Examples with Caret javax.swing.text.Caret used on opensource projects

Example 21 with Caret

use of javax.swing.text.Caret in project freeplane by freeplane.

the class CheckerListener method popupMenuWillBecomeVisible.

public void popupMenuWillBecomeVisible(final PopupMenuEvent ev) {
    if (SpellChecker.getCurrentDictionary() == null) {
        menu.setEnabled(false);
        return;
    }
    final JPopupMenu popup = (JPopupMenu) ev.getSource();
    final Component invoker = popup.getInvoker();
    if (invoker instanceof JTextComponent) {
        final JTextComponent jText = (JTextComponent) invoker;
        if (!jText.isEditable()) {
            // Suggestions only for editable text components
            menu.setEnabled(false);
            return;
        }
        final Caret caret = jText.getCaret();
        int offs = Math.min(caret.getDot(), caret.getMark());
        final Point p = jText.getMousePosition();
        if (p != null) {
            // use position from mouse click and not from editor cursor position
            offs = jText.viewToModel(p);
        }
        try {
            final Document doc = jText.getDocument();
            if (offs > 0 && (offs >= doc.getLength() || Character.isWhitespace(doc.getText(offs, 1).charAt(0)))) {
                // if the next character is a white space then use the word on the left site
                offs--;
            }
            if (offs < 0) {
                // occur if there nothing under the mouse pointer
                menu.setEnabled(false);
                return;
            }
            // get the word from current position
            final int begOffs = Utilities.getWordStart(jText, offs);
            final int endOffs = Utilities.getWordEnd(jText, offs);
            final String word = jText.getText(begOffs, endOffs - begOffs);
            // find the first invalid word from current position
            final Tokenizer tokenizer = new Tokenizer(jText, dictionary, locale, offs, options);
            String invalidWord;
            do {
                invalidWord = tokenizer.nextInvalidWord();
            } while (tokenizer.getWordOffset() < begOffs);
            menu.removeAll();
            if (!word.equals(invalidWord)) {
                // the current word is not invalid
                menu.setEnabled(false);
                return;
            }
            if (dictionary == null) {
                // without dictionary it is disabled
                menu.setEnabled(false);
                return;
            }
            final List<Suggestion> list = dictionary.searchSuggestions(word);
            // Disable then menu item if there are no suggestions
            menu.setEnabled(list.size() > 0);
            final boolean needCapitalization = tokenizer.isFirstWordInSentence() && Utils.isFirstCapitalized(word);
            for (int i = 0; i < list.size() && i < options.getSuggestionsLimitMenu(); i++) {
                final Suggestion sugestion = list.get(i);
                String sugestionWord = sugestion.getWord();
                if (needCapitalization) {
                    sugestionWord = Utils.getCapitalized(sugestionWord);
                }
                final JMenuItem item = new JMenuItem(sugestionWord);
                menu.add(item);
                final String newWord = sugestionWord;
                item.addActionListener(new ActionListener() {

                    public void actionPerformed(final ActionEvent e) {
                        jText.setSelectionStart(begOffs);
                        jText.setSelectionEnd(endOffs);
                        jText.replaceSelection(newWord);
                    }
                });
            }
            final UserDictionaryProvider provider = SpellChecker.getUserDictionaryProvider();
            if (provider == null) {
                return;
            }
            final JMenuItem addToDic = new JMenuItem(Utils.getResource("addToDictionary"));
            addToDic.addActionListener(new ActionListener() {

                public void actionPerformed(final ActionEvent e) {
                    final UserDictionaryProvider provider = SpellChecker.getUserDictionaryProvider();
                    if (provider != null) {
                        provider.addWord(word);
                    }
                    dictionary.add(word);
                    dictionary.trimToSize();
                    AutoSpellChecker.refresh(jText);
                }
            });
            if (list.size() > 0) {
                if (menu instanceof JMenu) {
                    ((JMenu) menu).addSeparator();
                } else if (menu instanceof JPopupMenu) {
                    ((JPopupMenu) menu).addSeparator();
                }
            }
            menu.add(addToDic);
            menu.setEnabled(true);
        } catch (final BadLocationException ex) {
            ex.printStackTrace();
        }
    }
}