// **********************************************************************
//
// Copyright (c) 2003-2007 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.JPopupMenu;
import javax.swing.JTree;
import javax.swing.tree.DefaultTreeCellRenderer;

import IceGrid.*;
import IceGridGUI.*;

class PlainService extends Communicator implements Service, Cloneable
{ 
    static public ServiceDescriptor
    copyDescriptor(ServiceDescriptor sd)
    {
        ServiceDescriptor copy = (ServiceDescriptor)sd.clone();
        copy.adapters = Adapter.copyDescriptors(copy.adapters);
        copy.dbEnvs = DbEnv.copyDescriptors(copy.dbEnvs);
        copy.propertySet = PropertySet.copyDescriptor(copy.propertySet);
        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.setOpenIcon(
                Utils.getIcon("/icons/16x16/service.png"));

            _cellRenderer.setClosedIcon(
                Utils.getIcon("/icons/16x16/service.png"));
        }

        return _cellRenderer.getTreeCellRendererComponent(
            tree, value, sel, expanded, leaf, row, hasFocus);
    }

    //
    // Actions
    //
    public boolean[] getAvailableActions()
    {
        boolean[] actions = new boolean[ACTION_COUNT];
        actions[COPY] = !_ephemeral;
        
        Object clipboard = getCoordinator().getClipboard();
        if(clipboard != null && 
           (clipboard instanceof ServiceInstanceDescriptor 
            || clipboard instanceof Adapter.AdapterCopy
            || clipboard instanceof DbEnvDescriptor))
        {
            actions[PASTE] = true;
        }

        actions[DELETE] = true;
        actions[NEW_ADAPTER] = !_ephemeral;
        actions[NEW_DBENV] = !_ephemeral;
        
        if(_parent instanceof Server && !_ephemeral)
        {
            actions[SHOW_VARS] = true;
            actions[SUBSTITUTE_VARS] = true;
        }
        
        actions[MOVE_UP] = canMove(true);
        actions[MOVE_DOWN] = canMove(false);
        return actions;
    }
    public JPopupMenu getPopupMenu()
    {
        ApplicationActions actions = getCoordinator().getActionsForPopup();
        if(_popup == null)
        {
            _popup = new JPopupMenu();
            _popup.add(actions.get(NEW_ADAPTER));
            _popup.add(actions.get(NEW_DBENV));
            _popup.addSeparator();
            _popup.add(actions.get(MOVE_UP));
            _popup.add(actions.get(MOVE_DOWN));
        }
        actions.setTarget(this);
        return _popup;
    }
    public void copy()
    {
        getCoordinator().setClipboard(ServiceInstance.copyDescriptor(_descriptor));
        getCoordinator().getActionsForMenu().get(PASTE).setEnabled(true);
    }
    
    public void moveUp()
    {
        move(true);
    }
    public void moveDown()
    {
        move(false);
    }
   
    public Object getDescriptor()
    {
        return _descriptor;
    }

    public Object saveDescriptor()
    {
        return _descriptor.clone();
    }

    public void restoreDescriptor(Object savedDescriptor)
    {
        ServiceInstanceDescriptor sid = (ServiceInstanceDescriptor)savedDescriptor;

        _descriptor.descriptor.propertySet = sid.descriptor.propertySet;
        _descriptor.descriptor.description = sid.descriptor.description;
        _descriptor.descriptor.name = sid.descriptor.name;
        _descriptor.descriptor.entry = sid.descriptor.entry;
    }

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

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

    protected Editor createEditor()
    {
        return new PlainServiceEditor();
    }
    
    Editable getEnclosingEditable()
    {
        return ((Communicator)_parent).getEnclosingEditable();
    }

    private boolean canMove(boolean up)
    {
        if(_ephemeral)
        {
            return false;
        }
        else
        {
            return ((Communicator)_parent).getServices().canMove(this, up);
        }
    }

    private void move(boolean up)
    {
        assert canMove(up);
        ((Communicator)_parent).getServices().move(this, up);
    }
    
    public Object rebuild(java.util.List editables) 
        throws UpdateFailedException
    {
        Communicator communicator = (Communicator)_parent;
        Services services = communicator.getServices();
        PlainService newService = null;

        newService = (PlainService)services.createChild(_descriptor);
        
        Object backup = null;

        try
        {
            backup = (PlainService)clone();
        }
        catch(CloneNotSupportedException e)
        {
            assert false;
        }

        reset(newService);
        getRoot().getTreeModel().nodeChanged(this);
        return backup;
    }

    public void restore(Object backupObj)
    {
        reset((PlainService)backupObj);
        getRoot().getTreeModel().nodeChanged(this);
    }

    private void reset(PlainService from)
    {
        _id = from._id;
        assert _parent == from._parent;

        _adapters = from._adapters;
        _dbEnvs = from._dbEnvs;
        _services = from._services;
        _childListArray = from._childListArray;
        
        _descriptor = from._descriptor;
        _resolver = from._resolver;
    }

    PlainService(Communicator parent,
                 String name,
                 ServiceInstanceDescriptor descriptor,
                 Utils.Resolver resolver)
        throws UpdateFailedException
    {
        super(parent, name);
        _descriptor = descriptor;
        _ephemeral = false;
        _resolver = resolver;

        _adapters.init(_descriptor.descriptor.adapters);
        _dbEnvs.init(_descriptor.descriptor.dbEnvs);
    }

    //
    // New temporary object
    //
    PlainService(Communicator parent, ServiceInstanceDescriptor descriptor)
    {
        super(parent, descriptor.descriptor.name);
        _descriptor = descriptor;
        _ephemeral = true;
    }

    static java.util.List createAttributes(ServiceDescriptor descriptor)
    {
        java.util.List attributes = new java.util.LinkedList();
        attributes.add(createAttribute("name", descriptor.name));
        attributes.add(createAttribute("entry", descriptor.entry));
        return attributes;
    }

    void write(XMLWriter writer) throws java.io.IOException
    {
        if(!_ephemeral)
        {
            writer.writeStartTag("service", createAttributes(_descriptor.descriptor));
            
            if(_descriptor.descriptor.description.length() > 0)
            {
                writer.writeElement("description", _descriptor.descriptor.description);
            }
            
            writePropertySet(writer,  _descriptor.descriptor.propertySet,
                             _descriptor.descriptor.adapters, _descriptor.descriptor.logs);
            writeLogs(writer, _descriptor.descriptor.logs, _descriptor.descriptor.propertySet.properties);

            _adapters.write(writer, _descriptor.descriptor.propertySet.properties);
            _dbEnvs.write(writer);
            writer.writeEndTag("service");
        }
    }
    
    CommunicatorDescriptor getCommunicatorDescriptor()
    {
        return _descriptor.descriptor;
    }

    Utils.Resolver getResolver()
    {
        return _resolver;
    }

    public boolean isEphemeral()
    {
        return _ephemeral;
    }

    private ServiceInstanceDescriptor _descriptor;

    private final boolean _ephemeral;

    private Utils.Resolver _resolver;
    private PlainServiceEditor _editor;

    static private DefaultTreeCellRenderer _cellRenderer;  
    static private JPopupMenu _popup;
}