console filters: provide update message

java/execution/openapi/src/com/intellij/execution/filters/ExceptionExFilterFactory.java

@@ -98,5 +98,10 @@ public class ExceptionExFilterFactory implements ExceptionFilterFactory {
         });
       }
     }
+
+    @Override
+    public String getUpdateMessage() {
+      return "Checking try/finally blocks";
+    }
   }
 }

java/java-impl/src/com/intellij/openapi/vcs/contentAnnotation/VcsContentAnnotationExceptionFilter.java

@@ -164,6 +164,11 @@ public class VcsContentAnnotationExceptionFilter implements Filter, FilterMixin
     }
   }
 
+  @Override
+  public String getUpdateMessage() {
+    return "Checking recent changes...";
+  }
+
   private static class LocalChangesCorrector {
     private final Map<VirtualFile, UpToDateLineNumberProvider> myRecentlyChanged;
     private final Project myProject;

platform/lang-api/src/com/intellij/execution/filters/CompositeFilter.java

@@ -77,6 +77,24 @@ public class CompositeFilter implements Filter, FilterMixin {
     }
   }
 
+  @Override
+  public String getUpdateMessage() {
+    final boolean dumb = myDumbService.isDumb();
+    List<Filter> filters = myFilters;
+    final List<String> updateMessage = new ArrayList<String>();
+    int count = filters.size();
+    //noinspection ForLoopReplaceableByForEach
+    for (int i = 0; i < count; i++) {
+      Filter filter = filters.get(i);
+
+      if (!(filter instanceof FilterMixin) || !((FilterMixin)filter).shouldRunHeavy()) continue;
+      if (!dumb || DumbService.isDumbAware(filter)) {
+        updateMessage.add(((FilterMixin)filter).getUpdateMessage());
+      }
+    }
+    return updateMessage.size() == 1 ? updateMessage.get(0) : "Updating...";
+  }
+
   public boolean isEmpty() {
     return myFilters.isEmpty();
   }

platform/lang-api/src/com/intellij/execution/filters/FilterMixin.java

@@ -31,6 +31,8 @@ public interface FilterMixin {
   @Nullable
   void applyHeavyFilter(Document copiedFragment, int startOffset, int startLineNumber, Consumer<AdditionalHighlight> consumer);
 
+  String getUpdateMessage();
+
   abstract class AdditionalHighlight {
     private final int myStart;
     private final int myEnd;

platform/lang-impl/src/com/intellij/execution/impl/ConsoleViewImpl.java

@@ -400,7 +400,7 @@ public class ConsoleViewImpl extends JPanel implements ConsoleView, ObservableCo
   public JComponent getComponent() {
     if (myMainPanel == null) {
       myMainPanel = new JPanel(new BorderLayout());
-      myJLayeredPane = new MyDiffContainer(myMainPanel, "Checking recent changes...");
+      myJLayeredPane = new MyDiffContainer(myMainPanel, myPredefinedMessageFilter.getUpdateMessage());
       add(myJLayeredPane, BorderLayout.CENTER);
     }