Resubmit: Refactor external_install_ui

chrome/browser/extensions/external_install_manager.cc

+// Copyright 2014 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/external_install_manager.h"
+
+#include <string>
+
+#include "base/logging.h"
+#include "chrome/browser/chrome_notification_types.h"
+#include "chrome/browser/extensions/extension_service.h"
+#include "chrome/browser/extensions/external_install_error.h"
+#include "chrome/browser/profiles/profile.h"
+#include "chrome/common/extensions/manifest_url_handler.h"
+#include "content/public/browser/notification_details.h"
+#include "content/public/browser/notification_source.h"
+#include "extensions/browser/extension_registry.h"
+#include "extensions/browser/extension_system.h"
+#include "extensions/common/extension.h"
+
+namespace extensions {
+
+ExternalInstallManager::ExternalInstallManager(
+    content::BrowserContext* browser_context)
+    : browser_context_(browser_context),
+      extension_registry_observer_(this) {
+  DCHECK(browser_context_);
+  extension_registry_observer_.Add(ExtensionRegistry::Get(browser_context_));
+  registrar_.Add(this,
+                 chrome::NOTIFICATION_EXTENSION_REMOVED,
+                 content::Source<Profile>(
+                     Profile::FromBrowserContext(browser_context_)));
+}
+
+ExternalInstallManager::~ExternalInstallManager() {
+}
+
+void ExternalInstallManager::AddExternalInstallError(const Extension* extension,
+                                                     bool is_new_profile) {
+  if (HasExternalInstallError())
+    return;  // Only have one external install error at a time.
+
+  if (ManifestURL::UpdatesFromGallery(extension) && !is_new_profile) {
+    error_.reset(new ExternalInstallError(browser_context_,
+                                          extension->id(),
+                                          ExternalInstallError::BUBBLE_ALERT,
+                                          this));
+  } else {
+    error_.reset(new ExternalInstallError(browser_context_,
+                                          extension->id(),
+                                          ExternalInstallError::MENU_ALERT,
+                                          this));
+  }
+}
+
+void ExternalInstallManager::RemoveExternalInstallError() {
+  if (error_.get()) {
+    error_.reset();
+    ExtensionSystem::Get(browser_context_)
+        ->extension_service()
+        ->UpdateExternalExtensionAlert();
+  }
+}
+
+bool ExternalInstallManager::HasExternalInstallError() const {
+  return error_.get() != NULL;
+}
+
+bool ExternalInstallManager::HasExternalInstallBubble() const {
+  return error_.get() &&
+         error_->alert_type() == ExternalInstallError::BUBBLE_ALERT;
+}
+
+void ExternalInstallManager::OnExtensionLoaded(
+    content::BrowserContext* browser_context,
+    const Extension* extension) {
+  // The error is invalidated if the extension has been loaded or removed.
+  if (error_.get() && extension->id() == error_->extension_id()) {
+    // We treat loading as acknowledgement (since the user consciously chose to
+    // re-enable the extension).
+    error_->AcknowledgeExtension();
+    RemoveExternalInstallError();
+  }
+}
+
+void ExternalInstallManager::Observe(
+    int type,
+    const content::NotificationSource& source,
+    const content::NotificationDetails& details) {
+  DCHECK_EQ(chrome::NOTIFICATION_EXTENSION_REMOVED, type);
+  // The error is invalidated if the extension has been loaded or removed.
+  // It's a shame we have to use the notification system (instead of the
+  // registry observer) for this, but the ExtensionUnloaded notification is
+  // not sent out if the extension is disabled (which it is here).
+  if (error_.get() &&
+      content::Details<const Extension>(details).ptr()->id() ==
+          error_->extension_id()) {
+    RemoveExternalInstallError();
+  }
+}
+
+}  // namespace extensions