svn-gvsig-desktop / tags / v1_1_Build_1010 / libraries / libIverUtiles / src / com / iver / utiles / console / jedit / InputHandler.java @ 12804
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package com.iver.utiles.console.jedit; |
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/*
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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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import java.awt.Component; |
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import java.awt.event.ActionEvent; |
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import java.awt.event.ActionListener; |
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import java.awt.event.KeyAdapter; |
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import java.awt.event.KeyEvent; |
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import java.util.Enumeration; |
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import java.util.EventObject; |
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import java.util.Hashtable; |
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import javax.swing.JPopupMenu; |
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import javax.swing.text.BadLocationException; |
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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 $Id$
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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 enumeration = getActions();
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while(enumeration.hasMoreElements())
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{
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String name = (String)enumeration.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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|
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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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{
|
| 517 |
bl.printStackTrace(); |
| 518 |
} |
| 519 |
} |
| 520 |
} |
| 521 |
} |
| 522 |
|
| 523 |
public static class delete_word implements ActionListener |
| 524 |
{
|
| 525 |
public void actionPerformed(ActionEvent evt) |
| 526 |
{
|
| 527 |
JEditTextArea textArea = getTextArea(evt); |
| 528 |
int start = textArea.getSelectionStart();
|
| 529 |
if(start != textArea.getSelectionEnd())
|
| 530 |
{
|
| 531 |
textArea.setSelectedText("");
|
| 532 |
} |
| 533 |
|
| 534 |
int line = textArea.getCaretLine();
|
| 535 |
int lineStart = textArea.getLineStartOffset(line);
|
| 536 |
int caret = start - lineStart;
|
| 537 |
|
| 538 |
String lineText = textArea.getLineText(textArea
|
| 539 |
.getCaretLine()); |
| 540 |
|
| 541 |
if(caret == lineText.length())
|
| 542 |
{
|
| 543 |
if(lineStart + caret == textArea.getDocumentLength())
|
| 544 |
{
|
| 545 |
textArea.getToolkit().beep(); |
| 546 |
return;
|
| 547 |
} |
| 548 |
caret++; |
| 549 |
} |
| 550 |
else
|
| 551 |
{
|
| 552 |
String noWordSep = (String)textArea.getDocument().getProperty("noWordSep"); |
| 553 |
caret = TextUtilities.findWordEnd(lineText,caret,noWordSep); |
| 554 |
} |
| 555 |
|
| 556 |
try
|
| 557 |
{
|
| 558 |
textArea.getDocument().remove(start, |
| 559 |
(caret + lineStart) - start); |
| 560 |
} |
| 561 |
catch(BadLocationException bl) |
| 562 |
{
|
| 563 |
bl.printStackTrace(); |
| 564 |
} |
| 565 |
} |
| 566 |
} |
| 567 |
|
| 568 |
public static class end implements ActionListener |
| 569 |
{
|
| 570 |
private boolean select; |
| 571 |
|
| 572 |
public end(boolean select) |
| 573 |
{
|
| 574 |
this.select = select;
|
| 575 |
} |
| 576 |
|
| 577 |
public void actionPerformed(ActionEvent evt) |
| 578 |
{
|
| 579 |
JEditTextArea textArea = getTextArea(evt); |
| 580 |
|
| 581 |
int caret = textArea.getCaretPosition();
|
| 582 |
|
| 583 |
int lastOfLine = textArea.getLineEndOffset(
|
| 584 |
textArea.getCaretLine()) - 1;
|
| 585 |
int lastVisibleLine = textArea.getFirstLine()
|
| 586 |
+ textArea.getVisibleLines(); |
| 587 |
if(lastVisibleLine >= textArea.getLineCount())
|
| 588 |
{
|
| 589 |
lastVisibleLine = Math.min(textArea.getLineCount() - 1, |
| 590 |
lastVisibleLine); |
| 591 |
} |
| 592 |
else
|
| 593 |
lastVisibleLine -= (textArea.getElectricScroll() + 1);
|
| 594 |
|
| 595 |
int lastVisible = textArea.getLineEndOffset(lastVisibleLine) - 1; |
| 596 |
int lastDocument = textArea.getDocumentLength();
|
| 597 |
|
| 598 |
if(caret == lastDocument)
|
| 599 |
{
|
| 600 |
textArea.getToolkit().beep(); |
| 601 |
return;
|
| 602 |
} |
| 603 |
else if(!Boolean.TRUE.equals(textArea.getClientProperty( |
| 604 |
SMART_HOME_END_PROPERTY))) |
| 605 |
caret = lastOfLine; |
| 606 |
else if(caret == lastVisible) |
| 607 |
caret = lastDocument; |
| 608 |
else if(caret == lastOfLine) |
| 609 |
caret = lastVisible; |
| 610 |
else
|
| 611 |
caret = lastOfLine; |
| 612 |
|
| 613 |
if(select)
|
| 614 |
textArea.select(textArea.getMarkPosition(),caret); |
| 615 |
else
|
| 616 |
textArea.setCaretPosition(caret); |
| 617 |
} |
| 618 |
} |
| 619 |
|
| 620 |
public static class document_end implements ActionListener |
| 621 |
{
|
| 622 |
private boolean select; |
| 623 |
|
| 624 |
public document_end(boolean select) |
| 625 |
{
|
| 626 |
this.select = select;
|
| 627 |
} |
| 628 |
|
| 629 |
public void actionPerformed(ActionEvent evt) |
| 630 |
{
|
| 631 |
JEditTextArea textArea = getTextArea(evt); |
| 632 |
if(select)
|
| 633 |
textArea.select(textArea.getMarkPosition(), |
| 634 |
textArea.getDocumentLength()); |
| 635 |
else
|
| 636 |
textArea.setCaretPosition(textArea |
| 637 |
.getDocumentLength()); |
| 638 |
} |
| 639 |
} |
| 640 |
|
| 641 |
public static class home implements ActionListener |
| 642 |
{
|
| 643 |
private boolean select; |
| 644 |
|
| 645 |
public home(boolean select) |
| 646 |
{
|
| 647 |
this.select = select;
|
| 648 |
} |
| 649 |
|
| 650 |
public void actionPerformed(ActionEvent evt) |
| 651 |
{
|
| 652 |
JEditTextArea textArea = getTextArea(evt); |
| 653 |
|
| 654 |
int caret = textArea.getCaretPosition();
|
| 655 |
|
| 656 |
int firstLine = textArea.getFirstLine();
|
| 657 |
|
| 658 |
int firstOfLine = textArea.getLineStartOffset(
|
| 659 |
textArea.getCaretLine()); |
| 660 |
int firstVisibleLine = (firstLine == 0 ? 0 : |
| 661 |
firstLine + textArea.getElectricScroll()); |
| 662 |
int firstVisible = textArea.getLineStartOffset(
|
| 663 |
firstVisibleLine); |
| 664 |
|
| 665 |
if(caret == 0) |
| 666 |
{
|
| 667 |
textArea.getToolkit().beep(); |
| 668 |
return;
|
| 669 |
} |
| 670 |
else if(!Boolean.TRUE.equals(textArea.getClientProperty( |
| 671 |
SMART_HOME_END_PROPERTY))) |
| 672 |
caret = firstOfLine; |
| 673 |
else if(caret == firstVisible) |
| 674 |
caret = 0;
|
| 675 |
else if(caret == firstOfLine) |
| 676 |
caret = firstVisible; |
| 677 |
else
|
| 678 |
caret = firstOfLine; |
| 679 |
|
| 680 |
if(select)
|
| 681 |
textArea.select(textArea.getMarkPosition(),caret); |
| 682 |
else
|
| 683 |
textArea.setCaretPosition(caret); |
| 684 |
} |
| 685 |
} |
| 686 |
|
| 687 |
public static class document_home implements ActionListener |
| 688 |
{
|
| 689 |
private boolean select; |
| 690 |
|
| 691 |
public document_home(boolean select) |
| 692 |
{
|
| 693 |
this.select = select;
|
| 694 |
} |
| 695 |
|
| 696 |
public void actionPerformed(ActionEvent evt) |
| 697 |
{
|
| 698 |
JEditTextArea textArea = getTextArea(evt); |
| 699 |
if(select)
|
| 700 |
textArea.select(textArea.getMarkPosition(),0);
|
| 701 |
else
|
| 702 |
textArea.setCaretPosition(0);
|
| 703 |
} |
| 704 |
} |
| 705 |
|
| 706 |
public static class insert_break implements ActionListener |
| 707 |
{
|
| 708 |
public void actionPerformed(ActionEvent evt) |
| 709 |
{
|
| 710 |
JEditTextArea textArea = getTextArea(evt); |
| 711 |
|
| 712 |
if(!textArea.isEditable())
|
| 713 |
{
|
| 714 |
textArea.getToolkit().beep(); |
| 715 |
return;
|
| 716 |
} |
| 717 |
|
| 718 |
textArea.setSelectedText("\n");
|
| 719 |
} |
| 720 |
} |
| 721 |
|
| 722 |
public static class insert_tab implements ActionListener |
| 723 |
{
|
| 724 |
public void actionPerformed(ActionEvent evt) |
| 725 |
{
|
| 726 |
JEditTextArea textArea = getTextArea(evt); |
| 727 |
|
| 728 |
if(!textArea.isEditable())
|
| 729 |
{
|
| 730 |
textArea.getToolkit().beep(); |
| 731 |
return;
|
| 732 |
} |
| 733 |
|
| 734 |
textArea.overwriteSetSelectedText("\t");
|
| 735 |
} |
| 736 |
} |
| 737 |
|
| 738 |
public static class next_char implements ActionListener |
| 739 |
{
|
| 740 |
private boolean select; |
| 741 |
|
| 742 |
public next_char(boolean select) |
| 743 |
{
|
| 744 |
this.select = select;
|
| 745 |
} |
| 746 |
|
| 747 |
public void actionPerformed(ActionEvent evt) |
| 748 |
{
|
| 749 |
JEditTextArea textArea = getTextArea(evt); |
| 750 |
int caret = textArea.getCaretPosition();
|
| 751 |
if(caret == textArea.getDocumentLength())
|
| 752 |
{
|
| 753 |
textArea.getToolkit().beep(); |
| 754 |
return;
|
| 755 |
} |
| 756 |
|
| 757 |
if(select)
|
| 758 |
textArea.select(textArea.getMarkPosition(), |
| 759 |
caret + 1);
|
| 760 |
else
|
| 761 |
textArea.setCaretPosition(caret + 1);
|
| 762 |
} |
| 763 |
} |
| 764 |
|
| 765 |
public static class next_line implements ActionListener |
| 766 |
{
|
| 767 |
private boolean select; |
| 768 |
|
| 769 |
public next_line(boolean select) |
| 770 |
{
|
| 771 |
this.select = select;
|
| 772 |
} |
| 773 |
|
| 774 |
public void actionPerformed(ActionEvent evt) |
| 775 |
{
|
| 776 |
JEditTextArea textArea = getTextArea(evt); |
| 777 |
int caret = textArea.getCaretPosition();
|
| 778 |
int line = textArea.getCaretLine();
|
| 779 |
|
| 780 |
if(line == textArea.getLineCount() - 1) |
| 781 |
{
|
| 782 |
textArea.getToolkit().beep(); |
| 783 |
return;
|
| 784 |
} |
| 785 |
|
| 786 |
int magic = textArea.getMagicCaretPosition();
|
| 787 |
if(magic == -1) |
| 788 |
{
|
| 789 |
magic = textArea.offsetToX(line, |
| 790 |
caret - textArea.getLineStartOffset(line)); |
| 791 |
} |
| 792 |
|
| 793 |
caret = textArea.getLineStartOffset(line + 1)
|
| 794 |
+ textArea.xToOffset(line + 1,magic);
|
| 795 |
if(select)
|
| 796 |
textArea.select(textArea.getMarkPosition(),caret); |
| 797 |
else
|
| 798 |
textArea.setCaretPosition(caret); |
| 799 |
textArea.setMagicCaretPosition(magic); |
| 800 |
} |
| 801 |
} |
| 802 |
|
| 803 |
public static class next_page implements ActionListener |
| 804 |
{
|
| 805 |
private boolean select; |
| 806 |
|
| 807 |
public next_page(boolean select) |
| 808 |
{
|
| 809 |
this.select = select;
|
| 810 |
} |
| 811 |
|
| 812 |
public void actionPerformed(ActionEvent evt) |
| 813 |
{
|
| 814 |
JEditTextArea textArea = getTextArea(evt); |
| 815 |
int lineCount = textArea.getLineCount();
|
| 816 |
int firstLine = textArea.getFirstLine();
|
| 817 |
int visibleLines = textArea.getVisibleLines();
|
| 818 |
int line = textArea.getCaretLine();
|
| 819 |
|
| 820 |
firstLine += visibleLines; |
| 821 |
|
| 822 |
if(firstLine + visibleLines >= lineCount - 1) |
| 823 |
firstLine = lineCount - visibleLines; |
| 824 |
|
| 825 |
textArea.setFirstLine(firstLine); |
| 826 |
|
| 827 |
int caret = textArea.getLineStartOffset(
|
| 828 |
Math.min(textArea.getLineCount() - 1, |
| 829 |
line + visibleLines)); |
| 830 |
if(select)
|
| 831 |
textArea.select(textArea.getMarkPosition(),caret); |
| 832 |
else
|
| 833 |
textArea.setCaretPosition(caret); |
| 834 |
} |
| 835 |
} |
| 836 |
|
| 837 |
public static class next_word implements ActionListener |
| 838 |
{
|
| 839 |
private boolean select; |
| 840 |
|
| 841 |
public next_word(boolean select) |
| 842 |
{
|
| 843 |
this.select = select;
|
| 844 |
} |
| 845 |
|
| 846 |
public void actionPerformed(ActionEvent evt) |
| 847 |
{
|
| 848 |
JEditTextArea textArea = getTextArea(evt); |
| 849 |
int caret = textArea.getCaretPosition();
|
| 850 |
int line = textArea.getCaretLine();
|
| 851 |
int lineStart = textArea.getLineStartOffset(line);
|
| 852 |
caret -= lineStart; |
| 853 |
|
| 854 |
String lineText = textArea.getLineText(textArea
|
| 855 |
.getCaretLine()); |
| 856 |
|
| 857 |
if(caret == lineText.length())
|
| 858 |
{
|
| 859 |
if(lineStart + caret == textArea.getDocumentLength())
|
| 860 |
{
|
| 861 |
textArea.getToolkit().beep(); |
| 862 |
return;
|
| 863 |
} |
| 864 |
caret++; |
| 865 |
} |
| 866 |
else
|
| 867 |
{
|
| 868 |
String noWordSep = (String)textArea.getDocument().getProperty("noWordSep"); |
| 869 |
caret = TextUtilities.findWordEnd(lineText,caret,noWordSep); |
| 870 |
} |
| 871 |
|
| 872 |
if(select)
|
| 873 |
textArea.select(textArea.getMarkPosition(), |
| 874 |
lineStart + caret); |
| 875 |
else
|
| 876 |
textArea.setCaretPosition(lineStart + caret); |
| 877 |
} |
| 878 |
} |
| 879 |
|
| 880 |
public static class overwrite implements ActionListener |
| 881 |
{
|
| 882 |
public void actionPerformed(ActionEvent evt) |
| 883 |
{
|
| 884 |
JEditTextArea textArea = getTextArea(evt); |
| 885 |
textArea.setOverwriteEnabled( |
| 886 |
!textArea.isOverwriteEnabled()); |
| 887 |
} |
| 888 |
} |
| 889 |
|
| 890 |
public static class prev_char implements ActionListener |
| 891 |
{
|
| 892 |
private boolean select; |
| 893 |
|
| 894 |
public prev_char(boolean select) |
| 895 |
{
|
| 896 |
this.select = select;
|
| 897 |
} |
| 898 |
|
| 899 |
public void actionPerformed(ActionEvent evt) |
| 900 |
{
|
| 901 |
JEditTextArea textArea = getTextArea(evt); |
| 902 |
int caret = textArea.getCaretPosition();
|
| 903 |
if(caret == 0) |
| 904 |
{
|
| 905 |
textArea.getToolkit().beep(); |
| 906 |
return;
|
| 907 |
} |
| 908 |
|
| 909 |
if(select)
|
| 910 |
textArea.select(textArea.getMarkPosition(), |
| 911 |
caret - 1);
|
| 912 |
else
|
| 913 |
textArea.setCaretPosition(caret - 1);
|
| 914 |
} |
| 915 |
} |
| 916 |
|
| 917 |
public static class prev_line implements ActionListener |
| 918 |
{
|
| 919 |
private boolean select; |
| 920 |
|
| 921 |
public prev_line(boolean select) |
| 922 |
{
|
| 923 |
this.select = select;
|
| 924 |
} |
| 925 |
|
| 926 |
public void actionPerformed(ActionEvent evt) |
| 927 |
{
|
| 928 |
JEditTextArea textArea = getTextArea(evt); |
| 929 |
int caret = textArea.getCaretPosition();
|
| 930 |
int line = textArea.getCaretLine();
|
| 931 |
|
| 932 |
if(line == 0) |
| 933 |
{
|
| 934 |
textArea.getToolkit().beep(); |
| 935 |
return;
|
| 936 |
} |
| 937 |
|
| 938 |
int magic = textArea.getMagicCaretPosition();
|
| 939 |
if(magic == -1) |
| 940 |
{
|
| 941 |
magic = textArea.offsetToX(line, |
| 942 |
caret - textArea.getLineStartOffset(line)); |
| 943 |
} |
| 944 |
|
| 945 |
caret = textArea.getLineStartOffset(line - 1)
|
| 946 |
+ textArea.xToOffset(line - 1,magic);
|
| 947 |
if(select)
|
| 948 |
textArea.select(textArea.getMarkPosition(),caret); |
| 949 |
else
|
| 950 |
textArea.setCaretPosition(caret); |
| 951 |
textArea.setMagicCaretPosition(magic); |
| 952 |
} |
| 953 |
} |
| 954 |
|
| 955 |
public static class prev_page implements ActionListener |
| 956 |
{
|
| 957 |
private boolean select; |
| 958 |
|
| 959 |
public prev_page(boolean select) |
| 960 |
{
|
| 961 |
this.select = select;
|
| 962 |
} |
| 963 |
|
| 964 |
public void actionPerformed(ActionEvent evt) |
| 965 |
{
|
| 966 |
JEditTextArea textArea = getTextArea(evt); |
| 967 |
int firstLine = textArea.getFirstLine();
|
| 968 |
int visibleLines = textArea.getVisibleLines();
|
| 969 |
int line = textArea.getCaretLine();
|
| 970 |
|
| 971 |
if(firstLine < visibleLines)
|
| 972 |
firstLine = visibleLines; |
| 973 |
|
| 974 |
textArea.setFirstLine(firstLine - visibleLines); |
| 975 |
|
| 976 |
int caret = textArea.getLineStartOffset(
|
| 977 |
Math.max(0,line - visibleLines)); |
| 978 |
if(select)
|
| 979 |
textArea.select(textArea.getMarkPosition(),caret); |
| 980 |
else
|
| 981 |
textArea.setCaretPosition(caret); |
| 982 |
} |
| 983 |
} |
| 984 |
|
| 985 |
public static class prev_word implements ActionListener |
| 986 |
{
|
| 987 |
private boolean select; |
| 988 |
|
| 989 |
public prev_word(boolean select) |
| 990 |
{
|
| 991 |
this.select = select;
|
| 992 |
} |
| 993 |
|
| 994 |
public void actionPerformed(ActionEvent evt) |
| 995 |
{
|
| 996 |
JEditTextArea textArea = getTextArea(evt); |
| 997 |
int caret = textArea.getCaretPosition();
|
| 998 |
int line = textArea.getCaretLine();
|
| 999 |
int lineStart = textArea.getLineStartOffset(line);
|
| 1000 |
caret -= lineStart; |
| 1001 |
|
| 1002 |
String lineText = textArea.getLineText(textArea
|
| 1003 |
.getCaretLine()); |
| 1004 |
|
| 1005 |
if(caret == 0) |
| 1006 |
{
|
| 1007 |
if(lineStart == 0) |
| 1008 |
{
|
| 1009 |
textArea.getToolkit().beep(); |
| 1010 |
return;
|
| 1011 |
} |
| 1012 |
caret--; |
| 1013 |
} |
| 1014 |
else
|
| 1015 |
{
|
| 1016 |
String noWordSep = (String)textArea.getDocument().getProperty("noWordSep"); |
| 1017 |
caret = TextUtilities.findWordStart(lineText,caret,noWordSep); |
| 1018 |
} |
| 1019 |
|
| 1020 |
if(select)
|
| 1021 |
textArea.select(textArea.getMarkPosition(), |
| 1022 |
lineStart + caret); |
| 1023 |
else
|
| 1024 |
textArea.setCaretPosition(lineStart + caret); |
| 1025 |
} |
| 1026 |
} |
| 1027 |
|
| 1028 |
public static class repeat implements ActionListener, |
| 1029 |
InputHandler.NonRecordable |
| 1030 |
{
|
| 1031 |
public void actionPerformed(ActionEvent evt) |
| 1032 |
{
|
| 1033 |
JEditTextArea textArea = getTextArea(evt); |
| 1034 |
textArea.getInputHandler().setRepeatEnabled(true);
|
| 1035 |
String actionCommand = evt.getActionCommand();
|
| 1036 |
if(actionCommand != null) |
| 1037 |
{
|
| 1038 |
textArea.getInputHandler().setRepeatCount( |
| 1039 |
Integer.parseInt(actionCommand));
|
| 1040 |
} |
| 1041 |
} |
| 1042 |
} |
| 1043 |
|
| 1044 |
public static class toggle_rect implements ActionListener |
| 1045 |
{
|
| 1046 |
public void actionPerformed(ActionEvent evt) |
| 1047 |
{
|
| 1048 |
JEditTextArea textArea = getTextArea(evt); |
| 1049 |
textArea.setSelectionRectangular( |
| 1050 |
!textArea.isSelectionRectangular()); |
| 1051 |
} |
| 1052 |
} |
| 1053 |
|
| 1054 |
public static class insert_char implements ActionListener, |
| 1055 |
InputHandler.NonRepeatable |
| 1056 |
{
|
| 1057 |
public void actionPerformed(ActionEvent evt) |
| 1058 |
{
|
| 1059 |
JEditTextArea textArea = getTextArea(evt); |
| 1060 |
String str = evt.getActionCommand();
|
| 1061 |
int repeatCount = textArea.getInputHandler().getRepeatCount();
|
| 1062 |
|
| 1063 |
if(textArea.isEditable())
|
| 1064 |
{
|
| 1065 |
StringBuffer buf = new StringBuffer(); |
| 1066 |
for(int i = 0; i < repeatCount; i++) |
| 1067 |
buf.append(str); |
| 1068 |
textArea.overwriteSetSelectedText(buf.toString()); |
| 1069 |
} |
| 1070 |
else
|
| 1071 |
{
|
| 1072 |
textArea.getToolkit().beep(); |
| 1073 |
} |
| 1074 |
} |
| 1075 |
} |
| 1076 |
} |