RE: Document types

["SSGAS400 [Chennai]" <SSGAS400@xxxxxxxxxx>]

> 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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