import javax.swing.text.JTextComponent; //導(dǎo)入方法依賴的package包/類

public void actionPerformed(final ActionEvent evt, final JTextComponent target) {

if (target != null) {

if (!target.isEditable() || !target.isEnabled()) {

target.getToolkit().beep();

return;

}

EditorUI editorUI = Utilities.getEditorUI(target);

Caret caret = target.getCaret();

final BaseDocument doc = Utilities.getDocument(target);

if(caret instanceof EditorCaret) {

EditorCaret editorCaret = (EditorCaret) caret;

if(editorCaret.getCarets().size() > 1) {

target.getToolkit().beep();

return;

}

}

// Possibly remove selection

if (Utilities.isSelectionShowing(caret)) {

target.replaceSelection(null);

}

final int caretOffset = caret.getDot();

final String s = editorUI.getWordMatch().getMatchWord(caretOffset, matchNext);

final String prevWord = editorUI.getWordMatch().getPreviousWord();

if (s != null) {

doc.runAtomicAsUser (new Runnable () {

public void run () {

DocumentUtilities.setTypingModification(doc, true);

try {

int offset = caretOffset;

boolean removePrevWord = (prevWord != null && prevWord.length() > 0);

if (removePrevWord) {

offset -= prevWord.length();

}

// Create position due to possible text replication (e.g. for variable renaming)

Position pos = doc.createPosition(offset);

doc.remove(offset, prevWord.length());

doc.insertString(pos.getOffset(), s, null);

} catch (BadLocationException e) {

target.getToolkit().beep();

} finally {

DocumentUtilities.setTypingModification(doc, false);

}

}

});

}

}

}

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