preselect initial text in "Run Rails generator" action

platform/lang-impl/src/com/intellij/ide/util/gotoByName/ChooseByNameBase.java

@@ -78,6 +78,7 @@ public abstract class ChooseByNameBase{
   protected final Project myProject;
   protected final ChooseByNameModel myModel;
   protected final String myInitialText;
+  private boolean myPreselectInitialText;
   private final Reference<PsiElement> myContext;
 
   protected Component myPreviouslyFocusedComponent;
@@ -147,6 +148,14 @@ public abstract class ChooseByNameBase{
     myContext = new WeakReference<PsiElement>(context);
   }
 
+  public boolean isPreselectInitialText() {
+    return myPreselectInitialText;
+  }
+
+  public void setPreselectInitialText(boolean preselectInitialText) {
+    myPreselectInitialText = preselectInitialText;
+  }
+
   /**
    * Set tool area. The method may be called only before invoke.
    * @param toolArea a tool area component
@@ -321,6 +330,9 @@ public abstract class ChooseByNameBase{
     myFuture = new ArrayList<Pair<String, Integer>>();
     myTextField = new MyTextField();
     myTextField.setText(myInitialText);
+    if (myPreselectInitialText) {
+      myTextField.select(0, myInitialText.length());
+    }
 
     final ActionMap actionMap = new ActionMap();
     actionMap.setParent(myTextField.getActionMap());

platform/lang-impl/src/com/intellij/ide/util/gotoByName/ChooseByNamePopup.java

@@ -40,6 +40,9 @@ public class ChooseByNamePopup extends ChooseByNameBase implements ChooseByNameP
   private ChooseByNamePopup(final Project project, final ChooseByNameModel model, final ChooseByNamePopup oldPopup,
                             final PsiElement context, @Nullable final String predefinedText) {
     super(project, model, oldPopup != null ? oldPopup.getEnteredText() : predefinedText, context);
+    if (oldPopup == null && predefinedText != null) {
+      setPreselectInitialText(true);
+    }
     if (oldPopup != null) { //inherit old focus owner
       myOldFocusOwner = oldPopup.myPreviouslyFocusedComponent;
     }