Refactor BalloonViewHost, removing a lot of duplicate code that crept into no...

chrome/browser/notifications/balloon_host.cc

+// Copyright (c) 2010 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/notifications/balloon_host.h"
+
+#include "chrome/browser/browser_list.h"
+#include "chrome/browser/in_process_webkit/webkit_context.h"
+#include "chrome/browser/extensions/extension_process_manager.h"
+#include "chrome/browser/notifications/balloon.h"
+#include "chrome/browser/profile.h"
+#include "chrome/browser/renderer_host/render_view_host.h"
+#include "chrome/browser/renderer_host/site_instance.h"
+#include "chrome/browser/renderer_preferences_util.h"
+#include "chrome/common/bindings_policy.h"
+#include "chrome/common/notification_service.h"
+#include "chrome/common/notification_type.h"
+#include "chrome/common/render_messages.h"
+#include "chrome/common/renderer_preferences.h"
+#include "chrome/common/url_constants.h"
+
+BalloonHost::BalloonHost(Balloon* balloon)
+    : render_view_host_(NULL),
+      balloon_(balloon),
+      initialized_(false),
+      should_notify_on_disconnect_(false),
+      is_extension_page_(false) {
+  DCHECK(balloon_);
+
+  // If the notification is for an extension URL, make sure to use the extension
+  // process to render it, so that it can communicate with other views in the
+  // extension.
+  const GURL& balloon_url = balloon_->notification().content_url();
+  if (balloon_url.SchemeIs(chrome::kExtensionScheme)) {
+    is_extension_page_ = true;
+    site_instance_ =
+      balloon_->profile()->GetExtensionProcessManager()->GetSiteInstanceForURL(
+          balloon_url);
+  } else {
+    site_instance_ = SiteInstance::CreateSiteInstance(balloon_->profile());
+  }
+}
+
+void BalloonHost::Shutdown() {
+  if (render_view_host_) {
+    render_view_host_->Shutdown();
+    render_view_host_ = NULL;
+  }
+}
+
+WebPreferences BalloonHost::GetWebkitPrefs() {
+  WebPreferences prefs;
+  prefs.allow_scripts_to_close_windows = true;
+  return prefs;
+}
+
+void BalloonHost::Close(RenderViewHost* render_view_host) {
+  balloon_->CloseByScript();
+}
+
+
+void BalloonHost::RenderViewCreated(RenderViewHost* render_view_host) {
+  render_view_host->Send(new ViewMsg_EnablePreferredSizeChangedMode(
+      render_view_host->routing_id()));
+}
+
+void BalloonHost::RendererReady(RenderViewHost* render_view_host) {
+  should_notify_on_disconnect_ = true;
+  NotificationService::current()->Notify(
+      NotificationType::NOTIFY_BALLOON_CONNECTED,
+      Source<Balloon>(balloon_), NotificationService::NoDetails());
+}
+
+void BalloonHost::RendererGone(RenderViewHost* render_view_host) {
+  if (!should_notify_on_disconnect_)
+    return;
+
+  should_notify_on_disconnect_ = false;
+  NotificationService::current()->Notify(
+      NotificationType::NOTIFY_BALLOON_DISCONNECTED,
+      Source<Balloon>(balloon_), NotificationService::NoDetails());
+}
+
+// RenderViewHostDelegate::View methods implemented to allow links to
+// open pages in new tabs.
+void BalloonHost::CreateNewWindow(int route_id) {
+  delegate_view_helper_.CreateNewWindow(
+      route_id, balloon_->profile(), site_instance_.get(),
+      DOMUIFactory::GetDOMUIType(balloon_->notification().content_url()), NULL);
+}
+
+void BalloonHost::ShowCreatedWindow(int route_id,
+                                        WindowOpenDisposition disposition,
+                                        const gfx::Rect& initial_pos,
+                                        bool user_gesture) {
+  // Don't allow pop-ups from notifications.
+  if (disposition == NEW_POPUP)
+    return;
+
+  TabContents* contents = delegate_view_helper_.GetCreatedWindow(route_id);
+  if (contents) {
+    Browser* browser = BrowserList::GetLastActive();
+    browser->AddTabContents(contents, disposition, initial_pos, user_gesture);
+  }
+}
+
+void BalloonHost::UpdatePreferredSize(const gfx::Size& new_size) {
+  balloon_->SetContentPreferredSize(new_size);
+}
+
+void BalloonHost::Init() {
+  DCHECK(!render_view_host_) << "BalloonViewHost already initialized.";
+  int64 session_storage_namespace_id = balloon_->profile()->GetWebKitContext()->
+      dom_storage_context()->AllocateSessionStorageNamespaceId();
+  RenderViewHost* rvh = new RenderViewHost(site_instance_.get(),
+                                           this, MSG_ROUTING_NONE,
+                                           session_storage_namespace_id);
+  if (is_extension_page_)
+    rvh->AllowBindings(BindingsPolicy::EXTENSION);
+
+  // Do platform-specific initialization.
+  render_view_host_ = rvh;
+  InitRenderWidgetHostView();
+  DCHECK(render_widget_host_view());
+
+  rvh->set_view(render_widget_host_view());
+  rvh->CreateRenderView(GetProfile()->GetRequestContext());
+  rvh->NavigateToURL(balloon_->notification().content_url());
+
+  initialized_ = true;
+}