#region Disclaimer / License
// Copyright (C) 2009, Kenneth Skovhede
// http://www.hexad.dk, opensource@hexad.dk
// 
// This library is free software; you can redistribute it and/or
// modify it under the terms of the GNU Lesser General Public
// License as published by the Free Software Foundation; either
// version 2.1 of the License, or (at your option) any later version.
// 
// This library 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
// Lesser General Public License for more details.
// 
// You should have received a copy of the GNU Lesser General Public
// License along with this library; if not, write to the Free Software
// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
// 
#endregion
using System;
using System.Collections;
using System.ComponentModel;
using System.Drawing;
using System.Data;
using System.Windows.Forms;
using OSGeo.MapGuide.MaestroAPI;

namespace OSGeo.MapGuide.Maestro.ResourceEditors.FeatureSourceExtensions
{
	/// <summary>
	/// Summary description for Calulated.
	/// </summary>
	public class Calculated : System.Windows.Forms.UserControl
	{
		private System.Windows.Forms.TextBox PropertyName;
		private System.Windows.Forms.Label label2;
		private System.Windows.Forms.Label label1;
		private System.Windows.Forms.TextBox PropertyDefinition;
		/// <summary> 
		/// Required designer variable.
		/// </summary>
		private System.ComponentModel.Container components = null;
		public event FeatureSourceExtension.NameChangedDelegate NameChanged;

		private EditorInterface m_editor = null;

		private CalculatedPropertyType m_property;
		private bool m_isUpdating = false;

		public Calculated()
		{
			// This call is required by the Windows.Forms Form Designer.
			InitializeComponent();
		}

		public void SetItem(CalculatedPropertyType property)
		{
			m_property = property;
			UpdateDisplay();
		}

		public void UpdateDisplay()
		{
			try
			{
				m_isUpdating = true;

				PropertyName.Text = m_property.Name;
				PropertyDefinition.Text = m_property.Expression;
			}
			finally
			{
				m_isUpdating = false;
			}
		}

		/// <summary> 
		/// Clean up any resources being used.
		/// </summary>
		protected override void Dispose( bool disposing )
		{
			if( disposing )
			{
				if(components != null)
				{
					components.Dispose();
				}
			}
			base.Dispose( disposing );
		}

		#region Component Designer generated code
		/// <summary> 
		/// Required method for Designer support - do not modify 
		/// the contents of this method with the code editor.
		/// </summary>
		private void InitializeComponent()
		{
            System.ComponentModel.ComponentResourceManager resources = new System.ComponentModel.ComponentResourceManager(typeof(Calculated));
            this.PropertyName = new System.Windows.Forms.TextBox();
            this.label2 = new System.Windows.Forms.Label();
            this.label1 = new System.Windows.Forms.Label();
            this.PropertyDefinition = new System.Windows.Forms.TextBox();
            this.SuspendLayout();
            // 
            // PropertyName
            // 
            resources.ApplyResources(this.PropertyName, "PropertyName");
            this.PropertyName.Name = "PropertyName";
            this.PropertyName.TextChanged += new System.EventHandler(this.PropertyName_TextChanged);
            // 
            // label2
            // 
            resources.ApplyResources(this.label2, "label2");
            this.label2.Name = "label2";
            // 
            // label1
            // 
            resources.ApplyResources(this.label1, "label1");
            this.label1.Name = "label1";
            // 
            // PropertyDefinition
            // 
            resources.ApplyResources(this.PropertyDefinition, "PropertyDefinition");
            this.PropertyDefinition.Name = "PropertyDefinition";
            this.PropertyDefinition.TextChanged += new System.EventHandler(this.PropertyDefinition_TextChanged);
            // 
            // Calculated
            // 
            this.Controls.Add(this.PropertyDefinition);
            this.Controls.Add(this.PropertyName);
            this.Controls.Add(this.label2);
            this.Controls.Add(this.label1);
            this.Name = "Calculated";
            resources.ApplyResources(this, "$this");
            this.ResumeLayout(false);
            this.PerformLayout();

		}
		#endregion

		private void PropertyDefinition_TextChanged(object sender, System.EventArgs e)
		{
			if (m_property == null || m_isUpdating)
				return;

			m_property.Expression = PropertyDefinition.Text;
			if (m_editor != null)
				m_editor.HasChanged();
		}

		private void PropertyName_TextChanged(object sender, System.EventArgs e)
		{
			if (m_property == null || m_isUpdating)
				return;

			m_property.Name = PropertyName.Text;
			if (NameChanged != null)
				NameChanged(m_property, m_property.Name);
			if (m_editor != null)
				m_editor.HasChanged();
		
		}
	}
}