Browser Plugin: New Implementation (Browser Side)

content/browser/browser_plugin/browser_plugin_host_helper.h

+// 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_BROWSER_PLUGIN_BROWSER_PLUGIN_HOST_HELPER_H__
+#define CONTENT_BROWSER_BROWSER_PLUGIN_BROWSER_PLUGIN_HOST_HELPER_H__
+
+#include <string>
+
+#include "base/compiler_specific.h"
+#include "content/public/browser/render_view_host_observer.h"
+#include "ipc/ipc_channel_handle.h"
+#include "ipc/ipc_sync_message.h"
+#include "third_party/WebKit/Source/WebKit/chromium/public/WebInputEvent.h"
+#include "ui/surface/transport_dib.h"
+#include "webkit/glue/webcursor.h"
+
+namespace gfx {
+class Size;
+}
+
+struct BrowserPluginHostMsg_ResizeGuest_Params;
+struct ViewHostMsg_UpdateRect_Params;
+
+namespace content {
+
+class BrowserPluginHost;
+
+// This class acts as a plumber helper for BrowserPluginHost. A lot

[Charlie Reis, 2012/08/13 17:50:14]

I'm not entirely clear why this is its own class.  Is this an artifact of using
BrowserPluginHost for both embedders and guests?

+// of messages coming from guests need to know the guest's RenderViewHost.
+// BrowserPluginHostHelper handles BrowserPluginHost messages and relays
+// them with their associated RenderViewHosts to BrowserPluginHost where they
+// will be handled.
+class BrowserPluginHostHelper : public RenderViewHostObserver {
+ public:
+  BrowserPluginHostHelper(BrowserPluginHost* browser_plugin_host,
+                          RenderViewHost* render_view_host);
+  virtual ~BrowserPluginHostHelper();
+
+  // Make it public for sync IPCs.

[Charlie Reis, 2012/08/13 17:50:14]

Which ones are synchronous?

+  virtual bool Send(IPC::Message* message) OVERRIDE;
+ private:
+  void OnNavigateOrCreateGuest(int instance_id,
+                                   long long frame_id,

[Charlie Reis, 2012/08/13 17:50:14]

nit: Wrong indent.

+                                   const std::string& src,
+                                   const gfx::Size& size);
+  void OnResizeGuest(int instance_id,
+                     const BrowserPluginHostMsg_ResizeGuest_Params& params);
+  void OnUpdateRectACK(int instance_id,
+                       int message_id,
+                       const gfx::Size& size);
+  void OnHandleInputEvent(const IPC::SyncMessage& message, bool* handled);
+  void OnSetFocus(int instance_id, bool focused);
+  void OnPluginDestroyed(int instance_id);
+
+  // Intercepted from the guest renderer process.
+  void OnUpdateRect(const ViewHostMsg_UpdateRect_Params& params);
+  void OnHandleInputEventAck(WebKit::WebInputEvent::Type event_type,
+                             bool processed);
+  void OnTakeFocus(bool reverse);
+  void OnShowWidget(int route_id, const gfx::Rect& initial_pos);
+  void OnSetCursor(const WebCursor& cursor);
+
+  // RenderViewHostObserver implementation.
+  virtual bool OnMessageReceived(const IPC::Message& message) OVERRIDE;
+
+  BrowserPluginHost* browser_plugin_host_;
+
+  DISALLOW_COPY_AND_ASSIGN(BrowserPluginHostHelper);
+};
+
+

[Charlie Reis, 2012/08/13 17:50:14]

nit: Extra space.

+}  // namespace content
+
+#endif  // CONTENT_BROWSER_BROWSER_PLUGIN_OLD_BROWSER_PLUGIN_HOST_HELPER_H__
+