sk.uniba.euromath.editor.textEditor.requests.editTextRequests
Class DeleteTextRequest

java.lang.Object
  org.eclipse.gef.Request
      sk.uniba.euromath.editor.textEditor.requests.editTextRequests.EditTextRequest
          sk.uniba.euromath.editor.textEditor.requests.editTextRequests.DeleteTextRequest

All Implemented Interfaces:

IRequestSpecialization

public final class DeleteTextRequest
extends EditTextRequest
implements IRequestSpecialization

Request to delete text from specified position of specified size. Position is specified by ITextPieceKeeper and offset. Size specifies deletion direction and length of text to delete. So effect is deletion of text from offset(include offset character) in ITextPieceKeeper to offset + size (including).

Author:

Martin Kollar 17.11.2005

Constructor Summary

DeleteTextRequest(ITextPieceKeeper source, int offset, int length, Direction direction)
Constructor.

Method Summary

Direction	getDirection()
int	getLength() Returns length of text to delete.
int	getOffset() Returns position in text piece from where text should be deleted.
String	getSpecialization() Returns request specialization - unique string.
void	setLength(int length)
void	setOffset(int offset)

Methods inherited from class sk.uniba.euromath.editor.textEditor.requests.editTextRequests.EditTextRequest

getSource

Methods inherited from class org.eclipse.gef.Request

getExtendedData, getType, setExtendedData, setType

Methods inherited from class java.lang.Object

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

Constructor Detail

DeleteTextRequest

public DeleteTextRequest(ITextPieceKeeper source,
                         int offset,
                         int length,
                         Direction direction)

Constructor.

Parameters:

source - ITextPieceKeeper where was the deletion called

offset - offset in text piece(ITextPieceKeeper's text) from where text should be deleted, must be valid (in range of text piece). Character at this offset position is also deleted.

size - length of text to delete(absolute value of size) Length can have any positive value(not bounded by text piece), but text at that length must exists (bounded by text of whole document), otherwise exception is thrown in process of execution. NOT ZERO.

direction - of deletion, one of Direction.Left, Direction.Right

Method Detail

getLength

public int getLength()

Returns length of text to delete.

Returns:

length of text to delete.

getOffset

public int getOffset()

Returns position in text piece from where text should be deleted. Character at this offset position should be also deleted.

Returns:

offset in text piece (ITextPieceKeeper's text)

getDirection

public Direction getDirection()

getSpecialization

public String getSpecialization()

Description copied from interface: IRequestSpecialization

Returns request specialization - unique string.

Specified by:

getSpecialization in interface IRequestSpecialization

Returns:

request specialization string

setOffset

public void setOffset(int offset)

Parameters:

offset - the offset to set

setLength

public void setLength(int length)

Parameters:

length - the length to set