git log: re-search on cross in search field [review=ann]

platform/platform-api/src/com/intellij/ui/SearchTextField.java

@@ -120,6 +120,7 @@ public class SearchTextField extends JPanel {
       myClearFieldLabel.addMouseListener(new MouseAdapter() {
         public void mousePressed(MouseEvent e) {
           myTextField.setText("");
+          onFieldCleared();
         }
       });
 
@@ -146,6 +147,9 @@ public class SearchTextField extends JPanel {
     }
   }
 
+  protected void onFieldCleared() {
+  }
+
   protected void onFocusLost() {
   }
 

platform/vcs-api/src/com/intellij/openapi/vcs/ui/SearchFieldAction.java

@@ -50,6 +50,11 @@ public abstract class SearchFieldAction extends AnAction implements CustomCompon
         myField.addCurrentTextToHistory();
         actionPerformed(null);
       }
+
+      @Override
+      protected void onFieldCleared() {
+        actionPerformed(null);
+      }
     };
     myComponent = new JPanel();
     final BoxLayout layout = new BoxLayout(myComponent, BoxLayout.X_AXIS);