using System;
using ESRI.ArcGIS.Controls;
using ESRI.ArcGIS.esriSystem;
using KGIS.Framework.Maps;
using KGIS.Framework.Utils;

namespace Kingo.Plugin.EngineEditor.Commands
{
    /// <summary>
    /// 工具条 捕捉
    /// </summary>
    public class BaseSnapCmd : ESRI.ArcGIS.SystemUI.ICommand
    {
        private IHookHelper m_hookHelper;
        private EngineEditorClass m_editor = new EngineEditorClass();
        private ISnappingEnvironment snapEnv = null;
        private bool IsChecked = false;
        public virtual esriSnappingType SnappingType { get { return esriSnappingType.esriSnappingTypeNone; } }

        public bool Checked
        {
            get
            {
                IsChecked = (snapEnv.SnappingType & SnappingType) == SnappingType;
                return IsChecked;
            }
        }

        public virtual void OnCreate(object hook)
        {
            try
            {
                if (hook == null) return;
                if (m_hookHelper == null)
                    m_hookHelper = new HookHelper
                    {
                        Hook = hook
                    };

                if (m_hookHelper.ActiveView == null)
                {
                    m_hookHelper = null;
                    return;
                }
                if (m_hookHelper is IHookHelper2 hookHelper2)
                {
                    IExtensionManager extensionManager = hookHelper2.ExtensionManager;
                    if (extensionManager != null)
                    {
                        IExtension extension = extensionManager.FindExtension(new UIDClass
                        {
                            Value = "{E07B4C52-C894-4558-B8D4-D4050018D1DA}"//捕捉
                        });
                        if (extension != null)
                        {
                            this.snapEnv = extension as ISnappingEnvironment;
                            this.snapEnv.SnappingType = esriSnappingType.esriSnappingTypeIntersection | esriSnappingType.esriSnappingTypeEdge | esriSnappingType.esriSnappingTypeVertex;
                        }
                    }
                }
            }
            catch (Exception ex)
            {
                LogAPI.Debug("加载 BaseSnap 类时失败，异常原因: " + ex + " ; ");
                m_hookHelper = null;
            }
        }

        private IMapService _MapService;

        public virtual void OnClick()
        {
            try
            {
                this.IsChecked = !this.IsChecked;
                if (this.IsChecked)
                {
                    if (snapEnv != null)
                    {
                        if ((snapEnv.SnappingType & SnappingType) != SnappingType)
                        {
                            snapEnv.SnappingType = snapEnv.SnappingType | SnappingType;
                        }
                    }
                }
                else
                {
                    if (snapEnv != null && (snapEnv.SnappingType & SnappingType) == SnappingType)
                    {
                        if ((snapEnv.SnappingType ^ SnappingType) == esriSnappingType.esriSnappingTypeNone)
                        {
                            snapEnv.SnappingType = esriSnappingType.esriSnappingTypeNone;
                        }
                        else
                        {
                            if (snapEnv != null && (snapEnv.SnappingType & SnappingType) == SnappingType)
                            {
                                snapEnv.SnappingType = snapEnv.SnappingType ^ SnappingType;
                            }
                        }
                    }
                }
            }
            catch (Exception ex)
            {
                LogAPI.Debug(ex);
            }
        }

        public int Bitmap
        {
            get { return 0; }
        }

        public string Caption
        {
            get { return ""; }
        }

        public string Category
        {
            get { return ""; }
        }

        public bool Enabled
        {
            get { return m_editor.EditState == esriEngineEditState.esriEngineStateEditing; }
        }

        public int HelpContextID
        {
            get { return 0; }
        }

        public string HelpFile
        {
            get { return ""; }
        }

        public string Message
        {
            get { return ""; }
        }

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

        public virtual string Tooltip
        {
            get { return ""; }
        }
    }
}