mcs/class/System.Design/System.ComponentModel.Design/DateTimeEditor.cs

   1 //
   2 // System.ComponentModel.Design.DateTimeEditor
   3 //
   4 // Authors:
   5 //   Andreas Nahr (ClassDevelopment@A-SoftTech.com)
   6 //   Gert Driesen (drieseng@users.sourceforge.net)
   7 //
   8 // (C) 2004 Novell
   9 // (C) 2007 Andreas Nahr
  10 //
  11
  12 //
  13 // Permission is hereby granted, free of charge, to any person obtaining
  14 // a copy of this software and associated documentation files (the
  15 // "Software"), to deal in the Software without restriction, including
  16 // without limitation the rights to use, copy, modify, merge, publish,
  17 // distribute, sublicense, and/or sell copies of the Software, and to
  18 // permit persons to whom the Software is furnished to do so, subject to
  19 // the following conditions:
  20 //
  21 // The above copyright notice and this permission notice shall be
  22 // included in all copies or substantial portions of the Software.
  23 //
  24 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  25 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  26 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  27 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  28 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  29 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  30 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  31 //
  32
  33
  34 using System;
  35 using System.ComponentModel;
  36 using System.Drawing.Design;
  37 using System.Windows.Forms;
  38 using System.Windows.Forms.Design;
  39
  40 namespace System.ComponentModel.Design
  41 {
  42         public class DateTimeEditor : UITypeEditor
  43         {
  44                 private class EditorControl : MonthCalendar
  45                 {
  46                         public EditorControl ()
  47                         {
  48                                 MaxSelectionCount = 1;
  49                         }
  50                 }
  51
  52                 private IWindowsFormsEditorService editorService;
  53                 private EditorControl control = new EditorControl ();
  54                 private DateTime editContent;
  55
  56                 public DateTimeEditor ()
  57                 {
  58                         control.LostFocus += new EventHandler (changeHandler);
  59                         control.DateSelected += new DateRangeEventHandler (control_DateSelected);
  60                 }
  61
  62                 public override object EditValue (ITypeDescriptorContext context, IServiceProvider provider, object value)
  63                 {
  64                         if (context != null && provider != null)
  65                         {
  66                                 editorService = (IWindowsFormsEditorService)provider.GetService (typeof (IWindowsFormsEditorService));
  67                                 if (editorService != null)
  68                                 {
  69                                         if (!(value is DateTime))
  70                                                 return value;
  71
  72                                         editContent = (DateTime)value;
  73                                         if (editContent > control.MaxDate || editContent < control.MinDate)
  74                                                 editContent = DateTime.Today;
  75
  76                                         control.SelectionStart = editContent;
  77
  78                                         editorService.DropDownControl (control);
  79
  80                                         return editContent;
  81                                 }
  82                         }
  83                         return base.EditValue (context, provider, value);
  84                 }
  85
  86                 void changeHandler (object sender, EventArgs e)
  87                 {
  88                         editContent = control.SelectionStart;
  89                 }
  90
  91                 void control_DateSelected (object sender, DateRangeEventArgs e)
  92                 {
  93                         editContent = e.Start;
  94                         editorService.CloseDropDown ();
  95                 }
  96
  97                 public override UITypeEditorEditStyle GetEditStyle (ITypeDescriptorContext context)
  98                 {
  99                         return UITypeEditorEditStyle.DropDown;
 100                 }
 101         }
 102 }