noyes.java

来自「FuncPlotter is a combined Java applicati」· Java 代码 · 共 142 行

/*====================================================================*\

NoYes.java

No-Yes option enumeration.

------------------------------------------------------------------------

This file is part of FuncPlotter, a combined Java application and applet
for plotting explicit functions in one variable.
Copyright 2005-2007 Andy Morgan-Richards.

FuncPlotter 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 3 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, see <http://www.gnu.org/licenses/>.

\*====================================================================*/


// PACKAGE


package util;

//----------------------------------------------------------------------


// NO-YES OPTION ENUMERATION


public enum NoYes
{

////////////////////////////////////////////////////////////////////////
//  Constants
////////////////////////////////////////////////////////////////////////

    NO  ( "no",     "false",    "No" ),
    YES ( "yes",    "true",     "Yes" );

////////////////////////////////////////////////////////////////////////
//  Constructors
////////////////////////////////////////////////////////////////////////

    private NoYes( String key1,
                   String key2,
                   String text )
    {
        this.key1 = key1;
        this.key2 = key2;
        this.text = text;
    }

    //------------------------------------------------------------------

////////////////////////////////////////////////////////////////////////
//  Class methods
////////////////////////////////////////////////////////////////////////

    public static NoYes get( String key )
    {
        for ( NoYes value : values( ) )
        {
            if ( value.key1.equals( key ) || value.key2.equals( key ) )
                return value;
        }
        return null;
    }

    //------------------------------------------------------------------

    public static NoYes get( boolean value )
    {
        return ( value ? YES : NO );
    }

    //------------------------------------------------------------------

    public static String getKey( boolean value )
    {
        return get( value ).getKey( );
    }

    //------------------------------------------------------------------

    public static String toString( boolean value )
    {
        return get( value ).toString( );
    }

    //------------------------------------------------------------------

////////////////////////////////////////////////////////////////////////
//  Instance methods : overriding methods
////////////////////////////////////////////////////////////////////////

    public String toString( )
    {
        return text;
    }

    //------------------------------------------------------------------

////////////////////////////////////////////////////////////////////////
//  Instance methods
////////////////////////////////////////////////////////////////////////

    public String getKey( )
    {
        return key1;
    }

    //------------------------------------------------------------------

    public boolean toBoolean( )
    {
        return ( (this == NO) ? false : true );
    }

    //------------------------------------------------------------------

////////////////////////////////////////////////////////////////////////
//  Instance variables
////////////////////////////////////////////////////////////////////////

    private String  key1;
    private String  key2;
    private String  text;

}

//----------------------------------------------------------------------