// **********************************************************************
//
// 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 java.awt.Component;
import javax.swing.JTree;
import javax.swing.tree.DefaultTreeCellRenderer;

import IceGrid.*;
import IceGridGUI.*;

class DbEnv extends TreeNode implements DescriptorHolder
{
    static public DbEnvDescriptor copyDescriptor(DbEnvDescriptor d)
    {
	return (DbEnvDescriptor)d.clone();
    }

    static public java.util.List copyDescriptors(java.util.List list)
    {
	java.util.List copy = new java.util.LinkedList();
	java.util.Iterator p = list.iterator();
	while(p.hasNext())
	{
	    copy.add(copyDescriptor((DbEnvDescriptor)p.next()));
	}
	return copy;
    }

    public Component getTreeCellRendererComponent(
	    JTree tree,
	    Object value,
	    boolean sel,
	    boolean expanded,
	    boolean leaf,
	    int row,
	    boolean hasFocus) 
    {
	if(_cellRenderer == null)
	{
	    _cellRenderer = new DefaultTreeCellRenderer();
	    _cellRenderer.setLeafIcon(Utils.getIcon("/icons/16x16/database.png"));
	}
	return _cellRenderer.getTreeCellRendererComponent(
	    tree, value, sel, expanded, leaf, row, hasFocus);
    }


    //
    // Actions
    //
    public boolean[] getAvailableActions()
    {
	boolean[] actions = new boolean[ACTION_COUNT];
	actions[COPY] = true;
	boolean[] parentActions = ((TreeNode)_parent).getAvailableActions();
	
	actions[PASTE] = parentActions[PASTE];
	actions[DELETE] = true;
	
	if(!_ephemeral)
	{
	    actions[SHOW_VARS] = parentActions[SHOW_VARS];
	    actions[SUBSTITUTE_VARS] = parentActions[SUBSTITUTE_VARS];
	}
	return actions;
    }

    public void copy()
    {
	getCoordinator().setClipboard(copyDescriptor(_descriptor));
	if(((TreeNode)_parent).getAvailableActions()[PASTE])
	{
	    getCoordinator().getActionsForMenu().get(PASTE).setEnabled(true);
	}
    }
    public void paste()
    {
	((TreeNode)_parent).paste();
    }

    public Editor getEditor()
    {
	if(_editor == null)
	{
	    _editor = (DbEnvEditor)getRoot().getEditor(DbEnvEditor.class, this);
	}
	_editor.show(this);
	return _editor;
    }

    protected Editor createEditor()
    {
	return new DbEnvEditor();
    }

    public Object getDescriptor()
    {
	return _descriptor;
    }

    public Object copyDescriptor()
    {
	return copyDescriptor(_descriptor);
    }

    public Object saveDescriptor()
    {
	return copyDescriptor(_descriptor);
    }

    public void restoreDescriptor(Object savedDescriptor)
    {
	DbEnvDescriptor clone = (DbEnvDescriptor)savedDescriptor;
	_descriptor.name = clone.name;
	_descriptor.dbHome = clone.dbHome;
	_descriptor.description = clone.description;
	_descriptor.properties = clone.properties;
    }

    public void destroy()
    {
	((Communicator)_parent).getDbEnvs().destroyChild(this);
    }

    public boolean isEphemeral()
    {
	return _ephemeral;
    }

    DbEnv(Communicator parent, String dbEnvName, DbEnvDescriptor descriptor, 
	  boolean ephemeral)
    {
	super(parent, dbEnvName);
	_descriptor = descriptor;
	_ephemeral = ephemeral;
    }

    static void writeDbProperties(XMLWriter writer,
				  java.util.List properties)
	throws java.io.IOException
    {
	java.util.Iterator p = properties.iterator();
	while(p.hasNext())
	{
	    PropertyDescriptor pd = (PropertyDescriptor)p.next();
	    java.util.List attributes = new java.util.LinkedList();
	    attributes.add(createAttribute("name", pd.name));
	    attributes.add(createAttribute("value", pd.value));
	    writer.writeElement("dbproperty", attributes);
	}
    }

    void write(XMLWriter writer) throws java.io.IOException
    {
	if(!_ephemeral)
	{
	    java.util.List attributes = new java.util.LinkedList();
	    attributes.add(createAttribute("name", _descriptor.name));
	    if(_descriptor.dbHome.length() > 0)
	    {
		attributes.add(createAttribute("home", _descriptor.dbHome));
	    }
			   
	    if(_descriptor.description.length() == 0 && 
	       _descriptor.properties.isEmpty())
	    {
		writer.writeElement("dbenv", attributes);
	    }
	    else
	    {
		writer.writeStartTag("dbenv", attributes);
		if(_descriptor.description.length() > 0)
		{
		    writer.writeElement("description", _descriptor.description);
		}
		writeDbProperties(writer, _descriptor.properties);
		writer.writeEndTag("dbenv");
	    }
	}
    }

    private DbEnvDescriptor _descriptor;
    private final boolean _ephemeral; 
    private DbEnvEditor _editor;

    static private DefaultTreeCellRenderer _cellRenderer;    
}