processing.app.syntax

Class DefaultInputHandler

Object

KeyAdapter

InputHandler

DefaultInputHandler

All Implemented Interfaces:

KeyListener, EventListener

Direct Known Subclasses:

PdeInputHandler

public class DefaultInputHandler
extends InputHandler

The default input handler. It maps sequences of keystrokes into actions and inserts key typed events into the text area.

Nested Class Summary

Nested classes/interfaces inherited from class InputHandler

InputHandler.backspace, InputHandler.backspace_word, InputHandler.clipboard_copy, InputHandler.clipboard_cut, InputHandler.clipboard_paste, InputHandler.delete, InputHandler.delete_word, InputHandler.document_end, InputHandler.document_home, InputHandler.end, InputHandler.home, InputHandler.insert_break, InputHandler.insert_char, InputHandler.insert_tab, InputHandler.MacroRecorder, InputHandler.next_char, InputHandler.next_line, InputHandler.next_page, InputHandler.next_word, InputHandler.NonRecordable, InputHandler.NonRepeatable, InputHandler.overwrite, InputHandler.prev_char, InputHandler.prev_line, InputHandler.prev_page, InputHandler.prev_word, InputHandler.repeat, InputHandler.Wrapper

Field Summary

Fields inherited from class InputHandler

BACKSPACE, BACKSPACE_WORD, CLIPBOARD_COPY, CLIPBOARD_CUT, CLIPBOARD_PASTE, CONTEXT_AWARE_HOME_END, DELETE, DELETE_WORD, DOCUMENT_END, DOCUMENT_HOME, END, HOME, INSERT_BREAK, INSERT_CHAR, INSERT_TAB, NEXT_CHAR, NEXT_LINE, NEXT_PAGE, NEXT_WORD, OVERWRITE, PREV_CHAR, PREV_LINE, PREV_PAGE, PREV_WORD, REPEAT, SELECT_DOC_END, SELECT_DOC_HOME, SELECT_END, SELECT_HOME, SELECT_NEXT_CHAR, SELECT_NEXT_LINE, SELECT_NEXT_PAGE, SELECT_NEXT_WORD, SELECT_PREV_CHAR, SELECT_PREV_LINE, SELECT_PREV_PAGE, SELECT_PREV_WORD, SMART_HOME_END_PROPERTY

Constructor Summary

Constructors

Constructor and Description
DefaultInputHandler() Creates a new input handler with no key bindings defined.

Method Summary

Modifier and Type	Method and Description
void	addDefaultKeyBindings() Sets up the default key bindings.
void	addKeyBinding(String keyBinding, ActionListener action) Adds a key binding to this input handler.
InputHandler	copy() Returns a copy of this input handler that shares the same key bindings.
void	keyPressed(KeyEvent evt) Handle a key pressed event.
void	keyTyped(KeyEvent evt) Handle a key typed event.
static KeyStroke	parseKeyStroke(String keyStroke) Converts a string to a keystroke.
void	removeAllKeyBindings() Removes all key bindings from this input handler.
void	removeKeyBinding(String keyBinding) Removes a key binding from this input handler.

Methods inherited from class InputHandler

executeAction, findWordEnd, findWordStart, getAction, getActionName, getActions, getMacroRecorder, getRepeatCount, getTextArea, grabNextKeyStroke, handleInputMethodCommit, isRepeatEnabled, setMacroRecorder, setRepeatCount, setRepeatEnabled

Methods inherited from class KeyAdapter

keyReleased

Methods inherited from class Object

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

Constructor Detail

DefaultInputHandler

public DefaultInputHandler()

Creates a new input handler with no key bindings defined.

Method Detail

addDefaultKeyBindings

public void addDefaultKeyBindings()

Sets up the default key bindings.

Specified by:

addDefaultKeyBindings in class InputHandler

addKeyBinding

public void addKeyBinding(String keyBinding,
                          ActionListener action)

Adds a key binding to this input handler. The key binding is a list of white space separated key strokes of the form [modifiers+]key where modifier is C for Control, A for Alt, or S for Shift, and key is either a character (a-z) or a field name in the KeyEvent class prefixed with VK_ (e.g., BACK_SPACE)

Specified by:

addKeyBinding in class InputHandler

Parameters:

keyBinding - The key binding

action - The action

removeKeyBinding

public void removeKeyBinding(String keyBinding)

Removes a key binding from this input handler. This is not yet implemented.

Specified by:

removeKeyBinding in class InputHandler

Parameters:

keyBinding - The key binding

removeAllKeyBindings

public void removeAllKeyBindings()

Removes all key bindings from this input handler.

Specified by:

removeAllKeyBindings in class InputHandler

copy

public InputHandler copy()

Returns a copy of this input handler that shares the same key bindings. Setting key bindings in the copy will also set them in the original.

Specified by:

copy in class InputHandler

keyPressed

public void keyPressed(KeyEvent evt)

Handle a key pressed event. This will look up the binding for the key stroke and execute it.

Specified by:

keyPressed in interface KeyListener

Overrides:

keyPressed in class KeyAdapter

keyTyped

public void keyTyped(KeyEvent evt)

Handle a key typed event. This inserts the key into the text area.

Specified by:

keyTyped in interface KeyListener

Overrides:

keyTyped in class KeyAdapter

parseKeyStroke

public static KeyStroke parseKeyStroke(String keyStroke)

Converts a string to a keystroke. The string should be of the form modifiers+shortcut where modifiers is any combination of A for Alt, C for Control, S for Shift or M for Meta, and shortcut is either a single character, or a keycode name from the KeyEvent class, without the VK_ prefix.

Parameters:

keyStroke - A string description of the key stroke