processing.mode.java

Class JavaInputHandler

java.lang.Object

java.awt.event.KeyAdapter

processing.app.syntax.InputHandler

processing.app.syntax.DefaultInputHandler

processing.app.syntax.PdeInputHandler

processing.mode.java.JavaInputHandler

All Implemented Interfaces:

KeyListener, EventListener

public class JavaInputHandler
extends PdeInputHandler

Filters key events for tab expansion/indent/etc. This is very old code that we'd love to replace with a smarter parser/formatter, rather than continuing to hack this class.

Nested Class Summary

Nested classes/interfaces inherited from class processing.app.syntax.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 processing.app.syntax.PdeInputHandler

editor

Fields inherited from class processing.app.syntax.InputHandler

BACKSPACE, BACKSPACE_WORD, CLIPBOARD_COPY, CLIPBOARD_CUT, CLIPBOARD_PASTE, CONTEXT_AWARE_HOME_END, DELETE, DELETE_WORD, DOCUMENT_END, DOCUMENT_HOME, END, grabAction, HOME, INSERT_BREAK, INSERT_CHAR, INSERT_TAB, NEXT_CHAR, NEXT_LINE, NEXT_PAGE, NEXT_WORD, OVERWRITE, PREV_CHAR, PREV_LINE, PREV_PAGE, PREV_WORD, recorder, repeat, REPEAT, repeatCount, 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
JavaInputHandler(Editor editor)

Method Summary

Modifier and Type	Method and Description
protected int	calcBraceIndent(int index, char[] contents) Walk back from 'index' until the brace that seems to be the beginning of the current block, and return the number of spaces found on that line.
protected int	calcLineStart(int index, char[] contents) Return the index for the first character on this line.
protected int	calcSpaceCount(int index, char[] contents) Calculate the number of spaces on this line.
boolean	handlePressed(KeyEvent event) Intercepts key pressed events for JEditTextArea.
boolean	handleTyped(KeyEvent event)

Methods inherited from class processing.app.syntax.PdeInputHandler

handleInputMethodCommit, isMnemonic, keyPressed, keyTyped

Methods inherited from class processing.app.syntax.DefaultInputHandler

addDefaultKeyBindings, addKeyBinding, copy, parseKeyStroke, removeAllKeyBindings, removeKeyBinding

Methods inherited from class processing.app.syntax.InputHandler

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

Methods inherited from class java.awt.event.KeyAdapter

keyReleased

Methods inherited from class java.lang.Object

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

Constructor Detail

JavaInputHandler

public JavaInputHandler(Editor editor)

Method Detail

handlePressed

public boolean handlePressed(KeyEvent event)

Intercepts key pressed events for JEditTextArea.

Called by JEditTextArea inside processKeyEvent(). Note that this won't intercept actual characters, because those are fired on keyTyped().

Overrides:

handlePressed in class PdeInputHandler

Returns:

true if the event has been handled (to remove it from the queue)

handleTyped

public boolean handleTyped(KeyEvent event)

Overrides:

handleTyped in class PdeInputHandler

calcLineStart

protected int calcLineStart(int index,
                            char[] contents)

Return the index for the first character on this line.

calcSpaceCount

protected int calcSpaceCount(int index,
                             char[] contents)

Calculate the number of spaces on this line.

calcBraceIndent

protected int calcBraceIndent(int index,
                              char[] contents)

Walk back from 'index' until the brace that seems to be the beginning of the current block, and return the number of spaces found on that line.