org.apache.hadoop.hbase.hbtop.terminal.impl

Class ScreenBuffer

java.lang.Object

org.apache.hadoop.hbase.hbtop.terminal.impl.ScreenBuffer

@InterfaceAudience.Private
public class ScreenBuffer
extends Object

Represents a buffer of the terminal screen for double-buffering.

Field Summary

Fields

Modifier and Type	Field and Description
private Cell[][]	buffer
private int	columns
private int	cursorColumn
private int	cursorRow
private boolean	cursorVisible
private Cell[][]	physical
private int	rows

Constructor Summary

Constructors

Constructor and Description
ScreenBuffer()

Method Summary

Modifier and Type	Method and Description
void	clear()
void	endOfLine(int column, int row)
void	flush(PrintWriter output)
private void	flushRow(int row, StringBuilder sb, Attributes lastAttributes)
CursorPosition	getCursorPosition()
void	hideCursor()
void	putChar(int column, int row, char ch, Attributes attributes)
void	putString(int column, int row, String string, Attributes attributes)
void	reallocate(int columns, int rows)
void	setCursorPosition(int column, int row)

Methods inherited from class java.lang.Object

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

Field Detail

columns

private int columns

rows

private int rows

buffer

private Cell[][] buffer

physical

private Cell[][] physical

cursorVisible

private boolean cursorVisible

cursorColumn

private int cursorColumn

cursorRow

private int cursorRow

Constructor Detail

ScreenBuffer

public ScreenBuffer()

Method Detail

reallocate

public void reallocate(int columns,
                       int rows)

clear

public void clear()

flush

public void flush(PrintWriter output)

flushRow

private void flushRow(int row,
                      StringBuilder sb,
                      Attributes lastAttributes)

getCursorPosition

public CursorPosition getCursorPosition()

setCursorPosition

public void setCursorPosition(int column,
                              int row)

hideCursor

public void hideCursor()

putString

public void putString(int column,
                      int row,
                      String string,
                      Attributes attributes)

putChar

public void putChar(int column,
                    int row,
                    char ch,
                    Attributes attributes)

endOfLine

public void endOfLine(int column,
                      int row)