mcs/class/System.Data/System.Data/DataRowView.cs

   1 //
   2 // System.Data.DataRowView.cs
   3 //
   4 // Author:
   5 //    Rodrigo Moya <rodrigo@ximian.com>
   6 //    Miguel de Icaza <miguel@ximian.com>
   7 //    Daniel Morgan <danmorg@sc.rr.com>
   8 //
   9 // (C) Ximian, Inc 2002
  10 // (C) Daniel Morgan 2002
  11 //
  12
  13 //
  14 // Copyright (C) 2004 Novell, Inc (http://www.novell.com)
  15 //
  16 // Permission is hereby granted, free of charge, to any person obtaining
  17 // a copy of this software and associated documentation files (the
  18 // "Software"), to deal in the Software without restriction, including
  19 // without limitation the rights to use, copy, modify, merge, publish,
  20 // distribute, sublicense, and/or sell copies of the Software, and to
  21 // permit persons to whom the Software is furnished to do so, subject to
  22 // the following conditions:
  23 //
  24 // The above copyright notice and this permission notice shall be
  25 // included in all copies or substantial portions of the Software.
  26 //
  27 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  28 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  29 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  30 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  31 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  32 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  33 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  34 //
  35
  36 using System;
  37 using System.Collections;
  38 using System.ComponentModel;
  39 using System.Reflection;
  40
  41 namespace System.Data
  42 {
  43         /// <summary>
  44         /// Represents a customized view of a DataRow exposed as a fully featured Windows Forms control.
  45         /// </summary>
  46         public class DataRowView : ICustomTypeDescriptor, IEditableObject, IDataErrorInfo
  47         {
  48                 #region Fields
  49
  50                 DataView dataView;
  51                 DataRow dataRow;
  52                 DataRowVersion rowVersion = DataRowVersion.Default;
  53
  54                 // FIXME: what are the defaults?
  55                 bool isEdit = false;
  56                 bool isNew = false;
  57
  58                 #endregion // Fields
  59
  60                 #region Constructors
  61
  62                 internal DataRowView (DataView dataView, DataRow row) : this(dataView, row, false){
  63                 }
  64
  65                 internal DataRowView (DataView dataView, DataRow row, bool isNew) {
  66                         this.dataView = dataView;
  67                         this.dataRow = row;
  68                         this.isNew = isNew;
  69                 }
  70
  71                 #endregion // Constructors
  72
  73                 #region Methods
  74
  75                 public override bool Equals(object other)
  76                 {
  77                         return (other != null &&
  78                                         other is DataRowView &&
  79                                         ((DataRowView)other).dataRow != null &&
  80                                         ((DataRowView)other).dataRow.Equals(this.dataRow));
  81                 }
  82
  83                 [MonoTODO]
  84                 public void BeginEdit ()
  85                 {
  86                         // FIXME:
  87                         dataRow.BeginEdit();
  88                         isEdit = true;
  89                 }
  90
  91                 [MonoTODO]
  92                 public void CancelEdit ()
  93                 {
  94                         // FIXME:
  95                         dataRow.CancelEdit();
  96                         isEdit = false;
  97                 }
  98
  99                 public DataView CreateChildView (DataRelation relation)
 100                 {
 101                         if (relation == null)
 102                                 throw new ArgumentException ("The relation is not parented to the table.");
 103                         return new DataView (relation.ChildTable);
 104                 }
 105
 106                 public DataView CreateChildView (string name)
 107                 {
 108                         return CreateChildView (
 109                                 dataRow.Table.ChildRelations [name]);
 110                 }
 111
 112                 [MonoTODO]
 113                 public void Delete ()
 114                 {
 115                         throw new NotImplementedException ();
 116                 }
 117
 118                 [MonoTODO]
 119                 public void EndEdit ()
 120                 {
 121                         // FIXME:
 122                         dataRow.EndEdit();
 123                         isEdit = false;
 124                 }
 125
 126                 #endregion // Methods
 127
 128                 #region Properties
 129
 130                 public DataView DataView
 131                 {
 132                         [MonoTODO]
 133                         get {
 134                                 return dataView;
 135                         }
 136                 }
 137
 138                 public bool IsEdit {
 139                         [MonoTODO]
 140                         get {
 141                                 return isEdit;
 142                         }
 143                 }
 144
 145                 public bool IsNew {
 146                         [MonoTODO]
 147                         get {
 148                                 return isNew;
 149                         }
 150                 }
 151
 152                 [System.Runtime.CompilerServices.IndexerName("Item")]
 153                 public object this[string column] {
 154                         [MonoTODO]
 155                         get {
 156                                 DataColumn dc = dataView.Table.Columns[column];
 157                                 return dataRow[dc];
 158                         }
 159                         [MonoTODO]
 160                         set {
 161                                 DataColumn dc = dataView.Table.Columns[column];
 162                                 dataRow[dc] = value;
 163                                 dataView.ChangedList(ListChangedType.ItemChanged,dc.Ordinal,-1);
 164                         }
 165                 }
 166
 167                 // the compiler creates a DefaultMemeberAttribute from
 168                 // this IndexerNameAttribute
 169                 public object this[int column] {
 170                         [MonoTODO]
 171                         get {
 172                                 DataColumn dc = dataView.Table.Columns[column];
 173                                 return dataRow[dc];
 174                         }
 175                         [MonoTODO]
 176                         set {
 177                                 DataColumn dc = dataView.Table.Columns[column];
 178                                 dataRow[dc] = value;
 179
 180                         }
 181                 }
 182
 183                 public DataRow Row {
 184                         [MonoTODO]
 185                         get {
 186                                 return dataRow;
 187                         }
 188                 }
 189
 190                 public DataRowVersion RowVersion {
 191                         [MonoTODO]
 192                         get {
 193                                 return rowVersion;
 194                         }
 195                 }
 196
 197                 [MonoTODO]
 198                 public override int GetHashCode() {
 199                         throw new NotImplementedException ();
 200                 }
 201
 202                 #endregion // Properties
 203
 204                 #region ICustomTypeDescriptor implementations
 205
 206                 [MonoTODO]
 207                 AttributeCollection ICustomTypeDescriptor.GetAttributes  ()
 208                 {
 209                         System.ComponentModel.AttributeCollection attributes;
 210                         attributes = AttributeCollection.Empty;
 211                         return attributes;
 212                 }
 213
 214                 [MonoTODO]
 215                 string ICustomTypeDescriptor.GetClassName ()
 216                 {
 217                         return "";
 218                 }
 219
 220                 [MonoTODO]
 221                 string ICustomTypeDescriptor.GetComponentName ()
 222                 {
 223                         return null;
 224                 }
 225
 226                 [MonoTODO]
 227                 TypeConverter ICustomTypeDescriptor.GetConverter ()
 228                 {
 229                         return null;
 230                 }
 231
 232                 [MonoTODO]
 233                 EventDescriptor ICustomTypeDescriptor.GetDefaultEvent ()
 234                 {
 235                         return null;
 236                 }
 237
 238                 [MonoTODO]
 239                 PropertyDescriptor ICustomTypeDescriptor.GetDefaultProperty ()
 240                 {
 241                         return null;
 242                 }
 243
 244                 [MonoTODO]
 245                 object ICustomTypeDescriptor.GetEditor (Type editorBaseType)
 246                 {
 247                         return null;
 248                 }
 249
 250                 [MonoTODO]
 251                 EventDescriptorCollection ICustomTypeDescriptor.GetEvents ()
 252                 {
 253                         return new EventDescriptorCollection(null);
 254                 }
 255
 256                 [MonoTODO]
 257                 EventDescriptorCollection ICustomTypeDescriptor.GetEvents (Attribute [] attributes)
 258                 {
 259                         return new EventDescriptorCollection(null);
 260                 }
 261
 262                 [MonoTODO]
 263                 PropertyDescriptorCollection ICustomTypeDescriptor.GetProperties ()
 264                 {
 265                         ITypedList typedList = (ITypedList) dataView;
 266                         return typedList.GetItemProperties(new PropertyDescriptor[0]);
 267                 }
 268
 269                 [MonoTODO]
 270                 PropertyDescriptorCollection ICustomTypeDescriptor.GetProperties (Attribute [] attributes)
 271                 {
 272                         PropertyDescriptorCollection descriptors;
 273                         descriptors = ((ICustomTypeDescriptor) this).GetProperties ();
 274                         // TODO: filter out descriptors which do not contain
 275                         //       any of those attributes
 276                         //       except, those descriptors
 277                         //       that contain DefaultMemeberAttribute
 278                         return descriptors;
 279                 }
 280
 281                 [MonoTODO]
 282                 object ICustomTypeDescriptor.GetPropertyOwner (PropertyDescriptor pd)
 283                 {
 284                         return this;
 285                 }
 286
 287                 #endregion // ICustomTypeDescriptor implementations
 288
 289                 #region IDataErrorInfo implementation
 290
 291                 string IDataErrorInfo.Error {
 292                         [MonoTODO]
 293                         get {
 294                                 return ""; // FIXME
 295                         }
 296                 }
 297
 298                 string IDataErrorInfo.this[string columnName] {
 299                         [MonoTODO]
 300                         get {
 301                                 return ""; // FIXME
 302                         }
 303                 }
 304
 305                 #endregion // IDataErrorInfo implementation
 306         }
 307 }