// Copyright 2010 ESRI
// 
// All rights reserved under the copyright laws of the United States
// and applicable international laws, treaties, and conventions.
// 
// You may freely redistribute and use this sample code, with or
// without modification, provided you include the original copyright
// notice and use restrictions.
// 
// See the use restrictions.
// 

using ESRI.ArcGIS.Editor;
using ESRI.ArcGIS.esriSystem;
using ESRI.ArcGIS.Geodatabase;
using ESRI.ArcGIS.Framework;

namespace CurveConversion
{
    public class CurveConversionCmd : ESRI.ArcGIS.Desktop.AddIns.Button
    {
        public IEditor _Editor;
        public static IFeature _Feature;
        private static IDockableWindow _DockWindow;

        public CurveConversionCmd()
        {
            UID eUID = new UIDClass();
            eUID.Value = "esriEditor.Editor";
            _Editor  = ArcMap.Application.FindExtensionByCLSID(eUID) as IEditor;

           // Get dockable window.
            UID dockWinID = new UIDClass();
            dockWinID.Value = @"ESRI_Employee_CurveConversion_CurveConversionDockWin";
            _DockWindow = ArcMap.DockableWindowManager.GetDockableWindow(dockWinID);
        }

        public static IDockableWindow GetCurveConversionWindow
        {
            get
            {
                return _DockWindow;
            }
        }

        protected override void OnClick()
        {
            if (_DockWindow == null)
                return;
            CurveConversionDockWin._MFields = _Feature.Fields;
            CurveConversionDockWin.UpdateFieldList();
            
            _DockWindow.Show(!_DockWindow.IsVisible());
        }

        /// <summary>
        /// The command enabled is true if the edit state is editing and a feature is selected.
        /// </summary>
        protected override void OnUpdate()
        {
            if (ArcMap.Application != null)
            {
                if (_Editor.EditState != esriEditState.esriStateEditing || _Editor.SelectionCount == 0)
                {
                    Enabled = false;
                    return;
                }
                
                IEnumFeature enumFeat = _Editor.EditSelection;
                _Feature = enumFeat.Next();
                //Check the first selected feature and make sure it is a polyline.
                bool CorrectShape = _Feature.Shape.GeometryType == ESRI.ArcGIS.Geometry.esriGeometryType.esriGeometryPolyline;
                Enabled = CorrectShape & _DockWindow != null;

            }
        }
    }
}