Package org.eclipse.jdt.core

Class BufferChangedEvent

java.lang.Object

java.util.EventObject

org.eclipse.jdt.core.BufferChangedEvent

All Implemented Interfaces:

Serializable

public class BufferChangedEvent
extends EventObject

A buffer changed event describes how a buffer has changed. These events are used in IBufferChangedListener notifications.

For text insertions, getOffset is the offset of the first inserted character, getText is the inserted text, and getLength is 0.

For text removals, getOffset is the offset of the first removed character, getText is null, and getLength is the length of the text that was removed.

For replacements (including IBuffer.setContents), getOffset is the offset of the first replaced character, getText is the replacement text, and getLength is the length of the original text that was replaced.

When a buffer is closed, getOffset is 0, getLength is 0, and getText is null.

See Also:

• IBuffer
• Serialized Form

Restriction:

This class is not intended to be subclassed by clients.

Field Summary

Fields inherited from class java.util.EventObject

source

Constructor Summary

Constructors

Constructor	Description
BufferChangedEvent(IBuffer buffer, int offset, int length, String text)	Creates a new buffer changed event indicating that the given buffer has changed.

Method Summary

Modifier and Type	Method	Description
IBuffer	getBuffer()	Returns the buffer which has changed.
int	getLength()	Returns the length of text removed or replaced in the buffer, or 0 if text has been inserted into the buffer.
int	getOffset()	Returns the index of the first character inserted, removed, or replaced in the buffer.
String	getText()	Returns the text that was inserted, the replacement text, or null if text has been removed.

Methods inherited from class java.util.EventObject

getSource, toString

Methods inherited from class java.lang.Object

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

Constructor Details

BufferChangedEvent

public BufferChangedEvent(IBuffer buffer,
 int offset,
 int length,
 String text)

Creates a new buffer changed event indicating that the given buffer has changed.

Parameters:

buffer - the given buffer

offset - the given offset

length - the given length

text - the given text

Method Details

getBuffer

public IBuffer getBuffer()

Returns the buffer which has changed.

Returns:

the buffer affected by the change

getLength

public int getLength()

Returns the length of text removed or replaced in the buffer, or 0 if text has been inserted into the buffer.

Returns:

the length of the original text fragment modified by the buffer change ( 0 in case of insertion).

getOffset

public int getOffset()

Returns the index of the first character inserted, removed, or replaced in the buffer.

Returns:

the source offset of the textual manipulation in the buffer

getText

public String getText()

Returns the text that was inserted, the replacement text, or null if text has been removed.

Returns:

the text corresponding to the buffer change ( null in case of deletion).