Module java.desktop

Package javax.swing.text

Class DocumentFilter.FilterBypass

java.lang.Object

javax.swing.text.DocumentFilter.FilterBypass

Enclosing class:

DocumentFilter

public abstract static class DocumentFilter.FilterBypass
extends Object

Used as a way to circumvent calling back into the Document to change it. Document implementations that wish to support a DocumentFilter must provide an implementation that will not callback into the DocumentFilter when the following methods are invoked from the DocumentFilter.

Since:

1.4

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	FilterBypass()	Constructor for subclasses to call.

Method Summary

Modifier and Type	Method	Description
abstract Document	getDocument()	Returns the Document the mutation is occurring on.
abstract void	insertString(int offset, String string, AttributeSet attr)	Inserts the specified text, bypassing the DocumentFilter.
abstract void	remove(int offset, int length)	Removes the specified region of text, bypassing the DocumentFilter.
abstract void	replace(int offset, int length, String string, AttributeSet attrs)	Deletes the region of text from offset to offset + length, and replaces it with text.

Methods declared in class java.lang.Object

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

Constructor Details

FilterBypass

protected FilterBypass()

Constructor for subclasses to call.

Method Details

getDocument

public abstract Document getDocument()

Returns the Document the mutation is occurring on.

Returns:

Document that remove/insertString will operate on

remove

public abstract void remove(int offset,
 int length)
                     throws BadLocationException

Removes the specified region of text, bypassing the DocumentFilter.

Parameters:

offset - the offset from the beginning >= 0

length - the number of characters to remove >= 0

Throws:

BadLocationException - some portion of the removal range was not a valid part of the document. The location in the exception is the first bad position encountered.

insertString

public abstract void insertString(int offset,
 String string,
 AttributeSet attr)
                           throws BadLocationException

Inserts the specified text, bypassing the DocumentFilter.

Parameters:

offset - the offset into the document to insert the content >= 0. All positions that track change at or after the given location will move.

string - the string to insert

attr - the attributes to associate with the inserted content. This may be null if there are no attributes.

Throws:

BadLocationException - the given insert position is not a valid position within the document

replace

public abstract void replace(int offset,
 int length,
 String string,
 AttributeSet attrs)
                      throws BadLocationException

Deletes the region of text from offset to offset + length, and replaces it with text.

Parameters:

offset - Location in Document

length - Length of text to delete

string - Text to insert, null indicates no text to insert

attrs - AttributeSet indicating attributes of inserted text, null is legal.

Throws:

BadLocationException - the given insert is not a valid position within the document