Revit.Plugln/FWindSoft/FWindSoft.Wpf/MVVM/Dynamic/BaseViewModel.cs


using System;
using System.Collections.Generic;
using System.Linq;
using System.Reflection;
using System.Windows;
using FWindSoft.Data;

namespace FWindSoft.MVVM
{
    public class BaseViewModel : BasePropertyChanged
    {
      /*此所谓适配器，为了提供统一的访问接口
       * 其充当的角色不过是一个抽象引用。
       * 依托于wpf的反射机制，动态调用vm中方法的名称
       * 其本质无所谓适配器 
      */
       private CommandAdapter m_Commands;
       /// <summary>
       /// 返回所有的命令
       /// </summary>
        public CommandAdapter Commands
        {
            get
            {              
                if (m_Commands == null)
                {
                    Type t = typeof(CommandAdapterFactory<>).MakeGenericType(new Type[] { this.GetType() });
                    m_Commands = (CommandAdapter)(t.GetMember("Create").FirstOrDefault() as MethodInfo)
                        .Invoke(null, new object[] { this });
                }
                return m_Commands;
            }
        }

        #region 注册相关
        protected Dictionary<string, object> m_DicRef=new Dictionary<string, object>();
        /// <summary>
        /// 注册父窗体
        /// </summary>
        public void Register(string key, object refObject)
        {
            m_DicRef[key] = refObject;
        }
        /// <summary>
        /// 获取关联对象
        /// </summary>
        /// <typeparam name="T"></typeparam>
        /// <param name="key"></param>
        /// <returns></returns>
        public T GetRef<T>(string key)
        {
            if (!m_DicRef.ContainsKey(key))
                return default(T);
            return (T)m_DicRef[key];
        }

        private const string VIEWKEY = "{8526A703-2562-4613-896D-C97E362AA238}";
        /// <summary>
        /// 设置相关联view
        /// </summary>
        /// <param name="view"></param>
        public void SetRefView(UIElement view)
        {
            Register(VIEWKEY, view);
        }
        public UIElement GetRefView()
        {
            return GetRef<UIElement>(VIEWKEY);
        }
        #endregion

        #region 关联前台是否可用

        private Func<bool> m_WatchValidate;
        public void WatchValidateResult(Func<bool> action)
        {
            m_WatchValidate = action;
        }
        /// <summary>
        /// 界面验证是否通过
        /// </summary>
        public override bool IsValidated
        {
            get
            {
                if (!base.IsValidated)
                    return false;//验证通过可以走下面的逻辑
                var temp = m_WatchValidate;
                if (temp != null)
                {
                    return temp();
                }
                return true;
            }
        }



        #endregion

        #region 内部属性变更模块
        public bool IsInEditing { get;private set; }
        public void BeginInEdit()
        { IsInEditing = true; }
        public void EndInEdit()
        { IsInEditing = false; }
        #endregion
    }
}