Move chrome://media-internals to content. This allows us to hide implementation details from the pu…

chrome/browser/ui/webui/media/media_internals_proxy.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 "chrome/browser/ui/webui/media/media_internals_proxy.h"
-
-#include "base/bind.h"
-#include "chrome/browser/browser_process.h"
-#include "chrome/browser/io_thread.h"
-#include "chrome/browser/media/media_internals.h"
-#include "chrome/browser/net/chrome_net_log.h"
-#include "chrome/browser/ui/webui/media/media_internals_handler.h"
-#include "content/public/browser/notification_service.h"
-#include "content/public/browser/notification_types.h"
-#include "content/public/browser/render_process_host.h"
-#include "content/public/browser/web_ui.h"
-
-using content::BrowserThread;
-
-static const int kMediaInternalsProxyEventDelayMilliseconds = 100;
-
-static const net::NetLog::EventType kNetEventTypeFilter[] = {
-  net::NetLog::TYPE_DISK_CACHE_ENTRY_IMPL,
-  net::NetLog::TYPE_SPARSE_READ,
-  net::NetLog::TYPE_SPARSE_WRITE,
-  net::NetLog::TYPE_URL_REQUEST_START_JOB,
-  net::NetLog::TYPE_HTTP_TRANSACTION_READ_RESPONSE_HEADERS,
-};
-
-MediaInternalsProxy::MediaInternalsProxy() {
-  io_thread_ = g_browser_process->io_thread();
-  registrar_.Add(this, content::NOTIFICATION_RENDERER_PROCESS_TERMINATED,
-                 content::NotificationService::AllBrowserContextsAndSources());
-}
-
-void MediaInternalsProxy::Observe(int type,
-                                  const content::NotificationSource& source,
-                                  const content::NotificationDetails& details) {
-  DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
-  DCHECK_EQ(type, content::NOTIFICATION_RENDERER_PROCESS_TERMINATED);
-  content::RenderProcessHost* process =
-      content::Source<content::RenderProcessHost>(source).ptr();
-  CallJavaScriptFunctionOnUIThread("media.onRendererTerminated",
-      base::Value::CreateIntegerValue(process->GetID()));
-}
-
-void MediaInternalsProxy::Attach(MediaInternalsMessageHandler* handler) {
-  DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
-  handler_ = handler;
-  BrowserThread::PostTask(
-      BrowserThread::IO, FROM_HERE,
-      base::Bind(&MediaInternalsProxy::ObserveMediaInternalsOnIOThread, this));
-}
-
-void MediaInternalsProxy::Detach() {
-  DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
-  handler_ = NULL;
-  BrowserThread::PostTask(
-      BrowserThread::IO, FROM_HERE,
-      base::Bind(
-          &MediaInternalsProxy::StopObservingMediaInternalsOnIOThread, this));
-}
-
-void MediaInternalsProxy::GetEverything() {
-  DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
-
-  // Ask MediaInternals for all its data.
-  BrowserThread::PostTask(
-      BrowserThread::IO, FROM_HERE,
-      base::Bind(&MediaInternalsProxy::GetEverythingOnIOThread, this));
-
-  // Send the page names for constants.
-  CallJavaScriptFunctionOnUIThread("media.onReceiveConstants", GetConstants());
-}
-
-void MediaInternalsProxy::OnUpdate(const string16& update) {
-  DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
-  BrowserThread::PostTask(
-      BrowserThread::UI, FROM_HERE,
-      base::Bind(&MediaInternalsProxy::UpdateUIOnUIThread, this, update));
-}
-
-void MediaInternalsProxy::OnAddEntry(const net::NetLog::Entry& entry) {
-  bool is_event_interesting = false;
-  for (size_t i = 0; i < arraysize(kNetEventTypeFilter); i++) {
-    if (entry.type() == kNetEventTypeFilter[i]) {
-      is_event_interesting = true;
-      break;
-    }
-  }
-
-  if (!is_event_interesting)
-    return;
-
-  BrowserThread::PostTask(
-      BrowserThread::UI, FROM_HERE,
-      base::Bind(&MediaInternalsProxy::AddNetEventOnUIThread, this,
-                 entry.ToValue()));
-}
-
-MediaInternalsProxy::~MediaInternalsProxy() {}
-
-Value* MediaInternalsProxy::GetConstants() {
-  DictionaryValue* event_phases = new DictionaryValue();
-  event_phases->SetInteger(
-      net::NetLog::EventPhaseToString(net::NetLog::PHASE_NONE),
-      net::NetLog::PHASE_NONE);
-  event_phases->SetInteger(
-      net::NetLog::EventPhaseToString(net::NetLog::PHASE_BEGIN),
-      net::NetLog::PHASE_BEGIN);
-  event_phases->SetInteger(
-      net::NetLog::EventPhaseToString(net::NetLog::PHASE_END),
-      net::NetLog::PHASE_END);
-
-  DictionaryValue* constants = new DictionaryValue();
-  constants->Set("eventTypes", net::NetLog::GetEventTypesAsValue());
-  constants->Set("eventPhases", event_phases);
-
-  return constants;
-}
-
-void MediaInternalsProxy::ObserveMediaInternalsOnIOThread() {
-  DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
-  MediaInternals::GetInstance()->AddObserver(this);
-  io_thread_->net_log()->AddThreadSafeObserver(this,
-                                               net::NetLog::LOG_ALL_BUT_BYTES);
-}
-
-void MediaInternalsProxy::StopObservingMediaInternalsOnIOThread() {
-  DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
-  MediaInternals::GetInstance()->RemoveObserver(this);
-  io_thread_->net_log()->RemoveThreadSafeObserver(this);
-}
-
-void MediaInternalsProxy::GetEverythingOnIOThread() {
-  DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
-  MediaInternals::GetInstance()->SendEverything();
-}
-
-void MediaInternalsProxy::UpdateUIOnUIThread(const string16& update) {
-  DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
-  // Don't forward updates to a destructed UI.
-  if (handler_)
-    handler_->OnUpdate(update);
-}
-
-void MediaInternalsProxy::AddNetEventOnUIThread(Value* entry) {
-  DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
-
-  // Send the updates to the page in kMediaInternalsProxyEventDelayMilliseconds
-  // if an update is not already pending.
-  if (!pending_net_updates_.get()) {
-    pending_net_updates_.reset(new ListValue());
-    MessageLoop::current()->PostDelayedTask(
-        FROM_HERE,
-        base::Bind(
-            &MediaInternalsProxy::SendNetEventsOnUIThread, this),
-        base::TimeDelta::FromMilliseconds(
-            kMediaInternalsProxyEventDelayMilliseconds));
-  }
-  pending_net_updates_->Append(entry);
-}
-
-void MediaInternalsProxy::SendNetEventsOnUIThread() {
-  DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
-  CallJavaScriptFunctionOnUIThread("media.onNetUpdate",
-                                   pending_net_updates_.release());
-}
-
-void MediaInternalsProxy::CallJavaScriptFunctionOnUIThread(
-    const std::string& function, Value* args) {
-  DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
-  scoped_ptr<Value> args_value(args);
-  std::vector<const Value*> args_vector;
-  args_vector.push_back(args_value.get());
-  string16 update = content::WebUI::GetJavascriptCall(function, args_vector);
-  UpdateUIOnUIThread(update);
-}