class/System.Windows/System.Windows.Data/Binding.cs

   1 //
   2 // Binding.cs
   3 //
   4 // Contact:
   5 //   Moonlight List (moonlight-list@lists.ximian.com)
   6 //
   7 // Copyright 2008 Novell, Inc.
   8 //
   9 // Permission is hereby granted, free of charge, to any person obtaining
  10 // a copy of this software and associated documentation files (the
  11 // "Software"), to deal in the Software without restriction, including
  12 // without limitation the rights to use, copy, modify, merge, publish,
  13 // distribute, sublicense, and/or sell copies of the Software, and to
  14 // permit persons to whom the Software is furnished to do so, subject to
  15 // the following conditions:
  16 //
  17 // The above copyright notice and this permission notice shall be
  18 // included in all copies or substantial portions of the Software.
  19 //
  20 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  21 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  22 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  23 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  24 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  25 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  26 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  27 //
  28
  29 using System.ComponentModel;
  30 using System.Globalization;
  31 using System.Windows;
  32 using System.Collections.Generic;
  33
  34 using Mono;
  35
  36 namespace System.Windows.Data {
  37         public class Binding {
  38                 IValueConverter converter;
  39                 CultureInfo converterCulture;
  40                 object converterParameter;
  41                 PropertyPath path;
  42                 BindingMode mode;
  43                 bool notifyonerror;
  44                 bool validatesonex;
  45                 bool issealed;
  46                 object source;
  47
  48                 public IValueConverter Converter {
  49                         get { return converter; }
  50                         set {
  51                                 CheckSealed ();
  52                                 converter = value;
  53                         }
  54                 }
  55
  56                 public CultureInfo ConverterCulture {
  57                         get { return converterCulture; }
  58                         set {
  59                                 CheckSealed ();
  60                                 converterCulture = value;
  61                         }
  62                 }
  63
  64                 public object ConverterParameter {
  65                         get { return converterParameter; }
  66                         set {
  67                                 CheckSealed ();
  68                                 converterParameter = value;
  69                         }
  70                 }
  71
  72                 public BindingMode Mode {
  73                         get { return mode; }
  74                         set {
  75                                 CheckSealed ();
  76                                 mode = value;
  77                         }
  78                 }
  79
  80                 public bool NotifyOnValidationError {
  81                         get { return notifyonerror; }
  82                         set {
  83                                 CheckSealed ();
  84                                 notifyonerror = value;
  85                         }
  86                 }
  87
  88                 [TypeConverter (typeof (PropertyPathConverter))]
  89                 public PropertyPath Path {
  90                         get {
  91                                 return path;
  92                         }
  93                         set {
  94                                 if (value.NativeDP != IntPtr.Zero)
  95                                         throw new ArgumentException ("PropertyPaths which are instantiated with a DependencyProperty are not supported");
  96
  97                                 CheckSealed ();
  98                                 path = value;
  99                         }
 100                 }
 101
 102                 internal bool Sealed {
 103                         get {
 104                                 return issealed;
 105                         }
 106                         private set {
 107                                 issealed = value;
 108                         }
 109                 }
 110
 111                 public object Source {
 112                         get { return source; }
 113                         set {
 114                                 CheckSealed ();
 115                                 source = value;
 116                         }
 117                 }
 118
 119                 public bool ValidatesOnExceptions {
 120                         get { return validatesonex; }
 121                         set {
 122                                 CheckSealed ();
 123                                 validatesonex = value;
 124                         }
 125                 }
 126
 127                 public Binding ()
 128                         : this ("")
 129                 {
 130
 131                 }
 132
 133                 public Binding (string path)
 134                 {
 135                         if (path == null)
 136                                 throw new ArgumentNullException ("path");
 137
 138                         Mode = BindingMode.OneWay;
 139                         Path = new PropertyPath (path);
 140                 }
 141
 142                 void CheckSealed ()
 143                 {
 144                         if (Sealed)
 145                                 throw new InvalidOperationException ("The Binding cannot be changed after it has been used");
 146                 }
 147
 148                 internal void Seal ()
 149                 {
 150                         if (Sealed)
 151                                 return;
 152
 153                         Sealed = true;
 154                 }
 155         }
 156 }