Make MediaInternalsUI talk to MediaInternals.

chrome/browser/ui/webui/media_internals_ui.cc

 // Copyright (c) 2011 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_internals_ui.h"
 
 #include "base/memory/ref_counted_memory.h"
 #include "base/values.h"
+#include "chrome/browser/browser_process.h"
+#include "chrome/browser/io_thread.h"
+#include "chrome/browser/media/media_internals.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/ui/tab_contents/tab_contents_wrapper.h"
 #include "chrome/browser/ui/webui/chrome_url_data_manager.h"
 #include "chrome/common/jstemplate_builder.h"
 #include "chrome/common/url_constants.h"
 #include "grit/browser_resources.h"
 #include "ui/base/resource/resource_bundle.h"
 
 namespace {
 
@@ skipping 45 matching lines @@
   SendResponse(request_id, bytes);
 }
 
 std::string MediaInternalsHTMLSource::GetMimeType(
     const std::string& path) const {
   return "text/html";
 }
 
 } // namespace
 
+////////////////////////////////////////////////////////////////////////////////
+//
+// MediaInternalsProxy
+//
+////////////////////////////////////////////////////////////////////////////////
+
+MediaInternalsProxy::MediaInternalsProxy() {
+  io_thread_ = g_browser_process->io_thread();
+};
+
+void MediaInternalsProxy::SetUI(MediaInternalsUI* ui) {
+  ui_ = ui;
+  BrowserThread::PostTask(BrowserThread::IO, FROM_HERE,
+      NewRunnableMethod(this,
+          &MediaInternalsProxy::ObserveMediaInternalsOnIOThread));
+};
+
+void MediaInternalsProxy::RemoveUI() {
+  ui_ = NULL;
+  BrowserThread::PostTask(BrowserThread::IO, FROM_HERE,
+      NewRunnableMethod(this,
+          &MediaInternalsProxy::StopObservingMediaInternalsOnIOThread));
+}
+
+void MediaInternalsProxy::GetEverything() {
+  BrowserThread::PostTask(BrowserThread::IO, FROM_HERE,
+      NewRunnableMethod(this, &MediaInternalsProxy::GetEverythingOnIOThread));
+}
+
+void MediaInternalsProxy::OnUpdate(const string16& update) {
+  BrowserThread::PostTask(BrowserThread::UI, FROM_HERE,
+      NewRunnableMethod(this,
+          &MediaInternalsProxy::UpdateUIOnUIThread, update));
+}
+
+MediaInternalsProxy::~MediaInternalsProxy() {}
+
+void MediaInternalsProxy::ObserveMediaInternalsOnIOThread() {
+  io_thread_->globals()->media.media_internals->AddUI(this);
+}
+
+void MediaInternalsProxy::StopObservingMediaInternalsOnIOThread() {
+  io_thread_->globals()->media.media_internals->RemoveUI(this);
+}
+
+void MediaInternalsProxy::GetEverythingOnIOThread() {
+  io_thread_->globals()->media.media_internals->SendEverything();
+}
+
+void MediaInternalsProxy::UpdateUIOnUIThread(const string16& update) {
+  // Don't forward updates to a destructed UI.
+  if (ui_)
+    ui_->OnUpdate(update);
+}
 
 ////////////////////////////////////////////////////////////////////////////////
 //
 // MediaInternalsUI
 //
 ////////////////////////////////////////////////////////////////////////////////
 
 MediaInternalsUI::MediaInternalsUI(TabContents* contents)
-    : ChromeWebUI(contents) {
+    : ChromeWebUI(contents),
+      proxy_(new MediaInternalsProxy()){
   contents->profile()->GetChromeURLDataManager()->AddDataSource(
       new MediaInternalsHTMLSource());
+  proxy_->SetUI(this);
 }
 
+MediaInternalsUI::~MediaInternalsUI() {
+  proxy_->RemoveUI();
+}
+
+void MediaInternalsUI::OnWebUISend(const GURL& source_url,
+                                   const std::string& name,
+                                   const ListValue& content) {
+  if (name == "getAll")
+    proxy_->GetEverything();
+}
+
+void MediaInternalsUI::OnUpdate(const string16& update) {
+  ExecuteJavascript(update);
+}