CheckboxMenuItem.java

/*    
    Copyright (C) Paul Falstad and Iain Sharp
    
    This file is part of CircuitJS1.

    CircuitJS1 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.

    CircuitJS1 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 CircuitJS1.  If not, see <http://www.gnu.org/licenses/>.
*/

package com.lushprojects.circuitjs1.client;

import com.google.gwt.user.client.ui.MenuItem;
import com.google.gwt.user.client.Command;
import com.google.gwt.core.client.GWT;

public class CheckboxMenuItem extends MenuItem implements Command {
	private boolean on=false;
	private String name="";
	private String shortcut="";
	private Command extcmd=null;
	static String checkBoxHtml="<div style=\"display:inline-block;width:15px;\">";


	
	public CheckboxMenuItem(String s){
		super(s, (Command)null);
		super.setScheduledCommand(this);
		name=s;
		setState(false);
	}
	
	public CheckboxMenuItem(String s, Command cmd){
		super(s, (Command)null);
		super.setScheduledCommand(this);
		extcmd=cmd;
		name=s;
		setState(false);
	}
	
	public CheckboxMenuItem(String s, String c, Command cmd){
		this(s, cmd);
		shortcut=c;
	}
	
	public CheckboxMenuItem(String s, String c){
		this(s);
		shortcut=c;
	}
	
	public void addShortcut(String s) {
		shortcut=s;
	}
	
	public void execute() {
		setState(!on);
		if (extcmd!=null)
			extcmd.execute();
        	
      }

	public void setState(boolean newstate) {
		on = newstate;
		String s;
        if (on)
 //       	super.setHTML("✔ "+name);
        	s = checkBoxHtml+"✔</div>"+name;
        else
//        	super.setHTML("  "+name);
        	s = checkBoxHtml+" </div>"+name;
        if (shortcut!="")
        	if (shortcut.length()==1) {
        	    s = s + "<div style=\"display:inline-block;width:20px;right:10px;text-align:center;position:absolute;\">"+shortcut+"</div>";
        	} else {
        	    // add some space so menu text doesn't overlap shortcut
        	    s = s+ "<span style=\"display:inline-block; width: 60px;\"></span>";
        	    s = s + "<div style=\"display:inline-block;right:10px;text-align:right;position:absolute;\">"+shortcut+"</div>";
        	}
        setHTML(s);
	}
	
	public boolean getState(){
		return on;
	}

}