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1072 lines
41 KiB
Java
1072 lines
41 KiB
Java
/*
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* InputHandler.java - Manages key bindings and executes actions
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* Copyright (C) 1999 Slava Pestov
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*
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* You may use and modify this package for any purpose. Redistribution is
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* permitted, in both source and binary form, provided that this notice
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* remains intact in all source distributions of this package.
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*/
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package processing.app.syntax;
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import javax.swing.text.*;
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import javax.swing.JPopupMenu;
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import java.awt.event.*;
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import java.awt.Component;
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import java.util.*;
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/**
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* An input handler converts the user's key strokes into concrete actions.
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* It also takes care of macro recording and action repetition.<p>
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*
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* This class provides all the necessary support code for an input
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* handler, but doesn't actually do any key binding logic. It is up
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* to the implementations of this class to do so.
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*
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* @author Slava Pestov
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* @version $Id: InputHandler.java,v 1.1 2005/04/09 02:30:37 benfry Exp $
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* @see org.gjt.sp.jedit.textarea.DefaultInputHandler
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*/
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public abstract class InputHandler extends KeyAdapter
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{
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/**
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* If this client property is set to Boolean.TRUE on the text area,
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* the home/end keys will support 'smart' BRIEF-like behaviour
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* (one press = start/end of line, two presses = start/end of
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* viewscreen, three presses = start/end of document). By default,
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* this property is not set.
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*/
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public static final String SMART_HOME_END_PROPERTY = "InputHandler.homeEnd";
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public static final ActionListener BACKSPACE = new backspace();
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public static final ActionListener BACKSPACE_WORD = new backspace_word();
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public static final ActionListener DELETE = new delete();
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public static final ActionListener DELETE_WORD = new delete_word();
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public static final ActionListener END = new end(false);
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public static final ActionListener DOCUMENT_END = new document_end(false);
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public static final ActionListener SELECT_END = new end(true);
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public static final ActionListener SELECT_DOC_END = new document_end(true);
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public static final ActionListener INSERT_BREAK = new insert_break();
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public static final ActionListener INSERT_TAB = new insert_tab();
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public static final ActionListener HOME = new home(false);
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public static final ActionListener DOCUMENT_HOME = new document_home(false);
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public static final ActionListener SELECT_HOME = new home(true);
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public static final ActionListener SELECT_DOC_HOME = new document_home(true);
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public static final ActionListener NEXT_CHAR = new next_char(false);
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public static final ActionListener NEXT_LINE = new next_line(false);
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public static final ActionListener NEXT_PAGE = new next_page(false);
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public static final ActionListener NEXT_WORD = new next_word(false);
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public static final ActionListener SELECT_NEXT_CHAR = new next_char(true);
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public static final ActionListener SELECT_NEXT_LINE = new next_line(true);
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public static final ActionListener SELECT_NEXT_PAGE = new next_page(true);
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public static final ActionListener SELECT_NEXT_WORD = new next_word(true);
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public static final ActionListener OVERWRITE = new overwrite();
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public static final ActionListener PREV_CHAR = new prev_char(false);
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public static final ActionListener PREV_LINE = new prev_line(false);
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public static final ActionListener PREV_PAGE = new prev_page(false);
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public static final ActionListener PREV_WORD = new prev_word(false);
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public static final ActionListener SELECT_PREV_CHAR = new prev_char(true);
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public static final ActionListener SELECT_PREV_LINE = new prev_line(true);
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public static final ActionListener SELECT_PREV_PAGE = new prev_page(true);
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public static final ActionListener SELECT_PREV_WORD = new prev_word(true);
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public static final ActionListener REPEAT = new repeat();
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public static final ActionListener TOGGLE_RECT = new toggle_rect();
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// Default action
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public static final ActionListener INSERT_CHAR = new insert_char();
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private static Hashtable actions;
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static
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{
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actions = new Hashtable();
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actions.put("backspace",BACKSPACE);
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actions.put("backspace-word",BACKSPACE_WORD);
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actions.put("delete",DELETE);
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actions.put("delete-word",DELETE_WORD);
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actions.put("end",END);
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actions.put("select-end",SELECT_END);
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actions.put("document-end",DOCUMENT_END);
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actions.put("select-doc-end",SELECT_DOC_END);
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actions.put("insert-break",INSERT_BREAK);
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actions.put("insert-tab",INSERT_TAB);
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actions.put("home",HOME);
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actions.put("select-home",SELECT_HOME);
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actions.put("document-home",DOCUMENT_HOME);
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actions.put("select-doc-home",SELECT_DOC_HOME);
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actions.put("next-char",NEXT_CHAR);
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actions.put("next-line",NEXT_LINE);
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actions.put("next-page",NEXT_PAGE);
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actions.put("next-word",NEXT_WORD);
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actions.put("select-next-char",SELECT_NEXT_CHAR);
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actions.put("select-next-line",SELECT_NEXT_LINE);
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actions.put("select-next-page",SELECT_NEXT_PAGE);
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actions.put("select-next-word",SELECT_NEXT_WORD);
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actions.put("overwrite",OVERWRITE);
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actions.put("prev-char",PREV_CHAR);
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actions.put("prev-line",PREV_LINE);
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actions.put("prev-page",PREV_PAGE);
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actions.put("prev-word",PREV_WORD);
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actions.put("select-prev-char",SELECT_PREV_CHAR);
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actions.put("select-prev-line",SELECT_PREV_LINE);
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actions.put("select-prev-page",SELECT_PREV_PAGE);
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actions.put("select-prev-word",SELECT_PREV_WORD);
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actions.put("repeat",REPEAT);
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actions.put("toggle-rect",TOGGLE_RECT);
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actions.put("insert-char",INSERT_CHAR);
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}
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/**
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* Returns a named text area action.
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* @param name The action name
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*/
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public static ActionListener getAction(String name)
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{
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return (ActionListener)actions.get(name);
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}
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/**
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* Returns the name of the specified text area action.
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* @param listener The action
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*/
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public static String getActionName(ActionListener listener)
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{
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Enumeration en = getActions();
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while(en.hasMoreElements())
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{
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String name = (String)en.nextElement();
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ActionListener _listener = getAction(name);
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if(_listener == listener)
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return name;
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}
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return null;
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}
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/**
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* Returns an enumeration of all available actions.
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*/
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public static Enumeration getActions()
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{
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return actions.keys();
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}
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/**
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* Adds the default key bindings to this input handler.
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* This should not be called in the constructor of this
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* input handler, because applications might load the
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* key bindings from a file, etc.
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*/
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public abstract void addDefaultKeyBindings();
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/**
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* Adds a key binding to this input handler.
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* @param keyBinding The key binding (the format of this is
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* input-handler specific)
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* @param action The action
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*/
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public abstract void addKeyBinding(String keyBinding, ActionListener action);
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/**
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* Removes a key binding from this input handler.
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* @param keyBinding The key binding
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*/
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public abstract void removeKeyBinding(String keyBinding);
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/**
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* Removes all key bindings from this input handler.
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*/
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public abstract void removeAllKeyBindings();
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/**
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* Grabs the next key typed event and invokes the specified
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* action with the key as a the action command.
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* @param action The action
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*/
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public void grabNextKeyStroke(ActionListener listener)
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{
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grabAction = listener;
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}
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/**
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* Returns if repeating is enabled. When repeating is enabled,
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* actions will be executed multiple times. This is usually
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* invoked with a special key stroke in the input handler.
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*/
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public boolean isRepeatEnabled()
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{
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return repeat;
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}
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/**
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* Enables repeating. When repeating is enabled, actions will be
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* executed multiple times. Once repeating is enabled, the input
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* handler should read a number from the keyboard.
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*/
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public void setRepeatEnabled(boolean repeat)
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{
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this.repeat = repeat;
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}
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/**
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* Returns the number of times the next action will be repeated.
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*/
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public int getRepeatCount()
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{
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return (repeat ? Math.max(1,repeatCount) : 1);
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}
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/**
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* Sets the number of times the next action will be repeated.
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* @param repeatCount The repeat count
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*/
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public void setRepeatCount(int repeatCount)
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{
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this.repeatCount = repeatCount;
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}
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/**
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* Returns the macro recorder. If this is non-null, all executed
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* actions should be forwarded to the recorder.
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*/
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public InputHandler.MacroRecorder getMacroRecorder()
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{
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return recorder;
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}
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/**
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* Sets the macro recorder. If this is non-null, all executed
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* actions should be forwarded to the recorder.
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* @param recorder The macro recorder
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*/
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public void setMacroRecorder(InputHandler.MacroRecorder recorder)
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{
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this.recorder = recorder;
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}
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/**
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* Returns a copy of this input handler that shares the same
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* key bindings. Setting key bindings in the copy will also
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* set them in the original.
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*/
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public abstract InputHandler copy();
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/**
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* Executes the specified action, repeating and recording it as
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* necessary.
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* @param listener The action listener
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* @param source The event source
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* @param actionCommand The action command
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*/
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public void executeAction(ActionListener listener, Object source,
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String actionCommand)
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{
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// create event
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ActionEvent evt = new ActionEvent(source,
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ActionEvent.ACTION_PERFORMED,
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actionCommand);
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// don't do anything if the action is a wrapper
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// (like EditAction.Wrapper)
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if(listener instanceof Wrapper)
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{
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listener.actionPerformed(evt);
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return;
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}
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// remember old values, in case action changes them
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boolean _repeat = repeat;
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int _repeatCount = getRepeatCount();
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// execute the action
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if(listener instanceof InputHandler.NonRepeatable)
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listener.actionPerformed(evt);
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else
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{
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for(int i = 0; i < Math.max(1,repeatCount); i++)
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listener.actionPerformed(evt);
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}
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// do recording. Notice that we do no recording whatsoever
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// for actions that grab keys
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if(grabAction == null)
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{
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if(recorder != null)
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{
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if(!(listener instanceof InputHandler.NonRecordable))
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{
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if(_repeatCount != 1)
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recorder.actionPerformed(REPEAT,String.valueOf(_repeatCount));
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recorder.actionPerformed(listener,actionCommand);
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}
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}
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// If repeat was true originally, clear it
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// Otherwise it might have been set by the action, etc
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if(_repeat)
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{
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repeat = false;
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repeatCount = 0;
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}
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}
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}
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/**
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* Returns the text area that fired the specified event.
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* @param evt The event
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*/
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public static JEditTextArea getTextArea(EventObject evt)
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{
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if(evt != null)
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{
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Object o = evt.getSource();
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if(o instanceof Component)
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{
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// find the parent text area
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Component c = (Component)o;
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for(;;)
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{
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if(c instanceof JEditTextArea)
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return (JEditTextArea)c;
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else if(c == null)
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break;
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if(c instanceof JPopupMenu)
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c = ((JPopupMenu)c)
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.getInvoker();
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else
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c = c.getParent();
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}
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}
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}
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// this shouldn't happen
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System.err.println("BUG: getTextArea() returning null");
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System.err.println("Report this to Slava Pestov <sp@gjt.org>");
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return null;
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}
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// protected members
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/**
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* If a key is being grabbed, this method should be called with
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* the appropriate key event. It executes the grab action with
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* the typed character as the parameter.
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*/
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protected void handleGrabAction(KeyEvent evt)
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{
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// Clear it *before* it is executed so that executeAction()
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// resets the repeat count
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ActionListener _grabAction = grabAction;
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grabAction = null;
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executeAction(_grabAction,evt.getSource(),
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String.valueOf(evt.getKeyChar()));
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}
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// protected members
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protected ActionListener grabAction;
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protected boolean repeat;
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protected int repeatCount;
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protected InputHandler.MacroRecorder recorder;
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/**
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* If an action implements this interface, it should not be repeated.
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* Instead, it will handle the repetition itself.
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*/
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public interface NonRepeatable {}
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/**
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* If an action implements this interface, it should not be recorded
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* by the macro recorder. Instead, it will do its own recording.
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*/
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public interface NonRecordable {}
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/**
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* For use by EditAction.Wrapper only.
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* @since jEdit 2.2final
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*/
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public interface Wrapper {}
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/**
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* Macro recorder.
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*/
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public interface MacroRecorder
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{
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void actionPerformed(ActionListener listener,
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String actionCommand);
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}
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public static class backspace implements ActionListener
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{
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public void actionPerformed(ActionEvent evt)
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{
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JEditTextArea textArea = getTextArea(evt);
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if(!textArea.isEditable())
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{
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textArea.getToolkit().beep();
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return;
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}
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if(textArea.getSelectionStart()
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!= textArea.getSelectionEnd())
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{
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textArea.setSelectedText("");
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}
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else
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{
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int caret = textArea.getCaretPosition();
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if(caret == 0)
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{
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textArea.getToolkit().beep();
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return;
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}
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try
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{
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textArea.getDocument().remove(caret - 1,1);
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}
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catch(BadLocationException bl)
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{
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bl.printStackTrace();
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}
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}
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}
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}
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public static class backspace_word implements ActionListener
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{
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public void actionPerformed(ActionEvent evt)
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{
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JEditTextArea textArea = getTextArea(evt);
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int start = textArea.getSelectionStart();
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if(start != textArea.getSelectionEnd())
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{
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textArea.setSelectedText("");
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}
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int line = textArea.getCaretLine();
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int lineStart = textArea.getLineStartOffset(line);
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int caret = start - lineStart;
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String lineText = textArea.getLineText(textArea
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.getCaretLine());
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if(caret == 0)
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{
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if(lineStart == 0)
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{
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textArea.getToolkit().beep();
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return;
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}
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caret--;
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}
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else
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{
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String noWordSep = (String)textArea.getDocument().getProperty("noWordSep");
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caret = TextUtilities.findWordStart(lineText,caret,noWordSep);
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}
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try
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{
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textArea.getDocument().remove(
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caret + lineStart,
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start - (caret + lineStart));
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}
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catch(BadLocationException bl)
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{
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bl.printStackTrace();
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}
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}
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}
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public static class delete implements ActionListener
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{
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public void actionPerformed(ActionEvent evt)
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{
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JEditTextArea textArea = getTextArea(evt);
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if(!textArea.isEditable())
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{
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textArea.getToolkit().beep();
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return;
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}
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if(textArea.getSelectionStart()
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!= textArea.getSelectionEnd())
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{
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textArea.setSelectedText("");
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}
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else
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{
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int caret = textArea.getCaretPosition();
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if(caret == textArea.getDocumentLength())
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{
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textArea.getToolkit().beep();
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return;
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}
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try
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{
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textArea.getDocument().remove(caret,1);
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}
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catch(BadLocationException bl)
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{
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bl.printStackTrace();
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}
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}
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}
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}
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public static class delete_word implements ActionListener
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{
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public void actionPerformed(ActionEvent evt)
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{
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JEditTextArea textArea = getTextArea(evt);
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int start = textArea.getSelectionStart();
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if(start != textArea.getSelectionEnd())
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{
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textArea.setSelectedText("");
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}
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int line = textArea.getCaretLine();
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int lineStart = textArea.getLineStartOffset(line);
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int caret = start - lineStart;
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String lineText = textArea.getLineText(textArea
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.getCaretLine());
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if(caret == lineText.length())
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{
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if(lineStart + caret == textArea.getDocumentLength())
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{
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textArea.getToolkit().beep();
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return;
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}
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caret++;
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}
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else
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{
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String noWordSep = (String)textArea.getDocument().getProperty("noWordSep");
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caret = TextUtilities.findWordEnd(lineText,caret,noWordSep);
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}
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try
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{
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textArea.getDocument().remove(start,
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(caret + lineStart) - start);
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}
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catch(BadLocationException bl)
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{
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bl.printStackTrace();
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}
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}
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}
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public static class end implements ActionListener
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{
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private boolean select;
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public end(boolean select)
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{
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this.select = select;
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}
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public void actionPerformed(ActionEvent evt)
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{
|
|
JEditTextArea textArea = getTextArea(evt);
|
|
|
|
int caret = textArea.getCaretPosition();
|
|
|
|
int lastOfLine = textArea.getLineEndOffset(
|
|
textArea.getCaretLine()) - 1;
|
|
int lastVisibleLine = textArea.getFirstLine()
|
|
+ textArea.getVisibleLines();
|
|
if(lastVisibleLine >= textArea.getLineCount())
|
|
{
|
|
lastVisibleLine = Math.min(textArea.getLineCount() - 1,
|
|
lastVisibleLine);
|
|
}
|
|
else
|
|
lastVisibleLine -= (textArea.getElectricScroll() + 1);
|
|
|
|
int lastVisible = textArea.getLineEndOffset(lastVisibleLine) - 1;
|
|
int lastDocument = textArea.getDocumentLength();
|
|
|
|
if(caret == lastDocument)
|
|
{
|
|
textArea.getToolkit().beep();
|
|
return;
|
|
}
|
|
else if(!Boolean.TRUE.equals(textArea.getClientProperty(
|
|
SMART_HOME_END_PROPERTY)))
|
|
caret = lastOfLine;
|
|
else if(caret == lastVisible)
|
|
caret = lastDocument;
|
|
else if(caret == lastOfLine)
|
|
caret = lastVisible;
|
|
else
|
|
caret = lastOfLine;
|
|
|
|
if(select)
|
|
textArea.select(textArea.getMarkPosition(),caret);
|
|
else
|
|
textArea.setCaretPosition(caret);
|
|
}
|
|
}
|
|
|
|
public static class document_end implements ActionListener
|
|
{
|
|
private boolean select;
|
|
|
|
public document_end(boolean select)
|
|
{
|
|
this.select = select;
|
|
}
|
|
|
|
public void actionPerformed(ActionEvent evt)
|
|
{
|
|
JEditTextArea textArea = getTextArea(evt);
|
|
if(select)
|
|
textArea.select(textArea.getMarkPosition(),
|
|
textArea.getDocumentLength());
|
|
else
|
|
textArea.setCaretPosition(textArea
|
|
.getDocumentLength());
|
|
}
|
|
}
|
|
|
|
public static class home implements ActionListener
|
|
{
|
|
private boolean select;
|
|
|
|
public home(boolean select)
|
|
{
|
|
this.select = select;
|
|
}
|
|
|
|
public void actionPerformed(ActionEvent evt)
|
|
{
|
|
JEditTextArea textArea = getTextArea(evt);
|
|
|
|
int caret = textArea.getCaretPosition();
|
|
|
|
int firstLine = textArea.getFirstLine();
|
|
|
|
int firstOfLine = textArea.getLineStartOffset(
|
|
textArea.getCaretLine());
|
|
int firstVisibleLine = (firstLine == 0 ? 0 :
|
|
firstLine + textArea.getElectricScroll());
|
|
int firstVisible = textArea.getLineStartOffset(
|
|
firstVisibleLine);
|
|
|
|
if(caret == 0)
|
|
{
|
|
textArea.getToolkit().beep();
|
|
return;
|
|
}
|
|
else if(!Boolean.TRUE.equals(textArea.getClientProperty(
|
|
SMART_HOME_END_PROPERTY)))
|
|
caret = firstOfLine;
|
|
else if(caret == firstVisible)
|
|
caret = 0;
|
|
else if(caret == firstOfLine)
|
|
caret = firstVisible;
|
|
else
|
|
caret = firstOfLine;
|
|
|
|
if(select)
|
|
textArea.select(textArea.getMarkPosition(),caret);
|
|
else
|
|
textArea.setCaretPosition(caret);
|
|
}
|
|
}
|
|
|
|
public static class document_home implements ActionListener
|
|
{
|
|
private boolean select;
|
|
|
|
public document_home(boolean select)
|
|
{
|
|
this.select = select;
|
|
}
|
|
|
|
public void actionPerformed(ActionEvent evt)
|
|
{
|
|
JEditTextArea textArea = getTextArea(evt);
|
|
if(select)
|
|
textArea.select(textArea.getMarkPosition(),0);
|
|
else
|
|
textArea.setCaretPosition(0);
|
|
}
|
|
}
|
|
|
|
public static class insert_break implements ActionListener
|
|
{
|
|
public void actionPerformed(ActionEvent evt)
|
|
{
|
|
JEditTextArea textArea = getTextArea(evt);
|
|
|
|
if(!textArea.isEditable())
|
|
{
|
|
textArea.getToolkit().beep();
|
|
return;
|
|
}
|
|
|
|
textArea.setSelectedText("\n");
|
|
}
|
|
}
|
|
|
|
public static class insert_tab implements ActionListener
|
|
{
|
|
public void actionPerformed(ActionEvent evt)
|
|
{
|
|
JEditTextArea textArea = getTextArea(evt);
|
|
|
|
if(!textArea.isEditable())
|
|
{
|
|
textArea.getToolkit().beep();
|
|
return;
|
|
}
|
|
|
|
textArea.overwriteSetSelectedText("\t");
|
|
}
|
|
}
|
|
|
|
public static class next_char implements ActionListener
|
|
{
|
|
private boolean select;
|
|
|
|
public next_char(boolean select)
|
|
{
|
|
this.select = select;
|
|
}
|
|
|
|
public void actionPerformed(ActionEvent evt)
|
|
{
|
|
JEditTextArea textArea = getTextArea(evt);
|
|
int caret = textArea.getCaretPosition();
|
|
if(caret == textArea.getDocumentLength())
|
|
{
|
|
textArea.getToolkit().beep();
|
|
return;
|
|
}
|
|
|
|
if(select)
|
|
textArea.select(textArea.getMarkPosition(),
|
|
caret + 1);
|
|
else
|
|
textArea.setCaretPosition(caret + 1);
|
|
}
|
|
}
|
|
|
|
public static class next_line implements ActionListener
|
|
{
|
|
private boolean select;
|
|
|
|
public next_line(boolean select)
|
|
{
|
|
this.select = select;
|
|
}
|
|
|
|
public void actionPerformed(ActionEvent evt)
|
|
{
|
|
JEditTextArea textArea = getTextArea(evt);
|
|
int caret = textArea.getCaretPosition();
|
|
int line = textArea.getCaretLine();
|
|
|
|
if(line == textArea.getLineCount() - 1)
|
|
{
|
|
textArea.getToolkit().beep();
|
|
return;
|
|
}
|
|
|
|
int magic = textArea.getMagicCaretPosition();
|
|
if(magic == -1)
|
|
{
|
|
magic = textArea.offsetToX(line,
|
|
caret - textArea.getLineStartOffset(line));
|
|
}
|
|
|
|
caret = textArea.getLineStartOffset(line + 1)
|
|
+ textArea.xToOffset(line + 1,magic);
|
|
if(select)
|
|
textArea.select(textArea.getMarkPosition(),caret);
|
|
else
|
|
textArea.setCaretPosition(caret);
|
|
textArea.setMagicCaretPosition(magic);
|
|
}
|
|
}
|
|
|
|
public static class next_page implements ActionListener
|
|
{
|
|
private boolean select;
|
|
|
|
public next_page(boolean select)
|
|
{
|
|
this.select = select;
|
|
}
|
|
|
|
public void actionPerformed(ActionEvent evt)
|
|
{
|
|
JEditTextArea textArea = getTextArea(evt);
|
|
int lineCount = textArea.getLineCount();
|
|
int firstLine = textArea.getFirstLine();
|
|
int visibleLines = textArea.getVisibleLines();
|
|
int line = textArea.getCaretLine();
|
|
|
|
firstLine += visibleLines;
|
|
|
|
if(firstLine + visibleLines >= lineCount - 1)
|
|
firstLine = lineCount - visibleLines;
|
|
|
|
textArea.setFirstLine(firstLine);
|
|
|
|
int caret = textArea.getLineStartOffset(
|
|
Math.min(textArea.getLineCount() - 1,
|
|
line + visibleLines));
|
|
if(select)
|
|
textArea.select(textArea.getMarkPosition(),caret);
|
|
else
|
|
textArea.setCaretPosition(caret);
|
|
}
|
|
}
|
|
|
|
public static class next_word implements ActionListener
|
|
{
|
|
private boolean select;
|
|
|
|
public next_word(boolean select)
|
|
{
|
|
this.select = select;
|
|
}
|
|
|
|
public void actionPerformed(ActionEvent evt)
|
|
{
|
|
JEditTextArea textArea = getTextArea(evt);
|
|
int caret = textArea.getCaretPosition();
|
|
int line = textArea.getCaretLine();
|
|
int lineStart = textArea.getLineStartOffset(line);
|
|
caret -= lineStart;
|
|
|
|
String lineText = textArea.getLineText(textArea
|
|
.getCaretLine());
|
|
|
|
if(caret == lineText.length())
|
|
{
|
|
if(lineStart + caret == textArea.getDocumentLength())
|
|
{
|
|
textArea.getToolkit().beep();
|
|
return;
|
|
}
|
|
caret++;
|
|
}
|
|
else
|
|
{
|
|
String noWordSep = (String)textArea.getDocument().getProperty("noWordSep");
|
|
caret = TextUtilities.findWordEnd(lineText,caret,noWordSep);
|
|
}
|
|
|
|
if(select)
|
|
textArea.select(textArea.getMarkPosition(),
|
|
lineStart + caret);
|
|
else
|
|
textArea.setCaretPosition(lineStart + caret);
|
|
}
|
|
}
|
|
|
|
public static class overwrite implements ActionListener
|
|
{
|
|
public void actionPerformed(ActionEvent evt)
|
|
{
|
|
JEditTextArea textArea = getTextArea(evt);
|
|
textArea.setOverwriteEnabled(
|
|
!textArea.isOverwriteEnabled());
|
|
}
|
|
}
|
|
|
|
public static class prev_char implements ActionListener
|
|
{
|
|
private boolean select;
|
|
|
|
public prev_char(boolean select)
|
|
{
|
|
this.select = select;
|
|
}
|
|
|
|
public void actionPerformed(ActionEvent evt)
|
|
{
|
|
JEditTextArea textArea = getTextArea(evt);
|
|
int caret = textArea.getCaretPosition();
|
|
if(caret == 0)
|
|
{
|
|
textArea.getToolkit().beep();
|
|
return;
|
|
}
|
|
|
|
if(select)
|
|
textArea.select(textArea.getMarkPosition(),
|
|
caret - 1);
|
|
else
|
|
textArea.setCaretPosition(caret - 1);
|
|
}
|
|
}
|
|
|
|
public static class prev_line implements ActionListener
|
|
{
|
|
private boolean select;
|
|
|
|
public prev_line(boolean select)
|
|
{
|
|
this.select = select;
|
|
}
|
|
|
|
public void actionPerformed(ActionEvent evt)
|
|
{
|
|
JEditTextArea textArea = getTextArea(evt);
|
|
int caret = textArea.getCaretPosition();
|
|
int line = textArea.getCaretLine();
|
|
|
|
if(line == 0)
|
|
{
|
|
textArea.getToolkit().beep();
|
|
return;
|
|
}
|
|
|
|
int magic = textArea.getMagicCaretPosition();
|
|
if(magic == -1)
|
|
{
|
|
magic = textArea.offsetToX(line,
|
|
caret - textArea.getLineStartOffset(line));
|
|
}
|
|
|
|
caret = textArea.getLineStartOffset(line - 1)
|
|
+ textArea.xToOffset(line - 1,magic);
|
|
if(select)
|
|
textArea.select(textArea.getMarkPosition(),caret);
|
|
else
|
|
textArea.setCaretPosition(caret);
|
|
textArea.setMagicCaretPosition(magic);
|
|
}
|
|
}
|
|
|
|
public static class prev_page implements ActionListener
|
|
{
|
|
private boolean select;
|
|
|
|
public prev_page(boolean select)
|
|
{
|
|
this.select = select;
|
|
}
|
|
|
|
public void actionPerformed(ActionEvent evt)
|
|
{
|
|
JEditTextArea textArea = getTextArea(evt);
|
|
int firstLine = textArea.getFirstLine();
|
|
int visibleLines = textArea.getVisibleLines();
|
|
int line = textArea.getCaretLine();
|
|
|
|
if(firstLine < visibleLines)
|
|
firstLine = visibleLines;
|
|
|
|
textArea.setFirstLine(firstLine - visibleLines);
|
|
|
|
int caret = textArea.getLineStartOffset(
|
|
Math.max(0,line - visibleLines));
|
|
if(select)
|
|
textArea.select(textArea.getMarkPosition(),caret);
|
|
else
|
|
textArea.setCaretPosition(caret);
|
|
}
|
|
}
|
|
|
|
public static class prev_word implements ActionListener
|
|
{
|
|
private boolean select;
|
|
|
|
public prev_word(boolean select)
|
|
{
|
|
this.select = select;
|
|
}
|
|
|
|
public void actionPerformed(ActionEvent evt)
|
|
{
|
|
JEditTextArea textArea = getTextArea(evt);
|
|
int caret = textArea.getCaretPosition();
|
|
int line = textArea.getCaretLine();
|
|
int lineStart = textArea.getLineStartOffset(line);
|
|
caret -= lineStart;
|
|
|
|
String lineText = textArea.getLineText(textArea
|
|
.getCaretLine());
|
|
|
|
if(caret == 0)
|
|
{
|
|
if(lineStart == 0)
|
|
{
|
|
textArea.getToolkit().beep();
|
|
return;
|
|
}
|
|
caret--;
|
|
}
|
|
else
|
|
{
|
|
String noWordSep = (String)textArea.getDocument().getProperty("noWordSep");
|
|
caret = TextUtilities.findWordStart(lineText,caret,noWordSep);
|
|
}
|
|
|
|
if(select)
|
|
textArea.select(textArea.getMarkPosition(),
|
|
lineStart + caret);
|
|
else
|
|
textArea.setCaretPosition(lineStart + caret);
|
|
}
|
|
}
|
|
|
|
public static class repeat implements ActionListener,
|
|
InputHandler.NonRecordable
|
|
{
|
|
public void actionPerformed(ActionEvent evt)
|
|
{
|
|
JEditTextArea textArea = getTextArea(evt);
|
|
textArea.getInputHandler().setRepeatEnabled(true);
|
|
String actionCommand = evt.getActionCommand();
|
|
if(actionCommand != null)
|
|
{
|
|
textArea.getInputHandler().setRepeatCount(
|
|
Integer.parseInt(actionCommand));
|
|
}
|
|
}
|
|
}
|
|
|
|
public static class toggle_rect implements ActionListener
|
|
{
|
|
public void actionPerformed(ActionEvent evt)
|
|
{
|
|
JEditTextArea textArea = getTextArea(evt);
|
|
textArea.setSelectionRectangular(
|
|
!textArea.isSelectionRectangular());
|
|
}
|
|
}
|
|
|
|
public static class insert_char implements ActionListener,
|
|
InputHandler.NonRepeatable
|
|
{
|
|
public void actionPerformed(ActionEvent evt)
|
|
{
|
|
JEditTextArea textArea = getTextArea(evt);
|
|
String str = evt.getActionCommand();
|
|
int repeatCount = textArea.getInputHandler().getRepeatCount();
|
|
|
|
if(textArea.isEditable())
|
|
{
|
|
StringBuffer buf = new StringBuffer();
|
|
for(int i = 0; i < repeatCount; i++)
|
|
buf.append(str);
|
|
textArea.overwriteSetSelectedText(buf.toString());
|
|
}
|
|
else
|
|
{
|
|
textArea.getToolkit().beep();
|
|
}
|
|
}
|
|
}
|
|
}
|