// 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 System;
using ESRI.ArcGIS.Carto;
using ESRI.ArcGIS.Geometry;
using ESRI.ArcGIS.Controls;
using ESRI.ArcGIS.ADF.BaseClasses;
using ESRI.ArcGIS.ADF.CATIDs;
using System.Runtime.InteropServices;

namespace SelectCommands
{
    [ClassInterface(ClassInterfaceType.None)]
    [Guid("b737395c-7d7f-4cef-b38e-63b13498b079")]
    public sealed class ClearFeatureSelection : BaseCommand
    {
        #region COM Registration Function(s)
        [ComRegisterFunction()]
        [ComVisible(false)]
        static void RegisterFunction(Type registerType)
        {
            // Required for ArcGIS Component Category Registrar support
            ArcGISCategoryRegistration(registerType);

            //
            // TODO: Add any COM registration code here
            //
        }

        [ComUnregisterFunction()]
        [ComVisible(false)]
        static void UnregisterFunction(Type registerType)
        {
            // Required for ArcGIS Component Category Registrar support
            ArcGISCategoryUnregistration(registerType);

            //
            // TODO: Add any COM unregistration code here
            //
        }

        #region ArcGIS Component Category Registrar generated code
        /// <summary>
        /// Required method for ArcGIS Component Category registration -
        /// Do not modify the contents of this method with the code editor.
        /// </summary>
        private static void ArcGISCategoryRegistration(Type registerType)
        {
            string regKey = string.Format("HKEY_CLASSES_ROOT\\CLSID\\{{{0}}}", registerType.GUID);
            ControlsCommands.Register(regKey);

        }
        /// <summary>
        /// Required method for ArcGIS Component Category unregistration -
        /// Do not modify the contents of this method with the code editor.
        /// </summary>
        private static void ArcGISCategoryUnregistration(Type registerType)
        {
            string regKey = string.Format("HKEY_CLASSES_ROOT\\CLSID\\{{{0}}}", registerType.GUID);
            ControlsCommands.Unregister(regKey);

        }

        #endregion
        #endregion
        private IHookHelper m_HookHelper = new HookHelperClass();

        public ClearFeatureSelection()
        {
            //Create an IHookHelper object
            m_HookHelper = new HookHelperClass();

            //Set the tool properties
            base.m_caption = "Clear Feature Selection";
            base.m_category = "Sample_Select(C#)";
            base.m_name = "Sample_Select(C#)_Clear Feature Selection";
            base.m_message = "Clear Current Feature Selection";
            base.m_toolTip = "Clear Feature Selection";
            base.m_bitmap = new System.Drawing.Bitmap(GetType().Assembly.GetManifestResourceStream(GetType(), "ClearSelection.bmp"));
        }

        public override void OnCreate(object hook)
        {
            m_HookHelper.Hook = hook;
        }

        public override bool Enabled
        {
            get
            {
                if (m_HookHelper.FocusMap == null) return false;
                return (m_HookHelper.FocusMap.SelectionCount > 0);
            }
        }

        public override void OnClick()
        {
            //Clear selection
            m_HookHelper.FocusMap.ClearSelection();

            //Get the IActiveView of the FocusMap
            IActiveView activeView = (IActiveView)m_HookHelper.FocusMap;

            //Get the visible extent of the display
            IEnvelope bounds = activeView.ScreenDisplay.DisplayTransformation.FittedBounds;

            //Refresh the visible extent of the display
            activeView.PartialRefresh(esriViewDrawPhase.esriViewGeoSelection, null, bounds);
        }

    }
}