Implement sidebar support for extension action popups

chrome/browser/extensions/sidebar_container.cc

+// Copyright 2015 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/extensions/sidebar_container.h"
+
+#include "chrome/browser/chrome_notification_types.h"
+#include "chrome/browser/extensions/extension_service.h"
+#include "chrome/browser/extensions/extension_view_host_factory.h"
+#include "chrome/browser/extensions/sidebar_manager.h"
+#include "chrome/browser/ui/browser.h"
+#include "chrome/browser/ui/tabs/tab_strip_model.h"
+#include "content/public/browser/notification_details.h"
+#include "content/public/browser/notification_source.h"
+#include "content/public/browser/web_contents.h"
+#include "url/gurl.h"
+
+namespace extensions {
+SidebarContainer::SidebarContainer(Browser* browser,
+                                   content::WebContents* tab,
+                                   const GURL& url)
+    : host_(extensions::ExtensionViewHostFactory::CreateSidebarHost(url,
+                                                                    browser)),
+      tab_(tab),
+      browser_(browser),
+      tab_strip_model_observer_(this) {
+  // Listen for the containing view calling window.close();
+  registrar_.Add(
+      this, extensions::NOTIFICATION_EXTENSION_HOST_VIEW_SHOULD_CLOSE,
+      content::Source<content::BrowserContext>(host_->browser_context()));
+
+  host_->CreateRenderViewSoon();
+  sidebar_contents()->SetInitialFocus();
+
+  tab_strip_model_observer_.Add(browser_->tab_strip_model());
+}
+
+SidebarContainer::~SidebarContainer() {
+  tab_strip_model_observer_.Remove(browser_->tab_strip_model());
+}
+
+void SidebarContainer::TabClosingAt(TabStripModel* tab_strip_model,
+                                    content::WebContents* contents,
+                                    int index) {
+  if (tab_ == contents)
+    extensions::SidebarManager::GetFromContext(host_->browser_context())
+        ->HideSidebar(tab_);
+}
+
+void SidebarContainer::Observe(int type,
+                               const content::NotificationSource& source,
+                               const content::NotificationDetails& details) {
+  DCHECK_EQ(type, extensions::NOTIFICATION_EXTENSION_HOST_VIEW_SHOULD_CLOSE)
+      << "Received unexpected notification";
+
+  // If we aren't the host of the popup, then disregard the notification.
+  if (content::Details<extensions::ExtensionHost>(host_.get()) == details)
+    extensions::SidebarManager::GetFromContext(host_->browser_context())
+        ->HideSidebar(tab_);
+}
+
+}  // namespace extensions