org.pentaho.reporting.engine.classic.core.modules.gui.commonswing
Class LengthLimitingDocument

java.lang.Object
  javax.swing.text.AbstractDocument
      javax.swing.text.PlainDocument
          org.pentaho.reporting.engine.classic.core.modules.gui.commonswing.LengthLimitingDocument

All Implemented Interfaces:

Serializable, Document

public class LengthLimitingDocument
extends PlainDocument

This Document restricts the size of the contained plain text to the given number of characters.

Author:

Thomas Morgner

See Also:

Serialized Form

Nested Class Summary

Nested classes/interfaces inherited from class javax.swing.text.AbstractDocument

AbstractDocument.AbstractElement, AbstractDocument.AttributeContext, AbstractDocument.BranchElement, AbstractDocument.Content, AbstractDocument.DefaultDocumentEvent, AbstractDocument.ElementEdit, AbstractDocument.LeafElement

Field Summary

Fields inherited from class javax.swing.text.PlainDocument

lineLimitAttribute, tabSizeAttribute

Fields inherited from class javax.swing.text.AbstractDocument

BidiElementName, ContentElementName, ElementNameAttribute, ParagraphElementName, SectionElementName

Fields inherited from interface javax.swing.text.Document

StreamDescriptionProperty, TitleProperty

Constructor Summary

LengthLimitingDocument()
Creates a new LengthLimitingDocument, with no limitation.

LengthLimitingDocument(int maxlen)
Creates a new LengthLimitingDocument with the given limitation.

Method Summary

int	getMaxLength() Returns the defined maximum number characters for this document.
void	insertString(int offs, String str, AttributeSet a) Inserts the string into the document.
void	setMaxLength(int maxlen) Sets the maximum number of characters for this document.

Methods inherited from class javax.swing.text.PlainDocument

getDefaultRootElement, getParagraphElement

Methods inherited from class javax.swing.text.AbstractDocument

addDocumentListener, addUndoableEditListener, createPosition, dump, getAsynchronousLoadPriority, getBidiRootElement, getDocumentFilter, getDocumentListeners, getDocumentProperties, getEndPosition, getLength, getListeners, getProperty, getRootElements, getStartPosition, getText, getText, getUndoableEditListeners, putProperty, readLock, readUnlock, remove, removeDocumentListener, removeUndoableEditListener, render, replace, setAsynchronousLoadPriority, setDocumentFilter, setDocumentProperties

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

LengthLimitingDocument

public LengthLimitingDocument()

Creates a new LengthLimitingDocument, with no limitation.

LengthLimitingDocument

public LengthLimitingDocument(int maxlen)

Creates a new LengthLimitingDocument with the given limitation. No more than maxlen characters can be added to the document. If maxlen is negative, then no length check is performed.

Parameters:

maxlen - the maximum number of elements in this document

Method Detail

setMaxLength

public void setMaxLength(int maxlen)

Sets the maximum number of characters for this document. Existing characters are not removed.

Parameters:

maxlen - the maximum number of characters in this document.

getMaxLength

public int getMaxLength()

Returns the defined maximum number characters for this document.

Returns:

the maximum number of characters

insertString

public void insertString(int offs,
                         String str,
                         AttributeSet a)
                  throws BadLocationException

Inserts the string into the document. If the length of the document would violate the maximum characters restriction, then the string is cut down so that

Specified by:

insertString in interface Document

Overrides:

insertString in class PlainDocument

Parameters:

offs - the offset, where the string should be inserted into the document

str - the string that should be inserted

a - the attribute set assigned for the document

Throws:

BadLocationException - if the offset is not correct