// Copyright 2012 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 System.Collections.Generic;
using System.Text;
using System.Runtime.InteropServices;
using ESRI.ArcGIS.Catalog;
using ESRI.ArcGIS.esriSystem;
using ESRI.ArcGIS.ADF.CATIDs;
using ESRI.ArcGIS.CatalogUI;

namespace CustomRootObject_CS
{
    [Guid("0ea89e53-2d0c-4b62-9de7-50a43414a92e")]
    [ClassInterface(ClassInterfaceType.None)]
    [ProgId("CustomRootObject_CS.clsGxStyleView")]
    public class clsGxStyleView : ESRI.ArcGIS.CatalogUI.IGxView
    {
        #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);
            GxPreviews.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);
            GxPreviews.Unregister(regKey);

        }

        #endregion
        #endregion

        #region Member Variables
        private IGxApplication m_pApp;
        private IGxCatalog m_pCatalog;
        private clsGxStyleGalleryItem m_pItem;
        private FrmGxStyleView frmGxStyleView = new FrmGxStyleView();
        //Subscribe to the events coming from the GxSelection.
        private GxSelection m_pSelection;
        #endregion

        public clsGxStyleView()
            : base()
        {
        }
        public void PreviewItem(long hDC, tagRECT r)
        {
            if (m_pItem == null)
                return;
            m_pItem.PreviewItem((Int32)hDC, r);
        }

        private void m_pSelection_OnSelectionChanged(IGxSelection Selection, ref object initiator)
        {
            Refresh();
            frmGxStyleView.RefreshView();
        }

        #region IGxView Implementations
        public void Activate(ESRI.ArcGIS.CatalogUI.IGxApplication Application, ESRI.ArcGIS.Catalog.IGxCatalog Catalog)
        {
            m_pApp = Application;
            m_pCatalog = Catalog;
            m_pSelection = (GxSelection)Catalog.Selection;
            m_pSelection.OnSelectionChanged += new IGxSelectionEvents_OnSelectionChangedEventHandler(m_pSelection_OnSelectionChanged);
            frmGxStyleView.GxStyleView = this;
            Refresh();
        }

        public bool Applies(ESRI.ArcGIS.Catalog.IGxObject Selection)
        {
            return Selection is clsGxStyleGalleryItem;
        }

        public ESRI.ArcGIS.esriSystem.UID ClassID
        {
            get
            {
                ESRI.ArcGIS.esriSystem.UID pUID = null;
                pUID = new UID();
                pUID.Value = "CustomRootObject_CS.clsGxStyleView";
                return pUID;
            }
        }

        public void Deactivate()
        {
            frmGxStyleView.GxStyleView = null;
            m_pApp = null;
            m_pCatalog = null;
        }

        public ESRI.ArcGIS.esriSystem.UID DefaultToolbarCLSID
        {
            get
            {
                return null;
            }
        }

        public string Name
        {
            get
            {
                return "Style";
            }
        }

        public void Refresh()
        {
            IGxObject pSelection = null;
            pSelection = m_pCatalog.SelectedObject;
            if (pSelection is clsGxStyleGalleryItem)
                m_pItem = (clsGxStyleGalleryItem) pSelection;
            else
                m_pItem = null;
        }

        public bool SupportsTools
        {
            get
            {
                return false; 
            }
        }

        public void SystemSettingChanged(int flag, string section)
        {
            // TODO: Add clsGxStyleView.SystemSettingChanged implementation
        }

        public int hWnd
        {
            get
            {
                return (Int32) frmGxStyleView.picStylePreview.Handle;
            }
        }
        #endregion

    }
}