OpenHardwareMonitor: External/Aga.Controls/Tree/NodeControls/BindableControl.cs@f84878f52cd9

     1 using System;

     2 using System.Collections.Generic;

     3 using System.Text;

     4 using System.Reflection;

     5 using System.ComponentModel;

     7 namespace Aga.Controls.Tree.NodeControls

8 {

     9 	public abstract class BindableControl : NodeControl

    10 	{

    11 		private struct MemberAdapter

    12 		{

    13 			private object _obj;

    14 			private PropertyInfo _pi;

    15 			private FieldInfo _fi;

    17 			public static readonly MemberAdapter Empty = new MemberAdapter();

    19 			public Type MemberType

    20 			{

    21 				get

    22 				{

    23 					if (_pi != null)

    24 						return _pi.PropertyType;

    25 					else if (_fi != null)

    26 						return _fi.FieldType;

    27 					else

    28 						return null;

    29 				}

    30 			}

    32 			public object Value

    33 			{

    34 				get

    35 				{

    36 					if (_pi != null && _pi.CanRead)

    37 						return _pi.GetValue(_obj, null);

    38 					else if (_fi != null)

    39 						return _fi.GetValue(_obj);

    40 					else

    41 						return null;

    42 				}

    43 				set

    44 				{

    45 					if (_pi != null && _pi.CanWrite)

    46 						_pi.SetValue(_obj, value, null);

    47 					else if (_fi != null)

    48 						_fi.SetValue(_obj, value);

    49 				}

    50 			}

    52 			public MemberAdapter(object obj, PropertyInfo pi)

    53 			{

    54 				_obj = obj;

    55 				_pi = pi;

    56 				_fi = null;

    57 			}

    59 			public MemberAdapter(object obj, FieldInfo fi)

    60 			{

    61 				_obj = obj;

    62 				_fi = fi;

    63 				_pi = null;

    64 			}

    65 		}

    67 		#region Properties

    69 		private bool _virtualMode = false;

    70 		[DefaultValue(false), Category("Data")]

    71 		public bool VirtualMode

    72 		{

    73 			get { return _virtualMode; }

    74 			set { _virtualMode = value; }

    75 		}

    77 		private string _propertyName = "";

    78 		[DefaultValue(""), Category("Data")]

    79 		public string DataPropertyName

    80 		{

    81 			get { return _propertyName; }

    82 			set

    83 			{

    84 				if (_propertyName == null)

    85 					_propertyName = string.Empty;

    86 				_propertyName = value;

    87 			}

    88 		}

    90 		private bool _incrementalSearchEnabled = false;

    91 		[DefaultValue(false)]

    92 		public bool IncrementalSearchEnabled

    93 		{

    94 			get { return _incrementalSearchEnabled; }

    95 			set { _incrementalSearchEnabled = value; }

    96 		}

    98 		#endregion

   100 		public virtual object GetValue(TreeNodeAdv node)

   101 		{

   102 			if (VirtualMode)

   103 			{

   104 				NodeControlValueEventArgs args = new NodeControlValueEventArgs(node);

   105 				OnValueNeeded(args);

   106 				return args.Value;

   107 			}

   108 			else

   109 			{

   110 				try

   111 				{

   112 					return GetMemberAdapter(node).Value;

   113 				}

   114 				catch (TargetInvocationException ex)

   115 				{

   116 					if (ex.InnerException != null)

   117 						throw new ArgumentException(ex.InnerException.Message, ex.InnerException);

   118 					else

   119 						throw new ArgumentException(ex.Message);

   120 				}

   121 			}

   122 		}

   124 		public virtual void SetValue(TreeNodeAdv node, object value)

   125 		{

   126 			if (VirtualMode)

   127 			{

   128 				NodeControlValueEventArgs args = new NodeControlValueEventArgs(node);

   129 				args.Value = value;

   130 				OnValuePushed(args);

   131 			}

   132 			else

   133 			{

   134 				try

   135 				{

   136 					MemberAdapter ma = GetMemberAdapter(node);

   137 					ma.Value = value;

   138 				}

   139 				catch (TargetInvocationException ex)

   140 				{

   141 					if (ex.InnerException != null)

   142 						throw new ArgumentException(ex.InnerException.Message, ex.InnerException);

   143 					else

   144 						throw new ArgumentException(ex.Message);

   145 				}

   146 			}

   147 		}

   149 		public Type GetPropertyType(TreeNodeAdv node)

   150 		{

   151 			return GetMemberAdapter(node).MemberType;

   152 		}

   154 		private MemberAdapter GetMemberAdapter(TreeNodeAdv node)

   155 		{

   156 			if (node.Tag != null && !string.IsNullOrEmpty(DataPropertyName))

   157 			{

   158 				Type type = node.Tag.GetType();

   159 				PropertyInfo pi = type.GetProperty(DataPropertyName);

   160 				if (pi != null)

   161 					return new MemberAdapter(node.Tag, pi);

   162 				else

   163 				{

   164 					FieldInfo fi = type.GetField(DataPropertyName, BindingFlags.Instance | BindingFlags.Public | BindingFlags.NonPublic);

   165 					if (fi != null)

   166 						return new MemberAdapter(node.Tag, fi);

   167 				}

   168 			}

   169 			return MemberAdapter.Empty;

   170 		}

   172 		public override string ToString()

   173 		{

   174 			if (string.IsNullOrEmpty(DataPropertyName))

   175 				return GetType().Name;

   176 			else

   177 				return string.Format("{0} ({1})", GetType().Name, DataPropertyName);

   178 		}

   180 		public event EventHandler<NodeControlValueEventArgs> ValueNeeded;

   181 		private void OnValueNeeded(NodeControlValueEventArgs args)

   182 		{

   183 			if (ValueNeeded != null)

   184 				ValueNeeded(this, args);

   185 		}

   187 		public event EventHandler<NodeControlValueEventArgs> ValuePushed;

   188 		private void OnValuePushed(NodeControlValueEventArgs args)

   189 		{

   190 			if (ValuePushed != null)

   191 				ValuePushed(this, args);

   192 		}

   193 	}

   194 }

author	Stephane Lenclud
	Sat, 30 Jan 2016 23:01:51 +0100
branch	MiniDisplay
changeset 454	f84878f52cd9
permissions	-rw-r--r--