// **********************************************************************
//
// 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.event.ActionEvent;

import javax.swing.AbstractAction;
import javax.swing.Action;
import javax.swing.JButton;
import javax.swing.JComboBox;
import javax.swing.JScrollPane;
import javax.swing.JTextField;

import javax.swing.event.ListDataEvent;
import javax.swing.event.ListDataListener;

import com.jgoodies.forms.builder.DefaultFormBuilder;
import com.jgoodies.forms.layout.CellConstraints;

import IceGrid.*;
import IceGridGUI.*;

class ServiceInstanceEditor extends CommunicatorChildEditor
{
    ServiceInstanceEditor()
    {
	//
	// Template
	//
	Action gotoTemplate = new AbstractAction(
	    "", Utils.getIcon("/icons/16x16/goto.png"))
	    {
		public void actionPerformed(ActionEvent e) 
		{
		    TreeNode t = (TreeNode)_template.getSelectedItem();
		    if(t != null)
		    {
			t.getRoot().setSelectedNode(t);
		    }
		}
	    };
	gotoTemplate.putValue(Action.SHORT_DESCRIPTION, 
			      "Goto this service template");
	_templateButton = new JButton(gotoTemplate);

	_parameters = new ParameterValuesField(this);

	_propertySets.getDocument().addDocumentListener(_updateListener);
	_propertySets.setToolTipText("Property Set References");
	_properties = new PropertiesField(this);
    }

    ServiceInstanceDescriptor getDescriptor()
    {
	return (ServiceInstanceDescriptor)_target.getDescriptor();
    }

    //
    // From Editor:
    //
    Utils.Resolver getDetailResolver()
    {
	ServiceInstance service = (ServiceInstance)_target;
	if(service.getCoordinator().substitute())
	{
	    return service.getResolver();
	}
	else
	{
	    return null;
	}
    }

    void writeDescriptor()
    {
	ServiceInstanceDescriptor descriptor = getDescriptor();
	descriptor.template = ((ServiceTemplate)_template.getSelectedItem()).getId();
	descriptor.parameterValues = _parameters.getValues();

	descriptor.propertySet.references = 
	    (String[])_propertySets.getList().toArray(new String[0]);
	descriptor.propertySet.properties = _properties.getProperties();
    }	    
    
    boolean isSimpleUpdate()
    {
	ServiceInstanceDescriptor descriptor = getDescriptor();
	ServiceTemplate t = (ServiceTemplate)_template.getSelectedItem();
	
	return descriptor.template.equals(t.getId())
	    && descriptor.parameterValues.equals(_parameters.getValues());
    }

    Communicator.ChildList getChildList()
    {
	return ((Communicator)_target.getParent()).getServices();
    }

    protected void appendProperties(DefaultFormBuilder builder)
    { 
	builder.append("Template", _template);
	builder.append(_templateButton);
	builder.nextLine();
	
	builder.append("Parameters");
	builder.nextLine();
	builder.append("");
	builder.nextLine();
	builder.append("");

	builder.nextLine();
	builder.append("");

	builder.nextRow(-6);
	JScrollPane scrollPane = new JScrollPane(_parameters);
	CellConstraints cc = new CellConstraints();
	builder.add(scrollPane, 
		    cc.xywh(builder.getColumn(), builder.getRow(), 3, 7));
	builder.nextRow(6);
	builder.nextLine();
	
	builder.append("Property Sets");
	builder.append(_propertySets, 3);
	builder.nextLine();

	builder.append("Properties");
	builder.nextLine();
	builder.append("");
	builder.nextLine();
	builder.append("");

	builder.nextLine();
	builder.append("");

	builder.nextRow(-6);
	scrollPane = new JScrollPane(_properties);
	builder.add(scrollPane, 
		    cc.xywh(builder.getColumn(), builder.getRow(), 3, 7));
	builder.nextRow(6);
	builder.nextLine();
    }

    protected void buildPropertiesPanel()
    {
	super.buildPropertiesPanel();
	_propertiesPanel.setName("Service Properties");
    }

    void show(ServiceInstance service)
    {
	detectUpdates(false);
	_target = service;
	
	//
	// If it's not a template instance, it's shown using
	// ServiceEditor.show()
	//
	assert getDescriptor().template.length() > 0;

	ServiceInstanceDescriptor descriptor = 
	    (ServiceInstanceDescriptor)service.getDescriptor();
	Coordinator coordinator = service.getCoordinator();
	boolean isEditable = service.isEphemeral() || !coordinator.substitute();

	Utils.Resolver resolver = isEditable ? null :
	    ((TreeNode)service.getParent()).getResolver();
	
	//
	// Need to make control enabled before changing it
	//
	_template.setEnabled(true);

	ServiceTemplates serviceTemplates =
	    service.getRoot().getServiceTemplates();
	_template.setModel(serviceTemplates.createComboBoxModel());

	ServiceTemplate t = (ServiceTemplate)
	    serviceTemplates.findChild(descriptor.template);
	assert t != null;
	_template.setSelectedItem(t);
	
	ListDataListener templateListener = new ListDataListener()
	    {
		public void contentsChanged(ListDataEvent e)
		{
		    updated();
		    
		    ServiceTemplate t = 
			(ServiceTemplate)_template.getModel().getSelectedItem();
		    
		    TemplateDescriptor td = (TemplateDescriptor)t.getDescriptor();
		    
		    //
		    // Replace parameters but keep existing values
		    //
		    _parameters.set(td.parameters,
				    makeParameterValues(_parameters.getValues(), td.parameters),
				    td.parameterDefaults, null);
		}

		public void intervalAdded(ListDataEvent e)
		{}
         
		public void intervalRemoved(ListDataEvent e)
		{}
	    };

	_template.getModel().addListDataListener(templateListener);
	_template.setEnabled(isEditable);
	
	TemplateDescriptor td = (TemplateDescriptor)t.getDescriptor();
	_parameters.set(td.parameters, descriptor.parameterValues, 
			td.parameterDefaults, resolver);
	
	_propertySets.setList(java.util.Arrays.asList(descriptor.propertySet.references),
			      getDetailResolver());
	_propertySets.setEditable(isEditable);

	_properties.setProperties(descriptor.propertySet.properties, null, null, 
				  getDetailResolver(), isEditable);

	_applyButton.setEnabled(service.isEphemeral());
	_discardButton.setEnabled(service.isEphemeral());	  
	detectUpdates(true);
    }

    private JComboBox _template = new JComboBox();
    private JButton _templateButton;
    private ParameterValuesField _parameters;
    private ListTextField _propertySets = new ListTextField(20);
    private PropertiesField _properties;
}