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                 UpdateSourceTrigger trigger;
  48
  49                 public IValueConverter Converter {
  50                         get { return converter; }
  51                         set {
  52                                 CheckSealed ();
  53                                 converter = value;
  54                         }
  55                 }
  56
  57                 public CultureInfo ConverterCulture {
  58                         get { return converterCulture; }
  59                         set {
  60                                 CheckSealed ();
  61                                 converterCulture = value;
  62                         }
  63                 }
  64
  65                 public object ConverterParameter {
  66                         get { return converterParameter; }
  67                         set {
  68                                 CheckSealed ();
  69                                 converterParameter = value;
  70                         }
  71                 }
  72
  73                 public BindingMode Mode {
  74                         get { return mode; }
  75                         set {
  76                                 CheckSealed ();
  77                                 mode = value;
  78                         }
  79                 }
  80
  81                 public bool NotifyOnValidationError {
  82                         get { return notifyonerror; }
  83                         set {
  84                                 CheckSealed ();
  85                                 notifyonerror = value;
  86                         }
  87                 }
  88
  89                 [TypeConverter (typeof (PropertyPathConverter))]
  90                 public PropertyPath Path {
  91                         get {
  92                                 return path;
  93                         }
  94                         set {
  95                                 if (value.NativeDP != IntPtr.Zero)
  96                                         throw new ArgumentException ("PropertyPaths which are instantiated with a DependencyProperty are not supported");
  97
  98                                 CheckSealed ();
  99                                 path = value;
 100                         }
 101                 }
 102
 103                 internal bool Sealed {
 104                         get {
 105                                 return issealed;
 106                         }
 107                         private set {
 108                                 issealed = value;
 109                         }
 110                 }
 111
 112                 public object Source {
 113                         get { return source; }
 114                         set {
 115                                 CheckSealed ();
 116                                 source = value;
 117                         }
 118                 }
 119
 120                 public UpdateSourceTrigger UpdateSourceTrigger {
 121                         get { return trigger; }
 122                         set { trigger = value; }
 123                 }
 124
 125                 public bool ValidatesOnExceptions {
 126                         get { return validatesonex; }
 127                         set {
 128                                 CheckSealed ();
 129                                 validatesonex = value;
 130                         }
 131                 }
 132
 133                 public Binding ()
 134                         : this ("")
 135                 {
 136
 137                 }
 138
 139                 public Binding (string path)
 140                 {
 141                         if (path == null)
 142                                 throw new ArgumentNullException ("path");
 143
 144                         Mode = BindingMode.OneWay;
 145                         Path = new PropertyPath (path);
 146                         trigger = UpdateSourceTrigger.Default;
 147                 }
 148
 149                 void CheckSealed ()
 150                 {
 151                         if (Sealed)
 152                                 throw new InvalidOperationException ("The Binding cannot be changed after it has been used");
 153                 }
 154
 155                 internal void Seal ()
 156                 {
 157                         if (Sealed)
 158                                 return;
 159
 160                         Sealed = true;
 161                 }
 162         }
 163 }