Connecting webrtc-internals WebUI frontend with the backend

content/browser/media/webrtc_internals.cc

-// Copyright (c) 2013 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/browser/media/webrtc_internals.h"
-
-#include "content/browser/media/webrtc_internals_ui_observer.h"
-#include "content/common/media/peer_connection_tracker_messages.h"
-#include "content/public/browser/browser_thread.h"
-
-using base::DictionaryValue;
-using base::ProcessId;
-
-namespace content{
-
-WebRTCInternals::WebRTCInternals() {
-}
-
-WebRTCInternals::~WebRTCInternals() {
-}
-
-WebRTCInternals* WebRTCInternals::GetInstance() {
-  return Singleton<WebRTCInternals>::get();
-}
-
-void WebRTCInternals::AddPeerConnection(ProcessId pid,
-                                        const PeerConnectionInfo& info) {
-  DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
-  if (observers_.size()) {
-    DictionaryValue* dict = new DictionaryValue();
-    if (dict != NULL) {
-      dict->SetInteger("pid", static_cast<int>(pid));
-      dict->SetInteger("lid", info.lid);
-      dict->SetString("servers", info.servers);
-      dict->SetString("constraints", info.constraints);
-      dict->SetString("url", info.url);
-
-      SendUpdate("updatePeerConnectionAdded", dict);
-      peer_connection_data_.Append(dict);
-    }
-  }
-}
-
-void WebRTCInternals::RemovePeerConnection(ProcessId pid, int lid) {
-  DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
-  if (observers_.size()) {
-    DictionaryValue dict;
-    dict.SetInteger("pid", static_cast<int>(pid));
-    dict.SetInteger("lid", lid);
-    SendUpdate("updatePeerConnectionRemoved", &dict);
-
-    for (size_t i = 0; i < peer_connection_data_.GetSize(); ++i) {
-      DictionaryValue* dict = NULL;
-      peer_connection_data_.GetDictionary(i, &dict);
-
-      int this_pid = 0;
-      int this_lid = 0;
-      dict->GetInteger("pid", &this_pid);
-      dict->GetInteger("lid", &this_lid);
-      if (this_pid == static_cast<int>(pid) && this_lid == lid)
-        peer_connection_data_.Remove(i, NULL);
-    }
-  }
-}
-
-void WebRTCInternals::AddObserver(WebRTCInternalsUIObserver *observer) {
-  DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
-  observers_.AddObserver(observer);
-}
-
-void WebRTCInternals::RemoveObserver(WebRTCInternalsUIObserver *observer) {
-  DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
-  observers_.RemoveObserver(observer);
-}
-
-void WebRTCInternals::SendUpdate(const std::string& command, Value* value) {
-  DCHECK(observers_.size());
-
-  FOR_EACH_OBSERVER(WebRTCInternalsUIObserver,
-                    observers_,
-                    OnUpdate(command, value));
-}
-
-}  // namespace content