// **********************************************************************
//
// Copyright (c) 2003-2006 ZeroC, Inc. All rights reserved.
//
// This copy of Ice is licensed to you under the terms described in the
// ICE_LICENSE file included in this distribution.
//
// **********************************************************************
package IceGridGUI.Application;

import IceGrid.*;
import IceGridGUI.*;

import java.awt.event.ActionEvent;

import javax.swing.AbstractAction;
import javax.swing.Action;
import javax.swing.DefaultCellEditor;
import javax.swing.JComboBox;
import javax.swing.JTable;
import javax.swing.JTextField;
import javax.swing.KeyStroke;
import javax.swing.event.TableModelEvent;
import javax.swing.event.TableModelListener;
import javax.swing.table.DefaultTableCellRenderer;
import javax.swing.table.DefaultTableModel;
import javax.swing.table.TableCellEditor;
import javax.swing.table.TableColumn;

//
// A special field used to show/edit parameters
//

public class ParametersField extends JTable
{
    public ParametersField(Editor editor)
    {
	_editor = editor;

	_columnNames = new java.util.Vector(2);
	_columnNames.add("Name");
	_columnNames.add("Default value");

	JComboBox comboBox = new JComboBox(
	    new Object[]{_noDefault});
	comboBox.setEditable(true);
	_cellEditor = new DefaultCellEditor(comboBox);

	Action deleteRow = new AbstractAction("Delete selected row(s)")
	    {
		public void actionPerformed(ActionEvent e) 
		{
		    if(isEditing()) 
		    {
			getCellEditor().stopCellEditing();
		    }
		    
		    for(;;)
		    {
			int selectedRow = getSelectedRow();
			if(selectedRow == -1)
			{
			    break;
			}
			else
			{
			    _model.removeRow(selectedRow);
			}
		    }
		}
	    };
	getActionMap().put("delete", deleteRow);
	getInputMap().put(
	    KeyStroke.getKeyStroke("DELETE"), "delete");

    }

    public void set(java.util.List names, java.util.Map values)
    {
	//
	// Transform map into vector of vectors
	//
	java.util.Vector vector = new java.util.Vector(names.size());
	java.util.Iterator p = names.iterator();
	while(p.hasNext())
	{
	    java.util.Vector row = new java.util.Vector(2);
	    String name = (String)p.next();
	    
	    row.add(name);
	    
	    Object val = values.get(name);
	    if(val == null)
	    {
		row.add(_noDefault);
	    }
	    else
	    {
		row.add(val);
	    }
	    vector.add(row);
	}


	java.util.Vector newRow = new java.util.Vector(2);
	newRow.add("");
	newRow.add(_noDefault);
	vector.add(newRow);

	_model = new DefaultTableModel(vector, _columnNames);
	
	_model.addTableModelListener(new TableModelListener()
	    {
		public void tableChanged(TableModelEvent e)
		{
		    Object lastKey = _model.getValueAt(
			_model.getRowCount() - 1 , 0);
		    if(lastKey != null && !lastKey.equals(""))
		    {
			_model.addRow(new Object[]{"", _noDefault});
		    }
		    
		    _editor.updated();
		}
	    });
	setModel(_model);

	TableColumn valColumn = getColumnModel().getColumn(1);
	valColumn.setCellEditor(_cellEditor);

	setPreferredScrollableViewportSize(getPreferredSize());	
    }


    public java.util.Map get(java.util.List names)
    {
	assert names != null;

	java.util.Map values = new java.util.HashMap();

	if(isEditing()) 
	{
	    getCellEditor().stopCellEditing();
	}
	java.util.Vector vector = _model.getDataVector();
	
	java.util.Iterator p = vector.iterator();
	while(p.hasNext())
	{
	    java.util.Vector row = (java.util.Vector)p.next();
	    
	    //
	    // Eliminate rows with null or empty names
	    //
	    String name = (String)row.elementAt(0);
	    if(name != null)
	    {
		name = name.trim();
		
		if(!name.equals(""))
		{
		    names.add(name);
		     
		    Object val = row.elementAt(1);
		    
		    //
		    // Eliminate entries with "default" value
		    //
		    if(val != _noDefault)
		    {
			assert val != null;
			values.put(name, val);
		    }
		}
	    }
	}
	return values;
    }

    private final Object _noDefault = new Object()
	{
	    public String toString()
	    {
		return "No default";
	    }
	};

    private DefaultTableModel _model;
    private java.util.Vector _columnNames;
    private Editor _editor;
    private TableCellEditor _cellEditor;
}