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Class com.cometway.jerminal.EmacsKeyListener

com.cometway.jerminal.EmacsKeyListener

public class EmacsKeyListener

implements JerminalKeyListener

alt

buffer

This is the input buffer.

ctrl

historyIndex

index

This is the cursor index of the input buffer.

insert

This flag determines whether input should be inserted at the cursor or overwritten

interpret

This flag determines whether this key listener should interpret the input as Emacs keys

killBuffer

This buffer is the copy/paste buffer

parent

This keylistener's parent JerminalWindow, keyboard input is read from here

shift

tmpHistory

EmacsKeyListener(JerminalWindow)

This constructor assigns the parent to the JerminalWindow parameter.

back()

This helper method moves the cursor and the input buffer back one character.

backspace()

This helper method tells the JerminalWindow to delete a character backwards.

beginningOfLine()

This helper method moves the cursor and the input buffer index to the beginning.

complete()

This method handles command completion and file/path completion.

defaultKey(KeyEvent)

This helper method simply displays the key inputed to the JerminalWindow.

delete()

This helper method deletes one character at the input buffer index.

deleteWordBack()

This helper method deletes up to the previous whitespace or path separator or beginning of line from the input buffer index backwards.

deleteWordForward()

This helper method deletes up to the next whitespace or path separator or end of line from the input buffer index forward.

endOfLine()

This helper method moves the cursor and the input buffer index to the end.

forward()

This helper method moves the cursor and the input buffer forward one character.

getBufferIndex()

getInputBuffer()

getInsert()

getInterpret()

getJerminalWindow()

getKillBuffer()

keyBreak()

This helper method displays a '^C' on a line by itself to the JerminalWindow.

keyPressed(KeyEvent)

These methods implement the KeyListener interface

keyReleased(KeyEvent)

keyTyped(KeyEvent)

kill()

This helper method deletes all the characters from the input buffer index to the end of the input buffer and stores that String in the killBuffer.

lineDiff(String, String)

This helper method helps determine how many lines the Strings passed in take up in the JerminalWindow.

newline()

This helper method starts a newline in the JerminalWindow and flushes the input buffer to the JerminalWindow's JerminalSession (thus giving it a command).

next()

This helper method displays the next command in the command history to the JerminalWindow and sets the cursor and the input buffer index to the end.

previous()

This helper method displays the previous command in the command history to the JerminalWindow and sets the cursor and the input buffer index to the end.

setBufferIndex(int)

setInputBuffer(String)

setInsert(boolean)

These methods implement the JerminalKeyListener interface

setInterpret(boolean)

setJerminalWindow(JerminalWindow)

setKillBuffer(String)

wordBack()

This helper method moves the cursor and the input buffer index to the previous whitespace or path separator from the input buffer index backwards.

wordForward()

This helper method moves the cursor and the input buffer index to the next whitespace or path separator from the input buffer index forward.

yank()

This helper method inserts the killBuffer at the input buffer index and updates the JerminalWindow.

 public JerminalWindow parent

This keylistener's parent JerminalWindow, keyboard input is read from here

 public StringBuffer buffer

This is the input buffer. keystrokes are appended to this buffer until a newline is read

 public int index

This is the cursor index of the input buffer. This should be in constant offset to the JerminalWindow's cursor

 public boolean interpret

This flag determines whether this key listener should interpret the input as Emacs keys

 public boolean insert

This flag determines whether input should be inserted at the cursor or overwritten

 public String killBuffer

This buffer is the copy/paste buffer

 protected int historyIndex

 protected String tmpHistory

 protected boolean shift

 protected boolean ctrl

 protected boolean alt

 public EmacsKeyListener(JerminalWindow parent)

This constructor assigns the parent to the JerminalWindow parameter. All fields are initialized in this constructor.

 public void setInsert(boolean i)

These methods implement the JerminalKeyListener interface

 public boolean getInsert()

 public void setInterpret(boolean i)

 public boolean getInterpret()

 public void setKillBuffer(String buff)

 public String getKillBuffer()

 public void setInputBuffer(String buff)

 public String getInputBuffer()

 public void setBufferIndex(int i)

 public int getBufferIndex()

 public void setJerminalWindow(JerminalWindow window)

 public JerminalWindow getJerminalWindow()

 public void keyPressed(KeyEvent event)

These methods implement the KeyListener interface

 public void keyReleased(KeyEvent event)

 public void keyTyped(KeyEvent event)

 protected void complete()

This method handles command completion and file/path completion. The list of commands are given as a property in the JerminalWindow called 'commands_directory', and in this directory, this method will attempt to complete on commands. Anything that is not the first word in the input buffer is assumed to be a file/path.

 protected void defaultKey(KeyEvent event)

This helper method simply displays the key inputed to the JerminalWindow.

 protected void newline()

This helper method starts a newline in the JerminalWindow and flushes the input buffer to the JerminalWindow's JerminalSession (thus giving it a command). The indeces and cursor is reset to the beginning.

 protected void backspace()

This helper method tells the JerminalWindow to delete a character backwards. The same is done in the input buffer.

 protected void beginningOfLine()

This helper method moves the cursor and the input buffer index to the beginning.

 protected void endOfLine()

This helper method moves the cursor and the input buffer index to the end.

 protected void back()

This helper method moves the cursor and the input buffer back one character.

 protected void forward()

This helper method moves the cursor and the input buffer forward one character.

 protected void previous()

This helper method displays the previous command in the command history to the JerminalWindow and sets the cursor and the input buffer index to the end.

 protected void next()

This helper method displays the next command in the command history to the JerminalWindow and sets the cursor and the input buffer index to the end.

 protected void keyBreak()

This helper method displays a '^C' on a line by itself to the JerminalWindow. Whatever was in the input buffer is cleared and nothing is sent to the JerminalSession.

 protected void delete()

This helper method deletes one character at the input buffer index.

 protected void kill()

This helper method deletes all the characters from the input buffer index to the end of the input buffer and stores that String in the killBuffer. The JerminalWindow is also updated.

 protected void yank()

This helper method inserts the killBuffer at the input buffer index and updates the JerminalWindow.

 protected void deleteWordForward()

This helper method deletes up to the next whitespace or path separator or end of line from the input buffer index forward. The JerminalWindow is also updated.

 protected void deleteWordBack()

This helper method deletes up to the previous whitespace or path separator or beginning of line from the input buffer index backwards. The JerminalWindow is also updated.

 protected void wordForward()

This helper method moves the cursor and the input buffer index to the next whitespace or path separator from the input buffer index forward. The JerminalWindow is updated.

 protected void wordBack()

This helper method moves the cursor and the input buffer index to the previous whitespace or path separator from the input buffer index backwards. The JerminalWindow is updated.

 protected boolean lineDiff(String in1,
                            String in2)

This helper method helps determine how many lines the Strings passed in take up in the JerminalWindow. This method returns true if the 2 strings take up the same number of lines.

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