eu.cedarsoft.utils.springrcp.beanlist.ParentAwareBeanListView Maven / Gradle / Ivy

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package com.cedarsoft.utils.springrcp.beanlist;

import com.cedarsoft.utils.springrcp.selection.Selection;
import com.cedarsoft.utils.springrcp.selection.SelectionManager;
import org.jetbrains.annotations.NotNull;
import org.springframework.richclient.command.CommandGroup;

import javax.swing.table.TableModel;

/**
 * Shows a bean list view that is dependent on the selection of a "parent" bean
 * 
 * 

 * T is the type of the beans that are shown within this view.
 * P is the type of the "parent" bean.
 * 

 * Date: 24.08.2006

 * Time: 18:02:25

 *
 * @author Johannes Schneider -
 *         Xore Systems
 */
public class ParentAwareBeanListView extends BeanListView {
  private Class
 parentType;

  @Override
  protected void initSelectionChanges() {
    super.initSelectionChanges();

    //When the parent bean changes --> nearly everything should be updated
    SelectionManager.WindowSelectionManager windowSelectionManager = SelectionManager.getInstance().getWindowSelectionManager( getContext().getWindow() );
    windowSelectionManager.addSelectionListener( parentType, new SelectionManager.SelectionListener
() {
      public void notifySelectionChanged( @NotNull Selection
 selection ) {
        updateParentAwareElements( selection );
      }
    } );
  }

  @Override
  protected void finalizeInitialization() {
    SelectionManager.WindowSelectionManager windowSelectionManager = SelectionManager.getInstance().getWindowSelectionManager( getContext().getWindow() );
    Selection
 selection = windowSelectionManager.getSelection( getParentType() );
    updateParentAwareElements( selection );
  }

  @NotNull
  @Override
  protected CommandGroup createDefaultCommandGroup() {
    getCommandFactory().getNewCommand().setEnabled( false );
    return super.createDefaultCommandGroup();
  }

  protected void updateParentAwareElements( @NotNull Selection
 selection ) {
    /**
     * (dis/en)able new command
     */
    getCommandFactory().getNewCommand().setEnabled( !selection.isEmty() );

    TableModel tableModel = getTableModel();
    if ( tableModel instanceof ParentAware ) {
      ParentAware
 parentAware = ( ParentAware ) tableModel;
      if ( selection.isEmty() ) {
        parentAware.setParent( null );
      }
      if ( selection.isSingleSelection() ) {
        parentAware.setParent( parentAware.getParentType().cast( selection.getSingleSelection() ) );
      }
      if ( selection.isMultiSelection() ) {
        throw new UnsupportedOperationException( "not implemented for multi selection" );
      }
    }
  }

  @NotNull
  public Class
 getParentType() {
    if ( parentType == null ) {
      throw new IllegalStateException( "No ParentType has been set" );
    }
    return parentType;
  }

  public void setParentType( @NotNull Class parentType ) {
    this.parentType = parentType;
  }

}