org.crsh.console
Interface ConsoleDriver

All Superinterfaces:

Closeable

public interface ConsoleDriver

extends Closeable

The contract between the console and the underlying stream.

getWidth

int getWidth()

Returns the term width in chars. When the value is not positive it means the value could not be determined.

Returns:

the term width

getHeight

int getHeight()

Returns the term height in chars. When the value is not positive it means the value could not be determined.

Returns:

the term height

getProperty

String getProperty(String name)

Retrieves the value of a property specified by this TermIO

Parameters:

name - the name of the property

Returns:

value of the property

takeAlternateBuffer

boolean takeAlternateBuffer()
                            throws IOException

Take control of the alternate buffer. When the alternate buffer is already used nothing happens. The buffer switch should occur when then flush() method is invoked.

Returns:

true if the alternate buffer is shown

Throws:

IOException

releaseAlternateBuffer

boolean releaseAlternateBuffer()
                               throws IOException

Release control of the alternate buffer. When the normal buffer is already used nothing happens. The buffer switch should occur when then flush() method is invoked.

Returns:

true if the usual buffer is shown

Throws:

IOException

flush

void flush()
           throws IOException

Flush output.

Throws:

IOException - any io exception

write

void write(CharSequence s)
           throws IOException

Write a string.

Parameters:

s - the string to write

Throws:

IOException - any io exception

write

void write(CharSequence s,
           int start,
           int end)
           throws IOException

Write a string.

Parameters:

s - the string to write

start - the index of the first char

end - the index of the last char

Throws:

IOException - any io exception

write

void write(char c)
           throws IOException

Write a char.

Parameters:

c - the char to write

Throws:

IOException - any io exception

write

void write(Style d)
           throws IOException

Write a style.

Parameters:

d - the data to write

Throws:

IOException - any io exception

writeDel

void writeDel()
              throws IOException

Delete the char under the cursor.

Throws:

IOException - any io exception

writeCRLF

void writeCRLF()
               throws IOException

Write a CRLF.

Throws:

IOException - any io exception

cls

void cls()
         throws IOException

Clear screen.

Throws:

IOException - any io exception

moveRight

boolean moveRight(char c)
                  throws IOException

Move the cursor right.

Parameters:

c - the char skipped over

Returns:

true if the cursor moved.

Throws:

IOException - any io exception

moveLeft

boolean moveLeft()
                 throws IOException

Move the cursor left.

Returns:

true if the cursor moved

Throws:

IOException - any io exception