RE: Document types

> > Hi All,
> > 
> > The below given pgm is having errors while compilingdue to the
> > folowing.Could anyone can help me out of this problem and make this pgm
> > runsuccessful.
> > 
> > 1.  return "fieldTextCase" - fieldTextCase is not decalred inside the
> > code and no such variable is present in JDK1.3
> > 2.  undefined variable or class name : FormattedDocument.
> > 
> > Pls. rectify this and send me across.
> > 
> > Thanks and Regards,
> > Vijay DY.
> > 
> >
> --------------------------------------------------------------------------
> >
> --------------------------------------------------------------------------
> > --------------------
> > 
> > > -----Original Message-----
> > > From:     Geert Van Landeghem [SMTP:gvl@reynderseti.be]
> > > Sent:     Friday, May 26, 2000 12:43 AM
> > > To:       JAVA400-L@MIDRANGE.COM
> > > Subject:  Document types
> > > 
> > > Hi,
> > > 
> > > Has anyone used or written subclasses of the PlainDocument class? I'm
> > > looking for Documenttypes
> > > that allow only alphanumeric input with limited length, a valid date
> and
> > > numeric input (with specified length and decimals)
> > > So I'm looking for a "TextDocument","DateDocument" and
> "NumericDocument"
> > > class. I would like to write these 
> > > classes myself but don't have the time...
> > > 
> > > Hasn't IBM released some beans with this specific behaviour?
> (comparable
> > > to
> > > DDS-field descriptions)
> > > 
> > > Any help would be appreciated
> >     [>]  
> > 
> >     Hello,
> > 
> >     Here is a simple class I whipped up as an example for
> > "TextDocument".  It allows you
> >     to set the maximum number of characters entered into a text field
> > and it will automatically
> >     force lower or upper case it desired.  The "NumericDocument" is
> > similar and should be 
> >     very simple.  You may want to consider having a "IntegerDocument"
> > and a "DecimalDocument".
> >     I have build a number of these for different projects.
> > "IntegerDocument" is the simplest since validation is
> >     the easiest (just accept a series of numbers).  
> > 
> >     With a "IntegerDocument" I usually have a maximum value and minimum
> > value property instead of a "maximum characters property" since
> >     this provides more control and gets one away from thinking of set
> > positions.
> > 
> >     Note:
> >     As with all entry validation in Swing avoid using keyevents.  We had
> > a number of contractors try this and its wrong!  You always control
> input
> > via the 
> >     Document.  Remember keyevents don't work if one uses cut and paste
> > or some non keyboard entry.  Also, remember that in MVC architecture
> > values 
> >     are also coming from the model.
> > 
> >     Here is the code for a "TextDocument":
> > 
> >     --------------------------------------------------------------
> > 
> >     import java.awt.Toolkit;
> >     import javax.swing.text.*;
> > 
> >     /**
> >      * @author Timothy Sullivan
> >      * @version 1.0
> >      */
> >     public class TextDocument extends PlainDocument
> >     {
> >             // Special constant that allows unlimited character entry.
> >       public static int UNLIMITED = -1;
> >             
> >             // Constants that control case.
> >       public final static int UPPER_OR_LOWER = 0;
> >       public final static int UPPER = 1;
> >       public final static int LOWER = 2;
> > 
> >       private int fieldMaxCharacters = UNLIMITED;
> > 
> >       /**
> >         * TextDocument constructor comment.
> >         */
> >       public TextDocument()
> >       {
> >         super();
> >       }
> > 
> >       /**
> >        * @author Timothy Sullivan
> >        */
> >       public TextDocument(int maxCharacters)
> >       {
> >         this();
> >         setMaxCharacters(maxCharacters);
> >       }
> > 
> >       /**
> >          * TextDocument constructor comment.
> >          * @param c javax.swing.text.AbstractDocument.Content
> >                      * @author Timothy Sullivan
> >          */
> >       protected TextDocument(AbstractDocument.Content c)
> >       {
> >         super(c);
> >       }
> > 
> > 
> >       /**
> >          * Gets the textCase property (int) value.
> >          * @return The textCase property value.
> >          * @see #setTextCase
> >          * @author Timothy Sullivan
> >          */
> >       public int getTextCase()
> >       {
> >         return fieldTextCase;
> >       }
> >             
> >       /**
> >        * 
> >        */
> >       public void insertString(int offset, String s,AttributeSet
> > attibuteSet) throws BadLocationException
> >       {
> >         if (s == null)
> >           return;
> >         try
> >         {
> >           if (getMaxCharacters() != FormattedDocument.UNLIMITED)
> >           {
> >             if ((getLength() + s.length()) > getMaxCharacters())
> >             {
> >               formatError();
> >               return;
> >             }
> >           }
> >         }
> >         catch (Exception ex)
> >         {
> >           formatError();
> >           return;
> >         }
> > 
> >         switch (getTextCase())
> >         {
> >           case UPPER :
> >             super.insertString(offset, s.toUpperCase(), attibuteSet);
> >             break;
> >           case LOWER :
> >             super.insertString(offset, s.toLowerCase(), attibuteSet);
> >             break;
> >           default :
> >             super.insertString(offset, s, attibuteSet);
> >         }
> >       }
> > 
> >       /**
> >        * Sets the textCase property (int) value.
> >        * @param textCase The new value for the property.
> >        * @see #getTextCase
> >              * @author Timothy Sullivan
> >        */
> >       public void setTextCase(int textCase)
> >       {
> >         fieldTextCase = textCase;
> >       }
> >       /**
> >        * @author Timothy Sullivan
> >        */
> >       protected void formatError()
> >       {
> >         //Toolkit.getDefaultToolkit().beep();
> >       }
> >       /**
> >        * @author Timothy Sullivan
> >        */
> >       public int getMaxCharacters()
> >       {
> >         return fieldMaxCharacters;
> >       }
> >       /**
> >        * @author Timothy Sullivan
> >        */
> >       protected boolean isValidLength(String s)
> >       {
> >         if (getMaxCharacters() == FormattedDocument.UNLIMITED)
> >           return true;
> > 
> >         if (s.length() > getMaxCharacters())
> >           return false;
> > 
> >         return true;
> >       }
> >       /**
> >        * @author Timothy Sullivan
> >        */
> >       public void setMaxCharacters(int maxCharacters)
> >       {
> >         fieldMaxCharacters = maxCharacters;
> >       }
> >     }
> > 
> > >   
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