Adds UI components for desktop notifications, including balloon view classes ...

chrome/browser/views/notifications/balloon_view_host.cc

+// Copyright (c) 2009 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/views/notifications/balloon_view_host.h"
+
+#include "base/string_util.h"
+#include "chrome/browser/browser_list.h"
+#include "chrome/browser/notifications/balloon.h"
+#include "chrome/browser/notifications/notification.h"
+#include "chrome/browser/profile.h"
+#include "chrome/browser/renderer_host/render_view_host.h"
+#include "chrome/browser/renderer_host/render_widget_host_view.h"
+#if defined(OS_WIN)
+#include "chrome/browser/renderer_host/render_widget_host_view_win.h"
+#endif
+#include "chrome/browser/renderer_host/site_instance.h"
+#include "chrome/common/notification_service.h"
+#include "chrome/common/notification_type.h"
+#include "chrome/common/renderer_preferences.h"
+#include "views/widget/widget.h"
+#include "views/widget/widget_win.h"
+
+BalloonViewHost::BalloonViewHost(Balloon* balloon)
+    : balloon_(balloon),
+      site_instance_(SiteInstance::CreateSiteInstance(balloon->profile())),
+      render_view_host_(NULL),
+      should_notify_on_disconnect_(false),
+      initialized_(false) {
+  DCHECK(balloon_);
+}
+
+void BalloonViewHost::Shutdown() {
+  if (render_view_host_) {
+    render_view_host_->Shutdown();
+    render_view_host_ = NULL;
+  }
+}
+
+RendererPreferences BalloonViewHost::GetRendererPrefs() const {
+  // We want links (a.k.a. top_level_requests) to be forwarded to the browser so
+  // that we can open them in a new tab rather than in the balloon.
+  RendererPreferences prefs = RendererPreferences();
+  prefs.browser_handles_top_level_requests = true;
+  return prefs;
+}
+
+void BalloonViewHost::RequestOpenURL(const GURL& url,
+                                     const GURL& referrer,
+                                     WindowOpenDisposition disposition) {
+  // Always open a link triggered within the notification balloon in a new tab.
+  BrowserList::GetLastActive()->AddTabWithURL(url, referrer,
+      PageTransition::LINK, true, 0, 0, GetSiteInstance());
+}
+
+void BalloonViewHost::RendererReady(RenderViewHost* /* render_view_host */) {
+  should_notify_on_disconnect_ = true;
+  NotificationService::current()->Notify(
+      NotificationType::NOTIFY_BALLOON_CONNECTED,
+      Source<Balloon>(balloon_), NotificationService::NoDetails());
+}
+
+void BalloonViewHost::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());
+}
+
+void BalloonViewHost::Init(gfx::NativeView parent_hwnd) {
+  DCHECK(!render_view_host_) << "BalloonViewHost already initialized.";
+  RenderViewHost* rvh = new RenderViewHost(site_instance_.get(),
+                                           this, MSG_ROUTING_NONE);
+  render_view_host_ = rvh;
+
+  // Pointer is owned by the RVH.
+  RenderWidgetHostView* view = RenderWidgetHostView::CreateViewForWidget(rvh);
+  rvh->set_view(view);
+
+  // TODO(johnnyg): http://crbug.com/23954.  Need a cross-platform solution.
+#if defined(OS_WIN)
+  RenderWidgetHostViewWin* view_win =
+      static_cast<RenderWidgetHostViewWin*>(view);
+
+  // Create the HWND.
+  HWND hwnd = view_win->Create(parent_hwnd);
+  view_win->ShowWindow(SW_SHOW);
+  Attach(hwnd);
+#else
+  NOTIMPLEMENTED();
+#endif
+
+  // Start up the renderer and point it at the balloon contents URL.
+  rvh->CreateRenderView();
+  rvh->NavigateToURL(balloon_->notification().content_url());
+  initialized_ = true;
+}
+
+void BalloonViewHost::ViewHierarchyChanged(bool is_add, views::View* parent,
+                                           views::View* child) {
+  NativeViewHost::ViewHierarchyChanged(is_add, parent, child);
+  if (is_add && GetWidget() && !initialized_)
+    Init(GetWidget()->GetNativeView());
+}