enable "find" button when reopen Find dialog with empty search string and custom file mask

platform/lang-impl/src/com/intellij/find/impl/FindDialog.java

@@ -152,6 +152,7 @@ public class FindDialog extends DialogWrapper {
     init();
     initByModel();
     updateReplaceVisibility();
+    validateFindButton();
 
     if (haveResultsPreview()) {
       ApplicationManager.getApplication().invokeLater(new Runnable() {
@@ -835,11 +836,6 @@ public class FindDialog extends DialogWrapper {
     findSettings.setFileMask(myModel.getFileFilter());
   }
 
-  @Override
-  protected boolean postponeValidation() {
-    return true;
-  }
-
   @Nullable("null means OK")
   private ValidationInfo getValidationInfo(@NotNull FindModel model) {
     if (myRbDirectory != null && myRbDirectory.isEnabled() && myRbDirectory.isSelected()) {
@@ -1210,7 +1206,7 @@ public class FindDialog extends DialogWrapper {
     myScopeCombo = new ScopeChooserCombo();
     myScopeCombo.init(myProject, true, true, FindSettings.getInstance().getDefaultScopeName(), new Condition<ScopeDescriptor>() {
       //final String projectFilesScopeName = PsiBundle.message("psi.search.scope.project");
-      final String moduleFilesScopeName;
+      private final String moduleFilesScopeName;
       {
         String moduleScopeName = PsiBundle.message("search.scope.module", "");
         final int ind = moduleScopeName.indexOf(' ');
@@ -1629,7 +1625,7 @@ public class FindDialog extends DialogWrapper {
   }
 
   private static class UsageTableCellRenderer extends JPanel implements TableCellRenderer {
-    private ColoredTableCellRenderer myUsageRenderer = new ColoredTableCellRenderer() {
+    private final ColoredTableCellRenderer myUsageRenderer = new ColoredTableCellRenderer() {
       @Override
       protected void customizeCellRenderer(JTable table, Object value, boolean selected, boolean hasFocus, int row, int column) {
         if (value instanceof UsageInfo2UsageAdapter) {
@@ -1644,7 +1640,7 @@ public class FindDialog extends DialogWrapper {
         setBorder(null);
       }
     };
-    private ColoredTableCellRenderer myFileAndLineNumber = new ColoredTableCellRenderer() {
+    private final ColoredTableCellRenderer myFileAndLineNumber = new ColoredTableCellRenderer() {
       @Override
       protected void customizeCellRenderer(JTable table, Object value, boolean selected, boolean hasFocus, int row, int column) {
         if (value instanceof UsageInfo2UsageAdapter) {
@@ -1659,7 +1655,7 @@ public class FindDialog extends DialogWrapper {
       }
     };
 
-    UsageTableCellRenderer() {
+    private UsageTableCellRenderer() {
       setLayout(new BorderLayout());
 
       add(myUsageRenderer, BorderLayout.WEST);