content/browser/message_port_provider.cc

   1 // Copyright 2014 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "content/public/browser/message_port_provider.h"
   6
   7 #include "base/basictypes.h"
   8 #include "content/browser/browser_thread_impl.h"
   9 #include "content/browser/message_port_message_filter.h"
  10 #include "content/browser/message_port_service.h"
  11 #include "content/browser/renderer_host/render_process_host_impl.h"
  12 #include "content/browser/renderer_host/render_view_host_impl.h"
  13 #include "content/browser/web_contents/web_contents_impl.h"
  14 #include "content/common/view_messages.h"
  15 #include "content/public/browser/message_port_delegate.h"
  16
  17 namespace content {
  18
  19 // static
  20 void MessagePortProvider::PostMessageToFrame(
  21     WebContents* web_contents,
  22     const base::string16& source_origin,
  23     const base::string16& target_origin,
  24     const base::string16& data,
  25     const std::vector<TransferredMessagePort>& ports) {
  26   DCHECK_CURRENTLY_ON(BrowserThread::UI);
  27
  28   ViewMsg_PostMessage_Params params;
  29   params.is_data_raw_string = true;
  30   params.data = data;
  31   // Blink requires a source frame to transfer ports. This is why a
  32   // source routing id is set here. See WebDOMMessageEvent::initMessageEvent()
  33   params.source_routing_id = web_contents->GetRoutingID();
  34   params.source_origin = source_origin;
  35   params.target_origin = target_origin;
  36   params.message_ports = ports;
  37
  38   RenderProcessHostImpl* rph =
  39       static_cast<RenderProcessHostImpl*>(web_contents->GetRenderProcessHost());
  40   BrowserThread::PostTask(
  41       BrowserThread::IO, FROM_HERE,
  42       base::Bind(&MessagePortMessageFilter::RouteMessageEventWithMessagePorts,
  43                  rph->message_port_message_filter(),
  44                  web_contents->GetRoutingID(), params));
  45 }
  46
  47 // static
  48 void MessagePortProvider::CreateMessageChannel(MessagePortDelegate* delegate,
  49                                                int* port1,
  50                                                int* port2) {
  51   DCHECK_CURRENTLY_ON(BrowserThread::IO);
  52   *port1 = 0;
  53   *port2 = 0;
  54   MessagePortService* msp = MessagePortService::GetInstance();
  55   msp->Create(MSG_ROUTING_NONE, delegate, port1);
  56   msp->Create(MSG_ROUTING_NONE, delegate, port2);
  57   // Update the routing number of the message ports to be equal to the message
  58   // port numbers.
  59   msp->UpdateMessagePort(*port1, delegate, *port1);
  60   msp->UpdateMessagePort(*port2, delegate, *port2);
  61   msp->Entangle(*port1, *port2);
  62   msp->Entangle(*port2, *port1);
  63 }
  64
  65 // static
  66 void MessagePortProvider::PostMessageToPort(
  67     int sender_port_id,
  68     const MessagePortMessage& message,
  69     const std::vector<TransferredMessagePort>& sent_ports) {
  70   DCHECK_CURRENTLY_ON(BrowserThread::IO);
  71   MessagePortService* msp = MessagePortService::GetInstance();
  72   msp->PostMessage(sender_port_id, message, sent_ports);
  73 }
  74
  75 // static
  76 void MessagePortProvider::ClosePort(int message_port_id) {
  77   DCHECK_CURRENTLY_ON(BrowserThread::IO);
  78   MessagePortService* msp = MessagePortService::GetInstance();
  79   msp->ClosePort(message_port_id);
  80 }
  81
  82 // static
  83 void MessagePortProvider::OnMessagePortDelegateClosing(
  84     MessagePortDelegate* delegate) {
  85   MessagePortService::GetInstance()->OnMessagePortDelegateClosing(delegate);
  86 }
  87
  88 } // namespace content