popupcontroller2d.java

化学图形处理软件

/*
 *  $RCSfile$
 *  $Author: egonw $
 *  $Date: 2007-04-16 10:40:19 +0200 (Mon, 16 Apr 2007) $
 *  $Revision: 8201 $
 *
 *  Copyright (C) 1997-2007  The Chemistry Development Kit (CDK) project
 *
 *  Contact: [e-mail]
 *
 *  This program is free software; you can redistribute it and/or
 *  modify it under the terms of the GNU Lesser General Public License
 *  as published by the Free Software Foundation; either version 2.1
 *  of the License, or (at your option) any later version.
 *  All I ask is that proper credit is given for my work, which includes
 *  - but is not limited to - adding the above copyright notice to the beginning
 *  of your source code files, and to any copyright notice that you may distribute
 *  with programs based on this work.
 *
 *  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 Lesser General Public License for more details.
 *
 *  You should have received a copy of the GNU Lesser General Public License
 *  along with this program; if not, write to the Free Software
 *  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 */
package org.openscience.cdk.controller;

import java.awt.event.MouseEvent;
import java.util.HashMap;
import java.util.Hashtable;
import java.util.Vector;

import javax.swing.JButton;

import org.openscience.cdk.interfaces.IChemModel;
import org.openscience.cdk.interfaces.IChemObject;
import org.openscience.cdk.renderer.Renderer2DModel;
import org.openscience.cdk.tools.LoggingTool;

/**
 * Class that acts on MouseEvents and KeyEvents.
 *
 * @author         egonw
 * @cdk.created    2004-03-26
 * @cdk.keyword    mouse events
 * @cdk.keyword    popup menus
 * @cdk.module     control
 * @cdk.require    swing
 */
public class PopupController2D extends Controller2D {

	private LoggingTool logger;

	private static Hashtable popupMenus = null;

	public PopupController2D(IChemModel chemModel, Renderer2DModel r2dm, Controller2DModel c2dm, Vector lastAction, JButton moveButton, HashMap funcgroups) {
		this(chemModel,r2dm,c2dm);
		this.lastAction=lastAction;
		this.moveButton=moveButton;
		this.setFuncgroupsmap(funcgroups);
	}
	
	public PopupController2D(IChemModel chemModel, Renderer2DModel r2dm, Controller2DModel c2dm) {
        super(chemModel, r2dm, c2dm);
		logger = new LoggingTool(this);

		if (PopupController2D.popupMenus == null) {
			PopupController2D.popupMenus = new Hashtable();
		}
	}

	public PopupController2D(IChemModel chemModel, Renderer2DModel r2dm) {
		super(chemModel, r2dm);
	}

	/**
	 *  manages all actions that will be invoked when a mouse button is pressed
	 *
	 *@param  event  MouseEvent object
	 */
	public void mousePressed(MouseEvent event)
	{
    isUndoableChange = false;
		int[] screenCoords = {event.getX(), event.getY()};
		int[] mouseCoords = getWorldCoordinates(screenCoords);
		int mouseX = mouseCoords[0];
		int mouseY = mouseCoords[1];

		logger.debug("MousePressed Event Props: mode=", c2dm.getDrawModeString());
        if (logger.isDebugEnabled()) {
            logger.debug("   trigger=" + event.isPopupTrigger() +
				/* ", Button number: " + event.getButton() + */
				", Click count: " + event.getClickCount());
        }

		if (event.isPopupTrigger() || 
            (event.getModifiers() & MouseEvent.BUTTON3_MASK) != 0)
		{
			logger.info("Popup menu triggered...");
			popupMenuForNearestChemObject(mouseX, mouseY, event);
		} else {
            super.mousePressed(event);
		}
	}

	/**
	 *  Sets the popupMenu attribute of the Controller2D object
	 *
	 *@param  someClass  The new popupMenu value
	 *@param  menu        The new popupMenu value
	 */
	public void setPopupMenu(Class someClass, CDKPopupMenu menu) {
		PopupController2D.popupMenus.put(someClass.getName(), menu);
	}


	/**
	 *  Returns the popup menu for this IChemObject if it is set, and null
	 *  otherwise.
	 *
	 *@param  someClass  Description of the Parameter
	 *@return             The popupMenu value
	 */
	public CDKPopupMenu getPopupMenu(Class classSearched) {
        logger.debug("Searching popup for: ", classSearched.getName());
        while (classSearched.getName().startsWith("org.openscience.cdk")) {
            logger.debug("Searching popup for: ", classSearched.getName());
            if (PopupController2D.popupMenus.containsKey(classSearched.getName())) {
                return (CDKPopupMenu) PopupController2D.popupMenus.get(classSearched.getName());
            } else {
                logger.debug("  recursing into super class");
                classSearched = classSearched.getSuperclass();
            }
		}
        return null;
	}

	private void popupMenuForNearestChemObject(int mouseX, int mouseY, MouseEvent event)
	{
		IChemObject objectInRange = getChemObjectInRange(mouseX, mouseY);
		CDKPopupMenu popupMenu = getPopupMenu(objectInRange.getClass());
    if (popupMenu != null)
		{
			popupMenu.setSource(objectInRange);
			logger.debug("Set popup menu source to: ", objectInRange);
			popupMenu.show(event.getComponent(), event.getX(), event.getY());
		} else
		{
			logger.warn("Popup menu is null! Could not set source!");
		}
	}

}