oracle.javatools.buffer

Class ForwardingTextBufferListener

java.lang.Object

oracle.javatools.buffer.ForwardingTextBufferListener

All Implemented Interfaces:

java.util.EventListener, TextBufferListener

public class ForwardingTextBufferListener
extends java.lang.Object
implements TextBufferListener

A support class to forward text buffer events for a decorating text buffer.

This class implements the weak listener semantics documented by the TextBuffer interface. However, it should be noted that those semantics essentially no longer apply for text buffers obtained from a an IDE TextNode because the text node keeps a duplicate list of listeners with strong references.

Field Summary

Fields inherited from interface oracle.javatools.buffer.TextBufferListener

EDIT_BEGIN_ATTRIBUTE, EDIT_END_ATTRIBUTE, EOL_TYPE_ATTRIBUTE, MODIFIED_ATTRIBUTE, READ_ONLY_ATTRIBUTE, RELOAD_END_ATTRIBUTE, RELOAD_START_ATTRIBUTE

Constructor Summary

Constructors

Constructor and Description
ForwardingTextBufferListener(TextBuffer buffer)

Method Summary

Modifier and Type	Method and Description
void	addTextBufferListener(TextBufferListener listener)
void	attributeUpdate(TextBuffer buffer, int attribute) Provides notification regarding a change to one of the buffer attributes.
void	insertUpdate(TextBuffer buffer, int offset, int count, char[] insertedData) Provides notification about an insertion into the TextBuffer.
void	removeTextBufferListener(TextBufferListener listener)
void	removeUpdate(TextBuffer buffer, int offset, int count, char[] removedData) Provides notification about a removal from the TextBuffer.

Methods inherited from class java.lang.Object

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

Constructor Detail

ForwardingTextBufferListener

public ForwardingTextBufferListener(TextBuffer buffer)

Method Detail

addTextBufferListener

public void addTextBufferListener(TextBufferListener listener)

removeTextBufferListener

public void removeTextBufferListener(TextBufferListener listener)

attributeUpdate

public void attributeUpdate(TextBuffer buffer,
                            int attribute)

Description copied from interface: TextBufferListener

Provides notification regarding a change to one of the buffer attributes. The possible attributes are defined in this interface.

Specified by:

attributeUpdate in interface TextBufferListener

Parameters:

buffer - the TextBuffer that changed.

attribute - the attribute that changed

insertUpdate

public void insertUpdate(TextBuffer buffer,
                         int offset,
                         int count,
                         char[] insertedData)

Description copied from interface: TextBufferListener

Provides notification about an insertion into the TextBuffer.

Specified by:

insertUpdate in interface TextBufferListener

Parameters:

buffer - the TextBuffer that changed.

offset - the offset where the insert took place

count - the number of characters inserted (insertedData.length)

insertedData - an array of the removed characters.

removeUpdate

public void removeUpdate(TextBuffer buffer,
                         int offset,
                         int count,
                         char[] removedData)

Description copied from interface: TextBufferListener

Provides notification about a removal from the TextBuffer.

Specified by:

removeUpdate in interface TextBufferListener

Parameters:

buffer - the TextBuffer that changed.

offset - the offset of the first removed character.

count - the number of characters removed (removedData.length)

removedData - an array of the removed characters