifndef CONTENT_BROWSER_RENDERER_HOST_RENDER_WIDGET_HELPER_H_
#define CONTENT_BROWSER_RENDERER_HOST_RENDER_WIDGET_HELPER_H_
#include <stdint.h>
#include <map>
#include "base/atomic_sequence_num.h"
#include "base/containers/hash_tables.h"
#include "base/macros.h"
#include "base/memory/ref_counted.h"
#include "base/process/process.h"
#include "content/common/render_message_filter.mojom.h"
#include "content/public/browser/browser_thread.h"
#include "content/public/browser/content_browser_client.h"
#include "content/public/browser/global_request_id.h"
#include "third_party/blink/public/web/web_popup_type.h"
#include "ui/gfx/native_widget_types.h"
namespace content {
class ResourceDispatcherHostImpl;
// Instantiated per RenderProcessHost to provide various optimizations on
// behalf of a RenderWidgetHost. This class bridges between the IO thread
// where the RenderProcessHost's MessageFilter lives and the UI thread where
// the RenderWidgetHost lives.
class RenderWidgetHelper
: public base::RefCountedThreadSafe<RenderWidgetHelper,
BrowserThread::DeleteOnIOThread> {
public:
RenderWidgetHelper();
void Init(int render_process_id,
ResourceDispatcherHostImpl* resource_dispatcher_host);
// Gets the next available routing id. This is thread safe.
int GetNextRoutingID();
// IO THREAD ONLY -----------------------------------------------------------
// Lookup the RenderWidgetHelper from the render_process_host_id. Returns NULL
// if not found. NOTE: The raw pointer is for temporary use only. To retain,
// store in a scoped_refptr.
static RenderWidgetHelper* FromProcessHostID(int render_process_host_id);
// IO THREAD ONLY -----------------------------------------------------------
void CreateNewWidget(int opener_id,
blink::WebPopupType popup_type,
mojom::WidgetPtr,
int* route_id);
void CreateNewFullscreenWidget(int opener_id,
mojom::WidgetPtr,
int* route_id);
private:
friend class base::RefCountedThreadSafe<RenderWidgetHelper>;
friend struct BrowserThread::DeleteOnThread<BrowserThread::IO>;
friend class base::DeleteHelper<RenderWidgetHelper>;
~RenderWidgetHelper();
// Called on the UI thread to finish creating a widget.
void OnCreateWidgetOnUI(int32_t opener_id,
int32_t route_id,
mojom::WidgetPtrInfo widget,
blink::WebPopupType popup_type);
// Called on the UI thread to create a fullscreen widget.
void OnCreateFullscreenWidgetOnUI(int32_t opener_id,
int32_t route_id,
mojom::WidgetPtrInfo widget);
int render_process_id_;
// The next routing id to use.
base::AtomicSequenceNumber next_routing_id_;
ResourceDispatcherHostImpl* resource_dispatcher_host_;
DISALLOW_COPY_AND_ASSIGN(RenderWidgetHelper);
};
} // namespace content
#endif // CONTENT_BROWSER_RENDERER_HOST_RENDER_WIDGET_HELPER_H_
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