/* 
 *	Jeti, a Java Jabber client, Copyright (C) 2002 E.S. de Boer  
 *
 *  This program is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation; either version 2 of the License, or
 *  (at your option) any later version.
 *
 *  This program 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 General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with this program; if not, write to the Free Software
 *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 *
 *	For questions, comments etc, 
 *	use the website at http://jeti.jabberstudio.org
 *  or mail me at jeti@jabber.org
 */


package nu.fw.jeti.plugins.xhtml;

import java.awt.Color;
import java.awt.Dimension;
import java.awt.Frame;
import java.awt.Insets;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.text.MessageFormat;
import java.util.ArrayList;
import java.util.List;

import javax.swing.Action;
import javax.swing.ImageIcon;
import javax.swing.JButton;
import javax.swing.JColorChooser;
import javax.swing.JOptionPane;
import javax.swing.JPanel;
import javax.swing.JTextPane;
import javax.swing.text.AttributeSet;
import javax.swing.text.BadLocationException;
import javax.swing.text.Element;
import javax.swing.text.MutableAttributeSet;
import javax.swing.text.SimpleAttributeSet;
import javax.swing.text.StyleConstants;
import javax.swing.text.StyledDocument;
import javax.swing.text.StyledEditorKit;

import nu.fw.jeti.jabber.Backend;
import nu.fw.jeti.jabber.elements.Extension;
import nu.fw.jeti.jabber.elements.XExtension;
import nu.fw.jeti.plugins.FormattedMessage;
import nu.fw.jeti.plugins.Plugins;
import nu.fw.jeti.plugins.Word;
import nu.fw.jeti.plugins.xhtml.fontchooser.DialogShell;
import nu.fw.jeti.plugins.xhtml.fontchooser.FontDialog;
import nu.fw.jeti.ui.ChatSplitPane;
import nu.fw.jeti.util.I18N;
import nu.fw.jeti.util.Preferences;

import nu.fw.jeti.util.ServerExpresso;
import nu.fw.jeti.plugins.filetransfer.buttonFileTransfer;
import nu.fw.jeti.plugins.callVoip.buttonCallVoip;;

/**
 * @author E.S. de Boer
 *
 * 
 */
public class Plugin implements Plugins, FormattedMessage
{
	private JButton btnFont;
	private JButton btnColor;
	private JButton btnBold;
	private JButton btnItalic;
	private JButton btnUnderline;
	private JButton btnFileTransfer;
	private JButton btnCallVoip;
	private JTextPane txtInvoer;
	private ChatSplitPane chatPane;
	private Object jidUser;
	private Object jidName;
	private boolean showXHTML = true;
	public final static String VERSION = "0.3";
	public final static String DESCRIPTION = "xhtml.Formats_messages";
	public final static String MIN_JETI_VERSION = "0.5";
	public final static String NAME = "xhtml";
	public final static String ABOUT = "by E.S. de boer, uses Fontchooser from SimplyHTML by Ulrich Hilger";
	
	public static void init(Backend backend)
	{
		backend.addExtensionHandler("http://jabber.org/protocol/xhtml-im",new XHTMLIMHandler());
		backend.addExtensionHandler("http://www.w3.org/1999/xhtml",new XHTMLHandler());
		backend.addCapability("xhtml","http://jabber.org/protocol/xhtml-im");
	}

	public void initXHTML(ChatSplitPane chatPane, final JTextPane txtInvoer, JPanel pnlControl, Object JIDUser, Object JIDName)
	{
		this.txtInvoer	= txtInvoer;
		this.chatPane	= chatPane;
		this.jidUser	= JIDUser;
		this.jidName	= JIDName;
		
		MutableAttributeSet set = new SimpleAttributeSet();
		int i = Preferences.getInteger("xhtml", "foreground", 0);
		if (i != 0)
		{
			StyleConstants.setForeground(set, new Color(i));
		}
		i = Preferences.getInteger("xhtml", "background", 0);
		if (i != 0)
		{
			StyleConstants.setBackground(set, new Color(i));
		}
		i = Preferences.getInteger("xhtml", "font-size", 0);
		if (i != 0)
		{
			StyleConstants.setFontSize(set, i);
		}
		StyleConstants.setFontFamily(set, Preferences.getString("xhtml", "font-family", "Arial"));
		StyleConstants.setBold(set,Preferences.getBoolean("xhtml","bold",false));
	    StyleConstants.setItalic(set,Preferences.getBoolean("xhtml","italic",false));
	    
		txtInvoer.setParagraphAttributes(set, false);

		// BUTTON-font
		btnFont = new JButton(new ImageIcon(getClass().getResource("font.gif")));
		btnFont.setToolTipText(I18N.gettext("xhtml.Font"));
		btnFont.setMargin(new Insets(0, 0, 0, 0));
		btnFont.setPreferredSize(new Dimension(23, 23));
		btnFont.addActionListener(new java.awt.event.ActionListener()
		{
			public void actionPerformed(ActionEvent e)
			{

				AttributeSet attr = txtInvoer.getCharacterAttributes(); //new SimpleAttributeSet();
				Frame frame = JOptionPane.getFrameForComponent(txtInvoer.getTopLevelAncestor());
				FontDialog d = new FontDialog(frame , I18N.gettext("xhtml.Choose_Font"), attr);
				d.setModal(true);
				d.setVisible(true);

				if (d.getResult() == DialogShell.RESULT_OK)
				{
					attr = d.getAttributes();
					int start = txtInvoer.getSelectionStart();
					int end = txtInvoer.getSelectionEnd();
					if (end != start)
					{
						StyledDocument doc = (StyledDocument) txtInvoer.getDocument();
						doc.setCharacterAttributes(start, end - start, attr, false);
					}
					else txtInvoer.setParagraphAttributes(attr, false);
					txtInvoer.requestFocus();
				}
			}
		});
		pnlControl.add(btnFont);

		// BUTTON-color
		btnColor = new JButton(new ImageIcon(getClass().getResource("color.gif")));
		btnColor.setToolTipText(I18N.gettext("xhtml.Color"));
		btnColor.setMargin(new Insets(0, 0, 0, 0));
		btnColor.setPreferredSize(new Dimension(23, 23));
		btnColor.addActionListener(new java.awt.event.ActionListener()
		{
			public void actionPerformed(ActionEvent e)
			{
				Color color = JColorChooser.showDialog(txtInvoer.getTopLevelAncestor(), I18N.gettext("xhtml.Color"), null);
				if (color != null)
				{
					int start = txtInvoer.getSelectionStart();
					int end = txtInvoer.getSelectionEnd();
					MutableAttributeSet set = new SimpleAttributeSet();
					set.addAttribute(StyleConstants.Foreground, color);
					if (end != start)
					{
						StyledDocument doc = (StyledDocument) txtInvoer.getDocument();
						doc.setCharacterAttributes(start, end - start, set, false);
					}
					else txtInvoer.setParagraphAttributes(set, false);
					txtInvoer.requestFocus();
				}
			}
		});
		pnlControl.add(btnColor);

		ActionListener returnFocus = new ActionListener()
		{
			public void actionPerformed(ActionEvent e)
			{
                txtInvoer.requestFocus();
            }
        };

        // Click button filetransfer;	
        ActionListener Ftransfer = new ActionListener()
        {
        	
        	public void actionPerformed(ActionEvent e)
        	{
        		buttonFileTransfer sFile = new buttonFileTransfer();
        		sFile.sendFile(jidUser);
        	}
        };
        
        // Click button CallVoip;
        ActionListener callVoip = new ActionListener()
        {
        	public void actionPerformed(ActionEvent e)
        	{
        		String _return = buttonCallVoip.connExpresso(jidUser.toString(), nu.fw.jeti.applet.Jeti.USERID);        		
        		javax.swing.JOptionPane.showMessageDialog(null, I18N.gettext("callVoip.Calling") + " : " + jidName + "\n\n" +
        				I18N.gettext("callVoip.Status") + " : " + _return );
        	}
        };
        
		// BUTTON-bold
		Action boldAction = new StyledEditorKit.BoldAction();
		boldAction.putValue(Action.NAME, null);
		boldAction.putValue(Action.SHORT_DESCRIPTION, I18N.gettext("xhtml.Bold"));
		boldAction.putValue(Action.SMALL_ICON, new ImageIcon(getClass().getResource("Bold16.gif")));
		btnBold = new JButton(boldAction);
		btnBold.setMargin(new Insets(0, 0, 0, 0));
		btnBold.setPreferredSize(new Dimension(23, 23));
        btnBold.addActionListener(returnFocus);
		pnlControl.add(btnBold);

		// BUTTON-italic
		Action italicAction = new StyledEditorKit.ItalicAction();
		italicAction.putValue(Action.NAME, null);
		italicAction.putValue(Action.SHORT_DESCRIPTION, I18N.gettext("xhtml.Italic"));
		italicAction.putValue(Action.SMALL_ICON,new ImageIcon(getClass().getResource("Italic16.gif")));
		btnItalic = new JButton(italicAction);
		btnItalic.setMargin(new Insets(0, 0, 0, 0));
		btnItalic.setPreferredSize(new Dimension(23, 23));
        btnItalic.addActionListener(returnFocus);
		pnlControl.add(btnItalic);

		// BUTTON-underline
		Action underlineAction = new StyledEditorKit.UnderlineAction();
		underlineAction.putValue(Action.NAME, null);
		underlineAction.putValue(Action.SHORT_DESCRIPTION, I18N.gettext("xhtml.Underline"));
		underlineAction.putValue(Action.SMALL_ICON,new ImageIcon(getClass().getResource("Underline16.gif")));
		btnUnderline = new JButton(underlineAction);
		btnUnderline.setMargin(new Insets(0, 0, 0, 0));
		btnUnderline.setPreferredSize(new Dimension(23, 23));
        btnUnderline.addActionListener(returnFocus);
		pnlControl.add(btnUnderline);

		// BUTTON-filetransfer
		if( nu.fw.jeti.applet.Jeti.JAVAPLUGINS.indexOf("filetransfer") != -1 )
		{
			btnFileTransfer = new JButton(new ImageIcon(getClass().getResource("ftransfer16.gif")));
			btnFileTransfer.setMargin(new Insets(0,0,0,0));
			btnFileTransfer.setPreferredSize(new Dimension(23, 23));
			btnFileTransfer.setToolTipText(I18N.gettext("xhtml.Transfer_File"));
			btnFileTransfer.addActionListener(Ftransfer);
			pnlControl.add(btnFileTransfer);
		}
		
		// BUTTON-callVoip
		if( nu.fw.jeti.applet.Jeti.JAVAPLUGINS.indexOf("callVoip") != -1 )
		{
			btnCallVoip = new JButton();
			btnCallVoip = buttonCallVoip.button(btnCallVoip);
			btnCallVoip.addActionListener(callVoip);
			pnlControl.add(btnCallVoip);
		}
	}

	public List getWordList(Extension extension)
	{
		if(extension instanceof XHTML)
		{	
			return ((XHTML) extension).getWordList();
		}
		return null;
	}
		
	public void useXHTML(boolean useXHTMl,String name)
	{
		//look if other one sends xhtml
		//javax.swing.JOptionPane.showMessageDialog(null, "Directory " + dir + " could not be created, Jeti will close");
		if (useXHTMl != showXHTML && !useXHTMl)
		{
			//chatPane.appendSystemMessage(MessageFormat.format(
			//		I18N.gettext("xhtml.{0}_does_not_support_formatted_messages")
			//		,new Object[]{name}));
		}
		showXHTML=useXHTMl;
	}
	
	public XExtension getXHTMLExtension(List wordList)
	{
		return new XHTML(wordList);
	}
	
	public boolean sendXML()
	{
		return showXHTML;
	}
	
	public List makeWordListFromDocument()
	{
		Element[] element = txtInvoer.getDocument().getRootElements();
		List wordList = new ArrayList();
		parseElement(element[0], wordList, new SimpleAttributeSet());
		return wordList;
	}
	
	private void addToWordList(String text,SimpleAttributeSet currentAttributes, List wordList)
	{
		if(text.equals(""))return;
		StringBuffer temp = new StringBuffer();
		for(int i = 0;i<text.length();i++)
		{
			//split text up in words
			char c = text.charAt(i);
			switch (c)
			{
				case ' ':	addWordFromTemp(temp, wordList, currentAttributes); wordList.add(new Word(" ", (SimpleAttributeSet)currentAttributes.clone())); temp = new StringBuffer(); break;
				case '\n':	addWordFromTemp(temp, wordList, currentAttributes); temp = new StringBuffer(); break;
				case '\t':	addWordFromTemp(temp, wordList, currentAttributes); wordList.add(new Word("\t", (SimpleAttributeSet)currentAttributes.clone()));temp = new StringBuffer();break;
				default:	temp.append(c);
			}
		}
		addWordFromTemp(temp, wordList, currentAttributes);
	}
	
	private void addWordFromTemp(StringBuffer temp, List wordList, SimpleAttributeSet currentAttributes)
	{
		if(temp.length()>0)wordList.add(new Word(temp,(SimpleAttributeSet)currentAttributes.clone()));
	}
	
	
	/**
	 * Method parseElement.
	 * parses a styled document to a wordList 
	 * @param elem element to parse
	 * 
	 */
	private void parseElement(Element elem, List wordList,SimpleAttributeSet attr)
	{
		AttributeSet set = elem.getAttributes();
		attr.addAttributes(set);
		if (elem.getName().equals("paragraph"))
		{
			if (elem.getStartOffset() != 0)
			{//only <br/>?
				wordList.add(new Word("\n",(SimpleAttributeSet)attr.clone()));
			}
		}
		if (elem.getName().equals("content"))
		{
			if (elem.getElementCount() > 0)
			{
				for (int i = 0; i < elem.getElementCount(); i++)
				{
					parseElement(elem.getElement(i),wordList, new SimpleAttributeSet(attr));
				}
			}
			else
			{
				try
				{
					int offset = elem.getEndOffset() - elem.getStartOffset();
					String text = elem.getDocument().getText(elem.getStartOffset(), offset);
					//remove linebreaks
					addToWordList(text, attr, wordList);
				}
				catch (BadLocationException ble)
				{
					ble.printStackTrace();
				}
			}
		}
		else if (elem.getElementCount() > 0)
		{
			for (int i = 0; i < elem.getElementCount(); i++)
			{
				parseElement(elem.getElement(i), wordList,new SimpleAttributeSet(attr));
			}
		}
	}

	public void unload(){}
	
	public static void unload(Backend backend)
	{
		backend.removeExtensionHandler("http://jabber.org/protocol/xhtml-im");
		backend.removeExtensionHandler("http://www.w3.org/1999/xhtml");
		backend.removeCapability("xhtml","http://jabber.org/protocol/xhtml-im");
	}
}

/*
 * Overrides for emacs
 * Local variables:
 * tab-width: 4
 * End:
 */