Jazzy example source code file (SpellCheckedDocument.java)

This example Jazzy source code file (SpellCheckedDocument.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" ^TM.

Java - Jazzy tags/keywords

attributeset, awt, badlocationexception, badlocationexception, defaultstyleddocument, error_style, spellcheckeddocument, spelldictionary, string, string, stringtokenizer, stringtokenizer, style, style, text, util

The Jazzy SpellCheckedDocument.java source code

/*
Jazzy - a Java library for Spell Checking
Copyright (C) 2001 Mindaugas Idzelis
Full text of license can be found in LICENSE.txt

This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.

This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
Lesser General Public License for more details.

You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
*/
package com.swabunga.spell.swing;

import com.swabunga.spell.engine.SpellDictionary;

import javax.swing.text.*;
import java.awt.*;
import java.util.StringTokenizer;

/**
 * @author Stig Tanggaard
 *
 *
 */
public class SpellCheckedDocument extends DefaultStyledDocument {

  public static final String ERROR_STYLE = "errorstyle";
  Style errorstyle;
  Style normalstyle;
  static AttributeSet normal;
  int checkoffset, checkend;
  String checkingline;
  static SpellDictionary dictionary;

  boolean checkspelling = false;

  public SpellCheckedDocument(SpellDictionary dictionary) {
    super();
    SpellCheckedDocument.dictionary = dictionary;

//    StyleContext context = StyleContext.getDefaultStyleContext();
    Style def = StyleContext.getDefaultStyleContext().getStyle(StyleContext.DEFAULT_STYLE);
    normal = addStyle("normal", def);
    errorstyle = addStyle(ERROR_STYLE, def);
    StyleConstants.setForeground(errorstyle, Color.red);
    StyleConstants.setUnderline(errorstyle, true);
  }

  public void checkSpelling() {
    if (dictionary != null) {
      int start = 0;
      int end = getLength();
      try {
        String text = getText(start, end - start);
        //System.out.println(text);
        checkoffset = text.indexOf(" ");
        if (checkoffset == -1) return;
        checkend = text.lastIndexOf(" ");
        if (checkend == -1) return;
        if (checkoffset == checkend) return;
        checkoffset += 1;
        checkingline = text.substring(checkoffset, checkend);
        if (checkingline == null) return;
        //System.out.println(":" + checkingline + ":");
        checkoffset += start;
        checkend += start;
        setCharacterAttributes(checkoffset, checkend - checkoffset, normal, true);
        //System.out.println("" + checkoffset + ":" + (checkend - checkoffset));
        StringTokenizer token = new StringTokenizer(checkingline, " ");
        //errors = new Vector();
        while (token.hasMoreTokens()) {
          String tok = token.nextToken();
          tok = clean(tok);
          if (tok.indexOf("\n") != -1) {
            String t1 = tok.substring(0, tok.indexOf("\n"));
            String t2 = tok.substring(tok.indexOf("\n") + 1);
            if (!dictionary.isCorrect(t1)) {
              setCharacterAttributes(checkingline.indexOf(t1) + checkoffset, t1.length(), errorstyle, false);
            }
            if (!dictionary.isCorrect(t2)) {
              setCharacterAttributes(checkingline.indexOf(t2) + checkoffset, t2.length(), errorstyle, false);
            }
          } else if (tok.indexOf("/") != -1) {
            String t1 = tok.substring(0, tok.indexOf("/"));
            String t2 = tok.substring(tok.indexOf("/") + 1);
            if (!dictionary.isCorrect(t1)) {
              setCharacterAttributes(checkingline.indexOf(t1) + checkoffset, t1.length(), errorstyle, false);
            }
            if (!dictionary.isCorrect(t2)) {
              setCharacterAttributes(checkingline.indexOf(t2) + checkoffset, t2.length(), errorstyle, false);
            }
          } else if (!dictionary.isCorrect(tok)) {
            //System.out.println(tok + tok.length());
            setCharacterAttributes(checkingline.indexOf(tok) + checkoffset, tok.length(), errorstyle, false);
          }
        }
        //setAttributes(a, errorstyle);
      } catch (BadLocationException f) {
      }
    }
  }

  public void setCheckSpelling(boolean check) {
    if (!checkspelling) {
      checkSpelling();
    }
    checkspelling = check;
  }

  public void insertString(int offset, String string, AttributeSet a) throws BadLocationException {
    //if(normal == null) normal = a;
    super.insertString(offset, string, normal);
    if (!checkspelling) return;
    if (dictionary != null) {
      int start = offset - 30;
      int end = offset + 30;
      if (start < 0) start = 0;
      if (end > getLength()) end = getLength();
      try {
        String text = getText(start, end - start);
        //System.out.println(text);
        checkoffset = text.indexOf(" ");
        if (checkoffset == -1) return;
        checkend = text.lastIndexOf(" ");
        if (checkend == -1) return;
        if (checkoffset == checkend) return;
        checkoffset += 1;
        checkingline = text.substring(checkoffset, checkend);
        if (checkingline == null) return;
        //System.out.println(":" + checkingline + ":");
        checkoffset += start;
        checkend += start;
        setCharacterAttributes(checkoffset, checkend - checkoffset, normal, true);
        //System.out.println("" + checkoffset + ":" + (checkend - checkoffset));
        StringTokenizer token = new StringTokenizer(checkingline, " ");
        //errors = new Vector();
        while (token.hasMoreTokens()) {
          String tok = token.nextToken();
          tok = clean(tok);
          if (tok.indexOf("\n") != -1) {
            String t1 = tok.substring(0, tok.indexOf("\n"));
            String t2 = tok.substring(tok.indexOf("\n") + 1);
            if (!dictionary.isCorrect(t1)) {
              setCharacterAttributes(checkingline.indexOf(t1) + checkoffset, t1.length(), errorstyle, false);
            }
            if (!dictionary.isCorrect(t2)) {
              setCharacterAttributes(checkingline.indexOf(t2) + checkoffset, t2.length(), errorstyle, false);
            }

          } else if (tok.indexOf("/") != -1) {
            String t1 = tok.substring(0, tok.indexOf("/"));
            String t2 = tok.substring(tok.indexOf("/") + 1);
            if (!dictionary.isCorrect(t1)) {
              setCharacterAttributes(checkingline.indexOf(t1) + checkoffset, t1.length(), errorstyle, false);
            }
            if (!dictionary.isCorrect(t2)) {
              setCharacterAttributes(checkingline.indexOf(t2) + checkoffset, t2.length(), errorstyle, false);
            }

          } else if (!dictionary.isCorrect(tok)) {
            System.out.println(tok + tok.length());
            setCharacterAttributes(checkingline.indexOf(tok) + checkoffset, tok.length(), errorstyle, false);
          }

        }

        //setAttributes(a, errorstyle);
      } catch (BadLocationException f) {
      }
    }
  }


  public void remove(int offset, int len) throws BadLocationException {
    super.remove(offset, len);
    if (!checkspelling) return;
    if (dictionary != null) {
      int start = offset - 30;
      int end = offset + 30;
      if (start < 0) start = 0;
      if (end > getLength()) end = getLength();
      try {
        String text = getText(start, end - start);
        //System.out.println(text);
        checkoffset = text.indexOf(" ");
        if (checkoffset == -1) return;
        checkend = text.lastIndexOf(" ");
        if (checkend == -1) return;
        if (checkoffset == checkend) return;
        checkoffset += 1;
        checkingline = text.substring(checkoffset, checkend);
        if (checkingline == null) return;
        //System.out.println(":" + checkingline + ":");
        checkoffset += start;
        checkend += start;
        setCharacterAttributes(checkoffset, checkend - checkoffset, normal, true);
        //System.out.println("" + checkoffset + ":" + (checkend - checkoffset));
        StringTokenizer token = new StringTokenizer(checkingline, " ");
        //errors = new Vector();

        while (token.hasMoreTokens()) {
          String tok = token.nextToken();
          tok = clean(tok);
          if (tok.indexOf("\n") != -1) {
            String t1 = tok.substring(0, tok.indexOf("\n"));
            String t2 = tok.substring(tok.indexOf("\n") + 1);
            if (!dictionary.isCorrect(t1)) {
              setCharacterAttributes(checkingline.indexOf(t1) + checkoffset, t1.length(), errorstyle, false);
            }
            if (!dictionary.isCorrect(t2)) {
              setCharacterAttributes(checkingline.indexOf(t2) + checkoffset, t2.length(), errorstyle, false);
            }
          } else if (!dictionary.isCorrect(tok)) {
            //System.out.println(tok + tok.length());
            setCharacterAttributes(checkingline.indexOf(tok) + checkoffset, tok.length(), errorstyle, false);
          }
        }
        //setAttributes(a, errorstyle);
      } catch (BadLocationException f) {
      }
    }
  }


  public String clean(String word) {

    char[] chars = word.toCharArray();
    //String wordd = "";

    //if(chars.length > 0)
    int index = chars.length - 1;
    while (!Character.isLetterOrDigit(chars[index]) && index > 0) {
      //System.out.println("isocontrol " + word);
      index--;
    }
    word = word.substring(0, index + 1);
    if (word.endsWith(",") || word.endsWith(";") || word.endsWith(".") || word.endsWith("\n") || word.endsWith("?") || word.endsWith("!")) {
      return word.substring(0, word.length() - 1);
    }
    index = 0;
    chars = word.toCharArray();
    while (!Character.isLetterOrDigit(chars[index]) && index < chars.length - 1) {
      //System.out.println("isocontrol " + word);
      index++;
    }
    word = word.substring(index);

    return word;
  }


  public void checkSplittedWords(String divider, String line) {
  }

}