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/source/library/Interlace/Binding/ViewConverters/MethodConverter.cs

https://bitbucket.org/VahidN/interlace
C# | 78 lines | 44 code | 9 blank | 25 comment | 4 complexity | 1eb90ad782259f5e71b1c619f9863b07 MD5 | raw file
  1. #region Using Directives and Copyright Notice
  2. // Copyright (c) 2007-2010, Computer Consultancy Pty Ltd
  3. // All rights reserved.
  4. //
  5. // Redistribution and use in source and binary forms, with or without
  6. // modification, are permitted provided that the following conditions are met:
  7. // * Redistributions of source code must retain the above copyright
  8. // notice, this list of conditions and the following disclaimer.
  9. // * Redistributions in binary form must reproduce the above copyright
  10. // notice, this list of conditions and the following disclaimer in the
  11. // documentation and/or other materials provided with the distribution.
  12. // * Neither the name of the Computer Consultancy Pty Ltd nor the
  13. // names of its contributors may be used to endorse or promote products
  14. // derived from this software without specific prior written permission.
  15. //
  16. // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
  17. // AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  18. // IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  19. // ARE DISCLAIMED. IN NO EVENT SHALL COMPUTER CONSULTANCY PTY LTD BE LIABLE
  20. // FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  21. // DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
  22. // SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
  23. // CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  24. // LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  25. // OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
  26. // DAMAGE.
  27. using System;
  28. using System.Collections.Generic;
  29. using System.Text;
  30. using Interlace.Binding.Views;
  31. #endregion
  32. namespace Interlace.Binding.ViewConverters
  33. {
  34. public delegate object MethodConvert(object originalValue);
  35. public class MethodConverter : ViewConverterBase
  36. {
  37. MethodConvert _modelToViewMethodOrNull;
  38. MethodConvert _viewToModelMethodOrNull;
  39. public MethodConverter(MethodConvert modelToViewMethodOrNull, MethodConvert viewToModelMethodOrNull)
  40. {
  41. _modelToViewMethodOrNull = modelToViewMethodOrNull;
  42. _viewToModelMethodOrNull = viewToModelMethodOrNull;
  43. }
  44. public override object ModelToView(object obj)
  45. {
  46. if (_modelToViewMethodOrNull != null)
  47. {
  48. return _modelToViewMethodOrNull(obj);
  49. }
  50. else
  51. {
  52. throw new InvalidOperationException("A change was made to the model that had an " +
  53. "attached MethodConverter and no matching delegate.");
  54. }
  55. }
  56. public override object ViewToModel(object obj)
  57. {
  58. if (_viewToModelMethodOrNull != null)
  59. {
  60. return _viewToModelMethodOrNull(obj);
  61. }
  62. else
  63. {
  64. throw new InvalidOperationException("A change was made to the view that had an " +
  65. "attached MethodConverter and no matching delegate.");
  66. }
  67. }
  68. }
  69. }