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  package org.apache.cayenne.modeler.editor;
  
  import java.util.EventObject;
  
  /** 
   * Callback interface for panels of detail views to process existing 
   * selections. When tab is selected processExistingSelection() is 
   * called to reset the state if the tab has any rows selected.
   * For example, this is useful when we want to reset the state of the 
   * "Remove" button if the tab has attributes (relationships) already 
   * selected. 
   */
  public interface ExistingSelectionProcessor {
      /** 
       * Called when tab is selected. Resets the state there are any rows selected.
       * For example, it is useful when we want to reset "Remove" button 
       * if the tab has attributes (relationships) already selected. 
       */
      public void processExistingSelection(EventObject e);
  
  }
  