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  package org.apache.cayenne.modeler.editor.dbimport;
  
  import org.apache.cayenne.dbsync.reverse.dbimport.ReverseEngineering;
  import org.apache.cayenne.modeler.dialog.db.load.DbImportTreeNode;
  
  import javax.swing.tree.DefaultTreeModel;
  import javax.swing.tree.TreeNode;
  
  /**
   * @since 4.1
   */
  public class DbImportModel extends DefaultTreeModel {
  
      private DbImportTree dbSchemaTree;
      private boolean canBeCleaned;
  
      DbImportModel(TreeNode root) {
          super(root);
      }
  
      private void clearReverseEngineering(ReverseEngineering reverseEngineering) {
          reverseEngineering.getSchemas().clear();
          reverseEngineering.getCatalogs().clear();
          reverseEngineering.getIncludeTables().clear();
          reverseEngineering.getExcludeTables().clear();
          reverseEngineering.getIncludeColumns().clear();
          reverseEngineering.getExcludeColumns().clear();
          reverseEngineering.getIncludeProcedures().clear();
          reverseEngineering.getExcludeProcedures().clear();
      }
  
      private void preprocessTree() {
          DbImportTreeNode rootNode = (DbImportTreeNode) getRoot();
          if (rootNode.getChildCount() == 0) {
              ReverseEngineering reverseEngineering = ((ReverseEngineering) rootNode.getUserObject());
              if (canBeCleaned) {
                  clearReverseEngineering(reverseEngineering);
              }
              rootNode.add(new DbImportTreeNode(("Configuration is empty.")));
          }
      }
  
      public void reload(TreeNode node) {
          preprocessTree();
          super.reload(node);
          dbSchemaTree.repaint();
      }
  
      public void setDbSchemaTree(DbImportTree dbSchemaTree) {
          this.dbSchemaTree = dbSchemaTree;
      }
  
      public void setCanBeCleaned(boolean canBeCleaned) {
          this.canBeCleaned = canBeCleaned;
      }
  }
  