API to select UI elements the same way as speed search would do

platform/lang-impl/src/com/intellij/codeInsight/template/impl/TemplateListPanel.java

@@ -33,6 +33,7 @@ import com.intellij.openapi.util.Comparing;
 import com.intellij.openapi.util.EmptyRunnable;
 import com.intellij.openapi.util.text.StringUtil;
 import com.intellij.ui.*;
+import com.intellij.ui.speedSearch.SpeedSearchSupply;
 import com.intellij.util.Alarm;
 import com.intellij.util.NullableFunction;
 import com.intellij.util.ObjectUtils;
@@ -947,20 +948,7 @@ public class TemplateListPanel extends JPanel implements Disposable {
   }
 
   void selectNode(@NotNull String searchQuery) {
-    for (TemplateGroup group : myTemplateGroups) {
-      for (TemplateImpl template : group.getElements()) {
-        if (StringUtil.startsWithIgnoreCase(template.getKey(), searchQuery)) {
-          selectTemplate(group.getName(), template.getKey());
-          return;
-        }
-      }
-    }
-    for (TemplateGroup group : myTemplateGroups) {
-      if (StringUtil.startsWithIgnoreCase(group.getName(), searchQuery)) {
-        selectTemplate(group.getName(), null);
-        return;
-      }
-    }
+    ObjectUtils.assertNotNull(SpeedSearchSupply.getSupply(myTree, true)).findAndSelectElement(searchQuery);
   }
 
   private void selectTemplate(@Nullable final String groupName, @Nullable final String templateKey) {

platform/platform-api/src/com/intellij/ui/speedSearch/SpeedSearchSupply.java

@@ -80,4 +80,10 @@ public abstract class SpeedSearchSupply {
 
   public abstract void addChangeListener(@NotNull PropertyChangeListener listener);
   public abstract void removeChangeListener(@NotNull PropertyChangeListener listener);
+
+  /**
+   * Find an element matching the searching query in the underlying component and select it there. Speed-search popup is not affected.
+   * @param searchQuery text that the selected element should match
+   */
+  public abstract void findAndSelectElement(@NotNull String searchQuery);
 }

platform/platform-impl/src/com/intellij/ui/SpeedSearchBase.java

@@ -338,6 +338,11 @@ public abstract class SpeedSearchBase<Comp extends JComponent> extends SpeedSear
     if ( mySearchPopup != null ) mySearchPopup.refreshSelection();
   }
 
+  @Override
+  public void findAndSelectElement(@NotNull String searchQuery) {
+    selectElement(findElement(searchQuery), searchQuery);
+  }
+
   private class SearchPopup extends JPanel {
     private final SearchField mySearchField;
 
@@ -425,7 +430,7 @@ public abstract class SpeedSearchBase<Comp extends JComponent> extends SpeedSear
     }
 
     public void refreshSelection () {
-      updateSelection(findElement(mySearchField.getText()));
+      findAndSelectElement(mySearchField.getText());
     }
 
     private void updateSelection(Object element) {