MenuController.java

//
//  @(#)MenuController.java		4/2002
//
//  Copyright 2002 Zachary DelProposto. All rights reserved.
//  Use is subject to license terms.
//
//
//  This program is free software; you can redistribute it and/or modify
//  it under the terms of the GNU General Public License as published by
//  the Free Software Foundation; either version 2 of the License, or
//  (at your option) any later version.
//
//  This program is distributed in the hope that it will be useful,
//  but WITHOUT ANY WARRANTY; without even the implied warranty of
//  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
//  GNU General Public License for more details.
//
//  You should have received a copy of the GNU General Public License
//  along with this program; if not, write to the Free Software
//  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
//  Or from http://www.gnu.org/
//

package dip.gui.map;

import dip.gui.ClientFrame;
import dip.gui.ClientMenu;

import javax.swing.AbstractButton;
import javax.swing.JMenuItem;
import java.awt.event.ActionListener;

/**
*	Controls the interaction between the menu (ClientMenu) and 
*	the Map display (MapPanel). 
*	<p>
*
*
*/
final class MenuController
{
	private final MapPanel mapPanel;
	
	
	/** Creates a MenuController */
	public MenuController(MapPanel mapPanel)
	{
		this.mapPanel = mapPanel;
		
		// Print / Export
		registerExportItems();
		setExportingEnabled(true);
		
		// other stuff... 
	}// MenuController()
	
	
	/** Cleanup / should be called by MapPanel.close() to reset Menu state. */
	public void close()
	{
		setExportingEnabled(false);
	}// close()
	
	
	/** enable / disable Print & Export menu items */
	private void setExportingEnabled(boolean value)
	{
		ClientMenu cm = mapPanel.getClientFrame().getClientMenu();
		cm.setEnabled(ClientMenu.FILE_PRINT, value);
		cm.setEnabled(ClientMenu.FILE_EXPORT_JPG, value);
		cm.setEnabled(ClientMenu.FILE_EXPORT_PNG, value);
		cm.setEnabled(ClientMenu.FILE_EXPORT_SVG, value);
		cm.setEnabled(ClientMenu.FILE_EXPORT_PDF, value);
	}// setExportingEnabled()
	
	
	/** register us with Print & Export menu items */
	private void registerExportItems()
	{
		// remove any pre-existing listeners for these items
		ClientMenu cm = mapPanel.getClientFrame().getClientMenu();
		
		JMenuItem mi = cm.getMenuItem(ClientMenu.FILE_PRINT);
		removeActionListeners(mi);
		mi.addActionListener(new MapPanelSVGAction.Print(mapPanel));
		
		mi = cm.getMenuItem(ClientMenu.FILE_EXPORT_JPG);
		removeActionListeners(mi);
		mi.addActionListener(new MapPanelSVGAction.ExportJPG(mapPanel));
		
		mi = cm.getMenuItem(ClientMenu.FILE_EXPORT_PNG);
		removeActionListeners(mi);
		mi.addActionListener(new MapPanelSVGAction.ExportPNG(mapPanel));
		
		mi = cm.getMenuItem(ClientMenu.FILE_EXPORT_PDF);
		removeActionListeners(mi);
		mi.addActionListener(new MapPanelSVGAction.ExportPDF(mapPanel));
		
		mi = cm.getMenuItem(ClientMenu.FILE_EXPORT_SVG);
		removeActionListeners(mi);
		mi.addActionListener(new MapPanelSVGAction.ExportSVG(mapPanel));
	}// registerExportItems()
	
	
	
	
	
	/** Removes all action listeners associated with an AbstractButton */
	private void removeActionListeners(AbstractButton ab)
	{
		ActionListener[] al = ab.getActionListeners();
		for(int i=0; i<al.length; i++)
		{
			ab.removeActionListener(al[i]);
		}
	}// removeActionListeners()
	
	
	
}// class MenuController