
package jp.riken.brain.ni.samuraigraph.base;

import java.awt.Component;
import java.awt.Toolkit;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.KeyEvent;
import java.util.ArrayList;

import javax.swing.ButtonGroup;
import javax.swing.JCheckBoxMenuItem;
import javax.swing.JMenu;
import javax.swing.JMenuBar;
import javax.swing.JMenuItem;
import javax.swing.JRadioButtonMenuItem;
import javax.swing.KeyStroke;
import javax.swing.event.MenuEvent;
import javax.swing.event.MenuListener;

import jp.riken.brain.ni.samuraigraph.base.SGDrawingWindow.NodeMenuItem;

/**
 * A menu bar.
 *
 */
public class SGMenuBar extends JMenuBar
	implements ActionListener, MenuListener, SGIRootObjectConstants
{

	/**
	 * 
	 */
	public SGMenuBar()
	{
		super();
		
		this.create();
	}



	/**
	 * 
	 */
	private boolean create()
	{
		JMenuBar menuBar = this;

		final int shortcutmask = Toolkit.getDefaultToolkit().getMenuShortcutKeyMask();
//		final int ctrl = ActionEvent.CTRL_MASK;
		final int shift = ActionEvent.SHIFT_MASK;
		final int alt = ActionEvent.ALT_MASK;

		// File
		{
			final JMenu menuFile = new JMenu( MENUBAR_FILE );
			menuFile.setMnemonic( KeyEvent.VK_F );
			menuBar.add(menuFile);

			// open window
			this.createMenuItem(
				menuFile, MENUBARCMD_CREATE_NEW_WINDOW, this, KeyEvent.VK_N,
				KeyStroke.getKeyStroke(KeyEvent.VK_N, shortcutmask),
				true );

			// close window
			this.createMenuItem(
				menuFile, MENUBARCMD_CLOSE_WINDOW, this, KeyEvent.VK_W,
				KeyStroke.getKeyStroke(KeyEvent.VK_W, shortcutmask),
				true );

			menuFile.addSeparator();

			// draw graph
			this.createMenuItem(
				menuFile, MENUBARCMD_DRAW_GRAPH, this, KeyEvent.VK_D,
				KeyStroke.getKeyStroke(KeyEvent.VK_O, shortcutmask),
				true );

			menuFile.addSeparator();

			// load property
			this.createMenuItem(
				menuFile, MENUBARCMD_LOAD_PROPERTY, this, KeyEvent.VK_L,
				null, true );

			// save property
			this.createMenuItem(
				menuFile, MENUBARCMD_SAVE_PROPERTY, this, KeyEvent.VK_S,
				null, true );

			menuFile.addSeparator();

			// load dataset
			this.createMenuItem(
				menuFile, MENUBARCMD_LOAD_DATASET, this, -1, null, true );

			// save dataset
			this.createMenuItem(
				menuFile, MENUBARCMD_SAVE_DATASET, this, -1, null, true );

			menuFile.addSeparator();

			// load background image
			this.createMenuItem(
				menuFile, MENUBARCMD_LOAD_BACKGROUND_IMAGE, this, KeyEvent.VK_I,
				null, true );

			menuFile.addSeparator();
			
			// export as image
			this.createMenuItem(
				menuFile, MENUBARCMD_EXPORT_AS_IMAGE, this, KeyEvent.VK_E,
				KeyStroke.getKeyStroke(KeyEvent.VK_E, shortcutmask),
				false );

			// print
			this.createMenuItem(
				menuFile, MENUBARCMD_PRINT, this, KeyEvent.VK_P,
				KeyStroke.getKeyStroke(KeyEvent.VK_P, shortcutmask),
				false );

			menuFile.addSeparator();

			// exit
			this.createMenuItem(
				menuFile, MENUBARCMD_EXIT, this, KeyEvent.VK_X,
				KeyStroke.getKeyStroke(KeyEvent.VK_Q, shortcutmask),
				true );

		}


		// Edit
		{
			final JMenu menuEdit = new JMenu(MENUBAR_EDIT);
			menuEdit.setMnemonic( KeyEvent.VK_E );
			menuBar.add(menuEdit);

			// undo
			this.createMenuItem(
				menuEdit, MENUBARCMD_UNDO, this, KeyEvent.VK_U,
				KeyStroke.getKeyStroke(KeyEvent.VK_Z, shortcutmask),
				false );

			// redo
			this.createMenuItem(
				menuEdit, MENUBARCMD_REDO, this, KeyEvent.VK_R,
				KeyStroke.getKeyStroke(KeyEvent.VK_Y, shortcutmask),
				false );

			menuEdit.addSeparator();

			// clear undo buffer
			this.createMenuItem(
				menuEdit, MENUBARCMD_CLEAR_UNDO_BUFFER, this, KeyEvent.VK_B,
				null, true );

			menuEdit.addSeparator();

			// cut
			this.createMenuItem(
				menuEdit, MENUBARCMD_CUT, this, KeyEvent.VK_T,
				KeyStroke.getKeyStroke(KeyEvent.VK_X, shortcutmask),
				false );

			// copy
			this.createMenuItem(
				menuEdit, MENUBARCMD_COPY, this, KeyEvent.VK_C,
				KeyStroke.getKeyStroke(KeyEvent.VK_C, shortcutmask),
				false );

			// paste
			this.createMenuItem(
				menuEdit, MENUBARCMD_PASTE, this, KeyEvent.VK_P,
				KeyStroke.getKeyStroke(KeyEvent.VK_V, shortcutmask),
				false );

			menuEdit.addSeparator();

			// delete
			this.createMenuItem(
				menuEdit, MENUBARCMD_DELETE, this, KeyEvent.VK_D,
				KeyStroke.getKeyStroke(KeyEvent.VK_DELETE, 0),
				false );

/*
			final JMenuItem selectAll = new JMenuItem( MENUBARCMD_SELECT_ALL );
			selectAll.setActionCommand(MENUBARCMD_SELECT_ALL);
			selectAll.addActionListener(this);
			selectAll.setAccelerator(
				KeyStroke.getKeyStroke(KeyEvent.VK_A, ctrl));
			selectAll.setMnemonic( KeyEvent.VK_A );
			menuEdit.add(selectAll);
			selectAll.setEnabled(false);
*/

			// duplicate
			this.createMenuItem(
				menuEdit, MENUBARCMD_DUPLICATE, this, KeyEvent.VK_I,
				KeyStroke.getKeyStroke(KeyEvent.VK_D, shortcutmask),
				false );

			menuEdit.addSeparator();

			// delete background image
			this.createMenuItem(
				menuEdit, MENUBARCMD_DELETE_BACKGROUND_IMAGE, this, KeyEvent.VK_M,
				null, true );

		}


		// Insert
		{
			final JMenu menuInsert = new JMenu( MENUBAR_INSERT );
			menuInsert.setMnemonic( KeyEvent.VK_I );
			menuBar.add(menuInsert);

			// label
			JMenuItem label = 
			this.createToggleMenuItem(
				menuInsert, MENUBARCMD_INSERT_LABEL, this, KeyEvent.VK_L,
				null, false );

			// significant difference
			JMenuItem sigDiff =
			this.createToggleMenuItem(
				menuInsert, MENUBARCMD_INSERT_SIG_DIFF_SYMBOL, this, KeyEvent.VK_D,
				null, false );

			// axis break
			JMenuItem axisBreak =
			this.createToggleMenuItem(
				menuInsert, MENUBARCMD_INSERT_AXIS_BREAK_SYMBOL, this, KeyEvent.VK_B,
				null, false );

			// timing line
			JMenuItem timingLine =
			this.createToggleMenuItem(
				menuInsert, MENUBARCMD_INSERT_TIMING_LINE, this, KeyEvent.VK_T,
				null, false );

			// rectangle
			JMenuItem rectangle =
			this.createToggleMenuItem(
				menuInsert, MENUBARCMD_INSERT_RECTANGLE, this, KeyEvent.VK_R,
				null, false );

			// ellipse
			JMenuItem ellipse =
			this.createToggleMenuItem(
				menuInsert, MENUBARCMD_INSERT_ELLIPSE, this, KeyEvent.VK_E,
				null, false );

			// arrow
			JMenuItem arrow =
			this.createToggleMenuItem(
				menuInsert, MENUBARCMD_INSERT_ARROW, this, KeyEvent.VK_A,
				null, false );

			// line
			JMenuItem line =
			this.createToggleMenuItem(
				menuInsert, MENUBARCMD_INSERT_LINE, this, KeyEvent.VK_I,
				null, false );

			//
			SGButtonGroup bg = new SGButtonGroup();
			bg.add( label );
			bg.add( sigDiff );
			bg.add( axisBreak );
			bg.add( timingLine );
			bg.add( rectangle );
			bg.add( ellipse );
			bg.add( arrow );
			bg.add( line );
		}


		// Layout
		{
			final JMenu menuLayout = new JMenu(MENUBAR_LAYOUT);
			menuLayout.setMnemonic( KeyEvent.VK_L );
			menuBar.add(menuLayout);

			// Paper Size
			{
				final JMenu menuPaperSize = new JMenu(MENUBAR_PAPER_SIZE);
				menuPaperSize.setMnemonic( KeyEvent.VK_P );
				menuLayout.add(menuPaperSize);

				// A4
				this.createMenuItem(
					menuPaperSize, MENUBARCMD_PAPER_A4_SIZE, this, KeyEvent.VK_4,
					null, true );

				// B5
				this.createMenuItem(
					menuPaperSize, MENUBARCMD_PAPER_B5_SIZE, this, KeyEvent.VK_5,
					null, true );

				// A4
				this.createMenuItem(
					menuPaperSize, MENUBARCMD_PAPER_USLETTER_SIZE, this, KeyEvent.VK_U,
					null, true );

				menuPaperSize.addSeparator();


				// portrait
				JRadioButtonMenuItem portrait
					= (JRadioButtonMenuItem)this.createRadioButtonMenuItem(
					menuPaperSize, MENUBARCMD_PAPER_PORTRAIT, this, KeyEvent.VK_P,
					null, true );

				// landscape
				JRadioButtonMenuItem landscape
					= (JRadioButtonMenuItem)this.createRadioButtonMenuItem(
					menuPaperSize, MENUBARCMD_PAPER_LANDSCAPE, this, KeyEvent.VK_L,
					null, true );

				// create a button-group
				ButtonGroup bGroup = new ButtonGroup();
				bGroup.add(portrait);
				bGroup.add(landscape);

				menuPaperSize.addSeparator();


				// bounding box
				this.createMenuItem(
					menuPaperSize, MENUBARCMD_BOUNDING_BOX, this, KeyEvent.VK_B,
					null, true );

				// user customize
				this.createMenuItem(
					menuPaperSize, MENUBARCMD_PAPER_USER_CUSTOMIZE, this, KeyEvent.VK_C,
					null, true );

			}

			menuLayout.addSeparator();


			// Tool Bar
			{
				final JMenu menuToolBar = new JMenu(MENUBAR_TOOL_BAR);
				menuToolBar.setMnemonic( KeyEvent.VK_T );
				menuLayout.add(menuToolBar);
				
				JCheckBoxMenuItem item;

				// File
				item = this.createCheckBoxMenuItem(
					menuToolBar, MENUBARCMD_VISIBLE_FILE, this, -1, null, true );
				item.setSelected(true);

				// Edit
				item = this.createCheckBoxMenuItem(
					menuToolBar, MENUBARCMD_VISIBLE_EDIT, this, -1, null, true );
				item.setSelected(true);

				// Insert
				item = this.createCheckBoxMenuItem(
					menuToolBar, MENUBARCMD_VISIBLE_INSERT, this, -1, null, true );
				item.setSelected(true);

				// Layout
				item = this.createCheckBoxMenuItem(
					menuToolBar, MENUBARCMD_VISIBLE_LAYOUT, this, -1, null, true );
				item.setSelected(true);

//				// Help
//				item = this.createCheckBoxMenuItem(
//					menuToolBar, MENUBARCMD_VISIBLE_HELP, this, -1, null, true );
//				item.setSelected(true);

				// Zoom
				item = this.createCheckBoxMenuItem(
					menuToolBar, MENUBARCMD_VISIBLE_ZOOM, this, -1, null, true );
				item.setSelected(true);
			}


			menuLayout.addSeparator();


			// Grid
			{
				final JMenu menuGrid = new JMenu(MENUBAR_GRID);
				menuGrid.setMnemonic( KeyEvent.VK_G );
				menuLayout.add(menuGrid);

				// plus grid
				this.createMenuItem(
					menuGrid, MENUBARCMD_PLUS_GRID, this, KeyEvent.VK_P,
					KeyStroke.getKeyStroke(KeyEvent.VK_I, shift + alt),
					true );

				// minus grid
				this.createMenuItem(
					menuGrid, MENUBARCMD_MINUS_GRID, this, KeyEvent.VK_M,
					KeyStroke.getKeyStroke(KeyEvent.VK_D, shift + alt),
					true );


				// grid visible
				this.createCheckBoxMenuItem(
					menuGrid, MENUBARCMD_GRID_VISIBLE, this, KeyEvent.VK_V,
					KeyStroke.getKeyStroke(KeyEvent.VK_G, shift + alt),
					true );


				// snap to grid
				this.createCheckBoxMenuItem(
					menuGrid, MENUBARCMD_SNAP_TO_GRID, this, KeyEvent.VK_S,
					KeyStroke.getKeyStroke(KeyEvent.VK_S, shift + alt),
					true );

			}

			menuLayout.addSeparator();



			// Zoom
			{
				final JMenu menuZoom = new JMenu(MENUBAR_ZOOM);
				menuZoom.setMnemonic( KeyEvent.VK_Z );
				menuLayout.add(menuZoom);

				// zoom in
				this.createMenuItem(
					menuZoom, MENUBARCMD_ZOOM_IN, this, KeyEvent.VK_I,
					KeyStroke.getKeyStroke(KeyEvent.VK_Z, shift + alt),
					true );

				// zoom out
				JMenuItem zoomOut = this.createMenuItem(
					menuZoom, MENUBARCMD_ZOOM_OUT, this, KeyEvent.VK_O,
					KeyStroke.getKeyStroke(KeyEvent.VK_O, shift + alt),
					true );
				zoomOut.setDisplayedMnemonicIndex(5);


				// default zoom
				this.createMenuItem(
					menuZoom, MENUBARCMD_DEFAULT_ZOOM, this, KeyEvent.VK_D,
					null, true );

				// zoom way out
				this.createMenuItem(
					menuZoom, MENUBARCMD_ZOOM_WAY_OUT, this, KeyEvent.VK_W,
					null, true );

				// auto zoom
				this.createCheckBoxMenuItem(
					menuZoom, MENUBARCMD_AUTO_ZOOM, this, KeyEvent.VK_A,
					null, true );

			}

			menuLayout.addSeparator();


			// lock
			this.createCheckBoxMenuItem(
				menuLayout, MENUBARCMD_LOCK, this, KeyEvent.VK_O,
				null, true );

		}



		// Arrange
		{
			final JMenu menuArrange = new JMenu(MENUBAR_ARRANGE);
			menuArrange.setMnemonic( KeyEvent.VK_A );
			menuBar.add(menuArrange);


			// move to front
			this.createMenuItem(
				menuArrange, MENUBARCMD_MOVE_TO_FRONT, this, KeyEvent.VK_F,
				KeyStroke.getKeyStroke(KeyEvent.VK_F, shortcutmask),
				false );

			// move to back
			this.createMenuItem(
				menuArrange, MENUBARCMD_MOVE_TO_BACK, this, KeyEvent.VK_B,
				KeyStroke.getKeyStroke(KeyEvent.VK_B, shortcutmask),
				false );

			menuArrange.addSeparator();

//			// mode
//			this.createCheckBoxMenuItem(
//				menuArrange, MENUBARCMD_MODE, this, KeyEvent.VK_M,
//				null, true );
//
//			menuArrange.addSeparator();


			// align figures
			this.createMenuItem(
				menuArrange, MENUBARCMD_AUTO_ARRANGEMENT, this, KeyEvent.VK_R,
				null, true );

/*
			final JMenu menuAlignObjects = new JMenu(MENUBAR_ALIGN_OBJECTS);
			menuAlignObjects.addMenuListener(this);
			menuAlignObjects.setMnemonic( KeyEvent.VK_O );
			menuArrange.add( menuAlignObjects );
			{
				final JMenuItem left = new JMenuItem(MENUBARCMD_ALIGN_LEFT);
				left.setActionCommand(MENUBARCMD_ALIGN_LEFT);
				left.addActionListener(this);
				left.setMnemonic( KeyEvent.VK_L );
				menuAlignObjects.add(left);

				final JMenuItem center = new JMenuItem(MENUBARCMD_ALIGN_CENTER);
				center.setActionCommand(MENUBARCMD_ALIGN_CENTER);
				center.addActionListener(this);
				center.setMnemonic( KeyEvent.VK_C );
				menuAlignObjects.add(center);

				final JMenuItem right = new JMenuItem(MENUBARCMD_ALIGN_RIGHT);
				right.setActionCommand(MENUBARCMD_ALIGN_RIGHT);
				right.addActionListener(this);
				right.setMnemonic( KeyEvent.VK_R );
				menuAlignObjects.add(right);

				final JMenuItem top = new JMenuItem(MENUBARCMD_ALIGN_TOP);
				top.setActionCommand(MENUBARCMD_ALIGN_TOP);
				top.addActionListener(this);
				top.setMnemonic( KeyEvent.VK_T );
				menuAlignObjects.add(top);

				final JMenuItem middle = new JMenuItem(MENUBARCMD_ALIGN_MIDDLE);
				middle.setActionCommand(MENUBARCMD_ALIGN_MIDDLE);
				middle.addActionListener(this);
				middle.setMnemonic( KeyEvent.VK_M );
				menuAlignObjects.add(middle);

				final JMenuItem bottom = new JMenuItem(MENUBARCMD_ALIGN_BOTTOM);
				bottom.setActionCommand(MENUBARCMD_ALIGN_BOTTOM);
				bottom.addActionListener(this);
				bottom.setMnemonic( KeyEvent.VK_B );
				menuAlignObjects.add(bottom);

			}
*/

		}


		// Properties
		{
			final JMenu menuProperties = new JMenu(MENUBAR_PROPERTIES);
			menuProperties.setMnemonic( KeyEvent.VK_P );
			menuBar.add(menuProperties);
			
			menuProperties.addMenuListener(this);
		}


		// Help
		{
			final JMenu menuHelp = new JMenu(MENUBAR_HELP);
			menuHelp.setMnemonic( KeyEvent.VK_H );
			menuBar.add(menuHelp);

/*
			// Look and Feel
			{
				final JMenu menuLaf = new JMenu(MENUBAR_LOOKANDFEEL);
				menuLaf.setMnemonic( KeyEvent.VK_L );
				menuHelp.add(menuLaf);

				// metal
				this.createMenuItem(
					menuLaf, MENUBARCMD_LAF_METAL, LAF_METAL, this, KeyEvent.VK_T,
					null, true );

				// motif
				this.createMenuItem(
					menuLaf, MENUBARCMD_LAF_MOTIF, LAF_MOTIF, this, KeyEvent.VK_M,
					null, true );

				// windows
				this.createMenuItem(
					menuLaf, MENUBARCMD_LAF_WINDOWS, LAF_WINDOWS, this, KeyEvent.VK_W,
					null, true );

				// windows classic
				this.createMenuItem(
					menuLaf, MENUBARCMD_LAF_WINDOWSCLASSIC, LAF_WINDOWSCLASSIC, this, KeyEvent.VK_C,
					null, true );

				// aqua
				this.createMenuItem(
					menuLaf, MENUBARCMD_LAF_AQUA, LAF_AQUA, this, KeyEvent.VK_A,
					null, true );
			}
*/

			// upgrade
			this.createMenuItem(
				menuHelp, MENUBARCMD_UPGRADE, this, KeyEvent.VK_U,
				null, true );

			menuHelp.addSeparator();

			// change log
			this.createMenuItem(
				menuHelp, MENUBARCMD_CHANGE_LOG, this, KeyEvent.VK_C,
				null, true );

			menuHelp.addSeparator();

			// proxy
			this.createMenuItem(
				menuHelp, MENUBARCMD_PROXY, this, KeyEvent.VK_P,
				null, true );

			menuHelp.addSeparator();

			// about
			this.createMenuItem(
				menuHelp, MENUBARCMD_ABOUT, this, KeyEvent.VK_A,
				null, true );

		}


		return true;

	}



	private JMenuItem createMenuItem(
		JMenu menu,
		String command,
		ActionListener l,
		int mnemonic,
		KeyStroke keyStroke,
		boolean enabled )
	{
		return this.createMenuItem(menu,command,command,l,mnemonic,keyStroke,enabled);
	}


	private JMenuItem createMenuItem(
		JMenu menu,
		String text,
		String command,
		ActionListener l,
		int mnemonic,
		KeyStroke keyStroke,
		boolean enabled )
	{
		final JMenuItem item = new JMenuItem(text);
		return this.createMenuItem_(menu,item,command,l,mnemonic,keyStroke,enabled);
	}


	private JMenuItem createRadioButtonMenuItem(
		JMenu menu,
		String command,
		ActionListener l,
		int mnemonic,
		KeyStroke keyStroke,
		boolean enabled )
	{
		final JMenuItem item = new JRadioButtonMenuItem(command);
		return this.createMenuItem_(menu,item,command,l,mnemonic,keyStroke,enabled);
	}

	private JCheckBoxMenuItem createCheckBoxMenuItem(
		JMenu menu,
		String command,
		ActionListener l,
		int mnemonic,
		KeyStroke keyStroke,
		boolean enabled )
	{
		final JMenuItem item = new JCheckBoxMenuItem(command);
		return (JCheckBoxMenuItem)this.createMenuItem_(menu,item,command,l,mnemonic,keyStroke,enabled);
	}


	private JMenuItem createToggleMenuItem(
		JMenu menu,
		String command,
		ActionListener l,
		int mnemonic,
		KeyStroke keyStroke,
		boolean enabled )
	{
		final JMenuItem item = new SGToggleMenuItem(command);
		return this.createMenuItem_(menu,item,command,l,mnemonic,keyStroke,enabled);
	}



	/**
	 * 
	 * @param node
	 * @param menu
	 * @param command
	 * @param l
	 * @return
	 */
	private JMenuItem createNodeMenuItem(
		SGINode node,
		JMenu menu,
		String command,
		ActionListener l )
	{
		return this.createNodeMenuItem(
			node, menu, command, l, -1, null, true );
	}



	private JMenuItem createNodeMenuItem(
		SGINode node,
		JMenu menu,
		String command,
		ActionListener l,
		int mnemonic,
		KeyStroke keyStroke,
		boolean enabled )
	{
		final NodeMenuItem item = new NodeMenuItem(command);
		item.setNode(node);
		return this.createMenuItem_(menu,item,command,l,mnemonic,keyStroke,enabled);
	}


	private JMenuItem createMenuItem_(
		JMenu menu,
		JMenuItem item,
		String command,
		ActionListener l,
		int mnemonic,
		KeyStroke keyStroke,
		boolean enabled )
	{
		item.setActionCommand(command);
		item.addActionListener(l);
		if( mnemonic!=-1 )
		{
			item.setMnemonic( mnemonic );
		}
		if( keyStroke!=null )
		{
			item.setAccelerator( keyStroke );
		}
		item.setEnabled(enabled);
		menu.add(item);
		return item;
	}







	/**
	 * 
	 */
	private JMenu getMenuFromMenuBar( final String menuName )
	{
		JMenuBar bar = this;
		for( int ii=0; ii<bar.getMenuCount(); ii++ )
		{
			JMenu menu = bar.getMenu(ii);
			String text = menu.getText();
			if( text.equals( menuName ) )
			{
				return menu;
			}
		}

		return null;
	}



	/**
	 * 
	 */
	private JMenu getMenu( final JMenu menu, final String menuName )
	{
		for( int ii=0; ii<menu.getItemCount(); ii++ )
		{
			JMenuItem item = menu.getItem(ii);

			// skip separators
			if( item==null )
			{
				continue;
			}

			if( item instanceof JMenu )
			{
				JMenu m = (JMenu)item;
				if( m.getText().equals(menuName) )
				{
					return m;
				}
			}
		}

		return null;
	}



	/**
	 * 
	 */
	private JMenuItem getMenuItem(
		final String menuName, final String itemName )
	{
		JMenu menu = this.getMenuFromMenuBar( menuName );
		if( menu==null )
		{
			return null;
		}

		return this.getMenuItem( menu, itemName );
	}



	/**
	 * 
	 */
	private JMenuItem getMenuItem(
		final JMenu menu, final String itemName )
	{
		for( int ii=0; ii<menu.getItemCount(); ii++ )
		{
			JMenuItem item = menu.getItem(ii);

			// skip separators
			if( item==null )
			{
				continue;
			}

			if( item instanceof JMenu )
			{
				JMenu menu_ = (JMenu)item;
				JMenuItem item_ = this.getMenuItem( menu_, itemName );
				if( item_!=null )
				{
					return item_;
				}
			}
			else
			{
				if( item.getText().equals(itemName) )
				{
					return item;
				}
			}
		}

		return null;
	}



	/**
	 * 
	 * @param menuName
	 * @return
	 */
	private ArrayList getMenuItemList( final String menuName )
	{
		JMenu menu = this.getMenuFromMenuBar( menuName );
		if( menu==null )
		{
			return null;
		}

		ArrayList list = new ArrayList();
		Component[] comArray= menu.getMenuComponents();
		for( int ii=0; ii<comArray.length; ii++ )
		{
			if( ( comArray[ii] instanceof JMenuItem ) == false )
			{
				continue;
			}

			list.add( comArray[ii] );
		}

		return list;
	}





	/**
	 * 
	 */
	private ArrayList mActionListenerList = new ArrayList();



	/**
	 * 
	 */
	public void addActionListener( final ActionListener listener )
	{
		this.mActionListenerList.add(listener);
	}



	/**
	 * 
	 */
	public void removeActionListener( ActionListener listener )
	{
		this.mActionListenerList.remove(listener);
	}



	/**
	 * 
	 */
	public void actionPerformed( ActionEvent e )
	{
		Object source = e.getSource();
		String command = e.getActionCommand();


		// set the toggle menu items
		if( source instanceof SGToggleMenuItem )
		{
			SGToggleMenuItem item = (SGToggleMenuItem)source;
			item.setSelected( !item.isSelected() );
		}


		// throw an action event to listeners
		ActionEvent e_ = new ActionEvent(
			this, e.getID(), e.getActionCommand(), e.getModifiers() );
		ArrayList list = this.mActionListenerList;
		for( int ii=0; ii<list.size(); ii++ )
		{
			final ActionListener el = (ActionListener)list.get(ii);
			el.actionPerformed(e_);
		}

	}



	/**
	 * 
	 * @param menuName
	 * @param itemName
	 * @return
	 */
	public boolean isMenuItemEnabled( final String menuName, final String itemName )
	{
		JMenuItem item = this.getMenuItem( menuName, itemName );
		if( item==null )
		{
			throw new IllegalArgumentException("item==null");
		}
		
		return item.isEnabled();
	}



	/**
	 * 
	 * @param menuName
	 * @param itemName
	 * @param b
	 */
	public void setMenuItemEnabled(
		final String menuName, final String itemName, final boolean b )
	{
		JMenuItem item = this.getMenuItem( menuName, itemName );
		if( item==null )
		{
			throw new IllegalArgumentException("item==null");
		}
		
		item.setEnabled(b);		
	}



	/**
	 * 
	 * @param menuName
	 * @param itemName
	 * @return
	 */
	public boolean isMenuItemSelected( final String menuName, final String itemName )
	{
		JMenuItem item = this.getMenuItem( menuName, itemName );
		if( item==null )
		{
			throw new IllegalArgumentException("item==null");
		}
		
		return item.isSelected();
	}



	/**
	 * 
	 * @param menuName
	 * @param itemName
	 * @param b
	 */
	public void setMenuItemSelected(
		final String menuName, final String itemName, final boolean b )
	{
		JMenuItem item = this.getMenuItem( menuName, itemName );
		if( item==null )
		{
			throw new IllegalArgumentException("item==null");
		}
		
		item.setSelected(b);
	}



	//
	// Menu event
	//


	/**
	 * 
	 */
	private ArrayList mMenuListenerList = new ArrayList();



	/**
	 * 
	 */
	public void addMenuListener( final MenuListener listener )
	{
		ArrayList list = this.mMenuListenerList;
		for( int ii=0; ii<list.size(); ii++ )
		{
			final MenuListener el = (MenuListener)list.get(ii);
			if( el.equals(listener) )
			{
				return;
			}
		}
		list.add(listener);
	}



	/**
	 * 
	 */
	public void removeActionListener( MenuListener listener )
	{
		ArrayList list = this.mMenuListenerList;
		for( int ii=list.size()-1; ii>=0; ii-- )
		{
			final MenuListener el = (MenuListener)list.get(ii);
			if( el.equals(listener) )
			{
				this.mMenuListenerList.remove(listener);
			}
		}
	}


	/**
	 * 
	 */
	public void menuSelected( MenuEvent e )
	{
		ArrayList list = this.mMenuListenerList;
		for( int ii=0; ii<list.size(); ii++ )
		{
			final MenuListener el = (MenuListener)list.get(ii);
			el.menuSelected(e);
		}
	}


	/**
	 * 
	 */
	public void menuDeselected( MenuEvent e )
	{
		ArrayList list = this.mMenuListenerList;
		for( int ii=0; ii<list.size(); ii++ )
		{
			final MenuListener el = (MenuListener)list.get(ii);
			el.menuDeselected(e);
		}
	}


	/**
	 * 
	 */
	public void menuCanceled( MenuEvent e )
	{
		ArrayList list = this.mMenuListenerList;
		for( int ii=0; ii<list.size(); ii++ )
		{
			final MenuListener el = (MenuListener)list.get(ii);
			el.menuCanceled(e);
		}
	}




	/**
	 * 
	 */
	public void setInsertToggleButtonsEnabled(
		final  boolean flag )
	{
		ArrayList itemList = this.getMenuItemList( MENUBAR_INSERT );
		for( int ii=0; ii<itemList.size(); ii++ )
		{
			SGToggleMenuItem item = (SGToggleMenuItem)itemList.get(ii);
			item.setEnabled( flag );
		}
	}


	/**
	 * 
	 */
	public void setInsertToggleItemsUnSelected()
	{
		ArrayList itemList = this.getMenuItemList( MENUBAR_INSERT );
		for( int ii=0; ii<itemList.size(); ii++ )
		{
			SGToggleMenuItem item = (SGToggleMenuItem)itemList.get(ii);
			item.setSelected( false );
		}
	}


	/**
	 * 
	 * @param itemName
	 * @return
	 */
	public boolean hasMenuItem( final String itemName )
	{
		return (this.getMenuItem( MENUBAR_INSERT, itemName )!=null);
	}


	/**
	 * 
	 * @param command
	 */
	public void setInsertToggleItemSelected( final String itemName, final boolean b )
	{
		if( this.hasMenuItem( itemName ) == false )
		{
			throw new IllegalArgumentException();
		}
		this.getMenuItem( MENUBAR_INSERT, itemName ).setSelected(b);
	}



	/**
	 * 
	 * @param command
	 */
	public boolean isInsertToggleItemSelected( final String itemName )
	{
		if( this.hasMenuItem( itemName ) == false )
		{
			throw new IllegalArgumentException();
		}
		return this.getMenuItem( MENUBAR_INSERT, itemName ).isSelected();
	}



	/**
	 * 
	 *
	 */
	public void createPropertyMenuBarItem( SGINode node, ActionListener l )
	{
		JMenu root = this.getMenuFromMenuBar( MENUBAR_PROPERTIES );
		root.removeAll();

		this.createMenuItem( node, root, l );
	}


	private void createMenuItem( SGINode node, JMenu parent, ActionListener l )
	{
		final ArrayList childList = node.getChildNodes();
		final String cText = node.getClassDescription();
		final String iText = node.getInstanceDescription();
		final String command = MENUBAR_PROPERTIES;
		final boolean pFlag = ( node instanceof SGIPropertyDialogObserver );

		// has child objects
		if( childList.size()!=0 )
		{
			if( cText!=null & iText!=null )
			{
				JMenu menu = new JMenu( cText );
				parent.add( menu );

				// property dialog observer
				if( pFlag )
				{
					this.createNodeMenuItem( node, menu, iText, l );
				}

				// add child
				for( int ii=0; ii<childList.size(); ii++ )
				{
					SGINode child = (SGINode)childList.get(ii);
					this.createMenuItem( child, menu, l );
				}
			}
		}
		else
		{
			// property dialog observer
			if( pFlag )
			{
				if( iText!=null )
				{
					this.createNodeMenuItem( node, parent, iText, l );
				}
			}
		}

	}



	/**
	 * 
	 * @param itemName
	 * @return
	 */
	public boolean isToolBarMenuSelected( final String itemName )
	{
		final JMenu layout = this.getMenuFromMenuBar( MENUBAR_LAYOUT );
		final JMenu tb = this.getMenu( layout, MENUBAR_TOOL_BAR );	
		final JMenuItem item = this.getMenuItem( tb, itemName );
		if( item!=null )
		{
			return item.isSelected();
		}
		throw new IllegalArgumentException();
	}


	/**
	 * 
	 * @param itemName
	 * @param b
	 */
	public void setToolBarMenuItemSelected( final String itemName, final boolean b )
	{
		final JMenu layout = this.getMenuFromMenuBar( MENUBAR_LAYOUT );
		final JMenu tb = this.getMenu( layout, MENUBAR_TOOL_BAR );
		final JMenuItem item = this.getMenuItem( tb, itemName );
		if( item!=null )
		{
			item.setSelected(b);
		}
		else
		{
			throw new IllegalArgumentException();
		}
	}



}


