notifications statusbar icons

platform/platform-impl/src/com/intellij/notification/impl/NotificationModel.java

@@ -104,7 +104,8 @@ public class NotificationModel {
 
   private LinkedList<Notification> filterNotifications(@NotNull PairFunction<Notification, Project, Boolean> filter) {
     final LinkedList<Notification> result = new LinkedList<Notification>();
-    final HashSet<Map.Entry<Notification, Pair<Project, Boolean>>> entries = new HashSet<Map.Entry<Notification, Pair<Project, Boolean>>>(myNotifications.entrySet());
+    final HashSet<Map.Entry<Notification, Pair<Project, Boolean>>> entries =
+      new HashSet<Map.Entry<Notification, Pair<Project, Boolean>>>(myNotifications.entrySet());
     for (final Map.Entry<Notification, Pair<Project, Boolean>> entry : entries) {
       if (filter.fun(entry.getKey(), entry.getValue().first)) {
         result.addFirst(entry.getKey());
@@ -183,4 +184,24 @@ public class NotificationModel {
   public boolean hasRead(PairFunction<Notification, Project, Boolean> filter) {
     return getUnreadCount(filter) < myNotifications.size();
   }
+
+  @Nullable
+  public NotificationType getMaximumType(PairFunction<Notification, Project, Boolean> filter) {
+    final LinkedList<Notification> notifications = filterNotifications(filter);
+    NotificationType result = null;
+    for (Notification notification : notifications) {
+      if (NotificationType.ERROR == notification.getType()) {
+        return NotificationType.ERROR;
+      }
+
+      if (NotificationType.WARNING == notification.getType()) {
+        result = NotificationType.WARNING;
+      }
+      else if (result == null && NotificationType.INFORMATION == notification.getType()) {
+        result = NotificationType.INFORMATION;
+      }
+    }
+
+    return result;
+  }
 }

platform/platform-impl/src/com/intellij/notification/impl/NotificationsManagerImpl.java

@@ -268,6 +268,11 @@ public class NotificationsManagerImpl extends NotificationsManager implements No
     return myModel.getByType(type, createFilter(project, false));
   }
 
+  @Nullable
+  public NotificationType getMaximumType(@Nullable final Project project) {
+    return myModel.getMaximumType(createFilter(project, false));
+  }
+
   public boolean hasUnread(@Nullable final Project project) {
     return myModel.hasUnread(createFilter(project, false));
   }

platform/platform-impl/src/com/intellij/notification/impl/ui/NotificationComponent.java

@@ -17,6 +17,7 @@ package com.intellij.notification.impl.ui;
 
 import com.intellij.concurrency.JobScheduler;
 import com.intellij.notification.Notification;
+import com.intellij.notification.NotificationType;
 import com.intellij.notification.impl.*;
 import com.intellij.openapi.project.Project;
 import com.intellij.openapi.ui.popup.JBPopup;
@@ -39,7 +40,9 @@ import java.util.concurrent.TimeUnit;
 public class NotificationComponent extends JLabel implements NotificationModelListener {
   private static final Icon EMPTY_ICON = IconLoader.getIcon("/ide/notifications.png");
   private static final Icon READ_ICON = IconLoader.getIcon("/ide/read_notifications.png");
-  private static final Icon UNREAD_ICON = IconLoader.getIcon("/ide/unread_notifications.png");
+  private static final Icon ERROR_ICON = IconLoader.getIcon("/ide/error_notifications.png");
+  private static final Icon WARNING_ICON = IconLoader.getIcon("/ide/warning_notifications.png");
+  private static final Icon INFO_ICON = IconLoader.getIcon("/ide/info_notifications.png");
 
   private WeakReference<JBPopup> myPopupRef;
 
@@ -112,11 +115,20 @@ public class NotificationComponent extends JLabel implements NotificationModelLi
     final NotificationsManagerImpl manager = getManager();
 
     Icon icon = EMPTY_ICON;
-    if (manager.hasUnread(getProject())) {
-      icon = UNREAD_ICON;
-    }
-    else if (manager.hasRead(getProject())) {
-      icon = READ_ICON;
+    final NotificationType maximumType = manager.getMaximumType(getProject());
+    if (maximumType != null) {
+      switch (maximumType) {
+        case WARNING:
+          icon = WARNING_ICON;
+          break;
+        case ERROR:
+          icon = ERROR_ICON;
+          break;
+        case INFORMATION:
+        default:
+          icon = INFO_ICON;
+          break;
+      }
     }
 
     myCurrentIcon = new BlinkIconWrapper(icon, false);