Implemented Browser Plugin (NOT FOR REVIEW)

content/renderer/guest_render_view_observer.cc

+// 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/renderer/guest_render_view_observer.h"
+
+#include "base/process_util.h"
+#include "content/common/child_process.h"
+#include "content/common/view_messages.h"
+#include "content/public/renderer/render_view.h"
+#include "content/renderer/plugins/browser_plugin_placeholder.h"
+#include "content/renderer/render_view_impl.h"
+#include "ppapi/proxy/ppapi_messages.h"
+#include "third_party/WebKit/Source/WebKit/chromium/public/WebView.h"
+
+using WebKit::WebGraphicsContext3D;
+
+GuestRenderViewObserver::GuestRenderViewObserver(
+    content::RenderView* render_view)
+    : RenderViewObserver(render_view),
+    guest_to_host_channel_(this, render_view->GetWebView()) {
+}
+
+bool GuestRenderViewObserver::OnMessageReceived(const IPC::Message& message) {
+  bool handled = true;
+  IPC_BEGIN_MESSAGE_MAP(GuestRenderViewObserver, message)
+    IPC_MESSAGE_HANDLER(PpapiMsg_CreateChannel, OnMsgCreateChannel)
+    IPC_MESSAGE_HANDLER(ViewMsg_GuestReady, OnMsgGuestReady)
+    IPC_MESSAGE_UNHANDLED(handled = false)
+  IPC_END_MESSAGE_MAP()
+
+  return handled;
+}
+
+void GuestRenderViewObserver::OnMsgCreateChannel(
+    base::ProcessHandle host_process_handle,
+    int renderer_id) {
+  IPC::ChannelHandle plugin_handle;
+  plugin_handle.name = StringPrintf("%d.r%d", base::GetCurrentProcId(),
+                                    renderer_id);
+  bool success = guest_to_host_channel_.InitChannel(plugin_handle);
+#if defined(OS_POSIX)
+  // On POSIX, transfer ownership of the renderer-side (client) FD.
+  // This ensures this process will be notified when it is closed even if a
+  // connection is not established.
+  plugin_handle.socket =
+      base::FileDescriptor(guest_to_host_channel_.TakeRendererFD(), true);
+  // Check the validity of fd for bug investigation. Remove after fixed.
+  // See for details: crbug.com/103957.
+  CHECK_NE(-1, plugin_handle.socket.fd);
+  if (plugin_handle.socket.fd == -1)
+    success = false;
+#endif
+  PpapiHostMsg_ChannelCreated* msg;
+  if (success)
+    msg = new PpapiHostMsg_ChannelCreated(plugin_handle);
+  else
+    msg = new PpapiHostMsg_ChannelCreated(IPC::ChannelHandle());
+  msg->set_routing_id(routing_id());
+  Send(msg);
+}
+
+void GuestRenderViewObserver::OnMsgGuestReady(
+    int instance_id,
+    base::ProcessHandle process_handle,
+    const IPC::ChannelHandle& channel_handle) {
+  BrowserPluginPlaceholder* placeholder =
+      BrowserPluginPlaceholder::FromID(instance_id);
+  if (placeholder)
+      placeholder->GuestReady(process_handle, channel_handle);
+}
+
+WebGraphicsContext3D* GuestRenderViewObserver::GetWebGraphicsContext3D() {
+  return guest_to_host_channel_.GetWebGraphicsContext3D();
+}
+
+void GuestRenderViewObserver::GraphicsContextCreated() {
+  gfx::Size size(guest_to_host_channel_.width(),
+                 guest_to_host_channel_.height());
+  gfx::Rect rect(size);
+
+  DCHECK(render_view()->GetWebView()->graphicsContext3D());
+  // Tell the existing WebGraphicsContext3D to fake a
+  // lost context.
+  render_view()->GetWebView()->graphicsContext3D()->playDead();
+  // By forcing a new layout and composite, we force WebKit
+  // to pick up a new WebGraphicsContext3D. In this case, it will
+  // grab a WebGraphicsContext3DGuest.
+  render_view()->GetWebView()->layout();
+  render_view()->GetWebView()->composite(true);
+}