Browser Plugin: Renderer-side changes

content/renderer/browser_plugin/browser_plugin_channel_manager.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/browser_plugin/browser_plugin_channel_manager.h"
+
+#include "base/process_util.h"
+#include "content/common/browser_plugin_messages.h"
+#include "content/common/view_messages.h"
+#include "content/renderer/browser_plugin/browser_plugin.h"
+#include "content/renderer/browser_plugin/guest_to_embedder_channel.h"
+#include "content/renderer/render_thread_impl.h"
+#include "content/renderer/render_view_impl.h"
+#include "ppapi/c/pp_instance.h"
+
+namespace content {
+
+BrowserPluginChannelManager::BrowserPluginChannelManager() {
+}
+
+void BrowserPluginChannelManager::CreateRenderView(
+    const ViewMsg_New_Params& params) {
+  IPC::ChannelHandle plugin_handle;
+  plugin_handle.name =
+      IPC::Channel::GenerateVerifiedChannelID(params.embedder_channel_name);
+  bool success = true;
+  scoped_refptr<GuestToEmbedderChannel> channel =
+      GetChannelByName(params.embedder_channel_name);
+  if (!channel) {
+    channel = new GuestToEmbedderChannel(params.embedder_channel_name);
+    success = 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(channel->TakeRendererFD(), true);
+    if (plugin_handle.socket.fd == -1)
+      success = false;
+#endif
+    DCHECK(success);
+    embedder_channels_[params.embedder_channel_name] = channel;
+  }
+  DCHECK(pending_navigations_.find(params.view_id) ==
+         pending_navigations_.end());
+  pending_navigations_[params.view_id] =
+    RenderViewImpl::Create(
+        params.parent_window,
+        params.opener_route_id,
+        params.renderer_preferences,
+        params.web_preferences,
+        new SharedRenderViewCounter(0),
+        params.view_id,
+        params.surface_id,
+        params.session_storage_namespace_id,
+        params.frame_name,
+        false,
+        params.swapped_out,
+        params.next_page_id,
+        params.screen_info,
+        channel,
+        params.accessibility_mode)->AsWeakPtr();
+  Send(new BrowserPluginHostMsg_ConnectToChannel(params.view_id,
+          success ? plugin_handle : IPC::ChannelHandle()));
+}
+
+bool BrowserPluginChannelManager::Send(IPC::Message* message) {

[jam, 2012/05/16 02:22:40]

nit: no need to have this wrapper function. just call RTI directly

[Fady Samuel, 2012/05/16 04:43:54]

Done.

+  return RenderThreadImpl::current()->Send(message);
+}
+
+bool BrowserPluginChannelManager::OnControlMessageReceived(
+    const IPC::Message& message) {
+  bool handled = true;
+  IPC_BEGIN_MESSAGE_MAP(BrowserPluginChannelManager, message)
+    IPC_MESSAGE_HANDLER(BrowserPluginMsg_CompleteNavigation,
+                        OnCompleteNavigation)
+    IPC_MESSAGE_HANDLER(BrowserPluginMsg_LoadGuest, OnLoadGuest)
+    IPC_MESSAGE_UNHANDLED(handled = false)
+  IPC_END_MESSAGE_MAP()
+
+  return handled;
+}
+
+GuestToEmbedderChannel* BrowserPluginChannelManager::GetChannelByName(
+    const std::string& embedder_channel_name) {
+  EmbedderChannelNameToChannelMap::iterator it =
+      embedder_channels_.find(embedder_channel_name);
+  if (it != embedder_channels_.end())
+    return it->second;
+  return NULL;
+}
+
+void BrowserPluginChannelManager::RemoveChannelByName(
+    const std::string& embedder_channel_name) {
+  embedder_channels_.erase(embedder_channel_name);
+}
+
+void BrowserPluginChannelManager::OnCompleteNavigation(
+    int guest_routing_id,
+    PP_Instance instance) {
+  CHECK(pending_navigations_.find(guest_routing_id) !=
+        pending_navigations_.end());
+  RenderViewImpl* render_view = pending_navigations_[guest_routing_id];
+  pending_navigations_.erase(guest_routing_id);
+  GuestToEmbedderChannel* channel = render_view->guest_to_embedder_channel();
+  // Associate the RenderView with the provided PP_Instance ID, request the
+  // receipt of events, and initialize the graphics context.
+  channel->AddGuest(instance, render_view);
+  channel->RequestInputEvents(instance);
+  render_view->GuestReady(instance);
+}
+
+void BrowserPluginChannelManager::OnLoadGuest(
+    int instance_id,
+    int guest_process_id,
+    const IPC::ChannelHandle& channel_handle) {
+  BrowserPlugin* browser_plugin = BrowserPlugin::FromID(instance_id);
+  DCHECK(browser_plugin);

[jam, 2012/05/16 02:22:40]

nit: dcheck not useful here. if it's null, the next line will crash

[Fady Samuel, 2012/05/16 04:43:54]

Done.

+  browser_plugin->LoadGuest(guest_process_id, channel_handle);
+}
+
+}  // namespace content