moel@345: using System;
moel@345: using System.Collections.Generic;
moel@345: using System.Text;
moel@345: using System.Reflection;
moel@345: using System.ComponentModel;
moel@345: 
moel@345: namespace Aga.Controls.Tree.NodeControls
moel@345: {
moel@345: 	public abstract class BindableControl : NodeControl
moel@345: 	{
moel@345: 		private struct MemberAdapter
moel@345: 		{
moel@345: 			private object _obj;
moel@345: 			private PropertyInfo _pi;
moel@345: 			private FieldInfo _fi;
moel@345: 
moel@345: 			public static readonly MemberAdapter Empty = new MemberAdapter();
moel@345: 
moel@345: 			public Type MemberType
moel@345: 			{
moel@345: 				get
moel@345: 				{
moel@345: 					if (_pi != null)
moel@345: 						return _pi.PropertyType;
moel@345: 					else if (_fi != null)
moel@345: 						return _fi.FieldType;
moel@345: 					else
moel@345: 						return null;
moel@345: 				}
moel@345: 			}
moel@345: 
moel@345: 			public object Value
moel@345: 			{
moel@345: 				get
moel@345: 				{
moel@345: 					if (_pi != null && _pi.CanRead)
moel@345: 						return _pi.GetValue(_obj, null);
moel@345: 					else if (_fi != null)
moel@345: 						return _fi.GetValue(_obj);
moel@345: 					else
moel@345: 						return null;
moel@345: 				}
moel@345: 				set
moel@345: 				{
moel@345: 					if (_pi != null && _pi.CanWrite)
moel@345: 						_pi.SetValue(_obj, value, null);
moel@345: 					else if (_fi != null)
moel@345: 						_fi.SetValue(_obj, value);
moel@345: 				}
moel@345: 			}
moel@345: 
moel@345: 			public MemberAdapter(object obj, PropertyInfo pi)
moel@345: 			{
moel@345: 				_obj = obj;
moel@345: 				_pi = pi;
moel@345: 				_fi = null;
moel@345: 			}
moel@345: 
moel@345: 			public MemberAdapter(object obj, FieldInfo fi)
moel@345: 			{
moel@345: 				_obj = obj;
moel@345: 				_fi = fi;
moel@345: 				_pi = null;
moel@345: 			}
moel@345: 		}
moel@345: 
moel@345: 		#region Properties
moel@345: 
moel@345: 		private bool _virtualMode = false;
moel@345: 		[DefaultValue(false), Category("Data")]
moel@345: 		public bool VirtualMode
moel@345: 		{
moel@345: 			get { return _virtualMode; }
moel@345: 			set { _virtualMode = value; }
moel@345: 		}
moel@345: 
moel@345: 		private string _propertyName = "";
moel@345: 		[DefaultValue(""), Category("Data")]
moel@345: 		public string DataPropertyName
moel@345: 		{
moel@345: 			get { return _propertyName; }
moel@345: 			set 
moel@345: 			{
moel@345: 				if (_propertyName == null)
moel@345: 					_propertyName = string.Empty;
moel@345: 				_propertyName = value; 
moel@345: 			}
moel@345: 		}
moel@345: 
moel@345: 		private bool _incrementalSearchEnabled = false;
moel@345: 		[DefaultValue(false)]
moel@345: 		public bool IncrementalSearchEnabled
moel@345: 		{
moel@345: 			get { return _incrementalSearchEnabled; }
moel@345: 			set { _incrementalSearchEnabled = value; }
moel@345: 		}
moel@345: 
moel@345: 		#endregion
moel@345: 
moel@345: 		public virtual object GetValue(TreeNodeAdv node)
moel@345: 		{
moel@345: 			if (VirtualMode)
moel@345: 			{
moel@345: 				NodeControlValueEventArgs args = new NodeControlValueEventArgs(node);
moel@345: 				OnValueNeeded(args);
moel@345: 				return args.Value;
moel@345: 			}
moel@345: 			else
moel@345: 			{
moel@345: 				try
moel@345: 				{
moel@345: 					return GetMemberAdapter(node).Value;
moel@345: 				}
moel@345: 				catch (TargetInvocationException ex)
moel@345: 				{
moel@345: 					if (ex.InnerException != null)
moel@345: 						throw new ArgumentException(ex.InnerException.Message, ex.InnerException);
moel@345: 					else
moel@345: 						throw new ArgumentException(ex.Message);
moel@345: 				}
moel@345: 			}
moel@345: 		}
moel@345: 
moel@345: 		public virtual void SetValue(TreeNodeAdv node, object value)
moel@345: 		{
moel@345: 			if (VirtualMode)
moel@345: 			{
moel@345: 				NodeControlValueEventArgs args = new NodeControlValueEventArgs(node);
moel@345: 				args.Value = value;
moel@345: 				OnValuePushed(args);
moel@345: 			}
moel@345: 			else
moel@345: 			{
moel@345: 				try
moel@345: 				{
moel@345: 					MemberAdapter ma = GetMemberAdapter(node);
moel@345: 					ma.Value = value;
moel@345: 				}
moel@345: 				catch (TargetInvocationException ex)
moel@345: 				{
moel@345: 					if (ex.InnerException != null)
moel@345: 						throw new ArgumentException(ex.InnerException.Message, ex.InnerException);
moel@345: 					else
moel@345: 						throw new ArgumentException(ex.Message);
moel@345: 				}
moel@345: 			}
moel@345: 		}
moel@345: 
moel@345: 		public Type GetPropertyType(TreeNodeAdv node)
moel@345: 		{
moel@345: 			return GetMemberAdapter(node).MemberType;
moel@345: 		}
moel@345: 
moel@345: 		private MemberAdapter GetMemberAdapter(TreeNodeAdv node)
moel@345: 		{
moel@345: 			if (node.Tag != null && !string.IsNullOrEmpty(DataPropertyName))
moel@345: 			{
moel@345: 				Type type = node.Tag.GetType();
moel@345: 				PropertyInfo pi = type.GetProperty(DataPropertyName);
moel@345: 				if (pi != null)
moel@345: 					return new MemberAdapter(node.Tag, pi);
moel@345: 				else
moel@345: 				{
moel@345: 					FieldInfo fi = type.GetField(DataPropertyName, BindingFlags.Instance | BindingFlags.Public | BindingFlags.NonPublic);
moel@345: 					if (fi != null)
moel@345: 						return new MemberAdapter(node.Tag, fi);
moel@345: 				}
moel@345: 			}
moel@345: 			return MemberAdapter.Empty;
moel@345: 		}
moel@345: 
moel@345: 		public override string ToString()
moel@345: 		{
moel@345: 			if (string.IsNullOrEmpty(DataPropertyName))
moel@345: 				return GetType().Name;
moel@345: 			else
moel@345: 				return string.Format("{0} ({1})", GetType().Name, DataPropertyName);
moel@345: 		}
moel@345: 
moel@345: 		public event EventHandler<NodeControlValueEventArgs> ValueNeeded;
moel@345: 		private void OnValueNeeded(NodeControlValueEventArgs args)
moel@345: 		{
moel@345: 			if (ValueNeeded != null)
moel@345: 				ValueNeeded(this, args);
moel@345: 		}
moel@345: 
moel@345: 		public event EventHandler<NodeControlValueEventArgs> ValuePushed;
moel@345: 		private void OnValuePushed(NodeControlValueEventArgs args)
moel@345: 		{
moel@345: 			if (ValuePushed != null)
moel@345: 				ValuePushed(this, args);
moel@345: 		}
moel@345: 	}
moel@345: }