class/System.Design/System.Windows.Forms.Design/ControlBindingsConverter.cs

   1 // Permission is hereby granted, free of charge, to any person obtaining
   2 // a copy of this software and associated documentation files (the
   3 // "Software"), to deal in the Software without restriction, including
   4 // without limitation the rights to use, copy, modify, merge, publish,
   5 // distribute, sublicense, and/or sell copies of the Software, and to
   6 // permit persons to whom the Software is furnished to do so, subject to
   7 // the following conditions:
   8 //
   9 // The above copyright notice and this permission notice shall be
  10 // included in all copies or substantial portions of the Software.
  11 //
  12 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  13 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  14 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  15 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  16 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  17 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  18 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  19 //
  20 // Copyright (c) 2006 Novell, Inc. (http://www.novell.com)
  21 //
  22 // Authors:
  23 //      Peter Dennis Bartok (pbartok@novell.com)
  24 //      Ivan N. Zlatev (contact i-nz.net)
  25 //
  26 //
  27
  28 // NOT COMPLETE
  29 using System.ComponentModel;
  30 using System.Windows.Forms;
  31
  32 namespace System.Windows.Forms.Design
  33 {
  34         internal class ControlBindingsConverter : TypeConverter
  35         {
  36                 public ControlBindingsConverter()
  37                 {
  38                 }
  39
  40                 // TODO: Should create some sort of a special PropertyDescriptor and handle the data binding
  41                 //
  42                 [MonoTODO]
  43                 public override PropertyDescriptorCollection GetProperties (ITypeDescriptorContext context,
  44                                                                             object value, Attribute[] attributes)
  45                 {
  46                         PropertyDescriptorCollection properties = new PropertyDescriptorCollection (new PropertyDescriptor[0]);
  47                         ControlBindingsCollection collection = value as ControlBindingsCollection;
  48 #if NET_2_0
  49                         object bindableComponent = collection.BindableComponent;
  50 #else
  51                         object bindableComponent = collection.Control;
  52 #endif
  53                         if (collection != null && bindableComponent != null) {
  54                                 foreach (PropertyDescriptor property in
  55                                          TypeDescriptor.GetProperties (bindableComponent, attributes)) {
  56                                         if (((BindableAttribute) property.Attributes[typeof (BindableAttribute)]).Bindable)
  57                                                 properties.Add (new DataBindingPropertyDescriptor (property, attributes, true));
  58                                 }
  59                         }
  60                         return properties;
  61                 }
  62
  63                 public override bool GetPropertiesSupported (ITypeDescriptorContext context)
  64                 {
  65                         return true;
  66                 }
  67
  68                 public override bool CanConvertTo (ITypeDescriptorContext context, Type destinationType)
  69                 {
  70                         if (destinationType == typeof (string))
  71                                 return true;
  72                         return base.CanConvertTo (context, destinationType);
  73                 }
  74
  75                 public override object ConvertTo (ITypeDescriptorContext context, System.Globalization.CultureInfo culture,
  76                                                   object value, Type destinationType)
  77                 {
  78                         if (destinationType == typeof (string))
  79                             return String.Empty;
  80                         return base.ConvertTo (context, culture, value, destinationType);
  81                 }
  82
  83
  84                 [MonoTODO]
  85                 private class DataBindingPropertyDescriptor : PropertyDescriptor
  86                 {
  87                         bool _readOnly;
  88
  89                         [MonoTODO]
  90                         public DataBindingPropertyDescriptor (PropertyDescriptor property, Attribute [] attrs, bool readOnly)
  91                                 : base (property.Name, attrs)
  92                         {
  93                                 _readOnly = readOnly;
  94                         }
  95
  96                         [MonoTODO]
  97                         public override object GetValue (object component)
  98                         {
  99                                 // throw new NotImplementedException ();
 100                                 return null;
 101                         }
 102
 103                         [MonoTODO]
 104                         public override void SetValue (object component, object value)
 105                         {
 106                                 // throw new NotImplementedException ();
 107                         }
 108
 109                         [MonoTODO]
 110                         public override void ResetValue (object component)
 111                         {
 112                                 throw new NotImplementedException ();
 113                         }
 114
 115                         [MonoTODO]
 116                         public override bool CanResetValue (object component)
 117                         {
 118                                 // throw new NotImplementedException ();
 119                                 return false;
 120                         }
 121
 122                         public override bool ShouldSerializeValue (object component)
 123                         {
 124                                 return false;
 125                         }
 126
 127                         [MonoTODO]
 128                         public override Type PropertyType {
 129                                 get {
 130                                         // throw new NotImplementedException ();
 131                                         return typeof (DataBindingPropertyDescriptor);
 132                                 }
 133                         }
 134
 135                         [MonoTODO]
 136                         public override TypeConverter Converter {
 137                                 get {
 138                                         // throw new NotImplementedException ();
 139                                         return null;
 140                                 }
 141                         }
 142
 143                         public override Type ComponentType {
 144                                 get { return typeof (ControlBindingsCollection); }
 145                         }
 146
 147                         public override bool IsReadOnly {
 148                                 get { return _readOnly; }
 149                         }
 150                 }
 151         }
 152 }