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/*
* SIP Communicator, the OpenSource Java VoIP and Instant Messaging client.
*
* Distributable under LGPL license.
* See terms of license at gnu.org.
*/
package net.java.sip.communicator.plugin.spellcheck;
import java.awt.event.*;
import java.util.*;
import javax.swing.*;
import javax.swing.event.*;
import javax.swing.text.*;
import net.java.sip.communicator.service.gui.Chat;
import net.java.sip.communicator.service.gui.event.ChatMenuListener;
import net.java.sip.communicator.util.Logger;
import org.dts.spell.dictionary.*;
/**
* Wrapper for handling the multiple listeners associated with chats for the
* spell checker.
*
* @author Damian Johnson
*/
class ChatAttachments
{
private static final Logger logger
= Logger.getLogger(ChatAttachments.class);
private static final ImageIcon ADD_WORD_ICON
= Resources.getImage(Resources.ADD_WORD_ICON);
private final Chat chat;
private final DocUnderliner docListener; //The red-squibble drawing code
private final CaretListener caretListener;
private final ChatMenuListener menuListener;
private boolean isEnabled = true;
private SpellDictionary dict;
private boolean isAttached = false;
ChatAttachments(Chat chat, SpellDictionary dict)
{
this.chat = chat;
this.dict = dict;
this.docListener = new DocUnderliner(chat.getHighlighter())
{
boolean getFormatting(String word)
{
try
{
return !ChatAttachments.this.dict.isCorrect(word);
}
catch (NullPointerException exc)
{
// thrown by spell checker API if problem occurs
logger.error(
"Spell checker dictionary failed to be accessed",
exc);
return false;
}
}
int getCaretPosition()
{
return ChatAttachments.this.chat.getCaretPosition();
}
void promptRepaint()
{
ChatAttachments.this.chat.promptRepaint();
}
};
this.caretListener = this.docListener.getEndChecker();
this.menuListener = new ChatMenuListener()
{
public List <JMenuItem> getMenuElements(Chat chat, MouseEvent event) //Overridden Here
{
if (isEnabled && event.getSource() instanceof JTextComponent)
{
JTextComponent comp = (JTextComponent) event.getSource();
int index = comp.viewToModel(event.getPoint());
if (index != -1 && comp.getText().length() != 0)
{
return getCorrections(Word.getWord(comp.getText(),
index, false));
}
}
return new ArrayList <JMenuItem>();
}
};
}
/**
* Attaches spell checker capabilities the associated chat.
*/
synchronized void attachListeners()
{
if (!this.isAttached)
{
this.chat.addChatEditorDocumentListener(this.docListener);
this.chat.addChatEditorCaretListener(this.caretListener);
this.chat.addChatEditorMenuListener(this.menuListener);
}
}
/**
* Removes spell checker listeners from the associated chat.
*/
synchronized void detachListeners()
{
if (this.isAttached)
{
this.chat.removeChatEditorDocumentListener(this.docListener);
this.chat.removeChatEditorCaretListener(this.caretListener);
this.chat.removeChatEditorMenuListener(this.menuListener);
}
}
boolean isEnabled()
{
return this.isEnabled;
}
void setEnabled(boolean enable)
{
synchronized (this.dict)
{
this.isEnabled = enable;
this.docListener.setEnabled(enable, this.chat.getMessage());
}
}
void setDictionary(SpellDictionary dict)
{
synchronized (this.dict)
{
this.dict = dict;
this.docListener.reset(this.chat.getMessage());
}
}
// provides popup menu entries (mostly separated for readability)
private ArrayList <JMenuItem> getCorrections(final Word clickedWord)
{
ArrayList <JMenuItem> correctionEntries = new ArrayList <JMenuItem>();
synchronized (this.dict)
{
if (!this.dict.isCorrect(clickedWord.getText()))
{
List <String> corrections =
this.dict.getSuggestions(clickedWord.getText());
for (String correction : corrections)
{
JMenuItem newEntry = new JMenuItem(correction);
newEntry.addActionListener(new CorrectionListener(
clickedWord, correction));
correctionEntries.add(newEntry);
}
// entry to add word
JMenuItem addWord = new JMenuItem("Add Word", ADD_WORD_ICON);
addWord.addActionListener(new ActionListener()
{
public void actionPerformed(ActionEvent event)
{
try
{
dict.addWord(clickedWord.getText());
// clears underline
docListener.format(clickedWord);
chat.promptRepaint();
}
catch (SpellDictionaryException exc)
{
String msg =
"Unable to add word to personal dictionary";
logger.error(msg, exc);
}
}
});
correctionEntries.add(addWord);
}
}
return correctionEntries;
}
// Applies corrections from popup menu to chat
private class CorrectionListener
implements ActionListener
{
private Word clickedWord;
private String correction;
CorrectionListener(Word clickedWord, String correction)
{
this.clickedWord = clickedWord;
this.correction = correction;
}
public void actionPerformed(ActionEvent event)
{
StringBuffer newMessage = new StringBuffer(chat.getMessage());
int endIndex =
this.clickedWord.getStart()
+ this.clickedWord.getText().length();
newMessage.replace(this.clickedWord.getStart(), endIndex,
this.correction);
chat.setMessage(newMessage.toString());
}
}
}
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