Create a cross-platform helper class for badging the wrench menu.

chrome/browser/ui/toolbar/wrench_menu_badge_controller.cc

Index: chrome/browser/ui/toolbar/wrench_menu_badge_controller.cc
===================================================================
--- chrome/browser/ui/toolbar/wrench_menu_badge_controller.cc	(revision 0)
+++ chrome/browser/ui/toolbar/wrench_menu_badge_controller.cc	(working copy)
@@ -0,0 +1,136 @@
+// 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/ui/toolbar/wrench_menu_badge_controller.h"
+
+#include "base/logging.h"
+#include "chrome/browser/chrome_notification_types.h"
+#include "chrome/browser/ui/global_error/global_error_service.h"
+#include "chrome/browser/ui/global_error/global_error_service_factory.h"
+#include "chrome/browser/upgrade_detector.h"
+
+#if defined(OS_WIN)
+#include "base/win/windows_version.h"
+#include "chrome/browser/enumerate_modules_model_win.h"
+#endif
+
+namespace {
+
+// Maps an upgrade level to a severity level.
+WrenchIconPainter::Severity SeverityFromUpgradeLevel(
+    UpgradeDetector::UpgradeNotificationAnnoyanceLevel level) {
+  switch (level) {
+    case UpgradeDetector::UPGRADE_ANNOYANCE_NONE:
+      return WrenchIconPainter::SEVERITY_NONE;
+    case UpgradeDetector::UPGRADE_ANNOYANCE_LOW:
+      return WrenchIconPainter::SEVERITY_LOW;
+    case UpgradeDetector::UPGRADE_ANNOYANCE_ELEVATED:
+      return WrenchIconPainter::SEVERITY_MEDIUM;
+    case UpgradeDetector::UPGRADE_ANNOYANCE_HIGH:
+      return WrenchIconPainter::SEVERITY_HIGH;
+    case UpgradeDetector::UPGRADE_ANNOYANCE_SEVERE:
+      return WrenchIconPainter::SEVERITY_HIGH;
+    case UpgradeDetector::UPGRADE_ANNOYANCE_CRITICAL:
+      return WrenchIconPainter::SEVERITY_HIGH;
+  }
+  NOTREACHED();
+  return WrenchIconPainter::SEVERITY_NONE;
+}
+
+// Checks if the wrench icon should be animated for the given upgrade level.
+bool ShouldAnimateUpgradeLevel(
+    UpgradeDetector::UpgradeNotificationAnnoyanceLevel level) {
+  bool should_animate = true;
+  if (level == UpgradeDetector::UPGRADE_ANNOYANCE_LOW) {
+    // Only animate low severity upgrades once.
+    static bool should_animate_low_severity = true;
+    should_animate = should_animate_low_severity;
+    should_animate_low_severity = false;
+  }
+  return should_animate;
+}
+
+// Returns true if we should show the upgrade recommended badge.
+bool ShouldShowUpgradeRecommended() {
+#if defined(OS_CHROMEOS)
+  // In chromeos, the update recommendation is shown in the system tray. So it
+  // should not be displayed in the wrench menu.
+  return false;
+#else
+  return UpgradeDetector::GetInstance()->notify_upgrade();
+#endif
+}
+
+// Returns true if we should show the warning for incompatible software.
+bool ShouldShowIncompatibilityWarning() {
+#if defined(OS_WIN)
+  EnumerateModulesModel* loaded_modules = EnumerateModulesModel::GetInstance();
+  loaded_modules->MaybePostScanningTask();
+  return loaded_modules->ShouldShowConflictWarning();
+#else
+  return false;
+#endif
+}
+
+}  // namespace
+
+WrenchMenuBadgeController::WrenchMenuBadgeController(Profile* profile,
+                                                     Delegate* delegate)
+    : profile_(profile), delegate_(delegate) {
+  DCHECK(profile_);
+  DCHECK(delegate_);
+
+  registrar_.Add(this, chrome::NOTIFICATION_UPGRADE_RECOMMENDED,
+                 content::NotificationService::AllSources());
+  registrar_.Add(this, chrome::NOTIFICATION_GLOBAL_ERRORS_CHANGED,
+                 content::Source<Profile>(profile_));
+
+#if defined(OS_WIN)
+  if (base::win::GetVersion() == base::win::VERSION_XP) {
+    registrar_.Add(this, chrome::NOTIFICATION_MODULE_LIST_ENUMERATED,
+                   content::NotificationService::AllSources());
+  }
+  registrar_.Add(this, chrome::NOTIFICATION_MODULE_INCOMPATIBILITY_BADGE_CHANGE,
+                 content::NotificationService::AllSources());
+#endif
+}
+
+WrenchMenuBadgeController::~WrenchMenuBadgeController() {
+}
+
+void WrenchMenuBadgeController::UpdateDelegate() {
+  if (ShouldShowUpgradeRecommended()) {
+    UpgradeDetector::UpgradeNotificationAnnoyanceLevel level =
+        UpgradeDetector::GetInstance()->upgrade_notification_stage();
+    delegate_->UpdateBadgeSeverity(BADGE_TYPE_UPGRADE_NOTIFICATION,
+                                   SeverityFromUpgradeLevel(level),
+                                   ShouldAnimateUpgradeLevel(level));
+    return;
+  }
+
+  if (ShouldShowIncompatibilityWarning()) {
+    delegate_->UpdateBadgeSeverity(BADGE_TYPE_INCOMPATIBILITY_WARNING,
+                                   WrenchIconPainter::SEVERITY_MEDIUM, true);
+    return;
+  }
+
+  if (GlobalErrorServiceFactory::GetForProfile(profile_)->
+          GetHighestSeverityGlobalErrorWithWrenchMenuItem()) {
+    // If you change the severity here, make sure to also change the menu icon
+    // and the bubble icon.
+    delegate_->UpdateBadgeSeverity(BADGE_TYPE_GLOBAL_ERROR,
+                                   WrenchIconPainter::SEVERITY_MEDIUM, true);
+    return;
+  }
+
+  delegate_->UpdateBadgeSeverity(BADGE_TYPE_NONE,
+                                 WrenchIconPainter::SEVERITY_NONE, true);
+}
+
+void WrenchMenuBadgeController::Observe(
+    int type,
+    const content::NotificationSource& source,
+    const content::NotificationDetails& details) {
+  UpdateDelegate();
+}